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qtdemux: component to format lookup table

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8578>
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dukesook 2025-03-04 10:14:23 -07:00 committed by GStreamer Marge Bot
parent af148bb746
commit ee9c8724c3
1 changed files with 47 additions and 47 deletions
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94
subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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@ -11942,7 +11942,7 @@ qtdemux_parse_stereo_svmi_atom (GstQTDemux * qtdemux, QtDemuxStream * stream,
typedef enum
{
// ISO/IEC 23001-17 Table 1 - Component Types
COMPONENT_MONOCHROME = 0,
COMPONENT_MONOCHROME = 0, // Gray
COMPONENT_LUMA_Y = 1, // Y
COMPONENT_CHROMA_U = 2, // Cb or U
COMPONENT_CHROMA_V = 3, // Cr or V
@ -11950,15 +11950,17 @@ typedef enum
COMPONENT_GREEN = 5, // G
COMPONENT_BLUE = 6, // B
COMPONENT_ALPHA = 7, // A
COMPONENT_DEPTH = 8,
COMPONENT_DISPARITY = 9,
COMPONENT_DEPTH = 8, //
COMPONENT_DISPARITY = 9, //
COMPONENT_PALETTE = 10, // The component_format value for this component shall be 0.
COMPONENT_FILTER_ARRAY = 11, // Bayer, RGBW, etc.
COMPONENT_PADDING = 12, // unused bit/bytes
COMPONENT_CYAN = 13,
COMPONENT_MAGENTA = 14,
COMPONENT_YELLOW = 15,
COMPONENT_CYAN = 13, //
COMPONENT_MAGENTA = 14, //
COMPONENT_YELLOW = 15, //
COMPONENT_KEY = 16, // Black
// Values 17 to 0x7FFF are reserved
// Values 0x8000 to 0xFFFF are user-defined
} ComponentType;
typedef struct ComponentDefinitionBox
@ -12135,6 +12137,28 @@ error:
return FALSE;
}
typedef struct ComponentFormatMapping
{
GstVideoFormat format;
guint num_components;
guint16 component_types[4];
} ComponentFormatMapping;
static const ComponentFormatMapping component_lookup[] = {
{GST_VIDEO_FORMAT_GRAY8, 1, {COMPONENT_MONOCHROME}},
{GST_VIDEO_FORMAT_RGB, 3, {COMPONENT_RED, COMPONENT_GREEN, COMPONENT_BLUE}},
{GST_VIDEO_FORMAT_BGR, 3, {COMPONENT_BLUE, COMPONENT_GREEN, COMPONENT_RED}},
{GST_VIDEO_FORMAT_ARGB, 4,
{COMPONENT_ALPHA, COMPONENT_RED, COMPONENT_GREEN, COMPONENT_BLUE}},
{GST_VIDEO_FORMAT_BGRA, 4,
{COMPONENT_BLUE, COMPONENT_GREEN, COMPONENT_RED, COMPONENT_ALPHA}},
{GST_VIDEO_FORMAT_RGBA, 4,
{COMPONENT_RED, COMPONENT_GREEN, COMPONENT_BLUE, COMPONENT_ALPHA}},
{GST_VIDEO_FORMAT_RGBx, 4,
{COMPONENT_RED, COMPONENT_GREEN, COMPONENT_BLUE, COMPONENT_PADDING}},
};
static GstVideoFormat
qtdemux_get_format_from_uncv (GstQTDemux * qtdemux,
QtDemuxStreamStsdEntry * entry, QtDemuxStream * stream,
@ -12274,46 +12298,24 @@ qtdemux_get_format_from_uncv (GstQTDemux * qtdemux,
component_types[i] = cmpd->types[component_index];
}
/* Determine Format */
switch (num_components) {
case 1:
if (component_types[0] == COMPONENT_MONOCHROME) {
// Single channel, we can handle this in any interleave
format = GST_VIDEO_FORMAT_GRAY8;
}
// Lookup Format
for (guint i = 0; i < G_N_ELEMENTS (component_lookup); i++) {
if (num_components != component_lookup[i].num_components) {
continue;
} else if (!memcmp (component_types, component_lookup[i].component_types,
num_components * sizeof (guint16))) {
format = component_lookup[i].format;
break;
case 3:
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 (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 (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 (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;
default:
GST_WARNING_OBJECT (qtdemux,
"Unsupported number of components for uncompressed track: %u",
num_components);
goto unsupported_feature;
}
}
// TODO: Handle various interleave types for multiple components
if (num_components != 1 && uncC->interleave_type != 1) {
// Single channels can by any interleave_type
GST_WARNING_OBJECT (qtdemux,
"Unsupported interleave_type for uncompressed track: %u",
uncC->interleave_type);
goto unsupported_feature;
}
/* Calculate Stride */
@ -12324,8 +12326,6 @@ qtdemux_get_format_from_uncv (GstQTDemux * qtdemux,
goto unsupported_feature; // TODO - account for higher bit depths
} else if (uncC->sampling_type != 0) {
goto unsupported_feature; // TODO - account for subsampling
} else if (uncC->interleave_type != 0 && uncC->interleave_type != 1) {
goto unsupported_feature; // TODO - account for various interleave types
}
stream->stride = entry->width * num_components; // TODO - account for non-zero row alignment