diff options
Diffstat (limited to 'wearable/gst/rtp/gstrtpgstdepay.c')
| -rw-r--r-- | wearable/gst/rtp/gstrtpgstdepay.c | 359 |
1 files changed, 0 insertions, 359 deletions
diff --git a/wearable/gst/rtp/gstrtpgstdepay.c b/wearable/gst/rtp/gstrtpgstdepay.c deleted file mode 100644 index b187db4..0000000 --- a/wearable/gst/rtp/gstrtpgstdepay.c +++ /dev/null @@ -1,359 +0,0 @@ -/* GStreamer - * Copyright (C) <2010> Wim Taymans <wim.taymans@gmail.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. - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include <gst/rtp/gstrtpbuffer.h> - -#include <string.h> -#include "gstrtpgstdepay.h" - -GST_DEBUG_CATEGORY_STATIC (rtpgstdepay_debug); -#define GST_CAT_DEFAULT (rtpgstdepay_debug) - -static GstStaticPadTemplate gst_rtp_gst_depay_src_template = -GST_STATIC_PAD_TEMPLATE ("src", - GST_PAD_SRC, - GST_PAD_ALWAYS, - GST_STATIC_CAPS_ANY); - -static GstStaticPadTemplate gst_rtp_gst_depay_sink_template = -GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("application/x-rtp, " - "media = (string) \"application\", " - "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", " - "clock-rate = (int) 90000, " "encoding-name = (string) \"X-GST\"") - ); - -GST_BOILERPLATE (GstRtpGSTDepay, gst_rtp_gst_depay, GstBaseRTPDepayload, - GST_TYPE_BASE_RTP_DEPAYLOAD); - -static void gst_rtp_gst_depay_finalize (GObject * object); - -static GstStateChangeReturn gst_rtp_gst_depay_change_state (GstElement * - element, GstStateChange transition); - -static void gst_rtp_gst_depay_reset (GstRtpGSTDepay * rtpgstdepay); -static gboolean gst_rtp_gst_depay_setcaps (GstBaseRTPDepayload * depayload, - GstCaps * caps); -static GstBuffer *gst_rtp_gst_depay_process (GstBaseRTPDepayload * depayload, - GstBuffer * buf); - -static void -gst_rtp_gst_depay_base_init (gpointer klass) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (klass); - - gst_element_class_add_static_pad_template (element_class, - &gst_rtp_gst_depay_src_template); - gst_element_class_add_static_pad_template (element_class, - &gst_rtp_gst_depay_sink_template); - - gst_element_class_set_details_simple (element_class, - "GStreamer depayloader", "Codec/Depayloader/Network", - "Extracts GStreamer buffers from RTP packets", - "Wim Taymans <wim.taymans@gmail.com>"); -} - -static void -gst_rtp_gst_depay_class_init (GstRtpGSTDepayClass * klass) -{ - GObjectClass *gobject_class; - GstElementClass *gstelement_class; - GstBaseRTPDepayloadClass *gstbasertpdepayload_class; - - gobject_class = (GObjectClass *) klass; - gstelement_class = (GstElementClass *) klass; - gstbasertpdepayload_class = (GstBaseRTPDepayloadClass *) klass; - - gobject_class->finalize = gst_rtp_gst_depay_finalize; - - gstelement_class->change_state = gst_rtp_gst_depay_change_state; - - gstbasertpdepayload_class->set_caps = gst_rtp_gst_depay_setcaps; - gstbasertpdepayload_class->process = gst_rtp_gst_depay_process; - - GST_DEBUG_CATEGORY_INIT (rtpgstdepay_debug, "rtpgstdepay", 0, - "Gstreamer RTP Depayloader"); -} - -static void -gst_rtp_gst_depay_init (GstRtpGSTDepay * rtpgstdepay, - GstRtpGSTDepayClass * klass) -{ - rtpgstdepay->adapter = gst_adapter_new (); -} - -static void -gst_rtp_gst_depay_finalize (GObject * object) -{ - GstRtpGSTDepay *rtpgstdepay; - - rtpgstdepay = GST_RTP_GST_DEPAY (object); - - gst_rtp_gst_depay_reset (rtpgstdepay); - g_object_unref (rtpgstdepay->adapter); - - G_OBJECT_CLASS (parent_class)->finalize (object); -} - -static void -store_cache (GstRtpGSTDepay * rtpgstdepay, guint CV, GstCaps * caps) -{ - if (rtpgstdepay->CV_cache[CV]) - gst_caps_unref (rtpgstdepay->CV_cache[CV]); - rtpgstdepay->CV_cache[CV] = caps; -} - -static void -gst_rtp_gst_depay_reset (GstRtpGSTDepay * rtpgstdepay) -{ - guint i; - - gst_adapter_clear (rtpgstdepay->adapter); - rtpgstdepay->current_CV = 0; - for (i = 0; i < 8; i++) - store_cache (rtpgstdepay, i, NULL); -} - -static gboolean -gst_rtp_gst_depay_setcaps (GstBaseRTPDepayload * depayload, GstCaps * caps) -{ - GstRtpGSTDepay *rtpgstdepay; - GstStructure *structure; - GstCaps *outcaps; - gint clock_rate; - gboolean res; - const gchar *capsenc; - gchar *capsstr; - - rtpgstdepay = GST_RTP_GST_DEPAY (depayload); - - structure = gst_caps_get_structure (caps, 0); - - if (!gst_structure_get_int (structure, "clock-rate", &clock_rate)) - clock_rate = 90000; - depayload->clock_rate = clock_rate; - - capsenc = gst_structure_get_string (structure, "caps"); - if (capsenc) { - gsize out_len; - - capsstr = (gchar *) g_base64_decode (capsenc, &out_len); - outcaps = gst_caps_from_string (capsstr); - g_free (capsstr); - - /* we have the SDP caps as output caps */ - rtpgstdepay->current_CV = 0; - gst_caps_ref (outcaps); - store_cache (rtpgstdepay, 0, outcaps); - } else { - outcaps = gst_caps_new_any (); - } - res = gst_pad_set_caps (depayload->srcpad, outcaps); - gst_caps_unref (outcaps); - - return res; -} - -static GstBuffer * -gst_rtp_gst_depay_process (GstBaseRTPDepayload * depayload, GstBuffer * buf) -{ - GstRtpGSTDepay *rtpgstdepay; - GstBuffer *subbuf, *outbuf = NULL; - gint payload_len; - guint8 *payload; - guint CV; - - rtpgstdepay = GST_RTP_GST_DEPAY (depayload); - - payload_len = gst_rtp_buffer_get_payload_len (buf); - - if (payload_len <= 8) - goto empty_packet; - - if (GST_BUFFER_IS_DISCONT (buf)) { - GST_WARNING_OBJECT (rtpgstdepay, "DISCONT, clear adapter"); - gst_adapter_clear (rtpgstdepay->adapter); - } - - payload = gst_rtp_buffer_get_payload (buf); - - /* strip off header - * - * 0 1 2 3 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * |C| CV |D|X|Y|Z| MBZ | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | Frag_offset | - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - */ - /* frag_offset = - * (payload[4] << 24) | (payload[5] << 16) | (payload[6] << 8) | payload[7]; - */ - - /* subbuffer skipping the 8 header bytes */ - subbuf = gst_rtp_buffer_get_payload_subbuffer (buf, 8, -1); - gst_adapter_push (rtpgstdepay->adapter, subbuf); - - if (gst_rtp_buffer_get_marker (buf)) { - guint avail; - GstCaps *outcaps; - - /* take the buffer */ - avail = gst_adapter_available (rtpgstdepay->adapter); - outbuf = gst_adapter_take_buffer (rtpgstdepay->adapter, avail); - - CV = (payload[0] >> 4) & 0x7; - - if (payload[0] & 0x80) { - guint b, csize, size, offset; - guint8 *data; - GstBuffer *subbuf; - - /* C bit, we have inline caps */ - data = GST_BUFFER_DATA (outbuf); - size = GST_BUFFER_SIZE (outbuf); - - /* start reading the length, we need this to skip to the data later */ - csize = offset = 0; - do { - if (offset >= size) - goto too_small; - b = data[offset++]; - csize = (csize << 7) | (b & 0x7f); - } while (b & 0x80); - - if (size < csize) - goto too_small; - - /* parse and store in cache */ - outcaps = gst_caps_from_string ((gchar *) & data[offset]); - store_cache (rtpgstdepay, CV, outcaps); - - /* skip caps */ - offset += csize; - size -= csize; - - GST_DEBUG_OBJECT (rtpgstdepay, - "inline caps %u, length %u, %" GST_PTR_FORMAT, CV, csize, outcaps); - - /* create real data buffer when needed */ - if (size) - subbuf = gst_buffer_create_sub (outbuf, offset, size); - else - subbuf = NULL; - - gst_buffer_unref (outbuf); - outbuf = subbuf; - } - - /* see what caps we need */ - if (CV != rtpgstdepay->current_CV) { - /* we need to switch caps, check if we have the caps */ - if ((outcaps = rtpgstdepay->CV_cache[CV]) == NULL) - goto missing_caps; - - GST_DEBUG_OBJECT (rtpgstdepay, - "need caps switch from %u to %u, %" GST_PTR_FORMAT, - rtpgstdepay->current_CV, CV, outcaps); - - /* and set caps */ - if (gst_pad_set_caps (depayload->srcpad, outcaps)) - rtpgstdepay->current_CV = CV; - } - - if (outbuf) { - if (payload[0] & 0x8) - GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DELTA_UNIT); - if (payload[0] & 0x4) - GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_MEDIA1); - if (payload[0] & 0x2) - GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_MEDIA2); - if (payload[0] & 0x1) - GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_MEDIA3); - } - } - return outbuf; - - /* ERRORS */ -empty_packet: - { - GST_ELEMENT_WARNING (rtpgstdepay, STREAM, DECODE, - ("Empty Payload."), (NULL)); - return NULL; - } -too_small: - { - GST_ELEMENT_WARNING (rtpgstdepay, STREAM, DECODE, - ("Buffer too small."), (NULL)); - if (outbuf) - gst_buffer_unref (outbuf); - return NULL; - } -missing_caps: - { - GST_ELEMENT_WARNING (rtpgstdepay, STREAM, DECODE, - ("Missing caps %u.", CV), (NULL)); - if (outbuf) - gst_buffer_unref (outbuf); - return NULL; - } -} - -static GstStateChangeReturn -gst_rtp_gst_depay_change_state (GstElement * element, GstStateChange transition) -{ - GstRtpGSTDepay *rtpgstdepay; - GstStateChangeReturn ret; - - rtpgstdepay = GST_RTP_GST_DEPAY (element); - - switch (transition) { - case GST_STATE_CHANGE_READY_TO_PAUSED: - gst_rtp_gst_depay_reset (rtpgstdepay); - break; - default: - break; - } - - ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); - - switch (transition) { - case GST_STATE_CHANGE_PAUSED_TO_READY: - gst_rtp_gst_depay_reset (rtpgstdepay); - break; - default: - break; - } - return ret; -} - - -gboolean -gst_rtp_gst_depay_plugin_init (GstPlugin * plugin) -{ - return gst_element_register (plugin, "rtpgstdepay", - GST_RANK_MARGINAL, GST_TYPE_RTP_GST_DEPAY); -} |