mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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matroskademux: put streamheaders on vorbis/speex/flac/theora caps to make remuxing work
https://bugzilla.gnome.org/show_bug.cgi?id=640589
This commit is contained in:
Tim-Philipp Müller
Tim-Philipp Müller
parent
cd9706e9e9
commit
ef0805ea14
3 changed files with 251 additions and 188 deletions
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@ -314,6 +314,9 @@ gst_matroska_track_free (GstMatroskaTrackContext * track)
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if (track->index_table)
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g_array_free (track->index_table, TRUE);
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if (track->stream_headers)
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gst_buffer_list_unref (track->stream_headers);
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g_free (track);
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}
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@ -522,6 +525,31 @@ gst_matroska_decode_buffer (GstMatroskaTrackContext * context, GstBuffer * buf)
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}
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}
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static void
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gst_matroska_demux_add_stream_headers_to_caps (GstMatroskaDemux * demux,
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GstBufferList * list, GstCaps * caps)
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{
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GstStructure *s;
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GValue arr_val = G_VALUE_INIT;
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GValue buf_val = G_VALUE_INIT;
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gint i, num;
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g_assert (gst_caps_is_writable (caps));
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g_value_init (&arr_val, GST_TYPE_ARRAY);
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g_value_init (&buf_val, GST_TYPE_BUFFER);
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num = gst_buffer_list_length (list);
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for (i = 0; i < num; ++i) {
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g_value_set_boxed (&buf_val, gst_buffer_list_get (list, i));
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gst_value_array_append_value (&arr_val, &buf_val);
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}
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s = gst_caps_get_structure (caps, 0);
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gst_structure_take_value (s, "streamheader", &arr_val);
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g_value_unset (&buf_val);
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}
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static GstFlowReturn
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gst_matroska_demux_add_stream (GstMatroskaDemux * demux, GstEbmlRead * ebml)
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{
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@ -1316,6 +1344,9 @@ gst_matroska_demux_add_stream (GstMatroskaDemux * demux, GstEbmlRead * ebml)
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gst_caps_set_simple (caps, "fourcc", G_TYPE_STRING, fstr, NULL);
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g_free (fstr);
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}
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} else if (context->stream_headers != NULL) {
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gst_matroska_demux_add_stream_headers_to_caps (demux,
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context->stream_headers, caps);
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}
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/* the pad in here */
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@ -2553,161 +2584,38 @@ gst_matroska_demux_sync_streams (GstMatroskaDemux * demux)
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}
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static GstFlowReturn
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gst_matroska_demux_push_hdr_buf (GstMatroskaDemux * demux,
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GstMatroskaTrackContext * stream, guint8 * data, guint len)
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gst_matroska_demux_push_stream_headers (GstMatroskaDemux * demux,
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GstMatroskaTrackContext * stream)
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{
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GstFlowReturn ret, cret;
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GstBuffer *header_buf;
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GstFlowReturn ret = GST_FLOW_OK;
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gint i, num;
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header_buf = gst_buffer_new_wrapped (g_memdup (data, len), len);
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num = gst_buffer_list_length (stream->stream_headers);
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for (i = 0; i < num; ++i) {
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GstBuffer *buf;
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if (stream->set_discont) {
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GST_BUFFER_FLAG_SET (header_buf, GST_BUFFER_FLAG_DISCONT);
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stream->set_discont = FALSE;
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buf = gst_buffer_list_get (stream->stream_headers, i);
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buf = gst_buffer_copy (buf);
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_HEADER);
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if (stream->set_discont) {
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
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stream->set_discont = FALSE;
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}
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/* push out all headers in one go and use last flow return */
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ret = gst_pad_push (stream->pad, buf);
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}
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ret = gst_pad_push (stream->pad, header_buf);
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/* don't need these any longer */
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gst_buffer_list_unref (stream->stream_headers);
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stream->stream_headers = NULL;
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/* combine flows */
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cret = gst_matroska_demux_combine_flows (demux, stream, ret);
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ret = gst_matroska_demux_combine_flows (demux, stream, ret);
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return cret;
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}
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static GstFlowReturn
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gst_matroska_demux_push_flac_codec_priv_data (GstMatroskaDemux * demux,
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GstMatroskaTrackContext * stream)
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{
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GstFlowReturn ret;
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guint8 *pdata;
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guint off, len;
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GST_LOG_OBJECT (demux, "priv data size = %" G_GSIZE_FORMAT,
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stream->codec_priv_size);
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pdata = (guint8 *) stream->codec_priv;
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/* need at least 'fLaC' marker + STREAMINFO metadata block */
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if (stream->codec_priv_size < ((4) + (4 + 34))) {
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GST_WARNING_OBJECT (demux, "not enough codec priv data for flac headers");
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return GST_FLOW_ERROR;
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}
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if (memcmp (pdata, "fLaC", 4) != 0) {
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GST_WARNING_OBJECT (demux, "no flac marker at start of stream headers");
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return GST_FLOW_ERROR;
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}
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ret = gst_matroska_demux_push_hdr_buf (demux, stream, pdata, 4);
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if (ret != GST_FLOW_OK)
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return ret;
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off = 4; /* skip fLaC marker */
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while (off < stream->codec_priv_size) {
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len = GST_READ_UINT8 (pdata + off + 1) << 16;
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len |= GST_READ_UINT8 (pdata + off + 2) << 8;
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len |= GST_READ_UINT8 (pdata + off + 3);
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GST_DEBUG_OBJECT (demux, "header packet: len=%u bytes, flags=0x%02x",
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len, (guint) pdata[off]);
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ret = gst_matroska_demux_push_hdr_buf (demux, stream, pdata + off, len + 4);
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if (ret != GST_FLOW_OK)
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return ret;
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off += 4 + len;
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}
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_matroska_demux_push_speex_codec_priv_data (GstMatroskaDemux * demux,
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GstMatroskaTrackContext * stream)
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{
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GstFlowReturn ret;
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guint8 *pdata = stream->codec_priv;
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GST_LOG_OBJECT (demux, "priv data size = %" G_GSIZE_FORMAT,
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stream->codec_priv_size);
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/* need at least 'fLaC' marker + STREAMINFO metadata block */
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if (stream->codec_priv_size < 80) {
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GST_WARNING_OBJECT (demux, "not enough codec priv data for speex headers");
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return GST_FLOW_ERROR;
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}
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if (memcmp (pdata, "Speex ", 8) != 0) {
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GST_WARNING_OBJECT (demux, "no Speex marker at start of stream headers");
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return GST_FLOW_ERROR;
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}
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ret = gst_matroska_demux_push_hdr_buf (demux, stream, pdata, 80);
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if (ret != GST_FLOW_OK)
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return ret;
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if (stream->codec_priv_size == 80)
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return ret;
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else
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return gst_matroska_demux_push_hdr_buf (demux, stream, pdata + 80,
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stream->codec_priv_size - 80);
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}
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static GstFlowReturn
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gst_matroska_demux_push_xiph_codec_priv_data (GstMatroskaDemux * demux,
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GstMatroskaTrackContext * stream)
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{
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GstFlowReturn ret;
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guint8 *p = stream->codec_priv;
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gint i, offset, num_packets;
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guint *length, last;
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if (stream->codec_priv == NULL || stream->codec_priv_size == 0) {
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GST_ELEMENT_ERROR (demux, STREAM, DEMUX, (NULL),
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("Missing codec private data for xiph headers, broken file"));
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return GST_FLOW_ERROR;
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}
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/* start of the stream and vorbis audio or theora video, need to
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* send the codec_priv data as first three packets */
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num_packets = p[0] + 1;
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GST_DEBUG_OBJECT (demux,
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"%u stream headers, total length=%" G_GSIZE_FORMAT " bytes",
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(guint) num_packets, stream->codec_priv_size);
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length = g_alloca (num_packets * sizeof (guint));
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last = 0;
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offset = 1;
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/* first packets, read length values */
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for (i = 0; i < num_packets - 1; i++) {
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length[i] = 0;
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while (offset < stream->codec_priv_size) {
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length[i] += p[offset];
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if (p[offset++] != 0xff)
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break;
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}
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last += length[i];
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}
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if (offset + last > stream->codec_priv_size)
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return GST_FLOW_ERROR;
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/* last packet is the remaining size */
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length[i] = stream->codec_priv_size - offset - last;
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for (i = 0; i < num_packets; i++) {
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GST_DEBUG_OBJECT (demux, "buffer %d: length=%u bytes", i,
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(guint) length[i]);
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if (offset + length[i] > stream->codec_priv_size)
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return GST_FLOW_ERROR;
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ret =
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gst_matroska_demux_push_hdr_buf (demux, stream, p + offset, length[i]);
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if (ret != GST_FLOW_OK)
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return ret;
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offset += length[i];
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}
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return GST_FLOW_OK;
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return ret;
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}
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static void
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@ -3330,19 +3238,15 @@ gst_matroska_demux_parse_blockgroup_or_simpleblock (GstMatroskaDemux * demux,
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break;
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}
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if (stream->send_xiph_headers) {
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ret = gst_matroska_demux_push_xiph_codec_priv_data (demux, stream);
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stream->send_xiph_headers = FALSE;
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}
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if (stream->send_flac_headers) {
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ret = gst_matroska_demux_push_flac_codec_priv_data (demux, stream);
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stream->send_flac_headers = FALSE;
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}
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if (stream->send_speex_headers) {
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ret = gst_matroska_demux_push_speex_codec_priv_data (demux, stream);
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stream->send_speex_headers = FALSE;
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if (stream->send_stream_headers) {
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if (stream->stream_headers != NULL) {
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ret = gst_matroska_demux_push_stream_headers (demux, stream);
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} else {
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/* FIXME: perhaps we can just disable and skip this stream then */
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GST_ELEMENT_ERROR (demux, STREAM, DECODE, (NULL),
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("Failed to extract stream headers from codec private data"));
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}
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stream->send_stream_headers = FALSE;
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}
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if (stream->send_dvd_event) {
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@ -4931,10 +4835,6 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
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g_assert (videocontext != NULL);
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g_assert (codec_name != NULL);
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context->send_xiph_headers = FALSE;
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context->send_flac_headers = FALSE;
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context->send_speex_headers = FALSE;
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if (riff_fourcc)
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*riff_fourcc = 0;
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@ -5143,7 +5043,11 @@ gst_matroska_demux_video_caps (GstMatroskaTrackVideoContext *
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*codec_name = g_strdup_printf ("RealVideo %d.0", rmversion);
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} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_THEORA)) {
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caps = gst_caps_new_empty_simple ("video/x-theora");
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context->send_xiph_headers = TRUE;
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context->stream_headers =
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gst_matroska_parse_xiph_stream_headers (context->codec_priv,
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context->codec_priv_size);
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/* FIXME: mark stream as broken and skip if there are no stream headers */
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context->send_stream_headers = TRUE;
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} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_VIDEO_DIRAC)) {
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caps = gst_caps_new_empty_simple ("video/x-dirac");
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*codec_name = g_strdup_printf ("Dirac");
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@ -5307,10 +5211,6 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
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if (riff_audio_fmt)
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*riff_audio_fmt = 0;
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context->send_xiph_headers = FALSE;
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context->send_flac_headers = FALSE;
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context->send_speex_headers = FALSE;
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/* TODO: check if we have all codec types from matroska-ids.h
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* check if we have to do more special things with codec_private
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* check if we need bitdepth in different places too
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@ -5388,14 +5288,25 @@ gst_matroska_demux_audio_caps (GstMatroskaTrackAudioContext *
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*codec_name = g_strdup ("DTS audio");
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} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_VORBIS)) {
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caps = gst_caps_new_empty_simple ("audio/x-vorbis");
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context->send_xiph_headers = TRUE;
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/* vorbis decoder does tags */
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context->stream_headers =
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gst_matroska_parse_xiph_stream_headers (context->codec_priv,
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context->codec_priv_size);
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/* FIXME: mark stream as broken and skip if there are no stream headers */
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context->send_stream_headers = TRUE;
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} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_FLAC)) {
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caps = gst_caps_new_empty_simple ("audio/x-flac");
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context->send_flac_headers = TRUE;
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context->stream_headers =
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gst_matroska_parse_flac_stream_headers (context->codec_priv,
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context->codec_priv_size);
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/* FIXME: mark stream as broken and skip if there are no stream headers */
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context->send_stream_headers = TRUE;
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} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_SPEEX)) {
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caps = gst_caps_new_empty_simple ("audio/x-speex");
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context->send_speex_headers = TRUE;
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context->stream_headers =
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gst_matroska_parse_speex_stream_headers (context->codec_priv,
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context->codec_priv_size);
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/* FIXME: mark stream as broken and skip if there are no stream headers */
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context->send_stream_headers = TRUE;
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} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_AUDIO_ACM)) {
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gst_riff_strf_auds auds;
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@ -5652,7 +5563,11 @@ gst_matroska_demux_subtitle_caps (GstMatroskaTrackSubtitleContext *
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caps = gst_caps_new_empty_simple ("subpicture/x-pgs");
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} else if (!strcmp (codec_id, GST_MATROSKA_CODEC_ID_SUBTITLE_KATE)) {
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caps = gst_caps_new_empty_simple ("subtitle/x-kate");
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context->send_xiph_headers = TRUE;
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context->stream_headers =
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gst_matroska_parse_xiph_stream_headers (context->codec_priv,
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context->codec_priv_size);
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/* FIXME: mark stream as broken and skip if there are no stream headers */
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context->send_stream_headers = TRUE;
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} else {
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GST_DEBUG ("Unknown subtitle stream: codec_id='%s'", codec_id);
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caps = gst_caps_new_empty_simple ("application/x-subtitle-unknown");
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@ -26,6 +26,8 @@
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#include "matroska-ids.h"
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#include <string.h>
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gboolean
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gst_matroska_track_init_video_context (GstMatroskaTrackContext ** p_context)
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{
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@ -116,3 +118,151 @@ gst_matroska_register_tags (void)
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{
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/* TODO: register other custom tags */
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}
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GstBufferList *
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gst_matroska_parse_xiph_stream_headers (gpointer codec_data,
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gsize codec_data_size)
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{
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GstBufferList *list = NULL;
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guint8 *p = codec_data;
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gint i, offset, num_packets;
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guint *length, last;
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GST_MEMDUMP ("xiph codec data", codec_data, codec_data_size);
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if (codec_data == NULL || codec_data_size == 0)
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goto error;
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/* start of the stream and vorbis audio or theora video, need to
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* send the codec_priv data as first three packets */
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num_packets = p[0] + 1;
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GST_DEBUG ("%u stream headers, total length=%" G_GSIZE_FORMAT " bytes",
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(guint) num_packets, codec_data_size);
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length = g_alloca (num_packets * sizeof (guint));
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last = 0;
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offset = 1;
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/* first packets, read length values */
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for (i = 0; i < num_packets - 1; i++) {
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length[i] = 0;
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while (offset < codec_data_size) {
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length[i] += p[offset];
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if (p[offset++] != 0xff)
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break;
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}
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last += length[i];
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}
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if (offset + last > codec_data_size)
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goto error;
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/* last packet is the remaining size */
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length[i] = codec_data_size - offset - last;
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list = gst_buffer_list_new ();
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for (i = 0; i < num_packets; i++) {
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GstBuffer *hdr;
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GST_DEBUG ("buffer %d: %u bytes", i, (guint) length[i]);
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if (offset + length[i] > codec_data_size)
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goto error;
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hdr = gst_buffer_new_wrapped (g_memdup (p + offset, length[i]), length[i]);
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gst_buffer_list_add (list, hdr);
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offset += length[i];
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}
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||||
|
||||
return list;
|
||||
|
||||
/* ERRORS */
|
||||
error:
|
||||
{
|
||||
if (list != NULL)
|
||||
gst_buffer_list_unref (list);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
GstBufferList *
|
||||
gst_matroska_parse_speex_stream_headers (gpointer codec_data,
|
||||
gsize codec_data_size)
|
||||
{
|
||||
GstBufferList *list = NULL;
|
||||
GstBuffer *hdr;
|
||||
guint8 *pdata = codec_data;
|
||||
|
||||
GST_MEMDUMP ("speex codec data", codec_data, codec_data_size);
|
||||
|
||||
if (codec_data == NULL || codec_data_size < 80) {
|
||||
GST_WARNING ("not enough codec priv data for speex headers");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (memcmp (pdata, "Speex ", 8) != 0) {
|
||||
GST_WARNING ("no Speex marker at start of stream headers");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
list = gst_buffer_list_new ();
|
||||
|
||||
hdr = gst_buffer_new_wrapped (g_memdup (pdata, 80), 80);
|
||||
gst_buffer_list_add (list, hdr);
|
||||
|
||||
if (codec_data_size > 80) {
|
||||
hdr = gst_buffer_new_wrapped (g_memdup (pdata + 80, codec_data_size - 80),
|
||||
codec_data_size - 80);
|
||||
gst_buffer_list_add (list, hdr);
|
||||
}
|
||||
|
||||
return list;
|
||||
}
|
||||
|
||||
GstBufferList *
|
||||
gst_matroska_parse_flac_stream_headers (gpointer codec_data,
|
||||
gsize codec_data_size)
|
||||
{
|
||||
GstBufferList *list = NULL;
|
||||
GstBuffer *hdr;
|
||||
guint8 *pdata = codec_data;
|
||||
guint len, off;
|
||||
|
||||
GST_MEMDUMP ("flac codec data", codec_data, codec_data_size);
|
||||
|
||||
/* need at least 'fLaC' marker + STREAMINFO metadata block */
|
||||
if (codec_data == NULL || codec_data_size < ((4) + (4 + 34))) {
|
||||
GST_WARNING ("not enough codec priv data for flac headers");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (memcmp (pdata, "fLaC", 4) != 0) {
|
||||
GST_WARNING ("no flac marker at start of stream headers");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
list = gst_buffer_list_new ();
|
||||
|
||||
hdr = gst_buffer_new_wrapped (g_memdup (pdata, 4), 4);
|
||||
gst_buffer_list_add (list, hdr);
|
||||
|
||||
/* skip fLaC marker */
|
||||
off = 4;
|
||||
|
||||
/* FIXME: check size remaining */
|
||||
while (off < codec_data_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 ("header packet: len=%u bytes, flags=0x%02x", len, pdata[off]);
|
||||
|
||||
/* FIXME: check size remaining */
|
||||
hdr = gst_buffer_new_wrapped (g_memdup (pdata + off, len + 4), len + 4);
|
||||
gst_buffer_list_add (list, hdr);
|
||||
|
||||
off += 4 + len;
|
||||
}
|
||||
return list;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -518,20 +518,9 @@ struct _GstMatroskaTrackContext {
|
|||
|
||||
gboolean set_discont; /* TRUE = set DISCONT flag on next buffer */
|
||||
|
||||
/* Special flag for Vorbis and Theora, for which we need to send
|
||||
* codec_priv first before sending any data, and just testing
|
||||
* for time == 0 is not enough to detect that. Used by demuxer */
|
||||
gboolean send_xiph_headers;
|
||||
|
||||
/* Special flag for Flac, for which we need to reconstruct the header
|
||||
* buffer from the codec_priv data before sending any data, and just
|
||||
* testing for time == 0 is not enough to detect that. Used by demuxer */
|
||||
gboolean send_flac_headers;
|
||||
|
||||
/* Special flag for Speex, for which we need to reconstruct the header
|
||||
* buffer from the codec_priv data before sending any data, and just
|
||||
* testing for time == 0 is not enough to detect that. Used by demuxer */
|
||||
gboolean send_speex_headers;
|
||||
/* Stream header buffer, to put into caps and send before any other buffers */
|
||||
GstBufferList * stream_headers;
|
||||
gboolean send_stream_headers;
|
||||
|
||||
/* Special flag for VobSub, for which we have to send colour table info
|
||||
* (if available) first before sending any data, and just testing
|
||||
|
|
@ -642,4 +631,13 @@ gboolean gst_matroska_track_init_subtitle_context (GstMatroskaTrackContext ** p_
|
|||
|
||||
void gst_matroska_register_tags (void);
|
||||
|
||||
GstBufferList * gst_matroska_parse_xiph_stream_headers (gpointer codec_data,
|
||||
gsize codec_data_size);
|
||||
|
||||
GstBufferList * gst_matroska_parse_speex_stream_headers (gpointer codec_data,
|
||||
gsize codec_data_size);
|
||||
|
||||
GstBufferList * gst_matroska_parse_flac_stream_headers (gpointer codec_data,
|
||||
gsize codec_data_size);
|
||||
|
||||
#endif /* __GST_MATROSKA_IDS_H__ */
|
||||
|
|
|
|||
Loading…
Reference in a new issue