mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
112 lines
3.8 KiB
C
112 lines
3.8 KiB
C
/*
|
|
* SIMD-optimized lossless video encoding functions
|
|
* Copyright (c) 2000, 2001 Fabrice Bellard
|
|
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/x86/asm.h"
|
|
#include "libavutil/x86/cpu.h"
|
|
#include "libavcodec/lossless_videoencdsp.h"
|
|
#include "libavcodec/mathops.h"
|
|
|
|
void ff_diff_bytes_mmx(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
|
|
intptr_t w);
|
|
void ff_diff_bytes_sse2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
|
|
intptr_t w);
|
|
void ff_diff_bytes_avx2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
|
|
intptr_t w);
|
|
|
|
void ff_sub_left_predict_avx(uint8_t *dst, uint8_t *src,
|
|
ptrdiff_t stride, ptrdiff_t width, int height);
|
|
|
|
#if HAVE_INLINE_ASM
|
|
|
|
static void sub_median_pred_mmxext(uint8_t *dst, const uint8_t *src1,
|
|
const uint8_t *src2, intptr_t w,
|
|
int *left, int *left_top)
|
|
{
|
|
x86_reg i = 0;
|
|
uint8_t l, lt;
|
|
|
|
__asm__ volatile (
|
|
"movq (%1, %0), %%mm0 \n\t" // LT
|
|
"psllq $8, %%mm0 \n\t"
|
|
"1: \n\t"
|
|
"movq (%1, %0), %%mm1 \n\t" // T
|
|
"movq -1(%2, %0), %%mm2 \n\t" // L
|
|
"movq (%2, %0), %%mm3 \n\t" // X
|
|
"movq %%mm2, %%mm4 \n\t" // L
|
|
"psubb %%mm0, %%mm2 \n\t"
|
|
"paddb %%mm1, %%mm2 \n\t" // L + T - LT
|
|
"movq %%mm4, %%mm5 \n\t" // L
|
|
"pmaxub %%mm1, %%mm4 \n\t" // max(T, L)
|
|
"pminub %%mm5, %%mm1 \n\t" // min(T, L)
|
|
"pminub %%mm2, %%mm4 \n\t"
|
|
"pmaxub %%mm1, %%mm4 \n\t"
|
|
"psubb %%mm4, %%mm3 \n\t" // dst - pred
|
|
"movq %%mm3, (%3, %0) \n\t"
|
|
"add $8, %0 \n\t"
|
|
"movq -1(%1, %0), %%mm0 \n\t" // LT
|
|
"cmp %4, %0 \n\t"
|
|
" jb 1b \n\t"
|
|
: "+r" (i)
|
|
: "r" (src1), "r" (src2), "r" (dst), "r" ((x86_reg) w));
|
|
|
|
l = *left;
|
|
lt = *left_top;
|
|
|
|
dst[0] = src2[0] - mid_pred(l, src1[0], (l + src1[0] - lt) & 0xFF);
|
|
|
|
*left_top = src1[w - 1];
|
|
*left = src2[w - 1];
|
|
}
|
|
|
|
#endif /* HAVE_INLINE_ASM */
|
|
|
|
av_cold void ff_llvidencdsp_init_x86(LLVidEncDSPContext *c)
|
|
{
|
|
av_unused int cpu_flags = av_get_cpu_flags();
|
|
|
|
if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
|
|
c->diff_bytes = ff_diff_bytes_mmx;
|
|
}
|
|
|
|
#if HAVE_INLINE_ASM
|
|
if (INLINE_MMXEXT(cpu_flags)) {
|
|
c->sub_median_pred = sub_median_pred_mmxext;
|
|
}
|
|
#endif /* HAVE_INLINE_ASM */
|
|
|
|
if (EXTERNAL_SSE2(cpu_flags)) {
|
|
c->diff_bytes = ff_diff_bytes_sse2;
|
|
}
|
|
|
|
if (EXTERNAL_AVX(cpu_flags)) {
|
|
c->sub_left_predict = ff_sub_left_predict_avx;
|
|
}
|
|
|
|
if (EXTERNAL_AVX2_FAST(cpu_flags)) {
|
|
c->diff_bytes = ff_diff_bytes_avx2;
|
|
}
|
|
}
|