mirror of https://git.ffmpeg.org/ffmpeg.git
126 lines
3.6 KiB
C
126 lines
3.6 KiB
C
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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/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/mpegvideoencdsp.h"
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#if HAVE_INLINE_ASM
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#define PHADDD(a, t) \
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"movq " #a ", " #t " \n\t" \
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"psrlq $32, " #a " \n\t" \
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"paddd " #t ", " #a " \n\t"
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/*
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* pmulhw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15])[16 - 31]
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* pmulhrw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x8000)[16 - 31]
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* pmulhrsw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x4000)[15 - 30]
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*/
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#define PMULHRW(x, y, s, o) \
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"pmulhw " #s ", " #x " \n\t" \
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"pmulhw " #s ", " #y " \n\t" \
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"paddw " #o ", " #x " \n\t" \
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"paddw " #o ", " #y " \n\t" \
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"psraw $1, " #x " \n\t" \
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"psraw $1, " #y " \n\t"
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#define DEF(x) x ## _mmx
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#define SET_RND MOVQ_WONE
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#define SCALE_OFFSET 1
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#include "mpegvideoenc_qns_template.c"
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#undef DEF
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#undef SET_RND
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#undef SCALE_OFFSET
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#undef PMULHRW
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#define DEF(x) x ## _3dnow
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#define SET_RND(x)
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#define SCALE_OFFSET 0
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#define PMULHRW(x, y, s, o) \
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"pmulhrw " #s ", " #x " \n\t" \
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"pmulhrw " #s ", " #y " \n\t"
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#include "mpegvideoenc_qns_template.c"
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#undef DEF
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#undef SET_RND
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#undef SCALE_OFFSET
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#undef PMULHRW
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#if HAVE_SSSE3_INLINE
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#undef PHADDD
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#define DEF(x) x ## _ssse3
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#define SET_RND(x)
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#define SCALE_OFFSET -1
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#define PHADDD(a, t) \
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"pshufw $0x0E, " #a ", " #t " \n\t" \
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/* faster than phaddd on core2 */ \
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"paddd " #t ", " #a " \n\t"
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#define PMULHRW(x, y, s, o) \
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"pmulhrsw " #s ", " #x " \n\t" \
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"pmulhrsw " #s ", " #y " \n\t"
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#include "mpegvideoenc_qns_template.c"
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#undef DEF
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#undef SET_RND
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#undef SCALE_OFFSET
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#undef PMULHRW
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#undef PHADDD
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#endif /* HAVE_SSSE3_INLINE */
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#endif /* HAVE_INLINE_ASM */
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av_cold void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c,
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AVCodecContext *avctx)
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{
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#if HAVE_INLINE_ASM
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int cpu_flags = av_get_cpu_flags();
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if (INLINE_MMX(cpu_flags)) {
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if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
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c->try_8x8basis = try_8x8basis_mmx;
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}
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c->add_8x8basis = add_8x8basis_mmx;
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}
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if (INLINE_AMD3DNOW(cpu_flags)) {
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if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
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c->try_8x8basis = try_8x8basis_3dnow;
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}
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c->add_8x8basis = add_8x8basis_3dnow;
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}
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#if HAVE_SSSE3_INLINE
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if (INLINE_SSSE3(cpu_flags)) {
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if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
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c->try_8x8basis = try_8x8basis_ssse3;
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}
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c->add_8x8basis = add_8x8basis_ssse3;
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}
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#endif /* HAVE_SSSE3_INLINE */
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#endif /* HAVE_INLINE_ASM */
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}
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