mirror of https://git.ffmpeg.org/ffmpeg.git
97 lines
2.5 KiB
C
97 lines
2.5 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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/dsputil.h"
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#include "libavcodec/mpegvideo.h"
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#include "dsputil_mmx.h"
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#if HAVE_INLINE_ASM
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extern uint16_t ff_inv_zigzag_direct16[64];
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#if HAVE_SSSE3
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#define HAVE_SSSE3_BAK
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#endif
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#undef HAVE_SSSE3
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#define HAVE_SSSE3 0
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#undef HAVE_SSE2
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#undef HAVE_MMXEXT
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#define HAVE_SSE2 0
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#define HAVE_MMXEXT 0
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#define RENAME(a) a ## _MMX
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#define RENAMEl(a) a ## _mmx
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#include "mpegvideoenc_template.c"
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#undef HAVE_MMXEXT
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#define HAVE_MMXEXT 1
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#undef RENAME
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#undef RENAMEl
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#define RENAME(a) a ## _MMX2
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#define RENAMEl(a) a ## _mmx2
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#include "mpegvideoenc_template.c"
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#undef HAVE_SSE2
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#define HAVE_SSE2 1
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#undef RENAME
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#undef RENAMEl
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#define RENAME(a) a ## _SSE2
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#define RENAMEl(a) a ## _sse2
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#include "mpegvideoenc_template.c"
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#ifdef HAVE_SSSE3_BAK
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#undef HAVE_SSSE3
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#define HAVE_SSSE3 1
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#undef RENAME
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#undef RENAMEl
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#define RENAME(a) a ## _SSSE3
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#define RENAMEl(a) a ## _sse2
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#include "mpegvideoenc_template.c"
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#endif
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#endif /* HAVE_INLINE_ASM */
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void ff_MPV_encode_init_x86(MpegEncContext *s)
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{
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#if HAVE_INLINE_ASM
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int mm_flags = av_get_cpu_flags();
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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_SSSE3
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if (mm_flags & AV_CPU_FLAG_SSSE3) {
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s->dct_quantize = dct_quantize_SSSE3;
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} else
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#endif
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if (mm_flags & AV_CPU_FLAG_SSE2) {
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s->dct_quantize = dct_quantize_SSE2;
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} else if (mm_flags & AV_CPU_FLAG_MMXEXT) {
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s->dct_quantize = dct_quantize_MMX2;
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} else {
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s->dct_quantize = dct_quantize_MMX;
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}
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}
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#endif /* HAVE_INLINE_ASM */
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}
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