1/* 2 * The simplest mpeg encoder (well, it was the simplest!) 3 * Copyright (c) 2000,2001 Fabrice Bellard 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "libavutil/attributes.h" 23#include "libavutil/cpu.h" 24#include "libavutil/mem_internal.h" 25#include "libavutil/x86/asm.h" 26#include "libavutil/x86/cpu.h" 27#include "libavcodec/avcodec.h" 28#include "libavcodec/dct.h" 29#include "libavcodec/mpegvideoenc.h" 30 31/* not permutated inverse zigzag_direct + 1 for MMX quantizer */ 32DECLARE_ALIGNED(16, static const uint16_t, inv_zigzag_direct16)[64] = { 33 1, 2, 6, 7, 15, 16, 28, 29, 34 3, 5, 8, 14, 17, 27, 30, 43, 35 4, 9, 13, 18, 26, 31, 42, 44, 36 10, 12, 19, 25, 32, 41, 45, 54, 37 11, 20, 24, 33, 40, 46, 53, 55, 38 21, 23, 34, 39, 47, 52, 56, 61, 39 22, 35, 38, 48, 51, 57, 60, 62, 40 36, 37, 49, 50, 58, 59, 63, 64, 41}; 42 43#if HAVE_6REGS 44 45#if HAVE_SSE2_INLINE 46#undef COMPILE_TEMPLATE_SSE2 47#undef COMPILE_TEMPLATE_SSSE3 48#define COMPILE_TEMPLATE_SSE2 1 49#define COMPILE_TEMPLATE_SSSE3 0 50#undef RENAME 51#undef RENAME_FDCT 52#define RENAME(a) a ## _sse2 53#define RENAME_FDCT(a) a ## _sse2 54#include "mpegvideoenc_template.c" 55#endif /* HAVE_SSE2_INLINE */ 56 57#if HAVE_SSSE3_INLINE 58#undef COMPILE_TEMPLATE_SSE2 59#undef COMPILE_TEMPLATE_SSSE3 60#define COMPILE_TEMPLATE_SSE2 1 61#define COMPILE_TEMPLATE_SSSE3 1 62#undef RENAME 63#undef RENAME_FDCT 64#define RENAME(a) a ## _ssse3 65#define RENAME_FDCT(a) a ## _sse2 66#include "mpegvideoenc_template.c" 67#endif /* HAVE_SSSE3_INLINE */ 68 69#endif /* HAVE_6REGS */ 70 71#if HAVE_INLINE_ASM 72#if HAVE_SSE2_INLINE 73static void denoise_dct_sse2(MpegEncContext *s, int16_t *block){ 74 const int intra= s->mb_intra; 75 int *sum= s->dct_error_sum[intra]; 76 uint16_t *offset= s->dct_offset[intra]; 77 78 s->dct_count[intra]++; 79 80 __asm__ volatile( 81 "pxor %%xmm7, %%xmm7 \n\t" 82 "1: \n\t" 83 "pxor %%xmm0, %%xmm0 \n\t" 84 "pxor %%xmm1, %%xmm1 \n\t" 85 "movdqa (%0), %%xmm2 \n\t" 86 "movdqa 16(%0), %%xmm3 \n\t" 87 "pcmpgtw %%xmm2, %%xmm0 \n\t" 88 "pcmpgtw %%xmm3, %%xmm1 \n\t" 89 "pxor %%xmm0, %%xmm2 \n\t" 90 "pxor %%xmm1, %%xmm3 \n\t" 91 "psubw %%xmm0, %%xmm2 \n\t" 92 "psubw %%xmm1, %%xmm3 \n\t" 93 "movdqa %%xmm2, %%xmm4 \n\t" 94 "movdqa %%xmm3, %%xmm5 \n\t" 95 "psubusw (%2), %%xmm2 \n\t" 96 "psubusw 16(%2), %%xmm3 \n\t" 97 "pxor %%xmm0, %%xmm2 \n\t" 98 "pxor %%xmm1, %%xmm3 \n\t" 99 "psubw %%xmm0, %%xmm2 \n\t" 100 "psubw %%xmm1, %%xmm3 \n\t" 101 "movdqa %%xmm2, (%0) \n\t" 102 "movdqa %%xmm3, 16(%0) \n\t" 103 "movdqa %%xmm4, %%xmm6 \n\t" 104 "movdqa %%xmm5, %%xmm0 \n\t" 105 "punpcklwd %%xmm7, %%xmm4 \n\t" 106 "punpckhwd %%xmm7, %%xmm6 \n\t" 107 "punpcklwd %%xmm7, %%xmm5 \n\t" 108 "punpckhwd %%xmm7, %%xmm0 \n\t" 109 "paddd (%1), %%xmm4 \n\t" 110 "paddd 16(%1), %%xmm6 \n\t" 111 "paddd 32(%1), %%xmm5 \n\t" 112 "paddd 48(%1), %%xmm0 \n\t" 113 "movdqa %%xmm4, (%1) \n\t" 114 "movdqa %%xmm6, 16(%1) \n\t" 115 "movdqa %%xmm5, 32(%1) \n\t" 116 "movdqa %%xmm0, 48(%1) \n\t" 117 "add $32, %0 \n\t" 118 "add $64, %1 \n\t" 119 "add $32, %2 \n\t" 120 "cmp %3, %0 \n\t" 121 " jb 1b \n\t" 122 : "+r" (block), "+r" (sum), "+r" (offset) 123 : "r"(block+64) 124 XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3", 125 "%xmm4", "%xmm5", "%xmm6", "%xmm7") 126 ); 127} 128#endif /* HAVE_SSE2_INLINE */ 129#endif /* HAVE_INLINE_ASM */ 130 131av_cold void ff_dct_encode_init_x86(MpegEncContext *s) 132{ 133 const int dct_algo = s->avctx->dct_algo; 134 135 if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) { 136#if HAVE_MMX_INLINE 137 int cpu_flags = av_get_cpu_flags(); 138#if HAVE_SSE2_INLINE 139 if (INLINE_SSE2(cpu_flags)) { 140#if HAVE_6REGS 141 s->dct_quantize = dct_quantize_sse2; 142#endif 143 s->denoise_dct = denoise_dct_sse2; 144 } 145#endif 146#if HAVE_6REGS && HAVE_SSSE3_INLINE 147 if (INLINE_SSSE3(cpu_flags)) 148 s->dct_quantize = dct_quantize_ssse3; 149#endif 150#endif 151 } 152} 153