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/*
* Format Conversion Utils
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
*/
#include "libavutil/cpu.h"
#include "libavutil/x86_cpu.h"
#include "libavcodec/fmtconvert.h"
#if HAVE_YASM
void ff_int32_to_float_fmul_scalar_sse (float *dst, const int *src, float mul, int len);
void ff_int32_to_float_fmul_scalar_sse2(float *dst, const int *src, float mul, int len);
void ff_float_to_int16_3dnow(int16_t *dst, const float *src, long len);
void ff_float_to_int16_sse (int16_t *dst, const float *src, long len);
void ff_float_to_int16_sse2 (int16_t *dst, const float *src, long len);
void ff_float_to_int16_interleave2_3dnow(int16_t *dst, const float **src, long len);
void ff_float_to_int16_interleave2_sse (int16_t *dst, const float **src, long len);
void ff_float_to_int16_interleave2_sse2 (int16_t *dst, const float **src, long len);
void ff_float_to_int16_interleave6_sse(int16_t *dst, const float **src, int len);
void ff_float_to_int16_interleave6_3dnow(int16_t *dst, const float **src, int len);
void ff_float_to_int16_interleave6_3dn2(int16_t *dst, const float **src, int len);
#define ff_float_to_int16_interleave6_sse2 ff_float_to_int16_interleave6_sse
#define FLOAT_TO_INT16_INTERLEAVE(cpu) \
/* gcc pessimizes register allocation if this is in the same function as float_to_int16_interleave_sse2*/\
static av_noinline void float_to_int16_interleave_misc_##cpu(int16_t *dst, const float **src, long len, int channels){\
DECLARE_ALIGNED(16, int16_t, tmp)[len];\
int i,j,c;\
for(c=0; c<channels; c++){\
ff_float_to_int16_##cpu(tmp, src[c], len);\
for(i=0, j=c; i<len; i++, j+=channels)\
dst[j] = tmp[i];\
}\
}\
\
static void float_to_int16_interleave_##cpu(int16_t *dst, const float **src, long len, int channels){\
if(channels==1)\
ff_float_to_int16_##cpu(dst, src[0], len);\
else if(channels==2){\
ff_float_to_int16_interleave2_##cpu(dst, src, len);\
}else if(channels==6){\
ff_float_to_int16_interleave6_##cpu(dst, src, len);\
}else\
float_to_int16_interleave_misc_##cpu(dst, src, len, channels);\
}
FLOAT_TO_INT16_INTERLEAVE(3dnow)
FLOAT_TO_INT16_INTERLEAVE(sse)
FLOAT_TO_INT16_INTERLEAVE(sse2)
static void float_to_int16_interleave_3dn2(int16_t *dst, const float **src, long len, int channels){
if(channels==6)
ff_float_to_int16_interleave6_3dn2(dst, src, len);
else
float_to_int16_interleave_3dnow(dst, src, len, channels);
}
void ff_float_interleave2_mmx(float *dst, const float **src, unsigned int len);
void ff_float_interleave2_sse(float *dst, const float **src, unsigned int len);
void ff_float_interleave6_mmx(float *dst, const float **src, unsigned int len);
void ff_float_interleave6_sse(float *dst, const float **src, unsigned int len);
static void float_interleave_mmx(float *dst, const float **src,
unsigned int len, int channels)
{
if (channels == 2) {
ff_float_interleave2_mmx(dst, src, len);
} else if (channels == 6)
ff_float_interleave6_mmx(dst, src, len);
else
ff_float_interleave_c(dst, src, len, channels);
}
static void float_interleave_sse(float *dst, const float **src,
unsigned int len, int channels)
{
if (channels == 2) {
ff_float_interleave2_sse(dst, src, len);
} else if (channels == 6)
ff_float_interleave6_sse(dst, src, len);
else
ff_float_interleave_c(dst, src, len, channels);
}
#endif
void ff_fmt_convert_init_x86(FmtConvertContext *c, AVCodecContext *avctx)
{
int mm_flags = av_get_cpu_flags();
#if HAVE_YASM
if (mm_flags & AV_CPU_FLAG_MMX) {
c->float_interleave = float_interleave_mmx;
if (HAVE_AMD3DNOW && mm_flags & AV_CPU_FLAG_3DNOW) {
if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
c->float_to_int16 = ff_float_to_int16_3dnow;
c->float_to_int16_interleave = float_to_int16_interleave_3dnow;
}
}
if (HAVE_AMD3DNOWEXT && mm_flags & AV_CPU_FLAG_3DNOWEXT) {
if(!(avctx->flags & CODEC_FLAG_BITEXACT)){
c->float_to_int16_interleave = float_to_int16_interleave_3dn2;
}
}
if (HAVE_SSE && mm_flags & AV_CPU_FLAG_SSE) {
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse;
c->float_to_int16 = ff_float_to_int16_sse;
c->float_to_int16_interleave = float_to_int16_interleave_sse;
c->float_interleave = float_interleave_sse;
}
if (HAVE_SSE && mm_flags & AV_CPU_FLAG_SSE2) {
c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_sse2;
c->float_to_int16 = ff_float_to_int16_sse2;
c->float_to_int16_interleave = float_to_int16_interleave_sse2;
}
}
#endif
}
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