diff options
Diffstat (limited to 'wearable/gst/avi/gstavidemux.c')
| -rwxr-xr-x | wearable/gst/avi/gstavidemux.c | 6370 |
1 files changed, 0 insertions, 6370 deletions
diff --git a/wearable/gst/avi/gstavidemux.c b/wearable/gst/avi/gstavidemux.c deleted file mode 100755 index 8ea3c1c..0000000 --- a/wearable/gst/avi/gstavidemux.c +++ /dev/null @@ -1,6370 +0,0 @@ -/* GStreamer - * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com> - * Copyright (C) <2006> Nokia Corporation (contact <stefan.kost@nokia.com>) - * Copyright (C) <2009-2010> STEricsson <benjamin.gaignard@stericsson.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ -/* Element-Checklist-Version: 5 */ - -/** - * SECTION:element-avidemux - * - * Demuxes an .avi file into raw or compressed audio and/or video streams. - * - * This element supports both push and pull-based scheduling, depending on the - * capabilities of the upstream elements. - * - * <refsect2> - * <title>Example launch line</title> - * |[ - * gst-launch filesrc location=test.avi ! avidemux name=demux demux.audio_00 ! decodebin ! audioconvert ! audioresample ! autoaudiosink demux.video_00 ! queue ! decodebin ! ffmpegcolorspace ! videoscale ! autovideosink - * ]| Play (parse and decode) an .avi file and try to output it to - * an automatically detected soundcard and videosink. If the AVI file contains - * compressed audio or video data, this will only work if you have the - * right decoder elements/plugins installed. - * </refsect2> - * - * Last reviewed on 2006-12-29 (0.10.6) - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -/* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex - * with newer GLib versions (>= 2.31.0) */ -#define GLIB_DISABLE_DEPRECATION_WARNINGS - -#include <string.h> -#include <stdio.h> - -#ifdef DIVX_DRM /* need to check to use same define */ -#include <stdlib.h> -#include <dlfcn.h> -#endif - -#include "gst/riff/riff-media.h" -#include "gstavidemux.h" -#include "avi-ids.h" -#include <gst/gst-i18n-plugin.h> -#include <gst/base/gstadapter.h> - - -#define DIV_ROUND_UP(s,v) (((s) + ((v)-1)) / (v)) - -#define GST_AVI_KEYFRAME 1 -#ifdef AVIDEMUX_MODIFICATION -#define GST_AVI_NON_KEYFRAME 0 -#endif -#define ENTRY_IS_KEYFRAME(e) ((e)->flags == GST_AVI_KEYFRAME) -#define ENTRY_SET_KEYFRAME(e) ((e)->flags = GST_AVI_KEYFRAME) -#define ENTRY_UNSET_KEYFRAME(e) ((e)->flags = 0) - -#ifdef AVIDEMUX_MODIFICATION -enum -{ - PROP_0, - PROP_PLAYBACK_PROTECTION, -}; -#endif - -GST_DEBUG_CATEGORY_STATIC (avidemux_debug); -#define GST_CAT_DEFAULT avidemux_debug - -static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("video/x-msvideo") - ); - -#ifdef AVIDEMUX_MODIFICATION -/*Modification: Frame type enumeraions used to generat the index-table */ -typedef enum -{ - H264_NUT_UNKNOWN = 0, - H264_NUT_SLICE = 1, - H264_NUT_DPA = 2, - H264_NUT_DPB = 3, - H264_NUT_DPC = 4, - H264_NUT_IDR = 5, - H264_NUT_SEI = 6, - H264_NUT_SPS = 7, - H264_NUT_PPS = 8, - H264_NUT_AUD = 9, - H264_NUT_EOSEQ = 10, - H264_NUT_EOSTREAM = 11, - H264_NUT_FILL = 12, - H264_NUT_MIXED = 24, -} eH264NalType; -#endif - -static void gst_avi_demux_base_init (GstAviDemuxClass * klass); -static void gst_avi_demux_class_init (GstAviDemuxClass * klass); -static void gst_avi_demux_init (GstAviDemux * avi); -static void gst_avi_demux_finalize (GObject * object); - -static void gst_avi_demux_reset (GstAviDemux * avi); - -#if 0 -static const GstEventMask *gst_avi_demux_get_event_mask (GstPad * pad); -#endif -static gboolean gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event); -static gboolean gst_avi_demux_handle_sink_event (GstPad * pad, - GstEvent * event); -static gboolean gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event); - -#if 0 -static const GstFormat *gst_avi_demux_get_src_formats (GstPad * pad); -#endif -static const GstQueryType *gst_avi_demux_get_src_query_types (GstPad * pad); -static gboolean gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query); -static gboolean gst_avi_demux_src_convert (GstPad * pad, GstFormat src_format, - gint64 src_value, GstFormat * dest_format, gint64 * dest_value); - -static gboolean gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment); -static gboolean gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, - GstEvent * event); -static gboolean gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, - GstEvent * event); -static void gst_avi_demux_loop (GstPad * pad); -static gboolean gst_avi_demux_sink_activate (GstPad * sinkpad); -static gboolean gst_avi_demux_sink_activate_pull (GstPad * sinkpad, - gboolean active); -static gboolean gst_avi_demux_activate_push (GstPad * pad, gboolean active); -static GstFlowReturn gst_avi_demux_chain (GstPad * pad, GstBuffer * buf); - -static void gst_avi_demux_set_index (GstElement * element, GstIndex * index); -static GstIndex *gst_avi_demux_get_index (GstElement * element); -static GstStateChangeReturn gst_avi_demux_change_state (GstElement * element, - GstStateChange transition); -static void gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi); -static void gst_avi_demux_get_buffer_info (GstAviDemux * avi, - GstAviStream * stream, guint entry_n, GstClockTime * timestamp, - GstClockTime * ts_end, guint64 * offset, guint64 * offset_end); - -static void gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf); -#ifdef AVIDEMUX_MODIFICATION -/*Modification: Added function to find out the frame_type for index-table generation */ -static int -gst_avi_demux_find_frame_type (GstAviStream *stream, GstBuffer *buf, int *frame_type); -static void gst_avidemux_forward_trickplay (GstAviDemux * avi, GstAviStream * stream, guint64 *timestamp); -static void gst_avidemux_backward_trickplay (GstAviDemux * avi, GstAviStream * stream, guint64 *timestamp); -static GstFlowReturn gst_avidemux_seek_to_previous_keyframe (GstAviDemux *avi); -static void gst_avidemux_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); -static void gst_avidemux_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); -#endif - -static GstElementClass *parent_class = NULL; - -#ifdef DIVX_DRM - -typedef enum drmErrorCodes -{ - DRM_SUCCESS = 0, - DRM_NOT_AUTHORIZED, - DRM_NOT_REGISTERED, - DRM_RENTAL_EXPIRED, - DRM_GENERAL_ERROR, - DRM_NEVER_REGISTERED, -} drmErrorCodes_t; - - -#define DIVX_SDK_PLUGIN_NAME "libmm_divxsdk.so" - -static gboolean init_divx_plugin (GstAviDemux * avi) -{ - char *error; - avi->divx_handle = dlopen (DIVX_SDK_PLUGIN_NAME, RTLD_LAZY); - if (!avi->divx_handle) { - GST_ERROR ("dlopen failed [%s]", dlerror()); - return FALSE; - } - GST_DEBUG("dlopen success"); - - avi->divx_init = dlsym (avi->divx_handle, "divx_init"); - if ((error = dlerror()) != NULL) { - GST_ERROR ("[%s][%d]", __func__, __LINE__); - goto DL_ERROR; - } - - avi->divx_commit = dlsym (avi->divx_handle, "divx_commit"); - if ((error = dlerror()) != NULL) { - GST_ERROR ("[%s][%d] %p", __func__, __LINE__, avi->divx_commit); - goto DL_ERROR; - } - - avi->divx_decrypt_audio = dlsym (avi->divx_handle, "divx_decrypt_audio"); - GST_ERROR ("[%s][%d] %p", __func__, __LINE__, avi->divx_decrypt_audio); - if ((error = dlerror()) != NULL) { - goto DL_ERROR; - } - - avi->divx_prepare_video_bitstream = dlsym (avi->divx_handle, "divx_prepare_video_bitstream"); - if ((error = dlerror()) != NULL) { - GST_ERROR ("[%s][%d]", __func__, __LINE__); - goto DL_ERROR; - } - - avi->divx_finalize = dlsym (avi->divx_handle, "divx_finalize"); - if ((error = dlerror()) != NULL) { - GST_ERROR ("[%s][%d]", __func__, __LINE__); - goto DL_ERROR; - } - - return TRUE; - -DL_ERROR: - GST_ERROR ("error : %s", error); - dlclose(avi->divx_handle); - avi->divx_handle = NULL; - return FALSE; -} - - -/* ---------------------------------------------------- DIVX DRM Code : Start -----------------------------------------------------------------*/ -static gboolean -gst_avi_demux_init_divx_drm (GstAviDemux * avi, uint8_t* drm_info) -{ - int error_code = 0; - - if (init_divx_plugin (avi) == FALSE) { - GST_ERROR_OBJECT (avi, "Loading plugin failed...."); - return FALSE; - } - - avi->drmContext = avi->divx_init (drm_info, &error_code); - if (avi->drmContext) { - GST_DEBUG_OBJECT (avi,"%s init success: drmContext = %p\n", __func__, avi->drmContext); - } else { - GST_ERROR_OBJECT (avi,"%s failed to init... error code = %d \n", __func__, error_code); - return FALSE; - } - - error_code = avi->divx_commit (avi->drmContext); - if (error_code == DRM_SUCCESS) { - GST_DEBUG_OBJECT (avi,"%s commit success: drmContext = %p\n", __func__, avi->drmContext); - } else { - GST_ERROR_OBJECT (avi,"%s failed to commit... error code = %d \n", __func__, error_code); - return FALSE; - } - - return TRUE; -} - -static gboolean -gst_avi_demux_send_divx_tag (GstAviDemux * avi) -{ - gboolean ret = 0; - GstTagList *tags = NULL; - GST_ERROR_OBJECT (avi, "*********** posting divx drm tags!!!!!!!!!!!!!!!!!!"); - tags = gst_tag_list_new_full ("drm_divx", "1", NULL); - if (tags) { - ret = gst_avi_demux_push_event (avi, gst_event_new_tag (tags) ); - GST_ERROR_OBJECT (avi, "*********** posting tags returns [%d] !!!!!!!!!!!!!!!!!!", ret); - } - return ret; -} -/* ---------------------------------------------------- DIVX DRM Code : End -----------------------------------------------------------------*/ -#endif // DIVX_DRM -/* GObject methods */ - -GType -gst_avi_demux_get_type (void) -{ - static GType avi_demux_type = 0; - - if (!avi_demux_type) { - static const GTypeInfo avi_demux_info = { - sizeof (GstAviDemuxClass), - (GBaseInitFunc) gst_avi_demux_base_init, - NULL, - (GClassInitFunc) gst_avi_demux_class_init, - NULL, - NULL, - sizeof (GstAviDemux), - 0, - (GInstanceInitFunc) gst_avi_demux_init, - }; - - avi_demux_type = - g_type_register_static (GST_TYPE_ELEMENT, - "GstAviDemux", &avi_demux_info, 0); - } - - return avi_demux_type; -} - -static void -gst_avi_demux_base_init (GstAviDemuxClass * klass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - GstPadTemplate *videosrctempl, *audiosrctempl, *subsrctempl; - GstCaps *audcaps, *vidcaps, *subcaps; - - audcaps = gst_riff_create_audio_template_caps (); - gst_caps_append (audcaps, gst_caps_new_simple ("audio/x-avi-unknown", NULL)); - audiosrctempl = gst_pad_template_new ("audio_%02d", - GST_PAD_SRC, GST_PAD_SOMETIMES, audcaps); - - vidcaps = gst_riff_create_video_template_caps (); - gst_caps_append (vidcaps, gst_riff_create_iavs_template_caps ()); - gst_caps_append (vidcaps, gst_caps_new_simple ("video/x-avi-unknown", NULL)); - videosrctempl = gst_pad_template_new ("video_%02d", - GST_PAD_SRC, GST_PAD_SOMETIMES, vidcaps); - - subcaps = gst_caps_new_simple ("application/x-subtitle-avi", NULL); - subsrctempl = gst_pad_template_new ("subtitle_%02d", - GST_PAD_SRC, GST_PAD_SOMETIMES, subcaps); - gst_element_class_add_pad_template (element_class, audiosrctempl); - gst_element_class_add_pad_template (element_class, videosrctempl); - gst_element_class_add_pad_template (element_class, subsrctempl); - gst_element_class_add_static_pad_template (element_class, &sink_templ); - gst_object_unref (audiosrctempl); - gst_object_unref (videosrctempl); - gst_object_unref (subsrctempl); - gst_element_class_set_details_simple (element_class, "Avi demuxer", - "Codec/Demuxer", - "Demultiplex an avi file into audio and video", - "Erik Walthinsen <omega@cse.ogi.edu>, " - "Wim Taymans <wim.taymans@chello.be>, " - "Thijs Vermeir <thijsvermeir@gmail.com>"); -} - -static void -gst_avi_demux_class_init (GstAviDemuxClass * klass) -{ - GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); - GObjectClass *gobject_class = (GObjectClass *) klass; - - GST_DEBUG_CATEGORY_INIT (avidemux_debug, "avidemux", - 0, "Demuxer for AVI streams"); - - parent_class = g_type_class_peek_parent (klass); - - gobject_class->finalize = gst_avi_demux_finalize; - -#ifdef AVIDEMUX_MODIFICATION - gobject_class->set_property = gst_avidemux_set_property; - gobject_class->get_property = gst_avidemux_get_property; -#endif - - gstelement_class->change_state = - GST_DEBUG_FUNCPTR (gst_avi_demux_change_state); - - gstelement_class->set_index = GST_DEBUG_FUNCPTR (gst_avi_demux_set_index); - gstelement_class->get_index = GST_DEBUG_FUNCPTR (gst_avi_demux_get_index); - -#ifdef AVIDEMUX_MODIFICATION - g_object_class_install_property (gobject_class, PROP_PLAYBACK_PROTECTION, - g_param_spec_boolean ("playback-protection", "whether file is playback protected or not", - "TRUE->playback protected, FALSE->not playback protected", FALSE, - G_PARAM_READWRITE)); -#endif - -#ifdef DIVX_DRM - gst_tag_register ("drm_divx", GST_TAG_FLAG_META, - G_TYPE_STRING, - _("DRM DivX"), - _("a tag that is specific to DivX DRM File"), - NULL); -#endif -} - -#ifdef AVIDEMUX_MODIFICATION -static void -gst_avidemux_set_property (GObject * object, guint prop_id, - const GValue * value, GParamSpec * pspec) -{ - GstAviDemux *avi = GST_AVI_DEMUX (object); - switch (prop_id) { - case PROP_PLAYBACK_PROTECTION: - { - avi->playback_protected = g_value_get_boolean(value); - break; - } - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -gst_avidemux_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec) -{ - GstAviDemux *avi = GST_AVI_DEMUX (object); - - switch (prop_id) { - case PROP_PLAYBACK_PROTECTION: - { - g_value_set_boolean(value, avi->playback_protected); - break; - } - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} -#endif - -static void -gst_avi_demux_init (GstAviDemux * avi) -{ - avi->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink"); - gst_pad_set_activate_function (avi->sinkpad, - GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate)); - gst_pad_set_activatepull_function (avi->sinkpad, - GST_DEBUG_FUNCPTR (gst_avi_demux_sink_activate_pull)); - gst_pad_set_activatepush_function (avi->sinkpad, - GST_DEBUG_FUNCPTR (gst_avi_demux_activate_push)); - gst_pad_set_chain_function (avi->sinkpad, - GST_DEBUG_FUNCPTR (gst_avi_demux_chain)); - gst_pad_set_event_function (avi->sinkpad, - GST_DEBUG_FUNCPTR (gst_avi_demux_handle_sink_event)); - gst_element_add_pad (GST_ELEMENT_CAST (avi), avi->sinkpad); - - avi->adapter = gst_adapter_new (); -#ifdef AVIDEMUX_MODIFICATION - avi->playback_protected = FALSE; -#endif - gst_avi_demux_reset (avi); -} - -static void -gst_avi_demux_finalize (GObject * object) -{ - GstAviDemux *avi = GST_AVI_DEMUX (object); - - GST_DEBUG ("AVI: finalize"); - - g_object_unref (avi->adapter); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static void -gst_avi_demux_reset_stream (GstAviDemux * avi, GstAviStream * stream) -{ - g_free (stream->strh); - g_free (stream->strf.data); - g_free (stream->name); - g_free (stream->index); - g_free (stream->indexes); -#ifdef AVIDEMUX_MODIFICATION - if (stream->trickplay_info) - g_free (stream->trickplay_info); -#endif - - if (stream->initdata) - gst_buffer_unref (stream->initdata); - if (stream->extradata) - gst_buffer_unref (stream->extradata); - if (stream->pad) { - if (stream->exposed) { - gst_pad_set_active (stream->pad, FALSE); - gst_element_remove_pad (GST_ELEMENT_CAST (avi), stream->pad); - } else - gst_object_unref (stream->pad); - } - if (stream->taglist) { - gst_tag_list_free (stream->taglist); - stream->taglist = NULL; - } - memset (stream, 0, sizeof (GstAviStream)); -} - -static void -gst_avi_demux_reset (GstAviDemux * avi) -{ - gint i; - - GST_DEBUG ("AVI: reset"); - - for (i = 0; i < avi->num_streams; i++) - gst_avi_demux_reset_stream (avi, &avi->stream[i]); - - avi->header_state = GST_AVI_DEMUX_HEADER_TAG_LIST; - avi->num_streams = 0; - avi->num_v_streams = 0; - avi->num_a_streams = 0; - avi->num_t_streams = 0; - avi->main_stream = -1; - - avi->state = GST_AVI_DEMUX_START; - avi->offset = 0; - avi->building_index = FALSE; - - avi->index_offset = 0; - g_free (avi->avih); - avi->avih = NULL; - - if (avi->element_index) - gst_object_unref (avi->element_index); - avi->element_index = NULL; - - if (avi->close_seg_event) { - gst_event_unref (avi->close_seg_event); - avi->close_seg_event = NULL; - } - if (avi->seg_event) { - gst_event_unref (avi->seg_event); - avi->seg_event = NULL; - } - if (avi->seek_event) { - gst_event_unref (avi->seek_event); - avi->seek_event = NULL; - } - - if (avi->globaltags) - gst_tag_list_free (avi->globaltags); - avi->globaltags = NULL; - - avi->got_tags = TRUE; /* we always want to push global tags */ - avi->have_eos = FALSE; - avi->seekable = TRUE; - - gst_adapter_clear (avi->adapter); - - gst_segment_init (&avi->segment, GST_FORMAT_TIME); - -#ifdef DIVX_DRM - if(avi->drmContext) - { - avi->divx_finalize (avi->drmContext); - free(avi->drmContext); - avi->drmContext = NULL; - } - - if (avi->divx_handle) - { - dlclose(avi->divx_handle); - avi->divx_handle = NULL; - } -#endif -} - - -/* GstElement methods */ - -#if 0 -static const GstFormat * -gst_avi_demux_get_src_formats (GstPad * pad) -{ - GstAviStream *stream = gst_pad_get_element_private (pad); - - static const GstFormat src_a_formats[] = { - GST_FORMAT_TIME, - GST_FORMAT_BYTES, - GST_FORMAT_DEFAULT, - 0 - }; - static const GstFormat src_v_formats[] = { - GST_FORMAT_TIME, - GST_FORMAT_DEFAULT, - 0 - }; - - return (stream->strh->type == GST_RIFF_FCC_auds ? - src_a_formats : src_v_formats); -} -#endif - -/* assumes stream->strf.auds->av_bps != 0 */ -static inline GstClockTime -avi_stream_convert_bytes_to_time_unchecked (GstAviStream * stream, - guint64 bytes) -{ - return gst_util_uint64_scale_int (bytes, GST_SECOND, - stream->strf.auds->av_bps); -} - -static inline guint64 -avi_stream_convert_time_to_bytes_unchecked (GstAviStream * stream, - GstClockTime time) -{ - return gst_util_uint64_scale_int (time, stream->strf.auds->av_bps, - GST_SECOND); -} - -/* assumes stream->strh->rate != 0 */ -static inline GstClockTime -avi_stream_convert_frames_to_time_unchecked (GstAviStream * stream, - guint64 frames) -{ - return gst_util_uint64_scale (frames, stream->strh->scale * GST_SECOND, - stream->strh->rate); -} - -static inline guint64 -avi_stream_convert_time_to_frames_unchecked (GstAviStream * stream, - GstClockTime time) -{ - return gst_util_uint64_scale (time, stream->strh->rate, - stream->strh->scale * GST_SECOND); -} - -static gboolean -gst_avi_demux_src_convert (GstPad * pad, - GstFormat src_format, - gint64 src_value, GstFormat * dest_format, gint64 * dest_value) -{ - GstAviStream *stream = gst_pad_get_element_private (pad); - gboolean res = TRUE; - - GST_LOG_OBJECT (pad, - "Received src_format:%s, src_value:%" G_GUINT64_FORMAT - ", dest_format:%s", gst_format_get_name (src_format), src_value, - gst_format_get_name (*dest_format)); - - if (G_UNLIKELY (src_format == *dest_format)) { - *dest_value = src_value; - goto done; - } - if (G_UNLIKELY (!stream->strh || !stream->strf.data)) { - res = FALSE; - goto done; - } - if (G_UNLIKELY (stream->strh->type == GST_RIFF_FCC_vids && - (src_format == GST_FORMAT_BYTES - || *dest_format == GST_FORMAT_BYTES))) { - res = FALSE; - goto done; - } - - switch (src_format) { - case GST_FORMAT_TIME: - switch (*dest_format) { - case GST_FORMAT_BYTES: - *dest_value = gst_util_uint64_scale_int (src_value, - stream->strf.auds->av_bps, GST_SECOND); - break; - case GST_FORMAT_DEFAULT: - *dest_value = - gst_util_uint64_scale_round (src_value, stream->strh->rate, - stream->strh->scale * GST_SECOND); - break; - default: - res = FALSE; - break; - } - break; - case GST_FORMAT_BYTES: - switch (*dest_format) { - case GST_FORMAT_TIME: - if (stream->strf.auds->av_bps != 0) { - *dest_value = avi_stream_convert_bytes_to_time_unchecked (stream, - src_value); - } else - res = FALSE; - break; - default: - res = FALSE; - break; - } - break; - case GST_FORMAT_DEFAULT: - switch (*dest_format) { - case GST_FORMAT_TIME: - *dest_value = - avi_stream_convert_frames_to_time_unchecked (stream, src_value); - break; - default: - res = FALSE; - break; - } - break; - default: - res = FALSE; - } - -done: - GST_LOG_OBJECT (pad, - "Returning res:%d dest_format:%s dest_value:%" G_GUINT64_FORMAT, res, - gst_format_get_name (*dest_format), *dest_value); - return res; -} - -static const GstQueryType * -gst_avi_demux_get_src_query_types (GstPad * pad) -{ - static const GstQueryType src_types[] = { - GST_QUERY_POSITION, - GST_QUERY_DURATION, - GST_QUERY_SEEKING, - GST_QUERY_CONVERT, - 0 - }; - - return src_types; -} - -static gboolean -gst_avi_demux_handle_src_query (GstPad * pad, GstQuery * query) -{ - gboolean res = TRUE; - GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad)); - - GstAviStream *stream = gst_pad_get_element_private (pad); - - if (!stream->strh || !stream->strf.data) - return gst_pad_query_default (pad, query); - - switch (GST_QUERY_TYPE (query)) { - case GST_QUERY_POSITION:{ - gint64 pos = 0; - - GST_DEBUG ("pos query for stream %u: frames %u, bytes %u", - stream->num, stream->current_entry, stream->current_total); - - /* FIXME, this looks clumsy */ - if (stream->strh->type == GST_RIFF_FCC_auds) { - if (stream->is_vbr) { - /* VBR */ - pos = gst_util_uint64_scale ((gint64) stream->current_entry * - stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate); - GST_DEBUG_OBJECT (avi, "VBR convert frame %u, time %" - GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos)); - } else if (stream->strf.auds->av_bps != 0) { - /* CBR */ - pos = gst_util_uint64_scale (stream->current_total, GST_SECOND, - (guint64) stream->strf.auds->av_bps); - GST_DEBUG_OBJECT (avi, - "CBR convert bytes %u, time %" GST_TIME_FORMAT, - stream->current_total, GST_TIME_ARGS (pos)); - } else if (stream->idx_n != 0 && stream->total_bytes != 0) { - /* calculate timestamps based on percentage of length */ - guint64 xlen = avi->avih->us_frame * - avi->avih->tot_frames * GST_USECOND; - - if (stream->is_vbr) { - pos = gst_util_uint64_scale (xlen, stream->current_entry, - stream->idx_n); - GST_DEBUG_OBJECT (avi, "VBR perc convert frame %u, time %" - GST_TIME_FORMAT, stream->current_entry, GST_TIME_ARGS (pos)); - } else { - pos = gst_util_uint64_scale (xlen, stream->current_total, - stream->total_bytes); - GST_DEBUG_OBJECT (avi, - "CBR perc convert bytes %u, time %" GST_TIME_FORMAT, - stream->current_total, GST_TIME_ARGS (pos)); - } - } else { - /* we don't know */ - res = FALSE; - } - } else { - if (stream->strh->rate != 0) { - pos = gst_util_uint64_scale ((guint64) stream->current_entry * - stream->strh->scale, GST_SECOND, (guint64) stream->strh->rate); - } else { - pos = stream->current_entry * avi->avih->us_frame * GST_USECOND; - } - } - if (res) { - GST_DEBUG ("pos query : %" GST_TIME_FORMAT, GST_TIME_ARGS (pos)); - gst_query_set_position (query, GST_FORMAT_TIME, pos); - } else - GST_WARNING ("pos query failed"); - break; - } - case GST_QUERY_DURATION: - { - GstFormat fmt; - GstClockTime duration; - - /* only act on audio or video streams */ - if (stream->strh->type != GST_RIFF_FCC_auds && - stream->strh->type != GST_RIFF_FCC_vids) { - res = FALSE; - break; - } - - /* take stream duration, fall back to avih duration */ - if ((duration = stream->duration) == -1) - duration = avi->duration; - - gst_query_parse_duration (query, &fmt, NULL); - - switch (fmt) { - case GST_FORMAT_TIME: - gst_query_set_duration (query, fmt, duration); - break; - case GST_FORMAT_DEFAULT: - { - gint64 dur; - GST_DEBUG_OBJECT (query, "total frames is %" G_GUINT32_FORMAT, - stream->idx_n); - - gst_query_set_duration (query, fmt, stream->idx_n); - break; - } - default: - res = FALSE; - break; - } - break; - } - case GST_QUERY_SEEKING:{ - GstFormat fmt; - - gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL); - if (fmt == GST_FORMAT_TIME) { - gboolean seekable = TRUE; - - if (avi->streaming) { - seekable = avi->seekable; - } - - gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, - 0, stream->duration); - res = TRUE; - } - break; - } - case GST_QUERY_CONVERT:{ - GstFormat src_fmt, dest_fmt; - gint64 src_val, dest_val; - - gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val); - if ((res = gst_avi_demux_src_convert (pad, src_fmt, src_val, &dest_fmt, - &dest_val))) - gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val); - else - res = gst_pad_query_default (pad, query); - break; - } - default: - res = gst_pad_query_default (pad, query); - break; - } - - gst_object_unref (avi); - return res; -} - -#if 0 -static const GstEventMask * -gst_avi_demux_get_event_mask (GstPad * pad) -{ - static const GstEventMask masks[] = { - {GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_KEY_UNIT}, - {0,} - }; - - return masks; -} -#endif - -static guint64 -gst_avi_demux_seek_streams (GstAviDemux * avi, guint64 offset, gboolean before) -{ - GstAviStream *stream; - GstIndexEntry *entry; - gint i; - gint64 val, min = offset; - - for (i = 0; i < avi->num_streams; i++) { - stream = &avi->stream[i]; - - entry = gst_index_get_assoc_entry (avi->element_index, stream->index_id, - before ? GST_INDEX_LOOKUP_BEFORE : GST_INDEX_LOOKUP_AFTER, - GST_ASSOCIATION_FLAG_NONE, GST_FORMAT_BYTES, offset); - - if (before) { - if (entry) { - gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val); - GST_DEBUG_OBJECT (avi, "stream %d, previous entry at %" - G_GUINT64_FORMAT, i, val); - if (val < min) - min = val; - } - continue; - } - - if (!entry) { - GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i); - stream->current_entry = 0; - stream->current_total = 0; - continue; - } - - gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &val); - GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, - i, val); - - gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &val); - stream->current_total = val; - gst_index_entry_assoc_map (entry, GST_FORMAT_DEFAULT, &val); - stream->current_entry = val; - } - - return min; -} - -static guint -gst_avi_demux_index_entry_offset_search (GstAviIndexEntry * entry, - guint64 * offset) -{ - if (entry->offset < *offset) - return -1; - else if (entry->offset > *offset) - return 1; - return 0; -} - -static guint64 -gst_avi_demux_seek_streams_index (GstAviDemux * avi, guint64 offset, - gboolean before) -{ - GstAviStream *stream; - GstAviIndexEntry *entry; - gint i; - gint64 val, min = offset; - guint index = 0; - - for (i = 0; i < avi->num_streams; i++) { - stream = &avi->stream[i]; - - /* compensate for chunk header */ - offset += 8; - entry = - gst_util_array_binary_search (stream->index, stream->idx_n, - sizeof (GstAviIndexEntry), - (GCompareDataFunc) gst_avi_demux_index_entry_offset_search, - before ? GST_SEARCH_MODE_BEFORE : GST_SEARCH_MODE_AFTER, &offset, NULL); - offset -= 8; - - if (entry) - index = entry - stream->index; - - if (before) { - if (entry) { - val = stream->index[index].offset; - GST_DEBUG_OBJECT (avi, - "stream %d, previous entry at %" G_GUINT64_FORMAT, i, val); - if (val < min) - min = val; - } - continue; - } - - if (!entry) { - GST_DEBUG_OBJECT (avi, "no position for stream %d, assuming at start", i); - stream->current_entry = 0; - stream->current_total = 0; - continue; - } - - val = stream->index[index].offset - 8; - GST_DEBUG_OBJECT (avi, "stream %d, next entry at %" G_GUINT64_FORMAT, i, - val); - - stream->current_total = stream->index[index].total; - stream->current_entry = index; - } - - return min; -} - -#define GST_AVI_SEEK_PUSH_DISPLACE (4 * GST_SECOND) - -static gboolean -gst_avi_demux_handle_sink_event (GstPad * pad, GstEvent * event) -{ - gboolean res = TRUE; - GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad)); - - GST_DEBUG_OBJECT (avi, - "have event type %s: %p on sink pad", GST_EVENT_TYPE_NAME (event), event); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_NEWSEGMENT: - { - GstFormat format; - gdouble rate, arate; - gint64 start, stop, time, offset = 0; - gboolean update; - GstSegment segment; - - /* some debug output */ - gst_segment_init (&segment, GST_FORMAT_UNDEFINED); - gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format, - &start, &stop, &time); - gst_segment_set_newsegment_full (&segment, update, rate, arate, format, - start, stop, time); - GST_DEBUG_OBJECT (avi, - "received format %d newsegment %" GST_SEGMENT_FORMAT, format, - &segment); - - /* chain will send initial newsegment after pads have been added */ - if (avi->state != GST_AVI_DEMUX_MOVI) { - GST_DEBUG_OBJECT (avi, "still starting, eating event"); - goto exit; - } - - /* we only expect a BYTE segment, e.g. following a seek */ - if (format != GST_FORMAT_BYTES) { - GST_DEBUG_OBJECT (avi, "unsupported segment format, ignoring"); - goto exit; - } - - if (avi->have_index) { - GstAviIndexEntry *entry; - guint i = 0, index = 0, k = 0; - GstAviStream *stream; - - /* compensate chunk header, stored index offset points after header */ - start += 8; - /* find which stream we're on */ - do { - stream = &avi->stream[i]; - - /* find the index for start bytes offset */ - entry = gst_util_array_binary_search (stream->index, - stream->idx_n, sizeof (GstAviIndexEntry), - (GCompareDataFunc) gst_avi_demux_index_entry_offset_search, - GST_SEARCH_MODE_AFTER, &start, NULL); - - if (entry == NULL) - continue; - index = entry - stream->index; - - /* we are on the stream with a chunk start offset closest to start */ - if (!offset || stream->index[index].offset < offset) { - offset = stream->index[index].offset; - k = i; - } - /* exact match needs no further searching */ - if (stream->index[index].offset == start) - break; - } while (++i < avi->num_streams); - start -= 8; - offset -= 8; - stream = &avi->stream[k]; - - /* so we have no idea what is to come, or where we are */ - if (!offset) { - GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS"); - goto eos; - } - - /* get the ts corresponding to start offset bytes for the stream */ - gst_avi_demux_get_buffer_info (avi, stream, index, - (GstClockTime *) & time, NULL, NULL, NULL); - } else if (avi->element_index) { - GstIndexEntry *entry; - - /* Let's check if we have an index entry for this position */ - entry = gst_index_get_assoc_entry (avi->element_index, avi->index_id, - GST_INDEX_LOOKUP_AFTER, GST_ASSOCIATION_FLAG_NONE, - GST_FORMAT_BYTES, start); - - /* we can not go where we have not yet been before ... */ - if (!entry) { - GST_WARNING_OBJECT (avi, "insufficient index data, forcing EOS"); - goto eos; - } - - gst_index_entry_assoc_map (entry, GST_FORMAT_TIME, &time); - gst_index_entry_assoc_map (entry, GST_FORMAT_BYTES, &offset); - } else { - GST_WARNING_OBJECT (avi, "no index data, forcing EOS"); - goto eos; - } - - stop = GST_CLOCK_TIME_NONE; - - /* set up segment and send downstream */ - gst_segment_set_newsegment_full (&avi->segment, update, rate, arate, - GST_FORMAT_TIME, time, stop, time); - GST_DEBUG_OBJECT (avi, "Pushing newseg update %d, rate %g, " - "applied rate %g, format %d, start %" G_GINT64_FORMAT ", " - "stop %" G_GINT64_FORMAT, update, rate, arate, GST_FORMAT_TIME, - time, stop); - gst_avi_demux_push_event (avi, - gst_event_new_new_segment_full (update, rate, arate, GST_FORMAT_TIME, - time, stop, time)); - - GST_DEBUG_OBJECT (avi, "next chunk expected at %" G_GINT64_FORMAT, start); - - /* adjust state for streaming thread accordingly */ - if (avi->have_index) - gst_avi_demux_seek_streams_index (avi, offset, FALSE); - else - gst_avi_demux_seek_streams (avi, offset, FALSE); - - /* set up streaming thread */ - g_assert (offset >= start); - avi->offset = start; - avi->todrop = offset - start; - - exit: - gst_event_unref (event); - res = TRUE; - break; - eos: - /* set up for EOS */ - avi->have_eos = TRUE; - goto exit; - } - case GST_EVENT_EOS: - { - if (avi->state != GST_AVI_DEMUX_MOVI) { - gst_event_unref (event); - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, - (NULL), ("got eos and didn't receive a complete header object")); - } else if (!gst_avi_demux_push_event (avi, event)) { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, - (NULL), ("got eos but no streams (yet)")); - } - break; - } - case GST_EVENT_FLUSH_STOP: - { - gint i; - - gst_adapter_clear (avi->adapter); - avi->have_eos = FALSE; - for (i = 0; i < avi->num_streams; i++) { - avi->stream[i].last_flow = GST_FLOW_OK; - avi->stream[i].discont = TRUE; - avi->stream[i].sent_eos = FALSE; - } - /* fall through to default case so that the event gets passed downstream */ - } - default: - res = gst_pad_event_default (pad, event); - break; - } - - gst_object_unref (avi); - - return res; -} - -static gboolean -gst_avi_demux_handle_src_event (GstPad * pad, GstEvent * event) -{ - gboolean res = TRUE; - GstAviDemux *avi = GST_AVI_DEMUX (gst_pad_get_parent (pad)); - - GST_DEBUG_OBJECT (avi, - "have event type %s: %p on src pad", GST_EVENT_TYPE_NAME (event), event); - - switch (GST_EVENT_TYPE (event)) { - case GST_EVENT_SEEK: - if (!avi->streaming) { - res = gst_avi_demux_handle_seek (avi, pad, event); - } else { - res = gst_avi_demux_handle_seek_push (avi, pad, event); - } - gst_event_unref (event); - break; - case GST_EVENT_QOS: - case GST_EVENT_NAVIGATION: - res = FALSE; - gst_event_unref (event); - break; - default: - res = gst_pad_event_default (pad, event); - break; - } - - gst_object_unref (avi); - - return res; -} - -/* streaming helper (push) */ - -/* - * gst_avi_demux_peek_chunk_info: - * @avi: Avi object - * @tag: holder for tag - * @size: holder for tag size - * - * Peek next chunk info (tag and size) - * - * Returns: TRUE when one chunk info has been got - */ -static gboolean -gst_avi_demux_peek_chunk_info (GstAviDemux * avi, guint32 * tag, guint32 * size) -{ - const guint8 *data = NULL; - - if (gst_adapter_available (avi->adapter) < 8) - return FALSE; - - data = gst_adapter_peek (avi->adapter, 8); - *tag = GST_READ_UINT32_LE (data); - *size = GST_READ_UINT32_LE (data + 4); - - return TRUE; -} - -/* - * gst_avi_demux_peek_chunk: - * @avi: Avi object - * @tag: holder for tag - * @size: holder for tag size - * - * Peek enough data for one full chunk - * - * Returns: %TRUE when one chunk has been got - */ -static gboolean -gst_avi_demux_peek_chunk (GstAviDemux * avi, guint32 * tag, guint32 * size) -{ - guint32 peek_size = 0; - gint available; - - if (!gst_avi_demux_peek_chunk_info (avi, tag, size)) - goto peek_failed; - - /* size 0 -> empty data buffer would surprise most callers, - * large size -> do not bother trying to squeeze that into adapter, - * so we throw poor man's exception, which can be caught if caller really - * wants to handle 0 size chunk */ - if (!(*size) || (*size) >= (1 << 30)) - goto strange_size; - - peek_size = (*size + 1) & ~1; - available = gst_adapter_available (avi->adapter); - - GST_DEBUG_OBJECT (avi, - "Need to peek chunk of %d bytes to read chunk %" GST_FOURCC_FORMAT - ", %d bytes available", *size, GST_FOURCC_ARGS (*tag), available); - - if (available < (8 + peek_size)) - goto need_more; - - return TRUE; - - /* ERRORS */ -peek_failed: - { - GST_INFO_OBJECT (avi, "Failed to peek"); - return FALSE; - } -strange_size: - { - GST_INFO_OBJECT (avi, - "Invalid/unexpected chunk size %d for tag %" GST_FOURCC_FORMAT, *size, - GST_FOURCC_ARGS (*tag)); - /* chain should give up */ - avi->abort_buffering = TRUE; - return FALSE; - } -need_more: - { - GST_INFO_OBJECT (avi, "need more %d < %" G_GUINT32_FORMAT, - available, 8 + peek_size); - return FALSE; - } -} - -/* AVI init */ - -/* - * gst_avi_demux_parse_file_header: - * @element: caller element (used for errors/debug). - * @buf: input data to be used for parsing. - * - * "Open" a RIFF/AVI file. The buffer should be at least 12 - * bytes long. Takes ownership of @buf. - * - * Returns: TRUE if the file is a RIFF/AVI file, FALSE otherwise. - * Throws an error, caller should error out (fatal). - */ -static gboolean -gst_avi_demux_parse_file_header (GstElement * element, GstBuffer * buf) -{ - guint32 doctype; - GstClockTime stamp; - - stamp = gst_util_get_timestamp (); - - /* riff_parse posts an error */ - if (!gst_riff_parse_file_header (element, buf, &doctype)) - return FALSE; - - if (doctype != GST_RIFF_RIFF_AVI) - goto not_avi; - - stamp = gst_util_get_timestamp () - stamp; - GST_DEBUG_OBJECT (element, "header parsing took %" GST_TIME_FORMAT, - GST_TIME_ARGS (stamp)); - - return TRUE; - - /* ERRORS */ -not_avi: - { - GST_ELEMENT_ERROR (element, STREAM, WRONG_TYPE, (NULL), - ("File is not an AVI file: %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (doctype))); - return FALSE; - } -} - -/* - * Read AVI file tag when streaming - */ -static GstFlowReturn -gst_avi_demux_stream_init_push (GstAviDemux * avi) -{ - if (gst_adapter_available (avi->adapter) >= 12) { - GstBuffer *tmp; - - tmp = gst_adapter_take_buffer (avi->adapter, 12); - - GST_DEBUG ("Parsing avi header"); - if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), tmp)) { - return GST_FLOW_ERROR; - } - GST_DEBUG ("header ok"); - avi->offset += 12; - - avi->state = GST_AVI_DEMUX_HEADER; - } - return GST_FLOW_OK; -} - -/* - * Read AVI file tag - */ -static GstFlowReturn -gst_avi_demux_stream_init_pull (GstAviDemux * avi) -{ - GstFlowReturn res; - GstBuffer *buf = NULL; - - res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf); - if (res != GST_FLOW_OK) - return res; - else if (!gst_avi_demux_parse_file_header (GST_ELEMENT_CAST (avi), buf)) - goto wrong_header; - - avi->offset += 12; - - return GST_FLOW_OK; - - /* ERRORS */ -wrong_header: - { - GST_DEBUG_OBJECT (avi, "error parsing file header"); - return GST_FLOW_ERROR; - } -} - -/* AVI header handling */ -/* - * gst_avi_demux_parse_avih: - * @avi: caller element (used for errors/debug). - * @buf: input data to be used for parsing. - * @avih: pointer to structure (filled in by function) containing - * stream information (such as flags, number of streams, etc.). - * - * Read 'avih' header. Discards buffer after use. - * - * Returns: TRUE on success, FALSE otherwise. Throws an error if - * the header is invalid. The caller should error out - * (fatal). - */ -static gboolean -gst_avi_demux_parse_avih (GstAviDemux * avi, - GstBuffer * buf, gst_riff_avih ** _avih) -{ - gst_riff_avih *avih; - - if (buf == NULL) - goto no_buffer; - - if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_avih)) - goto avih_too_small; - - avih = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); - -#if (G_BYTE_ORDER == G_BIG_ENDIAN) - avih->us_frame = GUINT32_FROM_LE (avih->us_frame); - avih->max_bps = GUINT32_FROM_LE (avih->max_bps); - avih->pad_gran = GUINT32_FROM_LE (avih->pad_gran); - avih->flags = GUINT32_FROM_LE (avih->flags); - avih->tot_frames = GUINT32_FROM_LE (avih->tot_frames); - avih->init_frames = GUINT32_FROM_LE (avih->init_frames); - avih->streams = GUINT32_FROM_LE (avih->streams); - avih->bufsize = GUINT32_FROM_LE (avih->bufsize); - avih->width = GUINT32_FROM_LE (avih->width); - avih->height = GUINT32_FROM_LE (avih->height); - avih->scale = GUINT32_FROM_LE (avih->scale); - avih->rate = GUINT32_FROM_LE (avih->rate); - avih->start = GUINT32_FROM_LE (avih->start); - avih->length = GUINT32_FROM_LE (avih->length); -#endif - - /* debug stuff */ - GST_INFO_OBJECT (avi, "avih tag found:"); - GST_INFO_OBJECT (avi, " us_frame %u", avih->us_frame); - GST_INFO_OBJECT (avi, " max_bps %u", avih->max_bps); - GST_INFO_OBJECT (avi, " pad_gran %u", avih->pad_gran); - GST_INFO_OBJECT (avi, " flags 0x%08x", avih->flags); - GST_INFO_OBJECT (avi, " tot_frames %u", avih->tot_frames); - GST_INFO_OBJECT (avi, " init_frames %u", avih->init_frames); - GST_INFO_OBJECT (avi, " streams %u", avih->streams); - GST_INFO_OBJECT (avi, " bufsize %u", avih->bufsize); - GST_INFO_OBJECT (avi, " width %u", avih->width); - GST_INFO_OBJECT (avi, " height %u", avih->height); - GST_INFO_OBJECT (avi, " scale %u", avih->scale); - GST_INFO_OBJECT (avi, " rate %u", avih->rate); - GST_INFO_OBJECT (avi, " start %u", avih->start); - GST_INFO_OBJECT (avi, " length %u", avih->length); - - *_avih = avih; - gst_buffer_unref (buf); - - if (avih->us_frame != 0 && avih->tot_frames != 0) - avi->duration = - (guint64) avih->us_frame * (guint64) avih->tot_frames * 1000; - else - avi->duration = GST_CLOCK_TIME_NONE; - - GST_INFO_OBJECT (avi, " header duration %" GST_TIME_FORMAT, - GST_TIME_ARGS (avi->duration)); - - return TRUE; - - /* ERRORS */ -no_buffer: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No buffer")); - return FALSE; - } -avih_too_small: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Too small avih (%d available, %d needed)", - GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_avih))); - gst_buffer_unref (buf); - return FALSE; - } -} - -/* - * gst_avi_demux_parse_superindex: - * @avi: caller element (used for debugging/errors). - * @buf: input data to use for parsing. - * @locations: locations in the file (byte-offsets) that contain - * the actual indexes (see get_avi_demux_parse_subindex()). - * The array ends with GST_BUFFER_OFFSET_NONE. - * - * Reads superindex (openDML-2 spec stuff) from the provided data. - * - * Returns: TRUE on success, FALSE otherwise. Indexes should be skipped - * on error, but they are not fatal. - */ -static gboolean -gst_avi_demux_parse_superindex (GstAviDemux * avi, - GstBuffer * buf, guint64 ** _indexes) -{ - guint8 *data; - guint16 bpe = 16; - guint32 num, i; - guint64 *indexes; - guint size; - - *_indexes = NULL; - - size = buf ? GST_BUFFER_SIZE (buf) : 0; - if (size < 24) - goto too_small; - - data = GST_BUFFER_DATA (buf); - - /* check type of index. The opendml2 specs state that - * there should be 4 dwords per array entry. Type can be - * either frame or field (and we don't care). */ - if (GST_READ_UINT16_LE (data) != 4 || - (data[2] & 0xfe) != 0x0 || data[3] != 0x0) { - GST_WARNING_OBJECT (avi, - "Superindex for stream has unexpected " - "size_entry %d (bytes) or flags 0x%02x/0x%02x", - GST_READ_UINT16_LE (data), data[2], data[3]); - bpe = GST_READ_UINT16_LE (data) * 4; - } - num = GST_READ_UINT32_LE (&data[4]); - - GST_DEBUG_OBJECT (avi, "got %d indexes", num); - - /* this can't work out well ... */ - if (num > G_MAXUINT32 >> 1 || bpe < 8) { - goto invalid_params; - } - - indexes = g_new (guint64, num + 1); - for (i = 0; i < num; i++) { - if (size < 24 + bpe * (i + 1)) - break; - indexes[i] = GST_READ_UINT64_LE (&data[24 + bpe * i]); - GST_DEBUG_OBJECT (avi, "index %d at %" G_GUINT64_FORMAT, i, indexes[i]); - } - indexes[i] = GST_BUFFER_OFFSET_NONE; - *_indexes = indexes; - - gst_buffer_unref (buf); - - return TRUE; - - /* ERRORS */ -too_small: - { - GST_ERROR_OBJECT (avi, - "Not enough data to parse superindex (%d available, 24 needed)", size); - if (buf) - gst_buffer_unref (buf); - return FALSE; - } -invalid_params: - { - GST_ERROR_OBJECT (avi, "invalid index parameters (num = %d, bpe = %d)", - num, bpe); - gst_buffer_unref (buf); - return FALSE; - } -} - -/* add an entry to the index of a stream. @num should be an estimate of the - * total amount of index entries for all streams and is used to dynamically - * allocate memory for the index entries. */ -static inline gboolean -gst_avi_demux_add_index (GstAviDemux * avi, GstAviStream * stream, - guint num, GstAviIndexEntry * entry) -{ - /* ensure index memory */ - if (G_UNLIKELY (stream->idx_n >= stream->idx_max)) { - guint idx_max = stream->idx_max; - GstAviIndexEntry *new_idx; - - /* we need to make some more room */ - if (idx_max == 0) { - /* initial size guess, assume each stream has an equal amount of entries, - * overshoot with at least 8K */ - idx_max = (num / avi->num_streams) + (8192 / sizeof (GstAviIndexEntry)); - } else { - idx_max += 8192 / sizeof (GstAviIndexEntry); - GST_DEBUG_OBJECT (avi, "expanded index from %u to %u", - stream->idx_max, idx_max); - } - new_idx = g_try_renew (GstAviIndexEntry, stream->index, idx_max); - /* out of memory, if this fails stream->index is untouched. */ - if (G_UNLIKELY (!new_idx)) - return FALSE; - /* use new index */ - stream->index = new_idx; - stream->idx_max = idx_max; - } - - /* update entry total and stream stats. The entry total can be converted to - * the timestamp of the entry easily. */ - if (stream->strh->type == GST_RIFF_FCC_auds) { - gint blockalign; - - if (stream->is_vbr) { - entry->total = stream->total_blocks; - } else { - entry->total = stream->total_bytes; - } - blockalign = stream->strf.auds->blockalign; - if (blockalign > 0) - stream->total_blocks += DIV_ROUND_UP (entry->size, blockalign); - else - stream->total_blocks++; - } else { - if (stream->is_vbr) { - entry->total = stream->idx_n; - } else { - entry->total = stream->total_bytes; - } - } - stream->total_bytes += entry->size; - if (ENTRY_IS_KEYFRAME (entry)) - stream->n_keyframes++; - - /* and add */ - GST_LOG_OBJECT (avi, - "Adding stream %u, index entry %d, kf %d, size %u " - ", offset %" G_GUINT64_FORMAT ", total %" G_GUINT64_FORMAT, stream->num, - stream->idx_n, ENTRY_IS_KEYFRAME (entry), entry->size, entry->offset, - entry->total); - stream->index[stream->idx_n++] = *entry; - - return TRUE; -} - -/* given @entry_n in @stream, calculate info such as timestamps and - * offsets for the entry. */ -static void -gst_avi_demux_get_buffer_info (GstAviDemux * avi, GstAviStream * stream, - guint entry_n, GstClockTime * timestamp, GstClockTime * ts_end, - guint64 * offset, guint64 * offset_end) -{ - GstAviIndexEntry *entry; - - entry = &stream->index[entry_n]; - - if (stream->is_vbr) { - /* VBR stream next timestamp */ - if (stream->strh->type == GST_RIFF_FCC_auds) { - if (timestamp) - *timestamp = - avi_stream_convert_frames_to_time_unchecked (stream, entry->total); - if (ts_end) - *ts_end = avi_stream_convert_frames_to_time_unchecked (stream, - entry->total + 1); - } else { - if (timestamp) - *timestamp = - avi_stream_convert_frames_to_time_unchecked (stream, entry_n); - if (ts_end) - *ts_end = avi_stream_convert_frames_to_time_unchecked (stream, - entry_n + 1); - } - } else if (stream->strh->type == GST_RIFF_FCC_auds) { - /* constant rate stream */ - if (timestamp) - *timestamp = - avi_stream_convert_bytes_to_time_unchecked (stream, entry->total); - if (ts_end) - *ts_end = avi_stream_convert_bytes_to_time_unchecked (stream, - entry->total + entry->size); - } - if (stream->strh->type == GST_RIFF_FCC_vids) { - /* video offsets are the frame number */ - if (offset) - *offset = entry_n; - if (offset_end) - *offset_end = entry_n + 1; - } else { - /* no offsets for audio */ - if (offset) - *offset = -1; - if (offset_end) - *offset_end = -1; - } -} - -/* collect and debug stats about the indexes for all streams. - * This method is also responsible for filling in the stream duration - * as measured by the amount of index entries. - * - * Returns TRUE if the index is not empty, else FALSE */ -static gboolean -gst_avi_demux_do_index_stats (GstAviDemux * avi) -{ - guint total_idx = 0; - guint i; -#ifndef GST_DISABLE_GST_DEBUG - guint total_max = 0; -#endif - - /* get stream stats now */ - for (i = 0; i < avi->num_streams; i++) { - GstAviStream *stream; - - if (G_UNLIKELY (!(stream = &avi->stream[i]))) - continue; - if (G_UNLIKELY (!stream->strh)) - continue; - if (G_UNLIKELY (!stream->index || stream->idx_n == 0)) - continue; - - /* we interested in the end_ts of the last entry, which is the total - * duration of this stream */ - gst_avi_demux_get_buffer_info (avi, stream, stream->idx_n - 1, - NULL, &stream->idx_duration, NULL, NULL); - - total_idx += stream->idx_n; -#ifndef GST_DISABLE_GST_DEBUG - total_max += stream->idx_max; -#endif - GST_INFO_OBJECT (avi, "Stream %d, dur %" GST_TIME_FORMAT ", %6u entries, " - "%5u keyframes, entry size = %2u, total size = %10u, allocated %10u", - i, GST_TIME_ARGS (stream->idx_duration), stream->idx_n, - stream->n_keyframes, (guint) sizeof (GstAviIndexEntry), - (guint) (stream->idx_n * sizeof (GstAviIndexEntry)), - (guint) (stream->idx_max * sizeof (GstAviIndexEntry))); - } - total_idx *= sizeof (GstAviIndexEntry); -#ifndef GST_DISABLE_GST_DEBUG - total_max *= sizeof (GstAviIndexEntry); -#endif - GST_INFO_OBJECT (avi, "%u bytes for index vs %u ideally, %u wasted", - total_max, total_idx, total_max - total_idx); - - if (total_idx == 0) { - GST_WARNING_OBJECT (avi, "Index is empty !"); - return FALSE; - } - return TRUE; -} - -/* - * gst_avi_demux_parse_subindex: - * @avi: Avi object - * @buf: input data to use for parsing. - * @stream: stream context. - * @entries_list: a list (returned by the function) containing all the - * indexes parsed in this specific subindex. The first - * entry is also a pointer to allocated memory that needs - * to be free´ed. May be NULL if no supported indexes were - * found. - * - * Reads superindex (openDML-2 spec stuff) from the provided data. - * The buffer should contain a GST_RIFF_TAG_ix?? chunk. - * - * Returns: TRUE on success, FALSE otherwise. Errors are fatal, we - * throw an error, caller should bail out asap. - */ -static gboolean -gst_avi_demux_parse_subindex (GstAviDemux * avi, GstAviStream * stream, - GstBuffer * buf) -{ - guint8 *data; - guint16 bpe; - guint32 num, i; - guint64 baseoff; - guint size; - - if (!buf) - return TRUE; - - size = GST_BUFFER_SIZE (buf); - - /* check size */ - if (size < 24) - goto too_small; - - data = GST_BUFFER_DATA (buf); - - /* We don't support index-data yet */ - if (data[3] & 0x80) - goto not_implemented; - - /* check type of index. The opendml2 specs state that - * there should be 4 dwords per array entry. Type can be - * either frame or field (and we don't care). */ - bpe = (data[2] & 0x01) ? 12 : 8; - if (GST_READ_UINT16_LE (data) != bpe / 4 || - (data[2] & 0xfe) != 0x0 || data[3] != 0x1) { - GST_WARNING_OBJECT (avi, - "Superindex for stream %d has unexpected " - "size_entry %d (bytes) or flags 0x%02x/0x%02x", - stream->num, GST_READ_UINT16_LE (data), data[2], data[3]); - bpe = GST_READ_UINT16_LE (data) * 4; - } - num = GST_READ_UINT32_LE (&data[4]); - baseoff = GST_READ_UINT64_LE (&data[12]); - - /* If there's nothing, just return ! */ - if (num == 0) - goto empty_index; - - GST_INFO_OBJECT (avi, "Parsing subindex, nr_entries = %6d", num); - - for (i = 0; i < num; i++) { - GstAviIndexEntry entry; - - if (size < 24 + bpe * (i + 1)) - break; - - /* fill in offset and size. offset contains the keyframe flag in the - * upper bit*/ - entry.offset = baseoff + GST_READ_UINT32_LE (&data[24 + bpe * i]); - entry.size = GST_READ_UINT32_LE (&data[24 + bpe * i + 4]); - /* handle flags */ - if (stream->strh->type == GST_RIFF_FCC_auds) { - /* all audio frames are keyframes */ - ENTRY_SET_KEYFRAME (&entry); - } else { - /* else read flags */ - entry.flags = (entry.size & 0x80000000) ? 0 : GST_AVI_KEYFRAME; - } - entry.size &= ~0x80000000; - - /* and add */ - if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry))) - goto out_of_mem; - } - gst_buffer_unref (buf); - - return TRUE; - - /* ERRORS */ -too_small: - { - GST_ERROR_OBJECT (avi, - "Not enough data to parse subindex (%d available, 24 needed)", size); - gst_buffer_unref (buf); - return TRUE; /* continue */ - } -not_implemented: - { - GST_ELEMENT_ERROR (avi, STREAM, NOT_IMPLEMENTED, (NULL), - ("Subindex-is-data is not implemented")); - gst_buffer_unref (buf); - return FALSE; - } -empty_index: - { - GST_DEBUG_OBJECT (avi, "the index is empty"); - gst_buffer_unref (buf); - return TRUE; - } -out_of_mem: - { - GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL), - ("Cannot allocate memory for %u*%u=%u bytes", - (guint) sizeof (GstAviIndexEntry), num, - (guint) sizeof (GstAviIndexEntry) * num)); - gst_buffer_unref (buf); - return FALSE; - } -} - -/* - * Create and push a flushing seek event upstream - */ -static gboolean -perform_seek_to_offset (GstAviDemux * demux, guint64 offset) -{ - GstEvent *event; - gboolean res = 0; - - GST_DEBUG_OBJECT (demux, "Seeking to %" G_GUINT64_FORMAT, offset); - - event = - gst_event_new_seek (1.0, GST_FORMAT_BYTES, - GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE, GST_SEEK_TYPE_SET, offset, - GST_SEEK_TYPE_NONE, -1); - - res = gst_pad_push_event (demux->sinkpad, event); - - if (res) - demux->offset = offset; - return res; -} - -/* - * Read AVI index when streaming - */ -static gboolean -gst_avi_demux_read_subindexes_push (GstAviDemux * avi) -{ - guint32 tag = 0, size; - GstBuffer *buf = NULL; - guint odml_stream; - - GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams); - - if (avi->odml_subidxs[avi->odml_subidx] != avi->offset) - return FALSE; - - if (!gst_avi_demux_peek_chunk (avi, &tag, &size)) - return TRUE; - - /* this is the ODML chunk we expect */ - odml_stream = avi->odml_stream; - - if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + odml_stream / 10, - '0' + odml_stream % 10)) && - (tag != GST_MAKE_FOURCC ('0' + odml_stream / 10, - '0' + odml_stream % 10, 'i', 'x'))) { - GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")", - GST_FOURCC_ARGS (tag)); - return FALSE; - } - - avi->offset += 8 + GST_ROUND_UP_2 (size); - /* flush chunk header so we get just the 'size' payload data */ - gst_adapter_flush (avi->adapter, 8); - buf = gst_adapter_take_buffer (avi->adapter, size); - - if (!gst_avi_demux_parse_subindex (avi, &avi->stream[odml_stream], buf)) - return FALSE; - - /* we parsed the index, go to next subindex */ - avi->odml_subidx++; - - if (avi->odml_subidxs[avi->odml_subidx] == GST_BUFFER_OFFSET_NONE) { - /* we reached the end of the indexes for this stream, move to the next - * stream to handle the first index */ - avi->odml_stream++; - avi->odml_subidx = 0; - - if (avi->odml_stream < avi->num_streams) { - /* there are more indexes */ - avi->odml_subidxs = avi->stream[avi->odml_stream].indexes; - } else { - /* we're done, get stream stats now */ - avi->have_index = gst_avi_demux_do_index_stats (avi); - - return TRUE; - } - } - - /* seek to next index */ - return perform_seek_to_offset (avi, avi->odml_subidxs[avi->odml_subidx]); -} - -/* - * Read AVI index - */ -static void -gst_avi_demux_read_subindexes_pull (GstAviDemux * avi) -{ - guint32 tag; - GstBuffer *buf; - gint i, n; - - GST_DEBUG_OBJECT (avi, "read subindexes for %d streams", avi->num_streams); - - for (n = 0; n < avi->num_streams; n++) { - GstAviStream *stream = &avi->stream[n]; - - if (stream->indexes == NULL) - continue; - - for (i = 0; stream->indexes[i] != GST_BUFFER_OFFSET_NONE; i++) { - if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), avi->sinkpad, - &stream->indexes[i], &tag, &buf) != GST_FLOW_OK) - continue; - else if ((tag != GST_MAKE_FOURCC ('i', 'x', '0' + stream->num / 10, - '0' + stream->num % 10)) && - (tag != GST_MAKE_FOURCC ('0' + stream->num / 10, - '0' + stream->num % 10, 'i', 'x'))) { - /* Some ODML files (created by god knows what muxer) have a ##ix format - * instead of the 'official' ix##. They are still valid though. */ - GST_WARNING_OBJECT (avi, "Not an ix## chunk (%" GST_FOURCC_FORMAT ")", - GST_FOURCC_ARGS (tag)); - gst_buffer_unref (buf); - continue; - } - - if (!gst_avi_demux_parse_subindex (avi, stream, buf)) - continue; - } - - g_free (stream->indexes); - stream->indexes = NULL; - } - /* get stream stats now */ - avi->have_index = gst_avi_demux_do_index_stats (avi); -} - -/* - * gst_avi_demux_riff_parse_vprp: - * @element: caller element (used for debugging/error). - * @buf: input data to be used for parsing, stripped from header. - * @vprp: a pointer (returned by this function) to a filled-in vprp - * structure. Caller should free it. - * - * Parses a video stream´s vprp. This function takes ownership of @buf. - * - * Returns: TRUE if parsing succeeded, otherwise FALSE. The stream - * should be skipped on error, but it is not fatal. - */ -static gboolean -gst_avi_demux_riff_parse_vprp (GstElement * element, - GstBuffer * buf, gst_riff_vprp ** _vprp) -{ - gst_riff_vprp *vprp; - gint k; - - g_return_val_if_fail (buf != NULL, FALSE); - g_return_val_if_fail (_vprp != NULL, FALSE); - - if (GST_BUFFER_SIZE (buf) < G_STRUCT_OFFSET (gst_riff_vprp, field_info)) - goto too_small; - - vprp = g_memdup (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); - -#if (G_BYTE_ORDER == G_BIG_ENDIAN) - vprp->format_token = GUINT32_FROM_LE (vprp->format_token); - vprp->standard = GUINT32_FROM_LE (vprp->standard); - vprp->vert_rate = GUINT32_FROM_LE (vprp->vert_rate); - vprp->hor_t_total = GUINT32_FROM_LE (vprp->hor_t_total); - vprp->vert_lines = GUINT32_FROM_LE (vprp->vert_lines); - vprp->aspect = GUINT32_FROM_LE (vprp->aspect); - vprp->width = GUINT32_FROM_LE (vprp->width); - vprp->height = GUINT32_FROM_LE (vprp->height); - vprp->fields = GUINT32_FROM_LE (vprp->fields); -#endif - - /* size checking */ - /* calculate fields based on size */ - k = (GST_BUFFER_SIZE (buf) - G_STRUCT_OFFSET (gst_riff_vprp, field_info)) / - vprp->fields; - if (vprp->fields > k) { - GST_WARNING_OBJECT (element, - "vprp header indicated %d fields, only %d available", vprp->fields, k); - vprp->fields = k; - } - if (vprp->fields > GST_RIFF_VPRP_VIDEO_FIELDS) { - GST_WARNING_OBJECT (element, - "vprp header indicated %d fields, at most %d supported", vprp->fields, - GST_RIFF_VPRP_VIDEO_FIELDS); - vprp->fields = GST_RIFF_VPRP_VIDEO_FIELDS; - } -#if (G_BYTE_ORDER == G_BIG_ENDIAN) - for (k = 0; k < vprp->fields; k++) { - gst_riff_vprp_video_field_desc *fd; - - fd = &vprp->field_info[k]; - fd->compressed_bm_height = GUINT32_FROM_LE (fd->compressed_bm_height); - fd->compressed_bm_width = GUINT32_FROM_LE (fd->compressed_bm_width); - fd->valid_bm_height = GUINT32_FROM_LE (fd->valid_bm_height); - fd->valid_bm_width = GUINT16_FROM_LE (fd->valid_bm_width); - fd->valid_bm_x_offset = GUINT16_FROM_LE (fd->valid_bm_x_offset); - fd->valid_bm_y_offset = GUINT32_FROM_LE (fd->valid_bm_y_offset); - fd->video_x_t_offset = GUINT32_FROM_LE (fd->video_x_t_offset); - fd->video_y_start = GUINT32_FROM_LE (fd->video_y_start); - } -#endif - - /* debug */ - GST_INFO_OBJECT (element, "vprp tag found in context vids:"); - GST_INFO_OBJECT (element, " format_token %d", vprp->format_token); - GST_INFO_OBJECT (element, " standard %d", vprp->standard); - GST_INFO_OBJECT (element, " vert_rate %d", vprp->vert_rate); - GST_INFO_OBJECT (element, " hor_t_total %d", vprp->hor_t_total); - GST_INFO_OBJECT (element, " vert_lines %d", vprp->vert_lines); - GST_INFO_OBJECT (element, " aspect %d:%d", vprp->aspect >> 16, - vprp->aspect & 0xffff); - GST_INFO_OBJECT (element, " width %d", vprp->width); - GST_INFO_OBJECT (element, " height %d", vprp->height); - GST_INFO_OBJECT (element, " fields %d", vprp->fields); - for (k = 0; k < vprp->fields; k++) { - gst_riff_vprp_video_field_desc *fd; - - fd = &(vprp->field_info[k]); - GST_INFO_OBJECT (element, " field %u description:", k); - GST_INFO_OBJECT (element, " compressed_bm_height %d", - fd->compressed_bm_height); - GST_INFO_OBJECT (element, " compressed_bm_width %d", - fd->compressed_bm_width); - GST_INFO_OBJECT (element, " valid_bm_height %d", - fd->valid_bm_height); - GST_INFO_OBJECT (element, " valid_bm_width %d", fd->valid_bm_width); - GST_INFO_OBJECT (element, " valid_bm_x_offset %d", - fd->valid_bm_x_offset); - GST_INFO_OBJECT (element, " valid_bm_y_offset %d", - fd->valid_bm_y_offset); - GST_INFO_OBJECT (element, " video_x_t_offset %d", - fd->video_x_t_offset); - GST_INFO_OBJECT (element, " video_y_start %d", fd->video_y_start); - } - - gst_buffer_unref (buf); - - *_vprp = vprp; - - return TRUE; - - /* ERRORS */ -too_small: - { - GST_ERROR_OBJECT (element, - "Too small vprp (%d available, at least %d needed)", - GST_BUFFER_SIZE (buf), - (int) G_STRUCT_OFFSET (gst_riff_vprp, field_info)); - gst_buffer_unref (buf); - return FALSE; - } -} - -static void -gst_avi_demux_expose_streams (GstAviDemux * avi, gboolean force) -{ - guint i; - - GST_DEBUG_OBJECT (avi, "force : %d", force); - - for (i = 0; i < avi->num_streams; i++) { - GstAviStream *stream = &avi->stream[i]; - - if (force || stream->idx_n != 0) { - GST_LOG_OBJECT (avi, "Added pad %s with caps %" GST_PTR_FORMAT, - GST_PAD_NAME (stream->pad), GST_PAD_CAPS (stream->pad)); - gst_element_add_pad ((GstElement *) avi, stream->pad); - - if (avi->element_index) - gst_index_get_writer_id (avi->element_index, - GST_OBJECT_CAST (stream->pad), &stream->index_id); - - stream->exposed = TRUE; - if (avi->main_stream == -1) - avi->main_stream = i; - } else { - GST_WARNING_OBJECT (avi, "Stream #%d doesn't have any entry, removing it", - i); - gst_avi_demux_reset_stream (avi, stream); - } - } -} - - -#ifdef DIVX_DRM -typedef struct _gst_riff_strd { - guint32 version; - guint32 drm_size; -} gst_riff_strd; - - -static gboolean -gst_riff_parse_strd (GstAviDemux * avi, - GstBuffer * buf) -{ - g_return_val_if_fail (buf != NULL, FALSE); - - if (GST_BUFFER_SIZE (buf) < sizeof (gst_riff_strd)) - goto too_small; - - GST_DEBUG_OBJECT (avi, " version %d", ((gst_riff_strd*)GST_BUFFER_DATA(buf))->version); - GST_DEBUG_OBJECT (avi, " drm_size %d", ((gst_riff_strd*)GST_BUFFER_DATA(buf))->drm_size); - - if(avi->playback_protected) { - gst_buffer_unref (buf); - GST_ERROR_OBJECT (avi, "Trusted OPL violation error"); - GST_ELEMENT_ERROR (avi, STREAM, DECRYPT_NOKEY, ("Trusted opl violation error"), (NULL)); - return FALSE; - } - - return gst_avi_demux_init_divx_drm (avi, GST_BUFFER_DATA(buf)+sizeof(gst_riff_strd)); - - /* ERRORS */ -too_small: - { - GST_ERROR_OBJECT (avi, - "Too small strh (%d available, %d needed)", - GST_BUFFER_SIZE (buf), (int) sizeof (gst_riff_strd)); - gst_buffer_unref (buf); - return FALSE; - } -} -#endif // DIVX_DRM - - -/* buf contains LIST chunk data, and will be padded to even size, - * since some buggy files do not account for the padding of chunks - * within a LIST in the size of the LIST */ -static inline void -gst_avi_demux_roundup_list (GstAviDemux * avi, GstBuffer ** buf) -{ - gint size = GST_BUFFER_SIZE (*buf); - - if (G_UNLIKELY (size & 1)) { - GstBuffer *obuf; - - GST_DEBUG_OBJECT (avi, "rounding up dubious list size %d", size); - obuf = gst_buffer_new_and_alloc (size + 1); - memcpy (GST_BUFFER_DATA (obuf), GST_BUFFER_DATA (*buf), size); - /* assume 0 padding, at least makes outcome deterministic */ - (GST_BUFFER_DATA (obuf))[size] = 0; - gst_buffer_replace (buf, obuf); - } -} - -/* - * gst_avi_demux_parse_stream: - * @avi: calling element (used for debugging/errors). - * @buf: input buffer used to parse the stream. - * - * Parses all subchunks in a strl chunk (which defines a single - * stream). Discards the buffer after use. This function will - * increment the stream counter internally. - * - * Returns: whether the stream was identified successfully. - * Errors are not fatal. It does indicate the stream - * was skipped. - */ -static gboolean -gst_avi_demux_parse_stream (GstAviDemux * avi, GstBuffer * buf) -{ - GstAviStream *stream; - GstElementClass *klass; - GstPadTemplate *templ; - GstBuffer *sub = NULL; - guint offset = 4; - guint32 tag = 0; - gchar *codec_name = NULL, *padname = NULL; - const gchar *tag_name; - GstCaps *caps = NULL; - GstPad *pad; - GstElement *element; - gboolean got_strh = FALSE, got_strf = FALSE, got_vprp = FALSE; - gst_riff_vprp *vprp = NULL; - - element = GST_ELEMENT_CAST (avi); - - GST_DEBUG_OBJECT (avi, "Parsing stream"); - - gst_avi_demux_roundup_list (avi, &buf); - - if (avi->num_streams >= GST_AVI_DEMUX_MAX_STREAMS) { - GST_WARNING_OBJECT (avi, - "maximum no of streams (%d) exceeded, ignoring stream", - GST_AVI_DEMUX_MAX_STREAMS); - gst_buffer_unref (buf); - /* not a fatal error, let's say */ - return TRUE; - } - - stream = &avi->stream[avi->num_streams]; - - /* initial settings */ - stream->idx_duration = GST_CLOCK_TIME_NONE; - stream->hdr_duration = GST_CLOCK_TIME_NONE; - stream->duration = GST_CLOCK_TIME_NONE; - - while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) { - /* sub can be NULL if the chunk is empty */ - if (sub == NULL) { - GST_DEBUG_OBJECT (avi, "ignoring empty chunk %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (tag)); - continue; - } - switch (tag) { - case GST_RIFF_TAG_strh: - { - gst_riff_strh *strh; - - if (got_strh) { - GST_WARNING_OBJECT (avi, "Ignoring additional strh chunk"); - break; - } - if (!gst_riff_parse_strh (element, sub, &stream->strh)) { - /* ownership given away */ - sub = NULL; - GST_WARNING_OBJECT (avi, "Failed to parse strh chunk"); - goto fail; - } - sub = NULL; - strh = stream->strh; - /* sanity check; stream header frame rate matches global header - * frame duration */ - if (stream->strh->type == GST_RIFF_FCC_vids) { - GstClockTime s_dur; - GstClockTime h_dur = avi->avih->us_frame * GST_USECOND; - - s_dur = gst_util_uint64_scale (GST_SECOND, strh->scale, strh->rate); - GST_DEBUG_OBJECT (avi, "verifying stream framerate %d/%d, " - "frame duration = %d ms", strh->rate, strh->scale, - (gint) (s_dur / GST_MSECOND)); - if (h_dur > (10 * GST_MSECOND) && (s_dur > 10 * h_dur)) { - strh->rate = GST_SECOND / GST_USECOND; - strh->scale = h_dur / GST_USECOND; - GST_DEBUG_OBJECT (avi, "correcting stream framerate to %d/%d", - strh->rate, strh->scale); - } - } - /* determine duration as indicated by header */ - stream->hdr_duration = gst_util_uint64_scale ((guint64) strh->length * - strh->scale, GST_SECOND, (guint64) strh->rate); - GST_INFO ("Stream duration according to header: %" GST_TIME_FORMAT, - GST_TIME_ARGS (stream->hdr_duration)); - if (stream->hdr_duration == 0) - stream->hdr_duration = GST_CLOCK_TIME_NONE; - - got_strh = TRUE; - break; - } - case GST_RIFF_TAG_strf: - { - gboolean res = FALSE; - - if (got_strf) { - GST_WARNING_OBJECT (avi, "Ignoring additional strf chunk"); - break; - } - if (!got_strh) { - GST_ERROR_OBJECT (avi, "Found strf chunk before strh chunk"); - goto fail; - } - switch (stream->strh->type) { - case GST_RIFF_FCC_vids: - stream->is_vbr = TRUE; - res = gst_riff_parse_strf_vids (element, sub, - &stream->strf.vids, &stream->extradata); - sub = NULL; - GST_DEBUG_OBJECT (element, "marking video as VBR, res %d", res); - break; - case GST_RIFF_FCC_auds: - res = - gst_riff_parse_strf_auds (element, sub, &stream->strf.auds, - &stream->extradata); - sub = NULL; - if (!res) - break; - stream->is_vbr = (stream->strh->samplesize == 0) - && stream->strh->scale > 1 - && stream->strf.auds->blockalign != 1; - GST_DEBUG_OBJECT (element, "marking audio as VBR:%d, res %d", - stream->is_vbr, res); - /* we need these or we have no way to come up with timestamps */ - if ((!stream->is_vbr && !stream->strf.auds->av_bps) || - (stream->is_vbr && (!stream->strh->scale || - !stream->strh->rate))) { - GST_WARNING_OBJECT (element, - "invalid audio header, ignoring stream"); - goto fail; - } - /* some more sanity checks */ - if (stream->is_vbr) { - if (stream->strf.auds->blockalign <= 4) { - /* that would mean (too) many frames per chunk, - * so not likely set as expected */ - GST_DEBUG_OBJECT (element, - "suspicious blockalign %d for VBR audio; " - "overriding to 1 frame per chunk", - stream->strf.auds->blockalign); - /* this should top any likely value */ - stream->strf.auds->blockalign = (1 << 12); - } - } - break; - case GST_RIFF_FCC_iavs: - stream->is_vbr = TRUE; - res = gst_riff_parse_strf_iavs (element, sub, - &stream->strf.iavs, &stream->extradata); - sub = NULL; - GST_DEBUG_OBJECT (element, "marking iavs as VBR, res %d", res); - break; - case GST_RIFF_FCC_txts: - /* nothing to parse here */ - stream->is_vbr = (stream->strh->samplesize == 0) - && (stream->strh->scale > 1); - res = TRUE; - break; - default: - GST_ERROR_OBJECT (avi, - "Don´t know how to handle stream type %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (stream->strh->type)); - break; - } - if (sub) { - gst_buffer_unref (sub); - sub = NULL; - } - if (!res) - goto fail; - got_strf = TRUE; - break; - } - case GST_RIFF_TAG_vprp: - { - if (got_vprp) { - GST_WARNING_OBJECT (avi, "Ignoring additional vprp chunk"); - break; - } - if (!got_strh) { - GST_ERROR_OBJECT (avi, "Found vprp chunk before strh chunk"); - goto fail; - } - if (!got_strf) { - GST_ERROR_OBJECT (avi, "Found vprp chunk before strf chunk"); - goto fail; - } - - if (!gst_avi_demux_riff_parse_vprp (element, sub, &vprp)) { - GST_WARNING_OBJECT (avi, "Failed to parse vprp chunk"); - /* not considered fatal */ - g_free (vprp); - vprp = NULL; - } else - got_vprp = TRUE; - sub = NULL; - break; - } - case GST_RIFF_TAG_strd: -#ifdef DIVX_DRM - GST_DEBUG_OBJECT (avi, "******************* strd tag found:"); - if (gst_riff_parse_strd (avi, sub) == FALSE) { - GST_ELEMENT_ERROR(avi, STREAM, DECRYPT, - ("DivX initialization failed"), - ("gst_avi_demux_init_divx_drm() failed") ); - return FALSE; - } -#endif - - if (stream->initdata) - gst_buffer_unref (stream->initdata); - stream->initdata = sub; - sub = NULL; - break; - case GST_RIFF_TAG_strn: - g_free (stream->name); - if (sub != NULL) { - stream->name = - g_strndup ((gchar *) GST_BUFFER_DATA (sub), - (gsize) GST_BUFFER_SIZE (sub)); - gst_buffer_unref (sub); - sub = NULL; - } else { - stream->name = g_strdup (""); - } - GST_DEBUG_OBJECT (avi, "stream name: %s", stream->name); - break; - case GST_RIFF_IDIT: - gst_avi_demux_parse_idit (avi, sub); - break; - default: - if (tag == GST_MAKE_FOURCC ('i', 'n', 'd', 'x') || - tag == GST_MAKE_FOURCC ('i', 'x', '0' + avi->num_streams / 10, - '0' + avi->num_streams % 10)) { - g_free (stream->indexes); - gst_avi_demux_parse_superindex (avi, sub, &stream->indexes); - stream->superindex = TRUE; - sub = NULL; - break; - } - GST_WARNING_OBJECT (avi, - "Unknown stream header tag %" GST_FOURCC_FORMAT ", ignoring", - GST_FOURCC_ARGS (tag)); - /* fall-through */ - case GST_RIFF_TAG_JUNQ: - case GST_RIFF_TAG_JUNK: - break; - } - if (sub != NULL) { - gst_buffer_unref (sub); - sub = NULL; - } - } - - if (!got_strh) { - GST_WARNING_OBJECT (avi, "Failed to find strh chunk"); - goto fail; - } - - if (!got_strf) { - GST_WARNING_OBJECT (avi, "Failed to find strf chunk"); - goto fail; - } - - /* get class to figure out the template */ - klass = GST_ELEMENT_GET_CLASS (avi); - - /* we now have all info, let´s set up a pad and a caps and be done */ - /* create stream name + pad */ - switch (stream->strh->type) { - case GST_RIFF_FCC_vids:{ - guint32 fourcc; - - fourcc = (stream->strf.vids->compression) ? - stream->strf.vids->compression : stream->strh->fcc_handler; - padname = g_strdup_printf ("video_%02d", avi->num_v_streams); - templ = gst_element_class_get_pad_template (klass, "video_%02d"); - caps = gst_riff_create_video_caps (fourcc, stream->strh, - stream->strf.vids, stream->extradata, stream->initdata, &codec_name); - if (!caps) { - caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc", - GST_TYPE_FOURCC, fourcc, NULL); - } else if (got_vprp && vprp) { - guint32 aspect_n, aspect_d; - gint n, d; - - aspect_n = vprp->aspect >> 16; - aspect_d = vprp->aspect & 0xffff; - /* calculate the pixel aspect ratio using w/h and aspect ratio */ - n = aspect_n * stream->strf.vids->height; - d = aspect_d * stream->strf.vids->width; - if (n && d) - gst_caps_set_simple (caps, "pixel-aspect-ratio", GST_TYPE_FRACTION, - n, d, NULL); - /* very local, not needed elsewhere */ - g_free (vprp); - vprp = NULL; - } -#ifdef AVIDEMUX_MODIFICATION - gst_caps_set_simple (caps, "ts-linear", G_TYPE_BOOLEAN, TRUE, NULL); -#endif - tag_name = GST_TAG_VIDEO_CODEC; - avi->num_v_streams++; - break; - } - case GST_RIFF_FCC_auds:{ - padname = g_strdup_printf ("audio_%02d", avi->num_a_streams); - templ = gst_element_class_get_pad_template (klass, "audio_%02d"); - caps = gst_riff_create_audio_caps (stream->strf.auds->format, - stream->strh, stream->strf.auds, stream->extradata, - stream->initdata, &codec_name); - if (!caps) { - caps = gst_caps_new_simple ("audio/x-avi-unknown", "codec_id", - G_TYPE_INT, stream->strf.auds->format, NULL); - } - tag_name = GST_TAG_AUDIO_CODEC; - avi->num_a_streams++; - break; - } - case GST_RIFF_FCC_iavs:{ - guint32 fourcc = stream->strh->fcc_handler; - - padname = g_strdup_printf ("video_%02d", avi->num_v_streams); - templ = gst_element_class_get_pad_template (klass, "video_%02d"); - caps = gst_riff_create_iavs_caps (fourcc, stream->strh, - stream->strf.iavs, stream->extradata, stream->initdata, &codec_name); - if (!caps) { - caps = gst_caps_new_simple ("video/x-avi-unknown", "fourcc", - GST_TYPE_FOURCC, fourcc, NULL); - } - tag_name = GST_TAG_VIDEO_CODEC; - avi->num_v_streams++; - break; - } - case GST_RIFF_FCC_txts:{ - padname = g_strdup_printf ("subtitle_%02d", avi->num_t_streams); - templ = gst_element_class_get_pad_template (klass, "subtitle_%02d"); - caps = gst_caps_new_simple ("application/x-subtitle-avi", NULL); - tag_name = NULL; - avi->num_t_streams++; - break; - } - default: - g_return_val_if_reached (FALSE); - } - - /* no caps means no stream */ - if (!caps) { - GST_ERROR_OBJECT (element, "Did not find caps for stream %s", padname); - goto fail; - } - - GST_DEBUG_OBJECT (element, "codec-name=%s", - (codec_name ? codec_name : "NULL")); - GST_DEBUG_OBJECT (element, "caps=%" GST_PTR_FORMAT, caps); - - /* set proper settings and add it */ - if (stream->pad) - gst_object_unref (stream->pad); - pad = stream->pad = gst_pad_new_from_template (templ, padname); - g_free (padname); - - gst_pad_use_fixed_caps (pad); -#if 0 - gst_pad_set_formats_function (pad, - GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_formats)); - gst_pad_set_event_mask_function (pad, - GST_DEBUG_FUNCPTR (gst_avi_demux_get_event_mask)); -#endif - gst_pad_set_event_function (pad, - GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_event)); - gst_pad_set_query_type_function (pad, - GST_DEBUG_FUNCPTR (gst_avi_demux_get_src_query_types)); - gst_pad_set_query_function (pad, - GST_DEBUG_FUNCPTR (gst_avi_demux_handle_src_query)); -#if 0 - gst_pad_set_convert_function (pad, - GST_DEBUG_FUNCPTR (gst_avi_demux_src_convert)); -#endif - - stream->num = avi->num_streams; - - stream->start_entry = 0; - stream->step_entry = 0; - stream->stop_entry = 0; - - stream->current_entry = -1; - stream->current_total = 0; - - stream->last_flow = GST_FLOW_OK; - stream->discont = TRUE; - - stream->total_bytes = 0; - stream->total_blocks = 0; - stream->n_keyframes = 0; - - stream->idx_n = 0; - stream->idx_max = 0; - stream->sent_eos = FALSE; - - gst_pad_set_element_private (pad, stream); - avi->num_streams++; - -#ifdef AVIDEMUX_MODIFICATION - stream->trickplay_info = g_new0 (TrickPlayInfo, 1); - stream->trickplay_info->prev_kidx = 0; - stream->trickplay_info->next_kidx = 0; - stream->trickplay_info->kidxs_dur_diff = 0; -#endif - gst_pad_set_caps (pad, caps); - gst_pad_set_active (pad, TRUE); - gst_caps_unref (caps); - - /* make tags */ - if (codec_name) { - if (!stream->taglist) - stream->taglist = gst_tag_list_new (); - - avi->got_tags = TRUE; - - gst_tag_list_add (stream->taglist, GST_TAG_MERGE_APPEND, tag_name, - codec_name, NULL); - g_free (codec_name); - } - - gst_buffer_unref (buf); - - return TRUE; - - /* ERRORS */ -fail: - { - /* unref any mem that may be in use */ - gst_buffer_unref (buf); - if (sub) - gst_buffer_unref (sub); - g_free (vprp); - g_free (codec_name); - gst_avi_demux_reset_stream (avi, stream); - avi->num_streams++; - return FALSE; - } -} - -/* - * gst_avi_demux_parse_odml: - * @avi: calling element (used for debug/error). - * @buf: input buffer to be used for parsing. - * - * Read an openDML-2.0 extension header. Fills in the frame number - * in the avi demuxer object when reading succeeds. - */ -static void -gst_avi_demux_parse_odml (GstAviDemux * avi, GstBuffer * buf) -{ - guint32 tag = 0; - guint offset = 4; - GstBuffer *sub = NULL; - - while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag, - &sub)) { - switch (tag) { - case GST_RIFF_TAG_dmlh:{ - gst_riff_dmlh dmlh, *_dmlh; - guint size; - - /* sub == NULL is possible and means an empty buffer */ - size = sub ? GST_BUFFER_SIZE (sub) : 0; - - /* check size */ - if (size < sizeof (gst_riff_dmlh)) { - GST_ERROR_OBJECT (avi, - "DMLH entry is too small (%d bytes, %d needed)", - size, (int) sizeof (gst_riff_dmlh)); - goto next; - } - _dmlh = (gst_riff_dmlh *) GST_BUFFER_DATA (sub); - dmlh.totalframes = GST_READ_UINT32_LE (&_dmlh->totalframes); - - GST_INFO_OBJECT (avi, "dmlh tag found: totalframes: %u", - dmlh.totalframes); - - avi->avih->tot_frames = dmlh.totalframes; - goto next; - } - - default: - GST_WARNING_OBJECT (avi, - "Unknown tag %" GST_FOURCC_FORMAT " in ODML header", - GST_FOURCC_ARGS (tag)); - /* fall-through */ - case GST_RIFF_TAG_JUNQ: - case GST_RIFF_TAG_JUNK: - next: - /* skip and move to next chunk */ - if (sub) { - gst_buffer_unref (sub); - sub = NULL; - } - break; - } - } - if (buf) - gst_buffer_unref (buf); -} - -/* Index helper */ -static guint -gst_avi_demux_index_last (GstAviDemux * avi, GstAviStream * stream) -{ - return stream->idx_n; -} - -/* find a previous entry in the index with the given flags */ -static guint -gst_avi_demux_index_prev (GstAviDemux * avi, GstAviStream * stream, - guint last, gboolean keyframe) -{ - GstAviIndexEntry *entry; - guint i; - - for (i = last; i > 0; i--) { - entry = &stream->index[i - 1]; - if (!keyframe || ENTRY_IS_KEYFRAME (entry)) { - return i - 1; - } - } - return 0; -} - -static guint -gst_avi_demux_index_next (GstAviDemux * avi, GstAviStream * stream, - guint last, gboolean keyframe) -{ - GstAviIndexEntry *entry; - gint i; - - for (i = last + 1; i < stream->idx_n; i++) { - entry = &stream->index[i]; - if (!keyframe || ENTRY_IS_KEYFRAME (entry)) { - return i; - } - } - return stream->idx_n - 1; -} - -static guint -gst_avi_demux_index_entry_search (GstAviIndexEntry * entry, guint64 * total) -{ - if (entry->total < *total) - return -1; - else if (entry->total > *total) - return 1; - return 0; -} - -/* - * gst_avi_demux_index_for_time: - * @avi: Avi object - * @stream: the stream - * @time: a time position - * - * Finds the index entry which time is less or equal than the requested time. - * Try to avoid binary search when we can convert the time to an index - * position directly (for example for video frames with a fixed duration). - * - * Returns: the found position in the index. - */ -static guint -gst_avi_demux_index_for_time (GstAviDemux * avi, - GstAviStream * stream, guint64 time) -{ - guint index = -1; - guint64 total = 0; - - GST_LOG_OBJECT (avi, "search time:%" GST_TIME_FORMAT, GST_TIME_ARGS (time)); - - /* easy (and common) cases */ - if (time == 0 || stream->idx_n == 0) - return 0; - if (time >= stream->idx_duration) - return stream->idx_n - 1; - - /* figure out where we need to go. For that we convert the time to an - * index entry or we convert it to a total and then do a binary search. */ - if (stream->is_vbr) { - /* VBR stream next timestamp */ - if (stream->strh->type == GST_RIFF_FCC_auds) { - total = avi_stream_convert_time_to_frames_unchecked (stream, time); - } else { - index = avi_stream_convert_time_to_frames_unchecked (stream, time); - } - } else { - /* constant rate stream */ - total = avi_stream_convert_time_to_bytes_unchecked (stream, time); - } - - if (index == -1) { - GstAviIndexEntry *entry; - - /* no index, find index with binary search on total */ - GST_LOG_OBJECT (avi, "binary search for entry with total %" - G_GUINT64_FORMAT, total); - - entry = gst_util_array_binary_search (stream->index, - stream->idx_n, sizeof (GstAviIndexEntry), - (GCompareDataFunc) gst_avi_demux_index_entry_search, - GST_SEARCH_MODE_BEFORE, &total, NULL); - - if (entry == NULL) { - GST_LOG_OBJECT (avi, "not found, assume index 0"); - index = 0; - } else { - index = entry - stream->index; - GST_LOG_OBJECT (avi, "found at %u", index); - } - } else { - GST_LOG_OBJECT (avi, "converted time to index %u", index); - } - - return index; -} - -static inline GstAviStream * -gst_avi_demux_stream_for_id (GstAviDemux * avi, guint32 id) -{ - guint stream_nr; - GstAviStream *stream; - - /* get the stream for this entry */ - stream_nr = CHUNKID_TO_STREAMNR (id); - if (G_UNLIKELY (stream_nr >= avi->num_streams)) { - GST_WARNING_OBJECT (avi, "invalid stream nr %d", stream_nr); - return NULL; - } - stream = &avi->stream[stream_nr]; - if (G_UNLIKELY (!stream->strh)) { - GST_WARNING_OBJECT (avi, "Unhandled stream %d, skipping", stream_nr); - return NULL; - } - return stream; -} - -/* - * gst_avi_demux_parse_index: - * @avi: calling element (used for debugging/errors). - * @buf: buffer containing the full index. - * - * Read index entries from the provided buffer. - * The buffer should contain a GST_RIFF_TAG_idx1 chunk. - */ -static gboolean -gst_avi_demux_parse_index (GstAviDemux * avi, GstBuffer * buf) -{ - guint8 *data; - guint size; - guint i, num, n; - gst_riff_index_entry *index; - GstClockTime stamp; - GstAviStream *stream; - GstAviIndexEntry entry = {0}; - guint32 id; - - if (!buf) - return FALSE; - - data = GST_BUFFER_DATA (buf); - size = GST_BUFFER_SIZE (buf); - - stamp = gst_util_get_timestamp (); - - /* see how many items in the index */ - num = size / sizeof (gst_riff_index_entry); - if (num == 0) - goto empty_list; - - GST_INFO_OBJECT (avi, "Parsing index, nr_entries = %6d", num); - - index = (gst_riff_index_entry *) data; - - /* figure out if the index is 0 based or relative to the MOVI start */ - entry.offset = GST_READ_UINT32_LE (&index[0].offset); - if (entry.offset < avi->offset) { - avi->index_offset = avi->offset + 8; - GST_DEBUG ("index_offset = %" G_GUINT64_FORMAT, avi->index_offset); - } else { - avi->index_offset = 0; - GST_DEBUG ("index is 0 based"); - } - - for (i = 0, n = 0; i < num; i++) { - id = GST_READ_UINT32_LE (&index[i].id); - entry.offset = GST_READ_UINT32_LE (&index[i].offset); - - /* some sanity checks */ - if (G_UNLIKELY (id == GST_RIFF_rec || id == 0 || - (entry.offset == 0 && n > 0))) - continue; - -#ifdef DIVX_DRM /* need to check using same define */ - if ( id == GST_MAKE_FOURCC('0','0','d','d') ) - { - GST_DEBUG("Skipping Encrypt data chunk"); - continue; - } -#endif - - /* get the stream for this entry */ - stream = gst_avi_demux_stream_for_id (avi, id); - if (G_UNLIKELY (!stream)) - continue; - - /* handle offset and size */ - entry.offset += avi->index_offset + 8; - entry.size = GST_READ_UINT32_LE (&index[i].size); - - /* handle flags */ - if (stream->strh->type == GST_RIFF_FCC_auds) { - /* all audio frames are keyframes */ - ENTRY_SET_KEYFRAME (&entry); - } else { - guint32 flags; - /* else read flags */ - flags = GST_READ_UINT32_LE (&index[i].flags); - if (flags & GST_RIFF_IF_KEYFRAME) { - ENTRY_SET_KEYFRAME (&entry); - } else { - ENTRY_UNSET_KEYFRAME (&entry); - } - } - - /* and add */ - if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry))) - goto out_of_mem; - - n++; - } - gst_buffer_unref (buf); - - /* get stream stats now */ - avi->have_index = gst_avi_demux_do_index_stats (avi); - - stamp = gst_util_get_timestamp () - stamp; - GST_DEBUG_OBJECT (avi, "index parsing took %" GST_TIME_FORMAT, - GST_TIME_ARGS (stamp)); - - return TRUE; - - /* ERRORS */ -empty_list: - { - GST_DEBUG_OBJECT (avi, "empty index"); - gst_buffer_unref (buf); - return FALSE; - } -out_of_mem: - { - GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL), - ("Cannot allocate memory for %u*%u=%u bytes", - (guint) sizeof (GstAviIndexEntry), num, - (guint) sizeof (GstAviIndexEntry) * num)); - gst_buffer_unref (buf); - return FALSE; - } -} - -/* - * gst_avi_demux_stream_index: - * @avi: avi demuxer object. - * - * Seeks to index and reads it. - */ -static void -gst_avi_demux_stream_index (GstAviDemux * avi) -{ - GstFlowReturn res; - guint64 offset = avi->offset; - GstBuffer *buf; - guint32 tag; - guint32 size; - - GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset); - - /* get chunk information */ - res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf); - if (res != GST_FLOW_OK) - goto pull_failed; - else if (GST_BUFFER_SIZE (buf) < 8) - goto too_small; - - /* check tag first before blindy trying to read 'size' bytes */ - tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)); - size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4); - if (tag == GST_RIFF_TAG_LIST) { - /* this is the movi tag */ - GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT, - (8 + GST_ROUND_UP_2 (size))); - offset += 8 + GST_ROUND_UP_2 (size); - gst_buffer_unref (buf); - res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf); - if (res != GST_FLOW_OK) - goto pull_failed; - else if (GST_BUFFER_SIZE (buf) < 8) - goto too_small; - tag = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)); - size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buf) + 4); - } - - if (tag != GST_RIFF_TAG_idx1) - goto no_index; - if (!size) - goto zero_index; - - gst_buffer_unref (buf); - - GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset); - - /* read chunk, advance offset */ - if (gst_riff_read_chunk (GST_ELEMENT_CAST (avi), - avi->sinkpad, &offset, &tag, &buf) != GST_FLOW_OK) - return; - - GST_DEBUG ("will parse index chunk size %u for tag %" - GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag)); - - gst_avi_demux_parse_index (avi, buf); - -#ifndef GST_DISABLE_GST_DEBUG - /* debug our indexes */ - { - gint i; - GstAviStream *stream; - - for (i = 0; i < avi->num_streams; i++) { - stream = &avi->stream[i]; - GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes", - i, stream->idx_n, stream->total_bytes); - } - } -#endif - return; - - /* ERRORS */ -pull_failed: - { - GST_DEBUG_OBJECT (avi, - "pull range failed: pos=%" G_GUINT64_FORMAT " size=8", offset); - return; - } -too_small: - { - GST_DEBUG_OBJECT (avi, "Buffer is too small"); - gst_buffer_unref (buf); - return; - } -no_index: - { - GST_WARNING_OBJECT (avi, - "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (tag)); - gst_buffer_unref (buf); - return; - } -zero_index: - { - GST_WARNING_OBJECT (avi, "Empty index data (idx1) after movi chunk"); - gst_buffer_unref (buf); - return; - } -} - -/* - * gst_avi_demux_stream_index_push: - * @avi: avi demuxer object. - * - * Read index. - */ -static void -gst_avi_demux_stream_index_push (GstAviDemux * avi) -{ - guint64 offset = avi->idx1_offset; - GstBuffer *buf; - guint32 tag; - guint32 size; - - GST_DEBUG ("demux stream index at offset %" G_GUINT64_FORMAT, offset); - - /* get chunk information */ - if (!gst_avi_demux_peek_chunk (avi, &tag, &size)) - return; - - /* check tag first before blindly trying to read 'size' bytes */ - if (tag == GST_RIFF_TAG_LIST) { - /* this is the movi tag */ - GST_DEBUG_OBJECT (avi, "skip LIST chunk, size %" G_GUINT32_FORMAT, - (8 + GST_ROUND_UP_2 (size))); - avi->idx1_offset = offset + 8 + GST_ROUND_UP_2 (size); - /* issue seek to allow chain function to handle it and return! */ - perform_seek_to_offset (avi, avi->idx1_offset); - return; - } - - if (tag != GST_RIFF_TAG_idx1) - goto no_index; - - GST_DEBUG ("index found at offset %" G_GUINT64_FORMAT, offset); - - /* flush chunk header */ - gst_adapter_flush (avi->adapter, 8); - /* read chunk payload */ - buf = gst_adapter_take_buffer (avi->adapter, size); - if (!buf) - goto pull_failed; - /* advance offset */ - offset += 8 + GST_ROUND_UP_2 (size); - - GST_DEBUG ("will parse index chunk size %u for tag %" - GST_FOURCC_FORMAT, GST_BUFFER_SIZE (buf), GST_FOURCC_ARGS (tag)); - - avi->offset = avi->first_movi_offset; - gst_avi_demux_parse_index (avi, buf); - -#ifndef GST_DISABLE_GST_DEBUG - /* debug our indexes */ - { - gint i; - GstAviStream *stream; - - for (i = 0; i < avi->num_streams; i++) { - stream = &avi->stream[i]; - GST_DEBUG_OBJECT (avi, "stream %u: %u frames, %" G_GINT64_FORMAT " bytes", - i, stream->idx_n, stream->total_bytes); - } - } -#endif - return; - - /* ERRORS */ -pull_failed: - { - GST_DEBUG_OBJECT (avi, - "taking data from adapter failed: pos=%" G_GUINT64_FORMAT " size=%u", - offset, size); - return; - } -no_index: - { - GST_WARNING_OBJECT (avi, - "No index data (idx1) after movi chunk, but %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (tag)); - return; - } -} - -/* - * gst_avi_demux_peek_tag: - * - * Returns the tag and size of the next chunk - */ -static GstFlowReturn -gst_avi_demux_peek_tag (GstAviDemux * avi, guint64 offset, guint32 * tag, - guint * size) -{ - GstFlowReturn res = GST_FLOW_OK; - GstBuffer *buf = NULL; - guint bufsize; - guint8 *bufdata; - - res = gst_pad_pull_range (avi->sinkpad, offset, 8, &buf); - if (res != GST_FLOW_OK) - goto pull_failed; - - bufsize = GST_BUFFER_SIZE (buf); - if (bufsize != 8) - goto wrong_size; - - bufdata = GST_BUFFER_DATA (buf); - - *tag = GST_READ_UINT32_LE (bufdata); - *size = GST_READ_UINT32_LE (bufdata + 4); - - GST_LOG_OBJECT (avi, "Tag[%" GST_FOURCC_FORMAT "] (size:%d) %" - G_GINT64_FORMAT " -- %" G_GINT64_FORMAT, GST_FOURCC_ARGS (*tag), - *size, offset + 8, offset + 8 + (gint64) * size); - -done: - gst_buffer_unref (buf); - - return res; - - /* ERRORS */ -pull_failed: - { - GST_DEBUG_OBJECT (avi, "pull_ranged returned %s", gst_flow_get_name (res)); - return res; - } -wrong_size: - { - GST_DEBUG_OBJECT (avi, "got %d bytes which is <> 8 bytes", bufsize); - res = GST_FLOW_ERROR; - goto done; - } -} - -/* - * gst_avi_demux_next_data_buffer: - * - * Returns the offset and size of the next buffer - * Position is the position of the buffer (after tag and size) - */ -static GstFlowReturn -gst_avi_demux_next_data_buffer (GstAviDemux * avi, guint64 * offset, - guint32 * tag, guint * size) -{ - guint64 off = *offset; - guint _size = 0; - GstFlowReturn res; - - do { - res = gst_avi_demux_peek_tag (avi, off, tag, &_size); - if (res != GST_FLOW_OK) - break; - if (*tag == GST_RIFF_TAG_LIST || *tag == GST_RIFF_TAG_RIFF) - off += 8 + 4; /* skip tag + size + subtag */ - else { - *offset = off + 8; - *size = _size; - break; - } - } while (TRUE); - - return res; -} - -/* - * gst_avi_demux_stream_scan: - * @avi: calling element (used for debugging/errors). - * - * Scan the file for all chunks to "create" a new index. - * pull-range based - */ -static gboolean -gst_avi_demux_stream_scan (GstAviDemux * avi) -{ - GstFlowReturn res; - GstAviStream *stream; - GstFormat format; - guint64 pos = 0; - guint64 length; - gint64 tmplength; - guint32 tag = 0; - guint num; - - /* FIXME: - * - implement non-seekable source support. - */ - GST_DEBUG_OBJECT (avi, "Creating index"); - - /* get the size of the file */ - format = GST_FORMAT_BYTES; - if (!gst_pad_query_peer_duration (avi->sinkpad, &format, &tmplength)) - return FALSE; - length = tmplength; - - /* guess the total amount of entries we expect */ - num = 16000; - - while (TRUE) { - GstAviIndexEntry entry; - guint size = 0; -#ifdef AVIDEMUX_MODIFICATION - gint frame_type = GST_AVI_KEYFRAME; -#endif - - /* start reading data buffers to find the id and offset */ - res = gst_avi_demux_next_data_buffer (avi, &pos, &tag, &size); - if (G_UNLIKELY (res != GST_FLOW_OK)) - break; - - /* get stream */ - stream = gst_avi_demux_stream_for_id (avi, tag); - if (G_UNLIKELY (!stream)) - goto next; -#ifdef AVIDEMUX_MODIFICATION - /* generating index table with key frames */ - if (stream->strh->type == GST_RIFF_FCC_vids) { - GstBuffer *buf = NULL; - int ret = -1; - - res = gst_pad_pull_range (avi->sinkpad, pos, size, &buf); - if (res != GST_FLOW_OK) { - gst_buffer_unref (buf); - GST_ERROR ("Pull failed....\n\n"); - break; - } - ret = gst_avi_demux_find_frame_type (stream, buf, &frame_type); - if (ret == -1) - break; - gst_buffer_unref (buf); - } - entry.flags = frame_type; -#else - /* we can't figure out the keyframes, assume they all are */ - entry.flags = GST_AVI_KEYFRAME; -#endif - entry.offset = pos; - entry.size = size; - - /* and add to the index of this stream */ - if (G_UNLIKELY (!gst_avi_demux_add_index (avi, stream, num, &entry))) - goto out_of_mem; - - next: - /* update position */ - pos += GST_ROUND_UP_2 (size); - if (G_UNLIKELY (pos > length)) { - GST_WARNING_OBJECT (avi, - "Stopping index lookup since we are further than EOF"); - break; - } - } - - /* collect stats */ - avi->have_index = gst_avi_demux_do_index_stats (avi); - - return TRUE; - - /* ERRORS */ -out_of_mem: - { - GST_ELEMENT_ERROR (avi, RESOURCE, NO_SPACE_LEFT, (NULL), - ("Cannot allocate memory for %u*%u=%u bytes", - (guint) sizeof (GstAviIndexEntry), num, - (guint) sizeof (GstAviIndexEntry) * num)); - return FALSE; - } -} - -static void -gst_avi_demux_calculate_durations_from_index (GstAviDemux * avi) -{ - guint i; - GstClockTime total; - GstAviStream *stream; - - total = GST_CLOCK_TIME_NONE; - - /* all streams start at a timestamp 0 */ - for (i = 0; i < avi->num_streams; i++) { - GstClockTime duration, hduration; - gst_riff_strh *strh; - - stream = &avi->stream[i]; - if (G_UNLIKELY (!stream || !stream->idx_n || !(strh = stream->strh))) - continue; - - /* get header duration for the stream */ - hduration = stream->hdr_duration; - /* index duration calculated during parsing */ - duration = stream->idx_duration; - - /* now pick a good duration */ - if (GST_CLOCK_TIME_IS_VALID (duration)) { - /* index gave valid duration, use that */ - GST_INFO ("Stream %p duration according to index: %" GST_TIME_FORMAT, - stream, GST_TIME_ARGS (duration)); - } else { - /* fall back to header info to calculate a duration */ - duration = hduration; - } - GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT, - i, GST_TIME_ARGS (duration)); - /* set duration for the stream */ - stream->duration = duration; - - /* find total duration */ - if (total == GST_CLOCK_TIME_NONE || - (GST_CLOCK_TIME_IS_VALID (duration) && duration > total)) - total = duration; - } - - if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) { - /* now update the duration for those streams where we had none */ - for (i = 0; i < avi->num_streams; i++) { - stream = &avi->stream[i]; - - if (!GST_CLOCK_TIME_IS_VALID (stream->duration) - || stream->duration == 0) { - stream->duration = total; - - GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT, - stream, GST_TIME_ARGS (total)); - } - } - } - - /* and set the total duration in the segment. */ - GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT, - GST_TIME_ARGS (total)); - - gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total); -} - -#ifdef AVIDEMUX_MODIFICATION -static void -gst_avi_demux_calculate_durations_from_strh (GstAviDemux * avi) -{ - guint i; - GstClockTime total; - GstAviStream *stream; - - total = GST_CLOCK_TIME_NONE; - - /* all streams start at a timestamp 0 */ - for (i = 0; i < avi->num_streams; i++) { - GstClockTime hduration; - gst_riff_strh *strh; - - stream = &avi->stream[i]; - - if (G_UNLIKELY (!stream || !(strh = stream->strh))) - continue; - - /* get header duration for the stream */ - hduration = stream->hdr_duration; - - /* check duration */ - if (GST_CLOCK_TIME_IS_VALID (hduration)) { - GST_INFO ("Stream %p duration according to strh: %" GST_TIME_FORMAT, - stream, GST_TIME_ARGS (hduration)); - } - - GST_INFO ("Setting duration of stream #%d to %" GST_TIME_FORMAT, - i, GST_TIME_ARGS (hduration)); - - /* set duration for the stream */ - stream->duration = hduration; - - /* find total duration */ - if (total == GST_CLOCK_TIME_NONE || - (GST_CLOCK_TIME_IS_VALID (hduration) && hduration > total)) - total = hduration; - } - - if (GST_CLOCK_TIME_IS_VALID (total) && (total > 0)) { - /* now update the duration for those streams where we had none */ - for (i = 0; i < avi->num_streams; i++) { - stream = &avi->stream[i]; - - if (!GST_CLOCK_TIME_IS_VALID (stream->duration) - || stream->duration == 0) { - stream->duration = total; - - GST_INFO ("Stream %p duration according to total: %" GST_TIME_FORMAT, - stream, GST_TIME_ARGS (total)); - } - } - } - - /* and set the total duration in the segment. */ - GST_INFO ("Setting total duration to: %" GST_TIME_FORMAT, - GST_TIME_ARGS (total)); - - gst_segment_set_duration (&avi->segment, GST_FORMAT_TIME, total); -} -#endif - -/* returns FALSE if there are no pads to deliver event to, - * otherwise TRUE (whatever the outcome of event sending), - * takes ownership of the event. */ -static gboolean -gst_avi_demux_push_event (GstAviDemux * avi, GstEvent * event) -{ - gboolean result = FALSE; - gint i; - GstEventType etype = GST_EVENT_TYPE (event); - - GST_DEBUG_OBJECT (avi, "sending %s event to %d streams", - GST_EVENT_TYPE_NAME (event), avi->num_streams); - - for (i = 0; i < avi->num_streams; i++) { - GstAviStream *stream = &avi->stream[i]; - - if (stream->pad) { - if (etype == GST_EVENT_EOS) { - /* let's not send twice */ - if (stream->sent_eos) { - result = TRUE; - continue; - } - GST_DEBUG_OBJECT(avi, "Sending EOS for stream %d", i); - stream->sent_eos = TRUE; - } - result = TRUE; - gst_pad_push_event (stream->pad, gst_event_ref (event)); - } - } - gst_event_unref (event); - return result; -} - -static void -gst_avi_demux_check_seekability (GstAviDemux * avi) -{ - GstQuery *query; - gboolean seekable = FALSE; - gint64 start = -1, stop = -1; - - query = gst_query_new_seeking (GST_FORMAT_BYTES); - if (!gst_pad_peer_query (avi->sinkpad, query)) { - GST_DEBUG_OBJECT (avi, "seeking query failed"); - goto done; - } - - gst_query_parse_seeking (query, NULL, &seekable, &start, &stop); - - /* try harder to query upstream size if we didn't get it the first time */ - if (seekable && stop == -1) { - GstFormat fmt = GST_FORMAT_BYTES; - - GST_DEBUG_OBJECT (avi, "doing duration query to fix up unset stop"); - gst_pad_query_peer_duration (avi->sinkpad, &fmt, &stop); - } - - /* if upstream doesn't know the size, it's likely that it's not seekable in - * practice even if it technically may be seekable */ - if (seekable && (start != 0 || stop <= start)) { - GST_DEBUG_OBJECT (avi, "seekable but unknown start/stop -> disable"); - seekable = FALSE; - } - -done: - GST_INFO_OBJECT (avi, "seekable: %d (%" G_GUINT64_FORMAT " - %" - G_GUINT64_FORMAT ")", seekable, start, stop); - avi->seekable = seekable; - - gst_query_unref (query); -} - -/* - * Read AVI headers when streaming - */ -static GstFlowReturn -gst_avi_demux_stream_header_push (GstAviDemux * avi) -{ - GstFlowReturn ret = GST_FLOW_OK; - guint32 tag = 0; - guint32 ltag = 0; - guint32 size = 0; - const guint8 *data; - GstBuffer *buf = NULL, *sub = NULL; - guint offset = 4; - gint64 stop; - gint i; - GstTagList *tags = NULL; - - GST_DEBUG ("Reading and parsing avi headers: %d", avi->header_state); - - switch (avi->header_state) { - case GST_AVI_DEMUX_HEADER_TAG_LIST: - if (gst_avi_demux_peek_chunk (avi, &tag, &size)) { - avi->offset += 8 + GST_ROUND_UP_2 (size); - if (tag != GST_RIFF_TAG_LIST) - goto header_no_list; - - gst_adapter_flush (avi->adapter, 8); - /* Find the 'hdrl' LIST tag */ - GST_DEBUG ("Reading %d bytes", size); - buf = gst_adapter_take_buffer (avi->adapter, size); - - if (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) - goto header_no_hdrl; - - /* mind padding */ - if (size & 1) - gst_adapter_flush (avi->adapter, 1); - - GST_DEBUG ("'hdrl' LIST tag found. Parsing next chunk"); - - gst_avi_demux_roundup_list (avi, &buf); - - /* the hdrl starts with a 'avih' header */ - if (!gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag, - &sub)) - goto header_no_avih; - - if (tag != GST_RIFF_TAG_avih) - goto header_no_avih; - - if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih)) - goto header_wrong_avih; - - GST_DEBUG_OBJECT (avi, "AVI header ok, reading elemnts from header"); - - /* now, read the elements from the header until the end */ - while (gst_riff_parse_chunk (GST_ELEMENT_CAST (avi), buf, &offset, &tag, - &sub)) { - /* sub can be NULL on empty tags */ - if (!sub) - continue; - - switch (tag) { - case GST_RIFF_TAG_LIST: - if (GST_BUFFER_SIZE (sub) < 4) - goto next; - - switch (GST_READ_UINT32_LE (GST_BUFFER_DATA (sub))) { - case GST_RIFF_LIST_strl: - if (!(gst_avi_demux_parse_stream (avi, sub))) { - sub = NULL; - GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL), - ("failed to parse stream, ignoring")); - goto next; - } - sub = NULL; - goto next; - case GST_RIFF_LIST_odml: - gst_avi_demux_parse_odml (avi, sub); - sub = NULL; - break; - default: - GST_WARNING_OBJECT (avi, - "Unknown list %" GST_FOURCC_FORMAT " in AVI header", - GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA - (sub)))); - /* fall-through */ - case GST_RIFF_TAG_JUNQ: - case GST_RIFF_TAG_JUNK: - goto next; - } - break; - case GST_RIFF_IDIT: - gst_avi_demux_parse_idit (avi, sub); - goto next; - default: - GST_WARNING_OBJECT (avi, - "Unknown off %d tag %" GST_FOURCC_FORMAT " in AVI header", - offset, GST_FOURCC_ARGS (tag)); - /* fall-through */ - case GST_RIFF_TAG_JUNQ: - case GST_RIFF_TAG_JUNK: - next: - /* move to next chunk */ - if (sub) - gst_buffer_unref (sub); - sub = NULL; - break; - } - } - gst_buffer_unref (buf); - GST_DEBUG ("elements parsed"); - - /* check parsed streams */ - if (avi->num_streams == 0) { - goto no_streams; - } else if (avi->num_streams != avi->avih->streams) { - GST_WARNING_OBJECT (avi, - "Stream header mentioned %d streams, but %d available", - avi->avih->streams, avi->num_streams); - } - GST_DEBUG ("Get junk and info next"); - avi->header_state = GST_AVI_DEMUX_HEADER_INFO; - } else { - /* Need more data */ - return ret; - } - /* fall-though */ - case GST_AVI_DEMUX_HEADER_INFO: - GST_DEBUG_OBJECT (avi, "skipping junk between header and data ..."); - while (TRUE) { - if (gst_adapter_available (avi->adapter) < 12) - return GST_FLOW_OK; - - data = gst_adapter_peek (avi->adapter, 12); - tag = GST_READ_UINT32_LE (data); - size = GST_READ_UINT32_LE (data + 4); - ltag = GST_READ_UINT32_LE (data + 8); - - if (tag == GST_RIFF_TAG_LIST) { - switch (ltag) { - case GST_RIFF_LIST_movi: - gst_adapter_flush (avi->adapter, 12); - if (!avi->first_movi_offset) - avi->first_movi_offset = avi->offset; - avi->offset += 12; - avi->idx1_offset = avi->offset + size - 4; - goto skipping_done; - case GST_RIFF_LIST_INFO: - GST_DEBUG ("Found INFO chunk"); - if (gst_avi_demux_peek_chunk (avi, &tag, &size)) { - GST_DEBUG ("got size %d", size); - avi->offset += 12; - gst_adapter_flush (avi->adapter, 12); - if (size > 4) { - buf = gst_adapter_take_buffer (avi->adapter, size - 4); - /* mind padding */ - if (size & 1) - gst_adapter_flush (avi->adapter, 1); - gst_riff_parse_info (GST_ELEMENT_CAST (avi), buf, &tags); - if (tags) { - if (avi->globaltags) { - gst_tag_list_insert (avi->globaltags, tags, - GST_TAG_MERGE_REPLACE); - } else { - avi->globaltags = tags; - } - } - tags = NULL; - gst_buffer_unref (buf); - - avi->offset += GST_ROUND_UP_2 (size) - 4; - } else { - GST_DEBUG ("skipping INFO LIST prefix"); - } - } else { - /* Need more data */ - return GST_FLOW_OK; - } - break; - default: - if (gst_avi_demux_peek_chunk (avi, &tag, &size)) { - avi->offset += 8 + GST_ROUND_UP_2 (size); - gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size)); - // ??? goto iterate; ??? - } else { - /* Need more data */ - return GST_FLOW_OK; - } - break; - } - } else { - if (gst_avi_demux_peek_chunk (avi, &tag, &size)) { - avi->offset += 8 + GST_ROUND_UP_2 (size); - gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size)); - //goto iterate; - } else { - /* Need more data */ - return GST_FLOW_OK; - } - } - } - break; - default: - GST_WARNING ("unhandled header state: %d", avi->header_state); - break; - } -skipping_done: - - GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)", - avi->num_streams, avi->stream[0].indexes); - - GST_DEBUG ("Found movi chunk. Starting to stream data"); - avi->state = GST_AVI_DEMUX_MOVI; - -#ifdef AVIDEMUX_MODIFICATION - /*no indexs in push mode, but it could be get from strh chunk */ - gst_avi_demux_calculate_durations_from_strh (avi); -#else - /* no indexes in push mode, but it still sets some variables */ - gst_avi_demux_calculate_durations_from_index (avi); -#endif - - gst_avi_demux_expose_streams (avi, TRUE); - - /* prepare all streams for index 0 */ - for (i = 0; i < avi->num_streams; i++) - avi->stream[i].current_entry = 0; - - /* create initial NEWSEGMENT event */ - if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE) - stop = avi->segment.duration; - - GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop); - - if (avi->seg_event) - gst_event_unref (avi->seg_event); - avi->seg_event = gst_event_new_new_segment_full - (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME, - avi->segment.start, stop, avi->segment.time); - - gst_avi_demux_check_seekability (avi); - - /* at this point we know all the streams and we can signal the no more - * pads signal */ - GST_DEBUG_OBJECT (avi, "signaling no more pads"); - gst_element_no_more_pads (GST_ELEMENT_CAST (avi)); - - return GST_FLOW_OK; - - /* ERRORS */ -no_streams: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found")); - return GST_FLOW_ERROR; - } -header_no_list: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Invalid AVI header (no LIST at start): %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag))); - return GST_FLOW_ERROR; - } -header_no_hdrl: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Invalid AVI header (no hdrl at start): %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag))); - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } -header_no_avih: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Invalid AVI header (no avih at start): %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag))); - if (sub) - gst_buffer_unref (sub); - - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } -header_wrong_avih: - { - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } -} - -static void -gst_avi_demux_add_date_tag (GstAviDemux * avi, gint y, gint m, gint d, - gint h, gint min, gint s) -{ - GDate *date; - GstDateTime *dt; - - date = g_date_new_dmy (d, m, y); - if (!g_date_valid (date)) { - /* bogus date */ - GST_WARNING_OBJECT (avi, "Refusing to add invalid date %d-%d-%d", y, m, d); - g_date_free (date); - return; - } - - dt = gst_date_time_new_local_time (y, m, d, h, min, s); - - if (avi->globaltags == NULL) - avi->globaltags = gst_tag_list_new (); - - gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE, date, - NULL); - g_date_free (date); - if (dt) { - gst_tag_list_add (avi->globaltags, GST_TAG_MERGE_REPLACE, GST_TAG_DATE_TIME, - dt, NULL); - gst_date_time_unref (dt); - } -} - -static void -gst_avi_demux_parse_idit_nums_only (GstAviDemux * avi, gchar * data) -{ - gint y, m, d; - gint hr = 0, min = 0, sec = 0; - gint ret; - - GST_DEBUG ("data : '%s'", data); - - ret = sscanf (data, "%d:%d:%d %d:%d:%d", &y, &m, &d, &hr, &min, &sec); - if (ret < 3) { - /* Attempt YYYY/MM/DD/ HH:MM variant (found in CASIO cameras) */ - ret = sscanf (data, "%04d/%02d/%02d/ %d:%d", &y, &m, &d, &hr, &min); - if (ret < 3) { - GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag"); - return; - } - } - gst_avi_demux_add_date_tag (avi, y, m, d, hr, min, sec); -} - -static gint -get_month_num (gchar * data, guint size) -{ - if (g_ascii_strncasecmp (data, "jan", 3) == 0) { - return 1; - } else if (g_ascii_strncasecmp (data, "feb", 3) == 0) { - return 2; - } else if (g_ascii_strncasecmp (data, "mar", 3) == 0) { - return 3; - } else if (g_ascii_strncasecmp (data, "apr", 3) == 0) { - return 4; - } else if (g_ascii_strncasecmp (data, "may", 3) == 0) { - return 5; - } else if (g_ascii_strncasecmp (data, "jun", 3) == 0) { - return 6; - } else if (g_ascii_strncasecmp (data, "jul", 3) == 0) { - return 7; - } else if (g_ascii_strncasecmp (data, "aug", 3) == 0) { - return 8; - } else if (g_ascii_strncasecmp (data, "sep", 3) == 0) { - return 9; - } else if (g_ascii_strncasecmp (data, "oct", 3) == 0) { - return 10; - } else if (g_ascii_strncasecmp (data, "nov", 3) == 0) { - return 11; - } else if (g_ascii_strncasecmp (data, "dec", 3) == 0) { - return 12; - } - - return 0; -} - -static void -gst_avi_demux_parse_idit_text (GstAviDemux * avi, gchar * data) -{ - gint year, month, day; - gint hour, min, sec; - gint ret; - gchar weekday[4]; - gchar monthstr[4]; - - ret = sscanf (data, "%3s %3s %d %d:%d:%d %d", weekday, monthstr, &day, &hour, - &min, &sec, &year); - if (ret != 7) { - GST_WARNING_OBJECT (avi, "Failed to parse IDIT tag"); - return; - } - month = get_month_num (monthstr, strlen (monthstr)); - gst_avi_demux_add_date_tag (avi, year, month, day, hour, min, sec); -} - -static void -gst_avi_demux_parse_idit (GstAviDemux * avi, GstBuffer * buf) -{ - gchar *data = (gchar *) GST_BUFFER_DATA (buf); - guint size = GST_BUFFER_SIZE (buf); - gchar *safedata = NULL; - - /* - * According to: - * http://www.eden-foundation.org/products/code/film_date_stamp/index.html - * - * This tag could be in one of the below formats - * 2005:08:17 11:42:43 - * THU OCT 26 16:46:04 2006 - * Mon Mar 3 09:44:56 2008 - * - * FIXME: Our date tag doesn't include hours - */ - - /* skip eventual initial whitespace */ - while (size > 0 && g_ascii_isspace (data[0])) { - data++; - size--; - } - - if (size == 0) { - goto non_parsable; - } - - /* make a safe copy to add a \0 to the end of the string */ - safedata = g_strndup (data, size); - - /* test if the first char is a alpha or a number */ - if (g_ascii_isdigit (data[0])) { - gst_avi_demux_parse_idit_nums_only (avi, safedata); - g_free (safedata); - return; - } else if (g_ascii_isalpha (data[0])) { - gst_avi_demux_parse_idit_text (avi, safedata); - g_free (safedata); - return; - } - - g_free (safedata); - -non_parsable: - GST_WARNING_OBJECT (avi, "IDIT tag has no parsable info"); -} - -/* - * Read full AVI headers. - */ -static GstFlowReturn -gst_avi_demux_stream_header_pull (GstAviDemux * avi) -{ - GstFlowReturn res; - GstBuffer *buf, *sub = NULL; - guint32 tag; - guint offset = 4; - gint64 stop; - GstElement *element = GST_ELEMENT_CAST (avi); - GstClockTime stamp; - GstTagList *tags = NULL; - - stamp = gst_util_get_timestamp (); - - /* the header consists of a 'hdrl' LIST tag */ - res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf); - if (res != GST_FLOW_OK) - goto pull_range_failed; - else if (tag != GST_RIFF_TAG_LIST) - goto no_list; - else if (GST_BUFFER_SIZE (buf) < 4) - goto no_header; - - GST_DEBUG_OBJECT (avi, "parsing headers"); - - /* Find the 'hdrl' LIST tag */ - while (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)) != GST_RIFF_LIST_hdrl) { - GST_LOG_OBJECT (avi, "buffer contains %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (GST_READ_UINT32_LE (GST_BUFFER_DATA (buf)))); - - /* Eat up */ - gst_buffer_unref (buf); - - /* read new chunk */ - res = gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, &buf); - if (res != GST_FLOW_OK) - goto pull_range_failed; - else if (tag != GST_RIFF_TAG_LIST) - goto no_list; - else if (GST_BUFFER_SIZE (buf) < 4) - goto no_header; - } - - GST_DEBUG_OBJECT (avi, "hdrl LIST tag found"); - - gst_avi_demux_roundup_list (avi, &buf); - - /* the hdrl starts with a 'avih' header */ - if (!gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) - goto no_avih; - else if (tag != GST_RIFF_TAG_avih) - goto no_avih; - else if (!gst_avi_demux_parse_avih (avi, sub, &avi->avih)) - goto invalid_avih; - - GST_DEBUG_OBJECT (avi, "AVI header ok, reading elements from header"); - - /* now, read the elements from the header until the end */ - while (gst_riff_parse_chunk (element, buf, &offset, &tag, &sub)) { - /* sub can be NULL on empty tags */ - if (!sub) - continue; - - switch (tag) { - case GST_RIFF_TAG_LIST: - { - guint8 *data; - guint32 fourcc; - - if (GST_BUFFER_SIZE (sub) < 4) - goto next; - - data = GST_BUFFER_DATA (sub); - fourcc = GST_READ_UINT32_LE (data); - - switch (fourcc) { - case GST_RIFF_LIST_strl: - if (!(gst_avi_demux_parse_stream (avi, sub))) { - GST_ELEMENT_WARNING (avi, STREAM, DEMUX, (NULL), - ("failed to parse stream, ignoring")); - sub = NULL; -#ifdef DIVX_DRM - goto invalid_stream; -#endif - } - sub = NULL; - goto next; - case GST_RIFF_LIST_odml: - gst_avi_demux_parse_odml (avi, sub); - sub = NULL; - break; - case GST_RIFF_LIST_INFO: - GST_BUFFER_DATA (sub) = data + 4; - GST_BUFFER_SIZE (sub) -= 4; - gst_riff_parse_info (element, sub, &tags); - if (tags) { - if (avi->globaltags) { - gst_tag_list_insert (avi->globaltags, tags, - GST_TAG_MERGE_REPLACE); - } else { - avi->globaltags = tags; - } - } - tags = NULL; - break; - default: - GST_WARNING_OBJECT (avi, - "Unknown list %" GST_FOURCC_FORMAT " in AVI header", - GST_FOURCC_ARGS (fourcc)); - GST_MEMDUMP_OBJECT (avi, "Unknown list", GST_BUFFER_DATA (sub), - GST_BUFFER_SIZE (sub)); - /* fall-through */ - case GST_RIFF_TAG_JUNQ: - case GST_RIFF_TAG_JUNK: - goto next; - } - break; - } - case GST_RIFF_IDIT: - gst_avi_demux_parse_idit (avi, sub); - goto next; - default: - GST_WARNING_OBJECT (avi, - "Unknown tag %" GST_FOURCC_FORMAT " in AVI header at off %d", - GST_FOURCC_ARGS (tag), offset); - GST_MEMDUMP_OBJECT (avi, "Unknown tag", GST_BUFFER_DATA (sub), - GST_BUFFER_SIZE (sub)); - /* fall-through */ - case GST_RIFF_TAG_JUNQ: - case GST_RIFF_TAG_JUNK: - next: - if (sub) - gst_buffer_unref (sub); - sub = NULL; - break; - } - } - gst_buffer_unref (buf); - GST_DEBUG ("elements parsed"); - - /* check parsed streams */ - if (avi->num_streams == 0) - goto no_streams; - else if (avi->num_streams != avi->avih->streams) { - GST_WARNING_OBJECT (avi, - "Stream header mentioned %d streams, but %d available", - avi->avih->streams, avi->num_streams); - } - - GST_DEBUG_OBJECT (avi, "skipping junk between header and data, offset=%" - G_GUINT64_FORMAT, avi->offset); - - /* Now, find the data (i.e. skip all junk between header and data) */ - do { - guint size; - guint8 *data; - guint32 tag, ltag; - - res = gst_pad_pull_range (avi->sinkpad, avi->offset, 12, &buf); - if (res != GST_FLOW_OK) { - GST_DEBUG_OBJECT (avi, "pull_range failure while looking for tags"); - goto pull_range_failed; - } else if (GST_BUFFER_SIZE (buf) < 12) { - GST_DEBUG_OBJECT (avi, "got %d bytes which is less than 12 bytes", - GST_BUFFER_SIZE (buf)); - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } - - data = GST_BUFFER_DATA (buf); - - tag = GST_READ_UINT32_LE (data); - size = GST_READ_UINT32_LE (data + 4); - ltag = GST_READ_UINT32_LE (data + 8); - - GST_DEBUG ("tag %" GST_FOURCC_FORMAT ", size %u", - GST_FOURCC_ARGS (tag), size); - GST_MEMDUMP ("Tag content", data, GST_BUFFER_SIZE (buf)); - gst_buffer_unref (buf); - - switch (tag) { - case GST_RIFF_TAG_LIST:{ - switch (ltag) { - case GST_RIFF_LIST_movi: - GST_DEBUG_OBJECT (avi, - "Reached the 'movi' tag, we're done with skipping"); - goto skipping_done; - case GST_RIFF_LIST_INFO: - res = - gst_riff_read_chunk (element, avi->sinkpad, &avi->offset, &tag, - &buf); - if (res != GST_FLOW_OK) { - GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk"); - goto pull_range_failed; - } - GST_DEBUG ("got size %u", GST_BUFFER_SIZE (buf)); - if (size < 4) { - GST_DEBUG ("skipping INFO LIST prefix"); - avi->offset += (4 - GST_ROUND_UP_2 (size)); - gst_buffer_unref (buf); - continue; - } - - sub = gst_buffer_create_sub (buf, 4, GST_BUFFER_SIZE (buf) - 4); - gst_riff_parse_info (element, sub, &tags); - if (tags) { - if (avi->globaltags) { - gst_tag_list_insert (avi->globaltags, tags, - GST_TAG_MERGE_REPLACE); - } else { - avi->globaltags = tags; - } - } - tags = NULL; - if (sub) { - gst_buffer_unref (sub); - sub = NULL; - } - gst_buffer_unref (buf); - /* gst_riff_read_chunk() has already advanced avi->offset */ - break; - default: - GST_WARNING_OBJECT (avi, - "Skipping unknown list tag %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (ltag)); - avi->offset += 8 + GST_ROUND_UP_2 (size); - break; - } - } - break; - default: - GST_WARNING_OBJECT (avi, "Skipping unknown tag %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (tag)); - /* Fall-through */ - case GST_MAKE_FOURCC ('J', 'U', 'N', 'Q'): - case GST_MAKE_FOURCC ('J', 'U', 'N', 'K'): - /* Only get buffer for debugging if the memdump is needed */ - if (gst_debug_category_get_threshold (GST_CAT_DEFAULT) >= 9) { - res = gst_pad_pull_range (avi->sinkpad, avi->offset, size, &buf); - if (res != GST_FLOW_OK) { - GST_DEBUG_OBJECT (avi, "couldn't read INFO chunk"); - goto pull_range_failed; - } - GST_MEMDUMP ("Junk", GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); - gst_buffer_unref (buf); - } - avi->offset += 8 + GST_ROUND_UP_2 (size); - break; - } - } while (1); -skipping_done: - - GST_DEBUG_OBJECT (avi, "skipping done ... (streams=%u, stream[0].indexes=%p)", - avi->num_streams, avi->stream[0].indexes); - - /* create or read stream index (for seeking) */ - if (avi->stream[0].indexes != NULL) { - /* we read a super index already (gst_avi_demux_parse_superindex() ) */ - gst_avi_demux_read_subindexes_pull (avi); - } - if (!avi->have_index) { - if (avi->avih->flags & GST_RIFF_AVIH_HASINDEX) - gst_avi_demux_stream_index (avi); - - /* still no index, scan */ - if (!avi->have_index) { - gst_avi_demux_stream_scan (avi); - - /* still no index.. this is a fatal error for now. - * FIXME, we should switch to plain push mode without seeking - * instead of failing. */ - if (!avi->have_index) - goto no_index; - } - } - /* use the indexes now to construct nice durations */ - gst_avi_demux_calculate_durations_from_index (avi); - - gst_avi_demux_expose_streams (avi, FALSE); - - /* create initial NEWSEGMENT event */ - if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE) - stop = avi->segment.duration; - - GST_DEBUG_OBJECT (avi, "segment stop %" G_GINT64_FORMAT, stop); - - /* do initial seek to the default segment values */ - gst_avi_demux_do_seek (avi, &avi->segment); - - /* prepare initial segment */ - if (avi->seg_event) - gst_event_unref (avi->seg_event); - avi->seg_event = gst_event_new_new_segment_full - (FALSE, avi->segment.rate, avi->segment.applied_rate, GST_FORMAT_TIME, - avi->segment.start, stop, avi->segment.time); - - stamp = gst_util_get_timestamp () - stamp; - GST_DEBUG_OBJECT (avi, "pulling header took %" GST_TIME_FORMAT, - GST_TIME_ARGS (stamp)); - - /* at this point we know all the streams and we can signal the no more - * pads signal */ - GST_DEBUG_OBJECT (avi, "signaling no more pads"); - gst_element_no_more_pads (GST_ELEMENT_CAST (avi)); - - return GST_FLOW_OK; - - /* ERRORS */ -no_list: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Invalid AVI header (no LIST at start): %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag))); - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } -no_header: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Invalid AVI header (no hdrl at start): %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag))); - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } -no_avih: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Invalid AVI header (no avih at start): %" - GST_FOURCC_FORMAT, GST_FOURCC_ARGS (tag))); - if (sub) - gst_buffer_unref (sub); - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } -invalid_avih: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Invalid AVI header (cannot parse avih at start)")); - gst_buffer_unref (buf); - return GST_FLOW_ERROR; - } -no_streams: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("No streams found")); - return GST_FLOW_ERROR; - } -no_index: - { - GST_WARNING ("file without or too big index"); - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("Could not get/create index")); - return GST_FLOW_ERROR; - } -pull_range_failed: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), - ("pull_range flow reading header: %s", gst_flow_get_name (res))); - return GST_FLOW_ERROR; - } -#ifdef DIVX_DRM -invalid_stream: - { - gst_buffer_unref(buf); - return GST_FLOW_ERROR; - } -#endif -} - -/* move a stream to @index */ -static void -gst_avi_demux_move_stream (GstAviDemux * avi, GstAviStream * stream, - GstSegment * segment, guint index) -{ - GST_DEBUG_OBJECT (avi, "Move stream %d to %u", stream->num, index); - - if (segment->rate < 0.0) { - guint next_key; - /* Because we don't know the frame order we need to push from the prev keyframe - * to the next keyframe. If there is a smart decoder downstream he will notice - * that there are too many encoded frames send and return UNEXPECTED when there - * are enough decoded frames to fill the segment. */ -#ifdef AVIDEMUX_MODIFICATION - next_key = gst_avi_demux_index_for_time (avi, stream, avi->seek_kf_offset); -#else - next_key = gst_avi_demux_index_next (avi, stream, index, TRUE); -#endif - - /* FIXME, we go back to 0, we should look at segment.start. We will however - * stop earlier when the see the timestamp < segment.start */ - stream->start_entry = 0; - stream->step_entry = index; - stream->current_entry = index; - stream->stop_entry = next_key; - - GST_DEBUG_OBJECT (avi, "reverse seek: start %u, step %u, stop %u", - stream->start_entry, stream->step_entry, stream->stop_entry); - } else { - stream->start_entry = index; - stream->step_entry = index; - stream->stop_entry = gst_avi_demux_index_last (avi, stream); - stream->sent_eos = FALSE; - } - if (stream->current_entry != index) { - GST_DEBUG_OBJECT (avi, "Move DISCONT from %u to %u", - stream->current_entry, index); - stream->current_entry = index; - stream->discont = TRUE; - } - - /* update the buffer info */ - gst_avi_demux_get_buffer_info (avi, stream, index, - &stream->current_timestamp, &stream->current_ts_end, - &stream->current_offset, &stream->current_offset_end); - - GST_DEBUG_OBJECT (avi, "Moved to %u, ts %" GST_TIME_FORMAT - ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT - ", off_end %" G_GUINT64_FORMAT, index, - GST_TIME_ARGS (stream->current_timestamp), - GST_TIME_ARGS (stream->current_ts_end), stream->current_offset, - stream->current_offset_end); - - GST_DEBUG_OBJECT (avi, "Seeking to offset %" G_GUINT64_FORMAT, - stream->index[index].offset); -} - -/* - * Do the actual seeking. - */ -static gboolean -gst_avi_demux_do_seek (GstAviDemux * avi, GstSegment * segment) -{ - GstClockTime seek_time; - gboolean keyframe; - guint i, index; - GstAviStream *stream; - - seek_time = segment->last_stop; - -#ifdef AVIDEMUX_MODIFICATION - avi->seek_kf_offset = seek_time; -#endif - - keyframe = !!(segment->flags & GST_SEEK_FLAG_KEY_UNIT); - - GST_DEBUG_OBJECT (avi, "seek to: %" GST_TIME_FORMAT - " keyframe seeking:%d", GST_TIME_ARGS (seek_time), keyframe); - - /* FIXME, this code assumes the main stream with keyframes is stream 0, - * which is mostly correct... */ - stream = &avi->stream[avi->main_stream]; - - /* get the entry index for the requested position */ - index = gst_avi_demux_index_for_time (avi, stream, seek_time); - GST_DEBUG_OBJECT (avi, "Got entry %u", index); - - -#ifdef AVIDEMUX_MODIFICATION - if(segment->rate < 0.0 && index) { - /* If index is keyframe, reduce index by 1, so that we could fetch prev keyframe for video */ - /* This change is done to fix the out of segment issue when seek position is a keyframe position */ - if (ENTRY_IS_KEYFRAME (&stream->index[index])) { - index--; - } - } -#endif - - - /* check if we are already on a keyframe */ - if (!ENTRY_IS_KEYFRAME (&stream->index[index])) { - GST_DEBUG_OBJECT (avi, "not keyframe, searching back"); - /* now go to the previous keyframe, this is where we should start - * decoding from. */ - index = gst_avi_demux_index_prev (avi, stream, index, TRUE); - GST_DEBUG_OBJECT (avi, "previous keyframe at %u", index); - } - - /* move the main stream to this position */ - gst_avi_demux_move_stream (avi, stream, segment, index); - - if (keyframe) { - /* when seeking to a keyframe, we update the result seek time - * to the time of the keyframe. */ - seek_time = stream->current_timestamp; - GST_DEBUG_OBJECT (avi, "keyframe adjusted to %" GST_TIME_FORMAT, - GST_TIME_ARGS (seek_time)); - } - - /* the seek time is also the last_stop and stream time when going - * forwards */ - segment->last_stop = seek_time; - -#ifdef AVIDEMUX_MODIFICATION - /*initialization of rate params */ - stream->trickplay_info->prev_kidx =0; - stream->trickplay_info->next_kidx=0; - stream->trickplay_info->kidxs_dur_diff=0; - stream->trickplay_info->start_pos = segment->last_stop; - /* Adjust seek_time to video keyframe's timestamp so that audio can align to that position */ - if(segment->rate < 0.0) - seek_time = stream->current_timestamp; -#else - if (segment->rate > 0.0) - segment->time = seek_time; -#endif - - /* now set DISCONT and align the other streams */ - for (i = 0; i < avi->num_streams; i++) { - GstAviStream *ostream; - - ostream = &avi->stream[i]; - if ((ostream == stream) || (ostream->index == NULL)) - continue; - - /* get the entry index for the requested position */ - index = gst_avi_demux_index_for_time (avi, ostream, seek_time); - - /* move to previous keyframe */ - if (!ENTRY_IS_KEYFRAME (&ostream->index[index])) - index = gst_avi_demux_index_prev (avi, ostream, index, TRUE); - - gst_avi_demux_move_stream (avi, ostream, segment, index); - } - GST_DEBUG_OBJECT (avi, "done seek to: %" GST_TIME_FORMAT, - GST_TIME_ARGS (seek_time)); - - return TRUE; -} - -/* - * Handle seek event in pull mode. - */ -static gboolean -gst_avi_demux_handle_seek (GstAviDemux * avi, GstPad * pad, GstEvent * event) -{ - gdouble rate; - GstFormat format; - GstSeekFlags flags; - GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type; - gint64 cur = 0, stop; - gboolean flush; - gboolean update; - GstSegment seeksegment = { 0, }; - gint i; - - if (event) { - GST_DEBUG_OBJECT (avi, "doing seek with event"); - - gst_event_parse_seek (event, &rate, &format, &flags, - &cur_type, &cur, &stop_type, &stop); - - /* we have to have a format as the segment format. Try to convert - * if not. */ - if (format != GST_FORMAT_TIME) { - GstFormat fmt = GST_FORMAT_TIME; - gboolean res = TRUE; - - if (cur_type != GST_SEEK_TYPE_NONE) - res = gst_pad_query_convert (pad, format, cur, &fmt, &cur); - if (res && stop_type != GST_SEEK_TYPE_NONE) - res = gst_pad_query_convert (pad, format, stop, &fmt, &stop); - if (!res) - goto no_format; - - format = fmt; - } - GST_DEBUG_OBJECT (avi, - "seek requested: rate %g cur %" GST_TIME_FORMAT " stop %" - GST_TIME_FORMAT, rate, GST_TIME_ARGS (cur), GST_TIME_ARGS (stop)); - /* FIXME: can we do anything with rate!=1.0 */ - } else { - GST_DEBUG_OBJECT (avi, "doing seek without event"); - flags = 0; - rate = 1.0; - } - - /* save flush flag */ - flush = flags & GST_SEEK_FLAG_FLUSH; - - if (flush) { - GstEvent *fevent = gst_event_new_flush_start (); - - /* for a flushing seek, we send a flush_start on all pads. This will - * eventually stop streaming with a WRONG_STATE. We can thus eventually - * take the STREAM_LOCK. */ - GST_DEBUG_OBJECT (avi, "sending flush start"); - gst_avi_demux_push_event (avi, gst_event_ref (fevent)); - gst_pad_push_event (avi->sinkpad, fevent); - } else { - /* a non-flushing seek, we PAUSE the task so that we can take the - * STREAM_LOCK */ - GST_DEBUG_OBJECT (avi, "non flushing seek, pausing task"); - gst_pad_pause_task (avi->sinkpad); - } - - /* wait for streaming to stop */ - GST_DEBUG_OBJECT (avi, "wait for streaming to stop"); - GST_PAD_STREAM_LOCK (avi->sinkpad); - - /* copy segment, we need this because we still need the old - * segment when we close the current segment. */ - memcpy (&seeksegment, &avi->segment, sizeof (GstSegment)); - - if (event) { - GST_DEBUG_OBJECT (avi, "configuring seek"); - gst_segment_set_seek (&seeksegment, rate, format, flags, - cur_type, cur, stop_type, stop, &update); - } - -#ifdef AVIDEMUX_MODIFICATION - if (cur != GST_CLOCK_TIME_NONE) - gst_segment_set_last_stop (&seeksegment, GST_FORMAT_TIME, cur); -#endif - - /* do the seek, seeksegment.last_stop contains the new position, this - * actually never fails. */ - gst_avi_demux_do_seek (avi, &seeksegment); - - gst_event_replace (&avi->close_seg_event, NULL); - if (flush) { - GstEvent *fevent = gst_event_new_flush_stop (); - - GST_DEBUG_OBJECT (avi, "sending flush stop"); - gst_avi_demux_push_event (avi, gst_event_ref (fevent)); - gst_pad_push_event (avi->sinkpad, fevent); - } else if (avi->segment_running) { - /* we are running the current segment and doing a non-flushing seek, - * close the segment first based on the last_stop. */ - GST_DEBUG_OBJECT (avi, "closing running segment %" G_GINT64_FORMAT - " to %" G_GINT64_FORMAT, avi->segment.start, avi->segment.last_stop); - avi->close_seg_event = gst_event_new_new_segment_full (TRUE, - avi->segment.rate, avi->segment.applied_rate, avi->segment.format, - avi->segment.start, avi->segment.last_stop, avi->segment.time); - } - - /* now update the real segment info */ - memcpy (&avi->segment, &seeksegment, sizeof (GstSegment)); - - /* post the SEGMENT_START message when we do segmented playback */ - if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) { - gst_element_post_message (GST_ELEMENT_CAST (avi), - gst_message_new_segment_start (GST_OBJECT_CAST (avi), - avi->segment.format, avi->segment.last_stop)); - } - - /* prepare for streaming again */ - if ((stop = avi->segment.stop) == GST_CLOCK_TIME_NONE) - stop = avi->segment.duration; - - /* queue the segment event for the streaming thread. */ - if (avi->seg_event) - gst_event_unref (avi->seg_event); - if (avi->segment.rate > 0.0) { - /* forwards goes from last_stop to stop */ - avi->seg_event = gst_event_new_new_segment_full (FALSE, - avi->segment.rate, avi->segment.applied_rate, avi->segment.format, - avi->segment.last_stop, stop, avi->segment.time); - } else { -#ifdef AVIDEMUX_MODIFICATION - avi->segment.start = 0; - avi->segment.time = 0; -#endif - /* reverse goes from start to last_stop */ - avi->seg_event = gst_event_new_new_segment_full (FALSE, - avi->segment.rate, avi->segment.applied_rate, avi->segment.format, - avi->segment.start, avi->segment.last_stop, avi->segment.time); - } - - if (!avi->streaming) { - avi->segment_running = TRUE; - gst_pad_start_task (avi->sinkpad, (GstTaskFunction) gst_avi_demux_loop, - avi->sinkpad); - } - /* reset the last flow and mark discont, seek is always DISCONT */ - for (i = 0; i < avi->num_streams; i++) { - GST_DEBUG_OBJECT (avi, "marking DISCONT"); - avi->stream[i].last_flow = GST_FLOW_OK; - avi->stream[i].discont = TRUE; - } - GST_PAD_STREAM_UNLOCK (avi->sinkpad); - - return TRUE; - - /* ERRORS */ -no_format: - { - GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted."); - return FALSE; - } -} - -/* - * Handle seek event in push mode. - */ -static gboolean -avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, GstEvent * event) -{ - gdouble rate; - GstFormat format; - GstSeekFlags flags; - GstSeekType cur_type = GST_SEEK_TYPE_NONE, stop_type; - gint64 cur, stop; - gboolean keyframe; - GstAviStream *stream; - guint index; - guint n, str_num; - guint64 min_offset; - GstSegment seeksegment; - gboolean update; - - /* check we have the index */ - if (!avi->have_index) { - GST_DEBUG_OBJECT (avi, "no seek index built, seek aborted."); - return FALSE; - } else { - GST_DEBUG_OBJECT (avi, "doing push-based seek with event"); - } - - gst_event_parse_seek (event, &rate, &format, &flags, - &cur_type, &cur, &stop_type, &stop); - - if (format != GST_FORMAT_TIME) { - GstFormat fmt = GST_FORMAT_TIME; - gboolean res = TRUE; - - if (cur_type != GST_SEEK_TYPE_NONE) - res = gst_pad_query_convert (pad, format, cur, &fmt, &cur); - if (res && stop_type != GST_SEEK_TYPE_NONE) - res = gst_pad_query_convert (pad, format, stop, &fmt, &stop); - if (!res) { - GST_DEBUG_OBJECT (avi, "unsupported format given, seek aborted."); - return FALSE; - } - - format = fmt; - } - - /* let gst_segment handle any tricky stuff */ - GST_DEBUG_OBJECT (avi, "configuring seek"); - memcpy (&seeksegment, &avi->segment, sizeof (GstSegment)); - gst_segment_set_seek (&seeksegment, rate, format, flags, - cur_type, cur, stop_type, stop, &update); - - keyframe = !!(flags & GST_SEEK_FLAG_KEY_UNIT); - cur = seeksegment.last_stop; - - GST_DEBUG_OBJECT (avi, - "Seek requested: ts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT - ", kf %u, rate %lf", GST_TIME_ARGS (cur), GST_TIME_ARGS (stop), keyframe, - rate); - - if (rate < 0) { - GST_DEBUG_OBJECT (avi, "negative rate seek not supported in push mode"); - return FALSE; - } - - /* FIXME, this code assumes the main stream with keyframes is stream 0, - * which is mostly correct... */ - str_num = avi->main_stream; - stream = &avi->stream[str_num]; - - /* get the entry index for the requested position */ - index = gst_avi_demux_index_for_time (avi, stream, cur); - GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, - str_num, index, GST_TIME_ARGS (cur)); - - /* check if we are already on a keyframe */ - if (!ENTRY_IS_KEYFRAME (&stream->index[index])) { - GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back"); - /* now go to the previous keyframe, this is where we should start - * decoding from. */ - index = gst_avi_demux_index_prev (avi, stream, index, TRUE); - GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", index); - } - - gst_avi_demux_get_buffer_info (avi, stream, index, - &stream->current_timestamp, &stream->current_ts_end, - &stream->current_offset, &stream->current_offset_end); - - /* re-use cur to be the timestamp of the seek as it _will_ be */ - cur = stream->current_timestamp; - - min_offset = stream->index[index].offset; - avi->seek_kf_offset = min_offset - 8; - - GST_DEBUG_OBJECT (avi, - "Seek to: ts %" GST_TIME_FORMAT " (on str %u, idx %u, offset %" - G_GUINT64_FORMAT ")", GST_TIME_ARGS (stream->current_timestamp), str_num, - index, min_offset); - - for (n = 0; n < avi->num_streams; n++) { - GstAviStream *str = &avi->stream[n]; - guint idx; - - if (n == avi->main_stream) - continue; - - /* get the entry index for the requested position */ - idx = gst_avi_demux_index_for_time (avi, str, cur); - GST_DEBUG_OBJECT (avi, "str %u: Found entry %u for %" GST_TIME_FORMAT, n, - idx, GST_TIME_ARGS (cur)); - - /* check if we are already on a keyframe */ - if (!ENTRY_IS_KEYFRAME (&str->index[idx])) { - GST_DEBUG_OBJECT (avi, "Entry is not a keyframe - searching back"); - /* now go to the previous keyframe, this is where we should start - * decoding from. */ - idx = gst_avi_demux_index_prev (avi, str, idx, TRUE); - GST_DEBUG_OBJECT (avi, "Found previous keyframe at %u", idx); - } - - gst_avi_demux_get_buffer_info (avi, str, idx, - &str->current_timestamp, &str->current_ts_end, - &str->current_offset, &str->current_offset_end); - - if (str->index[idx].offset < min_offset) { - min_offset = str->index[idx].offset; - GST_DEBUG_OBJECT (avi, - "Found an earlier offset at %" G_GUINT64_FORMAT ", str %u", - min_offset, n); - str_num = n; - stream = str; - index = idx; - } - } - - GST_DEBUG_OBJECT (avi, - "Seek performed: str %u, offset %" G_GUINT64_FORMAT ", idx %u, ts %" - GST_TIME_FORMAT ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT - ", off_end %" G_GUINT64_FORMAT, str_num, min_offset, index, - GST_TIME_ARGS (stream->current_timestamp), - GST_TIME_ARGS (stream->current_ts_end), stream->current_offset, - stream->current_offset_end); - - /* index data refers to data, not chunk header (for pull mode convenience) */ - min_offset -= 8; - GST_DEBUG_OBJECT (avi, "seeking to chunk at offset %" G_GUINT64_FORMAT, - min_offset); - - if (!perform_seek_to_offset (avi, min_offset)) { - GST_DEBUG_OBJECT (avi, "seek event failed!"); - return FALSE; - } - - return TRUE; -} - -/* - * Handle whether we can perform the seek event or if we have to let the chain - * function handle seeks to build the seek indexes first. - */ -static gboolean -gst_avi_demux_handle_seek_push (GstAviDemux * avi, GstPad * pad, - GstEvent * event) -{ - /* check for having parsed index already */ - if (!avi->have_index) { - guint64 offset = 0; - gboolean building_index; - - GST_OBJECT_LOCK (avi); - /* handle the seek event in the chain function */ - avi->state = GST_AVI_DEMUX_SEEK; - - /* copy the event */ - if (avi->seek_event) - gst_event_unref (avi->seek_event); - avi->seek_event = gst_event_ref (event); - - /* set the building_index flag so that only one thread can setup the - * structures for index seeking. */ - building_index = avi->building_index; - if (!building_index) { - avi->building_index = TRUE; - if (avi->stream[0].indexes) { - avi->odml_stream = 0; - avi->odml_subidxs = avi->stream[avi->odml_stream].indexes; - offset = avi->odml_subidxs[0]; - } else { - offset = avi->idx1_offset; - } - } - GST_OBJECT_UNLOCK (avi); - - if (!building_index) { - /* seek to the first subindex or legacy index */ - GST_INFO_OBJECT (avi, - "Seeking to legacy index/first subindex at %" G_GUINT64_FORMAT, - offset); - return perform_seek_to_offset (avi, offset); - } - - /* FIXME: we have to always return true so that we don't block the seek - * thread. - * Note: maybe it is OK to return true if we're still building the index */ - return TRUE; - } - - return avi_demux_handle_seek_push (avi, pad, event); -} - -/* - * Helper for gst_avi_demux_invert() - */ -static inline void -swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes) -{ - memcpy (tmp, d1, bytes); - memcpy (d1, d2, bytes); - memcpy (d2, tmp, bytes); -} - - -#define gst_avi_demux_is_uncompressed(fourcc) \ - (fourcc && \ - (fourcc == GST_RIFF_DIB || \ - fourcc == GST_RIFF_rgb || \ - fourcc == GST_RIFF_RGB || fourcc == GST_RIFF_RAW)) - -/* - * Invert DIB buffers... Takes existing buffer and - * returns either the buffer or a new one (with old - * one dereferenced). - * FIXME: can't we preallocate tmp? and remember stride, bpp? - */ -static GstBuffer * -gst_avi_demux_invert (GstAviStream * stream, GstBuffer * buf) -{ - GstStructure *s; - gint y, w, h; - gint bpp, stride; - guint8 *tmp = NULL; - - if (stream->strh->type != GST_RIFF_FCC_vids) - return buf; - - if (!gst_avi_demux_is_uncompressed (stream->strh->fcc_handler)) { - return buf; /* Ignore non DIB buffers */ - } - - s = gst_caps_get_structure (GST_PAD_CAPS (stream->pad), 0); - if (!gst_structure_get_int (s, "bpp", &bpp)) { - GST_WARNING ("Failed to retrieve depth from caps"); - return buf; - } - - if (stream->strf.vids == NULL) { - GST_WARNING ("Failed to retrieve vids for stream"); - return buf; - } - - h = stream->strf.vids->height; - w = stream->strf.vids->width; - stride = GST_ROUND_UP_4 (w * (bpp / 8)); - - buf = gst_buffer_make_writable (buf); - if (GST_BUFFER_SIZE (buf) < (stride * h)) { - GST_WARNING ("Buffer is smaller than reported Width x Height x Depth"); - return buf; - } - - tmp = g_malloc (stride); - - for (y = 0; y < h / 2; y++) { - swap_line (GST_BUFFER_DATA (buf) + stride * y, - GST_BUFFER_DATA (buf) + stride * (h - 1 - y), tmp, stride); - } - - g_free (tmp); - - return buf; -} - -static void -gst_avi_demux_add_assoc (GstAviDemux * avi, GstAviStream * stream, - GstClockTime timestamp, guint64 offset, gboolean keyframe) -{ - /* do not add indefinitely for open-ended streaming */ - if (G_UNLIKELY (avi->element_index && avi->seekable)) { - GST_LOG_OBJECT (avi, "adding association %" GST_TIME_FORMAT "-> %" - G_GUINT64_FORMAT, GST_TIME_ARGS (timestamp), offset); - gst_index_add_association (avi->element_index, avi->index_id, - keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : - GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp, - GST_FORMAT_BYTES, offset, NULL); - /* current_entry is DEFAULT (frame #) */ - gst_index_add_association (avi->element_index, stream->index_id, - keyframe ? GST_ASSOCIATION_FLAG_KEY_UNIT : - GST_ASSOCIATION_FLAG_DELTA_UNIT, GST_FORMAT_TIME, timestamp, - GST_FORMAT_BYTES, offset, GST_FORMAT_DEFAULT, stream->current_entry, - NULL); - } -} - -/* - * Returns the aggregated GstFlowReturn. - */ -static GstFlowReturn -gst_avi_demux_combine_flows (GstAviDemux * avi, GstAviStream * stream, - GstFlowReturn ret) -{ - guint i; - gboolean unexpected = FALSE, not_linked = TRUE; - - /* store the value */ - stream->last_flow = ret; - - /* any other error that is not-linked or eos can be returned right away */ - if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED)) - goto done; - - /* only return NOT_LINKED if all other pads returned NOT_LINKED */ - for (i = 0; i < avi->num_streams; i++) { - GstAviStream *ostream = &avi->stream[i]; - - ret = ostream->last_flow; - /* no unexpected or unlinked, return */ - if (G_LIKELY (ret != GST_FLOW_UNEXPECTED && ret != GST_FLOW_NOT_LINKED)) - goto done; - - /* we check to see if we have at least 1 unexpected or all unlinked */ - unexpected |= (ret == GST_FLOW_UNEXPECTED); - not_linked &= (ret == GST_FLOW_NOT_LINKED); - } - /* when we get here, we all have unlinked or unexpected */ - if (not_linked) - ret = GST_FLOW_NOT_LINKED; - else if (unexpected) - ret = GST_FLOW_UNEXPECTED; -done: - GST_LOG_OBJECT (avi, "combined %s to return %s", - gst_flow_get_name (stream->last_flow), gst_flow_get_name (ret)); - return ret; -} - -/* move @stream to the next position in its index */ -static GstFlowReturn -gst_avi_demux_advance (GstAviDemux * avi, GstAviStream * stream, - GstFlowReturn ret) -{ - guint old_entry, new_entry; - - old_entry = stream->current_entry; - /* move forwards */ - new_entry = old_entry + 1; - - /* see if we reached the end */ - if (new_entry >= stream->stop_entry) { - if (avi->segment.rate < 0.0) { - -#ifdef AVIDEMUX_MODIFICATION - GST_DEBUG_OBJECT (avi, "backward reached stop %u", stream->stop_entry); - goto eos; -#else - if (stream->step_entry == stream->start_entry) { - /* we stepped all the way to the start, eos */ - GST_DEBUG_OBJECT (avi, "reverse reached start %u", stream->start_entry); - goto eos; - } - /* backwards, stop becomes step, find a new step */ - stream->stop_entry = stream->step_entry; - stream->step_entry = gst_avi_demux_index_prev (avi, stream, - stream->stop_entry, TRUE); - - GST_DEBUG_OBJECT (avi, - "reverse playback jump: start %u, step %u, stop %u", - stream->start_entry, stream->step_entry, stream->stop_entry); - - /* and start from the previous keyframe now */ - new_entry = stream->step_entry; -#endif - } else { - /* EOS */ - GST_DEBUG_OBJECT (avi, "forward reached stop %u", stream->stop_entry); - goto eos; - } - } - - if (new_entry != old_entry) { - stream->current_entry = new_entry; - stream->current_total = stream->index[new_entry].total; - - if (new_entry == old_entry + 1) { - GST_DEBUG_OBJECT (avi, "moved forwards from %u to %u", - old_entry, new_entry); - /* we simply moved one step forwards, reuse current info */ - stream->current_timestamp = stream->current_ts_end; - stream->current_offset = stream->current_offset_end; - gst_avi_demux_get_buffer_info (avi, stream, new_entry, - NULL, &stream->current_ts_end, NULL, &stream->current_offset_end); - } else { - /* we moved DISCONT, full update */ - gst_avi_demux_get_buffer_info (avi, stream, new_entry, - &stream->current_timestamp, &stream->current_ts_end, - &stream->current_offset, &stream->current_offset_end); - /* and MARK discont for this stream */ - stream->last_flow = GST_FLOW_OK; - stream->discont = TRUE; - GST_DEBUG_OBJECT (avi, "Moved from %u to %u, ts %" GST_TIME_FORMAT - ", ts_end %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT - ", off_end %" G_GUINT64_FORMAT, old_entry, new_entry, - GST_TIME_ARGS (stream->current_timestamp), - GST_TIME_ARGS (stream->current_ts_end), stream->current_offset, - stream->current_offset_end); - } - } - return ret; - - /* ERROR */ -eos: - { - GST_DEBUG_OBJECT (avi, "we are EOS"); - /* setting current_timestamp to -1 marks EOS */ - stream->current_timestamp = -1; - return GST_FLOW_UNEXPECTED; - } -} - -/* find the stream with the lowest current position when going forwards or with - * the highest position when going backwards, this is the stream - * we should push from next */ -static gint -gst_avi_demux_find_next (GstAviDemux * avi, gfloat rate) -{ - guint64 min_time, max_time; - guint stream_num, i; - - max_time = 0; - min_time = G_MAXUINT64; - stream_num = -1; - - for (i = 0; i < avi->num_streams; i++) { - guint64 position; - GstAviStream *stream; - - stream = &avi->stream[i]; - - /* ignore streams that finished */ - if (stream->last_flow == GST_FLOW_UNEXPECTED) - continue; - - position = stream->current_timestamp; - - /* position of -1 is EOS */ - if (position != -1) { -#ifdef AVIDEMUX_MODIFICATION - if (position < min_time) { - min_time = position; - stream_num = i; - } -#else - if (rate > 0.0 && position < min_time) { - min_time = position; - stream_num = i; - } else if (rate < 0.0 && position >= max_time) { - max_time = position; - stream_num = i; - } -#endif - } - } - return stream_num; -} - -static GstFlowReturn -gst_avi_demux_loop_data (GstAviDemux * avi) -{ - GstFlowReturn ret = GST_FLOW_OK; - guint stream_num; - GstAviStream *stream; - gboolean processed = FALSE; - GstBuffer *buf; - guint64 offset, size; - GstClockTime timestamp, duration; - guint64 out_offset, out_offset_end; - gboolean keyframe; - GstAviIndexEntry *entry; - - do { - stream_num = gst_avi_demux_find_next (avi, avi->segment.rate); - - /* all are EOS */ - if (G_UNLIKELY (stream_num == -1)) { - GST_DEBUG_OBJECT (avi, "all streams are EOS"); - goto eos; - } - - /* we have the stream now */ - stream = &avi->stream[stream_num]; - - if ((stream->current_entry + 1) >= stream->stop_entry) { - if (stream->sent_eos == FALSE) { - if(avi->segment.applied_rate > 0.0) - { - GstEvent *event = NULL; - event = gst_event_new_new_segment_full (FALSE, - avi->segment.rate, avi->segment.applied_rate, avi->segment.format, - stream->hdr_duration, stream->hdr_duration, avi->segment.time); - gst_pad_push_event (stream->pad, event); - } - - GST_DEBUG_OBJECT(avi, "Sending EOS for stream %d", stream_num); - gst_pad_push_event(stream->pad, gst_event_new_eos ()); - stream->sent_eos = TRUE; - stream->last_flow = GST_FLOW_UNEXPECTED; - continue; - } - } - - /* skip streams without pads */ - if (!stream->pad) { - GST_DEBUG_OBJECT (avi, "skipping entry from stream %d without pad", - stream_num); - goto next; - } - - /* get the timing info for the entry */ - timestamp = stream->current_timestamp; - duration = stream->current_ts_end - timestamp; - out_offset = stream->current_offset; - out_offset_end = stream->current_offset_end; - - /* get the entry data info */ - entry = &stream->index[stream->current_entry]; - offset = entry->offset; - size = entry->size; - keyframe = ENTRY_IS_KEYFRAME (entry); - - -#ifdef AVIDEMUX_MODIFICATION - /* Forward trickplay */ - if(avi->segment.rate > 1.0 && stream->strh->type == GST_RIFF_FCC_vids) { - gst_avidemux_forward_trickplay (avi, stream, ×tamp); - } else if(avi->segment.rate < 0.0 && stream->strh->type == GST_RIFF_FCC_vids) { - gst_avidemux_backward_trickplay (avi, stream, ×tamp); - } -#endif - - /* skip empty entries */ - if (size == 0) { - GST_DEBUG_OBJECT (avi, "Skipping entry %u (%" G_GUINT64_FORMAT ", %p)", - stream->current_entry, size, stream->pad); - goto next; - } - - if (avi->segment.rate > 0.0) { - /* only check this for fowards playback for now */ -#ifdef AVIDEMUX_MODIFICATION - if (GST_CLOCK_TIME_IS_VALID (avi->segment.stop) - && (timestamp > avi->segment.stop)) { -#else - if (keyframe && GST_CLOCK_TIME_IS_VALID (avi->segment.stop) - && (timestamp > avi->segment.stop)) { -#endif - goto eos_stop; - } - } - - GST_LOG ("reading buffer (size=%" G_GUINT64_FORMAT "), stream %d, pos %" - G_GUINT64_FORMAT " (0x%" G_GINT64_MODIFIER "x), kf %d", size, - stream_num, offset, offset, keyframe); - - /* FIXME, check large chunks and cut them up */ - - /* pull in the data */ - ret = gst_pad_pull_range (avi->sinkpad, offset, size, &buf); - if (ret != GST_FLOW_OK) - goto pull_failed; - - /* check for short buffers, this is EOS as well */ - if (GST_BUFFER_SIZE (buf) < size) - goto short_buffer; - - /* invert the picture if needed */ - buf = gst_avi_demux_invert (stream, buf); - - /* mark non-keyframes */ - if (keyframe) - GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT); - else - GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT); - - GST_BUFFER_TIMESTAMP (buf) = timestamp; - GST_BUFFER_DURATION (buf) = duration; - GST_BUFFER_OFFSET (buf) = out_offset; - GST_BUFFER_OFFSET_END (buf) = out_offset_end; - - /* mark discont when pending */ - if (stream->discont) { - GST_DEBUG_OBJECT (avi, "setting DISCONT flag"); - GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT); - stream->discont = FALSE; - } - - gst_avi_demux_add_assoc (avi, stream, timestamp, offset, keyframe); - - gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad)); - - /* update current position in the segment */ - gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, timestamp); -#ifdef AVIDEMUX_MODIFICATION - GST_DEBUG_OBJECT (avi, " %s : Pushing buffer of size %u, ts %" - GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT - ", off_end %" G_GUINT64_FORMAT, - stream_num ? "Audio" : "Video", GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp), - GST_TIME_ARGS (duration), out_offset, out_offset_end); -#else - GST_DEBUG_OBJECT (avi, "Pushing buffer of size %u, ts %" - GST_TIME_FORMAT ", dur %" GST_TIME_FORMAT ", off %" G_GUINT64_FORMAT - ", off_end %" G_GUINT64_FORMAT, - GST_BUFFER_SIZE (buf), GST_TIME_ARGS (timestamp), - GST_TIME_ARGS (duration), out_offset, out_offset_end); -#endif - -#ifdef DIVX_DRM - -#define CHUNK_ID_LEN 4 -#define CHUNK_SIZE_LEN 4 -#define DD_CHUNK_DATA_LEN 10 -#define DD_CHUNK_TOTAL_LEN CHUNK_ID_LEN+CHUNK_SIZE_LEN+DD_CHUNK_DATA_LEN - - if (avi->drmContext)// this is drm - { - GstBuffer* encrypted_buf = NULL; - - if (stream->strh->type == GST_RIFF_FCC_auds) { /* Audio Stream */ - if (DRM_SUCCESS == avi->divx_decrypt_audio (avi->drmContext, GST_BUFFER_DATA(buf), GST_BUFFER_SIZE(buf))) { - GST_DEBUG_OBJECT (avi, "drmDecryptAudio() Success : buffer = %d", GST_BUFFER_SIZE(buf)); - } else { - GST_ERROR_OBJECT (avi, "drmDecryptAudio () Failed : buffer = %d", GST_BUFFER_SIZE(buf)); - } - ret = gst_pad_push (stream->pad, buf); - - } else if (stream->strh->type == GST_RIFF_FCC_vids) { /* Video Stream */ - - /* Read previous dd chunk */ - GstBuffer* dd_chunk_buf = NULL; - if (GST_FLOW_OK != gst_pad_pull_range (avi->sinkpad, - offset-(CHUNK_ID_LEN+CHUNK_SIZE_LEN+DD_CHUNK_TOTAL_LEN), - DD_CHUNK_TOTAL_LEN, &dd_chunk_buf)) { - GST_ERROR_OBJECT (avi, "pull range failed"); - } else { - guint8 tempBuffer[256] = { 0, }; - guint32 tempBufferLength = 0; - int ret; - - ret = avi->divx_prepare_video_bitstream (avi->drmContext, - GST_BUFFER_DATA(dd_chunk_buf)+(CHUNK_ID_LEN+CHUNK_SIZE_LEN), - DD_CHUNK_DATA_LEN, - tempBuffer, - &tempBufferLength ); - - if (ret == DRM_SUCCESS) { - /* Create new buffer and copy retrieved tempBuffer and original buffer to created buffer */ - encrypted_buf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE(buf)+tempBufferLength); - if (encrypted_buf) { - /* FIXME: Can be enhance merge buffer code */ - memcpy (GST_BUFFER_DATA(encrypted_buf), tempBuffer, tempBufferLength); - memcpy (GST_BUFFER_DATA(encrypted_buf)+tempBufferLength, GST_BUFFER_DATA(buf), GST_BUFFER_SIZE(buf)); - gst_buffer_copy_metadata (encrypted_buf, buf, GST_BUFFER_COPY_ALL); - - /* relase buf because we will push encrypted_buf instead of buf */ - gst_buffer_unref (buf); - } else { - GST_ERROR_OBJECT (avi, "gst_buffer_new_and_alloc() failed!!!!"); - } - } else { - GST_ERROR_OBJECT (avi, "divx_prepare_video_bitstream failed!!!! ret = [%d]", ret); - } - } - - /* Release DD-chunk Buffer */ - if (dd_chunk_buf) - gst_buffer_unref (dd_chunk_buf); - - /* Push encrypted_buf if is valid, otherwise push original buffer */ - if (encrypted_buf) - ret = gst_pad_push (stream->pad, encrypted_buf); - else - ret = gst_pad_push (stream->pad, buf); - } - } else { - /* This is normal file */ - ret = gst_pad_push (stream->pad, buf); - } -#else - ret = gst_pad_push (stream->pad, buf); -#endif // DIVX_DRM - - /* mark as processed, we increment the frame and byte counters then - * leave the while loop and return the GstFlowReturn */ - processed = TRUE; - - if (avi->segment.rate < 0) { - if (timestamp > avi->segment.stop && ret == GST_FLOW_UNEXPECTED) { - /* In reverse playback we can get a GST_FLOW_UNEXPECTED when - * we are at the end of the segment, so we just need to jump - * back to the previous section. */ - GST_DEBUG_OBJECT (avi, "downstream has reached end of segment"); - ret = GST_FLOW_OK; - } - } - next: - /* move to next item */ - ret = gst_avi_demux_advance (avi, stream, ret); - - /* combine flows */ - ret = gst_avi_demux_combine_flows (avi, stream, ret); - } while (!processed); - -beach: - return ret; - - /* special cases */ -eos: - { - GST_DEBUG_OBJECT (avi, "No samples left for any streams - EOS"); - ret = GST_FLOW_UNEXPECTED; - goto beach; - } -eos_stop: - { - GST_LOG_OBJECT (avi, "Found keyframe after segment," - " setting EOS (%" GST_TIME_FORMAT " > %" GST_TIME_FORMAT ")", - GST_TIME_ARGS (timestamp), GST_TIME_ARGS (avi->segment.stop)); - ret = GST_FLOW_UNEXPECTED; - /* move to next stream */ - goto next; - } -pull_failed: - { - GST_DEBUG_OBJECT (avi, "pull range failed: pos=%" G_GUINT64_FORMAT - " size=%" G_GUINT64_FORMAT, offset, size); - goto beach; - } -short_buffer: - { - GST_WARNING_OBJECT (avi, "Short read at offset %" G_GUINT64_FORMAT - ", only got %d/%" G_GUINT64_FORMAT " bytes (truncated file?)", offset, - GST_BUFFER_SIZE (buf), size); - gst_buffer_unref (buf); - ret = GST_FLOW_UNEXPECTED; - goto beach; - } -} - -/* - * Read data. If we have an index it delegates to - * gst_avi_demux_process_next_entry(). - */ -static GstFlowReturn -gst_avi_demux_stream_data (GstAviDemux * avi) -{ - guint32 tag = 0; - guint32 size = 0; - gint stream_nr = 0; - GstFlowReturn res = GST_FLOW_OK; - GstFormat format = GST_FORMAT_TIME; - - if (G_UNLIKELY (avi->have_eos)) { - /* Clean adapter, we're done */ - gst_adapter_clear (avi->adapter); - return GST_FLOW_UNEXPECTED; - } - - if (G_UNLIKELY (avi->todrop)) { - guint drop; - - if ((drop = gst_adapter_available (avi->adapter))) { - if (drop > avi->todrop) - drop = avi->todrop; - GST_DEBUG_OBJECT (avi, "Dropping %d bytes", drop); - gst_adapter_flush (avi->adapter, drop); - avi->todrop -= drop; - avi->offset += drop; - } - } - - /* Iterate until need more data, so adapter won't grow too much */ - while (1) { - if (G_UNLIKELY (!gst_avi_demux_peek_chunk_info (avi, &tag, &size))) { - return GST_FLOW_OK; - } - - GST_DEBUG ("Trying chunk (%" GST_FOURCC_FORMAT "), size %d", - GST_FOURCC_ARGS (tag), size); - - if (G_LIKELY ((tag & 0xff) >= '0' && (tag & 0xff) <= '9' && - ((tag >> 8) & 0xff) >= '0' && ((tag >> 8) & 0xff) <= '9')) { - GST_LOG ("Chunk ok"); - } else if ((tag & 0xffff) == (('x' << 8) | 'i')) { - GST_DEBUG ("Found sub-index tag"); - if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) { - /* accept 0 size buffer here */ - avi->abort_buffering = FALSE; - GST_DEBUG (" skipping %d bytes for now", size); - gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size)); - } - return GST_FLOW_OK; - } else if (tag == GST_RIFF_TAG_RIFF) { - /* RIFF tags can appear in ODML files, just jump over them */ - if (gst_adapter_available (avi->adapter) >= 12) { - GST_DEBUG ("Found RIFF tag, skipping RIFF header"); - gst_adapter_flush (avi->adapter, 12); - continue; - } - return GST_FLOW_OK; - } else if (tag == GST_RIFF_TAG_idx1) { - GST_DEBUG ("Found index tag"); - if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) { - /* accept 0 size buffer here */ - avi->abort_buffering = FALSE; - GST_DEBUG (" skipping %d bytes for now", size); - gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size)); - } - return GST_FLOW_OK; - } else if (tag == GST_RIFF_TAG_LIST) { - /* movi chunks might be grouped in rec list */ - if (gst_adapter_available (avi->adapter) >= 12) { - GST_DEBUG ("Found LIST tag, skipping LIST header"); - gst_adapter_flush (avi->adapter, 12); - continue; - } - return GST_FLOW_OK; - } else if (tag == GST_RIFF_TAG_JUNK || tag == GST_RIFF_TAG_JUNQ) { - /* rec list might contain JUNK chunks */ - GST_DEBUG ("Found JUNK tag"); - if (gst_avi_demux_peek_chunk (avi, &tag, &size) || size == 0) { - /* accept 0 size buffer here */ - avi->abort_buffering = FALSE; - GST_DEBUG (" skipping %d bytes for now", size); - gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size)); - } - return GST_FLOW_OK; - } else { - GST_DEBUG ("No more stream chunks, send EOS"); - avi->have_eos = TRUE; - return GST_FLOW_UNEXPECTED; - } - - if (G_UNLIKELY (!gst_avi_demux_peek_chunk (avi, &tag, &size))) { - /* supposedly one hopes to catch a nicer chunk later on ... */ - /* FIXME ?? give up here rather than possibly ending up going - * through the whole file */ - if (avi->abort_buffering) { - avi->abort_buffering = FALSE; - if (size) { - gst_adapter_flush (avi->adapter, 8); - return GST_FLOW_OK; - } - } else { - return GST_FLOW_OK; - } - } - GST_DEBUG ("chunk ID %" GST_FOURCC_FORMAT ", size %u", - GST_FOURCC_ARGS (tag), size); - - stream_nr = CHUNKID_TO_STREAMNR (tag); - - if (G_UNLIKELY (stream_nr < 0 || stream_nr >= avi->num_streams)) { - /* recoverable */ - GST_WARNING ("Invalid stream ID %d (%" GST_FOURCC_FORMAT ")", - stream_nr, GST_FOURCC_ARGS (tag)); - avi->offset += 8 + GST_ROUND_UP_2 (size); - gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size)); - } else { - GstAviStream *stream; - GstClockTime next_ts = 0; - GstBuffer *buf = NULL; - guint64 offset; - gboolean saw_desired_kf = stream_nr != avi->main_stream - || avi->offset >= avi->seek_kf_offset; - - if (stream_nr == avi->main_stream && avi->offset == avi->seek_kf_offset) { - GST_DEBUG_OBJECT (avi, "Desired keyframe reached"); - avi->seek_kf_offset = 0; - } - - if (saw_desired_kf) { - gst_adapter_flush (avi->adapter, 8); - /* get buffer */ - if (size) { - buf = gst_adapter_take_buffer (avi->adapter, GST_ROUND_UP_2 (size)); - /* patch the size */ - GST_BUFFER_SIZE (buf) = size; - } else { - buf = NULL; - } - } else { - GST_DEBUG_OBJECT (avi, - "Desired keyframe not yet reached, flushing chunk"); - gst_adapter_flush (avi->adapter, 8 + GST_ROUND_UP_2 (size)); - } - - offset = avi->offset; - avi->offset += 8 + GST_ROUND_UP_2 (size); - - stream = &avi->stream[stream_nr]; - - /* set delay (if any) - if (stream->strh->init_frames == stream->current_frame && - stream->delay == 0) - stream->delay = next_ts; - */ - - /* parsing of corresponding header may have failed */ - if (G_UNLIKELY (!stream->pad)) { - GST_WARNING_OBJECT (avi, "no pad for stream ID %" GST_FOURCC_FORMAT, - GST_FOURCC_ARGS (tag)); - if (buf) - gst_buffer_unref (buf); - } else { - /* get time of this buffer */ - gst_pad_query_position (stream->pad, &format, (gint64 *) & next_ts); - if (G_UNLIKELY (format != GST_FORMAT_TIME)) - goto wrong_format; - - gst_avi_demux_add_assoc (avi, stream, next_ts, offset, FALSE); - - /* increment our positions */ - stream->current_entry++; - stream->current_total += size; - - /* update current position in the segment */ - gst_segment_set_last_stop (&avi->segment, GST_FORMAT_TIME, next_ts); - - if (saw_desired_kf && buf) { - GstClockTime dur_ts = 0; - - /* invert the picture if needed */ - buf = gst_avi_demux_invert (stream, buf); - - gst_pad_query_position (stream->pad, &format, (gint64 *) & dur_ts); - if (G_UNLIKELY (format != GST_FORMAT_TIME)) - goto wrong_format; - - GST_BUFFER_TIMESTAMP (buf) = next_ts; - GST_BUFFER_DURATION (buf) = dur_ts - next_ts; - if (stream->strh->type == GST_RIFF_FCC_vids) { - GST_BUFFER_OFFSET (buf) = stream->current_entry - 1; - GST_BUFFER_OFFSET_END (buf) = stream->current_entry; - } else { - GST_BUFFER_OFFSET (buf) = GST_BUFFER_OFFSET_NONE; - GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE; - } - - gst_buffer_set_caps (buf, GST_PAD_CAPS (stream->pad)); - GST_DEBUG_OBJECT (avi, - "Pushing buffer with time=%" GST_TIME_FORMAT ", duration %" - GST_TIME_FORMAT ", offset %" G_GUINT64_FORMAT - " and size %d over pad %s", GST_TIME_ARGS (next_ts), - GST_TIME_ARGS (GST_BUFFER_DURATION (buf)), - GST_BUFFER_OFFSET (buf), size, GST_PAD_NAME (stream->pad)); - - /* mark discont when pending */ - if (G_UNLIKELY (stream->discont)) { - GST_DEBUG_OBJECT (avi, "Setting DISCONT"); - GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT); - stream->discont = FALSE; - } - res = gst_pad_push (stream->pad, buf); - buf = NULL; - - /* combine flows */ - res = gst_avi_demux_combine_flows (avi, stream, res); - if (G_UNLIKELY (res != GST_FLOW_OK)) { - GST_DEBUG ("Push failed; %s", gst_flow_get_name (res)); - return res; - } - } - } - } - } - -done: - return res; - - /* ERRORS */ -wrong_format: - { - GST_DEBUG_OBJECT (avi, "format %s != GST_FORMAT_TIME", - gst_format_get_name (format)); - res = GST_FLOW_ERROR; - goto done; - } -} - -/* - * Send pending tags. - */ -static void -push_tag_lists (GstAviDemux * avi) -{ - guint i; - GstTagList *tags; - - if (!avi->got_tags) - return; - - GST_DEBUG_OBJECT (avi, "Pushing pending tag lists"); - - for (i = 0; i < avi->num_streams; i++) { - GstAviStream *stream = &avi->stream[i]; - GstPad *pad = stream->pad; - - tags = stream->taglist; - - if (pad && tags) { - GST_DEBUG_OBJECT (pad, "Tags: %" GST_PTR_FORMAT, tags); - - gst_element_found_tags_for_pad (GST_ELEMENT_CAST (avi), pad, tags); - stream->taglist = NULL; - } - } - - if (!(tags = avi->globaltags)) - tags = gst_tag_list_new (); - - gst_tag_list_add (tags, GST_TAG_MERGE_REPLACE, - GST_TAG_CONTAINER_FORMAT, "AVI", NULL); - - GST_DEBUG_OBJECT (avi, "Global tags: %" GST_PTR_FORMAT, tags); - gst_element_found_tags (GST_ELEMENT_CAST (avi), tags); - avi->globaltags = NULL; - avi->got_tags = FALSE; -} - -static void -gst_avi_demux_loop (GstPad * pad) -{ - GstFlowReturn res; - GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad)); - - switch (avi->state) { - case GST_AVI_DEMUX_START: - res = gst_avi_demux_stream_init_pull (avi); - if (G_UNLIKELY (res != GST_FLOW_OK)) { - GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res)); - goto pause; - } - avi->state = GST_AVI_DEMUX_HEADER; - /* fall-through */ - case GST_AVI_DEMUX_HEADER: - res = gst_avi_demux_stream_header_pull (avi); - if (G_UNLIKELY (res != GST_FLOW_OK)) { - GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res)); - goto pause; - } -#ifdef DIVX_DRM - /* Send tag to decoder, so decoder can knows that this is divx drm file */ - if (avi->drmContext) - gst_avi_demux_send_divx_tag (avi); -#endif - - avi->state = GST_AVI_DEMUX_MOVI; - break; - case GST_AVI_DEMUX_MOVI: - if (G_UNLIKELY (avi->close_seg_event)) { - gst_avi_demux_push_event (avi, avi->close_seg_event); - avi->close_seg_event = NULL; - } - if (G_UNLIKELY (avi->seg_event)) { - gst_avi_demux_push_event (avi, avi->seg_event); - avi->seg_event = NULL; - } - if (G_UNLIKELY (avi->got_tags)) { - push_tag_lists (avi); - } - /* process each index entry in turn */ - res = gst_avi_demux_loop_data (avi); - -#ifdef AVIDEMUX_MODIFICATION - if (avi->segment.rate < 0.0 && res == GST_FLOW_UNEXPECTED) { - GST_DEBUG_OBJECT(avi, "Seeking to previous keyframe"); - res = gst_avidemux_seek_to_previous_keyframe (avi); - } -#endif - - /* pause when error */ - if (G_UNLIKELY (res != GST_FLOW_OK)) { - GST_INFO ("stream_movi flow: %s", gst_flow_get_name (res)); - goto pause; - } - break; - default: - GST_ERROR_OBJECT (avi, "unknown state %d", avi->state); - res = GST_FLOW_ERROR; - goto pause; - } - - return; - - /* ERRORS */ -pause:{ - - gboolean push_eos = FALSE; - GST_LOG_OBJECT (avi, "pausing task, reason %s", gst_flow_get_name (res)); - avi->segment_running = FALSE; - gst_pad_pause_task (avi->sinkpad); - - - if (res == GST_FLOW_UNEXPECTED) { - /* handle end-of-stream/segment */ - if (avi->segment.flags & GST_SEEK_FLAG_SEGMENT) { - gint64 stop; - - if ((stop = avi->segment.stop) == -1) - stop = avi->segment.duration; - - GST_INFO_OBJECT (avi, "sending segment_done"); - -#ifdef AVIDEMUX_MODIFICATION - if (avi->segment.rate >= 0) { - /* Sending segment done at the end of segment */ - gst_element_post_message(GST_ELEMENT_CAST (avi), - gst_message_new_segment_done (GST_OBJECT_CAST (avi), GST_FORMAT_TIME, stop)); - } else { - /* Sending segment done at the start of segment */ - gst_element_post_message(GST_ELEMENT_CAST (avi), - gst_message_new_segment_done (GST_OBJECT_CAST (avi), GST_FORMAT_TIME, avi->segment.start)); - } -#else - gst_element_post_message - (GST_ELEMENT_CAST (avi), - gst_message_new_segment_done (GST_OBJECT_CAST (avi), - GST_FORMAT_TIME, stop)); -#endif - } else { - push_eos = TRUE; - } - } else if (res == GST_FLOW_NOT_LINKED || res < GST_FLOW_UNEXPECTED) { - /* for fatal errors we post an error message, wrong-state is - * not fatal because it happens due to flushes and only means - * that we should stop now. */ - GST_ELEMENT_ERROR (avi, STREAM, FAILED, - (_("Internal data stream error.")), - ("streaming stopped, reason %s", gst_flow_get_name (res))); - push_eos = TRUE; - } - if (push_eos) { - GST_INFO_OBJECT (avi, "sending eos"); - if (!gst_avi_demux_push_event (avi, gst_event_new_eos ()) && - (res == GST_FLOW_UNEXPECTED)) { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, - (NULL), ("got eos but no streams (yet)")); - } - } - } -} - - -static GstFlowReturn -gst_avi_demux_chain (GstPad * pad, GstBuffer * buf) -{ - GstFlowReturn res; - GstAviDemux *avi = GST_AVI_DEMUX (GST_PAD_PARENT (pad)); - gint i; - - if (GST_BUFFER_IS_DISCONT (buf)) { - GST_DEBUG_OBJECT (avi, "got DISCONT"); - gst_adapter_clear (avi->adapter); - /* mark all streams DISCONT */ - for (i = 0; i < avi->num_streams; i++) - avi->stream[i].discont = TRUE; - } - - GST_DEBUG ("Store %d bytes in adapter", GST_BUFFER_SIZE (buf)); - gst_adapter_push (avi->adapter, buf); - - switch (avi->state) { - case GST_AVI_DEMUX_START: - if ((res = gst_avi_demux_stream_init_push (avi)) != GST_FLOW_OK) { - GST_WARNING ("stream_init flow: %s", gst_flow_get_name (res)); - break; - } - break; - case GST_AVI_DEMUX_HEADER: - if ((res = gst_avi_demux_stream_header_push (avi)) != GST_FLOW_OK) { - GST_WARNING ("stream_header flow: %s", gst_flow_get_name (res)); - break; - } - break; - case GST_AVI_DEMUX_MOVI: - if (G_UNLIKELY (avi->close_seg_event)) { - gst_avi_demux_push_event (avi, avi->close_seg_event); - avi->close_seg_event = NULL; - } - if (G_UNLIKELY (avi->seg_event)) { - gst_avi_demux_push_event (avi, avi->seg_event); - avi->seg_event = NULL; - } - if (G_UNLIKELY (avi->got_tags)) { - push_tag_lists (avi); - } - res = gst_avi_demux_stream_data (avi); - break; - case GST_AVI_DEMUX_SEEK: - { - GstEvent *event; - - res = GST_FLOW_OK; - - /* obtain and parse indexes */ - if (avi->stream[0].indexes && !gst_avi_demux_read_subindexes_push (avi)) - /* seek in subindex read function failed */ - goto index_failed; - - if (!avi->stream[0].indexes && !avi->have_index - && avi->avih->flags & GST_RIFF_AVIH_HASINDEX) - gst_avi_demux_stream_index_push (avi); - - if (avi->have_index) { - /* use the indexes now to construct nice durations */ - gst_avi_demux_calculate_durations_from_index (avi); - } else { - /* still parsing indexes */ - break; - } - - GST_OBJECT_LOCK (avi); - event = avi->seek_event; - avi->seek_event = NULL; - GST_OBJECT_UNLOCK (avi); - - /* calculate and perform seek */ - if (!avi_demux_handle_seek_push (avi, avi->sinkpad, event)) - goto seek_failed; - - gst_event_unref (event); - avi->state = GST_AVI_DEMUX_MOVI; - break; - } - default: - GST_ELEMENT_ERROR (avi, STREAM, FAILED, (NULL), - ("Illegal internal state")); - res = GST_FLOW_ERROR; - break; - } - - GST_DEBUG_OBJECT (avi, "state: %d res:%s", avi->state, - gst_flow_get_name (res)); - - if (G_UNLIKELY (avi->abort_buffering)) - goto abort_buffering; - - return res; - - /* ERRORS */ -index_failed: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("failed to read indexes")); - return GST_FLOW_ERROR; - } -seek_failed: - { - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("push mode seek failed")); - return GST_FLOW_ERROR; - } -abort_buffering: - { - avi->abort_buffering = FALSE; - GST_ELEMENT_ERROR (avi, STREAM, DEMUX, (NULL), ("unhandled buffer size")); - return GST_FLOW_ERROR; - } -} - -static gboolean -gst_avi_demux_sink_activate (GstPad * sinkpad) -{ - if (gst_pad_check_pull_range (sinkpad)) { - GST_DEBUG ("going to pull mode"); - return gst_pad_activate_pull (sinkpad, TRUE); - } else { - GST_DEBUG ("going to push (streaming) mode"); - return gst_pad_activate_push (sinkpad, TRUE); - } -} - -static gboolean -gst_avi_demux_sink_activate_pull (GstPad * sinkpad, gboolean active) -{ - GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (sinkpad)); - - if (active) { - avi->segment_running = TRUE; - avi->streaming = FALSE; - return gst_pad_start_task (sinkpad, (GstTaskFunction) gst_avi_demux_loop, - sinkpad); - } else { - avi->segment_running = FALSE; - return gst_pad_stop_task (sinkpad); - } -} - -static gboolean -gst_avi_demux_activate_push (GstPad * pad, gboolean active) -{ - GstAviDemux *avi = GST_AVI_DEMUX (GST_OBJECT_PARENT (pad)); - - if (active) { - GST_DEBUG ("avi: activating push/chain function"); - avi->streaming = TRUE; -#if 0 - /* create index for some push based seeking if not provided */ - GST_OBJECT_LOCK (avi); - if (!avi->element_index) { - GST_DEBUG_OBJECT (avi, "creating index"); - avi->element_index = gst_index_factory_make ("memindex"); - } - GST_OBJECT_UNLOCK (avi); - /* object lock might be taken again */ - gst_index_get_writer_id (avi->element_index, GST_OBJECT_CAST (avi), - &avi->index_id); -#endif - } else { - GST_DEBUG ("avi: deactivating push/chain function"); - } - - return TRUE; -} - -static void -gst_avi_demux_set_index (GstElement * element, GstIndex * index) -{ - GstAviDemux *avi = GST_AVI_DEMUX (element); - - GST_OBJECT_LOCK (avi); - if (avi->element_index) - gst_object_unref (avi->element_index); - if (index) { - avi->element_index = gst_object_ref (index); - } else { - avi->element_index = NULL; - } - GST_OBJECT_UNLOCK (avi); - /* object lock might be taken again */ - if (index) - gst_index_get_writer_id (index, GST_OBJECT_CAST (element), &avi->index_id); - GST_DEBUG_OBJECT (avi, "Set index %" GST_PTR_FORMAT, avi->element_index); -} - -static GstIndex * -gst_avi_demux_get_index (GstElement * element) -{ - GstIndex *result = NULL; - GstAviDemux *avi = GST_AVI_DEMUX (element); - - GST_OBJECT_LOCK (avi); - if (avi->element_index) - result = gst_object_ref (avi->element_index); - GST_OBJECT_UNLOCK (avi); - - GST_DEBUG_OBJECT (avi, "Returning index %" GST_PTR_FORMAT, result); - - return result; -} - -static GstStateChangeReturn -gst_avi_demux_change_state (GstElement * element, GstStateChange transition) -{ - GstStateChangeReturn ret; - GstAviDemux *avi = GST_AVI_DEMUX (element); - - switch (transition) { - case GST_STATE_CHANGE_READY_TO_PAUSED: - avi->streaming = FALSE; - gst_segment_init (&avi->segment, GST_FORMAT_TIME); - break; - default: - break; - } - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - if (ret == GST_STATE_CHANGE_FAILURE) - goto done; - - switch (transition) { - case GST_STATE_CHANGE_PAUSED_TO_READY: - avi->have_index = FALSE; - gst_avi_demux_reset (avi); - break; - default: - break; - } - -done: - return ret; -} -#ifdef AVIDEMUX_MODIFICATION -/*Modification: Added function to find out the frame_type for index-table generation */ - -static int -gst_avi_demux_find_frame_type (GstAviStream *stream, GstBuffer *buf, int *frame_type) -{ - unsigned char *buff = NULL; - unsigned int buff_len = 0; - - if (!stream || !buf || !frame_type) { - GST_ERROR ("Invalid arguments.."); - return -1; - } - - buff = GST_BUFFER_DATA (buf); - buff_len = GST_BUFFER_SIZE (buf); - - if ((NULL == buff) || buff_len < 5) { - GST_ERROR ("Invalid buffer..."); - return -1; - } - - switch (stream->strh->fcc_handler) { - /* mpeg stream parsing case */ - case GST_MAKE_FOURCC ('X', 'V', 'I', 'D'): - case GST_MAKE_FOURCC ('x', 'v', 'i', 'd'): - case GST_MAKE_FOURCC ('D', 'X', '5', '0'): - case GST_MAKE_FOURCC ('d', 'i', 'v', 'x'): - case GST_MAKE_FOURCC ('D', 'I', 'V', 'X'): - case GST_MAKE_FOURCC ('B', 'L', 'Z', '0'): - case GST_MAKE_FOURCC ('F', 'M', 'P', '4'): - case GST_MAKE_FOURCC ('U', 'M', 'P', '4'): - case GST_MAKE_FOURCC ('F', 'F', 'D', 'S'): - case GST_MAKE_FOURCC ('M', 'P', 'E', 'G'): - case GST_MAKE_FOURCC ('M', 'P', 'G', 'I'): - case GST_MAKE_FOURCC ('m', 'p', 'g', '1'): - case GST_MAKE_FOURCC ('M', 'P', 'G', '1'): - case GST_MAKE_FOURCC ('P', 'I', 'M', '1'): - case GST_MAKE_FOURCC ('M', 'P', 'G', '2'): - case GST_MAKE_FOURCC ('m', 'p', 'g', '2'): - case GST_MAKE_FOURCC ('P', 'I', 'M', '2'): - case GST_MAKE_FOURCC ('D', 'V', 'R', ' '): { - int idx = 0; - gboolean found_vop_code = FALSE; - - for (idx=0; idx< (buff_len-4); idx++) { - /* Find VOP start frame which should be in every frame */ - if (buff[idx] == 0x00 && buff[idx+1] == 0x00 && buff[idx+2] == 0x01 && buff[idx+3] == 0xB6) { - GST_DEBUG ("Found VOP start code..."); - found_vop_code = TRUE; - break; - } - } - - if (!found_vop_code) { - GST_ERROR ("Invalid input stream : There isn't any VOP header"); - return -1; - } - - if ((buff[idx] == 0x00) && (buff[idx+1] == 0x00) && (buff[idx+2] == 0x01)) { - if(buff[idx+3] == 0xB6) { - switch (buff[idx+4] & 0xC0) { - case 0x00: - GST_DEBUG ("Found Key-Frame"); - *frame_type = GST_AVI_KEYFRAME; - break; - default: - GST_DEBUG ("Found Non-Key frame.. value = %x", buff[idx+4]); - *frame_type = GST_AVI_NON_KEYFRAME; - break; - } - } - } - } - break; - case GST_MAKE_FOURCC ('H', '2', '6', '3'): - case GST_MAKE_FOURCC ('h', '2', '6', '3'): - case GST_MAKE_FOURCC ('i', '2', '6', '3'): - case GST_MAKE_FOURCC ('U', '2', '6', '3'): - case GST_MAKE_FOURCC ('v', 'i', 'v', '1'): - case GST_MAKE_FOURCC ('T', '2', '6', '3'): { - /* FIXME: H263 Frame Parsing is yet to be done.*/ - *frame_type = GST_AVI_KEYFRAME; - } - break; - case GST_MAKE_FOURCC ('X', '2', '6', '4'): - case GST_MAKE_FOURCC ('x', '2', '6', '4'): - case GST_MAKE_FOURCC ('H', '2', '6', '4'): - case GST_MAKE_FOURCC ('h', '2', '6', '4'): - case GST_MAKE_FOURCC ('a', 'v', 'c', '1'): - case GST_MAKE_FOURCC ('A', 'V', 'C', '1'): { - gint idx = 0; - gint nalu_type = H264_NUT_UNKNOWN; - - /* H264 Frame Parsing */ - do { - if (buff[idx+0] == 0x00 && - buff[idx+1] == 0x00 && - ((buff [idx+2] == 0x01) || ((buff [idx+2] == 0x00) && (buff [idx+3] == 0x01)))) { - - if (buff [idx+2] == 0x01) { - nalu_type = buff[idx +3] & 0x1f; - } else if ((buff [idx+2] == 0x00) && (buff [idx+3] == 0x01)) { - nalu_type = buff[idx +4] & 0x1f; - idx++; - } - - if ((nalu_type == H264_NUT_SPS) || - (nalu_type == H264_NUT_PPS) || - (nalu_type == H264_NUT_SEI) || - (nalu_type == H264_NUT_AUD)) { - GST_LOG ("Skipping NALU SPS/PPS/SEI/AUD..."); - } else if (nalu_type == H264_NUT_IDR) { - GST_DEBUG ("Found KEY frame...\n"); - *frame_type = GST_AVI_KEYFRAME; - break; - } else if ((nalu_type == H264_NUT_SLICE) || - (nalu_type == H264_NUT_DPA) || - (nalu_type == H264_NUT_DPB) || - (nalu_type == H264_NUT_DPC) || - (nalu_type == H264_NUT_EOSEQ) || - (nalu_type == H264_NUT_EOSTREAM)) { - *frame_type = GST_AVI_NON_KEYFRAME; - break; - } else { - GST_DEBUG ("Unknown frame type, val = %d...", *frame_type); - *frame_type = GST_AVI_NON_KEYFRAME; - break; - } - } - idx++; - }while (idx < (buff_len - 4)); - } - break; - default: - //default make all frames as key frames - *frame_type = GST_AVI_KEYFRAME; - break; - } - - return 0; - -} - -static void gst_avidemux_forward_trickplay (GstAviDemux * avi, GstAviStream * stream, guint64 *timestamp) -{ - guint32 nsamples = 0; /* Number of samples between two consecutive keyframes */ - guint64 next_kindex_timestamp; - guint64 prev_kindex_timestamp; - - if (*timestamp < stream->trickplay_info->start_pos) { - GST_LOG_OBJECT (avi, "Received shown sample... not applying trickplay algo"); - return; - } - - if (stream->trickplay_info->next_kidx == 0) { - stream->trickplay_info->next_kidx = stream->trickplay_info->prev_kidx = stream->current_entry; - - /* while loop to handle multiple consecutive key frames */ - while(1) { - if((stream->trickplay_info->next_kidx +1)>=stream->idx_n) { - GST_DEBUG_OBJECT(avi,"eos"); - break; - } - - /* find previous key frame */ - stream->trickplay_info->next_kidx = gst_avi_demux_index_next(avi, stream, stream->trickplay_info->next_kidx +1, TRUE); - - /* based no.of sample between key frame and rate, drop frames */ - GST_DEBUG_OBJECT (avi, "current index :%d, next key index : %d", stream->current_entry, stream->trickplay_info->next_kidx); - - /* find no.of samples between present and previous key frames */ - nsamples = stream->trickplay_info->next_kidx - stream->trickplay_info->prev_kidx; - - /* find corresponding timestamps of present and previous keyframes */ - next_kindex_timestamp = avi_stream_convert_frames_to_time_unchecked (stream, stream->trickplay_info->next_kidx); - prev_kindex_timestamp = avi_stream_convert_frames_to_time_unchecked (stream, stream->trickplay_info->prev_kidx); - - /* find average duration between key frames */ - stream->trickplay_info->kidxs_dur_diff = (next_kindex_timestamp - prev_kindex_timestamp)/nsamples; - - stream->trickplay_info->show_samples = nsamples / avi->segment.rate; - - GST_DEBUG_OBJECT (avi, " duration between keyframes:%"GST_TIME_FORMAT, GST_TIME_ARGS(stream->trickplay_info->kidxs_dur_diff)); - - if(stream->trickplay_info->show_samples) { - GST_DEBUG_OBJECT (avi, "samples to display between two key frames = %d", - stream->trickplay_info->show_samples); - /* found no. of samples to show between key frames */ - *timestamp = avi_stream_convert_frames_to_time_unchecked (stream, stream->current_entry); - break; - } else if ((!stream->trickplay_info->show_samples) && - (stream->trickplay_info->next_kidx >= (stream->idx_n-1))){ - /* shown samples required to show between 2 key frames */ - stream->current_entry = stream->trickplay_info->next_kidx -1; /* next_kidx -1 is because advance_sample will increment */ - stream->trickplay_info->next_kidx = 0; - break; - } - } - stream->discont = TRUE; - } else { - stream->trickplay_info->show_samples--; - prev_kindex_timestamp = avi_stream_convert_frames_to_time_unchecked (stream, stream->trickplay_info->prev_kidx); - *timestamp = prev_kindex_timestamp + - (stream->current_entry - stream->trickplay_info->prev_kidx) * avi->segment.rate * stream->trickplay_info->kidxs_dur_diff; - - if (stream->trickplay_info->show_samples == 0) { - /* shown samples required to show between 2 key frames */ - GST_DEBUG_OBJECT (avi, "reached end of keyframe interval....Jumping to next key index = %d", stream->trickplay_info->next_kidx); - stream->current_entry= stream->trickplay_info->next_kidx -1; /* next_kidx -1 is because advance_sample will increment */ - stream->trickplay_info->next_kidx = 0; - stream->discont = TRUE; - } - } -} - -static void -gst_avidemux_backward_trickplay (GstAviDemux * avi, GstAviStream * stream, guint64 *timestamp) -{ - int index; - - /* backward trick play */ - GST_DEBUG_OBJECT (avi, "backward trickplay start"); - index = gst_avi_demux_index_for_time(avi,stream,avi->seek_kf_offset); - gst_avi_demux_move_stream (avi, stream, &avi->segment, index); -} - -static GstFlowReturn -gst_avidemux_seek_to_previous_keyframe (GstAviDemux *avi) -{ - guint index; - GstAviStream *stream; - GstClockTime seek_time; - int i; - guint64 time_position; - guint64 duration; - gdouble minusone = -1; - - - /* FIXME, this code assumes the main stream with keyframes is stream 0, - * which is mostly correct... */ - stream = &avi->stream[avi->main_stream]; - - if(stream->current_entry <= stream->start_entry) { - /* Video stream reached start of the clip. So stop seeking to previous and send newsegment - from _loop function, so that normal playback resumes*/ - goto eos; - } - - index = stream->current_entry; - time_position = avi_stream_convert_frames_to_time_unchecked (stream, index); - duration= stream->current_ts_end - time_position; - - if((time_position - (minusone *avi->segment.rate)*duration)>0) - time_position -= (minusone *avi->segment.rate)*duration; - else - time_position=0; - - avi->seek_kf_offset = time_position; - - GST_DEBUG_OBJECT (avi, " seek_kf_offset after:%"GST_TIME_FORMAT, GST_TIME_ARGS(avi->seek_kf_offset)); - - index = gst_avi_demux_index_for_time(avi,stream,time_position); - - index = gst_avi_demux_index_prev (avi, stream, index, TRUE); - - gst_avi_demux_move_stream (avi, stream, &avi->segment, index); - - seek_time = avi_stream_convert_frames_to_time_unchecked (stream, index); - GST_DEBUG_OBJECT (avi, " seek_time is :%"GST_TIME_FORMAT, GST_TIME_ARGS(seek_time)); - - - stream->last_flow = GST_FLOW_OK; - stream->discont = TRUE; - - /* Aligning other stream */ - for (i = 0; i < avi->num_streams; i++) { - GstAviStream *ostream; - - ostream = &avi->stream[i]; - if ((ostream == stream) || (ostream->index == NULL)) - continue; - - /* get the entry index for the requested position */ - index = gst_avi_demux_index_for_time (avi, ostream, seek_time); - - gst_avi_demux_move_stream (avi, ostream, &avi->segment, index); - - ostream->last_flow = GST_FLOW_OK; - ostream->discont = TRUE; - } - return GST_FLOW_OK; -eos: - return GST_FLOW_UNEXPECTED; - -} - -#endif - |