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gstreamer/gst/matroska/matroska-demux.c
Tim-Philipp Müller 62487ce3b5 gst/matroska/: Send tag event after newsegment event. 
Original commit message from CVS:
* gst/matroska/matroska-demux.c: (gst_matroska_demux_add_stream),
(gst_matroska_demux_send_event),
(gst_matroska_demux_loop_stream_parse_id):
* gst/matroska/matroska-ids.h:
Send tag event after newsegment event.
2006-06-29 11:41:55 +00:00

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/* GStreamer Matroska muxer/demuxer
* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Tim-Philipp Müller <tim centricular net>
*
* matroska-demux.c: matroska file/stream demuxer
*
* 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 <math.h>
#include <string.h>
/* For AVI compatibility mode... Who did that? */
/* and for fourcc stuff */
#include <gst/riff/riff-read.h>
#include <gst/riff/riff-ids.h>
#include <gst/riff/riff-media.h>
#include "matroska-demux.h"
#include "matroska-ids.h"
GST_DEBUG_CATEGORY_STATIC (matroskademux_debug);
#define GST_CAT_DEFAULT matroskademux_debug
enum
{
ARG_0,
ARG_METADATA,
ARG_STREAMINFO
};
static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-matroska")
);
static GstStaticPadTemplate audio_src_templ =
GST_STATIC_PAD_TEMPLATE ("audio_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("ANY")
);
static GstStaticPadTemplate video_src_templ =
GST_STATIC_PAD_TEMPLATE ("video_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("ANY")
);
static GstStaticPadTemplate subtitle_src_templ =
GST_STATIC_PAD_TEMPLATE ("subtitle_%02d",
GST_PAD_SRC,
GST_PAD_SOMETIMES,
GST_STATIC_CAPS ("text/plain; application/x-ssa; application/x-ass; "
"application/x-usf; application/x-subtitle-unknown")
);
static void gst_matroska_demux_base_init (GstMatroskaDemuxClass * klass);
static void gst_matroska_demux_class_init (GstMatroskaDemuxClass * klass);
static void gst_matroska_demux_init (GstMatroskaDemux * demux);
/* element functions */
static void gst_matroska_demux_loop (GstPad * pad);
static gboolean gst_matroska_demux_element_send_event (GstElement * element,
GstEvent * event);
/* pad functions */
static gboolean gst_matroska_demux_sink_activate_pull (GstPad * sinkpad,
gboolean active);
static gboolean gst_matroska_demux_sink_activate (GstPad * sinkpad);
static gboolean gst_matroska_demux_handle_seek_event (GstMatroskaDemux * demux,
GstEvent * event);
static gboolean gst_matroska_demux_handle_src_event (GstPad * pad,
GstEvent * event);
static const GstQueryType *gst_matroska_demux_get_src_query_types (GstPad *
pad);
static gboolean gst_matroska_demux_handle_src_query (GstPad * pad,
GstQuery * query);
static GstStateChangeReturn
gst_matroska_demux_change_state (GstElement * element,
GstStateChange transition);
/* caps functions */
static GstCaps *gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext
* videocontext,
const gchar * codec_id, gpointer data, guint size, gchar ** codec_name);
static GstCaps *gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext
* audiocontext,
const gchar * codec_id, gpointer data, guint size, gchar ** codec_name);
static GstCaps *gst_matroska_demux_complex_caps (GstMatroskaTrackComplexContext
* complexcontext, const gchar * codec_id, gpointer data, guint size);
static GstCaps
* gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
subtitlecontext, const gchar * codec_id, gpointer data, guint size);
/* stream methods */
static void gst_matroska_demux_reset (GstElement * element);
static GstEbmlReadClass *parent_class; /* NULL; */
static GType
gst_matroska_demux_get_type (void)
{
static GType gst_matroska_demux_type; /* 0 */
if (!gst_matroska_demux_type) {
static const GTypeInfo gst_matroska_demux_info = {
sizeof (GstMatroskaDemuxClass),
(GBaseInitFunc) gst_matroska_demux_base_init,
NULL,
(GClassInitFunc) gst_matroska_demux_class_init,
NULL,
NULL,
sizeof (GstMatroskaDemux),
0,
(GInstanceInitFunc) gst_matroska_demux_init,
};
gst_matroska_demux_type =
g_type_register_static (GST_TYPE_EBML_READ,
"GstMatroskaDemux", &gst_matroska_demux_info, 0);
}
return gst_matroska_demux_type;
}
static void
gst_matroska_demux_base_init (GstMatroskaDemuxClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
static const GstElementDetails gst_matroska_demux_details =
GST_ELEMENT_DETAILS ("Matroska demuxer",
"Codec/Demuxer",
"Demuxes a Matroska Stream into video/audio/subtitles",
"Ronald Bultje <rbultje@ronald.bitfreak.net>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&video_src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&audio_src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&subtitle_src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_templ));
gst_element_class_set_details (element_class, &gst_matroska_demux_details);
GST_DEBUG_CATEGORY_INIT (matroskademux_debug, "matroskademux", 0,
"Matroska demuxer");
}
static void
gst_matroska_demux_class_init (GstMatroskaDemuxClass * klass)
{
GstElementClass *gstelement_class;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_matroska_demux_change_state);
gstelement_class->send_event =
GST_DEBUG_FUNCPTR (gst_matroska_demux_element_send_event);
}
static void
gst_matroska_demux_init (GstMatroskaDemux * demux)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (demux);
gint i;
demux->sinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"sink"), "sink");
gst_pad_set_activate_function (demux->sinkpad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_sink_activate));
gst_pad_set_activatepull_function (demux->sinkpad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_sink_activate_pull));
gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
GST_EBML_READ (demux)->sinkpad = demux->sinkpad;
/* initial stream no. */
for (i = 0; i < GST_MATROSKA_DEMUX_MAX_STREAMS; i++) {
demux->src[i] = NULL;
}
demux->writing_app = NULL;
demux->muxing_app = NULL;
demux->index = NULL;
/* finish off */
gst_matroska_demux_reset (GST_ELEMENT (demux));
}
static void
gst_matroska_demux_reset (GstElement * element)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
guint i;
/* reset input */
demux->state = GST_MATROSKA_DEMUX_STATE_START;
/* clean up existing streams */
for (i = 0; i < GST_MATROSKA_DEMUX_MAX_STREAMS; i++) {
if (demux->src[i] != NULL) {
if (demux->src[i]->pad != NULL) {
gst_element_remove_pad (GST_ELEMENT (demux), demux->src[i]->pad);
}
gst_caps_replace (&demux->src[i]->caps, NULL);
g_free (demux->src[i]->codec_id);
g_free (demux->src[i]->codec_name);
g_free (demux->src[i]->name);
g_free (demux->src[i]->language);
g_free (demux->src[i]->codec_priv);
g_free (demux->src[i]);
demux->src[i] = NULL;
}
}
demux->num_streams = 0;
demux->num_a_streams = 0;
demux->num_t_streams = 0;
demux->num_v_streams = 0;
/* reset media info */
g_free (demux->writing_app);
demux->writing_app = NULL;
g_free (demux->muxing_app);
demux->muxing_app = NULL;
/* reset indexes */
demux->num_indexes = 0;
g_free (demux->index);
demux->index = NULL;
/* reset timers */
demux->clock = NULL;
demux->time_scale = 1000000;
demux->duration = 0;
demux->pos = 0;
demux->created = G_MININT64;
demux->metadata_parsed = FALSE;
demux->index_parsed = FALSE;
demux->segment_rate = 1.0;
demux->segment_start = GST_CLOCK_TIME_NONE;
demux->segment_stop = GST_CLOCK_TIME_NONE;
demux->segment_play = FALSE;
demux->seek_pending = FALSE;
}
static gint
gst_matroska_demux_stream_from_num (GstMatroskaDemux * demux, guint track_num)
{
guint n;
for (n = 0; n < demux->num_streams; n++) {
if (demux->src[n] != NULL && demux->src[n]->num == track_num) {
return n;
}
}
if (n == demux->num_streams) {
GST_WARNING ("Failed to find corresponding pad for tracknum %d", track_num);
}
return -1;
}
static gboolean
gst_matroska_demux_add_stream (GstMatroskaDemux * demux)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (demux);
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstMatroskaTrackContext *context;
GstPadTemplate *templ = NULL;
GstCaps *caps = NULL;
gchar *padname = NULL;
gboolean res = TRUE;
guint32 id;
GstTagList *list = NULL;
gchar *codec = NULL;
if (demux->num_streams >= GST_MATROSKA_DEMUX_MAX_STREAMS) {
GST_WARNING ("Maximum number of streams (%d) exceeded, skipping",
GST_MATROSKA_DEMUX_MAX_STREAMS);
return gst_ebml_read_skip (ebml); /* skip-and-continue */
}
/* allocate generic... if we know the type, we'll g_renew()
* with the precise type */
context = g_new0 (GstMatroskaTrackContext, 1);
demux->src[demux->num_streams] = context;
context->index = demux->num_streams;
context->type = 0; /* no type yet */
context->default_duration = 0;
context->pos = 0;
context->set_discont = TRUE;
demux->num_streams++;
/* start with the master */
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
/* try reading the trackentry headers */
while (res) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id)) {
res = FALSE;
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
/* track number (unique stream ID) */
case GST_MATROSKA_ID_TRACKNUMBER:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
context->num = num;
break;
}
/* track UID (unique identifier) */
case GST_MATROSKA_ID_TRACKUID:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
context->uid = num;
break;
}
/* track type (video, audio, combined, subtitle, etc.) */
case GST_MATROSKA_ID_TRACKTYPE:{
guint64 track_type;
if (!gst_ebml_read_uint (ebml, &id, &track_type)) {
res = FALSE;
break;
}
if (context->type != 0 && context->type != track_type) {
GST_WARNING
("More than one tracktype defined in a trackentry - skipping");
break;
}
/* ok, so we're actually going to reallocate this thing */
switch (track_type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:
gst_matroska_track_init_video_context (&context);
break;
case GST_MATROSKA_TRACK_TYPE_AUDIO:
gst_matroska_track_init_audio_context (&context);
break;
case GST_MATROSKA_TRACK_TYPE_COMPLEX:
gst_matroska_track_init_complex_context (&context);
break;
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:
gst_matroska_track_init_subtitle_context (&context);
break;
case GST_MATROSKA_TRACK_TYPE_LOGO:
case GST_MATROSKA_TRACK_TYPE_CONTROL:
default:
GST_WARNING ("Unknown or unsupported track type 0x%x", track_type);
context->type = 0;
break;
}
demux->src[demux->num_streams - 1] = context;
break;
}
/* tracktype specific stuff for video */
case GST_MATROSKA_ID_TRACKVIDEO:{
GstMatroskaTrackVideoContext *videocontext;
if (!gst_matroska_track_init_video_context (&context)) {
GST_WARNING
("trackvideo EBML entry in non-video track - ignoring track");
res = FALSE;
break;
} else if (!gst_ebml_read_master (ebml, &id)) {
res = FALSE;
break;
}
videocontext = (GstMatroskaTrackVideoContext *) context;
demux->src[demux->num_streams - 1] = context;
while (res) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id)) {
res = FALSE;
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
/* fixme, this should be one-up, but I get it here (?) */
case GST_MATROSKA_ID_TRACKDEFAULTDURATION:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
context->default_duration = num;
break;
}
/* video framerate */
case GST_MATROSKA_ID_VIDEOFRAMERATE:{
gdouble num;
if (!gst_ebml_read_float (ebml, &id, &num)) {
res = FALSE;
break;
}
context->default_duration = GST_SECOND * (1. / num);
break;
}
/* width of the size to display the video at */
case GST_MATROSKA_ID_VIDEODISPLAYWIDTH:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
videocontext->display_width = num;
GST_DEBUG ("display_width %" G_GUINT64_FORMAT, num);
break;
}
/* height of the size to display the video at */
case GST_MATROSKA_ID_VIDEODISPLAYHEIGHT:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
videocontext->display_height = num;
GST_DEBUG ("display_height %" G_GUINT64_FORMAT, num);
break;
}
/* width of the video in the file */
case GST_MATROSKA_ID_VIDEOPIXELWIDTH:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
videocontext->pixel_width = num;
GST_DEBUG ("pixel_width %" G_GUINT64_FORMAT, num);
break;
}
/* height of the video in the file */
case GST_MATROSKA_ID_VIDEOPIXELHEIGHT:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
videocontext->pixel_height = num;
GST_DEBUG ("pixel_height %" G_GUINT64_FORMAT, num);
break;
}
/* whether the video is interlaced */
case GST_MATROSKA_ID_VIDEOFLAGINTERLACED:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
if (num)
context->flags |= GST_MATROSKA_VIDEOTRACK_INTERLACED;
else
context->flags &= ~GST_MATROSKA_VIDEOTRACK_INTERLACED;
break;
}
/* stereo mode (whether the video has two streams, where
* one is for the left eye and the other for the right eye,
* which creates a 3D-like effect) */
case GST_MATROSKA_ID_VIDEOSTEREOMODE:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
if (num != GST_MATROSKA_EYE_MODE_MONO &&
num != GST_MATROSKA_EYE_MODE_LEFT &&
num != GST_MATROSKA_EYE_MODE_RIGHT &&
num != GST_MATROSKA_EYE_MODE_BOTH) {
GST_WARNING ("Unknown eye mode 0x%x - ignoring", (guint) num);
break;
}
videocontext->eye_mode = num;
break;
}
/* aspect ratio behaviour */
case GST_MATROSKA_ID_VIDEOASPECTRATIO:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
if (num != GST_MATROSKA_ASPECT_RATIO_MODE_FREE &&
num != GST_MATROSKA_ASPECT_RATIO_MODE_KEEP &&
num != GST_MATROSKA_ASPECT_RATIO_MODE_FIXED) {
GST_WARNING ("Unknown aspect ratio mode 0x%x - ignoring",
(guint) num);
break;
}
videocontext->asr_mode = num;
break;
}
/* colourspace (only matters for raw video) fourcc */
case GST_MATROSKA_ID_VIDEOCOLOURSPACE:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
videocontext->fourcc = num;
break;
}
default:
GST_WARNING ("Unknown video track header entry 0x%x - ignoring",
id);
/* pass-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
res = FALSE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
break;
}
/* tracktype specific stuff for audio */
case GST_MATROSKA_ID_TRACKAUDIO:{
GstMatroskaTrackAudioContext *audiocontext;
if (!gst_matroska_track_init_audio_context (&context)) {
GST_WARNING
("trackaudio EBML entry in non-audio track - ignoring track");
res = FALSE;
break;
} else if (!gst_ebml_read_master (ebml, &id)) {
res = FALSE;
break;
}
audiocontext = (GstMatroskaTrackAudioContext *) context;
demux->src[demux->num_streams - 1] = context;
while (res) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id)) {
res = FALSE;
break;
} else if (demux->level_up > 0) {
demux->level_up--;
break;
}
switch (id) {
/* samplerate */
case GST_MATROSKA_ID_AUDIOSAMPLINGFREQ:{
gdouble num;
if (!gst_ebml_read_float (ebml, &id, &num)) {
res = FALSE;
break;
}
audiocontext->samplerate = num;
break;
}
/* bitdepth */
case GST_MATROSKA_ID_AUDIOBITDEPTH:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
audiocontext->bitdepth = num;
break;
}
/* channels */
case GST_MATROSKA_ID_AUDIOCHANNELS:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
audiocontext->channels = num;
break;
}
default:
GST_WARNING ("Unknown audio track header entry 0x%x - ignoring",
id);
/* pass-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
res = FALSE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
break;
}
/* codec identifier */
case GST_MATROSKA_ID_CODECID:{
gchar *text;
if (!gst_ebml_read_ascii (ebml, &id, &text)) {
res = FALSE;
break;
}
context->codec_id = text;
break;
}
/* codec private data */
case GST_MATROSKA_ID_CODECPRIVATE:{
guint8 *data;
guint64 size;
if (!gst_ebml_read_binary (ebml, &id, &data, &size)) {
res = FALSE;
break;
}
context->codec_priv = data;
context->codec_priv_size = size;
GST_LOG_OBJECT (demux, "%u bytes of codec private data", size);
break;
}
/* name of the codec */
case GST_MATROSKA_ID_CODECNAME:{
gchar *text;
if (!gst_ebml_read_utf8 (ebml, &id, &text)) {
res = FALSE;
break;
}
context->codec_name = text;
break;
}
/* name of this track */
case GST_MATROSKA_ID_TRACKNAME:{
gchar *text;
if (!gst_ebml_read_utf8 (ebml, &id, &text)) {
res = FALSE;
break;
}
context->name = text;
GST_LOG ("stream %d: trackname=%s", context->index, text);
break;
}
/* language (matters for audio/subtitles, mostly) */
case GST_MATROSKA_ID_TRACKLANGUAGE:{
gchar *text;
if (!gst_ebml_read_utf8 (ebml, &id, &text)) {
res = FALSE;
break;
}
context->language = text;
GST_LOG ("stream %d: language=%s", context->index, text);
/* fre-ca => fre */
if (strlen (context->language) >= 4 && context->language[3] == '-')
context->language[3] = '\0';
break;
}
/* whether this is actually used */
case GST_MATROSKA_ID_TRACKFLAGENABLED:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
if (num)
context->flags |= GST_MATROSKA_TRACK_ENABLED;
else
context->flags &= ~GST_MATROSKA_TRACK_ENABLED;
break;
}
/* whether it's the default for this track type */
case GST_MATROSKA_ID_TRACKFLAGDEFAULT:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
if (num)
context->flags |= GST_MATROSKA_TRACK_DEFAULT;
else
context->flags &= ~GST_MATROSKA_TRACK_DEFAULT;
break;
}
/* lacing (like MPEG, where blocks don't end/start on frame
* boundaries) */
case GST_MATROSKA_ID_TRACKFLAGLACING:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
if (num)
context->flags |= GST_MATROSKA_TRACK_LACING;
else
context->flags &= ~GST_MATROSKA_TRACK_LACING;
break;
}
/* default length (in time) of one data block in this track */
case GST_MATROSKA_ID_TRACKDEFAULTDURATION:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
context->default_duration = num;
break;
}
default:
GST_WARNING ("Unknown track header entry 0x%x - ignoring", id);
/* pass-through */
/* we ignore these because they're nothing useful (i.e. crap). */
case GST_MATROSKA_ID_CODECINFOURL:
case GST_MATROSKA_ID_CODECDOWNLOADURL:
case GST_MATROSKA_ID_TRACKMINCACHE:
case GST_MATROSKA_ID_TRACKMAXCACHE:
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
res = FALSE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (context->type == 0 || context->codec_id == NULL || !res) {
if (res)
GST_WARNING ("Unknown stream/codec in track entry header");
demux->num_streams--;
demux->src[demux->num_streams] = NULL;
if (context) {
g_free (context->codec_id);
g_free (context->codec_name);
g_free (context->name);
g_free (context->language);
g_free (context->codec_priv);
g_free (context);
}
return res;
}
/* now create the GStreamer connectivity */
switch (context->type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:{
GstMatroskaTrackVideoContext *videocontext =
(GstMatroskaTrackVideoContext *) context;
padname = g_strdup_printf ("video_%02d", demux->num_v_streams++);
templ = gst_element_class_get_pad_template (klass, "video_%02d");
caps = gst_matroska_demux_video_caps (videocontext,
context->codec_id,
context->codec_priv, context->codec_priv_size, &codec);
if (codec) {
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_VIDEO_CODEC, codec, NULL);
g_free (codec);
}
break;
}
case GST_MATROSKA_TRACK_TYPE_AUDIO:{
GstMatroskaTrackAudioContext *audiocontext =
(GstMatroskaTrackAudioContext *) context;
padname = g_strdup_printf ("audio_%02d", demux->num_a_streams++);
templ = gst_element_class_get_pad_template (klass, "audio_%02d");
caps = gst_matroska_demux_audio_caps (audiocontext,
context->codec_id,
context->codec_priv, context->codec_priv_size, &codec);
if (codec) {
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, codec, NULL);
g_free (codec);
}
break;
}
case GST_MATROSKA_TRACK_TYPE_COMPLEX:{
GstMatroskaTrackComplexContext *complexcontext =
(GstMatroskaTrackComplexContext *) context;
padname = g_strdup_printf ("video_%02d", demux->num_v_streams++);
templ = gst_element_class_get_pad_template (klass, "video_%02d");
caps = gst_matroska_demux_complex_caps (complexcontext,
context->codec_id, context->codec_priv, context->codec_priv_size);
break;
}
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:{
GstMatroskaTrackSubtitleContext *subtitlecontext =
(GstMatroskaTrackSubtitleContext *) context;
padname = g_strdup_printf ("subtitle_%02d", demux->num_t_streams++);
templ = gst_element_class_get_pad_template (klass, "subtitle_%02d");
caps = gst_matroska_demux_subtitle_caps (subtitlecontext,
context->codec_id, context->codec_priv, context->codec_priv_size);
break;
}
case GST_MATROSKA_TRACK_TYPE_LOGO:
case GST_MATROSKA_TRACK_TYPE_CONTROL:
default:
/* we should already have quit by now */
g_assert_not_reached ();
}
if ((context->language == NULL || *context->language == '\0') &&
(context->type == GST_MATROSKA_TRACK_TYPE_AUDIO ||
context->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE)) {
GST_LOG ("stream %d: language=eng (assuming default)", context->index);
context->language = g_strdup ("eng");
}
if (context->language) {
if (!list)
list = gst_tag_list_new ();
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_LANGUAGE_CODE, context->language, NULL);
}
if (caps == NULL) {
GST_WARNING_OBJECT (demux, "could not determine caps for stream with "
"codec_id='%s'", context->codec_id);
switch (context->type) {
case GST_MATROSKA_TRACK_TYPE_VIDEO:
caps = gst_caps_new_simple ("video/x-unknown", NULL);
break;
case GST_MATROSKA_TRACK_TYPE_AUDIO:
caps = gst_caps_new_simple ("audio/x-unknown", NULL);
break;
case GST_MATROSKA_TRACK_TYPE_SUBTITLE:
caps = gst_caps_new_simple ("application/x-subtitle-unknown", NULL);
break;
case GST_MATROSKA_TRACK_TYPE_COMPLEX:
default:
caps = gst_caps_new_simple ("application/x-matroska-unknown", NULL);
break;
}
}
/* the pad in here */
context->pad = gst_pad_new_from_template (templ, padname);
context->caps = caps;
gst_pad_set_event_function (context->pad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_handle_src_event));
gst_pad_set_query_type_function (context->pad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_get_src_query_types));
gst_pad_set_query_function (context->pad,
GST_DEBUG_FUNCPTR (gst_matroska_demux_handle_src_query));
GST_INFO_OBJECT (demux, "Adding pad '%s' with caps %" GST_PTR_FORMAT,
padname, caps);
context->pending_tags = list;
gst_pad_use_fixed_caps (context->pad);
gst_pad_set_caps (context->pad, context->caps);
gst_pad_set_active (context->pad, TRUE);
gst_element_add_pad (GST_ELEMENT (demux), context->pad);
g_free (padname);
/* tadaah! */
return TRUE;
}
static const GstQueryType *
gst_matroska_demux_get_src_query_types (GstPad * pad)
{
static const GstQueryType query_types[] = {
GST_QUERY_POSITION,
GST_QUERY_DURATION,
0
};
return query_types;
}
static gboolean
gst_matroska_demux_handle_src_query (GstPad * pad, GstQuery * query)
{
GstMatroskaDemux *demux;
gboolean res = FALSE;
demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gst_query_parse_position (query, &format, NULL);
if (format != GST_FORMAT_TIME) {
GST_DEBUG ("only query position on TIME is supported");
break;
}
GST_OBJECT_LOCK (demux);
gst_query_set_position (query, GST_FORMAT_TIME, demux->pos);
GST_OBJECT_UNLOCK (demux);
res = TRUE;
break;
}
case GST_QUERY_DURATION:
{
GstFormat format;
gst_query_parse_duration (query, &format, NULL);
if (format != GST_FORMAT_TIME) {
GST_DEBUG ("only query duration on TIME is supported");
break;
}
GST_OBJECT_LOCK (demux);
gst_query_set_duration (query, GST_FORMAT_TIME, demux->duration);
GST_OBJECT_UNLOCK (demux);
res = TRUE;
break;
}
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (demux);
return res;
}
static GstMatroskaIndex *
gst_matroskademux_do_index_seek (GstMatroskaDemux * demux, gint64 seek_pos,
gint64 segment_stop, gboolean keyunit)
{
guint entry;
guint n = 0;
if (!demux->num_indexes)
return NULL;
if (keyunit) {
/* find index entry closest to the requested position */
entry = 0;
for (n = 0; n < demux->num_indexes; ++n) {
gdouble d_entry, d_this;
d_entry = fabs (gst_guint64_to_gdouble (demux->index[entry].time) -
gst_guint64_to_gdouble (seek_pos));
d_this = fabs (gst_guint64_to_gdouble (demux->index[n].time) -
gst_guint64_to_gdouble (seek_pos));
if (d_this < d_entry &&
(demux->index[n].time < segment_stop || segment_stop == -1)) {
entry = n;
}
}
} else {
/* find index entry at or before the requested position */
entry = demux->num_indexes - 1;
while (n < demux->num_indexes - 1) {
if ((demux->index[n].time <= seek_pos) &&
(demux->index[n + 1].time > seek_pos)) {
entry = n;
break;
}
n++;
}
}
return &demux->index[entry];
}
/* takes ownership of the passed event! */
static gboolean
gst_matroska_demux_send_event (GstMatroskaDemux * demux, GstEvent * event)
{
gboolean ret = TRUE;
gint i;
GST_DEBUG_OBJECT (demux, "Sending event of type %s to all source pads",
GST_EVENT_TYPE_NAME (event));
for (i = 0; i < demux->num_streams; i++) {
GstMatroskaTrackContext *stream;
stream = demux->src[i];
gst_event_ref (event);
gst_pad_push_event (stream->pad, event);
if (stream->pending_tags) {
gst_element_found_tags_for_pad (GST_ELEMENT (demux), stream->pad,
stream->pending_tags);
stream->pending_tags = NULL;
}
}
gst_event_unref (event);
return ret;
}
static gboolean
gst_matroska_demux_element_send_event (GstElement * element, GstEvent * event)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
gboolean res;
if (GST_EVENT_TYPE (event) == GST_EVENT_SEEK) {
res = gst_matroska_demux_handle_seek_event (demux, event);
} else {
GST_WARNING ("Unhandled event of type %s", GST_EVENT_TYPE_NAME (event));
res = FALSE;
}
gst_event_unref (event);
return res;
}
static gboolean
gst_matroska_demux_handle_seek_event (GstMatroskaDemux * demux,
GstEvent * event)
{
GstMatroskaIndex *entry;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
GstFormat format;
GstEvent *newsegment_event;
gboolean flush, keyunit;
gdouble rate;
gint64 cur, stop;
gint64 segment_start, segment_stop;
gint i;
gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
&stop_type, &stop);
/* we can only seek on time */
if (format != GST_FORMAT_TIME) {
GST_DEBUG ("Can only seek on TIME");
return FALSE;
}
/* cannot yet do backwards playback */
if (rate <= 0.0) {
GST_DEBUG ("Can only seek with positive rate");
return FALSE;
}
/* check sanity before we start flushing and all that */
if (cur_type == GST_SEEK_TYPE_SET) {
GST_OBJECT_LOCK (demux);
if (!gst_matroskademux_do_index_seek (demux, cur, -1, FALSE)) {
GST_DEBUG ("No matching seek entry in index");
GST_OBJECT_UNLOCK (demux);
return FALSE;
}
GST_DEBUG ("Seek position looks sane");
GST_OBJECT_UNLOCK (demux);
}
flush = !!(flags & GST_SEEK_FLAG_FLUSH);
keyunit = !!(flags & GST_SEEK_FLAG_KEY_UNIT);
if (flush) {
GST_DEBUG ("Starting flush");
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_start ());
gst_matroska_demux_send_event (demux, gst_event_new_flush_start ());
} else {
gst_pad_pause_task (demux->sinkpad);
}
/* now grab the stream lock so that streaming cannot continue, for
* non flushing seeks when the element is in PAUSED this could block
* forever. */
GST_PAD_STREAM_LOCK (demux->sinkpad);
GST_OBJECT_LOCK (demux);
/* if nothing configured, play complete file */
if (cur == GST_CLOCK_TIME_NONE)
cur = 0;
if (stop == GST_CLOCK_TIME_NONE)
stop = demux->duration;
if (cur_type == GST_SEEK_TYPE_SET)
segment_start = cur;
else if (cur_type == GST_SEEK_TYPE_CUR)
segment_start = demux->segment_start + cur;
else
segment_start = demux->segment_start;
if (stop_type == GST_SEEK_TYPE_SET)
segment_stop = stop;
else if (stop_type == GST_SEEK_TYPE_CUR)
segment_stop = demux->segment_stop + stop;
else
segment_stop = demux->segment_stop;
segment_start = CLAMP (segment_start, 0, demux->duration);
segment_stop = CLAMP (segment_stop, 0, demux->duration);
GST_DEBUG ("New segment positions: %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT,
GST_TIME_ARGS (segment_start), GST_TIME_ARGS (segment_stop));
entry = gst_matroskademux_do_index_seek (demux, segment_start,
segment_stop, keyunit);
if (!entry) {
GST_DEBUG ("No matching seek entry in index");
goto seek_error;
}
/* seek (relative to matroska segment) */
if (!gst_ebml_read_seek (GST_EBML_READ (demux),
entry->pos + demux->ebml_segment_start)) {
GST_DEBUG ("Failed to seek to offset %" G_GUINT64_FORMAT,
entry->pos + demux->ebml_segment_start);
goto seek_error;
}
GST_DEBUG ("Seeked to offset %" G_GUINT64_FORMAT, entry->pos +
demux->ebml_segment_start);
if (keyunit) {
GST_DEBUG ("seek to key unit, adjusting segment start to %"
GST_TIME_FORMAT, GST_TIME_ARGS (entry->time));
segment_start = entry->time;
}
GST_DEBUG ("Committing new seek segment");
demux->segment_rate = rate;
demux->segment_play = !!(flags & GST_SEEK_FLAG_SEGMENT);
demux->segment_start = segment_start;
demux->segment_stop = segment_stop;
GST_OBJECT_UNLOCK (demux);
/* notify start of new segment */
if (demux->segment_play) {
GstMessage *msg;
msg = gst_message_new_segment_start (GST_OBJECT (demux),
GST_FORMAT_TIME, demux->segment_start);
gst_element_post_message (GST_ELEMENT (demux), msg);
}
newsegment_event = gst_event_new_new_segment (FALSE, rate,
GST_FORMAT_TIME, segment_start, segment_stop, segment_start);
GST_DEBUG ("Stopping flush");
if (flush) {
gst_matroska_demux_send_event (demux, gst_event_new_flush_stop ());
}
gst_pad_push_event (demux->sinkpad, gst_event_new_flush_stop ());
/* send newsegment event to all source pads and update the time */
gst_matroska_demux_send_event (demux, newsegment_event);
for (i = 0; i < demux->num_streams; i++) {
demux->src[i]->pos = entry->time;
demux->src[i]->set_discont = TRUE;
}
demux->pos = entry->time;
/* restart our task since it might have been stopped when we did the
* flush. */
gst_pad_start_task (demux->sinkpad, (GstTaskFunction) gst_matroska_demux_loop,
demux->sinkpad);
/* streaming can continue now */
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
return TRUE;
seek_error:
/* FIXME: shouldn't we either make it a real error or start the task
* function again so that things can continue from where they left off? */
GST_DEBUG ("Got a seek error");
GST_OBJECT_UNLOCK (demux);
GST_PAD_STREAM_UNLOCK (demux->sinkpad);
return FALSE;
}
static gboolean
gst_matroska_demux_handle_src_event (GstPad * pad, GstEvent * event)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
gboolean res = TRUE;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
res = gst_matroska_demux_handle_seek_event (demux, event);
break;
/* events we don't need to handle */
case GST_EVENT_NAVIGATION:
case GST_EVENT_QOS:
res = FALSE;
break;
default:
GST_WARNING ("Unhandled %s event, dropped", GST_EVENT_TYPE_NAME (event));
res = FALSE;
break;
}
gst_object_unref (demux);
gst_event_unref (event);
return res;
}
static gboolean
gst_matroska_demux_init_stream (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
guint32 id;
gchar *doctype;
guint version;
if (!gst_ebml_read_header (ebml, &doctype, &version))
return FALSE;
if (!doctype || strcmp (doctype, "matroska") != 0) {
GST_ELEMENT_ERROR (demux, STREAM, WRONG_TYPE, (NULL),
("Input is not a matroska stream (doctype=%s)",
doctype ? doctype : "none"));
g_free (doctype);
return FALSE;
}
g_free (doctype);
if (version > 2) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Demuxer version (2) is too old to read stream version %d", version));
return FALSE;
}
/* find segment, must be the next element */
while (1) {
guint last_level;
if (!gst_ebml_peek_id (ebml, &last_level, &id)) {
GST_DEBUG_OBJECT (demux, "gst_ebml_peek_id() failed!");
return FALSE;
}
if (id == GST_MATROSKA_ID_SEGMENT)
break;
/* oi! */
GST_WARNING ("Expected a Segment ID (0x%x), but received 0x%x!",
GST_MATROSKA_ID_SEGMENT, id);
if (!gst_ebml_read_skip (ebml))
return FALSE;
}
/* we now have a EBML segment */
if (!gst_ebml_read_master (ebml, &id)) {
GST_DEBUG_OBJECT (demux, "gst_ebml_read_master() failed!");
return FALSE;
}
/* seeks are from the beginning of the segment,
* after the segment ID/length */
demux->ebml_segment_start = ebml->offset;
return TRUE;
}
static gboolean
gst_matroska_demux_parse_tracks (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean res = TRUE;
guint32 id;
while (res) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id)) {
res = FALSE;
break;
} else if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* one track within the "all-tracks" header */
case GST_MATROSKA_ID_TRACKENTRY:
if (!gst_matroska_demux_add_stream (demux))
res = FALSE;
break;
default:
GST_WARNING ("Unknown entry 0x%x in track header", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
res = FALSE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return res;
}
static gboolean
gst_matroska_demux_parse_index_cuetrack (GstMatroskaDemux * demux,
gboolean prevent_eos, GstMatroskaIndex * idx, guint64 length)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
guint32 id;
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
while (!got_error) {
if (prevent_eos && length == ebml->offset)
break;
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* track number */
case GST_MATROSKA_ID_CUETRACK:
{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num))
goto error;
idx->track = num;
break;
}
/* position in file */
case GST_MATROSKA_ID_CUECLUSTERPOSITION:
{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num))
goto error;
idx->pos = num;
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in CuesTrackPositions", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
goto error;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return TRUE;
error:
if (demux->level_up)
demux->level_up--;
return FALSE;
}
static gboolean
gst_matroska_demux_parse_index_pointentry (GstMatroskaDemux * demux,
gboolean prevent_eos, guint64 length)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstMatroskaIndex idx;
gboolean got_error = FALSE;
guint32 id;
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
/* in the end, we hope to fill one entry with a
* timestamp, a file position and a tracknum */
idx.pos = (guint64) - 1;
idx.time = (guint64) - 1;
idx.track = (guint16) - 1;
while (!got_error) {
if (prevent_eos && length == ebml->offset)
break;
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* one single index entry ('point') */
case GST_MATROSKA_ID_CUETIME:
{
guint64 time;
if (!gst_ebml_read_uint (ebml, &id, &time)) {
got_error = TRUE;
} else {
idx.time = time * demux->time_scale;
}
break;
}
/* position in the file + track to which it belongs */
case GST_MATROSKA_ID_CUETRACKPOSITION:
{
if (!gst_matroska_demux_parse_index_cuetrack (demux, prevent_eos, &idx,
length)) {
got_error = TRUE;
}
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in cuespoint index", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
/* so let's see if we got what we wanted */
if (idx.pos != (guint64) - 1 &&
idx.time != (guint64) - 1 && idx.track != (guint16) - 1) {
if (demux->num_indexes % 32 == 0) {
/* re-allocate bigger index */
demux->index = g_renew (GstMatroskaIndex, demux->index,
demux->num_indexes + 32);
}
GST_DEBUG_OBJECT (demux, "Index entry: pos=%" G_GUINT64_FORMAT
", time=%" GST_TIME_FORMAT ", track=%u", idx.pos,
GST_TIME_ARGS (idx.time), (guint) idx.track);
demux->index[demux->num_indexes].pos = idx.pos;
demux->index[demux->num_indexes].time = idx.time;
demux->index[demux->num_indexes].track = idx.track;
demux->num_indexes++;
}
return (!got_error);
}
static gboolean
gst_matroska_demux_parse_index (GstMatroskaDemux * demux, gboolean prevent_eos)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
guint32 id;
guint64 length = 0;
if (prevent_eos) {
length = gst_ebml_read_get_length (ebml);
}
while (!got_error) {
/* We're an element that can be seeked to. If we are, then
* we want to prevent EOS, since that'll kill us. So we cache
* file size and seek until there, and don't call EOS upon os. */
if (prevent_eos && length == ebml->offset)
break;
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* one single index entry ('point') */
case GST_MATROSKA_ID_POINTENTRY:
if (!gst_matroska_demux_parse_index_pointentry (demux, prevent_eos,
length))
got_error = TRUE;
break;
default:
GST_WARNING ("Unknown entry 0x%x in cues header", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return (!got_error);
}
static gboolean
gst_matroska_demux_parse_info (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean res = TRUE;
guint32 id;
while (res) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id)) {
res = FALSE;
break;
} else if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* cluster timecode */
case GST_MATROSKA_ID_TIMECODESCALE:{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
res = FALSE;
break;
}
demux->time_scale = num;
break;
}
case GST_MATROSKA_ID_DURATION:{
gdouble num;
if (!gst_ebml_read_float (ebml, &id, &num)) {
res = FALSE;
break;
}
demux->duration = num * gst_guint64_to_gdouble (demux->time_scale);
break;
}
case GST_MATROSKA_ID_WRITINGAPP:{
gchar *text;
if (!gst_ebml_read_utf8 (ebml, &id, &text)) {
res = FALSE;
break;
}
demux->writing_app = text;
break;
}
case GST_MATROSKA_ID_MUXINGAPP:{
gchar *text;
if (!gst_ebml_read_utf8 (ebml, &id, &text)) {
res = FALSE;
break;
}
demux->muxing_app = text;
break;
}
case GST_MATROSKA_ID_DATEUTC:{
gint64 time;
if (!gst_ebml_read_date (ebml, &id, &time)) {
res = FALSE;
break;
}
demux->created = time;
break;
}
case GST_MATROSKA_ID_SEGMENTUID:{
/* TODO not yet implemented. */
if (!gst_ebml_read_skip (ebml))
res = FALSE;
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in info header", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
res = FALSE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return res;
}
static gboolean
gst_matroska_demux_parse_metadata_id_simple_tag (GstMatroskaDemux * demux,
gboolean prevent_eos, guint64 length, GstTagList ** p_taglist)
{
struct
{
gchar *matroska_tagname;
gchar *gstreamer_tagname;
}
tag_conv[] = {
{
GST_MATROSKA_TAG_ID_TITLE, GST_TAG_TITLE}, {
GST_MATROSKA_TAG_ID_AUTHOR, GST_TAG_ARTIST}, {
GST_MATROSKA_TAG_ID_ALBUM, GST_TAG_ALBUM}, {
GST_MATROSKA_TAG_ID_COMMENTS, GST_TAG_COMMENT}, {
GST_MATROSKA_TAG_ID_BITSPS, GST_TAG_BITRATE}, {
GST_MATROSKA_TAG_ID_ENCODER, GST_TAG_ENCODER}, {
GST_MATROSKA_TAG_ID_DATE, GST_TAG_DATE}, {
GST_MATROSKA_TAG_ID_ISRC, GST_TAG_ISRC}, {
GST_MATROSKA_TAG_ID_COPYRIGHT, GST_TAG_COPYRIGHT}
};
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
guint32 id;
gchar *value = NULL;
gchar *tag = NULL;
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
while (!got_error) {
/* read all sub-entries */
if (prevent_eos && length == ebml->offset)
break;
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_TAGNAME:
g_free (tag);
if (!gst_ebml_read_ascii (ebml, &id, &tag))
got_error = TRUE;
break;
case GST_MATROSKA_ID_TAGSTRING:
g_free (value);
if (!gst_ebml_read_utf8 (ebml, &id, &value))
got_error = TRUE;
break;
default:
GST_WARNING ("Unknown entry 0x%x in metadata collection", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (tag && value) {
guint i;
for (i = 0; i < G_N_ELEMENTS (tag_conv); i++) {
const gchar *tagname_gst = tag_conv[i].gstreamer_tagname;
const gchar *tagname_mkv = tag_conv[i].matroska_tagname;
if (strcmp (tagname_mkv, tag) == 0) {
GValue src = { 0, };
GValue dest = { 0, };
GType dest_type = gst_tag_get_type (tagname_gst);
g_value_init (&src, G_TYPE_STRING);
g_value_set_string (&src, value);
g_value_init (&dest, dest_type);
g_value_transform (&src, &dest);
g_value_unset (&src);
gst_tag_list_add_values (*p_taglist, GST_TAG_MERGE_APPEND,
tagname_gst, &dest, NULL);
g_value_unset (&dest);
break;
}
}
}
g_free (tag);
g_free (value);
return (!got_error);
}
static gboolean
gst_matroska_demux_parse_metadata_id_tag (GstMatroskaDemux * demux,
gboolean prevent_eos, guint64 length, GstTagList ** p_taglist)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
guint32 id;
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
while (!got_error) {
/* read all sub-entries */
if (prevent_eos && length == ebml->offset)
break;
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_SIMPLETAG:
if (!gst_matroska_demux_parse_metadata_id_simple_tag (demux,
prevent_eos, length, p_taglist)) {
got_error = TRUE;
}
break;
default:
GST_WARNING ("Unknown entry 0x%x in metadata collection", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return (!got_error);
}
static gboolean
gst_matroska_demux_parse_metadata (GstMatroskaDemux * demux,
gboolean prevent_eos)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
GstTagList *taglist = gst_tag_list_new ();
gboolean got_error = FALSE;
guint64 length = 0;
guint32 id;
if (prevent_eos) {
length = gst_ebml_read_get_length (ebml);
}
while (!got_error) {
/* We're an element that can be seeked to. If we are, then
* we want to prevent EOS, since that'll kill us. So we cache
* file size and seek until there, and don't call EOS upon os. */
if (prevent_eos && length == ebml->offset)
break;
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_TAG:
if (!gst_matroska_demux_parse_metadata_id_tag (demux, prevent_eos,
length, &taglist)) {
got_error = TRUE;
}
break;
default:
GST_WARNING ("Unknown entry 0x%x in metadata header", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (gst_structure_n_fields (GST_STRUCTURE (taglist)) > 0) {
gst_element_found_tags (GST_ELEMENT (ebml), taglist);
} else {
gst_tag_list_free (taglist);
}
return (!got_error);
}
/*
* Read signed/unsigned "EBML" numbers.
* Return: number of bytes processed.
*/
static gint
gst_matroska_ebmlnum_uint (guint8 * data, guint size, guint64 * num)
{
gint len_mask = 0x80, read = 1, n = 1, num_ffs = 0;
guint64 total;
if (size <= 0) {
return -1;
}
total = data[0];
while (read <= 8 && !(total & len_mask)) {
read++;
len_mask >>= 1;
}
if (read > 8)
return -1;
if ((total &= (len_mask - 1)) == len_mask - 1)
num_ffs++;
if (size < read)
return -1;
while (n < read) {
if (data[n] == 0xff)
num_ffs++;
total = (total << 8) | data[n];
n++;
}
if (read == num_ffs && total != 0)
*num = G_MAXUINT64;
else
*num = total;
return read;
}
static gint
gst_matroska_ebmlnum_sint (guint8 * data, guint size, gint64 * num)
{
guint64 unum;
gint res;
/* read as unsigned number first */
if ((res = gst_matroska_ebmlnum_uint (data, size, &unum)) < 0)
return -1;
/* make signed */
if (unum == G_MAXUINT64)
*num = G_MAXINT64;
else
*num = unum - ((1 << ((7 * res) - 1)) - 1);
return res;
}
/*
* Mostly used for subtitles. We add void filler data for each
* lagging stream to make sure we don't deadlock.
*/
static void
gst_matroska_demux_sync_streams (GstMatroskaDemux * demux)
{
gint stream_nr;
GST_LOG ("Sync to %" GST_TIME_FORMAT, GST_TIME_ARGS (demux->pos));
for (stream_nr = 0; stream_nr < demux->num_streams; stream_nr++) {
GstMatroskaTrackContext *context;
context = demux->src[stream_nr];
if (context->type != GST_MATROSKA_TRACK_TYPE_SUBTITLE)
continue;
GST_LOG ("Checking for resync on stream %d (%" GST_TIME_FORMAT ")",
stream_nr, GST_TIME_ARGS (context->pos));
/* does it lag? 0.5 seconds is a random treshold... */
if (context->pos + (GST_SECOND / 2) < demux->pos) {
GST_DEBUG ("Synchronizing stream %d with others by advancing time "
"from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT, stream_nr,
GST_TIME_ARGS (context->pos), GST_TIME_ARGS (demux->pos));
context->pos = demux->pos;
/* advance stream time */
gst_pad_push_event (context->pad,
gst_event_new_new_segment (TRUE, demux->segment_rate,
GST_FORMAT_TIME, demux->pos, -1, demux->pos));
}
}
}
static gboolean
gst_matroska_demux_push_xiph_codec_priv_data (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream)
{
GstFlowReturn ret;
GstBuffer *priv;
guint32 offset, length;
guchar *p;
gint i;
/* 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;
for (i = 0; i < 2; i++) {
length = p[i + 1];
if (gst_pad_alloc_buffer_and_set_caps (stream->pad, GST_BUFFER_OFFSET_NONE,
length, stream->caps, &priv) == GST_FLOW_OK) {
memcpy (GST_BUFFER_DATA (priv), &p[offset], length);
ret = gst_pad_push (stream->pad, priv);
if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
return FALSE;
}
offset += length;
}
length = stream->codec_priv_size - offset;
if (gst_pad_alloc_buffer_and_set_caps (stream->pad, GST_BUFFER_OFFSET_NONE,
length, stream->caps, &priv) == GST_FLOW_OK) {
memcpy (GST_BUFFER_DATA (priv), &p[offset], length);
ret = gst_pad_push (stream->pad, priv);
if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
return FALSE;
}
return TRUE;
}
static gboolean
gst_matroska_demux_stream_is_wavpack (GstMatroskaTrackContext * stream)
{
if (stream->type == GST_MATROSKA_TRACK_TYPE_AUDIO) {
return (strcmp (stream->codec_id,
GST_MATROSKA_CODEC_ID_AUDIO_WAVPACK4) == 0);
}
return FALSE;
}
static gboolean
gst_matroska_demux_add_wvpk_header (GstMatroskaTrackContext * stream,
gint block_length, GstBuffer ** buf)
{
GstBuffer *newbuf;
guint8 *data;
guint newlen;
/* we need to reconstruct the header of the wavpack block */
Wavpack4Header wvh;
wvh.ck_id[0] = 'w';
wvh.ck_id[1] = 'v';
wvh.ck_id[2] = 'p';
wvh.ck_id[3] = 'k';
/* -20 because ck_size is the size of the wavpack block -8
* and lace_size is the size of the wavpack block + 12
* (the three guint32 of the header that already are in the buffer) */
wvh.ck_size = block_length + sizeof (Wavpack4Header) - 20;
wvh.version = GST_READ_UINT16_LE (stream->codec_priv);
wvh.track_no = 0;
wvh.index_no = 0;
wvh.total_samples = -1;
wvh.block_index = 0;
/* block_samples, flags and crc are already in the buffer */
newlen = block_length + sizeof (Wavpack4Header) - 12;
if (gst_pad_alloc_buffer_and_set_caps (stream->pad, GST_BUFFER_OFFSET_NONE,
newlen, stream->caps, &newbuf) != GST_FLOW_OK) {
return TRUE; /* not an error, pad might not be linked */
}
data = GST_BUFFER_DATA (newbuf);
data[0] = 'w';
data[1] = 'v';
data[2] = 'p';
data[3] = 'k';
GST_WRITE_UINT32_LE (data + 4, wvh.ck_size);
GST_WRITE_UINT16_LE (data + 8, wvh.version);
GST_WRITE_UINT8 (data + 10, wvh.track_no);
GST_WRITE_UINT8 (data + 11, wvh.index_no);
GST_WRITE_UINT32_LE (data + 12, wvh.total_samples);
GST_WRITE_UINT32_LE (data + 16, wvh.block_index);
g_memmove (data + 20, GST_BUFFER_DATA (*buf), block_length);
gst_buffer_stamp (newbuf, *buf);
gst_buffer_unref (*buf);
*buf = newbuf;
return TRUE;
}
static GstBuffer *
gst_matroska_demux_check_subtitle_buffer (GstMatroskaDemux * demux,
GstMatroskaTrackContext * stream, GstBuffer * buf)
{
GstMatroskaTrackSubtitleContext *sub_stream;
const gchar *encoding, *data;
GError *err = NULL;
GstBuffer *newbuf;
gchar *utf8;
guint size;
sub_stream = (GstMatroskaTrackSubtitleContext *) stream;
if (!sub_stream->check_utf8)
return buf;
data = (const gchar *) GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
if (!sub_stream->invalid_utf8) {
if (g_utf8_validate (data, size, NULL)) {
return buf;
}
GST_WARNING_OBJECT (demux, "subtitle stream %d is not valid UTF-8, this "
"is broken according to the matroska specification", stream->num);
sub_stream->invalid_utf8 = TRUE;
}
/* file with broken non-UTF8 subtitle, do the best we can do to fix it */
encoding = g_getenv ("GST_SUBTITLE_ENCODING");
if (encoding == NULL || *encoding == '\0') {
/* if local encoding is UTF-8 and no encoding specified
* via the environment variable, assume ISO-8859-15 */
if (g_get_charset (&encoding)) {
encoding = "ISO-8859-15";
}
}
utf8 = g_convert_with_fallback (data, size, "UTF-8", encoding, "*",
NULL, NULL, &err);
if (err) {
GST_LOG_OBJECT (demux, "could not convert string from '%s' to UTF-8: %s",
encoding, err->message);
g_error_free (err);
g_free (utf8);
/* invalid input encoding, fall back to ISO-8859-15 (always succeeds) */
encoding = "ISO-8859-15";
utf8 = g_convert_with_fallback (data, size, "UTF-8", encoding, "*",
NULL, NULL, NULL);
}
GST_LOG_OBJECT (demux, "converted subtitle text from %s to UTF-8 %s",
encoding, (err) ? "(using ISO-8859-15 as fallback)" : "");
if (utf8 == NULL)
utf8 = g_strdup ("invalid subtitle");
newbuf = gst_buffer_new ();
GST_BUFFER_MALLOCDATA (newbuf) = (guint8 *) utf8;
GST_BUFFER_DATA (newbuf) = (guint8 *) utf8;
GST_BUFFER_SIZE (newbuf) = strlen (utf8);
gst_buffer_stamp (newbuf, buf);
gst_buffer_unref (buf);
return newbuf;
}
static gboolean
gst_matroska_demux_parse_blockgroup_or_simpleblock (GstMatroskaDemux * demux,
guint64 cluster_time, gboolean is_simpleblock)
{
GstMatroskaTrackContext *stream = NULL;
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
gboolean readblock = FALSE;
guint32 id;
guint64 block_duration = 0;
GstBuffer *buf = NULL;
gint stream_num = 0, n, laces = 0;
guint size = 0;
gint *lace_size = NULL;
gint64 time = 0;
gint64 lace_time = 0;
gint flags = 0;
while (!got_error) {
if (!is_simpleblock) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
goto error;
if (demux->level_up) {
demux->level_up--;
break;
}
} else {
id = GST_MATROSKA_ID_SIMPLEBLOCK;
}
switch (id) {
/* one block inside the group. Note, block parsing is one
* of the harder things, so this code is a bit complicated.
* See http://www.matroska.org/ for documentation. */
case GST_MATROSKA_ID_SIMPLEBLOCK:
case GST_MATROSKA_ID_BLOCK:
{
guint64 num;
guint8 *data;
if (!gst_ebml_read_buffer (ebml, &id, &buf)) {
got_error = TRUE;
break;
}
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* first byte(s): blocknum */
if ((n = gst_matroska_ebmlnum_uint (data, size, &num)) < 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL), ("Data error"));
gst_buffer_unref (buf);
got_error = TRUE;
break;
}
data += n;
size -= n;
/* fetch stream from num */
stream_num = gst_matroska_demux_stream_from_num (demux, num);
if (size <= 3 || stream_num < 0 || stream_num >= demux->num_streams) {
gst_buffer_unref (buf);
GST_WARNING ("Invalid stream %d or size %u", stream_num, size);
break;
}
stream = demux->src[stream_num];
/* time (relative to cluster time) */
time = ((gint16) GST_READ_UINT16_BE (data)) * demux->time_scale;
data += 2;
size -= 2;
flags = GST_READ_UINT8 (data);
data += 1;
size -= 1;
switch ((flags & 0x06) >> 1) {
case 0x0: /* no lacing */
laces = 1;
lace_size = g_new (gint, 1);
lace_size[0] = size;
break;
case 0x1: /* xiph lacing */
case 0x2: /* fixed-size lacing */
case 0x3: /* EBML lacing */
if (size == 0) {
got_error = TRUE;
break;
}
laces = GST_READ_UINT8 (data) + 1;
data += 1;
size -= 1;
lace_size = g_new0 (gint, laces);
switch ((flags & 0x06) >> 1) {
case 0x1: /* xiph lacing */ {
guint temp, total = 0;
for (n = 0; !got_error && n < laces - 1; n++) {
while (1) {
if (size == 0) {
got_error = TRUE;
break;
}
temp = GST_READ_UINT8 (data);
lace_size[n] += temp;
data += 1;
size -= 1;
if (temp != 0xff)
break;
}
total += lace_size[n];
}
lace_size[n] = size - total;
break;
}
case 0x2: /* fixed-size lacing */
for (n = 0; n < laces; n++)
lace_size[n] = size / laces;
break;
case 0x3: /* EBML lacing */ {
guint total;
if ((n = gst_matroska_ebmlnum_uint (data, size, &num)) < 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Data error"));
got_error = TRUE;
break;
}
data += n;
size -= n;
total = lace_size[0] = num;
for (n = 1; !got_error && n < laces - 1; n++) {
gint64 snum;
gint r;
if ((r = gst_matroska_ebmlnum_sint (data, size, &snum)) < 0) {
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
("Data error"));
got_error = TRUE;
break;
}
data += r;
size -= r;
lace_size[n] = lace_size[n - 1] + snum;
total += lace_size[n];
}
if (n < laces)
lace_size[n] = size - total;
break;
}
}
break;
}
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)
break;
readblock = TRUE;
break;
}
case GST_MATROSKA_ID_BLOCKDURATION:{
if (!gst_ebml_read_uint (ebml, &id, &block_duration))
got_error = TRUE;
break;
}
case GST_MATROSKA_ID_REFERENCEBLOCK:{
/* FIXME: implement support for ReferenceBlock
gint64 num;
if (!gst_ebml_read_sint (ebml, &id, &num)) {
res = FALSE;
break;
}
GST_WARNING ("FIXME: implement support for ReferenceBlock");
*/
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in blockgroup data", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (is_simpleblock)
break;
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (cluster_time != GST_CLOCK_TIME_NONE) {
if (time < 0 && (-time) > cluster_time)
lace_time = cluster_time;
else
lace_time = cluster_time + time;
} else {
lace_time = GST_CLOCK_TIME_NONE;
}
if (!got_error && readblock) {
guint64 duration = 0;
stream = demux->src[stream_num];
if (block_duration) {
duration = block_duration * demux->time_scale;
} else if (stream->default_duration) {
duration = stream->default_duration;
}
for (n = 0; n < laces; n++) {
GstFlowReturn ret;
GstBuffer *sub;
if (lace_size[n] == 0)
continue;
sub = gst_buffer_create_sub (buf,
GST_BUFFER_SIZE (buf) - size, lace_size[n]);
GST_BUFFER_TIMESTAMP (sub) = lace_time;
if (lace_time != GST_CLOCK_TIME_NONE)
demux->pos = lace_time;
stream->pos = demux->pos;
gst_matroska_demux_sync_streams (demux);
if (gst_matroska_demux_stream_is_wavpack (stream)) {
if (!gst_matroska_demux_add_wvpk_header (stream, lace_size[n], &sub)) {
got_error = TRUE;
}
}
/* FIXME: do all laces have the same lenght? */
if (duration) {
GST_BUFFER_DURATION (sub) = duration / laces;
stream->pos += GST_BUFFER_DURATION (sub);
}
if (is_simpleblock) {
if (flags & 0x80)
GST_BUFFER_FLAG_UNSET (sub, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DELTA_UNIT);
}
if (stream->set_discont) {
GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DISCONT);
stream->set_discont = FALSE;
}
GST_DEBUG ("Pushing data of size %d for stream %d, time=%"
GST_TIME_FORMAT " and duration=%" GST_TIME_FORMAT,
GST_BUFFER_SIZE (sub), stream_num,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (sub)),
GST_TIME_ARGS (GST_BUFFER_DURATION (sub)));
gst_buffer_set_caps (sub, GST_PAD_CAPS (stream->pad));
/* Fix up broken files with subtitles that are not UTF8 */
if (stream->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE) {
sub = gst_matroska_demux_check_subtitle_buffer (demux, stream, sub);
}
ret = gst_pad_push (stream->pad, sub);
if (ret != GST_FLOW_OK && ret != GST_FLOW_NOT_LINKED)
got_error = TRUE;
size -= lace_size[n];
if (lace_time != GST_CLOCK_TIME_NONE)
lace_time += duration;
}
}
if (0) {
error:
got_error = TRUE;
}
if (readblock)
gst_buffer_unref (buf);
g_free (lace_size);
return (!got_error);
}
static gboolean
gst_matroska_demux_parse_cluster (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
guint64 cluster_time = GST_CLOCK_TIME_NONE;
guint32 id;
while (!got_error) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
/* cluster timecode */
case GST_MATROSKA_ID_CLUSTERTIMECODE:
{
guint64 num;
if (!gst_ebml_read_uint (ebml, &id, &num)) {
got_error = TRUE;
} else {
cluster_time = num * demux->time_scale;
}
break;
}
/* a group of blocks inside a cluster */
case GST_MATROSKA_ID_BLOCKGROUP:
if (!gst_ebml_read_master (ebml, &id)) {
got_error = TRUE;
} else {
if (!gst_matroska_demux_parse_blockgroup_or_simpleblock (demux,
cluster_time, FALSE))
got_error = TRUE;
}
break;
case GST_MATROSKA_ID_SIMPLEBLOCK:
{
if (!gst_matroska_demux_parse_blockgroup_or_simpleblock (demux,
cluster_time, TRUE))
got_error = TRUE;
break;
}
default:
GST_WARNING ("Unknown entry 0x%x in cluster data", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return (!got_error);
}
static gboolean
gst_matroska_demux_parse_contents_seekentry (GstMatroskaDemux * demux,
gboolean * p_run_loop)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
guint64 seek_pos = (guint64) - 1;
guint32 seek_id = 0;
guint32 id;
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
while (!got_error) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_SEEKID:
{
guint64 t;
if (!gst_ebml_read_uint (ebml, &id, &t)) {
got_error = TRUE;
} else {
seek_id = t;
}
break;
}
case GST_MATROSKA_ID_SEEKPOSITION:
{
guint64 t;
if (!gst_ebml_read_uint (ebml, &id, &t)) {
got_error = TRUE;
} else {
seek_pos = t;
}
break;
}
default:
GST_WARNING ("Unknown seekhead ID 0x%x", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
if (got_error)
return FALSE;
if (!seek_id || seek_pos == (guint64) - 1) {
GST_WARNING ("Incomplete seekhead entry (0x%x/%"
G_GUINT64_FORMAT ")", seek_id, seek_pos);
return TRUE;
}
switch (seek_id) {
case GST_MATROSKA_ID_CUES:
case GST_MATROSKA_ID_TAGS:
{
guint level_up = demux->level_up;
guint64 before_pos, length;
GstEbmlLevel *level;
/* remember */
length = gst_ebml_read_get_length (ebml);
before_pos = ebml->offset;
/* check for validity */
if (seek_pos + demux->ebml_segment_start + 12 >= length) {
GST_WARNING_OBJECT (demux,
"Seekhead reference lies outside file!" " (%"
G_GUINT64_FORMAT "+%" G_GUINT64_FORMAT "+12 >= %"
G_GUINT64_FORMAT ")", seek_pos, demux->ebml_segment_start, length);
break;
}
/* seek */
if (!gst_ebml_read_seek (ebml, seek_pos + demux->ebml_segment_start))
return FALSE;
/* we don't want to lose our seekhead level, so we add
* a dummy. This is a crude hack. */
level = g_new (GstEbmlLevel, 1);
level->start = 0;
level->length = G_MAXUINT64;
ebml->level = g_list_append (ebml->level, level);
/* check ID */
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (id != seek_id) {
g_warning ("We looked for ID=0x%x but got ID=0x%x (pos=%"
G_GUINT64_FORMAT ")", seek_id, id,
seek_pos + demux->ebml_segment_start);
goto finish;
}
/* read master + parse */
switch (id) {
case GST_MATROSKA_ID_CUES:
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
if (!gst_matroska_demux_parse_index (demux, TRUE))
return FALSE;
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
else
demux->index_parsed = TRUE;
break;
case GST_MATROSKA_ID_TAGS:
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
if (!gst_matroska_demux_parse_metadata (demux, TRUE))
return FALSE;
if (gst_ebml_read_get_length (ebml) == ebml->offset)
*p_run_loop = FALSE;
else
demux->metadata_parsed = TRUE;
break;
}
/* used to be here in 0.8 version, but makes mewmew sample not work */
/* if (*p_run_loop == FALSE) break; */
finish:
/* remove dummy level */
while (ebml->level) {
guint64 length;
level = g_list_last (ebml->level)->data;
ebml->level = g_list_remove (ebml->level, level);
length = level->length;
g_free (level);
if (length == G_MAXUINT64)
break;
}
/* seek back */
(void) gst_ebml_read_seek (ebml, before_pos);
demux->level_up = level_up;
break;
}
default:
GST_INFO ("Ignoring seekhead entry for ID=0x%x", seek_id);
break;
}
return (!got_error);
}
static gboolean
gst_matroska_demux_parse_contents (GstMatroskaDemux * demux,
gboolean * p_run_loop)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
guint32 id;
while (!got_error) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
switch (id) {
case GST_MATROSKA_ID_SEEKENTRY:
{
if (!gst_matroska_demux_parse_contents_seekentry (demux, p_run_loop))
got_error = TRUE;
break;
}
default:
GST_WARNING ("Unknown seekhead ID 0x%x", id);
/* fall-through */
case GST_EBML_ID_VOID:
if (!gst_ebml_read_skip (ebml))
got_error = TRUE;
break;
}
if (demux->level_up) {
demux->level_up--;
break;
}
}
return (!got_error);
}
/* returns FALSE on error, otherwise TRUE */
static gboolean
gst_matroska_demux_loop_stream_parse_id (GstMatroskaDemux * demux,
guint32 id, gboolean * p_run_loop)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
switch (id) {
/* stream info */
case GST_MATROSKA_ID_INFO:
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
if (!gst_matroska_demux_parse_info (demux))
return FALSE;
break;
/* track info headers */
case GST_MATROSKA_ID_TRACKS:
{
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
if (!gst_matroska_demux_parse_tracks (demux))
return FALSE;
break;
}
/* stream index */
case GST_MATROSKA_ID_CUES:
{
if (!demux->index_parsed) {
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
if (!gst_matroska_demux_parse_index (demux, FALSE))
return FALSE;
} else {
if (!gst_ebml_read_skip (ebml))
return FALSE;
}
break;
}
/* metadata */
case GST_MATROSKA_ID_TAGS:
{
if (!demux->index_parsed) {
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
if (!gst_matroska_demux_parse_metadata (demux, FALSE))
return FALSE;
} else {
if (!gst_ebml_read_skip (ebml))
return FALSE;
}
break;
}
/* file index (if seekable, seek to Cues/Tags to parse it) */
case GST_MATROSKA_ID_SEEKHEAD:
{
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
if (!gst_matroska_demux_parse_contents (demux, p_run_loop))
return FALSE;
break;
}
case GST_MATROSKA_ID_CLUSTER:
{
if (demux->state != GST_MATROSKA_DEMUX_STATE_DATA) {
demux->state = GST_MATROSKA_DEMUX_STATE_DATA;
/* FIXME: different streams might have different lengths! */
/* send initial discont */
gst_matroska_demux_send_event (demux,
gst_event_new_new_segment (FALSE, 1.0,
GST_FORMAT_TIME, 0,
(demux->duration > 0) ? demux->duration : -1, 0));
GST_DEBUG_OBJECT (demux, "signaling no more pads");
gst_element_no_more_pads (GST_ELEMENT (demux));
} else {
if (!gst_ebml_read_master (ebml, &id))
return FALSE;
/* The idea is that we parse one cluster per loop and
* then break out of the loop here. In the next call
* of the loopfunc, we will get back here with the
* next cluster. If an error occurs, we didn't
* actually push a buffer, but we still want to break
* out of the loop to handle a possible error. We'll
* get back here if it's recoverable. */
if (!gst_matroska_demux_parse_cluster (demux))
return FALSE;
*p_run_loop = FALSE;
}
break;
}
default:
GST_WARNING ("Unknown matroska file header ID 0x%x at %"
G_GUINT64_FORMAT, id, GST_EBML_READ (demux)->offset);
/* fall-through */
case GST_EBML_ID_VOID:
{
if (!gst_ebml_read_skip (ebml))
return FALSE;
break;
}
}
return TRUE;
}
static gboolean
gst_matroska_demux_loop_stream (GstMatroskaDemux * demux)
{
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean got_error = FALSE;
gboolean run_loop = TRUE;
guint32 id;
/* we've found our segment, start reading the different contents in here */
while (run_loop && !got_error) {
if (!gst_ebml_peek_id (ebml, &demux->level_up, &id))
return FALSE;
if (demux->level_up) {
demux->level_up--;
break;
}
if (!gst_matroska_demux_loop_stream_parse_id (demux, id, &run_loop))
got_error = TRUE;
if (demux->level_up) {
demux->level_up--;
break;
}
}
return (!got_error);
}
static void
gst_matroska_demux_loop (GstPad * pad)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
GstEbmlRead *ebml = GST_EBML_READ (demux);
gboolean ret;
/* first, if we're to start, let's actually get starting */
if (demux->state == GST_MATROSKA_DEMUX_STATE_START) {
if (!gst_matroska_demux_init_stream (demux)) {
GST_WARNING_OBJECT (demux, "init stream failed!");
goto eos_and_pause;
}
demux->state = GST_MATROSKA_DEMUX_STATE_HEADER;
}
ret = gst_matroska_demux_loop_stream (demux);
/* check if we're at the end of a configured segment */
if (GST_CLOCK_TIME_IS_VALID (demux->segment_stop)) {
guint i;
for (i = 0; i < demux->num_streams; i++) {
if (demux->src[i]->pos >= demux->segment_stop) {
GST_INFO_OBJECT (demux, "Reached end of segment (%" G_GUINT64_FORMAT
"-%" G_GUINT64_FORMAT ") on pad %s:%s", demux->segment_start,
demux->segment_stop, GST_DEBUG_PAD_NAME (demux->src[i]->pad));
if (!demux->segment_play)
goto eos_and_pause;
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_segment_done (GST_OBJECT (demux), GST_FORMAT_TIME,
demux->segment_stop));
goto pause;
}
}
}
if (ebml->offset == gst_ebml_read_get_length (ebml)) {
if (demux->segment_play) {
GST_LOG ("Reached end of stream and segment, posting message");
gst_element_post_message (GST_ELEMENT (demux),
gst_message_new_segment_done (GST_OBJECT (demux), GST_FORMAT_TIME,
demux->duration));
goto pause;
}
GST_LOG ("Reached end of stream, sending EOS");
goto eos_and_pause;
}
if (ret == FALSE) {
GST_LOG ("Error processing stream, sending EOS");
goto eos_and_pause;
}
/* all is fine */
gst_object_unref (demux);
return;
eos_and_pause:
gst_matroska_demux_send_event (demux, gst_event_new_eos ());
/* fallthrough */
pause:
GST_LOG_OBJECT (demux, "pausing task");
gst_pad_pause_task (demux->sinkpad);
gst_object_unref (demux);
}
static gboolean
gst_matroska_demux_sink_activate (GstPad * sinkpad)
{
if (gst_pad_check_pull_range (sinkpad))
return gst_pad_activate_pull (sinkpad, TRUE);
return FALSE;
}
static gboolean
gst_matroska_demux_sink_activate_pull (GstPad * sinkpad, gboolean active)
{
if (active) {
/* if we have a scheduler we can start the task */
gst_pad_start_task (sinkpad, (GstTaskFunction) gst_matroska_demux_loop,
sinkpad);
} else {
gst_pad_stop_task (sinkpad);
}
return TRUE;
}
static GstCaps *
gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
videocontext, const gchar * codec_id, gpointer data, guint size,
gchar ** codec_name)
{
GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) videocontext;
GstCaps *caps = NULL;
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;
if (data) {
GstBuffer *buf = NULL;
vids = (gst_riff_strf_vids *) data;
/* assure size is big enough */
if (size < 24) {
GST_WARNING ("Too small BITMAPINFOHEADER (%d bytes)", size);
return NULL;
}
if (size < sizeof (gst_riff_strf_vids)) {
vids =
(gst_riff_strf_vids *) g_realloc (vids,
sizeof (gst_riff_strf_vids));
}
/* little-endian -> byte-order */
vids->size = GUINT32_FROM_LE (vids->size);
vids->width = GUINT32_FROM_LE (vids->width);
vids->height = GUINT32_FROM_LE (vids->height);
vids->planes = GUINT16_FROM_LE (vids->planes);
vids->bit_cnt = GUINT16_FROM_LE (vids->bit_cnt);
vids->compression = GUINT32_FROM_LE (vids->compression);
vids->image_size = GUINT32_FROM_LE (vids->image_size);
vids->xpels_meter = GUINT32_FROM_LE (vids->xpels_meter);
vids->ypels_meter = GUINT32_FROM_LE (vids->ypels_meter);
vids->num_colors = GUINT32_FROM_LE (vids->num_colors);
vids->imp_colors = GUINT32_FROM_LE (vids->imp_colors);
if (size > sizeof (gst_riff_strf_vids)) { /* some extra_data */
buf = gst_buffer_new_and_alloc (size - sizeof (gst_riff_strf_vids));
memcpy (GST_BUFFER_DATA (buf),
(guint8 *) vids + sizeof (gst_riff_strf_vids),
GST_BUFFER_SIZE (buf));
}
caps = gst_riff_create_video_caps (vids->compression, NULL, vids,
buf, NULL, codec_name);
if (buf)
gst_buffer_unref (buf);
}
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_UNCOMPRESSED)) {
guint32 fourcc = 0;
/* how nice, this is undocumented... */
switch (videocontext->fourcc) {
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
*codec_name = g_strdup ("Raw planar YUV 4:2:0");
fourcc = videocontext->fourcc;
break;
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
*codec_name = g_strdup ("Raw packed YUV 4:2:2");
fourcc = videocontext->fourcc;
break;
default:
GST_DEBUG ("Unknown fourcc %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (videocontext->fourcc));
return NULL;
}
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, fourcc, NULL);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_SP)) {
caps = gst_caps_new_simple ("video/x-divx",
"divxversion", G_TYPE_INT, 4, NULL);
*codec_name = g_strdup ("MPEG-4 simple profile");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AP)) {
#if 0
caps = gst_caps_new_full (gst_structure_new ("video/x-divx",
"divxversion", G_TYPE_INT, 5, NULL),
gst_structure_new ("video/x-xvid", NULL),
gst_structure_new ("video/mpeg",
"mpegversion", G_TYPE_INT, 4,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL), NULL);
#endif
caps = gst_caps_new_simple ("video/mpeg",
"mpegversion", G_TYPE_INT, 4,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP))
*codec_name = g_strdup ("MPEG-4 advanced simple profile");
else
*codec_name = g_strdup ("MPEG-4 advanced profile");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MSMPEG4V3)) {
#if 0
caps = gst_caps_new_full (gst_structure_new ("video/x-divx",
"divxversion", G_TYPE_INT, 3, NULL),
gst_structure_new ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 43, NULL), NULL);
#endif
caps = gst_caps_new_simple ("video/x-msmpeg",
"msmpegversion", G_TYPE_INT, 43, NULL);
*codec_name = g_strdup ("Microsoft MPEG-4 v.3");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG1) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG2)) {
gint mpegversion = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG1))
mpegversion = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG2))
mpegversion = 2;
else
g_assert_not_reached ();
caps = gst_caps_new_simple ("video/mpeg",
"systemstream", G_TYPE_BOOLEAN, FALSE,
"mpegversion", G_TYPE_INT, mpegversion, NULL);
*codec_name = g_strdup_printf ("MPEG-%d video", mpegversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MJPEG)) {
caps = gst_caps_new_simple ("image/jpeg", NULL);
*codec_name = g_strdup ("Motion-JPEG");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AVC)) {
caps = gst_caps_new_simple ("video/x-h264", NULL);
if (data) {
GstBuffer *priv = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (priv), data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
gst_buffer_unref (priv);
}
*codec_name = g_strdup ("H264");
} else if ((!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4))) {
gint rmversion = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1))
rmversion = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2))
rmversion = 2;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3))
rmversion = 3;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4))
rmversion = 4;
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;
}
if (caps != NULL) {
int i;
GstStructure *structure;
for (i = 0; i < gst_caps_get_size (caps); i++) {
structure = gst_caps_get_structure (caps, i);
GST_DEBUG ("video size %dx%d, target display size %dx%d (any unit)",
videocontext->pixel_width,
videocontext->pixel_height,
videocontext->display_width, videocontext->display_height);
/* pixel width and height are the w and h of the video in pixels */
if (videocontext->pixel_width > 0 && videocontext->pixel_height > 0) {
gint w = videocontext->pixel_width;
gint h = videocontext->pixel_height;
gst_structure_set (structure,
"width", G_TYPE_INT, w, "height", G_TYPE_INT, h, NULL);
}
if (videocontext->display_width > 0 && videocontext->display_height > 0) {
int n, d;
/* calculate the pixel aspect ratio using the display and pixel w/h */
n = videocontext->display_width * videocontext->pixel_height;
d = videocontext->display_height * videocontext->pixel_width;
GST_DEBUG ("setting PAR to %d/%d", n, d);
gst_structure_set (structure, "pixel-aspect-ratio",
GST_TYPE_FRACTION,
videocontext->display_width * videocontext->pixel_height,
videocontext->display_height * videocontext->pixel_width, NULL);
}
if (context->default_duration > 0) {
GValue fps_double = { 0 };
GValue fps_fraction = { 0 };
g_value_init (&fps_double, G_TYPE_DOUBLE);
g_value_init (&fps_fraction, GST_TYPE_FRACTION);
g_value_set_double (&fps_double,
gst_guint64_to_gdouble (GST_SECOND / context->default_duration));
g_value_transform (&fps_double, &fps_fraction);
gst_structure_set_value (structure, "framerate", &fps_fraction);
g_value_unset (&fps_double);
g_value_unset (&fps_fraction);
} else {
/* sort of a hack to get most codecs to support,
* even if the default_duration is missing */
gst_structure_set (structure, "framerate", GST_TYPE_FRACTION,
25, 1, NULL);
}
}
gst_caps_do_simplify (caps);
}
return caps;
}
/*
* Some AAC specific code... *sigh*
*/
static gint
aac_rate_idx (gint rate)
{
if (92017 <= rate)
return 0;
else if (75132 <= rate)
return 1;
else if (55426 <= rate)
return 2;
else if (46009 <= rate)
return 3;
else if (37566 <= rate)
return 4;
else if (27713 <= rate)
return 5;
else if (23004 <= rate)
return 6;
else if (18783 <= rate)
return 7;
else if (13856 <= rate)
return 8;
else if (11502 <= rate)
return 9;
else if (9391 <= rate)
return 10;
else
return 11;
}
static gint
aac_profile_idx (const gchar * codec_id)
{
gint profile;
if (strlen (codec_id) <= 12)
profile = 3;
else if (!strncmp (&codec_id[12], "MAIN", 4))
profile = 0;
else if (!strncmp (&codec_id[12], "LC", 2))
profile = 1;
else if (!strncmp (&codec_id[12], "SSR", 3))
profile = 2;
else
profile = 3;
return profile;
}
#define AAC_SYNC_EXTENSION_TYPE 0x02b7
static GstCaps *
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)) {
gint layer = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1))
layer = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2))
layer = 2;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3))
layer = 3;
else
g_assert_not_reached ();
caps = gst_caps_new_simple ("audio/mpeg",
"mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, layer, NULL);
*codec_name = g_strdup_printf ("MPEG-1 layer %d", layer);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE) ||
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE)) {
gint endianness = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE))
endianness = G_BIG_ENDIAN;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE))
endianness = G_LITTLE_ENDIAN;
else
g_assert_not_reached ();
caps = gst_caps_new_simple ("audio/x-raw-int",
"width", G_TYPE_INT, audiocontext->bitdepth,
"depth", G_TYPE_INT, audiocontext->bitdepth,
"signed", G_TYPE_BOOLEAN, audiocontext->bitdepth == 8,
"endianness", G_TYPE_INT, endianness, NULL);
*codec_name = g_strdup_printf ("Raw %d-bit PCM audio",
audiocontext->bitdepth);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_FLOAT)) {
caps = gst_caps_new_simple ("audio/x-raw-float",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"width", G_TYPE_INT, audiocontext->bitdepth, NULL);
*codec_name = g_strdup_printf ("Raw %d-bit floating-point audio",
audiocontext->bitdepth);
} else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AC3,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_AC3))) {
caps = gst_caps_new_simple ("audio/x-ac3", NULL);
*codec_name = g_strdup ("AC-3 audio");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_DTS)) {
caps = gst_caps_new_simple ("audio/x-dts", NULL);
*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;
if (data) {
auds = (gst_riff_strf_auds *) data;
/* little-endian -> byte-order */
auds->format = GUINT16_FROM_LE (auds->format);
auds->channels = GUINT16_FROM_LE (auds->channels);
auds->rate = GUINT32_FROM_LE (auds->rate);
auds->av_bps = GUINT32_FROM_LE (auds->av_bps);
auds->blockalign = GUINT16_FROM_LE (auds->blockalign);
auds->size = GUINT16_FROM_LE (auds->size);
caps = gst_riff_create_audio_caps (auds->format, NULL, auds, NULL,
NULL, codec_name);
}
} else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG2,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_MPEG2)) ||
!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG4,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_MPEG4))) {
GstBuffer *priv = NULL;
gint mpegversion = -1;
gint rate_idx, profile;
guint8 *data;
/* make up decoderspecificdata */
priv = gst_buffer_new_and_alloc (5);
data = GST_BUFFER_DATA (priv);
rate_idx = aac_rate_idx (audiocontext->samplerate);
profile = aac_profile_idx (codec_id);
data[0] = ((profile + 1) << 3) | ((rate_idx & 0xE) >> 1);
data[1] = ((rate_idx & 0x1) << 7) | (audiocontext->channels << 3);
GST_BUFFER_SIZE (priv) = 2;
if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG2,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_MPEG2))) {
mpegversion = 2;
} else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG4,
strlen (GST_MATROSKA_CODEC_ID_AUDIO_MPEG4))) {
mpegversion = 4;
if (g_strrstr (codec_id, "SBR")) {
/* HE-AAC (aka SBR AAC) */
audiocontext->samplerate *= 2;
rate_idx = aac_rate_idx (audiocontext->samplerate);
data[2] = AAC_SYNC_EXTENSION_TYPE >> 3;
data[3] = ((AAC_SYNC_EXTENSION_TYPE & 0x07) << 5) | 5;
data[4] = (1 << 7) | (rate_idx << 3);
GST_BUFFER_SIZE (priv) = 5;
}
} else {
g_assert_not_reached ();
}
caps = gst_caps_new_simple ("audio/mpeg",
"mpegversion", G_TYPE_INT, mpegversion,
"framed", G_TYPE_BOOLEAN, TRUE, NULL);
if (priv) {
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
}
*codec_name = g_strdup_printf ("MPEG-%d AAC audio", mpegversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_TTA)) {
caps = gst_caps_new_simple ("audio/x-tta",
"width", G_TYPE_INT, audiocontext->bitdepth, NULL);
*codec_name = g_strdup ("TTA audio");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_WAVPACK4)) {
caps = gst_caps_new_simple ("audio/x-wavpack",
"width", G_TYPE_INT, audiocontext->bitdepth,
"framed", G_TYPE_BOOLEAN, TRUE, NULL);
*codec_name = g_strdup ("Wavpack audio");
} else if ((!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4)) ||
(!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_COOK))) {
gint raversion = -1;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4))
raversion = 1;
else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_COOK))
raversion = 8;
else
raversion = 2;
caps = gst_caps_new_simple ("audio/x-pn-realaudio",
"raversion", G_TYPE_INT, raversion, NULL);
*codec_name = g_strdup_printf ("RealAudio %d.0", raversion);
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_SIPR)) {
caps = gst_caps_new_simple ("audio/x-sipro", NULL);
*codec_name = g_strdup ("Sipro/ACELP.NET Voice Codec");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_RALF)) {
caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL);
*codec_name = g_strdup ("Real Audio Lossless");
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_ATRC)) {
caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL);
*codec_name = g_strdup ("Sony ATRAC3");
} else {
GST_WARNING ("Unknown codec '%s', cannot build Caps", codec_id);
return NULL;
}
if (caps != NULL) {
if (audiocontext->samplerate > 0 && audiocontext->channels > 0) {
gint i;
for (i = 0; i < gst_caps_get_size (caps); i++) {
gst_structure_set (gst_caps_get_structure (caps, i),
"channels", G_TYPE_INT, audiocontext->channels,
"rate", G_TYPE_INT, audiocontext->samplerate, NULL);
}
}
gst_caps_do_simplify (caps);
}
return caps;
}
static GstCaps *
gst_matroska_demux_complex_caps (GstMatroskaTrackComplexContext *
complexcontext, const gchar * codec_id, gpointer data, guint size)
{
GstCaps *caps = NULL;
GST_DEBUG ("Unknown complex stream: codec_id='%s'", codec_id);
return caps;
}
static GstCaps *
gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
subtitlecontext, const gchar * codec_id, gpointer data, guint size)
{
GstCaps *caps = NULL;
/* for backwards compatibility */
if (!g_ascii_strcasecmp (codec_id, "S_TEXT/ASCII"))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8;
else if (!g_ascii_strcasecmp (codec_id, "S_SSA"))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_SSA;
else if (!g_ascii_strcasecmp (codec_id, "S_ASS"))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_ASS;
else if (!g_ascii_strcasecmp (codec_id, "S_USF"))
codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_USF;
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8)) {
caps = gst_caps_new_simple ("text/plain", NULL);
subtitlecontext->check_utf8 = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_SSA)) {
caps = gst_caps_new_simple ("application/x-ssa", NULL);
subtitlecontext->check_utf8 = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_ASS)) {
caps = gst_caps_new_simple ("application/x-ass", NULL);
subtitlecontext->check_utf8 = TRUE;
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_USF)) {
caps = gst_caps_new_simple ("application/x-usf", NULL);
subtitlecontext->check_utf8 = TRUE;
} else {
GST_DEBUG ("Unknown subtitle stream: codec_id='%s'", codec_id);
caps = gst_caps_new_simple ("application/x-subtitle-unknown", NULL);
subtitlecontext->check_utf8 = FALSE;
}
if (data != NULL && size > 0) {
GstBuffer *buf;
buf = gst_buffer_new_and_alloc (size);
memcpy (GST_BUFFER_DATA (buf), data, size);
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
}
return caps;
}
static GstStateChangeReturn
gst_matroska_demux_change_state (GstElement * element,
GstStateChange transition)
{
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
/* handle upwards state changes here */
switch (transition) {
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
/* handle downwards state changes */
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_matroska_demux_reset (GST_ELEMENT (demux));
break;
default:
break;
}
return ret;
}
gboolean
gst_matroska_demux_plugin_init (GstPlugin * plugin)
{
gst_riff_init ();
/* create an elementfactory for the matroska_demux element */
if (!gst_element_register (plugin, "matroskademux",
GST_RANK_PRIMARY, GST_TYPE_MATROSKA_DEMUX))
return FALSE;
return TRUE;
}
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