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qtdemux: Parse codec data for QDM2/QDMC correctly

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First find the wave box then include its whole content instead of just including
everything from a random offset onwards.

Also actually do that for QDMC instead of leaving commented code.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8929>
This commit is contained in:
Sebastian Dröge 2025-05-05 19:20:06 +03:00 committed by GStreamer Marge Bot
parent cd6d2f16a6
commit 98d8bb9a12
1 changed files with 13 additions and 18 deletions
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31
subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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@ -16636,28 +16636,23 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak, guint32 * mvhd_matrix)
stream->stream_tags);
} else {
switch (fourcc) {
#if 0
/* FIXME: what is in the chunk? */
case FOURCC_QDM2:
case FOURCC_QDMC:
{
gint len = QT_UINT32 (stsd_data);
if (wave) {
guint32 len = QT_UINT32 (wave->data);
/* seems to be always = 116 = 0x74 */
break;
}
#endif
case FOURCC_QDM2:
{
gint len = QT_UINT32 (stsd_entry_data);
if (len > 8) {
GstBuffer *buf = gst_buffer_new_and_alloc (len - 8);
if (len > 0x3C) {
GstBuffer *buf = gst_buffer_new_and_alloc (len - 0x3C);
gst_buffer_fill (buf, 0, stsd_entry_data + 0x3C, len - 0x3C);
gst_caps_set_simple (entry->caps,
"codec_data", GST_TYPE_BUFFER, buf, NULL);
gst_buffer_unref (buf);
gst_buffer_fill (buf, 0, (const guint8 *) wave->data + 8,
len - 8);
gst_caps_set_simple (entry->caps, "codec_data", GST_TYPE_BUFFER,
buf, NULL);
gst_buffer_unref (buf);
}
}
gst_caps_set_simple (entry->caps,
"samplesize", G_TYPE_INT, samplesize, NULL);
break;
@ -19141,7 +19136,7 @@ qtdemux_audio_caps (GstQTDemux * qtdemux, QtDemuxStream * stream,
"mpegversion", G_TYPE_INT, 4, "framed", G_TYPE_BOOLEAN, TRUE,
"stream-format", G_TYPE_STRING, "raw", NULL);
break;
case GST_MAKE_FOURCC ('Q', 'D', 'M', 'C'):
case FOURCC_QDMC:
_codec ("QDesign Music");
caps = gst_caps_new_empty_simple ("audio/x-qdm");
break;