virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-11-21 10:55:51 +02:00
Code Issues Releases Activity

rematrix: dont use floats for int16 code.

Browse Source 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-09-19 09:18:05 +02:00
parent c3c1af6dc6
commit 8593b743a8
6 changed files with 27 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
libswresample/rematrix.c
View File

@ -22,12 +22,18 @@
#include "libavutil/audioconvert.h"
#include "libavutil/avassert.h"
#define ONE (1.0)
#define R(x) x
#define SAMPLE float
#define RENAME(x) x ## _float
#include "rematrix_template.c"
#undef SAMPLE
#undef RENAME
#undef R
#undef ONE
#define ONE (-32768)
#define R(x) (((x) + 16384)>>15)
#define SAMPLE int16_t
#define RENAME(x) x ## _s16
#include "rematrix_template.c"
@ -188,6 +194,7 @@ int swr_rematrix_init(SwrContext *s){
int ch_in=0;
for(j=0; j<64; j++){
s->matrix[out_i][in_i]= matrix[i][j];
s->matrix16[out_i][in_i]= lrintf(matrix[i][j] * 32768);
if(matrix[i][j]){
s->matrix_ch[out_i][++ch_in]= in_i;
sum += fabs(matrix[i][j]);
@ -203,8 +210,10 @@ int swr_rematrix_init(SwrContext *s){
if(( s->out_sample_fmt < AV_SAMPLE_FMT_FLT
|| s->int_sample_fmt < AV_SAMPLE_FMT_FLT) && maxcoef > 1.0){
for(i=0; i<SWR_CH_MAX; i++)
for(j=0; j<SWR_CH_MAX; j++)
for(j=0; j<SWR_CH_MAX; j++){
s->matrix[i][j] /= maxcoef;
s->matrix16[i][j]= lrintf(s->matrix[i][j] * 32768);
}
}
for(i=0; i<av_get_channel_layout_nb_channels(s->out_ch_layout); i++){
for(j=0; j<av_get_channel_layout_nb_channels(s->in_ch_layout); j++){
@ -229,7 +238,7 @@ av_assert0(in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout))
if(s->int_sample_fmt == AV_SAMPLE_FMT_FLT){
copy_float(out->ch[out_i], in->ch[in_i], s->matrix[out_i][in_i], len);
}else
copy_s16 (out->ch[out_i], in->ch[in_i], s->matrix[out_i][in_i], len);
copy_s16 (out->ch[out_i], in->ch[in_i], s->matrix16[out_i][in_i], len);
}else{
out->ch[out_i]= in->ch[in_i];
}
@ -241,7 +250,7 @@ av_assert0(in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout))
len);
}else{
sum2_s16 (out->ch[out_i], in->ch[ s->matrix_ch[out_i][1] ], in->ch[ s->matrix_ch[out_i][2] ],
s->matrix[out_i][ s->matrix_ch[out_i][1] ], s->matrix[out_i][ s->matrix_ch[out_i][2] ],
s->matrix16[out_i][ s->matrix_ch[out_i][1] ], s->matrix16[out_i][ s->matrix_ch[out_i][2] ],
len);
}
break;
@ -260,9 +269,9 @@ av_assert0(in ->ch_count == av_get_channel_layout_nb_channels(s-> in_ch_layout))
int v=0;
for(j=0; j<s->matrix_ch[out_i][0]; j++){
in_i= s->matrix_ch[out_i][1+j];
v+= ((int16_t*)in->ch[in_i])[i] * s->matrix[out_i][in_i]; //FIXME use int16 coeffs
v+= ((int16_t*)in->ch[in_i])[i] * s->matrix16[out_i][in_i];
}
((int16_t*)out->ch[out_i])[i]= v;
((int16_t*)out->ch[out_i])[i]= (v + 16384)>>15;
}
}
}

10
libswresample/rematrix_template.c
View File

@ -19,20 +19,20 @@
*/
static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, float coeff1, float coeff2, int len){
static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, SAMPLE coeff1, SAMPLE coeff2, int len){
int i;
for(i=0; i<len; i++)
out[i] = coeff1*in1[i] + coeff2*in2[i]; //FIXME better int16
out[i] = R(coeff1*in1[i] + coeff2*in2[i]);
}
static void RENAME(copy)(SAMPLE *out, const SAMPLE *in, float coeff, int len){
if(coeff == 1.0){
static void RENAME(copy)(SAMPLE *out, const SAMPLE *in, SAMPLE coeff, int len){
if(coeff == ONE){
memcpy(out, in, sizeof(SAMPLE)*len);
}else{
int i;
for(i=0; i<len; i++)
out[i] = coeff*in[i]; //FIXME better int16
out[i] = R(coeff*in[i]);
}
}

1
libswresample/swresample_internal.h
View File

@ -61,6 +61,7 @@ typedef struct SwrContext { //FIXME find unused fields
struct AVResampleContext *resample;
float matrix[SWR_CH_MAX][SWR_CH_MAX];
int16_t matrix16[SWR_CH_MAX][SWR_CH_MAX];
uint8_t matrix_ch[SWR_CH_MAX][SWR_CH_MAX+1];
//TODO callbacks for asm optims

6
tests/ref/acodec/g726
View File

@ -1,4 +1,4 @@
a76fc937faac62c5de057cd69191732a *./tests/data/acodec/g726.wav
687d70267e999fc9afba2a1ecc960f3c *./tests/data/acodec/g726.wav
24052 ./tests/data/acodec/g726.wav
124de13e6cb5af64ea8758aa49feb7fc *./tests/data/g726.acodec.out.wav
stddev: 8554.23 PSNR: 17.69 MAXDIFF:29353 bytes: 95984/ 1058400
700845e9457cae5f961fb703cb46d6a7 *./tests/data/g726.acodec.out.wav
stddev: 8553.69 PSNR: 17.69 MAXDIFF:29353 bytes: 95984/ 1058400

4
tests/ref/lavf/dv_fmt
View File

@ -1,3 +1,3 @@
6e716216d5f9e3819db8eb8796de9129 *./tests/data/lavf/lavf.dv
3a6a9163a67b729b4a6b5d972ccceb97 *./tests/data/lavf/lavf.dv
3600000 ./tests/data/lavf/lavf.dv
./tests/data/lavf/lavf.dv CRC=0x92d1e3f0
./tests/data/lavf/lavf.dv CRC=0x5ce4e5e4

4
tests/ref/lavf/mxf_d10
View File

@ -1,3 +1,3 @@
8eb67301f72f2b5860fafab422b920ad *./tests/data/lavf/lavf.mxf_d10
23177c8a72f34e243e9ffc4f6c70d3c7 *./tests/data/lavf/lavf.mxf_d10
5330989 ./tests/data/lavf/lavf.mxf_d10
./tests/data/lavf/lavf.mxf_d10 CRC=0x96c02dfd
./tests/data/lavf/lavf.mxf_d10 CRC=0x81602ff1