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lavu/pixfmt: Introduce VUYX format

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This is the alphaless version of VUYA that I introduced recently. After
further discussion and noting that the Intel vaapi driver explicitly
lists XYUV as a support format for encoding and decoding 8bit 444
content, we decided to switch our usage and avoid the overhead of
having a declared alpha channel around.

Note that I am not removing VUYA, as this turned out to have another
use, which was to replace the need for v408enc/dec when dealing with
the format.

The vaapi switching will happen in the next change
This commit is contained in:
Philip Langdale 2022-08-19 16:50:44 -07:00
parent 61fa1e14e4
commit cc5a5c9860
8 changed files with 24 additions and 3 deletions
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3
doc/APIchanges
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@ -14,6 +14,9 @@ libavutil: 2021-04-27
API changes, most recent first:
2022-08-03 - xxxxxxxxxx - lavu 57.34.100 - pixfmt.h
Add AV_PIX_FMT_VUYX.
2022-08-xx - xxxxxxxxxx - lavf 59 - avformat.h
Deprecate av_stream_get_end_pts() without replacement.

11
libavutil/pixdesc.c
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@ -2504,6 +2504,17 @@ static const AVPixFmtDescriptor av_pix_fmt_descriptors[AV_PIX_FMT_NB] = {
},
.flags = AV_PIX_FMT_FLAG_ALPHA,
},
[AV_PIX_FMT_VUYX] = {
.name = "vuyx",
.nb_components = 3,
.log2_chroma_w = 0,
.log2_chroma_h = 0,
.comp = {
{ 0, 4, 2, 0, 8 }, /* Y */
{ 0, 4, 1, 0, 8 }, /* U */
{ 0, 4, 0, 0, 8 }, /* V */
},
},
[AV_PIX_FMT_RGBAF16BE] = {
.name = "rgbaf16be",
.nb_components = 4,

2
libavutil/pixfmt.h
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@ -372,6 +372,8 @@ enum AVPixelFormat {
AV_PIX_FMT_RGBAF16BE, ///< IEEE-754 half precision packed RGBA 16:16:16:16, 64bpp, RGBARGBA..., big-endian
AV_PIX_FMT_RGBAF16LE, ///< IEEE-754 half precision packed RGBA 16:16:16:16, 64bpp, RGBARGBA..., little-endian
AV_PIX_FMT_VUYX, ///< packed VUYX 4:4:4, 32bpp, Variant of VUYA where alpha channel is left undefined
AV_PIX_FMT_NB ///< number of pixel formats, DO NOT USE THIS if you want to link with shared libav* because the number of formats might differ between versions
};

1
libavutil/tests/pixfmt_best.c
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@ -84,6 +84,7 @@ int main(void)
TEST(AV_PIX_FMT_GBRP, AV_PIX_FMT_RGB24);
TEST(AV_PIX_FMT_0RGB, AV_PIX_FMT_RGB24);
TEST(AV_PIX_FMT_GBRP16, AV_PIX_FMT_RGB48);
TEST(AV_PIX_FMT_VUYX, AV_PIX_FMT_YUV444P);
// Formats additionally containing alpha (here ignored).
TEST(AV_PIX_FMT_YA8, AV_PIX_FMT_GRAY8);

4
libavutil/version.h
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@ -79,8 +79,8 @@
*/
#define LIBAVUTIL_VERSION_MAJOR 57
#define LIBAVUTIL_VERSION_MINOR 33
#define LIBAVUTIL_VERSION_MICRO 101
#define LIBAVUTIL_VERSION_MINOR 34
#define LIBAVUTIL_VERSION_MICRO 100
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \

1
tests/ref/fate/imgutils
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@ -249,3 +249,4 @@ p416le planes: 2, linesizes: 128 256 0 0, plane_sizes: 6144 12288
vuya planes: 1, linesizes: 256 0 0 0, plane_sizes: 12288 0 0 0, plane_offsets: 0 0 0, total_size: 12288
rgbaf16be planes: 1, linesizes: 512 0 0 0, plane_sizes: 24576 0 0 0, plane_offsets: 0 0 0, total_size: 24576
rgbaf16le planes: 1, linesizes: 512 0 0 0, plane_sizes: 24576 0 0 0, plane_offsets: 0 0 0, total_size: 24576
vuyx planes: 1, linesizes: 256 0 0 0, plane_sizes: 12288 0 0 0, plane_offsets: 0 0 0, total_size: 12288

2
tests/ref/fate/pixfmt_best
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@ -1 +1 @@
74 tests passed, 0 tests failed.
75 tests passed, 0 tests failed.

3
tests/ref/fate/sws-pixdesc-query
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@ -219,6 +219,7 @@ isYUV:
uyvy422
uyyvyy411
vuya
vuyx
xyz12be
xyz12le
y210be
@ -753,6 +754,7 @@ Packed:
uyvy422
uyyvyy411
vuya
vuyx
x2bgr10be
x2bgr10le
x2rgb10be
@ -984,5 +986,6 @@ SwappedChroma:
nv21
nv42
vuya
vuyx
yvyu422