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swscale/swscale_internal: Hoist branch out of loop 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-03-28 16:53:53 +01:00
parent c8549d480f
commit ad1cef04a9
1 changed files with 10 additions and 24 deletions
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34
libswscale/swscale_internal.h
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@ -1021,28 +1021,20 @@ int ff_sws_alphablendaway(SwsContext *c, const uint8_t *src[],
static inline void fillPlane16(uint8_t *plane, int stride, int width, int height, int y,
int alpha, int bits, const int big_endian)
{
int i, j;
uint8_t *ptr = plane + stride * y;
int v = alpha ? 0xFFFF>>(16-bits) : (1<<(bits-1));
for (i = 0; i < height; i++) {
#define FILL(wfunc) \
for (j = 0; j < width; j++) {\
wfunc(ptr+2*j, v);\
}
if (big_endian) {
FILL(AV_WB16);
} else {
FILL(AV_WL16);
}
if (big_endian != HAVE_BIGENDIAN)
v = av_bswap16(v);
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++)
AV_WN16(ptr + 2 * j, v);
ptr += stride;
}
#undef FILL
}
static inline void fillPlane32(uint8_t *plane, int stride, int width, int height, int y,
int alpha, int bits, const int big_endian, int is_float)
{
int i, j;
uint8_t *ptr = plane + stride * y;
uint32_t v;
uint32_t onef32 = 0x3f800000;
@ -1050,20 +1042,14 @@ static inline void fillPlane32(uint8_t *plane, int stride, int width, int height
v = alpha ? onef32 : 0;
else
v = alpha ? 0xFFFFFFFF>>(32-bits) : (1<<(bits-1));
if (big_endian != HAVE_BIGENDIAN)
v = av_bswap32(v);
for (i = 0; i < height; i++) {
#define FILL(wfunc) \
for (j = 0; j < width; j++) {\
wfunc(ptr+4*j, v);\
}
if (big_endian) {
FILL(AV_WB32);
} else {
FILL(AV_WL32);
}
for (int i = 0; i < height; i++) {
for (int j = 0; j < width; j++)
AV_WN32(ptr + 4 * j, v);
ptr += stride;
}
#undef FILL
}