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lavc/vp9dsp: copy 8 pixels at once

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In the 8-bit case, we can actually read/write 8 aligned pixel values per
load/store, which unsurprisingly tends to be faster on 64-bit systems (and
makes no differences on 32-bit systems). This requires ifdef'ing though.
This commit is contained in:
Rémi Denis-Courmont 2024-07-22 21:06:38 +03:00
parent c98127c00e
commit 7aa6510fe1
1 changed files with 32 additions and 0 deletions
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32
libavcodec/vp9dsp_template.c
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@ -49,14 +49,22 @@ static void vert_8x8_c(uint8_t *restrict _dst, ptrdiff_t stride,
{
pixel *dst = (pixel *) _dst;
const pixel *top = (const pixel *) _top;
#if BIT_DEPTH == 8
uint64_t p8 = AV_RN64A(top);
#else
pixel4 p4a = AV_RN4PA(top + 0);
pixel4 p4b = AV_RN4PA(top + 4);
#endif
int y;
stride /= sizeof(pixel);
for (y = 0; y < 8; y++) {
#if BIT_DEPTH == 8
AV_WN64A(dst, p8);
#else
AV_WN4PA(dst + 0, p4a);
AV_WN4PA(dst + 4, p4b);
#endif
dst += stride;
}
}
@ -66,18 +74,28 @@ static void vert_16x16_c(uint8_t *restrict _dst, ptrdiff_t stride,
{
pixel *dst = (pixel *) _dst;
const pixel *top = (const pixel *) _top;
#if BIT_DEPTH == 8
uint64_t p8a = AV_RN64A(top);
uint64_t p8b = AV_RN64A(top + 8);
#else
pixel4 p4a = AV_RN4PA(top + 0);
pixel4 p4b = AV_RN4PA(top + 4);
pixel4 p4c = AV_RN4PA(top + 8);
pixel4 p4d = AV_RN4PA(top + 12);
#endif
int y;
stride /= sizeof(pixel);
for (y = 0; y < 16; y++) {
#if BIT_DEPTH == 8
AV_WN64A(dst + 0, p8a);
AV_WN64A(dst + 8, p8b);
#else
AV_WN4PA(dst + 0, p4a);
AV_WN4PA(dst + 4, p4b);
AV_WN4PA(dst + 8, p4c);
AV_WN4PA(dst + 12, p4d);
#endif
dst += stride;
}
}
@ -87,6 +105,12 @@ static void vert_32x32_c(uint8_t *restrict _dst, ptrdiff_t stride,
{
pixel *dst = (pixel *) _dst;
const pixel *top = (const pixel *) _top;
#if BIT_DEPTH == 8
uint64_t p8a = AV_RN64A(top);
uint64_t p8b = AV_RN64A(top + 8);
uint64_t p8c = AV_RN64A(top + 16);
uint64_t p8d = AV_RN64A(top + 24);
#else
pixel4 p4a = AV_RN4PA(top + 0);
pixel4 p4b = AV_RN4PA(top + 4);
pixel4 p4c = AV_RN4PA(top + 8);
@ -95,10 +119,17 @@ static void vert_32x32_c(uint8_t *restrict _dst, ptrdiff_t stride,
pixel4 p4f = AV_RN4PA(top + 20);
pixel4 p4g = AV_RN4PA(top + 24);
pixel4 p4h = AV_RN4PA(top + 28);
#endif
int y;
stride /= sizeof(pixel);
for (y = 0; y < 32; y++) {
#if BIT_DEPTH == 8
AV_WN64A(dst + 0, p8a);
AV_WN64A(dst + 8, p8b);
AV_WN64A(dst + 16, p8c);
AV_WN64A(dst + 24, p8d);
#else
AV_WN4PA(dst + 0, p4a);
AV_WN4PA(dst + 4, p4b);
AV_WN4PA(dst + 8, p4c);
@ -107,6 +138,7 @@ static void vert_32x32_c(uint8_t *restrict _dst, ptrdiff_t stride,
AV_WN4PA(dst + 20, p4f);
AV_WN4PA(dst + 24, p4g);
AV_WN4PA(dst + 28, p4h);
#endif
dst += stride;
}
}