mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
3.8 KiB
111 lines
3.8 KiB
/* |
|
* 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; |
|
} |
|
}
|
|
|