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qtdemux: look up uncompressed component type

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This fix handles the case where the order of components in the cmpd box
does not correspond to the order used for a specific track. That
is the case where the uncC component_index values are something
other than 0, 1, 2, 3.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8483>
This commit is contained in:
Brad Hards 2025-02-15 14:07:52 +11:00 committed by GStreamer Marge Bot
parent 3dc6abbe68
commit ec679507f6
1 changed files with 30 additions and 16 deletions
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46
subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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@ -12131,12 +12131,20 @@ qtdemux_get_format_from_uncv (GstQTDemux * qtdemux,
UncompressedFrameConfigBox * uncC, ComponentDefinitionBox * cmpd)
{
guint32 num_components = uncC->component_count;
guint16 component_types[4];
GstVideoFormat format = GST_VIDEO_FORMAT_UNKNOWN;
stream->alignment = 4;
if (num_components > 4) {
GST_WARNING_OBJECT (qtdemux,
"Unsupported number of components for uncC: %u", num_components);
goto unsupported_feature;
}
if (uncC->version == 1) {
// Determine format with profile
// The only supported options for version 1 are `rgb3`, `rgba`, and `abgr`
// The only permitted profiles for version 1 are `rgb3`, `rgba`, and `abgr`
switch (uncC->profile) {
case GST_MAKE_FOURCC ('r', 'g', 'b', '3'): // RGB 24 bits packed
format = GST_VIDEO_FORMAT_RGB;
@ -12251,37 +12259,43 @@ qtdemux_get_format_from_uncv (GstQTDemux * qtdemux,
goto unsupported_feature;
}
for (guint32 i = 0; i < num_components; i++) {
guint16 component_index = uncC->components[i].index;
component_types[i] = cmpd->types[component_index];
}
/* Determine Format */
switch (num_components) {
case 1:
if (cmpd->types[0] == COMPONENT_MONOCHROME) {
if (component_types[0] == COMPONENT_MONOCHROME) {
// Single channel, we can handle this in any interleave
format = GST_VIDEO_FORMAT_GRAY8;
}
break;
case 3:
if (cmpd->types[0] == COMPONENT_RED &&
cmpd->types[1] == COMPONENT_GREEN &&
cmpd->types[2] == COMPONENT_BLUE && uncC->interleave_type == 1) {
if (component_types[0] == COMPONENT_RED &&
component_types[1] == COMPONENT_GREEN &&
component_types[2] == COMPONENT_BLUE && uncC->interleave_type == 1) {
format = GST_VIDEO_FORMAT_RGB;
}
if (cmpd->types[0] == COMPONENT_BLUE &&
cmpd->types[1] == COMPONENT_GREEN &&
cmpd->types[2] == COMPONENT_RED && uncC->interleave_type == 1) {
if (component_types[0] == COMPONENT_BLUE &&
component_types[1] == COMPONENT_GREEN &&
component_types[2] == COMPONENT_RED && uncC->interleave_type == 1) {
format = GST_VIDEO_FORMAT_BGR;
}
break;
case 4:
if (cmpd->types[0] == COMPONENT_RED &&
cmpd->types[1] == COMPONENT_GREEN &&
cmpd->types[2] == COMPONENT_BLUE &&
cmpd->types[3] == COMPONENT_ALPHA && uncC->interleave_type == 1) {
if (component_types[0] == COMPONENT_RED &&
component_types[1] == COMPONENT_GREEN &&
component_types[2] == COMPONENT_BLUE &&
component_types[3] == COMPONENT_ALPHA && uncC->interleave_type == 1) {
format = GST_VIDEO_FORMAT_RGBA;
}
if (cmpd->types[0] == COMPONENT_RED &&
cmpd->types[1] == COMPONENT_GREEN &&
cmpd->types[2] == COMPONENT_BLUE &&
cmpd->types[3] == COMPONENT_PADDING && uncC->interleave_type == 1) {
if (component_types[0] == COMPONENT_RED &&
component_types[1] == COMPONENT_GREEN &&
component_types[2] == COMPONENT_BLUE &&
component_types[3] == COMPONENT_PADDING
&& uncC->interleave_type == 1) {
format = GST_VIDEO_FORMAT_RGBx;
}
break;