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qtdemux: Don't parse fiel box a second time for JPEG-2000

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It was already parsed above in general for all video codecs. Just put the number
of fields into the JPEG-2000 in the specific field.

As a side effect this also actually checks if enough data is available.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8929>
This commit is contained in:
Sebastian Dröge 2025-05-05 22:24:33 +03:00 committed by GStreamer Marge Bot
parent 45443603f8
commit 137044195d
1 changed files with 7 additions and 9 deletions
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16
subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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@ -15177,7 +15177,7 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak, guint32 * mvhd_matrix)
case FOURCC_mjp2:
{
/* see annex I of the jpeg2000 spec */
GNode *jp2h, *ihdr, *colr, *mjp2, *field, *prefix, *cmap, *cdef;
GNode *jp2h, *ihdr, *colr, *mjp2, *prefix, *cmap, *cdef;
const guint8 *data;
const gchar *colorspace = NULL;
gint ncomp = 0;
@ -15332,17 +15332,15 @@ qtdemux_parse_trak (GstQTDemux * qtdemux, GNode * trak, guint32 * mvhd_matrix)
g_free (chan_def);
}
/* indicate possible fields in caps */
if (CUR_STREAM (stream)->interlace_mode != 1) {
gst_caps_set_simple (entry->caps, "fields", G_TYPE_INT,
CUR_STREAM (stream)->interlace_mode, NULL);
}
/* some optional atoms */
field = qtdemux_tree_get_child_by_type (mjp2, FOURCC_fiel);
prefix = qtdemux_tree_get_child_by_type (mjp2, FOURCC_jp2x);
/* indicate possible fields in caps */
if (field) {
data = (guint8 *) field->data + 8;
if (*data != 1)
gst_caps_set_simple (entry->caps, "fields", G_TYPE_INT,
(gint) * data, NULL);
}
/* add codec_data if provided */
if (prefix) {
GstBuffer *buf;