diff options
Diffstat (limited to 'gst/wavenc')
| -rw-r--r-- | gst/wavenc/Makefile.am | 28 | ||||
| -rw-r--r-- | gst/wavenc/Makefile.in | 825 | ||||
| -rw-r--r-- | gst/wavenc/gstwavenc.c | 748 | ||||
| -rw-r--r-- | gst/wavenc/gstwavenc.h | 68 |
4 files changed, 1669 insertions, 0 deletions
diff --git a/gst/wavenc/Makefile.am b/gst/wavenc/Makefile.am new file mode 100644 index 0000000..a213b00 --- /dev/null +++ b/gst/wavenc/Makefile.am @@ -0,0 +1,28 @@ +plugin_LTLIBRARIES = libgstwavenc.la + +libgstwavenc_la_SOURCES = gstwavenc.c +libgstwavenc_la_CFLAGS = \ + $(GST_PLUGINS_BASE_CFLAGS) \ + $(GST_CFLAGS) +libgstwavenc_la_LIBADD = \ + $(GST_PLUGINS_BASE_LIBS) \ + -lgstriff-@GST_MAJORMINOR@ \ + $(GST_LIBS) +libgstwavenc_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) +libgstwavenc_la_LIBTOOLFLAGS = --tag=disable-static + +noinst_HEADERS = gstwavenc.h + +Android.mk: Makefile.am $(BUILT_SOURCES) + androgenizer \ + -:PROJECT libgstwavenc -:SHARED libgstwavenc \ + -:TAGS eng debug \ + -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \ + -:SOURCES $(libgstwavenc_la_SOURCES) \ + -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstwavenc_la_CFLAGS) \ + -:LDFLAGS $(libgstwavenc_la_LDFLAGS) \ + $(libgstwavenc_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + > $@ diff --git a/gst/wavenc/Makefile.in b/gst/wavenc/Makefile.in new file mode 100644 index 0000000..f962384 --- /dev/null +++ b/gst/wavenc/Makefile.in @@ -0,0 +1,825 @@ +# Makefile.in generated by automake 1.11.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, +# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, +# Inc. +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + + +VPATH = @srcdir@ +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ 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mostlyclean-libtool pdf pdf-am ps ps-am \ + tags uninstall uninstall-am uninstall-pluginLTLIBRARIES + + +Android.mk: Makefile.am $(BUILT_SOURCES) + androgenizer \ + -:PROJECT libgstwavenc -:SHARED libgstwavenc \ + -:TAGS eng debug \ + -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \ + -:SOURCES $(libgstwavenc_la_SOURCES) \ + -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstwavenc_la_CFLAGS) \ + -:LDFLAGS $(libgstwavenc_la_LDFLAGS) \ + $(libgstwavenc_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + > $@ + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/gst/wavenc/gstwavenc.c b/gst/wavenc/gstwavenc.c new file mode 100644 index 0000000..c3b0c57 --- /dev/null +++ b/gst/wavenc/gstwavenc.c @@ -0,0 +1,748 @@ +/* -*- mOde: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */ +/* GStreamer .wav encoder + * Copyright (C) <2002> Iain Holmes <iain@prettypeople.org> + * Copyright (C) <2006> Tim-Philipp Müller <tim centricular net> + * + * 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. + * + */ +/** + * SECTION:element-wavenc + * + * Format a audio stream into the wav format. + * + */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> +#include "gstwavenc.h" + +#include <gst/riff/riff-media.h> + +GST_DEBUG_CATEGORY_STATIC (wavenc_debug); +#define GST_CAT_DEFAULT wavenc_debug + +struct riff_struct +{ + guint8 id[4]; /* RIFF */ + guint32 len; + guint8 wav_id[4]; /* WAVE */ +}; + +struct chunk_struct +{ + guint8 id[4]; + guint32 len; +}; + +struct common_struct +{ + guint16 wFormatTag; + guint16 wChannels; + guint32 dwSamplesPerSec; + guint32 dwAvgBytesPerSec; + guint16 wBlockAlign; + guint16 wBitsPerSample; /* Only for PCM */ +}; + +struct wave_header +{ + struct riff_struct riff; + struct chunk_struct format; + struct common_struct common; + struct chunk_struct data; +}; + +/* FIXME: mono doesn't produce correct files it seems, at least mplayer xruns */ +/* Max. of two channels, more channels need WAVFORMATEX with + * channel layout, which we do not support yet */ +#define SINK_CAPS \ + "audio/x-raw-int, " \ + "rate = (int) [ 1, MAX ], " \ + "channels = (int) [ 1, 2 ], " \ + "endianness = (int) LITTLE_ENDIAN, " \ + "width = (int) 32, " \ + "depth = (int) 32, " \ + "signed = (boolean) true" \ + "; " \ + "audio/x-raw-int, " \ + "rate = (int) [ 1, MAX ], " \ + "channels = (int) [ 1, 2 ], " \ + "endianness = (int) LITTLE_ENDIAN, " \ + "width = (int) 24, " \ + "depth = (int) 24, " \ + "signed = (boolean) true" \ + "; " \ + "audio/x-raw-int, " \ + "rate = (int) [ 1, MAX ], " \ + "channels = (int) [ 1, 2 ], " \ + "endianness = (int) LITTLE_ENDIAN, " \ + "width = (int) 16, " \ + "depth = (int) 16, " \ + "signed = (boolean) true" \ + "; " \ + "audio/x-raw-int, " \ + "rate = (int) [ 1, MAX ], " \ + "channels = (int) [ 1, 2 ], " \ + "width = (int) 8, " \ + "depth = (int) 8, " \ + "signed = (boolean) false" \ + "; " \ + "audio/x-raw-float, " \ + "rate = (int) [ 1, MAX ], " \ + "channels = (int) [ 1, 2 ], " \ + "endianness = (int) LITTLE_ENDIAN, " \ + "width = (int) { 32, 64 }; " \ + "audio/x-alaw, " \ + "rate = (int) [ 8000, 192000 ], " \ + "channels = (int) [ 1, 2 ], " \ + "width = (int) 8, " \ + "depth = (int) 8, " \ + "signed = (boolean) false; " \ + "audio/x-mulaw, " \ + "rate = (int) [ 8000, 192000 ], " \ + "channels = (int) [ 1, 2 ], " \ + "width = (int) 8, " \ + "depth = (int) 8, " \ + "signed = (boolean) false" + + +static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS (SINK_CAPS) + ); + +static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-wav") + ); + +GST_BOILERPLATE (GstWavEnc, gst_wavenc, GstElement, GST_TYPE_ELEMENT); + +static GstFlowReturn gst_wavenc_chain (GstPad * pad, GstBuffer * buf); +static gboolean gst_wavenc_event (GstPad * pad, GstEvent * event); +static GstStateChangeReturn gst_wavenc_change_state (GstElement * element, + GstStateChange transition); +static gboolean gst_wavenc_sink_setcaps (GstPad * pad, GstCaps * caps); + +static void +gst_wavenc_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + + gst_element_class_set_details_simple (element_class, "WAV audio muxer", + "Codec/Muxer/Audio", + "Encode raw audio into WAV", "Iain Holmes <iain@prettypeople.org>"); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&src_factory)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&sink_factory)); + + GST_DEBUG_CATEGORY_INIT (wavenc_debug, "wavenc", 0, "WAV encoder element"); +} + +static void +gst_wavenc_class_init (GstWavEncClass * klass) +{ + GstElementClass *element_class; + + element_class = (GstElementClass *) klass; + + element_class->change_state = GST_DEBUG_FUNCPTR (gst_wavenc_change_state); +} + +static void +gst_wavenc_init (GstWavEnc * wavenc, GstWavEncClass * klass) +{ + wavenc->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink"); + gst_pad_set_chain_function (wavenc->sinkpad, + GST_DEBUG_FUNCPTR (gst_wavenc_chain)); + gst_pad_set_event_function (wavenc->sinkpad, + GST_DEBUG_FUNCPTR (gst_wavenc_event)); + gst_pad_set_setcaps_function (wavenc->sinkpad, + GST_DEBUG_FUNCPTR (gst_wavenc_sink_setcaps)); + gst_element_add_pad (GST_ELEMENT (wavenc), wavenc->sinkpad); + + wavenc->srcpad = gst_pad_new_from_static_template (&src_factory, "src"); + gst_pad_use_fixed_caps (wavenc->srcpad); + gst_pad_set_caps (wavenc->srcpad, + gst_static_pad_template_get_caps (&src_factory)); + gst_element_add_pad (GST_ELEMENT (wavenc), wavenc->srcpad); +} + +#define WAV_HEADER_LEN 44 + +static GstBuffer * +gst_wavenc_create_header_buf (GstWavEnc * wavenc, guint audio_data_size) +{ + struct wave_header wave; + GstBuffer *buf; + guint8 *header; + + buf = gst_buffer_new_and_alloc (WAV_HEADER_LEN); + header = GST_BUFFER_DATA (buf); + memset (header, 0, WAV_HEADER_LEN); + + wave.common.wChannels = wavenc->channels; + wave.common.wBitsPerSample = wavenc->width; + wave.common.dwSamplesPerSec = wavenc->rate; + + /* Fill out our wav-header with some information */ + memcpy (wave.riff.id, "RIFF", 4); + wave.riff.len = audio_data_size + WAV_HEADER_LEN - 8; + memcpy (wave.riff.wav_id, "WAVE", 4); + + memcpy (wave.format.id, "fmt ", 4); + wave.format.len = 16; + + wave.common.wFormatTag = wavenc->format; + wave.common.wBlockAlign = (wavenc->width / 8) * wave.common.wChannels; + wave.common.dwAvgBytesPerSec = + wave.common.wBlockAlign * wave.common.dwSamplesPerSec; + + memcpy (wave.data.id, "data", 4); + wave.data.len = audio_data_size; + + memcpy (header, (char *) wave.riff.id, 4); + GST_WRITE_UINT32_LE (header + 4, wave.riff.len); + memcpy (header + 8, (char *) wave.riff.wav_id, 4); + memcpy (header + 12, (char *) wave.format.id, 4); + GST_WRITE_UINT32_LE (header + 16, wave.format.len); + GST_WRITE_UINT16_LE (header + 20, wave.common.wFormatTag); + GST_WRITE_UINT16_LE (header + 22, wave.common.wChannels); + GST_WRITE_UINT32_LE (header + 24, wave.common.dwSamplesPerSec); + GST_WRITE_UINT32_LE (header + 28, wave.common.dwAvgBytesPerSec); + GST_WRITE_UINT16_LE (header + 32, wave.common.wBlockAlign); + GST_WRITE_UINT16_LE (header + 34, wave.common.wBitsPerSample); + memcpy (header + 36, (char *) wave.data.id, 4); + GST_WRITE_UINT32_LE (header + 40, wave.data.len); + + gst_buffer_set_caps (buf, GST_PAD_CAPS (wavenc->srcpad)); + + return buf; +} + +static GstFlowReturn +gst_wavenc_push_header (GstWavEnc * wavenc, guint audio_data_size) +{ + GstFlowReturn ret; + GstBuffer *outbuf; + + /* seek to beginning of file */ + gst_pad_push_event (wavenc->srcpad, + gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_BYTES, 0, -1, 0)); + + GST_DEBUG_OBJECT (wavenc, "writing header with datasize=%u", audio_data_size); + + outbuf = gst_wavenc_create_header_buf (wavenc, audio_data_size); + GST_BUFFER_OFFSET (outbuf) = 0; + + ret = gst_pad_push (wavenc->srcpad, outbuf); + + if (ret != GST_FLOW_OK) { + GST_WARNING_OBJECT (wavenc, "push header failed: flow = %s", + gst_flow_get_name (ret)); + } + + return ret; +} + +static gboolean +gst_wavenc_sink_setcaps (GstPad * pad, GstCaps * caps) +{ + GstWavEnc *wavenc; + GstStructure *structure; + const gchar *name; + gint chans, rate, width; + + wavenc = GST_WAVENC (gst_pad_get_parent (pad)); + + if (wavenc->sent_header) { + GST_WARNING_OBJECT (wavenc, "cannot change format in middle of stream"); + goto fail; + } + + GST_DEBUG_OBJECT (wavenc, "got caps: %" GST_PTR_FORMAT, caps); + + structure = gst_caps_get_structure (caps, 0); + name = gst_structure_get_name (structure); + + if (!gst_structure_get_int (structure, "channels", &chans) || + !gst_structure_get_int (structure, "rate", &rate)) { + GST_WARNING_OBJECT (wavenc, "caps incomplete"); + goto fail; + } + + if (strcmp (name, "audio/x-raw-int") == 0) { + if (!gst_structure_get_int (structure, "width", &width)) { + GST_WARNING_OBJECT (wavenc, "caps incomplete"); + goto fail; + } + wavenc->format = GST_RIFF_WAVE_FORMAT_PCM; + wavenc->width = width; + } else if (strcmp (name, "audio/x-raw-float") == 0) { + if (!gst_structure_get_int (structure, "width", &width)) { + GST_WARNING_OBJECT (wavenc, "caps incomplete"); + goto fail; + } + wavenc->format = GST_RIFF_WAVE_FORMAT_IEEE_FLOAT; + wavenc->width = width; + } else if (strcmp (name, "audio/x-alaw") == 0) { + wavenc->format = GST_RIFF_WAVE_FORMAT_ALAW; + wavenc->width = 8; + } else if (strcmp (name, "audio/x-mulaw") == 0) { + wavenc->format = GST_RIFF_WAVE_FORMAT_MULAW; + wavenc->width = 8; + } else { + GST_WARNING_OBJECT (wavenc, "Unsupported format %s", name); + goto fail; + } + + wavenc->channels = chans; + wavenc->rate = rate; + + GST_LOG_OBJECT (wavenc, + "accepted caps: format=0x%04x chans=%u width=%u rate=%u", + wavenc->format, wavenc->channels, wavenc->width, wavenc->rate); + + gst_object_unref (wavenc); + return TRUE; + +fail: + gst_object_unref (wavenc); + return FALSE; +} + +#if 0 +static struct _maps +{ + const guint32 id; + const gchar *name; +} maps[] = { + { + GST_RIFF_INFO_IARL, "Location"}, { + GST_RIFF_INFO_IART, "Artist"}, { + GST_RIFF_INFO_ICMS, "Commissioner"}, { + GST_RIFF_INFO_ICMT, "Comment"}, { + GST_RIFF_INFO_ICOP, "Copyright"}, { + GST_RIFF_INFO_ICRD, "Creation Date"}, { + GST_RIFF_INFO_IENG, "Engineer"}, { + GST_RIFF_INFO_IGNR, "Genre"}, { + GST_RIFF_INFO_IKEY, "Keywords"}, { + GST_RIFF_INFO_INAM, "Title"}, { + GST_RIFF_INFO_IPRD, "Product"}, { + GST_RIFF_INFO_ISBJ, "Subject"}, { + GST_RIFF_INFO_ISFT, "Software"}, { + GST_RIFF_INFO_ITCH, "Technician"} +}; + +static guint32 +get_id_from_name (const char *name) +{ + int i; + + for (i = 0; i < G_N_ELEMENTS (maps); i++) { + if (strcasecmp (maps[i].name, name) == 0) { + return maps[i].id; + } + } + + return 0; +} + +static void +write_metadata (GstWavEnc * wavenc) +{ + GString *info_str; + GList *props; + int total = 4; + gboolean need_to_write = FALSE; + + info_str = g_string_new ("LIST INFO"); + + for (props = wavenc->metadata->properties->properties; props; + props = props->next) { + GstPropsEntry *entry = props->data; + const char *name; + guint32 id; + + name = gst_props_entry_get_name (entry); + id = get_id_from_name (name); + if (id != 0) { + const char *text; + char *tmp; + int len, req, i; + + need_to_write = TRUE; /* We've got at least one entry */ + + gst_props_entry_get_string (entry, &text); + len = strlen (text) + 1; /* The length in the file includes the \0 */ + + tmp = g_strdup_printf ("%" GST_FOURCC_FORMAT "%d%s", GST_FOURCC_ARGS (id), + GUINT32_TO_LE (len), text); + g_string_append (info_str, tmp); + g_free (tmp); + + /* Check that we end on an even boundary */ + req = ((len + 8) + 1) & ~1; + for (i = 0; i < req - len; i++) { + g_string_append_printf (info_str, "%c", 0); + } + + total += req; + } + } + + if (need_to_write) { + GstBuffer *buf; + + /* Now we've got all the strings together, we can write our length in */ + info_str->str[4] = GUINT32_TO_LE (total); + + buf = gst_buffer_new (); + gst_buffer_set_data (buf, info_str->str, info_str->len); + + gst_pad_push (wavenc->srcpad, GST_DATA (buf)); + g_string_free (info_str, FALSE); + } +} + +static void +write_cues (GstWavEnc * wavenc) +{ + GString *cue_string, *point_string; + GstBuffer *buf; + GList *cue_list, *c; + int num_cues, total = 4; + + if (gst_props_get (wavenc->metadata->properties, + "cues", &cue_list, NULL) == FALSE) { + /* No cues, move along please, nothing to see here */ + return; + } + + /* Space for 'cue ', chunk size and number of cuepoints */ + cue_string = g_string_new ("cue "); +#define CUEPOINT_SIZE 24 + point_string = g_string_sized_new (CUEPOINT_SIZE); + + for (c = cue_list, num_cues = 0; c; c = c->next, num_cues++) { + GstCaps *cue_caps = c->data; + guint32 pos; + + gst_props_get (cue_caps->properties, "position", &pos, NULL); + + point_string->str[0] = GUINT32_TO_LE (num_cues + 1); + point_string->str[4] = GUINT32_TO_LE (0); + /* Fixme: There is probably a macro for this */ + point_string->str[8] = 'd'; + point_string->str[9] = 'a'; + point_string->str[10] = 't'; + point_string->str[11] = 'a'; + point_string->str[12] = GUINT32_TO_LE (0); + point_string->str[16] = GUINT32_TO_LE (0); + point_string->str[20] = GUINT32_TO_LE (pos); + + total += CUEPOINT_SIZE; + } + + /* Set the length and chunk size */ + cue_string->str[4] = GUINT32_TO_LE (total); + cue_string->str[8] = GUINT32_TO_LE (num_cues); + /* Stick the cue points on the end */ + g_string_append (cue_string, point_string->str); + g_string_free (point_string, TRUE); + + buf = gst_buffer_new (); + gst_buffer_set_data (buf, cue_string->str, cue_string->len); + + gst_pad_push (wavenc->srcpad, GST_DATA (buf)); + g_string_free (cue_string, FALSE); +} + +static void +write_labels (GstWavEnc * wavenc) +{ + GstBuffer *buf; + GString *info_str; + int total = 4; + GList *caps; + + info_str = g_string_new ("LIST adtl"); + if (gst_props_get (wavenc->metadata->properties, "ltxts", &caps, NULL)) { + GList *p; + int i; + + for (p = caps, i = 1; p; p = p->next, i++) { + GstCaps *ltxt_caps = p->data; + GString *ltxt; + char *label = NULL; + int len, req, j; + + gst_props_get (ltxt_caps->properties, "name", &label, NULL); + len = strlen (label); + +#define LTXT_SIZE 28 + ltxt = g_string_new ("ltxt "); + ltxt->str[8] = GUINT32_TO_LE (i); /* Identifier */ + ltxt->str[12] = GUINT32_TO_LE (0); /* Sample Length */ + ltxt->str[16] = GUINT32_TO_LE (0); /* FIXME: Don't save the purpose yet */ + ltxt->str[20] = GUINT16_TO_LE (0); /* Country */ + ltxt->str[22] = GUINT16_TO_LE (0); /* Language */ + ltxt->str[24] = GUINT16_TO_LE (0); /* Dialect */ + ltxt->str[26] = GUINT16_TO_LE (0); /* Code Page */ + g_string_append (ltxt, label); + g_free (label); + + len += LTXT_SIZE; + + ltxt->str[4] = GUINT32_TO_LE (len); + + /* Check that we end on an even boundary */ + req = ((len + 8) + 1) & ~1; + for (j = 0; j < req - len; j++) { + g_string_append_printf (ltxt, "%c", 0); + } + + total += req; + + g_string_append (info_str, ltxt->str); + g_string_free (ltxt, TRUE); + } + } + + if (gst_props_get (wavenc->metadata->properties, "labels", &caps, NULL)) { + GList *p; + int i; + + for (p = caps, i = 1; p; p = p->next, i++) { + GstCaps *labl_caps = p->data; + GString *labl; + char *label = NULL; + int len, req, j; + + gst_props_get (labl_caps->properties, "name", &label, NULL); + len = strlen (label); + +#define LABL_SIZE 4 + labl = g_string_new ("labl "); + labl->str[8] = GUINT32_TO_LE (i); + g_string_append (labl, label); + g_free (label); + + len += LABL_SIZE; + + labl->str[4] = GUINT32_TO_LE (len); + + /* Check our size */ + req = ((len + 8) + 1) & ~1; + for (j = 0; j < req - len; j++) { + g_string_append_printf (labl, "%c", 0); + } + + total += req; + + g_string_append (info_str, labl->str); + g_string_free (labl, TRUE); + } + } + + if (gst_props_get (wavenc->metadata->properties, "notes", &caps, NULL)) { + GList *p; + int i; + + for (p = caps, i = 1; p; p = p->next, i++) { + GstCaps *note_caps = p->data; + GString *note; + char *label = NULL; + int len, req, j; + + gst_props_get (note_caps->properties, "name", &label, NULL); + len = strlen (label); + +#define NOTE_SIZE 4 + note = g_string_new ("note "); + note->str[8] = GUINT32_TO_LE (i); + g_string_append (note, label); + g_free (label); + + len += NOTE_SIZE; + + note->str[4] = GUINT32_TO_LE (len); + + /* Size check */ + req = ((len + 8) + 1) & ~1; + for (j = 0; j < req - len; j++) { + g_string_append_printf (note, "%c", 0); + } + + total += req; + + g_string_append (info_str, note->str); + g_string_free (note, TRUE); + } + } + + info_str->str[4] = GUINT32_TO_LE (total); + + buf = gst_buffer_new (); + gst_buffer_set_data (buf, info_str->str, info_str->len); + + gst_pad_push (wavenc->srcpad, GST_DATA (buf)); + g_string_free (info_str, FALSE); +} +#endif + +static gboolean +gst_wavenc_event (GstPad * pad, GstEvent * event) +{ + gboolean res = TRUE; + GstWavEnc *wavenc; + + wavenc = GST_WAVENC (gst_pad_get_parent (pad)); + + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_EOS:{ + GST_DEBUG_OBJECT (wavenc, "got EOS"); +#if 0 + /* Write our metadata if we have any */ + if (wavenc->metadata) { + write_metadata (wavenc); + write_cues (wavenc); + write_labels (wavenc); + } +#endif + /* write header with correct length values */ + gst_wavenc_push_header (wavenc, wavenc->length); + + /* we're done with this file */ + wavenc->finished_properly = TRUE; + + /* and forward the EOS event */ + res = gst_pad_event_default (pad, event); + break; + } + case GST_EVENT_NEWSEGMENT: + /* Just drop it, it's probably in TIME format + * anyway. We'll send our own newsegment event */ + gst_event_unref (event); + break; + default: + res = gst_pad_event_default (pad, event); + break; + } + + gst_object_unref (wavenc); + return res; +} + +static GstFlowReturn +gst_wavenc_chain (GstPad * pad, GstBuffer * buf) +{ + GstWavEnc *wavenc = GST_WAVENC (GST_PAD_PARENT (pad)); + GstFlowReturn flow = GST_FLOW_OK; + + g_return_val_if_fail (wavenc->channels > 0, GST_FLOW_WRONG_STATE); + + if (!wavenc->sent_header) { + /* use bogus size initially, we'll write the real + * header when we get EOS and know the exact length */ + flow = gst_wavenc_push_header (wavenc, 0x7FFF0000); + + /* starting a file, means we have to finish it properly */ + wavenc->finished_properly = FALSE; + + if (flow != GST_FLOW_OK) + return flow; + + GST_DEBUG_OBJECT (wavenc, "wrote dummy header"); + wavenc->sent_header = TRUE; + } + + GST_LOG_OBJECT (wavenc, "pushing %u bytes raw audio, ts=%" GST_TIME_FORMAT, + GST_BUFFER_SIZE (buf), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf))); + + buf = gst_buffer_make_metadata_writable (buf); + + gst_buffer_set_caps (buf, GST_PAD_CAPS (wavenc->srcpad)); + GST_BUFFER_OFFSET (buf) = WAV_HEADER_LEN + wavenc->length; + GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET_NONE; + + wavenc->length += GST_BUFFER_SIZE (buf); + + flow = gst_pad_push (wavenc->srcpad, buf); + + return flow; +} + +static GstStateChangeReturn +gst_wavenc_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; + GstWavEnc *wavenc = GST_WAVENC (element); + + switch (transition) { + case GST_STATE_CHANGE_NULL_TO_READY: + wavenc->format = 0; + wavenc->channels = 0; + wavenc->width = 0; + wavenc->rate = 0; + wavenc->length = 0; + wavenc->sent_header = FALSE; + /* its true because we haven't writen anything */ + wavenc->finished_properly = TRUE; + break; + default: + break; + } + + ret = parent_class->change_state (element, transition); + if (ret != GST_STATE_CHANGE_SUCCESS) + return ret; + + switch (transition) { + case GST_STATE_CHANGE_PAUSED_TO_READY: + if (!wavenc->finished_properly) { + GST_ELEMENT_WARNING (wavenc, STREAM, MUX, + ("Wav stream not finished properly"), + ("Wav stream not finished properly, no EOS received " + "before shutdown")); + } + break; + default: + break; + } + + return ret; +} + +static gboolean +plugin_init (GstPlugin * plugin) +{ + return gst_element_register (plugin, "wavenc", GST_RANK_PRIMARY, + GST_TYPE_WAVENC); +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "wavenc", + "Encode raw audio into WAV", + plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN) diff --git a/gst/wavenc/gstwavenc.h b/gst/wavenc/gstwavenc.h new file mode 100644 index 0000000..3fe167e --- /dev/null +++ b/gst/wavenc/gstwavenc.h @@ -0,0 +1,68 @@ +/* GStreamer + * Copyright (C) 2002, Iain Holmes <iain@prettypeople.org> + * + * 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. + */ + + +#ifndef __GST_WAV_ENC_H__ +#define __GST_WAV_ENC_H__ + + +#include <gst/gst.h> + +G_BEGIN_DECLS + +#define GST_TYPE_WAVENC \ + (gst_wavenc_get_type()) +#define GST_WAVENC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WAVENC,GstWavEnc)) +#define GST_WAVENC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_WAVENC,GstWavEncClass)) +#define GST_IS_WAVENC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WAVENC)) +#define GST_IS_WAVENC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WAVENC)) + +typedef struct _GstWavEnc GstWavEnc; +typedef struct _GstWavEncClass GstWavEncClass; + +struct _GstWavEnc { + GstElement element; + + GstPad *sinkpad; + GstPad *srcpad; + + /* useful audio data */ + guint16 format; + guint width; + guint rate; + guint channels; + guint32 length; + + gboolean sent_header; + gboolean finished_properly; +}; + +struct _GstWavEncClass { + GstElementClass parent_class; +}; + +GType gst_wavenc_get_type (void); + +G_END_DECLS + +#endif /* __GST_WAV_ENC_H__ */ |