From 6908ded20e8040a48f6e281e665aabd6b1066a9e Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 9 Jan 2013 23:20:24 +0100
Subject: [PATCH] swr: fix the noise sample type for noise shaping
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libswresample/dither.c | 19 ++++++++++---------
libswresample/swresample.c | 2 +-
libswresample/swresample_internal.h | 2 +-
3 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/libswresample/dither.c b/libswresample/dither.c
index 05c75fc0f1b..d7cb8a134a0 100644
--- a/libswresample/dither.c
+++ b/libswresample/dither.c
@@ -23,15 +23,12 @@
#include "noise_shaping_data.c"
-void swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt) {
+void swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat noise_fmt) {
double scale = s->dither.ns_scale;
#define TMP_EXTRA 2
double *tmp = av_malloc((len + TMP_EXTRA) * sizeof(double));
int i;
- out_fmt = av_get_packed_sample_fmt(out_fmt);
- in_fmt = av_get_packed_sample_fmt( in_fmt);
-
for(i=0; i<len + TMP_EXTRA; i++){
double v;
seed = seed* 1664525 + 1013904223;
@@ -63,11 +60,11 @@ void swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSa
v*= scale;
- switch(in_fmt){
- case AV_SAMPLE_FMT_S16: ((int16_t*)dst)[i] = v; break;
- case AV_SAMPLE_FMT_S32: ((int32_t*)dst)[i] = v; break;
- case AV_SAMPLE_FMT_FLT: ((float *)dst)[i] = v; break;
- case AV_SAMPLE_FMT_DBL: ((double *)dst)[i] = v; break;
+ switch(noise_fmt){
+ case AV_SAMPLE_FMT_S16P: ((int16_t*)dst)[i] = v; break;
+ case AV_SAMPLE_FMT_S32P: ((int32_t*)dst)[i] = v; break;
+ case AV_SAMPLE_FMT_FLTP: ((float *)dst)[i] = v; break;
+ case AV_SAMPLE_FMT_DBLP: ((double *)dst)[i] = v; break;
default: av_assert0(0);
}
}
@@ -117,6 +114,10 @@ int swri_dither_init(SwrContext *s, enum AVSampleFormat out_fmt, enum AVSampleFo
}
s->dither.noise = s->preout;
+ if (s->dither.method > SWR_DITHER_NS) {
+ s->dither.noise.bps = 4;
+ s->dither.noise.fmt = AV_SAMPLE_FMT_FLTP;
+ }
return 0;
}
diff --git a/libswresample/swresample.c b/libswresample/swresample.c
index 5e0e4aa403e..b3114194098 100644
--- a/libswresample/swresample.c
+++ b/libswresample/swresample.c
@@ -654,7 +654,7 @@ static int swr_convert_internal(struct SwrContext *s, AudioData *out, int out_co
return ret;
if(ret)
for(ch=0; ch<s->dither.noise.ch_count; ch++)
- swri_get_dither(s, s->dither.noise.ch[ch], s->dither.noise.count, 12345678913579<<ch, s->out_sample_fmt, s->int_sample_fmt);
+ swri_get_dither(s, s->dither.noise.ch[ch], s->dither.noise.count, 12345678913579<<ch, s->dither.noise.fmt);
av_assert0(s->dither.noise.ch_count == preout->ch_count);
if(s->dither.dither_pos + out_count > s->dither.noise.count)
diff --git a/libswresample/swresample_internal.h b/libswresample/swresample_internal.h
index 1b0167cc081..5236098a405 100644
--- a/libswresample/swresample_internal.h
+++ b/libswresample/swresample_internal.h
@@ -176,7 +176,7 @@ void swri_rematrix_free(SwrContext *s);
int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mustcopy);
void swri_rematrix_init_x86(struct SwrContext *s);
-void swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt);
+void swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat noise_fmt);
int swri_dither_init(SwrContext *s, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt);
void swri_audio_convert_init_arm(struct AudioConvert *ac,
--
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