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Code Issues Releases Activity

swscale: introduce isDataInHighBits

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This commit is contained in:
rcombs 2021-12-23 03:19:11 -06:00
parent cb87a3b137
commit e5d83463c8
3 changed files with 32 additions and 0 deletions
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19
libswscale/swscale_internal.h
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@ -892,6 +892,25 @@ static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
}
}
/*
* Identity formats where the data is in the high bits, and the low bits are shifted away.
*/
static av_always_inline int isDataInHighBits(enum AVPixelFormat pix_fmt)
{
int i;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
av_assert0(desc);
if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_HWACCEL))
return 0;
for (i = 0; i < desc->nb_components; i++) {
if (!desc->comp[i].shift)
return 0;
if ((desc->comp[i].shift + desc->comp[i].depth) & 0x7)
return 0;
}
return 1;
}
extern const uint64_t ff_dither4[2];
extern const uint64_t ff_dither8[2];

1
libswscale/tests/pixdesc_query.c
View File

@ -45,6 +45,7 @@ static const struct {
{"PackedRGB", isPackedRGB},
{"PlanarRGB", isPlanarRGB},
{"usePal", usePal},
{"DataInHighBits", isDataInHighBits},
};
static int cmp_str(const void *a, const void *b)

12
tests/ref/fate/sws-pixdesc-query
View File

@ -952,3 +952,15 @@ usePal:
rgb4_byte
rgb8
DataInHighBits:
p010be
p010le
p210be
p210le
p410be
p410le
xyz12be
xyz12le
y210be
y210le