mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-23 08:46:40 +00:00
Code Issues 1 Projects Releases Wiki Activity

gst/matroska/: Add support for muxing/demuxing theora video (#342448; too bad none of the usual linux players can act...

Browse source 
Original commit message from CVS:
* gst/matroska/matroska-demux.c: (gst_matroska_demux_add_stream),
(gst_matroska_demux_push_xiph_codec_priv_data),
(gst_matroska_demux_parse_blockgroup_or_simpleblock),
(gst_matroska_demux_video_caps), (gst_matroska_demux_audio_caps):
* gst/matroska/matroska-ids.h:
* gst/matroska/matroska-mux.c: (gst_matroska_mux_base_init),
(gst_matroska_mux_video_pad_setcaps),
(xiph3_streamheader_to_codecdata),
(vorbis_streamheader_to_codecdata),
(theora_streamheader_to_codecdata),
(gst_matroska_mux_audio_pad_setcaps),
(gst_matroska_mux_write_data):
Add support for muxing/demuxing theora video (#342448; too bad
none of the usual linux players can actually play this). Playback
in GStreamer will require additional changes to theoradec in -base.
Refactor streamheaders <=> CodecPrivateData code a bit; some small
cleanups.
This commit is contained in:
Tim-Philipp Müller 2006-05-23 13:44:11 +00:00
parent 3ba744c2aa
commit 4e012bac91
4 changed files with 272 additions and 146 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
ChangeLog
View file

@ -1,3 +1,23 @@
2006-05-23 Tim-Philipp Müller <tim at centricular dot net>
* gst/matroska/matroska-demux.c: (gst_matroska_demux_add_stream),
(gst_matroska_demux_push_xiph_codec_priv_data),
(gst_matroska_demux_parse_blockgroup_or_simpleblock),
(gst_matroska_demux_video_caps), (gst_matroska_demux_audio_caps):
* gst/matroska/matroska-ids.h:
* gst/matroska/matroska-mux.c: (gst_matroska_mux_base_init),
(gst_matroska_mux_video_pad_setcaps),
(xiph3_streamheader_to_codecdata),
(vorbis_streamheader_to_codecdata),
(theora_streamheader_to_codecdata),
(gst_matroska_mux_audio_pad_setcaps),
(gst_matroska_mux_write_data):
Add support for muxing/demuxing theora video (#342448; too bad
none of the usual linux players can actually play this). Playback
in GStreamer will require additional changes to theoradec in -base.
Refactor streamheaders <=> CodecPrivateData code a bit; some small
cleanups.
2006-05-22 Tim-Philipp Müller <tim at centricular dot net>
* ext/jpeg/gstjpegdec.c: (hresamplecpy1),

34
gst/matroska/matroska-demux.c
View file

@ -853,7 +853,6 @@ gst_matroska_demux_add_stream (GstMatroskaDemux * demux)
caps = gst_matroska_demux_audio_caps (audiocontext,
context->codec_id,
context->codec_priv, context->codec_priv_size, &codec);
audiocontext->first_frame = TRUE;
if (codec) {
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
@ -2024,18 +2023,7 @@ gst_matroska_demux_sync_streams (GstMatroskaDemux * demux)
}
static gboolean
gst_matroska_demux_stream_is_first_vorbis_frame (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream)
{
if (stream->type == GST_MATROSKA_TRACK_TYPE_AUDIO
&& ((GstMatroskaTrackAudioContext *) stream)->first_frame == TRUE) {
return (strcmp (stream->codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS) == 0);
}
return FALSE;
}
static gboolean
gst_matroska_demux_push_vorbis_codec_priv_data (GstMatroskaDemux * demux,
gst_matroska_demux_push_xiph_codec_priv_data (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream)
{
GstFlowReturn ret;
@ -2044,9 +2032,8 @@ gst_matroska_demux_push_vorbis_codec_priv_data (GstMatroskaDemux * demux,
guchar *p;
gint i;
/* start of the stream and vorbis audio, need to send the codec_priv
* data as first three packets */
((GstMatroskaTrackAudioContext *) stream)->first_frame = FALSE;
/* start of the stream and vorbis audio or theora video, need to
* send the codec_priv data as first three packets */
p = (guchar *) stream->codec_priv;
offset = 3;
@ -2292,9 +2279,11 @@ gst_matroska_demux_parse_blockgroup_or_simpleblock (GstMatroskaDemux * demux,
break;
}
if (gst_matroska_demux_stream_is_first_vorbis_frame (demux, stream)) {
if (!gst_matroska_demux_push_vorbis_codec_priv_data (demux, stream))
if (stream->send_xiph_headers) {
if (!gst_matroska_demux_push_xiph_codec_priv_data (demux, stream)) {
got_error = TRUE;
}
stream->send_xiph_headers = FALSE;
}
if (got_error)
@ -2962,6 +2951,8 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
g_assert (videocontext != NULL);
g_assert (codec_name != NULL);
context->send_xiph_headers = FALSE;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC)) {
gst_riff_strf_vids *vids = NULL;
@ -3107,6 +3098,9 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
caps = gst_caps_new_simple ("video/x-pn-realvideo",
"rmversion", G_TYPE_INT, rmversion, NULL);
*codec_name = g_strdup_printf ("RealVideo %d.0", rmversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_THEORA)) {
caps = gst_caps_new_simple ("video/x-theora", NULL);
context->send_xiph_headers = TRUE;
} else {
GST_WARNING ("Unknown codec '%s', cannot build Caps", codec_id);
return NULL;
@ -3232,11 +3226,14 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
audiocontext, const gchar * codec_id, gpointer data, guint size,
gchar ** codec_name)
{
GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) audiocontext;
GstCaps *caps = NULL;
g_assert (audiocontext != NULL);
g_assert (codec_name != NULL);
context->send_xiph_headers = FALSE;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3)) {
@ -3288,6 +3285,7 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
*codec_name = g_strdup ("DTS audio");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS)) {
caps = gst_caps_new_simple ("audio/x-vorbis", NULL);
context->send_xiph_headers = TRUE;
/* vorbis decoder does tags */
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_ACM)) {
gst_riff_strf_auds *auds = NULL;

15
gst/matroska/matroska-ids.h
View file

@ -144,6 +144,7 @@
#define GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2 "V_REAL/RV20"
#define GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3 "V_REAL/RV30"
#define GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4 "V_REAL/RV40"
#define GST_MATROSKA_CODEC_ID_VIDEO_THEORA "V_THEORA"
/* TODO: Quicktime */
#define GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1 "A_MPEG/L1"
@ -247,6 +248,15 @@ typedef struct _GstMatroskaTrackContext {
guint64 pos;
gboolean set_discont; /* TRUE = set DISCONT flag on next buffer */
/* Special flag for Vorbis and Theora, for which we need to send
* codec_priv first before sending any data, and just testing
* for time == 0 is not enough to detect that. Used by demuxer */
gboolean send_xiph_headers;
/* Special counter for muxer to skip the first N vorbis/theora headers -
* they are put into codec private data, not muxed into the stream */
guint xiph_headers_to_skip;
} GstMatroskaTrackContext;
typedef struct _GstMatroskaTrackVideoContext {
@ -263,11 +273,6 @@ typedef struct _GstMatroskaTrackAudioContext {
GstMatroskaTrackContext parent;
guint samplerate, channels, bitdepth;
/* Special flag for Vorbis, we need to send codec_priv first before
* sending any data, and just testing for time == 0 is not enough
* to detect that */
gboolean first_frame;
} GstMatroskaTrackAudioContext;
typedef struct _GstMatroskaTrackComplexContext {

349
gst/matroska/matroska-mux.c
View file

@ -33,18 +33,11 @@
GST_DEBUG_CATEGORY_STATIC (matroskamux_debug);
#define GST_CAT_DEFAULT matroskamux_debug
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_WRITING_APP,
ARG_MATROSKA_VERSION
/* FILL ME */
};
static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
@ -82,6 +75,7 @@ static GstStaticPadTemplate videosink_templ =
COMMON_VIDEO_CAPS "; "
"image/jpeg, "
COMMON_VIDEO_CAPS "; "
"video/x-theora; "
"video/x-raw-yuv, "
"format = (fourcc) { YUY2, I420 }, " COMMON_VIDEO_CAPS)
);
@ -127,15 +121,8 @@ GST_STATIC_PAD_TEMPLATE ("subtitle_%d",
static GArray *used_uids;
static void
_do_init (GType matroskamux_type)
{
GST_DEBUG_CATEGORY_INIT (matroskamux_debug, "matroskamux", 0,
"Matroska muxer");
}
GST_BOILERPLATE_FULL (GstMatroskaMux, gst_matroska_mux, GstElement,
GST_TYPE_ELEMENT, _do_init);
GST_BOILERPLATE (GstMatroskaMux, gst_matroska_mux, GstElement,
GST_TYPE_ELEMENT);
/* Matroska muxer destructor */
static void gst_matroska_mux_finalize (GObject * object);
@ -166,7 +153,10 @@ static void gst_matroska_mux_reset (GstElement * element);
/* uid generation */
static guint32 gst_matroska_mux_create_uid ();
/*static guint gst_matroska_mux_signals[LAST_SIGNAL] = { 0 };*/
static gboolean theora_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context);
static gboolean vorbis_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context);
static void
gst_matroska_mux_base_init (gpointer g_class)
@ -187,6 +177,9 @@ gst_matroska_mux_base_init (gpointer g_class)
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_templ));
gst_element_class_set_details (element_class, &gst_matroska_mux_details);
GST_DEBUG_CATEGORY_INIT (matroskamux_debug, "matroskamux", 0,
"Matroska muxer");
}
static void
@ -427,12 +420,15 @@ gst_matroska_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
{
GstMatroskaTrackContext *context = NULL;
GstMatroskaTrackVideoContext *videocontext;
GstMatroskaMux *mux;
GstMatroskaPad *collect_pad;
const gchar *mimetype;
gint width, height, pixel_width, pixel_height;
const GValue *framerate;
GstStructure *structure;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
@ -446,6 +442,11 @@ gst_matroska_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
mimetype = gst_structure_get_name (structure);
if (!strcmp (mimetype, "video/x-theora")) {
/* we'll extract the details later from the theora identification header */
goto skip_details;
}
/* get general properties */
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "height", &height);
@ -476,6 +477,8 @@ gst_matroska_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
videocontext->display_height = 0;
}
skip_details:
videocontext->asr_mode = GST_MATROSKA_ASPECT_RATIO_MODE_FREE;
videocontext->eye_mode = GST_MATROSKA_EYE_MODE_MONO;
videocontext->fourcc = 0;
@ -581,6 +584,24 @@ gst_matroska_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
context->codec_priv_size = priv_data_size;
}
return TRUE;
} else if (!strcmp (mimetype, "video/x-theora")) {
const GValue *streamheader;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_VIDEO_THEORA);
if (context->codec_priv != NULL) {
g_free (context->codec_priv);
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
streamheader = gst_structure_get_value (structure, "streamheader");
if (!theora_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("theora stream headers missing or malformed"));
return FALSE;
}
return TRUE;
} else if (!strcmp (mimetype, "video/mpeg")) {
gint mpegversion;
@ -610,6 +631,182 @@ gst_matroska_mux_video_pad_setcaps (GstPad * pad, GstCaps * caps)
return FALSE;
}
static gboolean
xiph3_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context, GstBuffer ** p_buf0)
{
GstBuffer *buf[3];
GArray *bufarr;
guint8 *priv_data;
guint i, offset, priv_data_size;
if (streamheader == NULL)
goto no_stream_headers;
if (G_VALUE_TYPE (streamheader) != GST_TYPE_ARRAY)
goto wrong_type;
bufarr = g_value_peek_pointer (streamheader);
if (bufarr->len != 3)
goto wrong_count;
context->xiph_headers_to_skip = bufarr->len;
for (i = 0; i < 3; i++) {
GValue *bufval = &g_array_index (bufarr, GValue, i);
if (G_VALUE_TYPE (bufval) != GST_TYPE_BUFFER)
goto wrong_content_type;
buf[i] = g_value_peek_pointer (bufval);
}
priv_data_size = 1;
priv_data_size += GST_BUFFER_SIZE (buf[0]) / 0xff + 1;
priv_data_size += GST_BUFFER_SIZE (buf[1]) / 0xff + 1;
for (i = 0; i < 3; ++i) {
priv_data_size += GST_BUFFER_SIZE (buf[i]);
}
priv_data = g_malloc0 (priv_data_size);
priv_data[0] = 2;
offset = 1;
for (i = 0; i < GST_BUFFER_SIZE (buf[0]) / 0xff; ++i) {
priv_data[offset++] = 0xff;
}
priv_data[offset++] = GST_BUFFER_SIZE (buf[0]) % 0xff;
for (i = 0; i < GST_BUFFER_SIZE (buf[1]) / 0xff; ++i) {
priv_data[offset++] = 0xff;
}
priv_data[offset++] = GST_BUFFER_SIZE (buf[1]) % 0xff;
for (i = 0; i < 3; ++i) {
memcpy (priv_data + offset, GST_BUFFER_DATA (buf[i]),
GST_BUFFER_SIZE (buf[i]));
offset += GST_BUFFER_SIZE (buf[i]);
}
context->codec_priv = priv_data;
context->codec_priv_size = priv_data_size;
if (p_buf0)
*p_buf0 = gst_buffer_ref (buf[0]);
return TRUE;
/* ERRORS */
no_stream_headers:
{
GST_WARNING ("required streamheaders missing in sink caps!");
return FALSE;
}
wrong_type:
{
GST_WARNING ("streamheaders are not a GST_TYPE_ARRAY, but a %s",
G_VALUE_TYPE_NAME (streamheader));
return FALSE;
}
wrong_count:
{
GST_WARNING ("got %u streamheaders, not 3 as expected", bufarr->len);
return FALSE;
}
wrong_content_type:
{
GST_WARNING ("streamheaders array does not contain GstBuffers");
return FALSE;
}
}
static gboolean
vorbis_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GstBuffer *buf0 = NULL;
if (!xiph3_streamheader_to_codecdata (streamheader, context, &buf0))
return FALSE;
if (buf0 == NULL || GST_BUFFER_SIZE (buf0) < 1 + 6 + 4) {
GST_WARNING ("First vorbis header too small, ignoring");
} else {
if (memcmp (GST_BUFFER_DATA (buf0) + 1, "vorbis", 6) == 0) {
GstMatroskaTrackAudioContext *audiocontext;
guint8 *hdr;
hdr = GST_BUFFER_DATA (buf0) + 1 + 6 + 4;
audiocontext = (GstMatroskaTrackAudioContext *) context;
audiocontext->channels = GST_READ_UINT8 (hdr);
audiocontext->samplerate = GST_READ_UINT32_LE (hdr + 1);
}
}
if (buf0)
gst_buffer_unref (buf0);
return TRUE;
}
static gboolean
theora_streamheader_to_codecdata (const GValue * streamheader,
GstMatroskaTrackContext * context)
{
GstBuffer *buf0 = NULL;
if (!xiph3_streamheader_to_codecdata (streamheader, context, &buf0))
return FALSE;
if (buf0 == NULL || GST_BUFFER_SIZE (buf0) < 1 + 6 + 26) {
GST_WARNING ("First theora header too small, ignoring");
} else if (memcmp (GST_BUFFER_DATA (buf0), "\200theora\003\002", 9) != 0) {
GST_WARNING ("First header not a theora identification header, ignoring");
} else {
GstMatroskaTrackVideoContext *videocontext;
guint fps_num, fps_denom, par_num, par_denom;
guint8 *hdr;
hdr = GST_BUFFER_DATA (buf0) + 1 + 6 + 3 + 2 + 2;
videocontext = (GstMatroskaTrackVideoContext *) context;
videocontext->pixel_width = GST_READ_UINT32_BE (hdr) >> 8;
videocontext->pixel_height = GST_READ_UINT32_BE (hdr + 3) >> 8;
hdr += 3 + 3 + 1 + 1;
fps_num = GST_READ_UINT32_BE (hdr);
fps_denom = GST_READ_UINT32_BE (hdr + 4);
context->default_duration = gst_util_uint64_scale_int (GST_SECOND,
fps_denom, fps_num);
hdr += 4 + 4;
par_num = GST_READ_UINT32_BE (hdr) >> 8;
par_denom = GST_READ_UINT32_BE (hdr + 3) >> 8;
if (par_num > 0 && par_num > 0) {
if (par_num > par_denom) {
videocontext->display_width =
videocontext->pixel_width * par_num / par_denom;
videocontext->display_height = videocontext->pixel_height;
} else if (par_num < par_denom) {
videocontext->display_width = videocontext->pixel_width;
videocontext->display_height =
videocontext->pixel_height * par_denom / par_num;
} else {
videocontext->display_width = 0;
videocontext->display_height = 0;
}
} else {
videocontext->display_width = 0;
videocontext->display_height = 0;
}
hdr += 3 + 3;
}
if (buf0)
gst_buffer_unref (buf0);
return TRUE;
}
/**
* gst_matroska_mux_audio_pad_setcaps:
@ -625,11 +822,14 @@ gst_matroska_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
{
GstMatroskaTrackContext *context = NULL;
GstMatroskaTrackAudioContext *audiocontext;
GstMatroskaMux *mux;
GstMatroskaPad *collect_pad;
const gchar *mimetype;
gint samplerate = 0, channels = 0;
GstStructure *structure;
mux = GST_MATROSKA_MUX (GST_PAD_PARENT (pad));
/* find context */
collect_pad = (GstMatroskaPad *) gst_pad_get_element_private (pad);
g_assert (collect_pad);
@ -716,8 +916,6 @@ gst_matroska_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
/* FIXME: endianness is undefined */
} else if (!strcmp (mimetype, "audio/x-vorbis")) {
const GValue *streamheader;
guint8 *priv_data = NULL;
guint priv_data_size = 0;
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_VORBIS);
@ -726,81 +924,14 @@ gst_matroska_mux_audio_pad_setcaps (GstPad * pad, GstCaps * caps)
context->codec_priv = NULL;
context->codec_priv_size = 0;
}
streamheader = gst_structure_get_value (structure, "streamheader");
if (streamheader != NULL) {
if (G_VALUE_TYPE (streamheader) == GST_TYPE_ARRAY) {
GArray *bufarr = g_value_peek_pointer (streamheader);
gint i;
gint offset;
if (bufarr->len == 3) {
GstBuffer *buf[3];
for (i = 0; i < bufarr->len; i++) {
GValue *bufval = &g_array_index (bufarr, GValue, i);
if (G_VALUE_TYPE (bufval) == GST_TYPE_BUFFER) {
buf[i] = g_value_peek_pointer (bufval);
}
}
priv_data_size = 1;
priv_data_size += GST_BUFFER_SIZE (buf[0]) / 0xff + 1;
priv_data_size += GST_BUFFER_SIZE (buf[1]) / 0xff + 1;
for (i = 0; i < 3; ++i) {
priv_data_size += GST_BUFFER_SIZE (buf[i]);
}
priv_data = g_malloc0 (priv_data_size);
priv_data[0] = 2;
offset = 1;
for (i = 0; i < GST_BUFFER_SIZE (buf[0]) / 0xff; ++i) {
priv_data[offset++] = 0xff;
}
priv_data[offset++] = GST_BUFFER_SIZE (buf[0]) % 0xff;
for (i = 0; i < GST_BUFFER_SIZE (buf[1]) / 0xff; ++i) {
priv_data[offset++] = 0xff;
}
priv_data[offset++] = GST_BUFFER_SIZE (buf[1]) % 0xff;
for (i = 0; i < 3; ++i) {
memcpy (priv_data + offset, GST_BUFFER_DATA (buf[i]),
GST_BUFFER_SIZE (buf[i]));
offset += GST_BUFFER_SIZE (buf[i]);
}
if (GST_BUFFER_SIZE (buf[0]) < 1 + 6 + 4) {
GST_WARNING ("First vorbis header too small, ignoring");
} else {
if (memcmp (GST_BUFFER_DATA (buf[0]) + 1, "vorbis", 6) == 0) {
guint8 *hdr = GST_BUFFER_DATA (buf[0]) + 1 + 6 + 4;
audiocontext->channels = GST_READ_UINT8 (hdr);
audiocontext->samplerate = GST_READ_UINT32_LE (hdr + 1);
}
}
} else {
GST_WARNING ("Vorbis header does not contain "
"three buffers (found %d buffers), Ignoring.", bufarr->len);
}
}
if (!vorbis_streamheader_to_codecdata (streamheader, context)) {
GST_ELEMENT_ERROR (mux, STREAM, MUX, (NULL),
("vorbis stream headers missing or malformed"));
return FALSE;
}
if (priv_data == NULL) {
GST_WARNING ("Could not write Vorbis header into codec private data. "
"You will probably not be able to play the stream.");
}
context->codec_priv_size = priv_data_size;
context->codec_priv = (gpointer) priv_data;
return TRUE;
} else if (!strcmp (mimetype, "audio/x-ac3")) {
context->codec_id = g_strdup (GST_MATROSKA_CODEC_ID_AUDIO_AC3);
@ -1304,35 +1435,6 @@ gst_matroska_mux_best_pad (GstMatroskaMux * mux, gboolean * popped)
return best;
}
static gboolean
gst_matroska_mux_stream_is_vorbis_header (GstMatroskaMux * mux,
GstMatroskaPad * collect_pad)
{
GstMatroskaTrackAudioContext *audio_ctx;
audio_ctx = (GstMatroskaTrackAudioContext *) collect_pad->track;
if (collect_pad->track->type != GST_MATROSKA_TRACK_TYPE_AUDIO)
return FALSE;
if (audio_ctx->first_frame != FALSE)
return FALSE;
if (collect_pad->track->codec_id == NULL ||
strcmp (collect_pad->track->codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS))
return FALSE;
/* HACK: three frame headers are counted using pos */
if (++collect_pad->track->pos <= 3)
return TRUE;
/* 4th vorbis packet => skipped all headers */
collect_pad->track->pos = 0;
audio_ctx->first_frame = TRUE;
return FALSE;
}
/**
* gst_matroska_mux_buffer_header:
* @track: Track context.
@ -1386,10 +1488,11 @@ gst_matroska_mux_write_data (GstMatroskaMux * mux, GstMatroskaPad * collect_pad)
buf = collect_pad->buffer;
collect_pad->buffer = NULL;
/* vorbis header are retrieved from caps and placed in CodecPrivate */
if (gst_matroska_mux_stream_is_vorbis_header (mux, collect_pad)) {
GST_LOG_OBJECT (collect_pad->collect.pad, "dropping vorbis header buffer");
/* vorbis/theora headers are retrieved from caps and put in CodecPrivate */
if (collect_pad->track->xiph_headers_to_skip > 0) {
GST_LOG_OBJECT (collect_pad->collect.pad, "dropping streamheader buffer");
gst_buffer_unref (buf);
--collect_pad->track->xiph_headers_to_skip;
return GST_FLOW_OK;
}