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/*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/avcodec.h"
#include "libavcodec/mpegvideoencdsp.h"
#if HAVE_INLINE_ASM
#define PHADDD(a, t) \
"movq " #a ", " #t " \n\t" \
"psrlq $32, " #a " \n\t" \
"paddd " #t ", " #a " \n\t"
/*
* pmulhw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15])[16 - 31]
* pmulhrw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x8000)[16 - 31]
* pmulhrsw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x4000)[15 - 30]
*/
#define PMULHRW(x, y, s, o) \
"pmulhw " #s ", " #x " \n\t" \
"pmulhw " #s ", " #y " \n\t" \
"paddw " #o ", " #x " \n\t" \
"paddw " #o ", " #y " \n\t" \
"psraw $1, " #x " \n\t" \
"psraw $1, " #y " \n\t"
#define DEF(x) x ## _mmx
#define SET_RND MOVQ_WONE
#define SCALE_OFFSET 1
#include "mpegvideoenc_qns_template.c"
#undef DEF
#undef SET_RND
#undef SCALE_OFFSET
#undef PMULHRW
#define DEF(x) x ## _3dnow
#define SET_RND(x)
#define SCALE_OFFSET 0
#define PMULHRW(x, y, s, o) \
"pmulhrw " #s ", " #x " \n\t" \
"pmulhrw " #s ", " #y " \n\t"
#include "mpegvideoenc_qns_template.c"
#undef DEF
#undef SET_RND
#undef SCALE_OFFSET
#undef PMULHRW
#if HAVE_SSSE3_INLINE
#undef PHADDD
#define DEF(x) x ## _ssse3
#define SET_RND(x)
#define SCALE_OFFSET -1
#define PHADDD(a, t) \
"pshufw $0x0E, " #a ", " #t " \n\t" \
/* faster than phaddd on core2 */ \
"paddd " #t ", " #a " \n\t"
#define PMULHRW(x, y, s, o) \
"pmulhrsw " #s ", " #x " \n\t" \
"pmulhrsw " #s ", " #y " \n\t"
#include "mpegvideoenc_qns_template.c"
#undef DEF
#undef SET_RND
#undef SCALE_OFFSET
#undef PMULHRW
#undef PHADDD
#endif /* HAVE_SSSE3_INLINE */
#endif /* HAVE_INLINE_ASM */
av_cold void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c,
AVCodecContext *avctx)
{
#if HAVE_INLINE_ASM
int cpu_flags = av_get_cpu_flags();
if (INLINE_MMX(cpu_flags)) {
if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
c->try_8x8basis = try_8x8basis_mmx;
}
c->add_8x8basis = add_8x8basis_mmx;
}
if (INLINE_AMD3DNOW(cpu_flags)) {
if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
c->try_8x8basis = try_8x8basis_3dnow;
}
c->add_8x8basis = add_8x8basis_3dnow;
}
#if HAVE_SSSE3_INLINE
if (INLINE_SSSE3(cpu_flags)) {
if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
c->try_8x8basis = try_8x8basis_ssse3;
}
c->add_8x8basis = add_8x8basis_ssse3;
}
#endif /* HAVE_SSSE3_INLINE */
#endif /* HAVE_INLINE_ASM */
}
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