mirror of
https://github.com/FFmpeg/FFmpeg.git
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106 lines
4.2 KiB
C
106 lines
4.2 KiB
C
/*
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* Lossless video DSP utils
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*
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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 "../lossless_videodsp.h"
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#include "libavutil/x86/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "libavcodec/mathops.h"
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void ff_add_int16_mmx(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
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void ff_add_int16_sse2(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
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void ff_diff_int16_mmx (uint16_t *dst, const uint16_t *src1, const uint16_t *src2, unsigned mask, int w);
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void ff_diff_int16_sse2(uint16_t *dst, const uint16_t *src1, const uint16_t *src2, unsigned mask, int w);
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int ff_add_hfyu_left_prediction_int16_ssse3(uint16_t *dst, const uint16_t *src, unsigned mask, int w, int acc);
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int ff_add_hfyu_left_prediction_int16_sse4(uint16_t *dst, const uint16_t *src, unsigned mask, int w, int acc);
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void ff_add_hfyu_median_prediction_int16_mmxext(uint16_t *dst, const uint16_t *top, const uint16_t *diff, unsigned mask, int w, int *left, int *left_top);
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static void sub_hfyu_median_prediction_int16_mmxext(uint16_t *dst, const uint16_t *src1,
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const uint16_t *src2, unsigned mask, int w,
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int *left, int *left_top)
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{
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x86_reg i=0;
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uint16_t l, lt;
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__asm__ volatile(
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"movd %5, %%mm7 \n\t"
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"pshufw $0, %%mm7, %%mm7 \n\t"
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"movq (%1, %0), %%mm0 \n\t" // LT
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"psllq $16, %%mm0 \n\t"
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"1: \n\t"
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"movq (%1, %0), %%mm1 \n\t" // T
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"movq -2(%2, %0), %%mm2 \n\t" // L
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"movq (%2, %0), %%mm3 \n\t" // X
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"movq %%mm2, %%mm4 \n\t" // L
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"psubw %%mm0, %%mm2 \n\t"
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"paddw %%mm1, %%mm2 \n\t" // L + T - LT
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"pand %%mm7, %%mm2 \n\t"
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"movq %%mm4, %%mm5 \n\t" // L
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"pmaxsw %%mm1, %%mm4 \n\t" // max(T, L)
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"pminsw %%mm5, %%mm1 \n\t" // min(T, L)
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"pminsw %%mm2, %%mm4 \n\t"
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"pmaxsw %%mm1, %%mm4 \n\t"
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"psubw %%mm4, %%mm3 \n\t" // dst - pred
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"pand %%mm7, %%mm3 \n\t"
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"movq %%mm3, (%3, %0) \n\t"
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"add $8, %0 \n\t"
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"movq -2(%1, %0), %%mm0 \n\t" // LT
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"cmp %4, %0 \n\t"
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" jb 1b \n\t"
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: "+r" (i)
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: "r"(src1), "r"(src2), "r"(dst), "r"((x86_reg)2*w), "rm"(mask)
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);
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l= *left;
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lt= *left_top;
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dst[0]= src2[0] - mid_pred(l, src1[0], (l + src1[0] - lt)&mask);
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*left_top= src1[w-1];
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*left = src2[w-1];
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}
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void ff_llviddsp_init_x86(LLVidDSPContext *c)
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{
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int cpu_flags = av_get_cpu_flags();
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if (EXTERNAL_MMX(cpu_flags)) {
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c->add_int16 = ff_add_int16_mmx;
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c->diff_int16 = ff_diff_int16_mmx;
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}
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if (EXTERNAL_MMXEXT(cpu_flags)) {
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c->add_hfyu_median_prediction_int16 = ff_add_hfyu_median_prediction_int16_mmxext;
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c->sub_hfyu_median_prediction_int16 = sub_hfyu_median_prediction_int16_mmxext;
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}
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if (EXTERNAL_SSE2(cpu_flags)) {
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c->add_int16 = ff_add_int16_sse2;
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c->diff_int16 = ff_diff_int16_sse2;
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}
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if (EXTERNAL_SSSE3(cpu_flags)) {
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c->add_hfyu_left_prediction_int16 = ff_add_hfyu_left_prediction_int16_ssse3;
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}
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if (EXTERNAL_SSE4(cpu_flags)) {
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c->add_hfyu_left_prediction_int16 = ff_add_hfyu_left_prediction_int16_sse4;
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}
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}
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