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https://github.com/FFmpeg/FFmpeg.git
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ea043cc53e
x64 always has MMX, MMXEXT, SSE and SSE2 and this means that some functions for MMX, MMXEXT, SSE and 3dnow are always overridden by other functions (unless one e.g. explicitly disables SSE2). So given that the only systems which benefit from the 8x8 MMX (overridden by MMXEXT) or the 16x16 MMXEXT (overridden by SSE2) are truely ancient 32bit x86s they are removed. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
86 lines
3.9 KiB
C
86 lines
3.9 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "pixelutils.h"
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#include "cpu.h"
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int ff_pixelutils_sad_8x8_mmxext(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_a_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_u_16x16_sse2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_a_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_u_32x32_sse2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_a_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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int ff_pixelutils_sad_u_32x32_avx2(const uint8_t *src1, ptrdiff_t stride1,
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const uint8_t *src2, ptrdiff_t stride2);
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void ff_pixelutils_sad_init_x86(av_pixelutils_sad_fn *sad, int aligned)
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{
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int cpu_flags = av_get_cpu_flags();
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// The best way to use SSE2 would be to do 2 SADs in parallel,
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// but we'd have to modify the pixelutils API to return SIMD functions.
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// It's probably not faster to shuffle data around
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// to get two lines of 8 pixels into a single 16byte register,
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// so just use the MMX 8x8 version even when SSE2 is available.
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if (EXTERNAL_MMXEXT(cpu_flags)) {
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sad[2] = ff_pixelutils_sad_8x8_mmxext;
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}
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if (EXTERNAL_SSE2(cpu_flags)) {
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switch (aligned) {
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case 0: sad[3] = ff_pixelutils_sad_16x16_sse2; break; // src1 unaligned, src2 unaligned
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case 1: sad[3] = ff_pixelutils_sad_u_16x16_sse2; break; // src1 aligned, src2 unaligned
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case 2: sad[3] = ff_pixelutils_sad_a_16x16_sse2; break; // src1 aligned, src2 aligned
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}
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}
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if (EXTERNAL_SSE2(cpu_flags)) {
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switch (aligned) {
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case 0: sad[4] = ff_pixelutils_sad_32x32_sse2; break; // src1 unaligned, src2 unaligned
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case 1: sad[4] = ff_pixelutils_sad_u_32x32_sse2; break; // src1 aligned, src2 unaligned
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case 2: sad[4] = ff_pixelutils_sad_a_32x32_sse2; break; // src1 aligned, src2 aligned
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}
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}
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if (EXTERNAL_AVX2_FAST(cpu_flags)) {
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switch (aligned) {
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case 0: sad[4] = ff_pixelutils_sad_32x32_avx2; break; // src1 unaligned, src2 unaligned
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case 1: sad[4] = ff_pixelutils_sad_u_32x32_avx2; break; // src1 aligned, src2 unaligned
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case 2: sad[4] = ff_pixelutils_sad_a_32x32_avx2; break; // src1 aligned, src2 aligned
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}
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}
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}
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