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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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7ebd7b97d4
Original commit message from CVS: 2005-09-02 Andy Wingo <wingo@pobox.com> * All plugins updated for element state changes.
2970 lines
84 KiB
C
2970 lines
84 KiB
C
/* GStreamer Matroska muxer/demuxer
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* (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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*
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* matroska-demux.c: matroska file/stream demuxer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <math.h>
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#include <string.h>
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/* For AVI compatibility mode... Who did that? */
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#include <gst/riff/riff-ids.h>
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#include <gst/riff/riff-media.h>
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#include "matroska-demux.h"
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#include "matroska-ids.h"
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GST_DEBUG_CATEGORY (matroskademux_debug);
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#define GST_CAT_DEFAULT matroskademux_debug
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enum
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{
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/* FILL ME */
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LAST_SIGNAL
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};
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enum
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{
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ARG_0,
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ARG_METADATA,
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ARG_STREAMINFO
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/* FILL ME */
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};
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static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-matroska")
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);
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/* gobject magic foo */
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static void gst_matroska_demux_base_init (GstMatroskaDemuxClass * klass);
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static void gst_matroska_demux_class_init (GstMatroskaDemuxClass * klass);
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static void gst_matroska_demux_init (GstMatroskaDemux * demux);
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/* element functions */
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static void gst_matroska_demux_loop (GstElement * element);
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static gboolean gst_matroska_demux_send_event (GstElement * element,
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GstEvent * event);
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/* pad functions */
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static const GstEventMask *gst_matroska_demux_get_event_mask (GstPad * pad);
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static gboolean gst_matroska_demux_handle_src_event (GstPad * pad,
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GstEvent * event);
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static const GstFormat *gst_matroska_demux_get_src_formats (GstPad * pad);
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static const GstQueryType *gst_matroska_demux_get_src_query_types (GstPad *
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pad);
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static gboolean gst_matroska_demux_handle_src_query (GstPad * pad,
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GstQueryType type, GstFormat * format, gint64 * value);
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/* gst internal change state handler */
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static GstStateChangeReturn
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gst_matroska_demux_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_matroska_demux_set_clock (GstElement * element,
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GstClock * clock);
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/* caps functions */
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static GstCaps *gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext
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* videocontext,
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const gchar * codec_id,
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gpointer data, guint size, GstMatroskaDemux * demux);
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static GstCaps *gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext
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* audiocontext,
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const gchar * codec_id,
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gpointer data, guint size, GstMatroskaDemux * demux);
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static GstCaps *gst_matroska_demux_complex_caps (GstMatroskaTrackComplexContext
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* complexcontext, const gchar * codec_id, gpointer data, guint size);
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static GstCaps
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* gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
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subtitlecontext, const gchar * codec_id, gpointer data, guint size);
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/* stream methods */
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static void gst_matroska_demux_reset (GstElement * element);
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static GstEbmlReadClass *parent_class = NULL;
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static GstPadTemplate *videosrctempl, *audiosrctempl, *subtitlesrctempl;
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/*static guint gst_matroska_demux_signals[LAST_SIGNAL] = { 0 };*/
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GType
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gst_matroska_demux_get_type (void)
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{
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static GType gst_matroska_demux_type = 0;
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if (!gst_matroska_demux_type) {
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static const GTypeInfo gst_matroska_demux_info = {
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sizeof (GstMatroskaDemuxClass),
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(GBaseInitFunc) gst_matroska_demux_base_init,
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NULL,
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(GClassInitFunc) gst_matroska_demux_class_init,
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NULL,
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NULL,
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sizeof (GstMatroskaDemux),
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0,
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(GInstanceInitFunc) gst_matroska_demux_init,
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};
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gst_matroska_demux_type =
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g_type_register_static (GST_TYPE_EBML_READ,
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"GstMatroskaDemux", &gst_matroska_demux_info, 0);
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}
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return gst_matroska_demux_type;
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}
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static void
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gst_matroska_demux_base_init (GstMatroskaDemuxClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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static GstElementDetails gst_matroska_demux_details = {
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"Matroska demuxer",
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"Codec/Demuxer",
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"Demuxes a Matroska Stream into video/audio/subtitles",
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"Ronald Bultje <rbultje@ronald.bitfreak.net>"
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};
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gst_element_class_add_pad_template (element_class, videosrctempl);
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gst_element_class_add_pad_template (element_class, audiosrctempl);
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gst_element_class_add_pad_template (element_class, subtitlesrctempl);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_templ));
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gst_element_class_set_details (element_class, &gst_matroska_demux_details);
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}
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static void
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gst_matroska_demux_class_init (GstMatroskaDemuxClass * klass)
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{
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GstElementClass *gstelement_class;
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gstelement_class = (GstElementClass *) klass;
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parent_class = g_type_class_ref (GST_TYPE_EBML_READ);
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gstelement_class->change_state = gst_matroska_demux_change_state;
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gstelement_class->send_event = gst_matroska_demux_send_event;
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gstelement_class->set_clock = gst_matroska_demux_set_clock;
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GST_DEBUG_CATEGORY_INIT (matroskademux_debug, "matroskademux", 0,
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"Matroska demuxer");
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}
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static void
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gst_matroska_demux_init (GstMatroskaDemux * demux)
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{
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GstElementClass *klass = GST_ELEMENT_GET_CLASS (demux);
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gint i;
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GST_FLAG_SET (GST_OBJECT (demux), GST_ELEMENT_EVENT_AWARE);
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demux->sinkpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
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"sink"), "sink");
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gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
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GST_EBML_READ (demux)->sinkpad = demux->sinkpad;
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gst_element_set_loop_function (GST_ELEMENT (demux), gst_matroska_demux_loop);
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/* initial stream no. */
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for (i = 0; i < GST_MATROSKA_DEMUX_MAX_STREAMS; i++) {
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demux->src[i] = NULL;
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}
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demux->writing_app = demux->muxing_app = NULL;
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demux->index = NULL;
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/* finish off */
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gst_matroska_demux_reset (GST_ELEMENT (demux));
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}
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static void
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gst_matroska_demux_reset (GstElement * element)
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{
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GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
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guint i;
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/* reset input */
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demux->state = GST_MATROSKA_DEMUX_STATE_START;
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/* clean up existing streams */
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for (i = 0; i < GST_MATROSKA_DEMUX_MAX_STREAMS; i++) {
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if (demux->src[i] != NULL) {
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if (demux->src[i]->pad != NULL) {
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gst_element_remove_pad (GST_ELEMENT (demux), demux->src[i]->pad);
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}
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g_free (demux->src[i]->codec_id);
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g_free (demux->src[i]->codec_name);
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g_free (demux->src[i]->name);
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g_free (demux->src[i]->language);
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g_free (demux->src[i]->codec_priv);
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g_free (demux->src[i]);
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demux->src[i] = NULL;
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}
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}
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demux->num_streams = 0;
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demux->num_a_streams = 0;
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demux->num_t_streams = 0;
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demux->num_v_streams = 0;
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/* reset media info */
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g_free (demux->writing_app);
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demux->writing_app = NULL;
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g_free (demux->muxing_app);
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demux->muxing_app = NULL;
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/* reset indexes */
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demux->num_indexes = 0;
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g_free (demux->index);
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demux->index = NULL;
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/* reset timers */
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demux->clock = NULL;
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demux->time_scale = 1000000;
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demux->duration = 0;
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demux->pos = 0;
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demux->created = G_MININT64;
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demux->seek_pending = GST_CLOCK_TIME_NONE;
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demux->metadata_parsed = FALSE;
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demux->index_parsed = FALSE;
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}
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static void
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gst_matroska_demux_set_clock (GstElement * element, GstClock * clock)
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{
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GST_MATROSKA_DEMUX (element)->clock = clock;
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}
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static gint
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gst_matroska_demux_stream_from_num (GstMatroskaDemux * demux, guint track_num)
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{
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guint n;
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for (n = 0; n < demux->num_streams; n++) {
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if (demux->src[n] != NULL && demux->src[n]->num == track_num) {
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return n;
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}
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}
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if (n == demux->num_streams) {
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GST_WARNING ("Failed to find corresponding pad for tracknum %d", track_num);
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}
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return -1;
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}
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static GstCaps *
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gst_matroska_demux_src_getcaps (GstPad * pad)
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{
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GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
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guint n;
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for (n = 0; n < demux->num_streams; n++) {
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if (demux->src[n] != NULL && demux->src[n]->pad == pad) {
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break;
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}
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}
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if (n == demux->num_streams)
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return gst_caps_new_empty ();
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return gst_caps_copy (demux->src[n]->caps);
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}
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static gboolean
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gst_matroska_demux_add_stream (GstMatroskaDemux * demux)
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{
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GstElementClass *klass = GST_ELEMENT_GET_CLASS (demux);
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GstEbmlRead *ebml = GST_EBML_READ (demux);
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GstMatroskaTrackContext *context;
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GstPadTemplate *templ = NULL;
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GstCaps *caps = NULL;
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gchar *padname = NULL;
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gboolean res = TRUE;
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guint32 id;
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if (demux->num_streams >= GST_MATROSKA_DEMUX_MAX_STREAMS) {
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GST_WARNING ("Maximum number of streams (%d) exceeded, skipping",
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GST_MATROSKA_DEMUX_MAX_STREAMS);
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return gst_ebml_read_skip (ebml); /* skip-and-continue */
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}
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/* allocate generic... if we know the type, we'll g_renew()
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* with the precise type */
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context = g_new0 (GstMatroskaTrackContext, 1);
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demux->src[demux->num_streams] = context;
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context->index = demux->num_streams;
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context->type = 0; /* no type yet */
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context->default_duration = 0;
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context->pos = 0;
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demux->num_streams++;
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/* start with the master */
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if (!gst_ebml_read_master (ebml, &id))
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return FALSE;
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/* try reading the trackentry headers */
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while (res) {
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if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
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res = FALSE;
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break;
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} else if (demux->level_up > 0) {
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demux->level_up--;
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break;
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}
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switch (id) {
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/* track number (unique stream ID) */
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case GST_MATROSKA_ID_TRACKNUMBER:{
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guint64 num;
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if (!gst_ebml_read_uint (ebml, &id, &num)) {
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res = FALSE;
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break;
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}
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context->num = num;
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break;
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}
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/* track UID (unique identifier) */
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case GST_MATROSKA_ID_TRACKUID:{
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guint64 num;
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if (!gst_ebml_read_uint (ebml, &id, &num)) {
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res = FALSE;
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break;
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}
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context->uid = num;
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break;
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}
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/* track type (video, audio, combined, subtitle, etc.) */
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case GST_MATROSKA_ID_TRACKTYPE:{
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guint64 num;
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if (context->type != 0) {
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GST_WARNING
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("More than one tracktype defined in a trackentry - skipping");
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break;
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}
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if (!gst_ebml_read_uint (ebml, &id, &num)) {
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res = FALSE;
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break;
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}
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context->type = num;
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/* ok, so we're actually going to reallocate this thing */
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switch (context->type) {
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case GST_MATROSKA_TRACK_TYPE_VIDEO:
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context = (GstMatroskaTrackContext *)
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g_renew (GstMatroskaTrackVideoContext, context, 1);
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break;
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case GST_MATROSKA_TRACK_TYPE_AUDIO:
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context = (GstMatroskaTrackContext *)
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g_renew (GstMatroskaTrackAudioContext, context, 1);
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/* defaults */
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((GstMatroskaTrackAudioContext *) context)->channels = 1;
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((GstMatroskaTrackAudioContext *) context)->samplerate = 8000;
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break;
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case GST_MATROSKA_TRACK_TYPE_COMPLEX:
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context = (GstMatroskaTrackContext *)
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g_renew (GstMatroskaTrackComplexContext, context, 1);
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break;
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case GST_MATROSKA_TRACK_TYPE_SUBTITLE:
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context = (GstMatroskaTrackContext *)
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g_renew (GstMatroskaTrackSubtitleContext, context, 1);
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break;
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case GST_MATROSKA_TRACK_TYPE_LOGO:
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case GST_MATROSKA_TRACK_TYPE_CONTROL:
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default:
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GST_WARNING ("Unknown or unsupported track type 0x%x",
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context->type);
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context->type = 0;
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break;
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}
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demux->src[demux->num_streams - 1] = context;
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break;
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}
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/* tracktype specific stuff for video */
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case GST_MATROSKA_ID_TRACKVIDEO:{
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GstMatroskaTrackVideoContext *videocontext;
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if (context->type != GST_MATROSKA_TRACK_TYPE_VIDEO) {
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GST_WARNING
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("trackvideo EBML entry in non-video track - ignoring track");
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res = FALSE;
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break;
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} else if (!gst_ebml_read_master (ebml, &id)) {
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res = FALSE;
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break;
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}
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videocontext = (GstMatroskaTrackVideoContext *) context;
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while (res) {
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if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
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res = FALSE;
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break;
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} else if (demux->level_up > 0) {
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demux->level_up--;
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break;
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}
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switch (id) {
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/* fixme, this should be one-up, but I get it here (?) */
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case GST_MATROSKA_ID_TRACKDEFAULTDURATION:{
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guint64 num;
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if (!gst_ebml_read_uint (ebml, &id, &num)) {
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res = FALSE;
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break;
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}
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context->default_duration = num;
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break;
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}
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/* video framerate */
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case GST_MATROSKA_ID_VIDEOFRAMERATE:{
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gdouble num;
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if (!gst_ebml_read_float (ebml, &id, &num)) {
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res = FALSE;
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break;
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}
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context->default_duration = GST_SECOND * (1. / num);
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break;
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}
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/* width of the size to display the video at */
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case GST_MATROSKA_ID_VIDEODISPLAYWIDTH:{
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guint64 num;
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if (!gst_ebml_read_uint (ebml, &id, &num)) {
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res = FALSE;
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break;
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}
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videocontext->display_width = num;
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GST_DEBUG ("display_width %" G_GUINT64_FORMAT, num);
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break;
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}
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/* height of the size to display the video at */
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case GST_MATROSKA_ID_VIDEODISPLAYHEIGHT:{
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guint64 num;
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if (!gst_ebml_read_uint (ebml, &id, &num)) {
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res = FALSE;
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break;
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}
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videocontext->display_height = num;
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GST_DEBUG ("display_height %" G_GUINT64_FORMAT, num);
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break;
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}
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/* 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 (context->type != GST_MATROSKA_TRACK_TYPE_AUDIO) {
|
|
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;
|
|
|
|
while (res) {
|
|
if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
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;
|
|
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;
|
|
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;
|
|
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, demux);
|
|
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, demux);
|
|
audiocontext->first_frame = TRUE;
|
|
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 (0);
|
|
}
|
|
|
|
/* the pad in here */
|
|
context->pad = gst_pad_new_from_template (templ, padname);
|
|
context->caps = caps ? caps : gst_caps_new_empty ();
|
|
|
|
g_free (padname);
|
|
|
|
/* set some functions */
|
|
gst_pad_set_formats_function (context->pad,
|
|
gst_matroska_demux_get_src_formats);
|
|
gst_pad_set_event_mask_function (context->pad,
|
|
gst_matroska_demux_get_event_mask);
|
|
gst_pad_set_event_function (context->pad,
|
|
gst_matroska_demux_handle_src_event);
|
|
gst_pad_set_query_type_function (context->pad,
|
|
gst_matroska_demux_get_src_query_types);
|
|
gst_pad_set_query_function (context->pad,
|
|
gst_matroska_demux_handle_src_query);
|
|
gst_pad_set_getcaps_function (context->pad, gst_matroska_demux_src_getcaps);
|
|
|
|
gst_element_add_pad (GST_ELEMENT (demux), context->pad);
|
|
|
|
/* tadaah! */
|
|
return TRUE;
|
|
}
|
|
|
|
static const GstFormat *
|
|
gst_matroska_demux_get_src_formats (GstPad * pad)
|
|
{
|
|
/*GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad)); */
|
|
|
|
/* we could try to look for units (i.e. samples) in audio streams
|
|
* or video streams, but both samplerate and framerate are not
|
|
* always constant, and since we only have a time indication, we
|
|
* cannot guarantee anything here based purely on index. So, we
|
|
* only support time for now. */
|
|
static const GstFormat src_formats[] = {
|
|
GST_FORMAT_TIME,
|
|
(GstFormat) 0
|
|
};
|
|
|
|
return src_formats;
|
|
}
|
|
|
|
static const GstQueryType *
|
|
gst_matroska_demux_get_src_query_types (GstPad * pad)
|
|
{
|
|
static const GstQueryType src_types[] = {
|
|
GST_QUERY_TOTAL,
|
|
GST_QUERY_POSITION,
|
|
(GstQueryType) 0
|
|
};
|
|
|
|
return src_types;
|
|
}
|
|
|
|
static gboolean
|
|
gst_matroska_demux_handle_src_query (GstPad * pad,
|
|
GstQueryType type, GstFormat * format, gint64 * value)
|
|
{
|
|
gboolean res = TRUE;
|
|
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad));
|
|
|
|
switch (type) {
|
|
case GST_QUERY_TOTAL:
|
|
switch (*format) {
|
|
case GST_FORMAT_TIME:
|
|
*value = demux->duration;
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case GST_QUERY_POSITION:
|
|
switch (*format) {
|
|
case GST_FORMAT_TIME:
|
|
*value = demux->pos;
|
|
break;
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstMatroskaIndex *
|
|
gst_matroskademux_seek (GstMatroskaDemux * demux)
|
|
{
|
|
guint entry = (guint) - 1;
|
|
guint64 offset = demux->seek_pending;
|
|
guint n;
|
|
|
|
/* make sure we don't seek twice */
|
|
demux->seek_pending = GST_CLOCK_TIME_NONE;
|
|
|
|
for (n = 0; n < demux->num_indexes; n++) {
|
|
if (entry == (guint) - 1) {
|
|
entry = n;
|
|
} else {
|
|
gfloat diff_old = fabs (1. * (demux->index[entry].time - offset)),
|
|
diff_new = fabs (1. * (demux->index[n].time - offset));
|
|
|
|
if (diff_new < diff_old) {
|
|
entry = n;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (entry != (guint) - 1) {
|
|
return &demux->index[entry];
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gboolean
|
|
gst_matroska_demux_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
|
|
gboolean res = TRUE;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
switch (GST_EVENT_SEEK_FORMAT (event)) {
|
|
case GST_FORMAT_TIME:
|
|
demux->seek_pending = GST_EVENT_SEEK_OFFSET (event);
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Only time seek is supported");
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unhandled event of type %d", GST_EVENT_TYPE (event));
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
static const GstEventMask *
|
|
gst_matroska_demux_get_event_mask (GstPad * pad)
|
|
{
|
|
static const GstEventMask masks[] = {
|
|
{GST_EVENT_SEEK, (GstEventFlag) ((gint) GST_SEEK_METHOD_SET |
|
|
(gint) GST_SEEK_FLAG_KEY_UNIT)},
|
|
{GST_EVENT_SEEK_SEGMENT, (GstEventFlag) ((gint) GST_SEEK_METHOD_SET |
|
|
(gint) GST_SEEK_FLAG_KEY_UNIT)},
|
|
{(GstEventType) 0, (GstEventFlag) 0}
|
|
};
|
|
|
|
return masks;
|
|
}
|
|
|
|
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_SEGMENT:
|
|
case GST_EVENT_SEEK:
|
|
return gst_matroska_demux_send_event (GST_ELEMENT (demux), event);
|
|
|
|
/* events we don't need to handle */
|
|
case GST_EVENT_NAVIGATION:
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unhandled event of type %d", GST_EVENT_TYPE (event));
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_matroska_demux_handle_seek_event (GstMatroskaDemux * demux)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
GstMatroskaIndex *entry = gst_matroskademux_seek (demux);
|
|
GstEvent *event;
|
|
guint i;
|
|
|
|
if (!entry)
|
|
return FALSE;
|
|
|
|
/* seek (relative to segment) */
|
|
if (!(event = gst_ebml_read_seek (ebml, entry->pos + demux->segment_start)))
|
|
return FALSE;
|
|
gst_event_unref (event); /* byte - we want time */
|
|
event =
|
|
gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, entry->time,
|
|
GST_FORMAT_UNDEFINED);
|
|
|
|
/* forward to all src pads */
|
|
for (i = 0; i < demux->num_streams; i++) {
|
|
if (GST_PAD_IS_USABLE (demux->src[i]->pad)) {
|
|
gst_event_ref (event);
|
|
gst_pad_push (demux->src[i]->pad, GST_DATA (event));
|
|
}
|
|
demux->src[i]->pos = entry->time;
|
|
}
|
|
demux->pos = entry->time;
|
|
|
|
gst_event_unref (event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
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 > 1) {
|
|
GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
|
|
("Demuxer version (1) is too old to read stream version %d", version));
|
|
return FALSE;
|
|
}
|
|
|
|
/* find segment, must be the next element */
|
|
while (1) {
|
|
guint last_level;
|
|
|
|
if (!(id = gst_ebml_peek_id (ebml, &last_level)))
|
|
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))
|
|
return FALSE;
|
|
/* seeks are from the beginning of the segment,
|
|
* after the segment ID/length */
|
|
demux->segment_start = gst_bytestream_tell (ebml->bs);
|
|
|
|
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 (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
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 (GstMatroskaDemux * demux, gboolean prevent_eos)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
gboolean res = TRUE;
|
|
guint32 id;
|
|
GstMatroskaIndex idx;
|
|
guint64 length = 0;
|
|
|
|
if (prevent_eos) {
|
|
length = gst_bytestream_length (ebml->bs);
|
|
}
|
|
|
|
while (res) {
|
|
/* 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 == gst_bytestream_tell (ebml->bs)) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
/* one single index entry ('point') */
|
|
case GST_MATROSKA_ID_POINTENTRY:
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
/* 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 (res) {
|
|
if (prevent_eos && length == gst_bytestream_tell (ebml->bs)) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
/* one single index entry ('point') */
|
|
case GST_MATROSKA_ID_CUETIME:{
|
|
gint64 time;
|
|
|
|
if (!gst_ebml_read_uint (ebml, &id, &time)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
idx.time = time * demux->time_scale;
|
|
break;
|
|
}
|
|
|
|
/* position in the file + track to which it belongs */
|
|
case GST_MATROSKA_ID_CUETRACKPOSITION:
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
while (res) {
|
|
if (prevent_eos && length == gst_bytestream_tell (ebml->bs)) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else 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)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
idx.track = num;
|
|
break;
|
|
}
|
|
|
|
/* position in file */
|
|
case GST_MATROSKA_ID_CUECLUSTERPOSITION:{
|
|
guint64 num;
|
|
|
|
if (!gst_ebml_read_uint (ebml, &id, &num)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
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))
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
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))
|
|
res = FALSE;
|
|
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);
|
|
}
|
|
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++;
|
|
}
|
|
|
|
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))
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_matroska_demux_parse_info (GstMatroskaDemux * demux)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
gboolean res = TRUE;
|
|
guint32 id;
|
|
|
|
while (res) {
|
|
if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
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 * 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;
|
|
}
|
|
|
|
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 (GstMatroskaDemux * demux,
|
|
gboolean prevent_eos)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
gboolean res = TRUE;
|
|
guint32 id;
|
|
guint64 length = 0;
|
|
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}
|
|
, {
|
|
NULL, NULL}
|
|
};
|
|
gint i;
|
|
gboolean have_tags = FALSE;
|
|
GstTagList *taglist = gst_tag_list_new ();
|
|
|
|
if (prevent_eos) {
|
|
length = gst_bytestream_length (ebml->bs);
|
|
}
|
|
|
|
while (res) {
|
|
/* 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 == gst_bytestream_tell (ebml->bs)) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
case GST_MATROSKA_ID_TAG:
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
while (res) {
|
|
/* read all sub-entries */
|
|
if (prevent_eos && length == gst_bytestream_tell (ebml->bs)) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
case GST_MATROSKA_ID_SIMPLETAG:{
|
|
gchar *tag = NULL, *value = NULL;
|
|
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
while (res) {
|
|
/* read all sub-entries */
|
|
if (prevent_eos && length == gst_bytestream_tell (ebml->bs)) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
case GST_MATROSKA_ID_TAGNAME:
|
|
g_free (tag);
|
|
res = gst_ebml_read_ascii (ebml, &id, &tag);
|
|
break;
|
|
|
|
case GST_MATROSKA_ID_TAGSTRING:
|
|
g_free (value);
|
|
res = gst_ebml_read_utf8 (ebml, &id, &value);
|
|
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))
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (tag && value) {
|
|
for (i = 0; tag_conv[i].matroska_tagname != NULL; i++) {
|
|
if (!strcmp (tag_conv[i].matroska_tagname, tag)) {
|
|
GValue src = { 0 }
|
|
, dest = {
|
|
0};
|
|
const gchar *type = tag_conv[i].gstreamer_tagname;
|
|
GType dest_type = gst_tag_get_type (type);
|
|
|
|
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 (taglist, GST_TAG_MERGE_APPEND,
|
|
type, &dest, NULL);
|
|
g_value_unset (&dest);
|
|
have_tags = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
g_free (tag);
|
|
g_free (value);
|
|
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))
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
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))
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (have_tags) {
|
|
const GList *padlist;
|
|
|
|
/* let the world know about this wonderful thing */
|
|
for (padlist = gst_element_get_pad_list (GST_ELEMENT (ebml));
|
|
padlist != NULL; padlist = padlist->next) {
|
|
if (GST_PAD_IS_SRC (padlist->data) && GST_PAD_IS_USABLE (padlist->data)) {
|
|
gst_pad_push (GST_PAD (padlist->data),
|
|
GST_DATA (gst_event_new_tag (taglist)));
|
|
}
|
|
}
|
|
gst_element_found_tags (GST_ELEMENT (ebml), taglist);
|
|
} else {
|
|
gst_tag_list_free (taglist);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* 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;
|
|
GstMatroskaTrackContext *context;
|
|
|
|
GST_DEBUG ("Sync to %" GST_TIME_FORMAT, GST_TIME_ARGS (demux->pos));
|
|
|
|
for (stream_nr = 0; stream_nr < demux->num_streams; stream_nr++) {
|
|
context = demux->src[stream_nr];
|
|
if (context->type != GST_MATROSKA_TRACK_TYPE_SUBTITLE)
|
|
continue;
|
|
GST_DEBUG ("Checking for resync on stream %d (%" GST_TIME_FORMAT ")",
|
|
stream_nr, GST_TIME_ARGS (context->pos));
|
|
|
|
/* does it lag? 1 second is a random treshold... */
|
|
if (context->pos + (GST_SECOND / 2) < demux->pos) {
|
|
/* send filler */
|
|
GstEvent *event;
|
|
|
|
event = gst_event_new_filler_stamped (context->pos,
|
|
demux->pos - context->pos);
|
|
context->pos = demux->pos;
|
|
|
|
/* sync */
|
|
GST_DEBUG ("Synchronizing stream %d with others by sending filler "
|
|
"at time %" GST_TIME_FORMAT " and duration %" GST_TIME_FORMAT
|
|
" to time %" GST_TIME_FORMAT, stream_nr,
|
|
GST_TIME_ARGS (context->pos),
|
|
GST_TIME_ARGS (demux->pos - context->pos),
|
|
GST_TIME_ARGS (demux->pos));
|
|
gst_pad_push (context->pad, GST_DATA (event));
|
|
}
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_matroska_demux_parse_blockgroup (GstMatroskaDemux * demux,
|
|
guint64 cluster_time)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
gboolean res = TRUE;
|
|
gboolean readblock = FALSE;
|
|
guint32 id;
|
|
guint64 block_duration = 0;
|
|
GstBuffer *buf = NULL;
|
|
gint stream = 0, n, laces = 0;
|
|
guint size = 0, *lace_size = NULL;
|
|
gint64 time = 0;
|
|
|
|
while (res) {
|
|
if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
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_BLOCK:{
|
|
guint8 *data;
|
|
gint flags = 0;
|
|
guint64 num;
|
|
|
|
if (!gst_ebml_read_buffer (ebml, &id, &buf)) {
|
|
res = FALSE;
|
|
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);
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
data += n;
|
|
size -= n;
|
|
|
|
/* fetch stream from num */
|
|
stream = gst_matroska_demux_stream_from_num (demux, num);
|
|
if (size <= 3 || stream < 0 || stream >= demux->num_streams) {
|
|
gst_buffer_unref (buf);
|
|
GST_WARNING ("Invalid stream %d or size %u", stream, size);
|
|
break;
|
|
}
|
|
if (!GST_PAD_IS_USABLE (demux->src[stream]->pad)) {
|
|
gst_buffer_unref (buf);
|
|
break;
|
|
}
|
|
|
|
/* time (relative to cluster time) */
|
|
time = (GINT16_FROM_BE (*(gint16 *) data)) * demux->time_scale;
|
|
data += 2;
|
|
size -= 2;
|
|
flags = *(guint8 *) 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) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
laces = (*(guint8 *) 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; res && n < laces - 1; n++) {
|
|
while (1) {
|
|
if (size == 0) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
temp = *(guint8 *) 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"));
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
data += n;
|
|
size -= n;
|
|
total = lace_size[0] = num;
|
|
for (n = 1; res && 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"));
|
|
res = FALSE;
|
|
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 (((GstMatroskaTrackAudioContext *) demux->src[stream])->first_frame
|
|
&& (!strcmp (demux->src[stream]->codec_id,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_VORBIS))) {
|
|
/* start of the stream and vorbis audio, need to send the codec_priv
|
|
* data as first three packets */
|
|
guchar *p;
|
|
guint32 offset, length;
|
|
gint i;
|
|
GstBuffer *priv;
|
|
|
|
((GstMatroskaTrackAudioContext *) demux->src[stream])->first_frame =
|
|
FALSE;
|
|
p = (unsigned char *) demux->src[stream]->codec_priv;
|
|
offset = 3;
|
|
for (i = 0; i < 2; i++) {
|
|
length = p[i + 1];
|
|
priv = gst_buffer_new_and_alloc (length);
|
|
memcpy (GST_BUFFER_DATA (priv), &p[offset], length);
|
|
gst_pad_push (demux->src[stream]->pad, GST_DATA (priv));
|
|
offset += length;
|
|
}
|
|
length = demux->src[stream]->codec_priv_size - offset;
|
|
priv = gst_buffer_new_and_alloc (length);
|
|
memcpy (GST_BUFFER_DATA (priv), &p[offset], length);
|
|
gst_pad_push (demux->src[stream]->pad, GST_DATA (priv));
|
|
}
|
|
|
|
readblock = TRUE;
|
|
break;
|
|
}
|
|
|
|
case GST_MATROSKA_ID_BLOCKDURATION:{
|
|
if (!gst_ebml_read_uint (ebml, &id, &block_duration)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case GST_MATROSKA_ID_REFERENCEBLOCK:{
|
|
/* FIXME: this segfaults
|
|
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))
|
|
res = FALSE;
|
|
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))
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (res && readblock) {
|
|
guint64 duration = 0;
|
|
|
|
if (block_duration) {
|
|
duration = block_duration * demux->time_scale;
|
|
} else if (demux->src[stream]->default_duration) {
|
|
duration = demux->src[stream]->default_duration;
|
|
}
|
|
for (n = 0; n < laces; n++) {
|
|
GstBuffer *sub;
|
|
|
|
if (lace_size[n] == 0)
|
|
continue;
|
|
|
|
sub = gst_buffer_create_sub (buf,
|
|
GST_BUFFER_SIZE (buf) - size, lace_size[n]);
|
|
|
|
if (cluster_time != GST_CLOCK_TIME_NONE) {
|
|
if (time < 0 && (-time) > cluster_time)
|
|
GST_BUFFER_TIMESTAMP (sub) = cluster_time;
|
|
else
|
|
GST_BUFFER_TIMESTAMP (sub) = cluster_time + time;
|
|
|
|
demux->pos = GST_BUFFER_TIMESTAMP (sub);
|
|
}
|
|
demux->src[stream]->pos = demux->pos;
|
|
gst_matroska_demux_sync_streams (demux);
|
|
|
|
/* FIXME: do all laces have the same lenght? */
|
|
if (duration) {
|
|
GST_BUFFER_DURATION (sub) = duration / laces;
|
|
demux->src[stream]->pos += GST_BUFFER_DURATION (sub);
|
|
}
|
|
GST_DEBUG ("Pushing data of size %d for stream %d, time=%"
|
|
GST_TIME_FORMAT " and duration=%" GST_TIME_FORMAT,
|
|
GST_BUFFER_SIZE (sub), stream,
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (sub)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (sub)));
|
|
gst_pad_push (demux->src[stream]->pad, GST_DATA (sub));
|
|
|
|
size -= lace_size[n];
|
|
}
|
|
}
|
|
|
|
if (readblock)
|
|
gst_buffer_unref (buf);
|
|
g_free (lace_size);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_matroska_demux_parse_cluster (GstMatroskaDemux * demux)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
gboolean res = TRUE;
|
|
guint32 id;
|
|
guint64 cluster_time = GST_CLOCK_TIME_NONE;
|
|
|
|
/* We seek after index/header parsing before doing a new
|
|
* buffer. So here. */
|
|
if (demux->seek_pending != GST_CLOCK_TIME_NONE) {
|
|
if (!gst_matroska_demux_handle_seek_event (demux))
|
|
return FALSE;
|
|
demux->seek_pending = GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
while (res) {
|
|
if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else 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)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
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)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
res = gst_matroska_demux_parse_blockgroup (demux, cluster_time);
|
|
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))
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_matroska_demux_parse_contents (GstMatroskaDemux * demux)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
gboolean res = TRUE;
|
|
guint32 id;
|
|
|
|
while (res) {
|
|
if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
case GST_MATROSKA_ID_SEEKENTRY:{
|
|
guint32 seek_id = 0;
|
|
guint64 seek_pos = (guint64) - 1, t;
|
|
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
|
|
while (res) {
|
|
if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
case GST_MATROSKA_ID_SEEKID:
|
|
if (!gst_ebml_read_uint (ebml, &id, &t))
|
|
res = FALSE;
|
|
seek_id = t;
|
|
break;
|
|
|
|
case GST_MATROSKA_ID_SEEKPOSITION:
|
|
if (!gst_ebml_read_uint (ebml, &id, &seek_pos))
|
|
res = FALSE;
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unknown seekhead ID 0x%x", 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;
|
|
}
|
|
}
|
|
|
|
if (!seek_id || seek_pos == (guint64) - 1) {
|
|
GST_WARNING ("Incomplete seekhead entry (0x%x/%"
|
|
G_GUINT64_FORMAT ")", seek_id, seek_pos);
|
|
break;
|
|
}
|
|
|
|
switch (seek_id) {
|
|
case GST_MATROSKA_ID_CUES:
|
|
case GST_MATROSKA_ID_TAGS:{
|
|
guint level_up = demux->level_up;
|
|
guint64 before_pos, length;
|
|
guint32 id_cache = ebml->id_cache;
|
|
GstEbmlLevel *level;
|
|
GstEvent *event;
|
|
|
|
/* remember */
|
|
length = gst_bytestream_length (ebml->bs);
|
|
before_pos = gst_bytestream_tell (ebml->bs);
|
|
|
|
/* check for validity */
|
|
if (seek_pos + demux->segment_start + 12 >= length) {
|
|
g_warning ("Seekhead reference lies outside file!");
|
|
break;
|
|
}
|
|
|
|
/* seek */
|
|
if (!(event = gst_ebml_read_seek (ebml,
|
|
seek_pos + demux->segment_start)))
|
|
return FALSE;
|
|
gst_event_unref (event);
|
|
|
|
/* 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 (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
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->segment_start);
|
|
goto finish;
|
|
}
|
|
|
|
/* read master + parse */
|
|
switch (id) {
|
|
case GST_MATROSKA_ID_CUES:
|
|
if (!gst_ebml_read_master (ebml, &id))
|
|
res = FALSE;
|
|
else if (!gst_matroska_demux_parse_index (demux, TRUE) &&
|
|
gst_bytestream_length (ebml->bs) !=
|
|
gst_bytestream_tell (ebml->bs))
|
|
res = FALSE;
|
|
else
|
|
demux->index_parsed = TRUE;
|
|
break;
|
|
case GST_MATROSKA_ID_TAGS:
|
|
if (!gst_ebml_read_master (ebml, &id))
|
|
res = FALSE;
|
|
else if (!gst_matroska_demux_parse_metadata (demux, TRUE) &&
|
|
gst_bytestream_length (ebml->bs) !=
|
|
gst_bytestream_tell (ebml->bs))
|
|
res = FALSE;
|
|
else
|
|
demux->metadata_parsed = TRUE;
|
|
break;
|
|
}
|
|
if (!res)
|
|
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 */
|
|
if (!(event = gst_ebml_read_seek (ebml, before_pos)))
|
|
return FALSE;
|
|
gst_event_unref (event);
|
|
demux->level_up = level_up;
|
|
ebml->id_cache = id_cache;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
GST_INFO ("Ignoring seekhead entry for ID=0x%x", seek_id);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
GST_WARNING ("Unknown seekhead ID 0x%x", 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_loop_stream (GstMatroskaDemux * demux)
|
|
{
|
|
GstEbmlRead *ebml = GST_EBML_READ (demux);
|
|
gboolean res = TRUE;
|
|
guint32 id;
|
|
|
|
/* we've found our segment, start reading the different contents in here */
|
|
while (res) {
|
|
if (!(id = gst_ebml_peek_id (ebml, &demux->level_up))) {
|
|
res = FALSE;
|
|
break;
|
|
} else if (demux->level_up) {
|
|
demux->level_up--;
|
|
break;
|
|
}
|
|
|
|
switch (id) {
|
|
/* stream info */
|
|
case GST_MATROSKA_ID_INFO:{
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
res = gst_matroska_demux_parse_info (demux);
|
|
break;
|
|
}
|
|
|
|
/* track info headers */
|
|
case GST_MATROSKA_ID_TRACKS:{
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
res = gst_matroska_demux_parse_tracks (demux);
|
|
break;
|
|
}
|
|
|
|
/* stream index */
|
|
case GST_MATROSKA_ID_CUES:{
|
|
if (!demux->index_parsed) {
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
res = gst_matroska_demux_parse_index (demux, FALSE);
|
|
} else
|
|
res = gst_ebml_read_skip (ebml);
|
|
break;
|
|
}
|
|
|
|
/* metadata */
|
|
case GST_MATROSKA_ID_TAGS:{
|
|
if (!demux->index_parsed) {
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
res = gst_matroska_demux_parse_metadata (demux, FALSE);
|
|
} else
|
|
res = gst_ebml_read_skip (ebml);
|
|
break;
|
|
}
|
|
|
|
/* file index (if seekable, seek to Cues/Tags to parse it) */
|
|
case GST_MATROSKA_ID_SEEKHEAD:{
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
res = gst_matroska_demux_parse_contents (demux);
|
|
break;
|
|
}
|
|
|
|
case GST_MATROSKA_ID_CLUSTER:
|
|
if (demux->state != GST_MATROSKA_DEMUX_STATE_DATA) {
|
|
demux->state = GST_MATROSKA_DEMUX_STATE_DATA;
|
|
gst_element_no_more_pads (GST_ELEMENT (demux));
|
|
} else {
|
|
if (!gst_ebml_read_reserve (ebml)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
if (!gst_ebml_read_master (ebml, &id)) {
|
|
res = FALSE;
|
|
break;
|
|
}
|
|
/* 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. */
|
|
gst_matroska_demux_parse_cluster (demux);
|
|
res = FALSE;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
GST_WARNING ("Unknown matroska file header ID 0x%x", 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 void
|
|
gst_matroska_demux_loop (GstElement * element)
|
|
{
|
|
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
|
|
|
|
/* 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)) {
|
|
return;
|
|
}
|
|
demux->state = GST_MATROSKA_DEMUX_STATE_HEADER;
|
|
}
|
|
|
|
gst_matroska_demux_loop_stream (demux);
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext * videocontext,
|
|
const gchar * codec_id, gpointer data, guint size, GstMatroskaDemux * demux)
|
|
{
|
|
GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) videocontext;
|
|
GstCaps *caps = NULL;
|
|
|
|
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC)) {
|
|
gst_riff_strf_vids *vids = NULL;
|
|
|
|
if (data) {
|
|
char *codec_name = NULL;
|
|
GstTagList *list = gst_tag_list_new ();
|
|
|
|
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);
|
|
|
|
caps = gst_riff_create_video_caps (vids->compression, NULL, vids,
|
|
&codec_name);
|
|
gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
|
|
codec_name, NULL);
|
|
if (GST_IS_ELEMENT (demux))
|
|
gst_element_found_tags (GST_ELEMENT (demux), list);
|
|
gst_tag_list_free (list);
|
|
if (codec_name)
|
|
g_free (codec_name);
|
|
} else {
|
|
caps = gst_riff_create_video_template_caps ();
|
|
}
|
|
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_UNCOMPRESSED)) {
|
|
/* how nice, this is undocumented... */
|
|
if (videocontext != NULL) {
|
|
guint32 fourcc = 0;
|
|
|
|
switch (videocontext->fourcc) {
|
|
case GST_MAKE_FOURCC ('I', '4', '2', '0'):
|
|
case GST_MAKE_FOURCC ('Y', 'U', 'Y', '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 {
|
|
caps = gst_caps_from_string ("video/x-raw-yuv, "
|
|
"format = (fourcc) { I420, YUY2, YV12 }");
|
|
}
|
|
} 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);
|
|
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP) ||
|
|
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AP)) {
|
|
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);
|
|
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MSMPEG4V3)) {
|
|
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);
|
|
} 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 (0);
|
|
|
|
caps = gst_caps_new_simple ("video/mpeg",
|
|
"systemstream", G_TYPE_BOOLEAN, FALSE,
|
|
"mpegversion", G_TYPE_INT, mpegversion, NULL);
|
|
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MJPEG)) {
|
|
caps = gst_caps_new_simple ("video/x-jpeg", NULL);
|
|
} 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);
|
|
if (videocontext != NULL) {
|
|
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);
|
|
} else {
|
|
gst_structure_set (structure,
|
|
"width", GST_TYPE_INT_RANGE, 16, 4096,
|
|
"height", GST_TYPE_INT_RANGE, 16, 4096, 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) {
|
|
gfloat framerate = 1. * GST_SECOND / context->default_duration;
|
|
|
|
gst_structure_set (structure,
|
|
"framerate", G_TYPE_DOUBLE, framerate, NULL);
|
|
} else {
|
|
/* sort of a hack to get most codecs to support,
|
|
* even if the default_duration is missing */
|
|
gst_structure_set (structure, "framerate", G_TYPE_DOUBLE, 25.0, NULL);
|
|
}
|
|
} else {
|
|
gst_structure_set (structure,
|
|
"width", GST_TYPE_INT_RANGE, 16, 4096,
|
|
"height", GST_TYPE_INT_RANGE, 16, 4096,
|
|
"framerate", GST_TYPE_DOUBLE_RANGE, 0.0, G_MAXDOUBLE, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
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, GstMatroskaDemux * demux)
|
|
{
|
|
GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) audiocontext;
|
|
GstCaps *caps = NULL;
|
|
|
|
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 (0);
|
|
|
|
caps = gst_caps_new_simple ("audio/mpeg",
|
|
"mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, layer, NULL);
|
|
} 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 (0);
|
|
|
|
if (context != NULL) {
|
|
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, NULL);
|
|
} else {
|
|
caps = gst_caps_from_string ("audio/x-raw-int, "
|
|
"signed = (boolean) { TRUE, FALSE }, "
|
|
"depth = (int) { 8, 16 }, " "width = (int) { 8, 16 }");
|
|
}
|
|
gst_caps_set_simple (caps, "endianness", G_TYPE_INT, endianness, NULL);
|
|
} 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,
|
|
"buffer-frames", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
|
|
if (audiocontext != NULL) {
|
|
gst_caps_set_simple (caps,
|
|
"width", G_TYPE_INT, audiocontext->bitdepth, NULL);
|
|
} else {
|
|
gst_caps_set_simple (caps, "width", GST_TYPE_INT_RANGE, 32, 64, NULL);
|
|
}
|
|
} else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AC3,
|
|
strlen (GST_MATROSKA_CODEC_ID_AUDIO_AC3)) ||
|
|
!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_DTS)) {
|
|
caps = gst_caps_new_simple ("audio/x-ac3", NULL);
|
|
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS)) {
|
|
caps = gst_caps_new_simple ("audio/x-vorbis", NULL);
|
|
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_ACM)) {
|
|
gst_riff_strf_auds *auds = NULL;
|
|
|
|
if (data) {
|
|
char *codec_name = NULL;
|
|
GstTagList *list = gst_tag_list_new ();
|
|
|
|
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, &codec_name);
|
|
gst_tag_list_add (list, GST_TAG_MERGE_APPEND, GST_TAG_AUDIO_CODEC,
|
|
codec_name, NULL);
|
|
if (GST_IS_ELEMENT (demux))
|
|
gst_element_found_tags (GST_ELEMENT (demux), list);
|
|
gst_tag_list_free (list);
|
|
if (codec_name)
|
|
g_free (codec_name);
|
|
} else {
|
|
caps = gst_riff_create_audio_template_caps ();
|
|
}
|
|
} 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))) {
|
|
gint mpegversion = -1;
|
|
GstBuffer *priv = NULL;
|
|
|
|
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))) {
|
|
gint rate_idx, profile;
|
|
guint8 *data;
|
|
|
|
mpegversion = 4;
|
|
|
|
if (audiocontext) {
|
|
/* 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);
|
|
|
|
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);
|
|
} else {
|
|
GST_BUFFER_SIZE (priv) = 2;
|
|
}
|
|
}
|
|
} else
|
|
g_assert (0);
|
|
|
|
caps = gst_caps_new_simple ("audio/mpeg",
|
|
"mpegversion", G_TYPE_INT, mpegversion, NULL);
|
|
if (priv) {
|
|
gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL);
|
|
}
|
|
} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_TTA)) {
|
|
if (audiocontext != NULL) {
|
|
caps = gst_caps_new_simple ("audio/x-tta",
|
|
"width", G_TYPE_INT, audiocontext->bitdepth, NULL);
|
|
} else {
|
|
caps = gst_caps_from_string ("audio/x-tta, "
|
|
"width = (int) { 8, 16, 24 }");
|
|
}
|
|
} else {
|
|
GST_WARNING ("Unknown codec '%s', cannot build Caps", codec_id);
|
|
return NULL;
|
|
}
|
|
|
|
if (caps != NULL) {
|
|
GstStructure *structure;
|
|
int i;
|
|
|
|
for (i = 0; i < gst_caps_get_size (caps); i++) {
|
|
structure = gst_caps_get_structure (caps, i);
|
|
if (audiocontext != NULL) {
|
|
if (audiocontext->samplerate > 0 && audiocontext->channels > 0) {
|
|
gst_structure_set (structure,
|
|
"channels", G_TYPE_INT, audiocontext->channels,
|
|
"rate", G_TYPE_INT, audiocontext->samplerate, NULL);
|
|
}
|
|
} else {
|
|
gst_structure_set (structure,
|
|
"channels", GST_TYPE_INT_RANGE, 1, 6,
|
|
"rate", GST_TYPE_INT_RANGE, 4000, 96000, NULL);
|
|
}
|
|
}
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_matroska_demux_complex_caps (GstMatroskaTrackComplexContext *
|
|
complexcontext, const gchar * codec_id, gpointer data, guint size)
|
|
{
|
|
GstCaps *caps = NULL;
|
|
|
|
//..
|
|
|
|
return caps;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
|
|
subtitlecontext, const gchar * codec_id, gpointer data, guint size)
|
|
{
|
|
/*GstMatroskaTrackContext *context =
|
|
(GstMatroskaTrackContext *) subtitlecontext; */
|
|
GstCaps *caps = NULL;
|
|
|
|
if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8)) {
|
|
caps = gst_caps_new_simple ("text/plain", NULL);
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_matroska_demux_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_matroska_demux_reset (GST_ELEMENT (demux));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (((GstElementClass *) parent_class)->change_state)
|
|
return ((GstElementClass *) parent_class)->change_state (element,
|
|
transition);
|
|
|
|
return GST_STATE_CHANGE_SUCCESS;
|
|
}
|
|
|
|
gboolean
|
|
gst_matroska_demux_plugin_init (GstPlugin * plugin)
|
|
{
|
|
gint i;
|
|
GstCaps *videosrccaps, *audiosrccaps, *subtitlesrccaps, *temp;
|
|
const gchar *video_id[] = {
|
|
GST_MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC,
|
|
GST_MATROSKA_CODEC_ID_VIDEO_UNCOMPRESSED,
|
|
GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_SP,
|
|
GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP,
|
|
GST_MATROSKA_CODEC_ID_VIDEO_MSMPEG4V3,
|
|
GST_MATROSKA_CODEC_ID_VIDEO_MPEG1,
|
|
GST_MATROSKA_CODEC_ID_VIDEO_MPEG2,
|
|
GST_MATROSKA_CODEC_ID_VIDEO_MJPEG,
|
|
/* TODO: Real/Quicktime */
|
|
/* FILLME */
|
|
NULL,
|
|
}, *audio_id[] = {
|
|
GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_PCM_FLOAT,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_AC3,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_ACM,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_VORBIS,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_TTA,
|
|
GST_MATROSKA_CODEC_ID_AUDIO_MPEG2, GST_MATROSKA_CODEC_ID_AUDIO_MPEG4,
|
|
/* TODO: AC3-9/10, Real, Musepack, Quicktime */
|
|
/* FILLME */
|
|
NULL,}
|
|
, *complex_id[] = {
|
|
/* FILLME */
|
|
NULL,}
|
|
, *subtitle_id[] = {
|
|
GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8,
|
|
/* FILLME */
|
|
NULL,};
|
|
|
|
/* this filter needs the riff parser */
|
|
if (!gst_library_load ("gstbytestream") || !gst_library_load ("riff")) /* for fourcc stuff */
|
|
return FALSE;
|
|
|
|
/* video src template */
|
|
videosrccaps = gst_caps_new_empty ();
|
|
for (i = 0; video_id[i] != NULL; i++) {
|
|
temp = gst_matroska_demux_video_caps (NULL, video_id[i], NULL, 0, NULL);
|
|
gst_caps_append (videosrccaps, temp);
|
|
}
|
|
for (i = 0; complex_id[i] != NULL; i++) {
|
|
temp = gst_matroska_demux_complex_caps (NULL, video_id[i], NULL, 0);
|
|
gst_caps_append (videosrccaps, temp);
|
|
}
|
|
videosrctempl = gst_pad_template_new ("video_%02d",
|
|
GST_PAD_SRC, GST_PAD_SOMETIMES, videosrccaps);
|
|
|
|
audiosrccaps = gst_caps_new_empty ();
|
|
/* audio src template */
|
|
for (i = 0; audio_id[i] != NULL; i++) {
|
|
temp = gst_matroska_demux_audio_caps (NULL, audio_id[i], NULL, 0, NULL);
|
|
gst_caps_append (audiosrccaps, temp);
|
|
}
|
|
audiosrctempl = gst_pad_template_new ("audio_%02d",
|
|
GST_PAD_SRC, GST_PAD_SOMETIMES, audiosrccaps);
|
|
|
|
subtitlesrccaps = gst_caps_new_empty ();
|
|
/* subtitle src template */
|
|
for (i = 0; subtitle_id[i] != NULL; i++) {
|
|
temp = gst_matroska_demux_subtitle_caps (NULL, subtitle_id[i], NULL, 0);
|
|
gst_caps_append (subtitlesrccaps, temp);
|
|
}
|
|
subtitlesrctempl = gst_pad_template_new ("subtitle_%02d",
|
|
GST_PAD_SRC, GST_PAD_SOMETIMES, subtitlesrccaps);
|
|
|
|
/* 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;
|
|
}
|