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| author | Michael Niedermayer <michaelni@gmx.at> | 2012-04-10 13:38:10 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2012-04-10 13:48:55 +0200 |
| commit | 24ab1abfb6d55bf330022df4b10d7aec80b3f116 (patch) | |
| tree | 0757a1d3dd908983dc674e4050c9b7da1a195a2d /libswresample/resample.c | |
| parent | 3d9338b1c23f1909527a7a7a8d6c4de9da3e7f8d (diff) | |
| download | ffmpeg-24ab1abfb6d55bf330022df4b10d7aec80b3f116.tar.gz | |
resample: support double precission resampling
This commit is dedicated to the audiophiles who can hear it when a
needle is dropped on the moon.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libswresample/resample.c')
| -rw-r--r-- | libswresample/resample.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libswresample/resample.c b/libswresample/resample.c index d158e768bc..cdd00bacf9 100644 --- a/libswresample/resample.c +++ b/libswresample/resample.c @@ -143,6 +143,10 @@ static int build_filter(ResampleContext *c, void *filter, double factor, int tap for(i=0;i<tap_count;i++) ((float*)filter)[ph * tap_count + i] = tab[i] * scale / norm; break; + case AV_SAMPLE_FMT_DBL: + for(i=0;i<tap_count;i++) + ((double*)filter)[ph * tap_count + i] = tab[i] * scale / norm; + break; } } #if 0 @@ -211,6 +215,10 @@ ResampleContext *swri_resample_init(ResampleContext *c, int out_rate, int in_rat c->felem_size = 4; c->filter_shift = 0; break; + case AV_SAMPLE_FMT_DBL: + c->felem_size = 8; + c->filter_shift = 0; + break; default: av_log(NULL, AV_LOG_ERROR, "Unsupported sample format\n"); return NULL; @@ -330,6 +338,26 @@ int swr_set_compensation(struct SwrContext *s, int sample_delta, int compensatio #define OUT(d, v) d = v #include "resample_template.c" +#undef RENAME +#undef FELEM +#undef FELEM2 +#undef DELEM +#undef FELEML +#undef OUT +#undef FELEM_MIN +#undef FELEM_MAX +#undef FILTER_SHIFT + + +#define RENAME(N) N ## _double +#define FILTER_SHIFT 0 +#define DELEM double +#define FELEM double +#define FELEM2 double +#define FELEML double +#define OUT(d, v) d = v +#include "resample_template.c" + int swri_multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, AudioData *src, int src_size, int *consumed){ int i, ret= -1; @@ -338,6 +366,7 @@ int swri_multiple_resample(ResampleContext *c, AudioData *dst, int dst_size, Aud if(c->format == AV_SAMPLE_FMT_S16) ret= swri_resample_int16(c, (int16_t*)dst->ch[i], (const int16_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count); if(c->format == AV_SAMPLE_FMT_S32) ret= swri_resample_int32(c, (int32_t*)dst->ch[i], (const int32_t*)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count); if(c->format == AV_SAMPLE_FMT_FLT) ret= swri_resample_float(c, (float *)dst->ch[i], (const float *)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count); + if(c->format == AV_SAMPLE_FMT_DBL) ret= swri_resample_double(c,(double *)dst->ch[i], (const double *)src->ch[i], consumed, src_size, dst_size, i+1==dst->ch_count); } return ret; |