/* GStreamer Matroska muxer/demuxer * (c) 2003 Ronald Bultje * (c) 2006 Tim-Philipp Müller * (c) 2008 Sebastian Dröge * * matroska-demux.c: matroska file/stream demuxer * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* TODO: check CRC32 if present * TODO: there can be a segment after the first segment. Handle like * chained oggs. Fixes #334082 * TODO: Test samples: http://www.matroska.org/samples/matrix/index.html * http://samples.mplayerhq.hu/Matroska/ * TODO: check if demuxing is done correct for all codecs according to spec * TODO: seeking with incomplete or without CUE */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include /* For AVI compatibility mode and for fourcc stuff */ #include #include #include #include #include #ifdef HAVE_ZLIB #include #endif #ifdef HAVE_BZ2 #include #endif #include "lzo.h" #include "matroska-demux.h" #include "matroska-ids.h" GST_DEBUG_CATEGORY_STATIC (matroskademux_debug); #define GST_CAT_DEFAULT matroskademux_debug #define DEBUG_ELEMENT_START(demux, ebml, element) \ GST_DEBUG_OBJECT (demux, "Parsing " element " element at offset %" \ G_GUINT64_FORMAT, ebml->offset) #define DEBUG_ELEMENT_STOP(demux, ebml, element, ret) \ GST_DEBUG_OBJECT (demux, "Parsing " element " element at offset %" \ G_GUINT64_FORMAT " finished with '%s'", ebml->offset, \ gst_flow_get_name (ret)) enum { ARG_0, ARG_METADATA, ARG_STREAMINFO }; static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS ("video/x-matroska") ); /* TODO: fill in caps! */ static GstStaticPadTemplate audio_src_templ = GST_STATIC_PAD_TEMPLATE ("audio_%02d", GST_PAD_SRC, GST_PAD_SOMETIMES, GST_STATIC_CAPS ("ANY") ); static GstStaticPadTemplate video_src_templ = GST_STATIC_PAD_TEMPLATE ("video_%02d", GST_PAD_SRC, GST_PAD_SOMETIMES, GST_STATIC_CAPS ("ANY") ); static GstStaticPadTemplate subtitle_src_templ = GST_STATIC_PAD_TEMPLATE ("subtitle_%02d", GST_PAD_SRC, GST_PAD_SOMETIMES, GST_STATIC_CAPS ("text/plain; application/x-ssa; application/x-ass; " "application/x-usf; video/x-dvd-subpicture; " "application/x-subtitle-unknown") ); static GstFlowReturn gst_matroska_demux_parse_contents (GstMatroskaDemux * demux); /* element functions */ static void gst_matroska_demux_loop (GstPad * pad); static gboolean gst_matroska_demux_element_send_event (GstElement * element, GstEvent * event); static gboolean gst_matroska_demux_element_query (GstElement * element, GstQuery * query); /* pad functions */ static gboolean gst_matroska_demux_sink_activate_pull (GstPad * sinkpad, gboolean active); static gboolean gst_matroska_demux_sink_activate (GstPad * sinkpad); static gboolean gst_matroska_demux_handle_seek_event (GstMatroskaDemux * demux, GstPad * pad, GstEvent * event); static gboolean gst_matroska_demux_handle_src_event (GstPad * pad, GstEvent * event); static const GstQueryType *gst_matroska_demux_get_src_query_types (GstPad * pad); static gboolean gst_matroska_demux_handle_src_query (GstPad * pad, GstQuery * query); static GstStateChangeReturn gst_matroska_demux_change_state (GstElement * element, GstStateChange transition); /* caps functions */ static GstCaps *gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext * videocontext, const gchar * codec_id, gpointer data, guint size, gchar ** codec_name); static GstCaps *gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext * audiocontext, const gchar * codec_id, gpointer data, guint size, gchar ** codec_name); static GstCaps * gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext * subtitlecontext, const gchar * codec_id, gpointer data, guint size); /* stream methods */ static void gst_matroska_demux_reset (GstElement * element); GST_BOILERPLATE (GstMatroskaDemux, gst_matroska_demux, GstEbmlRead, GST_TYPE_EBML_READ); static void gst_matroska_demux_base_init (gpointer klass) { GstElementClass *element_class = GST_ELEMENT_CLASS (klass); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&video_src_templ)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&audio_src_templ)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&subtitle_src_templ)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sink_templ)); gst_element_class_set_details_simple (element_class, "Matroska demuxer", "Codec/Demuxer", "Demuxes a Matroska Stream into video/audio/subtitles", "Ronald Bultje "); } static void gst_matroska_demux_finalize (GObject * object) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (object); if (demux->src) { g_ptr_array_free (demux->src, TRUE); demux->src = NULL; } G_OBJECT_CLASS (parent_class)->finalize (object); } static void gst_matroska_demux_class_init (GstMatroskaDemuxClass * klass) { GObjectClass *gobject_class = (GObjectClass *) klass; GstElementClass *gstelement_class = (GstElementClass *) klass; GST_DEBUG_CATEGORY_INIT (matroskademux_debug, "matroskademux", 0, "Matroska demuxer"); gobject_class->finalize = gst_matroska_demux_finalize; gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_matroska_demux_change_state); gstelement_class->send_event = GST_DEBUG_FUNCPTR (gst_matroska_demux_element_send_event); gstelement_class->query = GST_DEBUG_FUNCPTR (gst_matroska_demux_element_query); } static void gst_matroska_demux_init (GstMatroskaDemux * demux, GstMatroskaDemuxClass * klass) { demux->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink"); gst_pad_set_activate_function (demux->sinkpad, GST_DEBUG_FUNCPTR (gst_matroska_demux_sink_activate)); gst_pad_set_activatepull_function (demux->sinkpad, GST_DEBUG_FUNCPTR (gst_matroska_demux_sink_activate_pull)); gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad); GST_EBML_READ (demux)->sinkpad = demux->sinkpad; /* initial stream no. */ demux->src = NULL; demux->writing_app = NULL; demux->muxing_app = NULL; demux->index = NULL; /* finish off */ gst_matroska_demux_reset (GST_ELEMENT (demux)); } static void gst_matroska_track_free (GstMatroskaTrackContext * track) { g_free (track->codec_id); g_free (track->codec_name); g_free (track->name); g_free (track->language); g_free (track->codec_priv); g_free (track->codec_state); if (track->encodings != NULL) { int i; for (i = 0; i < track->encodings->len; ++i) { GstMatroskaTrackEncoding *enc = &g_array_index (track->encodings, GstMatroskaTrackEncoding, i); g_free (enc->comp_settings); } g_array_free (track->encodings, TRUE); } if (track->pending_tags) gst_tag_list_free (track->pending_tags); g_free (track); } /* * Returns the aggregated GstFlowReturn. */ static GstFlowReturn gst_matroska_demux_combine_flows (GstMatroskaDemux * demux, GstMatroskaTrackContext * track, GstFlowReturn ret) { guint i; /* store the value */ track->last_flow = ret; /* any other error that is not-linked can be returned right away */ if (ret != GST_FLOW_NOT_LINKED) goto done; /* only return NOT_LINKED if all other pads returned NOT_LINKED */ g_assert (demux->src->len == demux->num_streams); for (i = 0; i < demux->src->len; i++) { GstMatroskaTrackContext *ostream = g_ptr_array_index (demux->src, i); if (ostream == NULL) continue; ret = ostream->last_flow; /* some other return value (must be SUCCESS but we can return * other values as well) */ if (ret != GST_FLOW_NOT_LINKED) goto done; } /* if we get here, all other pads were unlinked and we return * NOT_LINKED then */ done: GST_LOG_OBJECT (demux, "combined return %s", gst_flow_get_name (ret)); return ret; } static void gst_matroska_demux_reset (GstElement * element) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element); guint i; GST_DEBUG_OBJECT (demux, "Resetting state"); /* reset input */ demux->state = GST_MATROSKA_DEMUX_STATE_START; /* clean up existing streams */ if (demux->src) { g_assert (demux->src->len == demux->num_streams); for (i = 0; i < demux->src->len; i++) { GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i); if (context->pad != NULL) gst_element_remove_pad (GST_ELEMENT (demux), context->pad); gst_caps_replace (&context->caps, NULL); gst_matroska_track_free (context); } g_ptr_array_free (demux->src, TRUE); } demux->src = g_ptr_array_new (); demux->num_streams = 0; demux->num_a_streams = 0; demux->num_t_streams = 0; demux->num_v_streams = 0; /* reset media info */ g_free (demux->writing_app); demux->writing_app = NULL; g_free (demux->muxing_app); demux->muxing_app = NULL; /* reset indexes */ if (demux->index) { g_array_free (demux->index, TRUE); demux->index = NULL; } /* reset timers */ demux->clock = NULL; demux->time_scale = 1000000; demux->created = G_MININT64; demux->index_parsed = FALSE; demux->tracks_parsed = FALSE; demux->segmentinfo_parsed = FALSE; demux->attachments_parsed = FALSE; g_list_foreach (demux->tags_parsed, (GFunc) gst_ebml_level_free, NULL); g_list_free (demux->tags_parsed); demux->tags_parsed = NULL; gst_segment_init (&demux->segment, GST_FORMAT_TIME); demux->duration = -1; if (demux->close_segment) { gst_event_unref (demux->close_segment); demux->close_segment = NULL; } if (demux->new_segment) { gst_event_unref (demux->new_segment); demux->new_segment = NULL; } } static gint gst_matroska_demux_stream_from_num (GstMatroskaDemux * demux, guint track_num) { guint n; g_assert (demux->src->len == demux->num_streams); for (n = 0; n < demux->src->len; n++) { GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, n); if (context->num == track_num) { return n; } } if (n == demux->num_streams) GST_WARNING_OBJECT (demux, "Failed to find corresponding pad for tracknum %d", track_num); return -1; } static gint gst_matroska_demux_encoding_cmp (GstMatroskaTrackEncoding * a, GstMatroskaTrackEncoding * b) { if (b->order > a->order) return 1; else if (b->order < a->order) return -1; else return 0; } static gboolean gst_matroska_demux_encoding_order_unique (GArray * encodings, guint64 order) { gint i; if (encodings == NULL || encodings->len == 0) return TRUE; for (i = 0; i < encodings->len; i++) if (g_array_index (encodings, GstMatroskaTrackEncoding, i).order == order) return FALSE; return TRUE; } static GstFlowReturn gst_matroska_demux_read_track_encoding (GstMatroskaDemux * demux, GstMatroskaTrackContext * context) { GstMatroskaTrackEncoding enc = { 0, }; GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret; guint32 id; DEBUG_ELEMENT_START (demux, ebml, "ContentEncoding"); /* Set default values */ enc.scope = 1; /* All other default values are 0 */ if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncoding", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_CONTENTENCODINGORDER:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (!gst_matroska_demux_encoding_order_unique (context->encodings, num)) { GST_ERROR_OBJECT (demux, "ContentEncodingOrder %" G_GUINT64_FORMAT "is not unique for track %d", num, context->num); ret = GST_FLOW_ERROR; break; } GST_DEBUG_OBJECT (demux, "ContentEncodingOrder: %" G_GUINT64_FORMAT, num); enc.order = num; break; } case GST_MATROSKA_ID_CONTENTENCODINGSCOPE:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num > 7 && num == 0) { GST_ERROR_OBJECT (demux, "Invalid ContentEncodingScope %" G_GUINT64_FORMAT, num); ret = GST_FLOW_ERROR; break; } GST_DEBUG_OBJECT (demux, "ContentEncodingScope: %" G_GUINT64_FORMAT, num); enc.scope = num; break; } case GST_MATROSKA_ID_CONTENTENCODINGTYPE:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num > 1) { GST_ERROR_OBJECT (demux, "Invalid ContentEncodingType %" G_GUINT64_FORMAT, num); ret = GST_FLOW_ERROR; break; } else if (num != 0) { GST_ERROR_OBJECT (demux, "Encrypted tracks are not supported yet"); ret = GST_FLOW_ERROR; break; } GST_DEBUG_OBJECT (demux, "ContentEncodingType: %" G_GUINT64_FORMAT, num); enc.type = num; break; } case GST_MATROSKA_ID_CONTENTCOMPRESSION:{ DEBUG_ELEMENT_START (demux, ebml, "ContentCompression"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) break; while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_CONTENTCOMPALGO:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) { break; } if (num > 3) { GST_ERROR_OBJECT (demux, "Invalid ContentCompAlgo %" G_GUINT64_FORMAT, num); ret = GST_FLOW_ERROR; break; } GST_DEBUG_OBJECT (demux, "ContentCompAlgo: %" G_GUINT64_FORMAT, num); enc.comp_algo = num; break; } case GST_MATROSKA_ID_CONTENTCOMPSETTINGS:{ guint8 *data; guint64 size; if ((ret = gst_ebml_read_binary (ebml, &id, &data, &size)) != GST_FLOW_OK) { break; } enc.comp_settings = data; enc.comp_settings_length = size; GST_DEBUG_OBJECT (demux, "ContentCompSettings of size %" G_GUINT64_FORMAT, size); break; } default: GST_WARNING_OBJECT (demux, "Unknown ContentCompression subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } break; DEBUG_ELEMENT_STOP (demux, ebml, "ContentCompression", ret); } case GST_MATROSKA_ID_CONTENTENCRYPTION: GST_ERROR_OBJECT (demux, "Encrypted tracks not yet supported"); gst_ebml_read_skip (ebml); ret = GST_FLOW_ERROR; break; default: GST_WARNING_OBJECT (demux, "Unknown ContentEncoding subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncoding", ret); if (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED) return ret; /* TODO: Check if the combination of values is valid */ g_array_append_val (context->encodings, enc); return ret; } static gboolean gst_matroska_decompress_data (GstMatroskaTrackEncoding * enc, guint8 ** data_out, guint * size_out, GstMatroskaTrackCompressionAlgorithm algo) { guint8 *new_data = NULL; guint new_size = 0; guint8 *data = *data_out; guint size = *size_out; gboolean ret = TRUE; if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_ZLIB) { #ifdef HAVE_ZLIB /* zlib encoded data */ z_stream zstream; guint orig_size; int result; orig_size = size; zstream.zalloc = (alloc_func) 0; zstream.zfree = (free_func) 0; zstream.opaque = (voidpf) 0; if (inflateInit (&zstream) != Z_OK) { GST_WARNING ("zlib initialization failed."); ret = FALSE; goto out; } zstream.next_in = (Bytef *) data; zstream.avail_in = orig_size; new_size = orig_size; new_data = g_malloc (new_size); zstream.avail_out = new_size; zstream.next_out = (Bytef *) new_data; do { result = inflate (&zstream, Z_NO_FLUSH); if (result != Z_OK && result != Z_STREAM_END) { GST_WARNING ("zlib decompression failed."); g_free (new_data); inflateEnd (&zstream); break; } new_size += 4000; new_data = g_realloc (new_data, new_size); zstream.next_out = (Bytef *) (new_data + zstream.total_out); zstream.avail_out += 4000; } while (zstream.avail_in != 0 && result != Z_STREAM_END); if (result != Z_STREAM_END) { ret = FALSE; goto out; } else { new_size = zstream.total_out; inflateEnd (&zstream); } #else GST_WARNING ("zlib encoded tracks not supported."); ret = FALSE; goto out; #endif } else if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_BZLIB) { #ifdef HAVE_BZ2 /* bzip2 encoded data */ bz_stream bzstream; guint orig_size; int result; bzstream.bzalloc = NULL; bzstream.bzfree = NULL; bzstream.opaque = NULL; orig_size = size; if ((result = BZ2_bzDecompressInit (&bzstream, 0, 0)) != BZ_OK) { GST_WARNING ("bzip2 initialization failed."); ret = FALSE; goto out; } bzstream.next_in = (char *) data; bzstream.avail_in = orig_size; new_size = orig_size; new_data = g_malloc (new_size); bzstream.avail_out = new_size; bzstream.next_out = (char *) new_data; do { result = BZ2_bzDecompress (&bzstream); if (result != BZ_OK && result != BZ_STREAM_END) { GST_WARNING ("bzip2 decompression failed."); g_free (new_data); BZ2_bzDecompressEnd (&bzstream); break; } new_size += 4000; new_data = g_realloc (new_data, new_size); bzstream.next_out = (char *) (new_data + bzstream.total_out_lo32); bzstream.avail_out += 4000; } while (bzstream.avail_in != 0 && result != BZ_STREAM_END); if (result != BZ_STREAM_END) { ret = FALSE; goto out; } else { new_size = bzstream.total_out_lo32; BZ2_bzDecompressEnd (&bzstream); } #else GST_WARNING ("bzip2 encoded tracks not supported."); ret = FALSE; goto out; #endif } else if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_LZO1X) { /* lzo encoded data */ int result; int orig_size, out_size; orig_size = size; out_size = size; new_size = size; new_data = g_malloc (new_size); do { orig_size = size; out_size = new_size; result = lzo1x_decode (new_data, &out_size, data, &orig_size); if (orig_size > 0) { new_size += 4000; new_data = g_realloc (new_data, new_size); } } while (orig_size > 0 && result == LZO_OUTPUT_FULL); new_size -= out_size; if (result != LZO_OUTPUT_FULL) { GST_WARNING ("lzo decompression failed"); g_free (new_data); ret = FALSE; goto out; } } else if (algo == GST_MATROSKA_TRACK_COMPRESSION_ALGORITHM_HEADERSTRIP) { /* header stripped encoded data */ if (enc->comp_settings_length > 0) { new_data = g_malloc (size + enc->comp_settings_length); new_size = size + enc->comp_settings_length; memcpy (new_data, enc->comp_settings, enc->comp_settings_length); memcpy (new_data + enc->comp_settings_length, data, size); } } else { g_assert_not_reached (); } out: if (!ret) { *data_out = NULL; *size_out = 0; } else { *data_out = new_data; *size_out = new_size; } return ret; } static gboolean gst_matroska_decode_data (GArray * encodings, guint8 ** data_out, guint * size_out, GstMatroskaTrackEncodingScope scope, gboolean free) { guint8 *data; guint size; gboolean ret = TRUE; gint i; g_return_val_if_fail (encodings != NULL, FALSE); g_return_val_if_fail (data_out != NULL && *data_out != NULL, FALSE); g_return_val_if_fail (size_out != NULL, FALSE); data = *data_out; size = *size_out; for (i = 0; i < encodings->len; i++) { GstMatroskaTrackEncoding *enc = &g_array_index (encodings, GstMatroskaTrackEncoding, i); guint8 *new_data = NULL; guint new_size = 0; if ((enc->scope & scope) == 0) continue; /* Encryption not supported yet */ if (enc->type != 0) { ret = FALSE; break; } new_data = data; new_size = size; ret = gst_matroska_decompress_data (enc, &new_data, &new_size, enc->comp_algo); if (!ret) break; if ((data == *data_out && free) || (data != *data_out)) g_free (data); data = new_data; size = new_size; } if (!ret) { if ((data == *data_out && free) || (data != *data_out)) g_free (data); *data_out = NULL; *size_out = 0; } else { *data_out = data; *size_out = size; } return ret; } static GstBuffer * gst_matroska_decode_buffer (GstMatroskaTrackContext * context, GstBuffer * buf) { guint8 *data; guint size; GstBuffer *new_buf; g_return_val_if_fail (GST_IS_BUFFER (buf), NULL); data = GST_BUFFER_DATA (buf); size = GST_BUFFER_SIZE (buf); g_return_val_if_fail (data != NULL && size > 0, buf); if (gst_matroska_decode_data (context->encodings, &data, &size, GST_MATROSKA_TRACK_ENCODING_SCOPE_FRAME, FALSE)) { new_buf = gst_buffer_new (); GST_BUFFER_MALLOCDATA (new_buf) = (guint8 *) data; GST_BUFFER_DATA (new_buf) = (guint8 *) data; GST_BUFFER_SIZE (new_buf) = size; gst_buffer_unref (buf); buf = new_buf; return buf; } else { gst_buffer_unref (buf); return NULL; } } static GstFlowReturn gst_matroska_decode_content_encodings (GArray * encodings) { gint i; if (encodings == NULL) return GST_FLOW_OK; for (i = 0; i < encodings->len; i++) { GstMatroskaTrackEncoding *enc = &g_array_index (encodings, GstMatroskaTrackEncoding, i); GstMatroskaTrackEncoding *enc2; guint8 *data = NULL; guint size; if ((enc->scope & GST_MATROSKA_TRACK_ENCODING_SCOPE_NEXT_CONTENT_ENCODING) == 0) continue; /* Encryption not supported yet */ if (enc->type != 0) return GST_FLOW_ERROR; if (i + 1 >= encodings->len) return GST_FLOW_ERROR; enc2 = &g_array_index (encodings, GstMatroskaTrackEncoding, i + 1); if (enc->comp_settings_length == 0) continue; data = enc->comp_settings; size = enc->comp_settings_length; if (!gst_matroska_decompress_data (enc, &data, &size, enc->comp_algo)) return GST_FLOW_ERROR; g_free (enc->comp_settings); enc->comp_settings = data; enc->comp_settings_length = size; } return GST_FLOW_OK; } static GstFlowReturn gst_matroska_demux_read_track_encodings (GstMatroskaDemux * demux, GstMatroskaTrackContext * context) { GstFlowReturn ret; GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; DEBUG_ELEMENT_START (demux, ebml, "ContentEncodings"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncodings", ret); return ret; } context->encodings = g_array_sized_new (FALSE, FALSE, sizeof (GstMatroskaTrackEncoding), 1); while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_CONTENTENCODING: ret = gst_matroska_demux_read_track_encoding (demux, context); break; default: GST_WARNING_OBJECT (demux, "Unknown ContentEncodings subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "ContentEncodings", ret); if (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED) return ret; /* Sort encodings according to their order */ g_array_sort (context->encodings, (GCompareFunc) gst_matroska_demux_encoding_cmp); return gst_matroska_decode_content_encodings (context->encodings); } static gboolean gst_matroska_demux_tracknumber_unique (GstMatroskaDemux * demux, guint64 num) { gint i; g_assert (demux->src->len == demux->num_streams); for (i = 0; i < demux->src->len; i++) { GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i); if (context->num == num) return FALSE; } return TRUE; } static GstFlowReturn gst_matroska_demux_add_stream (GstMatroskaDemux * demux) { GstElementClass *klass = GST_ELEMENT_GET_CLASS (demux); GstEbmlRead *ebml = GST_EBML_READ (demux); GstMatroskaTrackContext *context; GstPadTemplate *templ = NULL; GstCaps *caps = NULL; gchar *padname = NULL; GstFlowReturn ret; guint32 id; GstTagList *list = NULL; gchar *codec = NULL; DEBUG_ELEMENT_START (demux, ebml, "TrackEntry"); /* start with the master */ if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "TrackEntry", ret); return ret; } /* allocate generic... if we know the type, we'll g_renew() * with the precise type */ context = g_new0 (GstMatroskaTrackContext, 1); g_ptr_array_add (demux->src, context); context->index = demux->num_streams; context->type = 0; /* no type yet */ context->default_duration = 0; context->pos = 0; context->set_discont = TRUE; context->timecodescale = 1.0; context->flags = GST_MATROSKA_TRACK_ENABLED | GST_MATROSKA_TRACK_DEFAULT | GST_MATROSKA_TRACK_LACING; context->last_flow = GST_FLOW_OK; demux->num_streams++; g_assert (demux->src->len == demux->num_streams); GST_DEBUG_OBJECT (demux, "Stream number %d", context->index); /* try reading the trackentry headers */ while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* track number (unique stream ID) */ case GST_MATROSKA_ID_TRACKNUMBER:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_ERROR_OBJECT (demux, "Invalid TrackNumber 0"); ret = GST_FLOW_ERROR; break; } else if (!gst_matroska_demux_tracknumber_unique (demux, num)) { GST_ERROR_OBJECT (demux, "TrackNumber %" G_GUINT64_FORMAT " is not unique", num); ret = GST_FLOW_ERROR; break; } GST_DEBUG_OBJECT (demux, "TrackNumber: %" G_GUINT64_FORMAT, num); context->num = num; break; } /* track UID (unique identifier) */ case GST_MATROSKA_ID_TRACKUID:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_ERROR_OBJECT (demux, "Invalid TrackUID 0"); ret = GST_FLOW_ERROR; break; } GST_DEBUG_OBJECT (demux, "TrackUID: %" G_GUINT64_FORMAT, num); context->uid = num; break; } /* track type (video, audio, combined, subtitle, etc.) */ case GST_MATROSKA_ID_TRACKTYPE:{ guint64 track_type; if ((ret = gst_ebml_read_uint (ebml, &id, &track_type)) != GST_FLOW_OK) { break; } if (context->type != 0 && context->type != track_type) { GST_WARNING_OBJECT (demux, "More than one tracktype defined in a TrackEntry - skipping"); break; } else if (track_type < 1 || track_type > 254) { GST_WARNING_OBJECT (demux, "Invalid TrackType %" G_GUINT64_FORMAT, track_type); break; } GST_DEBUG_OBJECT (demux, "TrackType: %" G_GUINT64_FORMAT, track_type); /* ok, so we're actually going to reallocate this thing */ switch (track_type) { case GST_MATROSKA_TRACK_TYPE_VIDEO: gst_matroska_track_init_video_context (&context); break; case GST_MATROSKA_TRACK_TYPE_AUDIO: gst_matroska_track_init_audio_context (&context); break; case GST_MATROSKA_TRACK_TYPE_SUBTITLE: gst_matroska_track_init_subtitle_context (&context); break; case GST_MATROSKA_TRACK_TYPE_COMPLEX: case GST_MATROSKA_TRACK_TYPE_LOGO: case GST_MATROSKA_TRACK_TYPE_BUTTONS: case GST_MATROSKA_TRACK_TYPE_CONTROL: default: GST_WARNING_OBJECT (demux, "Unknown or unsupported TrackType %" G_GUINT64_FORMAT, track_type); context->type = 0; break; } g_ptr_array_index (demux->src, demux->num_streams - 1) = context; break; } /* tracktype specific stuff for video */ case GST_MATROSKA_ID_TRACKVIDEO:{ GstMatroskaTrackVideoContext *videocontext; DEBUG_ELEMENT_START (demux, ebml, "TrackVideo"); if (!gst_matroska_track_init_video_context (&context)) { GST_WARNING_OBJECT (demux, "TrackVideo element in non-video track - ignoring track"); ret = GST_FLOW_ERROR; break; } else if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { break; } videocontext = (GstMatroskaTrackVideoContext *) context; g_ptr_array_index (demux->src, demux->num_streams - 1) = context; while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* Should be one level up but some broken muxers write it here. */ case GST_MATROSKA_ID_TRACKDEFAULTDURATION:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackDefaultDuration 0"); break; } GST_DEBUG_OBJECT (demux, "TrackDefaultDuration: %" G_GUINT64_FORMAT, num); context->default_duration = num; break; } /* video framerate */ /* NOTE: This one is here only for backward compatibility. * Use _TRACKDEFAULDURATION one level up. */ case GST_MATROSKA_ID_VIDEOFRAMERATE:{ gdouble num; if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK) break; if (num <= 0.0) { GST_WARNING_OBJECT (demux, "Invalid TrackVideoFPS %lf", num); break; } GST_DEBUG_OBJECT (demux, "TrackVideoFrameRate: %lf", num); if (context->default_duration == 0) context->default_duration = gst_gdouble_to_guint64 ((gdouble) GST_SECOND * (1.0 / num)); videocontext->default_fps = num; break; } /* width of the size to display the video at */ case GST_MATROSKA_ID_VIDEODISPLAYWIDTH:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackVideoDisplayWidth 0"); break; } GST_DEBUG_OBJECT (demux, "TrackVideoDisplayWidth: %" G_GUINT64_FORMAT, num); videocontext->display_width = num; break; } /* height of the size to display the video at */ case GST_MATROSKA_ID_VIDEODISPLAYHEIGHT:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackVideoDisplayHeight 0"); break; } GST_DEBUG_OBJECT (demux, "TrackVideoDisplayHeight: %" G_GUINT64_FORMAT, num); videocontext->display_height = num; break; } /* width of the video in the file */ case GST_MATROSKA_ID_VIDEOPIXELWIDTH:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackVideoPixelWidth 0"); break; } GST_DEBUG_OBJECT (demux, "TrackVideoPixelWidth: %" G_GUINT64_FORMAT, num); videocontext->pixel_width = num; break; } /* height of the video in the file */ case GST_MATROSKA_ID_VIDEOPIXELHEIGHT:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackVideoPixelHeight 0"); break; } GST_DEBUG_OBJECT (demux, "TrackVideoPixelHeight: %" G_GUINT64_FORMAT, num); videocontext->pixel_height = num; break; } /* whether the video is interlaced */ case GST_MATROSKA_ID_VIDEOFLAGINTERLACED:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num) context->flags |= GST_MATROSKA_VIDEOTRACK_INTERLACED; else context->flags &= ~GST_MATROSKA_VIDEOTRACK_INTERLACED; GST_DEBUG_OBJECT (demux, "TrackVideoInterlaced: %d", (context->flags & GST_MATROSKA_VIDEOTRACK_INTERLACED) ? 1 : 0); break; } /* aspect ratio behaviour */ case GST_MATROSKA_ID_VIDEOASPECTRATIOTYPE:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) 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_OBJECT (demux, "Unknown TrackVideoAspectRatioType 0x%x", (guint) num); break; } GST_DEBUG_OBJECT (demux, "TrackVideoAspectRatioType: %" G_GUINT64_FORMAT, num); videocontext->asr_mode = num; break; } /* colourspace (only matters for raw video) fourcc */ case GST_MATROSKA_ID_VIDEOCOLOURSPACE:{ guint8 *data; guint64 datalen; if ((ret = gst_ebml_read_binary (ebml, &id, &data, &datalen)) != GST_FLOW_OK) break; if (datalen != 4) { GST_WARNING_OBJECT (demux, "Invalid TrackVideoColourSpace length %" G_GUINT64_FORMAT, datalen); break; } memcpy (&videocontext->fourcc, data, 4); GST_DEBUG_OBJECT (demux, "TrackVideoColourSpace: %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (videocontext->fourcc)); break; } default: GST_WARNING_OBJECT (demux, "Unknown TrackVideo subelement 0x%x - ignoring", id); /* fall through */ case GST_MATROSKA_ID_VIDEOSTEREOMODE: case GST_MATROSKA_ID_VIDEODISPLAYUNIT: case GST_MATROSKA_ID_VIDEOPIXELCROPBOTTOM: case GST_MATROSKA_ID_VIDEOPIXELCROPTOP: case GST_MATROSKA_ID_VIDEOPIXELCROPLEFT: case GST_MATROSKA_ID_VIDEOPIXELCROPRIGHT: case GST_MATROSKA_ID_VIDEOGAMMAVALUE: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "TrackVideo", ret); break; } /* tracktype specific stuff for audio */ case GST_MATROSKA_ID_TRACKAUDIO:{ GstMatroskaTrackAudioContext *audiocontext; DEBUG_ELEMENT_START (demux, ebml, "TrackAudio"); if (!gst_matroska_track_init_audio_context (&context)) { GST_WARNING_OBJECT (demux, "TrackAudio element in non-audio track - ignoring track"); ret = GST_FLOW_ERROR; break; } if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) break; audiocontext = (GstMatroskaTrackAudioContext *) context; g_ptr_array_index (demux->src, demux->num_streams - 1) = context; while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* samplerate */ case GST_MATROSKA_ID_AUDIOSAMPLINGFREQ:{ gdouble num; if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK) break; if (num <= 0.0) { GST_WARNING_OBJECT (demux, "Invalid TrackAudioSamplingFrequency %lf", num); break; } GST_DEBUG_OBJECT (demux, "TrackAudioSamplingFrequency: %lf", num); audiocontext->samplerate = num; break; } /* bitdepth */ case GST_MATROSKA_ID_AUDIOBITDEPTH:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackAudioBitDepth 0"); break; } GST_DEBUG_OBJECT (demux, "TrackAudioBitDepth: %" G_GUINT64_FORMAT, num); audiocontext->bitdepth = num; break; } /* channels */ case GST_MATROSKA_ID_AUDIOCHANNELS:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackAudioChannels 0"); break; } GST_DEBUG_OBJECT (demux, "TrackAudioChannels: %" G_GUINT64_FORMAT, num); audiocontext->channels = num; break; } default: GST_WARNING_OBJECT (demux, "Unknown TrackAudio subelement 0x%x - ignoring", id); /* fall through */ case GST_MATROSKA_ID_AUDIOCHANNELPOSITIONS: case GST_MATROSKA_ID_AUDIOOUTPUTSAMPLINGFREQ: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "TrackAudio", ret); break; } /* codec identifier */ case GST_MATROSKA_ID_CODECID:{ gchar *text; if ((ret = gst_ebml_read_ascii (ebml, &id, &text)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "CodecID: %s", GST_STR_NULL (text)); context->codec_id = text; break; } /* codec private data */ case GST_MATROSKA_ID_CODECPRIVATE:{ guint8 *data; guint64 size; if ((ret = gst_ebml_read_binary (ebml, &id, &data, &size)) != GST_FLOW_OK) break; context->codec_priv = data; context->codec_priv_size = size; GST_DEBUG_OBJECT (demux, "CodecPrivate of size %" G_GUINT64_FORMAT, size); break; } /* name of the codec */ case GST_MATROSKA_ID_CODECNAME:{ gchar *text; if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "CodecName: %s", GST_STR_NULL (text)); context->codec_name = text; break; } /* name of this track */ case GST_MATROSKA_ID_TRACKNAME:{ gchar *text; if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) break; context->name = text; GST_DEBUG_OBJECT (demux, "TrackName: %s", GST_STR_NULL (text)); break; } /* language (matters for audio/subtitles, mostly) */ case GST_MATROSKA_ID_TRACKLANGUAGE:{ gchar *text; if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) break; context->language = text; /* fre-ca => fre */ if (strlen (context->language) >= 4 && context->language[3] == '-') context->language[3] = '\0'; GST_DEBUG_OBJECT (demux, "TrackLanguage: %s", GST_STR_NULL (context->language)); break; } /* whether this is actually used */ case GST_MATROSKA_ID_TRACKFLAGENABLED:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num) context->flags |= GST_MATROSKA_TRACK_ENABLED; else context->flags &= ~GST_MATROSKA_TRACK_ENABLED; GST_DEBUG_OBJECT (demux, "TrackEnabled: %d", (context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0); break; } /* whether it's the default for this track type */ case GST_MATROSKA_ID_TRACKFLAGDEFAULT:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num) context->flags |= GST_MATROSKA_TRACK_DEFAULT; else context->flags &= ~GST_MATROSKA_TRACK_DEFAULT; GST_DEBUG_OBJECT (demux, "TrackDefault: %d", (context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0); break; } /* whether the track must be used during playback */ case GST_MATROSKA_ID_TRACKFLAGFORCED:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num) context->flags |= GST_MATROSKA_TRACK_FORCED; else context->flags &= ~GST_MATROSKA_TRACK_FORCED; GST_DEBUG_OBJECT (demux, "TrackForced: %d", (context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0); break; } /* lacing (like MPEG, where blocks don't end/start on frame * boundaries) */ case GST_MATROSKA_ID_TRACKFLAGLACING:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num) context->flags |= GST_MATROSKA_TRACK_LACING; else context->flags &= ~GST_MATROSKA_TRACK_LACING; GST_DEBUG_OBJECT (demux, "TrackLacing: %d", (context->flags & GST_MATROSKA_TRACK_ENABLED) ? 1 : 0); break; } /* default length (in time) of one data block in this track */ case GST_MATROSKA_ID_TRACKDEFAULTDURATION:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid TrackDefaultDuration 0"); break; } GST_DEBUG_OBJECT (demux, "TrackDefaultDuration: %" G_GUINT64_FORMAT, num); context->default_duration = num; break; } case GST_MATROSKA_ID_CONTENTENCODINGS:{ ret = gst_matroska_demux_read_track_encodings (demux, context); break; } case GST_MATROSKA_ID_TRACKTIMECODESCALE:{ gdouble num; if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK) break; if (num <= 0.0) { GST_WARNING_OBJECT (demux, "Invalid TrackTimeCodeScale %lf", num); break; } GST_DEBUG_OBJECT (demux, "TrackTimeCodeScale: %lf", num); context->timecodescale = num; break; } default: GST_WARNING ("Unknown TrackEntry subelement 0x%x - ignoring", id); /* pass-through */ /* we ignore these because they're nothing useful (i.e. crap) * or simply not implemented yet. */ case GST_MATROSKA_ID_TRACKMINCACHE: case GST_MATROSKA_ID_TRACKMAXCACHE: case GST_MATROSKA_ID_MAXBLOCKADDITIONID: case GST_MATROSKA_ID_TRACKATTACHMENTLINK: case GST_MATROSKA_ID_TRACKOVERLAY: case GST_MATROSKA_ID_TRACKTRANSLATE: case GST_MATROSKA_ID_TRACKOFFSET: case GST_MATROSKA_ID_CODECSETTINGS: case GST_MATROSKA_ID_CODECINFOURL: case GST_MATROSKA_ID_CODECDOWNLOADURL: case GST_MATROSKA_ID_CODECDECODEALL: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "TrackEntry", ret); /* Decode codec private data if necessary */ if (context->encodings && context->encodings->len > 0 && context->codec_priv && context->codec_priv_size > 0) { if (!gst_matroska_decode_data (context->encodings, (guint8 **) & context->codec_priv, &context->codec_priv_size, GST_MATROSKA_TRACK_ENCODING_SCOPE_CODEC_DATA, TRUE)) { GST_WARNING_OBJECT (demux, "Decoding codec private data failed"); ret = GST_FLOW_ERROR; } } if (context->type == 0 || context->codec_id == NULL || (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED)) { if (ret == GST_FLOW_OK || ret == GST_FLOW_UNEXPECTED) GST_WARNING_OBJECT (ebml, "Unknown stream/codec in track entry header"); demux->num_streams--; g_ptr_array_remove_index (demux->src, demux->num_streams); g_assert (demux->src->len == demux->num_streams); if (context) { gst_matroska_track_free (context); } return ret; } /* now create the GStreamer connectivity */ switch (context->type) { case GST_MATROSKA_TRACK_TYPE_VIDEO:{ GstMatroskaTrackVideoContext *videocontext = (GstMatroskaTrackVideoContext *) context; padname = g_strdup_printf ("video_%02d", demux->num_v_streams++); templ = gst_element_class_get_pad_template (klass, "video_%02d"); caps = gst_matroska_demux_video_caps (videocontext, context->codec_id, context->codec_priv, context->codec_priv_size, &codec); if (codec) { list = gst_tag_list_new (); gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, GST_TAG_VIDEO_CODEC, codec, NULL); g_free (codec); } break; } case GST_MATROSKA_TRACK_TYPE_AUDIO:{ GstMatroskaTrackAudioContext *audiocontext = (GstMatroskaTrackAudioContext *) context; padname = g_strdup_printf ("audio_%02d", demux->num_a_streams++); templ = gst_element_class_get_pad_template (klass, "audio_%02d"); caps = gst_matroska_demux_audio_caps (audiocontext, context->codec_id, context->codec_priv, context->codec_priv_size, &codec); if (codec) { list = gst_tag_list_new (); gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, GST_TAG_AUDIO_CODEC, codec, NULL); g_free (codec); } break; } case GST_MATROSKA_TRACK_TYPE_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_COMPLEX: case GST_MATROSKA_TRACK_TYPE_LOGO: case GST_MATROSKA_TRACK_TYPE_BUTTONS: case GST_MATROSKA_TRACK_TYPE_CONTROL: default: /* we should already have quit by now */ g_assert_not_reached (); } if ((context->language == NULL || *context->language == '\0') && (context->type == GST_MATROSKA_TRACK_TYPE_AUDIO || context->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE)) { GST_LOG ("stream %d: language=eng (assuming default)", context->index); context->language = g_strdup ("eng"); } if (context->language) { if (!list) list = gst_tag_list_new (); gst_tag_list_add (list, GST_TAG_MERGE_REPLACE, GST_TAG_LANGUAGE_CODE, context->language, NULL); } if (caps == NULL) { GST_WARNING_OBJECT (demux, "could not determine caps for stream with " "codec_id='%s'", context->codec_id); switch (context->type) { case GST_MATROSKA_TRACK_TYPE_VIDEO: caps = gst_caps_new_simple ("video/x-unknown", NULL); break; case GST_MATROSKA_TRACK_TYPE_AUDIO: caps = gst_caps_new_simple ("audio/x-unknown", NULL); break; case GST_MATROSKA_TRACK_TYPE_SUBTITLE: caps = gst_caps_new_simple ("application/x-subtitle-unknown", NULL); break; case GST_MATROSKA_TRACK_TYPE_COMPLEX: default: caps = gst_caps_new_simple ("application/x-matroska-unknown", NULL); break; } gst_caps_set_simple (caps, "codec-id", G_TYPE_STRING, context->codec_id, NULL); } /* the pad in here */ context->pad = gst_pad_new_from_template (templ, padname); context->caps = caps; gst_pad_set_event_function (context->pad, GST_DEBUG_FUNCPTR (gst_matroska_demux_handle_src_event)); gst_pad_set_query_type_function (context->pad, GST_DEBUG_FUNCPTR (gst_matroska_demux_get_src_query_types)); gst_pad_set_query_function (context->pad, GST_DEBUG_FUNCPTR (gst_matroska_demux_handle_src_query)); GST_INFO_OBJECT (demux, "Adding pad '%s' with caps %" GST_PTR_FORMAT, padname, caps); context->pending_tags = list; gst_pad_set_element_private (context->pad, context); gst_pad_use_fixed_caps (context->pad); gst_pad_set_caps (context->pad, context->caps); gst_pad_set_active (context->pad, TRUE); gst_element_add_pad (GST_ELEMENT (demux), context->pad); g_free (padname); /* tadaah! */ return ret; } static const GstQueryType * gst_matroska_demux_get_src_query_types (GstPad * pad) { static const GstQueryType query_types[] = { GST_QUERY_POSITION, GST_QUERY_DURATION, 0 }; return query_types; } static gboolean gst_matroska_demux_query (GstMatroskaDemux * demux, GstPad * pad, GstQuery * query) { gboolean res = FALSE; GstMatroskaTrackContext *context = NULL; if (pad) { context = gst_pad_get_element_private (pad); } switch (GST_QUERY_TYPE (query)) { case GST_QUERY_POSITION: { GstFormat format; gst_query_parse_position (query, &format, NULL); if (format == GST_FORMAT_TIME) { GST_OBJECT_LOCK (demux); if (context) gst_query_set_position (query, GST_FORMAT_TIME, context->pos); else gst_query_set_position (query, GST_FORMAT_TIME, demux->segment.last_stop); GST_OBJECT_UNLOCK (demux); } else if (format == GST_FORMAT_DEFAULT && context && context->default_duration) { GST_OBJECT_LOCK (demux); gst_query_set_position (query, GST_FORMAT_DEFAULT, context->pos / context->default_duration); GST_OBJECT_UNLOCK (demux); } else { GST_DEBUG_OBJECT (demux, "only position query in TIME and DEFAULT format is supported"); } res = TRUE; break; } case GST_QUERY_DURATION: { GstFormat format; gst_query_parse_duration (query, &format, NULL); if (format == GST_FORMAT_TIME) { GST_OBJECT_LOCK (demux); gst_query_set_duration (query, GST_FORMAT_TIME, demux->duration); GST_OBJECT_UNLOCK (demux); } else if (format == GST_FORMAT_DEFAULT && context && context->default_duration) { GST_OBJECT_LOCK (demux); gst_query_set_duration (query, GST_FORMAT_DEFAULT, demux->duration / context->default_duration); GST_OBJECT_UNLOCK (demux); } else { GST_DEBUG_OBJECT (demux, "only duration query in TIME and DEFAULT format is supported"); } res = TRUE; break; } default: res = gst_pad_query_default (pad, query); break; } return res; } static gboolean gst_matroska_demux_element_query (GstElement * element, GstQuery * query) { return gst_matroska_demux_query (GST_MATROSKA_DEMUX (element), NULL, query); } static gboolean gst_matroska_demux_handle_src_query (GstPad * pad, GstQuery * query) { gboolean ret; GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad)); ret = gst_matroska_demux_query (demux, pad, query); gst_object_unref (demux); return ret; } static GstMatroskaIndex * gst_matroskademux_do_index_seek (GstMatroskaDemux * demux, guint track, gint64 seek_pos, gint64 segment_stop, gboolean keyunit) { GstMatroskaIndex *entry = NULL; guint n; if (!demux->index || !demux->index->len) return NULL; /* find entry just before or at the requested position */ for (n = 0; n < demux->index->len; n++) { GstMatroskaIndex *index; index = &g_array_index (demux->index, GstMatroskaIndex, n); if (index->time <= seek_pos && ((track && index->track == track) || !track)) entry = index; else break; } if (keyunit) { /* find index entry closest to the requested position. * n contains the index of the GstMatroskaIndex after * entry */ if (entry && n < demux->index->len) { GstMatroskaIndex *index; GstClockTimeDiff d_this, d_entry; do { index = &g_array_index (demux->index, GstMatroskaIndex, n); } while (n++ < demux->index->len && ((track && index->track == track) || !track)); d_entry = GST_CLOCK_DIFF (entry->time, seek_pos); if (d_entry < 0) d_entry = -d_entry; d_this = GST_CLOCK_DIFF (index->time, seek_pos); if (d_this < 0) d_this = -d_this; if (d_this < d_entry && (index->time < segment_stop || segment_stop == -1)) { entry = index; } } } if (entry == NULL && track) entry = gst_matroskademux_do_index_seek (demux, 0, seek_pos, segment_stop, keyunit); return entry; } /* takes ownership of the passed event! */ static gboolean gst_matroska_demux_send_event (GstMatroskaDemux * demux, GstEvent * event) { gboolean ret = TRUE; gint i; g_return_val_if_fail (event != NULL, FALSE); GST_DEBUG_OBJECT (demux, "Sending event of type %s to all source pads", GST_EVENT_TYPE_NAME (event)); g_assert (demux->src->len == demux->num_streams); for (i = 0; i < demux->src->len; i++) { GstMatroskaTrackContext *stream; stream = g_ptr_array_index (demux->src, i); gst_event_ref (event); gst_pad_push_event (stream->pad, event); if (stream->pending_tags) { GST_DEBUG_OBJECT (demux, "Sending pending_tags %p for pad %s:%s", stream->pending_tags, GST_DEBUG_PAD_NAME (stream->pad)); gst_element_found_tags_for_pad (GST_ELEMENT (demux), stream->pad, stream->pending_tags); stream->pending_tags = NULL; } } gst_event_unref (event); return ret; } static gboolean gst_matroska_demux_element_send_event (GstElement * element, GstEvent * event) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element); gboolean res; g_return_val_if_fail (event != NULL, FALSE); if (GST_EVENT_TYPE (event) == GST_EVENT_SEEK) { res = gst_matroska_demux_handle_seek_event (demux, NULL, event); } else { GST_WARNING_OBJECT (demux, "Unhandled event of type %s", GST_EVENT_TYPE_NAME (event)); res = FALSE; } gst_event_unref (event); return res; } static gboolean gst_matroska_demux_handle_seek_event (GstMatroskaDemux * demux, GstPad * pad, GstEvent * event) { GstMatroskaIndex *entry; GstSeekFlags flags; GstSeekType cur_type, stop_type; GstFormat format; gboolean flush, keyunit; gdouble rate; gint64 cur, stop; gint64 segment_start, segment_stop; gint i; guint track = 0; if (pad) { GstMatroskaTrackContext *context = gst_pad_get_element_private (pad); track = context->num; } gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur, &stop_type, &stop); /* we can only seek on time */ if (format != GST_FORMAT_TIME) { GST_DEBUG_OBJECT (demux, "Can only seek on TIME"); return FALSE; } /* cannot yet do backwards playback */ if (rate <= 0.0) { GST_DEBUG_OBJECT (demux, "Can only seek with positive rate"); return FALSE; } /* check sanity before we start flushing and all that */ if (cur_type == GST_SEEK_TYPE_SET) { GST_OBJECT_LOCK (demux); if (!gst_matroskademux_do_index_seek (demux, 0, cur, -1, FALSE)) { GST_DEBUG_OBJECT (demux, "No matching seek entry in index"); GST_OBJECT_UNLOCK (demux); return FALSE; } GST_DEBUG_OBJECT (demux, "Seek position looks sane"); GST_OBJECT_UNLOCK (demux); } flush = !!(flags & GST_SEEK_FLAG_FLUSH); keyunit = !!(flags & GST_SEEK_FLAG_KEY_UNIT); if (flush) { GST_DEBUG_OBJECT (demux, "Starting flush"); gst_pad_push_event (demux->sinkpad, gst_event_new_flush_start ()); gst_matroska_demux_send_event (demux, gst_event_new_flush_start ()); } else { gst_pad_pause_task (demux->sinkpad); } /* now grab the stream lock so that streaming cannot continue, for * non flushing seeks when the element is in PAUSED this could block * forever. */ GST_PAD_STREAM_LOCK (demux->sinkpad); GST_OBJECT_LOCK (demux); /* if nothing configured, play complete file */ if (!GST_CLOCK_TIME_IS_VALID (cur)) cur = 0; /* prevent some calculations and comparisons involving INVALID */ segment_start = demux->segment.start; segment_stop = demux->segment.stop; if (!GST_CLOCK_TIME_IS_VALID (segment_start)) segment_start = 0; if (cur_type == GST_SEEK_TYPE_SET) segment_start = cur; else if (cur_type == GST_SEEK_TYPE_CUR) segment_start += cur; if (stop_type == GST_SEEK_TYPE_SET) { segment_stop = stop; } else if (stop_type == GST_SEEK_TYPE_CUR) { if (GST_CLOCK_TIME_IS_VALID (segment_stop) && GST_CLOCK_TIME_IS_VALID (stop)) segment_stop += stop; else segment_stop = -1; } GST_DEBUG_OBJECT (demux, "New segment positions: %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT, GST_TIME_ARGS (segment_start), GST_TIME_ARGS (segment_stop)); entry = gst_matroskademux_do_index_seek (demux, track, segment_start, segment_stop, keyunit); if (!entry) { GST_DEBUG_OBJECT (demux, "No matching seek entry in index"); goto seek_error; } /* seek (relative to matroska segment) */ if (gst_ebml_read_seek (GST_EBML_READ (demux), entry->pos + demux->ebml_segment_start) != GST_FLOW_OK) { GST_DEBUG_OBJECT (demux, "Failed to seek to offset %" G_GUINT64_FORMAT, entry->pos + demux->ebml_segment_start); goto seek_error; } GST_DEBUG_OBJECT (demux, "Seeked to offset %" G_GUINT64_FORMAT, entry->pos + demux->ebml_segment_start); if (keyunit) { GST_DEBUG_OBJECT (demux, "seek to key unit, adjusting segment start to %" GST_TIME_FORMAT, GST_TIME_ARGS (entry->time)); segment_start = entry->time; } GST_OBJECT_UNLOCK (demux); if (flush) { GST_DEBUG_OBJECT (demux, "Stopping flush"); gst_pad_push_event (demux->sinkpad, gst_event_new_flush_stop ()); gst_matroska_demux_send_event (demux, gst_event_new_flush_stop ()); } else if (demux->segment_running) { GST_DEBUG_OBJECT (demux, "Closing currently running segment"); GST_OBJECT_LOCK (demux); if (demux->close_segment) gst_event_unref (demux->close_segment); demux->close_segment = gst_event_new_new_segment (TRUE, demux->segment.rate, GST_FORMAT_TIME, demux->segment.start, demux->segment.last_stop, demux->segment.last_stop); GST_OBJECT_UNLOCK (demux); } GST_OBJECT_LOCK (demux); GST_DEBUG_OBJECT (demux, "Committing new seek segment"); demux->segment.rate = rate; demux->segment.flags = flags; demux->segment.start = segment_start; demux->segment.stop = segment_stop; GST_OBJECT_UNLOCK (demux); /* notify start of new segment */ if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) { GstMessage *msg; msg = gst_message_new_segment_start (GST_OBJECT (demux), GST_FORMAT_TIME, demux->segment.start); gst_element_post_message (GST_ELEMENT (demux), msg); } GST_OBJECT_LOCK (demux); if (demux->new_segment) gst_event_unref (demux->new_segment); demux->new_segment = gst_event_new_new_segment (FALSE, rate, GST_FORMAT_TIME, segment_start, segment_stop, segment_start); GST_OBJECT_UNLOCK (demux); /* update the time */ g_assert (demux->src->len == demux->num_streams); for (i = 0; i < demux->src->len; i++) { GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i); context->pos = entry->time; context->set_discont = TRUE; context->last_flow = GST_FLOW_OK; } demux->segment.last_stop = entry->time; /* restart our task since it might have been stopped when we did the * flush. */ demux->segment_running = TRUE; gst_pad_start_task (demux->sinkpad, (GstTaskFunction) gst_matroska_demux_loop, demux->sinkpad); /* streaming can continue now */ GST_PAD_STREAM_UNLOCK (demux->sinkpad); return TRUE; seek_error: { /* FIXME: shouldn't we either make it a real error or start the task * function again so that things can continue from where they left off? */ GST_DEBUG_OBJECT (demux, "Got a seek error"); GST_OBJECT_UNLOCK (demux); GST_PAD_STREAM_UNLOCK (demux->sinkpad); return FALSE; } } static gboolean gst_matroska_demux_handle_src_event (GstPad * pad, GstEvent * event) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (gst_pad_get_parent (pad)); gboolean res = TRUE; switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEEK: res = gst_matroska_demux_handle_seek_event (demux, pad, event); break; /* events we don't need to handle */ case GST_EVENT_NAVIGATION: case GST_EVENT_QOS: res = FALSE; break; default: GST_WARNING ("Unhandled %s event, dropped", GST_EVENT_TYPE_NAME (event)); res = FALSE; break; } gst_object_unref (demux); gst_event_unref (event); return res; } static GstFlowReturn gst_matroska_demux_init_stream (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; gchar *doctype; guint version; GstFlowReturn ret; GST_DEBUG_OBJECT (demux, "Init stream"); if ((ret = gst_ebml_read_header (ebml, &doctype, &version)) != GST_FLOW_OK) return ret; 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 GST_FLOW_ERROR; } g_free (doctype); if (version > 2) { GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL), ("Demuxer version (2) is too old to read stream version %d", version)); return GST_FLOW_ERROR; } /* find segment, must be the next element but search as long as * we find it anyway */ while (TRUE) { guint last_level; if ((ret = gst_ebml_peek_id (ebml, &last_level, &id)) != GST_FLOW_OK) { GST_DEBUG_OBJECT (demux, "gst_ebml_peek_id() failed!"); return ret; } if (id == GST_MATROSKA_ID_SEGMENT) break; /* oi! */ GST_WARNING_OBJECT (demux, "Expected a Segment ID (0x%x), but received 0x%x!", GST_MATROSKA_ID_SEGMENT, id); if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) return ret; } /* we now have a EBML segment */ if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { GST_DEBUG_OBJECT (demux, "gst_ebml_read_master() failed!"); return ret; } GST_DEBUG_OBJECT (demux, "Found Segment start at offset %" G_GUINT64_FORMAT, ebml->offset); /* seeks are from the beginning of the segment, * after the segment ID/length */ demux->ebml_segment_start = ebml->offset; return ret; } static GstFlowReturn gst_matroska_demux_parse_tracks (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret = GST_FLOW_OK; guint32 id; DEBUG_ELEMENT_START (demux, ebml, "Tracks"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Tracks", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* one track within the "all-tracks" header */ case GST_MATROSKA_ID_TRACKENTRY: ret = gst_matroska_demux_add_stream (demux); break; default: GST_WARNING ("Unknown Track subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "Tracks", ret); demux->tracks_parsed = TRUE; return ret; } static GstFlowReturn gst_matroska_demux_parse_index_cuetrack (GstMatroskaDemux * demux, guint * nentries) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; GstFlowReturn ret; GstMatroskaIndex idx; idx.pos = (guint64) - 1; idx.track = 0; idx.time = GST_CLOCK_TIME_NONE; idx.block = 1; DEBUG_ELEMENT_START (demux, ebml, "CueTrackPositions"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "CueTrackPositions", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* track number */ case GST_MATROSKA_ID_CUETRACK: { guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { idx.track = 0; GST_WARNING_OBJECT (demux, "Invalid CueTrack 0"); break; } GST_DEBUG_OBJECT (demux, "CueTrack: %" G_GUINT64_FORMAT, num); idx.track = num; break; } /* position in file */ case GST_MATROSKA_ID_CUECLUSTERPOSITION: { guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num > G_MAXINT64) { GST_WARNING_OBJECT (demux, "CueClusterPosition %" G_GUINT64_FORMAT " too large", num); break; } idx.pos = num; break; } /* number of block in the cluster */ case GST_MATROSKA_ID_CUEBLOCKNUMBER: { guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; if (num == 0) { GST_WARNING_OBJECT (demux, "Invalid CueBlockNumber 0"); break; } GST_DEBUG_OBJECT (demux, "CueBlockNumber: %" G_GUINT64_FORMAT, num); idx.block = num; break; } default: GST_WARNING ("Unknown CueTrackPositions subelement 0x%x - ignoring", id); /* fall-through */ case GST_MATROSKA_ID_CUECODECSTATE: case GST_MATROSKA_ID_CUEREFERENCE: if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) break; break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "CueTrackPositions", ret); if ((ret == GST_FLOW_OK || ret == GST_FLOW_UNEXPECTED) && idx.pos != (guint64) - 1 && idx.track > 0) { g_array_append_val (demux->index, idx); (*nentries)++; } else if (ret == GST_FLOW_OK || ret == GST_FLOW_UNEXPECTED) { GST_DEBUG_OBJECT (demux, "CueTrackPositions without valid content"); } return ret; } static GstFlowReturn gst_matroska_demux_parse_index_pointentry (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; GstFlowReturn ret; GstClockTime time = GST_CLOCK_TIME_NONE; guint nentries = 0; DEBUG_ELEMENT_START (demux, ebml, "CuePoint"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "CuePoint", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* one single index entry ('point') */ case GST_MATROSKA_ID_CUETIME: { if ((ret = gst_ebml_read_uint (ebml, &id, &time)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "CueTime: %" G_GUINT64_FORMAT, time); time = time * demux->time_scale; break; } /* position in the file + track to which it belongs */ case GST_MATROSKA_ID_CUETRACKPOSITIONS: { if ((ret = gst_matroska_demux_parse_index_cuetrack (demux, &nentries)) != GST_FLOW_OK) break; break; } default: GST_WARNING_OBJECT (demux, "Unknown CuePoint subelement 0x%x - ignoring", id); if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) break; break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "CuePoint", ret); if (nentries > 0) { if (time == GST_CLOCK_TIME_NONE) { GST_WARNING_OBJECT (demux, "CuePoint without valid time"); g_array_remove_range (demux->index, demux->index->len - nentries, nentries); } else { gint i; for (i = demux->index->len - nentries; i < demux->index->len; i++) { GstMatroskaIndex *idx = &g_array_index (demux->index, GstMatroskaIndex, i); idx->time = time; GST_DEBUG_OBJECT (demux, "Index entry: pos=%" G_GUINT64_FORMAT ", time=%" GST_TIME_FORMAT ", track=%u, block=%u", idx->pos, GST_TIME_ARGS (idx->time), (guint) idx->track, (guint) idx->block); } } } else { GST_DEBUG_OBJECT (demux, "Empty CuePoint"); } return ret; } static gint gst_matroska_index_compare (GstMatroskaIndex * i1, GstMatroskaIndex * i2) { if (i1->time < i2->time) return -1; else if (i1->time > i2->time) return 1; else if (i1->block < i2->block) return -1; else if (i1->block > i2->block) return 1; else return 0; } static GstFlowReturn gst_matroska_demux_parse_index (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; GstFlowReturn ret = GST_FLOW_OK; if (demux->index) g_array_free (demux->index, TRUE); demux->index = g_array_sized_new (FALSE, FALSE, sizeof (GstMatroskaIndex), 128); DEBUG_ELEMENT_START (demux, ebml, "Cues"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Cues", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* one single index entry ('point') */ case GST_MATROSKA_ID_POINTENTRY: ret = gst_matroska_demux_parse_index_pointentry (demux); break; default: GST_WARNING ("Unknown Cues subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "Cues", ret); /* Sort index by time, smallest time first, for easier searching */ g_array_sort (demux->index, (GCompareFunc) gst_matroska_index_compare); demux->index_parsed = TRUE; return ret; } static GstFlowReturn gst_matroska_demux_parse_info (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret = GST_FLOW_OK; guint32 id; DEBUG_ELEMENT_START (demux, ebml, "SegmentInfo"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "SegmentInfo", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* cluster timecode */ case GST_MATROSKA_ID_TIMECODESCALE:{ guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "TimeCodeScale: %" G_GUINT64_FORMAT, num); demux->time_scale = num; break; } case GST_MATROSKA_ID_DURATION:{ gdouble num; GstClockTime dur; if ((ret = gst_ebml_read_float (ebml, &id, &num)) != GST_FLOW_OK) break; if (num <= 0.0) { GST_WARNING_OBJECT (demux, "Invalid duration %lf", num); break; } GST_DEBUG_OBJECT (demux, "Duration: %lf", num); dur = gst_gdouble_to_guint64 (num * gst_guint64_to_gdouble (demux->time_scale)); if (GST_CLOCK_TIME_IS_VALID (dur) && dur <= G_MAXINT64) demux->duration = dur; break; } case GST_MATROSKA_ID_WRITINGAPP:{ gchar *text; if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "WritingApp: %s", GST_STR_NULL (text)); demux->writing_app = text; break; } case GST_MATROSKA_ID_MUXINGAPP:{ gchar *text; if ((ret = gst_ebml_read_utf8 (ebml, &id, &text)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "MuxingApp: %s", GST_STR_NULL (text)); demux->muxing_app = text; break; } case GST_MATROSKA_ID_DATEUTC:{ gint64 time; if ((ret = gst_ebml_read_date (ebml, &id, &time)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "DateUTC: %" G_GINT64_FORMAT, time); demux->created = time; break; } default: GST_WARNING_OBJECT (demux, "Unknown SegmentInfo subelement 0x%x - ignoring", id); /* fall through */ case GST_MATROSKA_ID_SEGMENTUID: case GST_MATROSKA_ID_SEGMENTFILENAME: case GST_MATROSKA_ID_PREVUID: case GST_MATROSKA_ID_PREVFILENAME: case GST_MATROSKA_ID_NEXTUID: case GST_MATROSKA_ID_NEXTFILENAME: case GST_MATROSKA_ID_TITLE: case GST_MATROSKA_ID_SEGMENTFAMILY: case GST_MATROSKA_ID_CHAPTERTRANSLATE: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "SegmentInfo", ret); demux->segmentinfo_parsed = TRUE; return ret; } static GstFlowReturn gst_matroska_demux_parse_metadata_id_simple_tag (GstMatroskaDemux * demux, GstTagList ** p_taglist) { /* FIXME: check if there are more useful mappings */ 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_BPS, 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}, { GST_MATROSKA_TAG_ID_BPM, GST_TAG_BEATS_PER_MINUTE}, { GST_MATROSKA_TAG_ID_TERMS_OF_USE, GST_TAG_LICENSE}, { GST_MATROSKA_TAG_ID_COMPOSER, GST_TAG_COMPOSER}, { GST_MATROSKA_TAG_ID_LEAD_PERFORMER, GST_TAG_PERFORMER}, { GST_MATROSKA_TAG_ID_GENRE, GST_TAG_GENRE} }; GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret; guint32 id; gchar *value = NULL; gchar *tag = NULL; DEBUG_ELEMENT_START (demux, ebml, "SimpleTag"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "SimpleTag", ret); return ret; } while (ret == GST_FLOW_OK) { /* read all sub-entries */ if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_TAGNAME: g_free (tag); tag = NULL; ret = gst_ebml_read_ascii (ebml, &id, &tag); GST_DEBUG_OBJECT (demux, "TagName: %s", GST_STR_NULL (tag)); break; case GST_MATROSKA_ID_TAGSTRING: g_free (value); value = NULL; ret = gst_ebml_read_utf8 (ebml, &id, &value); GST_DEBUG_OBJECT (demux, "TagString: %s", GST_STR_NULL (value)); break; default: GST_WARNING_OBJECT (demux, "Unknown SimpleTag subelement 0x%x - ignoring", id); /* fall-through */ case GST_MATROSKA_ID_TAGLANGUAGE: case GST_MATROSKA_ID_TAGDEFAULT: case GST_MATROSKA_ID_TAGBINARY: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "SimpleTag", ret); if (tag && value) { guint i; for (i = 0; i < G_N_ELEMENTS (tag_conv); i++) { const gchar *tagname_gst = tag_conv[i].gstreamer_tagname; const gchar *tagname_mkv = tag_conv[i].matroska_tagname; if (strcmp (tagname_mkv, tag) == 0) { GValue dest = { 0, }; GType dest_type = gst_tag_get_type (tagname_gst); g_value_init (&dest, dest_type); if (gst_value_deserialize (&dest, value)) { gst_tag_list_add_values (*p_taglist, GST_TAG_MERGE_APPEND, tagname_gst, &dest, NULL); } else { GST_WARNING_OBJECT (demux, "Can't transform tag '%s' with " "value '%s' to target type '%s'", tag, value, g_type_name (dest_type)); } g_value_unset (&dest); break; } } } g_free (tag); g_free (value); return ret; } static GstFlowReturn gst_matroska_demux_parse_metadata_id_tag (GstMatroskaDemux * demux, GstTagList ** p_taglist) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; GstFlowReturn ret; DEBUG_ELEMENT_START (demux, ebml, "Tag"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Tag", ret); return ret; } while (ret == GST_FLOW_OK) { /* read all sub-entries */ if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_SIMPLETAG: ret = gst_matroska_demux_parse_metadata_id_simple_tag (demux, p_taglist); break; default: GST_WARNING_OBJECT (demux, "Unknown Tag subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "Tag", ret); return ret; } static GstFlowReturn gst_matroska_demux_parse_metadata (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstTagList *taglist; GstFlowReturn ret = GST_FLOW_OK; guint32 id; GList *l; GstEbmlLevel *curlevel; /* Can't be NULL at this point */ g_assert (ebml->level != NULL); curlevel = ebml->level->data; /* Make sure we don't parse a tags element twice and * post it's tags twice */ for (l = demux->tags_parsed; l; l = l->next) { GstEbmlLevel *level = l->data; if (ebml->level) curlevel = ebml->level->data; else break; if (level->start == curlevel->start && level->length == curlevel->length) { GST_DEBUG_OBJECT (demux, "Skipping already parsed Tags at offset %" G_GUINT64_FORMAT, ebml->offset); ret = gst_ebml_read_skip (ebml); return ret; } } DEBUG_ELEMENT_START (demux, ebml, "Tags"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Tags", ret); return ret; } taglist = gst_tag_list_new (); /* TODO: g_slice_dup() if we depend on GLib 2.14 */ curlevel = g_slice_new (GstEbmlLevel); memcpy (curlevel, ebml->level->data, sizeof (GstEbmlLevel)); demux->tags_parsed = g_list_prepend (demux->tags_parsed, curlevel); while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_TAG: ret = gst_matroska_demux_parse_metadata_id_tag (demux, &taglist); break; default: GST_WARNING_OBJECT (demux, "Unknown Tags subelement 0x%x - ignoring", id); /* FIXME: Use to limit the tags to specific pads */ case GST_MATROSKA_ID_TARGETS: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "Tags", ret); if (gst_structure_n_fields (GST_STRUCTURE (taglist)) > 0) { gst_element_found_tags (GST_ELEMENT (ebml), taglist); } else { gst_tag_list_free (taglist); } return ret; } static GstFlowReturn gst_matroska_demux_parse_attached_file (GstMatroskaDemux * demux, GstTagList * taglist) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; GstFlowReturn ret; gchar *description = NULL; gchar *filename = NULL; gchar *mimetype = NULL; guint8 *data = NULL; guint64 datalen = 0; DEBUG_ELEMENT_START (demux, ebml, "AttachedFile"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "AttachedFile", ret); return ret; } while (ret == GST_FLOW_OK) { /* read all sub-entries */ if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_FILEDESCRIPTION: if (description) { GST_WARNING_OBJECT (demux, "FileDescription can only appear once"); break; } ret = gst_ebml_read_utf8 (ebml, &id, &description); GST_DEBUG_OBJECT (demux, "FileDescription: %s", GST_STR_NULL (description)); break; case GST_MATROSKA_ID_FILENAME: if (filename) { GST_WARNING_OBJECT (demux, "FileName can only appear once"); break; } ret = gst_ebml_read_utf8 (ebml, &id, &filename); GST_DEBUG_OBJECT (demux, "FileName: %s", GST_STR_NULL (filename)); break; case GST_MATROSKA_ID_FILEMIMETYPE: if (mimetype) { GST_WARNING_OBJECT (demux, "FileMimeType can only appear once"); break; } ret = gst_ebml_read_ascii (ebml, &id, &mimetype); GST_DEBUG_OBJECT (demux, "FileMimeType: %s", GST_STR_NULL (mimetype)); break; case GST_MATROSKA_ID_FILEDATA: if (data) { GST_WARNING_OBJECT (demux, "FileData can only appear once"); break; } ret = gst_ebml_read_binary (ebml, &id, &data, &datalen); GST_DEBUG_OBJECT (demux, "FileData of size %" G_GUINT64_FORMAT, datalen); break; default: GST_WARNING_OBJECT (demux, "Unknown AttachedFile subelement 0x%x - ignoring", id); /* fall through */ case GST_MATROSKA_ID_FILEUID: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "AttachedFile", ret); if (filename && mimetype && data && datalen > 0) { GstTagImageType image_type = GST_TAG_IMAGE_TYPE_NONE; GstBuffer *tagbuffer = NULL; GstCaps *caps; gchar *filename_lc = g_utf8_strdown (filename, -1); GST_DEBUG_OBJECT (demux, "Creating tag for attachment with filename '%s', " "mimetype '%s', description '%s', size %" G_GUINT64_FORMAT, filename, mimetype, GST_STR_NULL (description), datalen); /* TODO: better heuristics for different image types */ if (strstr (filename_lc, "cover")) { if (strstr (filename_lc, "back")) image_type = GST_TAG_IMAGE_TYPE_BACK_COVER; else image_type = GST_TAG_IMAGE_TYPE_FRONT_COVER; } else if (g_str_has_prefix (mimetype, "image/") || g_str_has_suffix (filename_lc, "png") || g_str_has_suffix (filename_lc, "jpg") || g_str_has_suffix (filename_lc, "jpeg") || g_str_has_suffix (filename_lc, "gif") || g_str_has_suffix (filename_lc, "bmp")) { image_type = GST_TAG_IMAGE_TYPE_UNDEFINED; } g_free (filename_lc); /* First try to create an image tag buffer from this */ if (image_type != GST_TAG_IMAGE_TYPE_NONE) { tagbuffer = gst_tag_image_data_to_image_buffer (data, datalen, image_type); if (!tagbuffer) image_type = GST_TAG_IMAGE_TYPE_NONE; } /* if this failed create an attachment buffer */ if (!tagbuffer) { tagbuffer = gst_buffer_new_and_alloc (datalen); memcpy (GST_BUFFER_DATA (tagbuffer), data, datalen); GST_BUFFER_SIZE (tagbuffer) = datalen; caps = gst_type_find_helper_for_buffer (NULL, tagbuffer, NULL); if (caps == NULL) caps = gst_caps_new_simple (mimetype, NULL); gst_buffer_set_caps (tagbuffer, caps); gst_caps_unref (caps); } /* Set filename and description on the caps */ caps = GST_BUFFER_CAPS (tagbuffer); gst_caps_set_simple (caps, "filename", G_TYPE_STRING, filename, NULL); if (description) gst_caps_set_simple (caps, "description", G_TYPE_STRING, description, NULL); GST_DEBUG_OBJECT (demux, "Created attachment buffer with caps: %" GST_PTR_FORMAT, caps); /* and append to the tag list */ if (image_type != GST_TAG_IMAGE_TYPE_NONE) gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND, GST_TAG_IMAGE, tagbuffer, NULL); else gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND, GST_TAG_ATTACHMENT, tagbuffer, NULL); } g_free (filename); g_free (mimetype); g_free (data); g_free (description); return ret; } static GstFlowReturn gst_matroska_demux_parse_attachments (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; GstFlowReturn ret = GST_FLOW_OK; GstTagList *taglist; DEBUG_ELEMENT_START (demux, ebml, "Attachments"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Attachments", ret); return ret; } taglist = gst_tag_list_new (); while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_ATTACHEDFILE: ret = gst_matroska_demux_parse_attached_file (demux, taglist); break; default: GST_WARNING ("Unknown Attachments subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "Attachments", ret); if (gst_structure_n_fields (GST_STRUCTURE (taglist)) > 0) { GST_DEBUG_OBJECT (demux, "Posting attachment tags"); gst_element_found_tags (GST_ELEMENT (ebml), taglist); } else { GST_DEBUG_OBJECT (demux, "No valid attachments found"); gst_tag_list_free (taglist); } demux->attachments_parsed = TRUE; return ret; } static GstFlowReturn gst_matroska_demux_parse_chapters (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); guint32 id; GstFlowReturn ret = GST_FLOW_OK; GST_WARNING_OBJECT (demux, "Parsing of chapters not implemented yet"); /* TODO: implement parsing of chapters */ DEBUG_ELEMENT_START (demux, ebml, "Chapters"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Chapters", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { default: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "Chapters", ret); return ret; } /* * Read signed/unsigned "EBML" numbers. * Return: number of bytes processed. */ static gint gst_matroska_ebmlnum_uint (guint8 * data, guint size, guint64 * num) { gint len_mask = 0x80, read = 1, n = 1, num_ffs = 0; guint64 total; if (size <= 0) { return -1; } total = data[0]; while (read <= 8 && !(total & len_mask)) { read++; len_mask >>= 1; } if (read > 8) return -1; if ((total &= (len_mask - 1)) == len_mask - 1) num_ffs++; if (size < read) return -1; while (n < read) { if (data[n] == 0xff) num_ffs++; total = (total << 8) | data[n]; n++; } if (read == num_ffs && total != 0) *num = G_MAXUINT64; else *num = total; return read; } static gint gst_matroska_ebmlnum_sint (guint8 * data, guint size, gint64 * num) { guint64 unum; gint res; /* read as unsigned number first */ if ((res = gst_matroska_ebmlnum_uint (data, size, &unum)) < 0) return -1; /* make signed */ if (unum == G_MAXUINT64) *num = G_MAXINT64; else *num = unum - ((1 << ((7 * res) - 1)) - 1); return res; } /* * Mostly used for subtitles. We add void filler data for each * lagging stream to make sure we don't deadlock. */ static void gst_matroska_demux_sync_streams (GstMatroskaDemux * demux) { gint stream_nr; GST_LOG_OBJECT (demux, "Sync to %" GST_TIME_FORMAT, GST_TIME_ARGS (demux->segment.last_stop)); g_assert (demux->num_streams == demux->src->len); for (stream_nr = 0; stream_nr < demux->src->len; stream_nr++) { GstMatroskaTrackContext *context; context = g_ptr_array_index (demux->src, stream_nr); GST_LOG_OBJECT (demux, "Checking for resync on stream %d (%" GST_TIME_FORMAT ")", stream_nr, GST_TIME_ARGS (context->pos)); /* does it lag? 0.5 seconds is a random treshold... */ if (context->pos + (GST_SECOND / 2) < demux->segment.last_stop) { GST_DEBUG_OBJECT (demux, "Synchronizing stream %d with others by advancing time " "from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT, stream_nr, GST_TIME_ARGS (context->pos), GST_TIME_ARGS (demux->segment.last_stop)); context->pos = demux->segment.last_stop; /* advance stream time */ gst_pad_push_event (context->pad, gst_event_new_new_segment (TRUE, demux->segment.rate, GST_FORMAT_TIME, demux->segment.last_stop, -1, demux->segment.last_stop)); } } } static GstFlowReturn gst_matroska_demux_push_hdr_buf (GstMatroskaDemux * demux, GstMatroskaTrackContext * stream, guint8 * data, guint len) { GstFlowReturn ret, cret; GstBuffer *header_buf = NULL; ret = gst_pad_alloc_buffer_and_set_caps (stream->pad, GST_BUFFER_OFFSET_NONE, len, stream->caps, &header_buf); /* we combine but don't use the combined value to check if we have a buffer * or not. The combined value is what we return. */ cret = gst_matroska_demux_combine_flows (demux, stream, ret); if (ret != GST_FLOW_OK) goto no_buffer; memcpy (GST_BUFFER_DATA (header_buf), data, len); if (stream->set_discont) { GST_BUFFER_FLAG_SET (header_buf, GST_BUFFER_FLAG_DISCONT); stream->set_discont = FALSE; } ret = gst_pad_push (stream->pad, header_buf); /* combine flows */ cret = gst_matroska_demux_combine_flows (demux, stream, ret); return cret; /* ERRORS */ no_buffer: { GST_DEBUG_OBJECT (demux, "could not alloc buffer: %s, combined %s", gst_flow_get_name (ret), gst_flow_get_name (cret)); return cret; } } static GstFlowReturn gst_matroska_demux_push_flac_codec_priv_data (GstMatroskaDemux * demux, GstMatroskaTrackContext * stream) { GstFlowReturn ret; guint8 *pdata; guint off, len; GST_LOG_OBJECT (demux, "priv data size = %u", stream->codec_priv_size); pdata = (guint8 *) stream->codec_priv; /* need at least 'fLaC' marker + STREAMINFO metadata block */ if (stream->codec_priv_size < ((4) + (4 + 34))) { GST_WARNING_OBJECT (demux, "not enough codec priv data for flac headers"); return GST_FLOW_ERROR; } if (memcmp (pdata, "fLaC", 4) != 0) { GST_WARNING_OBJECT (demux, "no flac marker at start of stream headers"); return GST_FLOW_ERROR; } ret = gst_matroska_demux_push_hdr_buf (demux, stream, pdata, 4); if (ret != GST_FLOW_OK) return ret; off = 4; /* skip fLaC marker */ while (off < stream->codec_priv_size) { len = GST_READ_UINT8 (pdata + off + 1) << 16; len |= GST_READ_UINT8 (pdata + off + 2) << 8; len |= GST_READ_UINT8 (pdata + off + 3); GST_DEBUG_OBJECT (demux, "header packet: len=%u bytes, flags=0x%02x", len, (guint) pdata[off]); ret = gst_matroska_demux_push_hdr_buf (demux, stream, pdata + off, len); if (ret != GST_FLOW_OK) return ret; off += 4 + len; } return GST_FLOW_OK; } static GstFlowReturn gst_matroska_demux_push_xiph_codec_priv_data (GstMatroskaDemux * demux, GstMatroskaTrackContext * stream) { GstFlowReturn ret; guint8 *p = (guint8 *) stream->codec_priv; gint i, offset, length, num_packets; /* start of the stream and vorbis audio or theora video, need to * send the codec_priv data as first three packets */ num_packets = p[0] + 1; GST_DEBUG_OBJECT (demux, "%u stream headers, total length=%u bytes", (guint) num_packets, stream->codec_priv_size); offset = num_packets; /* offset to data of first packet */ for (i = 0; i < num_packets - 1; i++) { length = p[i + 1]; GST_DEBUG_OBJECT (demux, "buffer %d: length=%u bytes", i, (guint) length); if (offset + length > stream->codec_priv_size) return GST_FLOW_ERROR; ret = gst_matroska_demux_push_hdr_buf (demux, stream, p + offset, length); if (ret != GST_FLOW_OK) return ret; offset += length; } length = stream->codec_priv_size - offset; GST_DEBUG_OBJECT (demux, "buffer %d: length=%u bytes", i, (guint) length); ret = gst_matroska_demux_push_hdr_buf (demux, stream, p + offset, length); if (ret != GST_FLOW_OK) return ret; return GST_FLOW_OK; } static void gst_matroska_demux_push_dvd_clut_change_event (GstMatroskaDemux * demux, GstMatroskaTrackContext * stream) { gchar *buf, *start; g_assert (!strcmp (stream->codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_VOBSUB)); if (!stream->codec_priv) return; /* ideally, VobSub private data should be parsed and stored more convenient * elsewhere, but for now, only interested in a small part */ /* make sure we have terminating 0 */ buf = g_strndup (stream->codec_priv, stream->codec_priv_size); /* just locate and parse palette part */ start = strstr (stream->codec_priv, "palette:"); if (start) { gint i; guint32 clut[16]; guint32 col; guint8 r, g, b, y, u, v; start += 8; while (g_ascii_isspace (*start)) start++; for (i = 0; i < 16; i++) { if (sscanf (start, "%06x", &col) != 1) break; start += 6; while ((*start == ',') || g_ascii_isspace (*start)) start++; /* sigh, need to convert this from vobsub pseudo-RGB to YUV */ r = (col >> 16) & 0xff; g = (col >> 8) & 0xff; b = col & 0xff; y = CLAMP ((0.1494 * r + 0.6061 * g + 0.2445 * b) * 219 / 255 + 16, 0, 255); u = CLAMP (0.6066 * r - 0.4322 * g - 0.1744 * b + 128, 0, 255); v = CLAMP (-0.08435 * r - 0.3422 * g + 0.4266 * b + 128, 0, 255); clut[i] = (y << 16) | (u << 8) | v; } /* got them all without problems; build and send event */ if (i == 16) { GstStructure *s; s = gst_structure_new ("application/x-gst-dvd", "event", G_TYPE_STRING, "dvd-spu-clut-change", "clut00", G_TYPE_INT, clut[0], "clut01", G_TYPE_INT, clut[1], "clut02", G_TYPE_INT, clut[2], "clut03", G_TYPE_INT, clut[3], "clut04", G_TYPE_INT, clut[4], "clut05", G_TYPE_INT, clut[5], "clut06", G_TYPE_INT, clut[6], "clut07", G_TYPE_INT, clut[7], "clut08", G_TYPE_INT, clut[8], "clut09", G_TYPE_INT, clut[9], "clut10", G_TYPE_INT, clut[10], "clut11", G_TYPE_INT, clut[11], "clut12", G_TYPE_INT, clut[12], "clut13", G_TYPE_INT, clut[13], "clut14", G_TYPE_INT, clut[14], "clut15", G_TYPE_INT, clut[15], NULL); gst_pad_push_event (stream->pad, gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s)); } } g_free (buf); } static GstFlowReturn gst_matroska_demux_add_mpeg_seq_header (GstElement * element, GstMatroskaTrackContext * stream, GstBuffer ** buf) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element); guint8 *seq_header; guint seq_header_len; guint32 header; if (stream->codec_state) { seq_header = stream->codec_state; seq_header_len = stream->codec_state_size; } else if (stream->codec_priv) { seq_header = stream->codec_priv; seq_header_len = stream->codec_priv_size; } else { return GST_FLOW_OK; } /* Sequence header only needed for keyframes */ if (GST_BUFFER_FLAG_IS_SET (*buf, GST_BUFFER_FLAG_DELTA_UNIT)) return GST_FLOW_OK; if (GST_BUFFER_SIZE (*buf) < 4) return GST_FLOW_OK; header = GST_READ_UINT32_BE (GST_BUFFER_DATA (*buf)); /* Sequence start code, if not found prepend */ if (header != 0x000001b3) { GstBuffer *newbuf; GstFlowReturn ret, cret; ret = gst_pad_alloc_buffer_and_set_caps (stream->pad, GST_BUFFER_OFFSET_NONE, GST_BUFFER_SIZE (*buf) + seq_header_len, stream->caps, &newbuf); cret = gst_matroska_demux_combine_flows (demux, stream, ret); if (ret != GST_FLOW_OK) { GST_WARNING_OBJECT (demux, "Reallocating buffer for sequence header " "failed: %s, combined flow return: %s", gst_flow_get_name (ret), gst_flow_get_name (cret)); return cret; } GST_DEBUG_OBJECT (demux, "Prepending MPEG sequence header"); gst_buffer_copy_metadata (newbuf, *buf, GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS); g_memmove (GST_BUFFER_DATA (newbuf), seq_header, seq_header_len); g_memmove (GST_BUFFER_DATA (newbuf) + seq_header_len, GST_BUFFER_DATA (*buf), GST_BUFFER_SIZE (*buf)); gst_buffer_unref (*buf); *buf = newbuf; } return GST_FLOW_OK; } static GstFlowReturn gst_matroska_demux_add_wvpk_header (GstElement * element, GstMatroskaTrackContext * stream, GstBuffer ** buf) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element); GstMatroskaTrackAudioContext *audiocontext = (GstMatroskaTrackAudioContext *) stream; GstBuffer *newbuf = NULL; guint8 *data; guint newlen; GstFlowReturn ret, cret = GST_FLOW_OK; Wavpack4Header wvh; wvh.ck_id[0] = 'w'; wvh.ck_id[1] = 'v'; wvh.ck_id[2] = 'p'; wvh.ck_id[3] = 'k'; wvh.version = GST_READ_UINT16_LE (stream->codec_priv); wvh.track_no = 0; wvh.index_no = 0; wvh.total_samples = -1; wvh.block_index = audiocontext->wvpk_block_index; if (audiocontext->channels <= 2) { guint32 block_samples; block_samples = GST_READ_UINT32_LE (GST_BUFFER_DATA (*buf)); /* we need to reconstruct the header of the wavpack block */ /* -20 because ck_size is the size of the wavpack block -8 * and lace_size is the size of the wavpack block + 12 * (the three guint32 of the header that already are in the buffer) */ wvh.ck_size = GST_BUFFER_SIZE (*buf) + sizeof (Wavpack4Header) - 20; /* block_samples, flags and crc are already in the buffer */ newlen = GST_BUFFER_SIZE (*buf) + sizeof (Wavpack4Header) - 12; ret = gst_pad_alloc_buffer_and_set_caps (stream->pad, GST_BUFFER_OFFSET_NONE, newlen, stream->caps, &newbuf); cret = gst_matroska_demux_combine_flows (demux, stream, ret); if (ret != GST_FLOW_OK) { GST_DEBUG_OBJECT (demux, "pad_alloc failed %s, combined %s", gst_flow_get_name (ret), gst_flow_get_name (cret)); return cret; } data = GST_BUFFER_DATA (newbuf); data[0] = 'w'; data[1] = 'v'; data[2] = 'p'; data[3] = 'k'; GST_WRITE_UINT32_LE (data + 4, wvh.ck_size); GST_WRITE_UINT16_LE (data + 8, wvh.version); GST_WRITE_UINT8 (data + 10, wvh.track_no); GST_WRITE_UINT8 (data + 11, wvh.index_no); GST_WRITE_UINT32_LE (data + 12, wvh.total_samples); GST_WRITE_UINT32_LE (data + 16, wvh.block_index); g_memmove (data + 20, GST_BUFFER_DATA (*buf), GST_BUFFER_SIZE (*buf)); gst_buffer_copy_metadata (newbuf, *buf, GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS); gst_buffer_unref (*buf); *buf = newbuf; audiocontext->wvpk_block_index += block_samples; } else { guint8 *outdata; guint outpos = 0; guint size; guint32 block_samples, flags, crc, blocksize; data = GST_BUFFER_DATA (*buf); size = GST_BUFFER_SIZE (*buf); if (size < 4) { GST_ERROR_OBJECT (demux, "Too small wavpack buffer"); return GST_FLOW_ERROR; } block_samples = GST_READ_UINT32_LE (data); data += 4; size -= 4; while (size > 12) { flags = GST_READ_UINT32_LE (data); data += 4; size -= 4; crc = GST_READ_UINT32_LE (data); data += 4; size -= 4; blocksize = GST_READ_UINT32_LE (data); data += 4; size -= 4; if (blocksize == 0 || size < blocksize) break; if (newbuf == NULL) { newbuf = gst_buffer_new_and_alloc (sizeof (Wavpack4Header) + blocksize); gst_buffer_set_caps (newbuf, stream->caps); gst_buffer_copy_metadata (newbuf, *buf, GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS); outpos = 0; outdata = GST_BUFFER_DATA (newbuf); } else { GST_BUFFER_SIZE (newbuf) += sizeof (Wavpack4Header) + blocksize; GST_BUFFER_DATA (newbuf) = g_realloc (GST_BUFFER_DATA (newbuf), GST_BUFFER_SIZE (newbuf)); GST_BUFFER_MALLOCDATA (newbuf) = GST_BUFFER_DATA (newbuf); outdata = GST_BUFFER_DATA (newbuf); } outdata[outpos] = 'w'; outdata[outpos + 1] = 'v'; outdata[outpos + 2] = 'p'; outdata[outpos + 3] = 'k'; outpos += 4; GST_WRITE_UINT32_LE (outdata + outpos, blocksize + sizeof (Wavpack4Header) - 8); GST_WRITE_UINT16_LE (outdata + outpos + 4, wvh.version); GST_WRITE_UINT8 (outdata + outpos + 6, wvh.track_no); GST_WRITE_UINT8 (outdata + outpos + 7, wvh.index_no); GST_WRITE_UINT32_LE (outdata + outpos + 8, wvh.total_samples); GST_WRITE_UINT32_LE (outdata + outpos + 12, wvh.block_index); GST_WRITE_UINT32_LE (outdata + outpos + 16, block_samples); GST_WRITE_UINT32_LE (outdata + outpos + 20, flags); GST_WRITE_UINT32_LE (outdata + outpos + 24, crc); outpos += 28; g_memmove (outdata + outpos, data, blocksize); outpos += blocksize; data += blocksize; size -= blocksize; } gst_buffer_unref (*buf); *buf = newbuf; audiocontext->wvpk_block_index += block_samples; } return cret; } static GstFlowReturn gst_matroska_demux_check_subtitle_buffer (GstElement * element, GstMatroskaTrackContext * stream, GstBuffer ** buf) { GstMatroskaTrackSubtitleContext *sub_stream; const gchar *encoding, *data; GError *err = NULL; GstBuffer *newbuf; gchar *utf8; guint size; sub_stream = (GstMatroskaTrackSubtitleContext *) stream; data = (const gchar *) GST_BUFFER_DATA (*buf); size = GST_BUFFER_SIZE (*buf); if (!sub_stream->invalid_utf8) { if (g_utf8_validate (data, size, NULL)) { return GST_FLOW_OK; } GST_WARNING_OBJECT (element, "subtitle stream %d is not valid UTF-8, this " "is broken according to the matroska specification", stream->num); sub_stream->invalid_utf8 = TRUE; } /* file with broken non-UTF8 subtitle, do the best we can do to fix it */ encoding = g_getenv ("GST_SUBTITLE_ENCODING"); if (encoding == NULL || *encoding == '\0') { /* if local encoding is UTF-8 and no encoding specified * via the environment variable, assume ISO-8859-15 */ if (g_get_charset (&encoding)) { encoding = "ISO-8859-15"; } } utf8 = g_convert_with_fallback (data, size, "UTF-8", encoding, "*", NULL, NULL, &err); if (err) { GST_LOG_OBJECT (element, "could not convert string from '%s' to UTF-8: %s", encoding, err->message); g_error_free (err); g_free (utf8); /* invalid input encoding, fall back to ISO-8859-15 (always succeeds) */ encoding = "ISO-8859-15"; utf8 = g_convert_with_fallback (data, size, "UTF-8", encoding, "*", NULL, NULL, NULL); } GST_LOG_OBJECT (element, "converted subtitle text from %s to UTF-8 %s", encoding, (err) ? "(using ISO-8859-15 as fallback)" : ""); if (utf8 == NULL) utf8 = g_strdup ("invalid subtitle"); newbuf = gst_buffer_new (); GST_BUFFER_MALLOCDATA (newbuf) = (guint8 *) utf8; GST_BUFFER_DATA (newbuf) = (guint8 *) utf8; GST_BUFFER_SIZE (newbuf) = strlen (utf8); gst_buffer_copy_metadata (newbuf, *buf, GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_FLAGS); gst_buffer_unref (buf); *buf = newbuf; return GST_FLOW_OK; } static GstFlowReturn gst_matroska_demux_parse_blockgroup_or_simpleblock (GstMatroskaDemux * demux, guint64 cluster_time, gboolean is_simpleblock) { GstMatroskaTrackContext *stream = NULL; GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret = GST_FLOW_OK; gboolean readblock = FALSE; guint32 id; guint64 block_duration = 0; GstBuffer *buf = NULL; gint stream_num = -1, n, laces = 0; guint size = 0; gint *lace_size = NULL; gint64 time = 0; gint flags = 0; gint64 referenceblock = 0; while (ret == GST_FLOW_OK) { if (!is_simpleblock) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } } else { id = GST_MATROSKA_ID_SIMPLEBLOCK; } switch (id) { /* one block inside the group. Note, block parsing is one * of the harder things, so this code is a bit complicated. * See http://www.matroska.org/ for documentation. */ case GST_MATROSKA_ID_SIMPLEBLOCK: case GST_MATROSKA_ID_BLOCK: { guint64 num; guint8 *data; if ((ret = gst_ebml_read_buffer (ebml, &id, &buf)) != GST_FLOW_OK) 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); buf = NULL; ret = GST_FLOW_ERROR; break; } data += n; size -= n; /* fetch stream from num */ stream_num = gst_matroska_demux_stream_from_num (demux, num); if (size < 3 || stream_num < 0 || stream_num >= demux->num_streams) { gst_buffer_unref (buf); buf = NULL; GST_WARNING_OBJECT (demux, "Invalid stream %d or size %u", stream_num, size); ret = GST_FLOW_ERROR; break; } stream = g_ptr_array_index (demux->src, stream_num); /* time (relative to cluster time) */ time = ((gint16) GST_READ_UINT16_BE (data)); data += 2; size -= 2; flags = GST_READ_UINT8 (data); data += 1; size -= 1; switch ((flags & 0x06) >> 1) { case 0x0: /* no lacing */ laces = 1; lace_size = g_new (gint, 1); lace_size[0] = size; break; case 0x1: /* xiph lacing */ case 0x2: /* fixed-size lacing */ case 0x3: /* EBML lacing */ if (size == 0) { GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL), ("Invalid lacing size")); ret = GST_FLOW_ERROR; break; } laces = GST_READ_UINT8 (data) + 1; data += 1; size -= 1; lace_size = g_new0 (gint, laces); switch ((flags & 0x06) >> 1) { case 0x1: /* xiph lacing */ { guint temp, total = 0; for (n = 0; ret == GST_FLOW_OK && n < laces - 1; n++) { while (1) { if (size == 0) { GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL), ("Invalid lacing size")); ret = GST_FLOW_ERROR; break; } temp = GST_READ_UINT8 (data); lace_size[n] += temp; data += 1; size -= 1; if (temp != 0xff) break; } total += lace_size[n]; } lace_size[n] = size - total; break; } case 0x2: /* fixed-size lacing */ for (n = 0; n < laces; n++) lace_size[n] = size / laces; break; case 0x3: /* EBML lacing */ { guint total; if ((n = gst_matroska_ebmlnum_uint (data, size, &num)) < 0) { GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL), ("Data error")); ret = GST_FLOW_ERROR; break; } data += n; size -= n; total = lace_size[0] = num; for (n = 1; ret == GST_FLOW_OK && 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")); ret = GST_FLOW_ERROR; break; } data += r; size -= r; lace_size[n] = lace_size[n - 1] + snum; total += lace_size[n]; } if (n < laces) lace_size[n] = size - total; break; } } break; } if (stream->send_xiph_headers) { ret = gst_matroska_demux_push_xiph_codec_priv_data (demux, stream); stream->send_xiph_headers = FALSE; } if (stream->send_flac_headers) { ret = gst_matroska_demux_push_flac_codec_priv_data (demux, stream); stream->send_flac_headers = FALSE; } if (stream->send_dvd_event) { gst_matroska_demux_push_dvd_clut_change_event (demux, stream); /* FIXME: should we send this event again after (flushing) seek ? */ stream->send_dvd_event = FALSE; } if (ret != GST_FLOW_OK) break; readblock = TRUE; break; } case GST_MATROSKA_ID_BLOCKDURATION:{ ret = gst_ebml_read_uint (ebml, &id, &block_duration); GST_DEBUG_OBJECT (demux, "BlockDuration: %" G_GUINT64_FORMAT, block_duration); break; } case GST_MATROSKA_ID_REFERENCEBLOCK:{ ret = gst_ebml_read_sint (ebml, &id, &referenceblock); GST_DEBUG_OBJECT (demux, "ReferenceBlock: %" G_GINT64_FORMAT, referenceblock); break; } case GST_MATROSKA_ID_CODECSTATE:{ guint8 *data; guint64 data_len = 0; if ((ret = gst_ebml_read_binary (ebml, &id, &data, &data_len)) != GST_FLOW_OK) break; g_free (stream->codec_state); stream->codec_state = data; stream->codec_state_size = data_len; /* Decode if necessary */ if (stream->encodings && stream->encodings->len > 0 && stream->codec_state && stream->codec_state_size > 0) { if (!gst_matroska_decode_data (stream->encodings, (guint8 **) & stream->codec_state, &stream->codec_state_size, GST_MATROSKA_TRACK_ENCODING_SCOPE_CODEC_DATA, TRUE)) { GST_WARNING_OBJECT (demux, "Decoding codec state failed"); } } GST_DEBUG_OBJECT (demux, "CodecState of %u bytes", stream->codec_state_size); break; } default: GST_WARNING_OBJECT (demux, "Unknown BlockGroup subelement 0x%x - ignoring", id); /* fall-through */ case GST_MATROSKA_ID_BLOCKVIRTUAL: case GST_MATROSKA_ID_BLOCKADDITIONS: case GST_MATROSKA_ID_REFERENCEPRIORITY: case GST_MATROSKA_ID_REFERENCEVIRTUAL: case GST_MATROSKA_ID_SLICES: ret = gst_ebml_read_skip (ebml); break; } if (is_simpleblock) break; if (demux->level_up) { demux->level_up--; break; } } if (ret == GST_FLOW_OK && readblock) { guint64 duration = 0; gint64 lace_time = 0; stream = g_ptr_array_index (demux->src, stream_num); if (cluster_time != GST_CLOCK_TIME_NONE) { /* FIXME: What to do with negative timestamps? Give timestamp 0 or -1? * Drop unless the lace contains timestamp 0? */ if (time < 0 && (-time) > cluster_time) { lace_time = 0; } else { if (stream->timecodescale == 1.0) lace_time = (cluster_time + time) * demux->time_scale; else lace_time = gst_util_guint64_to_gdouble ((cluster_time + time) * demux->time_scale) * stream->timecodescale; } } else { lace_time = GST_CLOCK_TIME_NONE; } if (block_duration) { if (stream->timecodescale == 1.0) duration = block_duration * demux->time_scale; else duration = gst_util_gdouble_to_guint64 (gst_util_guint64_to_gdouble (block_duration * demux->time_scale) * stream->timecodescale); } else if (stream->default_duration) { duration = stream->default_duration * laces; } /* else duration is diff between timecode of this and next block */ for (n = 0; n < laces; n++) { GstBuffer *sub; GstClockTimeDiff diff; sub = gst_buffer_create_sub (buf, GST_BUFFER_SIZE (buf) - size, lace_size[n]); if (stream->encodings != NULL && stream->encodings->len > 0) sub = gst_matroska_decode_buffer (stream, sub); if (sub == NULL) { GST_WARNING_OBJECT (demux, "Decoding buffer failed"); goto next_lace; } GST_BUFFER_TIMESTAMP (sub) = lace_time; if (lace_time != GST_CLOCK_TIME_NONE) { demux->segment.last_stop = lace_time; diff = GST_CLOCK_DIFF (stream->pos, lace_time); if (diff < -GST_SECOND / 2 || diff > GST_SECOND / 2) { GST_DEBUG_OBJECT (demux, "Gap of %" G_GINT64_FORMAT " ns detected in" "stream %d. Sending updated NEWSEGMENT event", diff, stream->index); gst_pad_push_event (stream->pad, gst_event_new_new_segment (TRUE, demux->segment.rate, GST_FORMAT_TIME, lace_time, -1, lace_time)); } } stream->pos = demux->segment.last_stop; gst_matroska_demux_sync_streams (demux); if (duration) { GST_BUFFER_DURATION (sub) = duration / laces; stream->pos += GST_BUFFER_DURATION (sub); demux->segment.last_stop += GST_BUFFER_DURATION (sub); } if (is_simpleblock) { if (flags & 0x80) GST_BUFFER_FLAG_UNSET (sub, GST_BUFFER_FLAG_DELTA_UNIT); else GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DELTA_UNIT); } else { if (referenceblock) { GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DELTA_UNIT); } else { GST_BUFFER_FLAG_UNSET (sub, GST_BUFFER_FLAG_DELTA_UNIT); } } if (GST_BUFFER_FLAG_IS_SET (sub, GST_BUFFER_FLAG_DELTA_UNIT) && stream->set_discont) { /* When doing seeks or such, we need to restart on key frames or * decoders might choke. */ goto done; } if (stream->set_discont) { GST_BUFFER_FLAG_SET (sub, GST_BUFFER_FLAG_DISCONT); stream->set_discont = FALSE; } GST_DEBUG_OBJECT (demux, "Pushing lace %d, data of size %d for stream %d, time=%" GST_TIME_FORMAT " and duration=%" GST_TIME_FORMAT, n, GST_BUFFER_SIZE (sub), stream_num, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (sub)), GST_TIME_ARGS (GST_BUFFER_DURATION (sub))); gst_buffer_set_caps (sub, GST_PAD_CAPS (stream->pad)); /* Postprocess the buffers depending on the codec used */ if (stream->postprocess_frame) { ret = stream->postprocess_frame (GST_ELEMENT (demux), stream, &sub); } ret = gst_pad_push (stream->pad, sub); /* combine flows */ ret = gst_matroska_demux_combine_flows (demux, stream, ret); next_lace: size -= lace_size[n]; if (lace_time != GST_CLOCK_TIME_NONE && duration) lace_time += duration / laces; else lace_time = GST_CLOCK_TIME_NONE; } } done: if (readblock) gst_buffer_unref (buf); g_free (lace_size); return ret; } static GstFlowReturn gst_matroska_demux_parse_cluster (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret = GST_FLOW_OK; guint64 cluster_time = GST_CLOCK_TIME_NONE; guint32 id; DEBUG_ELEMENT_START (demux, ebml, "Cluster"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Cluster", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { /* cluster timecode */ case GST_MATROSKA_ID_CLUSTERTIMECODE: { guint64 num; if ((ret = gst_ebml_read_uint (ebml, &id, &num)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "ClusterTimeCode: %" G_GUINT64_FORMAT, num); cluster_time = num; break; } /* a group of blocks inside a cluster */ case GST_MATROSKA_ID_BLOCKGROUP: DEBUG_ELEMENT_START (demux, ebml, "BlockGroup"); if ((ret = gst_ebml_read_master (ebml, &id)) == GST_FLOW_OK) { ret = gst_matroska_demux_parse_blockgroup_or_simpleblock (demux, cluster_time, FALSE); } DEBUG_ELEMENT_STOP (demux, ebml, "BlockGroup", ret); break; case GST_MATROSKA_ID_SIMPLEBLOCK: { DEBUG_ELEMENT_START (demux, ebml, "SimpleBlock"); ret = gst_matroska_demux_parse_blockgroup_or_simpleblock (demux, cluster_time, TRUE); DEBUG_ELEMENT_STOP (demux, ebml, "SimpleBlock", ret); break; } default: GST_WARNING ("Unknown Cluster subelement 0x%x - ignoring", id); /* fall-through */ case GST_MATROSKA_ID_POSITION: case GST_MATROSKA_ID_PREVSIZE: case GST_MATROSKA_ID_ENCRYPTEDBLOCK: case GST_MATROSKA_ID_SILENTTRACKS: ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "Cluster", ret); return ret; } static GstFlowReturn gst_matroska_demux_parse_contents_seekentry (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret; guint64 seek_pos = (guint64) - 1; guint32 seek_id = 0; guint32 id; DEBUG_ELEMENT_START (demux, ebml, "Seek"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) { DEBUG_ELEMENT_STOP (demux, ebml, "Seek", ret); return ret; } while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_SEEKID: { guint64 t; if ((ret = gst_ebml_read_uint (ebml, &id, &t)) != GST_FLOW_OK) break; GST_DEBUG_OBJECT (demux, "SeekID: %" G_GUINT64_FORMAT, t); seek_id = t; break; } case GST_MATROSKA_ID_SEEKPOSITION: { guint64 t; if ((ret = gst_ebml_read_uint (ebml, &id, &t)) != GST_FLOW_OK) break; if (t > G_MAXINT64) { GST_WARNING_OBJECT (demux, "Too large SeekPosition %" G_GUINT64_FORMAT, t); break; } GST_DEBUG_OBJECT (demux, "SeekPosition: %" G_GUINT64_FORMAT, t); seek_pos = t; break; } default: GST_WARNING_OBJECT (demux, "Unknown SeekHead subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } if (ret != GST_FLOW_OK && ret != GST_FLOW_UNEXPECTED) return ret; if (!seek_id || seek_pos == (guint64) - 1) { GST_WARNING_OBJECT (demux, "Incomplete seekhead entry (0x%x/%" G_GUINT64_FORMAT ")", seek_id, seek_pos); return GST_FLOW_OK; } switch (seek_id) { case GST_MATROSKA_ID_CUES: case GST_MATROSKA_ID_TAGS: case GST_MATROSKA_ID_TRACKS: case GST_MATROSKA_ID_SEEKHEAD: case GST_MATROSKA_ID_SEGMENTINFO: case GST_MATROSKA_ID_ATTACHMENTS: case GST_MATROSKA_ID_CHAPTERS: { guint level_up = demux->level_up; guint64 before_pos, length; GstEbmlLevel *level; /* remember */ length = gst_ebml_read_get_length (ebml); before_pos = ebml->offset; /* check for validity */ if (seek_pos + demux->ebml_segment_start + 12 >= length) { GST_WARNING_OBJECT (demux, "SeekHead reference lies outside file!" " (%" G_GUINT64_FORMAT "+%" G_GUINT64_FORMAT "+12 >= %" G_GUINT64_FORMAT ")", seek_pos, demux->ebml_segment_start, length); break; } /* seek */ if (gst_ebml_read_seek (ebml, seek_pos + demux->ebml_segment_start) != GST_FLOW_OK) break; /* we don't want to lose our seekhead level, so we add * a dummy. This is a crude hack. */ level = g_slice_new (GstEbmlLevel); level->start = 0; level->length = G_MAXUINT64; ebml->level = g_list_prepend (ebml->level, level); /* check ID */ if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) goto finish; if (id != seek_id) { GST_WARNING_OBJECT (demux, "We looked for ID=0x%x but got ID=0x%x (pos=%" G_GUINT64_FORMAT ")", seek_id, id, seek_pos + demux->ebml_segment_start); goto finish; } /* read master + parse */ switch (id) { case GST_MATROSKA_ID_CUES: if (!demux->index_parsed) { ret = gst_matroska_demux_parse_index (demux); } break; case GST_MATROSKA_ID_TAGS: ret = gst_matroska_demux_parse_metadata (demux); break; case GST_MATROSKA_ID_TRACKS: if (!demux->tracks_parsed) { ret = gst_matroska_demux_parse_tracks (demux); } break; case GST_MATROSKA_ID_SEGMENTINFO: if (!demux->segmentinfo_parsed) { ret = gst_matroska_demux_parse_info (demux); } break; case GST_MATROSKA_ID_SEEKHEAD: { GList *l; DEBUG_ELEMENT_START (demux, ebml, "SeekHead"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) goto finish; /* Prevent infinite recursion if there's a cycle from * one seekhead to the same again. Simply break if * we already had this seekhead, finish will clean up * everything. */ for (l = ebml->level; l; l = l->next) { GstEbmlLevel *level = (GstEbmlLevel *) l->data; if (level->start == ebml->offset && l->prev) goto finish; } ret = gst_matroska_demux_parse_contents (demux); break; } case GST_MATROSKA_ID_ATTACHMENTS: if (!demux->attachments_parsed) { ret = gst_matroska_demux_parse_attachments (demux); } break; case GST_MATROSKA_ID_CHAPTERS: ret = gst_matroska_demux_parse_chapters (demux); break; } finish: /* remove dummy level */ while (ebml->level) { guint64 length; level = ebml->level->data; ebml->level = g_list_delete_link (ebml->level, ebml->level); length = level->length; g_slice_free (GstEbmlLevel, level); if (length == G_MAXUINT64) break; } /* seek back */ (void) gst_ebml_read_seek (ebml, before_pos); demux->level_up = level_up; break; } default: GST_DEBUG_OBJECT (demux, "Ignoring Seek entry for ID=0x%x", seek_id); break; } DEBUG_ELEMENT_STOP (demux, ebml, "Seek", ret); return ret; } static GstFlowReturn gst_matroska_demux_parse_contents (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret = GST_FLOW_OK; guint32 id; while (ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) break; if (demux->level_up) { demux->level_up--; break; } switch (id) { case GST_MATROSKA_ID_SEEKENTRY: { ret = gst_matroska_demux_parse_contents_seekentry (demux); /* Ignore EOS and errors here */ if (ret != GST_FLOW_OK) { GST_DEBUG_OBJECT (demux, "Ignoring %s", gst_flow_get_name (ret)); ret = GST_FLOW_OK; } break; } default: GST_WARNING ("Unknown SeekHead subelement 0x%x - ignoring", id); ret = gst_ebml_read_skip (ebml); break; } if (demux->level_up) { demux->level_up--; break; } } DEBUG_ELEMENT_STOP (demux, ebml, "SeekHead", ret); return ret; } /* returns FALSE on error, otherwise TRUE */ static GstFlowReturn gst_matroska_demux_loop_stream_parse_id (GstMatroskaDemux * demux, guint32 id, gboolean * p_run_loop) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret = GST_FLOW_OK; switch (id) { /* stream info * Can exist more than once but following occurences * must have the same content so ignore them */ case GST_MATROSKA_ID_SEGMENTINFO: if (!demux->segmentinfo_parsed) { if ((ret = gst_matroska_demux_parse_info (demux)) != GST_FLOW_OK) return ret; } else { if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) return ret; } break; /* track info headers * Can exist more than once but following occurences * must have the same content so ignore them */ case GST_MATROSKA_ID_TRACKS: { if (!demux->tracks_parsed) { if ((ret = gst_matroska_demux_parse_tracks (demux)) != GST_FLOW_OK) return ret; } else { if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) return ret; } break; } /* cues - seek table * Either exists exactly one time or never but ignore * following occurences for the sake of sanity */ case GST_MATROSKA_ID_CUES: { if (!demux->index_parsed) { if ((ret = gst_matroska_demux_parse_index (demux)) != GST_FLOW_OK) return ret; } else { if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) return ret; } break; } /* metadata * can exist more than one time with different content */ case GST_MATROSKA_ID_TAGS: { if ((ret = gst_matroska_demux_parse_metadata (demux)) != GST_FLOW_OK) return ret; break; } /* file index (if seekable, seek to Cues/Tags/etc to parse it) */ case GST_MATROSKA_ID_SEEKHEAD: { DEBUG_ELEMENT_START (demux, ebml, "SeekHead"); if ((ret = gst_ebml_read_master (ebml, &id)) != GST_FLOW_OK) return ret; if ((ret = gst_matroska_demux_parse_contents (demux)) != GST_FLOW_OK) return ret; break; } /* cluster - contains the payload */ case GST_MATROSKA_ID_CLUSTER: { if (demux->state != GST_MATROSKA_DEMUX_STATE_DATA) { /* We need a Tracks element first before we can output anything. * Search it! */ if (!demux->tracks_parsed) { GstEbmlLevel *level; GstFlowReturn iret = GST_FLOW_OK; guint32 iid; guint level_up; guint64 before_pos; GST_WARNING_OBJECT (demux, "Found Cluster element before Tracks, searching Tracks"); /* remember */ level_up = demux->level_up; before_pos = ebml->offset; /* we don't want to lose our seekhead level, so we add * a dummy. This is a crude hack. */ level = g_slice_new (GstEbmlLevel); level->start = 0; level->length = G_MAXUINT64; ebml->level = g_list_prepend (ebml->level, level); /* Search Tracks element */ while (iret == GST_FLOW_OK) { if ((iret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) break; if ((iret = gst_ebml_peek_id (ebml, &demux->level_up, &iid)) != GST_FLOW_OK) break; if (iid != GST_MATROSKA_ID_TRACKS) continue; iret = gst_matroska_demux_parse_tracks (demux); break; } if (!demux->tracks_parsed) { GST_ERROR_OBJECT (demux, "No Tracks element found"); ret = GST_FLOW_ERROR; } /* remove dummy level */ while (ebml->level) { guint64 length; level = ebml->level->data; ebml->level = g_list_delete_link (ebml->level, ebml->level); length = level->length; g_slice_free (GstEbmlLevel, level); if (length == G_MAXUINT64) break; } /* seek back */ gst_ebml_read_seek (ebml, before_pos); demux->level_up = level_up; } if (ret != GST_FLOW_OK) return ret; demux->state = GST_MATROSKA_DEMUX_STATE_DATA; /* send initial discont */ gst_matroska_demux_send_event (demux, gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, (demux->segment.duration > 0) ? demux->segment.duration : -1, 0)); GST_DEBUG_OBJECT (demux, "signaling no more pads"); gst_element_no_more_pads (GST_ELEMENT (demux)); } else { /* The idea is that we parse one cluster per loop and * then break out of the loop here. In the next call * of the loopfunc, we will get back here with the * next cluster. If an error occurs, we didn't * actually push a buffer, but we still want to break * out of the loop to handle a possible error. We'll * get back here if it's recoverable. */ if ((ret = gst_matroska_demux_parse_cluster (demux)) != GST_FLOW_OK) return ret; *p_run_loop = FALSE; } break; } /* attachments - contains files attached to the mkv container * like album art, etc */ case GST_MATROSKA_ID_ATTACHMENTS:{ if (!demux->attachments_parsed) { if ((ret = gst_matroska_demux_parse_attachments (demux)) != GST_FLOW_OK) return ret; } else { if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) return ret; } break; } /* chapters - contains meta information about how to group * the file into chapters, similar to DVD */ case GST_MATROSKA_ID_CHAPTERS:{ if ((ret = gst_matroska_demux_parse_chapters (demux)) != GST_FLOW_OK) return ret; break; } default: GST_WARNING_OBJECT (demux, "Unknown Segment subelement 0x%x at %" G_GUINT64_FORMAT " - ignoring", id, GST_EBML_READ (demux)->offset); if ((ret = gst_ebml_read_skip (ebml)) != GST_FLOW_OK) return ret; break; } return ret; } static GstFlowReturn gst_matroska_demux_loop_stream (GstMatroskaDemux * demux) { GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret = GST_FLOW_OK; gboolean run_loop = TRUE; guint32 id; /* we've found our segment, start reading the different contents in here */ while (run_loop && ret == GST_FLOW_OK) { if ((ret = gst_ebml_peek_id (ebml, &demux->level_up, &id)) != GST_FLOW_OK) return ret; if (demux->level_up) { demux->level_up--; break; } ret = gst_matroska_demux_loop_stream_parse_id (demux, id, &run_loop); if (demux->level_up) { demux->level_up--; break; } } return ret; } static void gst_matroska_demux_loop (GstPad * pad) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (GST_PAD_PARENT (pad)); GstEbmlRead *ebml = GST_EBML_READ (demux); GstFlowReturn ret; /* first, if we're to start, let's actually get starting */ if (demux->state == GST_MATROSKA_DEMUX_STATE_START) { ret = gst_matroska_demux_init_stream (demux); if (ret != GST_FLOW_OK) { GST_WARNING_OBJECT (demux, "init stream failed!"); goto pause; } demux->state = GST_MATROSKA_DEMUX_STATE_HEADER; } /* If we have to close a segment are send a new segment do * this now */ if (demux->state == GST_MATROSKA_DEMUX_STATE_DATA) { if (demux->close_segment) { gst_matroska_demux_send_event (demux, demux->close_segment); demux->close_segment = NULL; } if (demux->new_segment) { gst_matroska_demux_send_event (demux, demux->new_segment); demux->new_segment = NULL; } } ret = gst_matroska_demux_loop_stream (demux); if (ret != GST_FLOW_OK) goto pause; /* check if we're at the end of a configured segment */ if (GST_CLOCK_TIME_IS_VALID (demux->segment.stop)) { guint i; g_assert (demux->num_streams == demux->src->len); for (i = 0; i < demux->src->len; i++) { GstMatroskaTrackContext *context = g_ptr_array_index (demux->src, i); if (context->pos >= demux->segment.stop) { GST_INFO_OBJECT (demux, "Reached end of segment (%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT ") on pad %s:%s", demux->segment.start, demux->segment.stop, GST_DEBUG_PAD_NAME (context->pad)); ret = GST_FLOW_UNEXPECTED; goto pause; } } } if (ebml->offset == gst_ebml_read_get_length (ebml)) { GST_LOG_OBJECT (demux, "Reached end of stream, sending EOS"); ret = GST_FLOW_UNEXPECTED; goto pause; } return; /* ERRORS */ pause: { const gchar *reason = gst_flow_get_name (ret); GST_LOG_OBJECT (demux, "pausing task, reason %s", reason); demux->segment_running = FALSE; gst_pad_pause_task (demux->sinkpad); if (GST_FLOW_IS_FATAL (ret) || ret == GST_FLOW_NOT_LINKED) { if (ret == GST_FLOW_UNEXPECTED) { /* perform EOS logic */ if (demux->segment.flags & GST_SEEK_FLAG_SEGMENT) { gint64 stop; /* for segment playback we need to post when (in stream time) * we stopped, this is either stop (when set) or the duration. */ if ((stop = demux->segment.stop) == -1) stop = demux->segment.duration; GST_LOG_OBJECT (demux, "Sending segment done, at end of segment"); gst_element_post_message (GST_ELEMENT (demux), gst_message_new_segment_done (GST_OBJECT (demux), GST_FORMAT_TIME, stop)); } else { /* normal playback, send EOS to all linked pads */ GST_LOG_OBJECT (demux, "Sending EOS, at end of stream"); gst_matroska_demux_send_event (demux, gst_event_new_eos ()); } } else { GST_ELEMENT_ERROR (demux, STREAM, FAILED, (NULL), ("stream stopped, reason %s", reason)); gst_matroska_demux_send_event (demux, gst_event_new_eos ()); } } return; } } static gboolean gst_matroska_demux_sink_activate (GstPad * sinkpad) { if (gst_pad_check_pull_range (sinkpad)) return gst_pad_activate_pull (sinkpad, TRUE); return FALSE; } static gboolean gst_matroska_demux_sink_activate_pull (GstPad * sinkpad, gboolean active) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (GST_PAD_PARENT (sinkpad)); if (active) { /* if we have a scheduler we can start the task */ demux->segment_running = TRUE; gst_pad_start_task (sinkpad, (GstTaskFunction) gst_matroska_demux_loop, sinkpad); } else { demux->segment_running = FALSE; gst_pad_stop_task (sinkpad); } return TRUE; } static GstCaps * gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext * videocontext, const gchar * codec_id, gpointer data, guint size, gchar ** codec_name) { GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) videocontext; GstCaps *caps = NULL; g_assert (videocontext != NULL); g_assert (codec_name != NULL); context->send_xiph_headers = FALSE; context->send_flac_headers = FALSE; /* TODO: check if we have all codec types from matroska-ids.h * check if we have to do more special things with codec_private * * Add support for * GST_MATROSKA_CODEC_ID_VIDEO_QUICKTIME * GST_MATROSKA_CODEC_ID_VIDEO_SNOW */ if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_VFW_FOURCC)) { gst_riff_strf_vids *vids = NULL; if (data) { GstBuffer *buf = NULL; vids = (gst_riff_strf_vids *) data; /* assure size is big enough */ if (size < 24) { GST_WARNING ("Too small BITMAPINFOHEADER (%d bytes)", size); return NULL; } if (size < sizeof (gst_riff_strf_vids)) { vids = (gst_riff_strf_vids *) g_realloc (vids, sizeof (gst_riff_strf_vids)); } /* little-endian -> byte-order */ vids->size = GUINT32_FROM_LE (vids->size); vids->width = GUINT32_FROM_LE (vids->width); vids->height = GUINT32_FROM_LE (vids->height); vids->planes = GUINT16_FROM_LE (vids->planes); vids->bit_cnt = GUINT16_FROM_LE (vids->bit_cnt); vids->compression = GUINT32_FROM_LE (vids->compression); vids->image_size = GUINT32_FROM_LE (vids->image_size); vids->xpels_meter = GUINT32_FROM_LE (vids->xpels_meter); vids->ypels_meter = GUINT32_FROM_LE (vids->ypels_meter); vids->num_colors = GUINT32_FROM_LE (vids->num_colors); vids->imp_colors = GUINT32_FROM_LE (vids->imp_colors); if (size > sizeof (gst_riff_strf_vids)) { /* some extra_data */ buf = gst_buffer_new_and_alloc (size - sizeof (gst_riff_strf_vids)); memcpy (GST_BUFFER_DATA (buf), (guint8 *) vids + sizeof (gst_riff_strf_vids), GST_BUFFER_SIZE (buf)); } caps = gst_riff_create_video_caps (vids->compression, NULL, vids, buf, NULL, codec_name); if (buf) gst_buffer_unref (buf); } } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_UNCOMPRESSED)) { guint32 fourcc = 0; switch (videocontext->fourcc) { case GST_MAKE_FOURCC ('I', '4', '2', '0'): *codec_name = g_strdup ("Raw planar YUV 4:2:0"); fourcc = videocontext->fourcc; break; case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'): *codec_name = g_strdup ("Raw packed YUV 4:2:2"); fourcc = videocontext->fourcc; break; case GST_MAKE_FOURCC ('Y', 'V', '1', '2'): *codec_name = g_strdup ("Raw packed YUV 4:2:0"); fourcc = videocontext->fourcc; break; case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'): *codec_name = g_strdup ("Raw packed YUV 4:2:2"); fourcc = videocontext->fourcc; break; case GST_MAKE_FOURCC ('A', 'Y', 'U', 'V'): *codec_name = g_strdup ("Raw packed YUV 4:4:4 with alpha channel"); fourcc = videocontext->fourcc; break; default: GST_DEBUG ("Unknown fourcc %" GST_FOURCC_FORMAT, GST_FOURCC_ARGS (videocontext->fourcc)); return NULL; } caps = gst_caps_new_simple ("video/x-raw-yuv", "format", GST_TYPE_FOURCC, fourcc, NULL); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_SP)) { caps = gst_caps_new_simple ("video/x-divx", "divxversion", G_TYPE_INT, 4, NULL); *codec_name = g_strdup ("MPEG-4 simple profile"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP) || !strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AP)) { #if 0 caps = gst_caps_new_full (gst_structure_new ("video/x-divx", "divxversion", G_TYPE_INT, 5, NULL), gst_structure_new ("video/x-xvid", NULL), gst_structure_new ("video/mpeg", "mpegversion", G_TYPE_INT, 4, "systemstream", G_TYPE_BOOLEAN, FALSE, NULL), NULL); #endif caps = gst_caps_new_simple ("video/mpeg", "mpegversion", G_TYPE_INT, 4, "systemstream", G_TYPE_BOOLEAN, FALSE, NULL); if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_ASP)) *codec_name = g_strdup ("MPEG-4 advanced simple profile"); else *codec_name = g_strdup ("MPEG-4 advanced profile"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MSMPEG4V3)) { #if 0 caps = gst_caps_new_full (gst_structure_new ("video/x-divx", "divxversion", G_TYPE_INT, 3, NULL), gst_structure_new ("video/x-msmpeg", "msmpegversion", G_TYPE_INT, 43, NULL), NULL); #endif caps = gst_caps_new_simple ("video/x-msmpeg", "msmpegversion", G_TYPE_INT, 43, NULL); *codec_name = g_strdup ("Microsoft MPEG-4 v.3"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG1) || !strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG2)) { gint mpegversion = -1; if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG1)) mpegversion = 1; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG2)) mpegversion = 2; else g_assert_not_reached (); caps = gst_caps_new_simple ("video/mpeg", "systemstream", G_TYPE_BOOLEAN, FALSE, "mpegversion", G_TYPE_INT, mpegversion, NULL); *codec_name = g_strdup_printf ("MPEG-%d video", mpegversion); context->postprocess_frame = gst_matroska_demux_add_mpeg_seq_header; } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MJPEG)) { caps = gst_caps_new_simple ("image/jpeg", NULL); *codec_name = g_strdup ("Motion-JPEG"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_MPEG4_AVC)) { caps = gst_caps_new_simple ("video/x-h264", NULL); if (data) { GstBuffer *priv = gst_buffer_new_and_alloc (size); memcpy (GST_BUFFER_DATA (priv), data, size); gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL); gst_buffer_unref (priv); } *codec_name = g_strdup ("H264"); } else if ((!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1)) || (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2)) || (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3)) || (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4))) { gint rmversion = -1; if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO1)) rmversion = 1; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO2)) rmversion = 2; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO3)) rmversion = 3; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_REALVIDEO4)) rmversion = 4; caps = gst_caps_new_simple ("video/x-pn-realvideo", "rmversion", G_TYPE_INT, rmversion, NULL); GST_DEBUG ("data:%p, size:0x%x", data, size); /* We need to extract the extradata ! */ if (data && (size >= 0x22)) { GstBuffer *priv; guint rformat; guint subformat; gst_util_dump_mem (data, size); gst_util_dump_mem (data + 0x1a, size - 0x1a); subformat = GST_READ_UINT32_BE (data + 0x1a); rformat = GST_READ_UINT32_BE (data + 0x1e); priv = gst_buffer_new_and_alloc (size - 0x1a); memcpy (GST_BUFFER_DATA (priv), data + 0x1a, size - 0x1a); gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, "format", G_TYPE_INT, rformat, "subformat", G_TYPE_INT, subformat, NULL); gst_buffer_unref (priv); } *codec_name = g_strdup_printf ("RealVideo %d.0", rmversion); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_THEORA)) { caps = gst_caps_new_simple ("video/x-theora", NULL); context->send_xiph_headers = TRUE; } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_DIRAC)) { caps = gst_caps_new_simple ("video/x-dirac", NULL); context->send_xiph_headers = FALSE; } 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); /* FIXME: use the real unit here! */ GST_DEBUG ("video size %dx%d, target display size %dx%d (any unit)", videocontext->pixel_width, videocontext->pixel_height, videocontext->display_width, videocontext->display_height); /* pixel width and height are the w and h of the video in pixels */ if (videocontext->pixel_width > 0 && videocontext->pixel_height > 0) { gint w = videocontext->pixel_width; gint h = videocontext->pixel_height; gst_structure_set (structure, "width", G_TYPE_INT, w, "height", G_TYPE_INT, h, NULL); } if (videocontext->display_width > 0 && videocontext->display_height > 0) { int n, d; /* calculate the pixel aspect ratio using the display and pixel w/h */ n = videocontext->display_width * videocontext->pixel_height; d = videocontext->display_height * videocontext->pixel_width; GST_DEBUG ("setting PAR to %d/%d", n, d); gst_structure_set (structure, "pixel-aspect-ratio", GST_TYPE_FRACTION, videocontext->display_width * videocontext->pixel_height, videocontext->display_height * videocontext->pixel_width, NULL); } if (videocontext->default_fps > 0.0) { GValue fps_double = { 0, }; GValue fps_fraction = { 0, }; g_value_init (&fps_double, G_TYPE_DOUBLE); g_value_init (&fps_fraction, GST_TYPE_FRACTION); g_value_set_double (&fps_double, videocontext->default_fps); g_value_transform (&fps_double, &fps_fraction); gst_structure_set_value (structure, "framerate", &fps_fraction); g_value_unset (&fps_double); g_value_unset (&fps_fraction); } else if (context->default_duration > 0) { GValue fps_double = { 0, }; GValue fps_fraction = { 0, }; g_value_init (&fps_double, G_TYPE_DOUBLE); g_value_init (&fps_fraction, GST_TYPE_FRACTION); g_value_set_double (&fps_double, (gdouble) GST_SECOND / gst_guint64_to_gdouble (context->default_duration)); g_value_transform (&fps_double, &fps_fraction); gst_structure_set_value (structure, "framerate", &fps_fraction); g_value_unset (&fps_double); g_value_unset (&fps_fraction); } else { /* sort of a hack to get most codecs to support, * even if the default_duration is missing */ gst_structure_set (structure, "framerate", GST_TYPE_FRACTION, 25, 1, NULL); } } gst_caps_do_simplify (caps); } return caps; } /* * Some AAC specific code... *sigh* * FIXME: maybe we should use '15' and code the sample rate explicitly * if the sample rate doesn't match the predefined rates exactly? (tpm) */ static gint aac_rate_idx (gint rate) { if (92017 <= rate) return 0; else if (75132 <= rate) return 1; else if (55426 <= rate) return 2; else if (46009 <= rate) return 3; else if (37566 <= rate) return 4; else if (27713 <= rate) return 5; else if (23004 <= rate) return 6; else if (18783 <= rate) return 7; else if (13856 <= rate) return 8; else if (11502 <= rate) return 9; else if (9391 <= rate) return 10; else return 11; } static gint aac_profile_idx (const gchar * codec_id) { gint profile; if (strlen (codec_id) <= 12) profile = 3; else if (!strncmp (&codec_id[12], "MAIN", 4)) profile = 0; else if (!strncmp (&codec_id[12], "LC", 2)) profile = 1; else if (!strncmp (&codec_id[12], "SSR", 3)) profile = 2; else profile = 3; return profile; } #define AAC_SYNC_EXTENSION_TYPE 0x02b7 static GstCaps * gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext * audiocontext, const gchar * codec_id, gpointer data, guint size, gchar ** codec_name) { GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) audiocontext; GstCaps *caps = NULL; g_assert (audiocontext != NULL); g_assert (codec_name != NULL); context->send_xiph_headers = FALSE; context->send_flac_headers = FALSE; /* TODO: check if we have all codec types from matroska-ids.h * check if we have to do more special things with codec_private * check if we need bitdepth in different places too * implement channel position magic * Add support for: * GST_MATROSKA_CODEC_ID_AUDIO_AC3_BSID9 * GST_MATROSKA_CODEC_ID_AUDIO_AC3_BSID10 * GST_MATROSKA_CODEC_ID_AUDIO_QUICKTIME_QDMC * GST_MATROSKA_CODEC_ID_AUDIO_QUICKTIME_QDM2 */ if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1) || !strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2) || !strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3)) { gint layer = -1; if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L1)) layer = 1; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L2)) layer = 2; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_MPEG1_L3)) layer = 3; else g_assert_not_reached (); caps = gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, 1, "layer", G_TYPE_INT, layer, NULL); *codec_name = g_strdup_printf ("MPEG-1 layer %d", layer); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE) || !strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE)) { gint endianness = -1; if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_BE)) endianness = G_BIG_ENDIAN; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_INT_LE)) endianness = G_LITTLE_ENDIAN; else g_assert_not_reached (); caps = gst_caps_new_simple ("audio/x-raw-int", "width", G_TYPE_INT, audiocontext->bitdepth, "depth", G_TYPE_INT, audiocontext->bitdepth, "signed", G_TYPE_BOOLEAN, audiocontext->bitdepth != 8, "endianness", G_TYPE_INT, endianness, NULL); *codec_name = g_strdup_printf ("Raw %d-bit PCM audio", audiocontext->bitdepth); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_PCM_FLOAT)) { caps = gst_caps_new_simple ("audio/x-raw-float", "endianness", G_TYPE_INT, G_LITTLE_ENDIAN, "width", G_TYPE_INT, audiocontext->bitdepth, NULL); *codec_name = g_strdup_printf ("Raw %d-bit floating-point audio", audiocontext->bitdepth); } else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AC3, strlen (GST_MATROSKA_CODEC_ID_AUDIO_AC3))) { caps = gst_caps_new_simple ("audio/x-ac3", NULL); *codec_name = g_strdup ("AC-3 audio"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_DTS)) { caps = gst_caps_new_simple ("audio/x-dts", NULL); *codec_name = g_strdup ("DTS audio"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS)) { caps = gst_caps_new_simple ("audio/x-vorbis", NULL); context->send_xiph_headers = TRUE; /* vorbis decoder does tags */ } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_FLAC)) { caps = gst_caps_new_simple ("audio/x-flac", NULL); context->send_flac_headers = TRUE; } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_ACM)) { gst_riff_strf_auds *auds = NULL; if (data) { auds = (gst_riff_strf_auds *) data; /* little-endian -> byte-order */ auds->format = GUINT16_FROM_LE (auds->format); auds->channels = GUINT16_FROM_LE (auds->channels); auds->rate = GUINT32_FROM_LE (auds->rate); auds->av_bps = GUINT32_FROM_LE (auds->av_bps); auds->blockalign = GUINT16_FROM_LE (auds->blockalign); auds->size = GUINT16_FROM_LE (auds->size); caps = gst_riff_create_audio_caps (auds->format, NULL, auds, NULL, NULL, codec_name); } } else if (g_str_has_prefix (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC)) { GstBuffer *priv = NULL; gint mpegversion = -1; gint rate_idx, profile; guint8 *data = NULL; /* unspecified AAC profile with opaque private codec data */ if (strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC) == 0) { if (context->codec_priv_size >= 2) { guint obj_type, freq_index, explicit_freq_bytes = 0; codec_id = GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4; freq_index = (GST_READ_UINT16_BE (context->codec_priv) & 0x780) >> 7; obj_type = (GST_READ_UINT16_BE (context->codec_priv) & 0xF800) >> 11; if (freq_index == 15) explicit_freq_bytes = 3; GST_DEBUG ("obj_type = %u, freq_index = %u", obj_type, freq_index); priv = gst_buffer_new_and_alloc (context->codec_priv_size); memcpy (GST_BUFFER_DATA (priv), context->codec_priv, context->codec_priv_size); /* assume SBR if samplerate <= 24kHz */ if (obj_type == 5 || (freq_index >= 6 && freq_index != 15) || (context->codec_priv_size == (5 + explicit_freq_bytes))) { audiocontext->samplerate *= 2; } } else { GST_WARNING ("Opaque A_AAC codec ID, but no codec private data"); /* just try this and see what happens ... */ codec_id = GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4; } } /* make up decoder-specific data if it is not supplied */ if (priv == NULL) { priv = gst_buffer_new_and_alloc (5); data = GST_BUFFER_DATA (priv); rate_idx = aac_rate_idx (audiocontext->samplerate); profile = aac_profile_idx (codec_id); data[0] = ((profile + 1) << 3) | ((rate_idx & 0xE) >> 1); data[1] = ((rate_idx & 0x1) << 7) | (audiocontext->channels << 3); GST_BUFFER_SIZE (priv) = 2; } if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG2, strlen (GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG2))) { mpegversion = 2; } else if (!strncmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4, strlen (GST_MATROSKA_CODEC_ID_AUDIO_AAC_MPEG4))) { mpegversion = 4; if (g_strrstr (codec_id, "SBR")) { /* HE-AAC (aka SBR AAC) */ audiocontext->samplerate *= 2; rate_idx = aac_rate_idx (audiocontext->samplerate); data[2] = AAC_SYNC_EXTENSION_TYPE >> 3; data[3] = ((AAC_SYNC_EXTENSION_TYPE & 0x07) << 5) | 5; data[4] = (1 << 7) | (rate_idx << 3); GST_BUFFER_SIZE (priv) = 5; } } else { g_assert_not_reached (); } caps = gst_caps_new_simple ("audio/mpeg", "mpegversion", G_TYPE_INT, mpegversion, "framed", G_TYPE_BOOLEAN, TRUE, NULL); if (priv) { gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL); } *codec_name = g_strdup_printf ("MPEG-%d AAC audio", mpegversion); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_TTA)) { caps = gst_caps_new_simple ("audio/x-tta", "width", G_TYPE_INT, audiocontext->bitdepth, NULL); *codec_name = g_strdup ("TTA audio"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_WAVPACK4)) { caps = gst_caps_new_simple ("audio/x-wavpack", "width", G_TYPE_INT, audiocontext->bitdepth, "framed", G_TYPE_BOOLEAN, TRUE, NULL); *codec_name = g_strdup ("Wavpack audio"); context->postprocess_frame = gst_matroska_demux_add_wvpk_header; audiocontext->wvpk_block_index = 0; } else if ((!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4)) || (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4)) || (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_COOK))) { gint raversion = -1; if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_14_4)) raversion = 1; else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_COOK)) raversion = 8; else raversion = 2; caps = gst_caps_new_simple ("audio/x-pn-realaudio", "raversion", G_TYPE_INT, raversion, NULL); /* Extract extra information from caps, mapping varies based on codec */ if (data && (size >= 0x50)) { GstBuffer *priv; guint flavor; guint packet_size; guint height; guint leaf_size; guint sample_width; guint extra_data_size; GST_ERROR ("real audio raversion:%d", raversion); gst_util_dump_mem (data, size); if (raversion == 8) { /* COOK */ flavor = GST_READ_UINT16_BE (data + 22); packet_size = GST_READ_UINT32_BE (data + 24); height = GST_READ_UINT16_BE (data + 40); leaf_size = GST_READ_UINT16_BE (data + 44); sample_width = GST_READ_UINT16_BE (data + 58); extra_data_size = GST_READ_UINT32_BE (data + 74); GST_ERROR ("flavor:%d, packet_size:%d, height:%d, leaf_size:%d, sample_width:%d, extra_data_size:%d", flavor, packet_size, height, leaf_size, sample_width, extra_data_size); gst_caps_set_simple (caps, "flavor", G_TYPE_INT, flavor, "packet_size", G_TYPE_INT, packet_size, "height", G_TYPE_INT, height, "leaf_size", G_TYPE_INT, leaf_size, "width", G_TYPE_INT, sample_width, NULL); if ((size - 78) >= extra_data_size) { priv = gst_buffer_new_and_alloc (extra_data_size); memcpy (GST_BUFFER_DATA (priv), data + 78, extra_data_size); gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, priv, NULL); gst_buffer_unref (priv); } } } *codec_name = g_strdup_printf ("RealAudio %d.0", raversion); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_SIPR)) { caps = gst_caps_new_simple ("audio/x-sipro", NULL); *codec_name = g_strdup ("Sipro/ACELP.NET Voice Codec"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_RALF)) { caps = gst_caps_new_simple ("audio/x-ralf-mpeg4-generic", NULL); *codec_name = g_strdup ("Real Audio Lossless"); } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_REAL_ATRC)) { caps = gst_caps_new_simple ("audio/x-vnd.sony.atrac3", NULL); *codec_name = g_strdup ("Sony ATRAC3"); } else { GST_WARNING ("Unknown codec '%s', cannot build Caps", codec_id); return NULL; } if (caps != NULL) { if (audiocontext->samplerate > 0 && audiocontext->channels > 0) { gint i; for (i = 0; i < gst_caps_get_size (caps); i++) { gst_structure_set (gst_caps_get_structure (caps, i), "channels", G_TYPE_INT, audiocontext->channels, "rate", G_TYPE_INT, audiocontext->samplerate, NULL); } } gst_caps_do_simplify (caps); } return caps; } static GstCaps * gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext * subtitlecontext, const gchar * codec_id, gpointer data, guint size) { GstCaps *caps = NULL; GstMatroskaTrackContext *context = (GstMatroskaTrackContext *) subtitlecontext; /* for backwards compatibility */ if (!g_ascii_strcasecmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_ASCII)) codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8; else if (!g_ascii_strcasecmp (codec_id, "S_SSA")) codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_SSA; else if (!g_ascii_strcasecmp (codec_id, "S_ASS")) codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_ASS; else if (!g_ascii_strcasecmp (codec_id, "S_USF")) codec_id = GST_MATROSKA_CODEC_ID_SUBTITLE_USF; /* TODO: Add GST_MATROSKA_CODEC_ID_SUBTITLE_BMP support * Check if we have to do something with codec_private */ if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_UTF8)) { caps = gst_caps_new_simple ("text/plain", NULL); context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer; } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_SSA)) { caps = gst_caps_new_simple ("application/x-ssa", NULL); context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer; } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_ASS)) { caps = gst_caps_new_simple ("application/x-ass", NULL); context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer; } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_USF)) { caps = gst_caps_new_simple ("application/x-usf", NULL); context->postprocess_frame = gst_matroska_demux_check_subtitle_buffer; } else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_VOBSUB)) { caps = gst_caps_new_simple ("video/x-dvd-subpicture", NULL); ((GstMatroskaTrackContext *) subtitlecontext)->send_dvd_event = TRUE; } else { GST_DEBUG ("Unknown subtitle stream: codec_id='%s'", codec_id); caps = gst_caps_new_simple ("application/x-subtitle-unknown", NULL); } if (data != NULL && size > 0) { GstBuffer *buf; buf = gst_buffer_new_and_alloc (size); memcpy (GST_BUFFER_DATA (buf), data, size); gst_caps_set_simple (caps, "codec_data", GST_TYPE_BUFFER, buf, NULL); gst_buffer_unref (buf); } return caps; } static GstStateChangeReturn gst_matroska_demux_change_state (GstElement * element, GstStateChange transition) { GstMatroskaDemux *demux = GST_MATROSKA_DEMUX (element); GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; /* handle upwards state changes here */ switch (transition) { default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); /* handle downwards state changes */ switch (transition) { case GST_STATE_CHANGE_PAUSED_TO_READY: gst_matroska_demux_reset (GST_ELEMENT (demux)); break; default: break; } return ret; } gboolean gst_matroska_demux_plugin_init (GstPlugin * plugin) { gst_riff_init (); /* create an elementfactory for the matroska_demux element */ if (!gst_element_register (plugin, "matroskademux", GST_RANK_PRIMARY, GST_TYPE_MATROSKA_DEMUX)) return FALSE; return TRUE; }