mirror of https://git.ffmpeg.org/ffmpeg.git
153 lines
5.4 KiB
C
153 lines
5.4 KiB
C
/*
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* The simplest mpeg encoder (well, it was the simplest!)
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* Copyright (c) 2000,2001 Fabrice Bellard
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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 "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/mem_internal.h"
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#include "libavutil/x86/asm.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/dct.h"
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#include "libavcodec/mpegvideoenc.h"
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/* not permutated inverse zigzag_direct + 1 for MMX quantizer */
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DECLARE_ALIGNED(16, static const uint16_t, inv_zigzag_direct16)[64] = {
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1, 2, 6, 7, 15, 16, 28, 29,
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3, 5, 8, 14, 17, 27, 30, 43,
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4, 9, 13, 18, 26, 31, 42, 44,
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10, 12, 19, 25, 32, 41, 45, 54,
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11, 20, 24, 33, 40, 46, 53, 55,
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21, 23, 34, 39, 47, 52, 56, 61,
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22, 35, 38, 48, 51, 57, 60, 62,
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36, 37, 49, 50, 58, 59, 63, 64,
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};
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#if HAVE_6REGS
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#if HAVE_SSE2_INLINE
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#undef COMPILE_TEMPLATE_SSE2
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#undef COMPILE_TEMPLATE_SSSE3
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#define COMPILE_TEMPLATE_SSE2 1
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#define COMPILE_TEMPLATE_SSSE3 0
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#undef RENAME
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#undef RENAME_FDCT
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#define RENAME(a) a ## _sse2
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#define RENAME_FDCT(a) a ## _sse2
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#include "mpegvideoenc_template.c"
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#endif /* HAVE_SSE2_INLINE */
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#if HAVE_SSSE3_INLINE
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#undef COMPILE_TEMPLATE_SSE2
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#undef COMPILE_TEMPLATE_SSSE3
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#define COMPILE_TEMPLATE_SSE2 1
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#define COMPILE_TEMPLATE_SSSE3 1
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#undef RENAME
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#undef RENAME_FDCT
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#define RENAME(a) a ## _ssse3
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#define RENAME_FDCT(a) a ## _sse2
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#include "mpegvideoenc_template.c"
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#endif /* HAVE_SSSE3_INLINE */
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#endif /* HAVE_6REGS */
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#if HAVE_INLINE_ASM
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#if HAVE_SSE2_INLINE
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static void denoise_dct_sse2(MpegEncContext *s, int16_t *block){
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const int intra= s->mb_intra;
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int *sum= s->dct_error_sum[intra];
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uint16_t *offset= s->dct_offset[intra];
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s->dct_count[intra]++;
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__asm__ volatile(
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"pxor %%xmm7, %%xmm7 \n\t"
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"1: \n\t"
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"pxor %%xmm0, %%xmm0 \n\t"
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"pxor %%xmm1, %%xmm1 \n\t"
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"movdqa (%0), %%xmm2 \n\t"
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"movdqa 16(%0), %%xmm3 \n\t"
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"pcmpgtw %%xmm2, %%xmm0 \n\t"
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"pcmpgtw %%xmm3, %%xmm1 \n\t"
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"pxor %%xmm0, %%xmm2 \n\t"
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"pxor %%xmm1, %%xmm3 \n\t"
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"psubw %%xmm0, %%xmm2 \n\t"
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"psubw %%xmm1, %%xmm3 \n\t"
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"movdqa %%xmm2, %%xmm4 \n\t"
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"movdqa %%xmm3, %%xmm5 \n\t"
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"psubusw (%2), %%xmm2 \n\t"
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"psubusw 16(%2), %%xmm3 \n\t"
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"pxor %%xmm0, %%xmm2 \n\t"
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"pxor %%xmm1, %%xmm3 \n\t"
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"psubw %%xmm0, %%xmm2 \n\t"
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"psubw %%xmm1, %%xmm3 \n\t"
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"movdqa %%xmm2, (%0) \n\t"
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"movdqa %%xmm3, 16(%0) \n\t"
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"movdqa %%xmm4, %%xmm6 \n\t"
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"movdqa %%xmm5, %%xmm0 \n\t"
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"punpcklwd %%xmm7, %%xmm4 \n\t"
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"punpckhwd %%xmm7, %%xmm6 \n\t"
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"punpcklwd %%xmm7, %%xmm5 \n\t"
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"punpckhwd %%xmm7, %%xmm0 \n\t"
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"paddd (%1), %%xmm4 \n\t"
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"paddd 16(%1), %%xmm6 \n\t"
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"paddd 32(%1), %%xmm5 \n\t"
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"paddd 48(%1), %%xmm0 \n\t"
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"movdqa %%xmm4, (%1) \n\t"
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"movdqa %%xmm6, 16(%1) \n\t"
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"movdqa %%xmm5, 32(%1) \n\t"
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"movdqa %%xmm0, 48(%1) \n\t"
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"add $32, %0 \n\t"
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"add $64, %1 \n\t"
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"add $32, %2 \n\t"
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"cmp %3, %0 \n\t"
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" jb 1b \n\t"
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: "+r" (block), "+r" (sum), "+r" (offset)
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: "r"(block+64)
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XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
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"%xmm4", "%xmm5", "%xmm6", "%xmm7")
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);
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}
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#endif /* HAVE_SSE2_INLINE */
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#endif /* HAVE_INLINE_ASM */
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av_cold void ff_dct_encode_init_x86(MpegEncContext *s)
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{
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const int dct_algo = s->avctx->dct_algo;
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if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) {
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#if HAVE_MMX_INLINE
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int cpu_flags = av_get_cpu_flags();
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#if HAVE_SSE2_INLINE
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if (INLINE_SSE2(cpu_flags)) {
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#if HAVE_6REGS
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s->dct_quantize = dct_quantize_sse2;
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#endif
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s->denoise_dct = denoise_dct_sse2;
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}
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#endif
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#if HAVE_6REGS && HAVE_SSSE3_INLINE
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if (INLINE_SSSE3(cpu_flags))
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s->dct_quantize = dct_quantize_ssse3;
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#endif
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#endif
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}
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}
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