mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-12-23 12:08:24 +00:00
225 lines
9.2 KiB
C
225 lines
9.2 KiB
C
/*
|
|
* audio conversion
|
|
* Copyright (c) 2006 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* audio conversion
|
|
* @author Michael Niedermayer <michaelni@gmx.at>
|
|
*/
|
|
|
|
#include "libavutil/avstring.h"
|
|
#include "libavutil/avassert.h"
|
|
#include "libavutil/libm.h"
|
|
#include "libavutil/samplefmt.h"
|
|
#include "audioconvert.h"
|
|
|
|
|
|
#define CONV_FUNC_NAME(dst_fmt, src_fmt) conv_ ## src_fmt ## _to_ ## dst_fmt
|
|
|
|
//FIXME rounding ?
|
|
#define CONV_FUNC(ofmt, otype, ifmt, expr)\
|
|
static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)\
|
|
{\
|
|
uint8_t *end2 = end - 3*os;\
|
|
while(po < end2){\
|
|
*(otype*)po = expr; pi += is; po += os;\
|
|
*(otype*)po = expr; pi += is; po += os;\
|
|
*(otype*)po = expr; pi += is; po += os;\
|
|
*(otype*)po = expr; pi += is; po += os;\
|
|
}\
|
|
while(po < end){\
|
|
*(otype*)po = expr; pi += is; po += os;\
|
|
}\
|
|
}
|
|
|
|
//FIXME put things below under ifdefs so we do not waste space for cases no codec will need
|
|
CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_U8 , *(const uint8_t*)pi)
|
|
CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)<<8)
|
|
CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)<<24)
|
|
CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0f/ (1<<7)))
|
|
CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_U8 , (*(const uint8_t*)pi - 0x80)*(1.0 / (1<<7)))
|
|
CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S16, (*(const int16_t*)pi>>8) + 0x80)
|
|
CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S16, *(const int16_t*)pi)
|
|
CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t*)pi<<16)
|
|
CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_S16, *(const int16_t*)pi*(1.0f/ (1<<15)))
|
|
CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S16, *(const int16_t*)pi*(1.0 / (1<<15)))
|
|
CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_S32, (*(const int32_t*)pi>>24) + 0x80)
|
|
CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_S32, *(const int32_t*)pi>>16)
|
|
CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S32, *(const int32_t*)pi)
|
|
CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_S32, *(const int32_t*)pi*(1.0f/ (1U<<31)))
|
|
CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_S32, *(const int32_t*)pi*(1.0 / (1U<<31)))
|
|
CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8( lrintf(*(const float*)pi * (1<<7)) + 0x80))
|
|
CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16( lrintf(*(const float*)pi * (1<<15))))
|
|
CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float*)pi * (1U<<31))))
|
|
CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_FLT, *(const float*)pi)
|
|
CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_FLT, *(const float*)pi)
|
|
CONV_FUNC(AV_SAMPLE_FMT_U8 , uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8( lrint(*(const double*)pi * (1<<7)) + 0x80))
|
|
CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16( lrint(*(const double*)pi * (1<<15))))
|
|
CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double*)pi * (1U<<31))))
|
|
CONV_FUNC(AV_SAMPLE_FMT_FLT, float , AV_SAMPLE_FMT_DBL, *(const double*)pi)
|
|
CONV_FUNC(AV_SAMPLE_FMT_DBL, double , AV_SAMPLE_FMT_DBL, *(const double*)pi)
|
|
|
|
#define FMT_PAIR_FUNC(out, in) [out + AV_SAMPLE_FMT_NB*in] = CONV_FUNC_NAME(out, in)
|
|
|
|
static conv_func_type * const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB*AV_SAMPLE_FMT_NB] = {
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_U8 ),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8 ),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8 ),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8 ),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8 ),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S16),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_S32),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_FLT),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8 , AV_SAMPLE_FMT_DBL),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL),
|
|
FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL),
|
|
};
|
|
|
|
static void cpy1(uint8_t **dst, const uint8_t **src, int len){
|
|
memcpy(*dst, *src, len);
|
|
}
|
|
static void cpy2(uint8_t **dst, const uint8_t **src, int len){
|
|
memcpy(*dst, *src, 2*len);
|
|
}
|
|
static void cpy4(uint8_t **dst, const uint8_t **src, int len){
|
|
memcpy(*dst, *src, 4*len);
|
|
}
|
|
static void cpy8(uint8_t **dst, const uint8_t **src, int len){
|
|
memcpy(*dst, *src, 8*len);
|
|
}
|
|
|
|
AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt,
|
|
enum AVSampleFormat in_fmt,
|
|
int channels, const int *ch_map,
|
|
int flags)
|
|
{
|
|
AudioConvert *ctx;
|
|
conv_func_type *f = fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt) + AV_SAMPLE_FMT_NB*av_get_packed_sample_fmt(in_fmt)];
|
|
|
|
if (!f)
|
|
return NULL;
|
|
ctx = av_mallocz(sizeof(*ctx));
|
|
if (!ctx)
|
|
return NULL;
|
|
|
|
if(channels == 1){
|
|
in_fmt = av_get_planar_sample_fmt( in_fmt);
|
|
out_fmt = av_get_planar_sample_fmt(out_fmt);
|
|
}
|
|
|
|
ctx->channels = channels;
|
|
ctx->conv_f = f;
|
|
ctx->ch_map = ch_map;
|
|
if (in_fmt == AV_SAMPLE_FMT_U8 || in_fmt == AV_SAMPLE_FMT_U8P)
|
|
memset(ctx->silence, 0x80, sizeof(ctx->silence));
|
|
|
|
if(out_fmt == in_fmt && !ch_map) {
|
|
switch(av_get_bytes_per_sample(in_fmt)){
|
|
case 1:ctx->simd_f = cpy1; break;
|
|
case 2:ctx->simd_f = cpy2; break;
|
|
case 4:ctx->simd_f = cpy4; break;
|
|
case 8:ctx->simd_f = cpy8; break;
|
|
}
|
|
}
|
|
|
|
if(HAVE_YASM && HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);
|
|
if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);
|
|
|
|
return ctx;
|
|
}
|
|
|
|
void swri_audio_convert_free(AudioConvert **ctx)
|
|
{
|
|
av_freep(ctx);
|
|
}
|
|
|
|
int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len)
|
|
{
|
|
int ch;
|
|
int off=0;
|
|
const int os= (out->planar ? 1 :out->ch_count) *out->bps;
|
|
unsigned misaligned = 0;
|
|
|
|
av_assert0(ctx->channels == out->ch_count);
|
|
|
|
if (ctx->in_simd_align_mask) {
|
|
int planes = in->planar ? in->ch_count : 1;
|
|
unsigned m = 0;
|
|
for (ch = 0; ch < planes; ch++)
|
|
m |= (intptr_t)in->ch[ch];
|
|
misaligned |= m & ctx->in_simd_align_mask;
|
|
}
|
|
if (ctx->out_simd_align_mask) {
|
|
int planes = out->planar ? out->ch_count : 1;
|
|
unsigned m = 0;
|
|
for (ch = 0; ch < planes; ch++)
|
|
m |= (intptr_t)out->ch[ch];
|
|
misaligned |= m & ctx->out_simd_align_mask;
|
|
}
|
|
|
|
//FIXME optimize common cases
|
|
|
|
if(ctx->simd_f && !ctx->ch_map && !misaligned){
|
|
off = len&~15;
|
|
av_assert1(off>=0);
|
|
av_assert1(off<=len);
|
|
av_assert2(ctx->channels == SWR_CH_MAX || !in->ch[ctx->channels]);
|
|
if(off>0){
|
|
if(out->planar == in->planar){
|
|
int planes = out->planar ? out->ch_count : 1;
|
|
for(ch=0; ch<planes; ch++){
|
|
ctx->simd_f(out->ch+ch, (const uint8_t **)in->ch+ch, off * (out->planar ? 1 :out->ch_count));
|
|
}
|
|
}else{
|
|
ctx->simd_f(out->ch, (const uint8_t **)in->ch, off);
|
|
}
|
|
}
|
|
if(off == len)
|
|
return 0;
|
|
}
|
|
|
|
for(ch=0; ch<ctx->channels; ch++){
|
|
const int ich= ctx->ch_map ? ctx->ch_map[ch] : ch;
|
|
const int is= ich < 0 ? 0 : (in->planar ? 1 : in->ch_count) * in->bps;
|
|
const uint8_t *pi= ich < 0 ? ctx->silence : in->ch[ich];
|
|
uint8_t *po= out->ch[ch];
|
|
uint8_t *end= po + os*len;
|
|
if(!po)
|
|
continue;
|
|
ctx->conv_f(po+off*os, pi+off*is, is, os, end);
|
|
}
|
|
return 0;
|
|
}
|