mirror of
https://github.com/FFmpeg/FFmpeg.git
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119 lines
4.2 KiB
C
119 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 "config.h"
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#include "libavutil/x86/asm.h"
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#include "../lossless_videodsp.h"
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#include "libavutil/x86/cpu.h"
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void ff_add_bytes_mmx(uint8_t *dst, uint8_t *src, ptrdiff_t w);
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void ff_add_bytes_sse2(uint8_t *dst, uint8_t *src, ptrdiff_t w);
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void ff_add_median_pred_mmxext(uint8_t *dst, const uint8_t *top,
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const uint8_t *diff, ptrdiff_t w,
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int *left, int *left_top);
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void ff_add_median_pred_sse2(uint8_t *dst, const uint8_t *top,
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const uint8_t *diff, ptrdiff_t w,
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int *left, int *left_top);
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int ff_add_left_pred_ssse3(uint8_t *dst, const uint8_t *src,
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ptrdiff_t w, int left);
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int ff_add_left_pred_unaligned_ssse3(uint8_t *dst, const uint8_t *src,
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ptrdiff_t w, int left);
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int ff_add_left_pred_int16_ssse3(uint16_t *dst, const uint16_t *src, unsigned mask, ptrdiff_t w, unsigned acc);
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int ff_add_left_pred_int16_sse4(uint16_t *dst, const uint16_t *src, unsigned mask, ptrdiff_t w, unsigned acc);
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#if HAVE_INLINE_ASM && HAVE_7REGS && ARCH_X86_32
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static void add_median_pred_cmov(uint8_t *dst, const uint8_t *top,
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const uint8_t *diff, ptrdiff_t w,
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int *left, int *left_top)
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{
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x86_reg w2 = -w;
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x86_reg x;
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int l = *left & 0xff;
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int tl = *left_top & 0xff;
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int t;
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__asm__ volatile (
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"mov %7, %3 \n"
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"1: \n"
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"movzbl (%3, %4), %2 \n"
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"mov %2, %k3 \n"
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"sub %b1, %b3 \n"
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"add %b0, %b3 \n"
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"mov %2, %1 \n"
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"cmp %0, %2 \n"
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"cmovg %0, %2 \n"
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"cmovg %1, %0 \n"
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"cmp %k3, %0 \n"
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"cmovg %k3, %0 \n"
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"mov %7, %3 \n"
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"cmp %2, %0 \n"
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"cmovl %2, %0 \n"
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"add (%6, %4), %b0 \n"
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"mov %b0, (%5, %4) \n"
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"inc %4 \n"
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"jl 1b \n"
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: "+&q"(l), "+&q"(tl), "=&r"(t), "=&q"(x), "+&r"(w2)
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: "r"(dst + w), "r"(diff + w), "rm"(top + w)
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);
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*left = l;
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*left_top = tl;
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}
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#endif
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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 HAVE_INLINE_ASM && HAVE_7REGS && ARCH_X86_32
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if (cpu_flags & AV_CPU_FLAG_CMOV)
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c->add_median_pred = add_median_pred_cmov;
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#endif
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if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
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c->add_bytes = ff_add_bytes_mmx;
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}
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if (ARCH_X86_32 && EXTERNAL_MMXEXT(cpu_flags)) {
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/* slower than cmov version on AMD */
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if (!(cpu_flags & AV_CPU_FLAG_3DNOW))
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c->add_median_pred = ff_add_median_pred_mmxext;
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}
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if (EXTERNAL_SSE2(cpu_flags)) {
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c->add_bytes = ff_add_bytes_sse2;
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c->add_median_pred = ff_add_median_pred_sse2;
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}
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if (EXTERNAL_SSSE3(cpu_flags)) {
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c->add_left_pred = ff_add_left_pred_ssse3;
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c->add_left_pred_int16 = ff_add_left_pred_int16_ssse3;
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}
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if (EXTERNAL_SSSE3_FAST(cpu_flags)) {
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c->add_left_pred = ff_add_left_pred_unaligned_ssse3;
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}
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if (EXTERNAL_SSE4(cpu_flags)) {
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c->add_left_pred_int16 = ff_add_left_pred_int16_sse4;
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}
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}
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