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swr: handle correctly muted channel with u8 sample fmt.

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This commit is contained in:
Clément Bœsch 2011-11-29 09:48:38 +01:00 committed by Clément Bœsch
parent 9cdf048ad2
commit 81a65b82fb
1 changed files with 5 additions and 3 deletions
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8
libswresample/audioconvert.c
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@ -38,6 +38,7 @@ struct AudioConvert {
int channels;
conv_func_type *conv_f;
const int *ch_map;
uint8_t silence[8]; ///< silence input sample
};
#define CONV_FUNC_NAME(dst_fmt, src_fmt) conv_ ## src_fmt ## _to_ ## dst_fmt
@ -118,12 +119,14 @@ AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt,
if (!f)
return NULL;
ctx = av_malloc(sizeof(*ctx));
ctx = av_mallocz(sizeof(*ctx));
if (!ctx)
return NULL;
ctx->channels = channels;
ctx->conv_f = f;
ctx->ch_map = ch_map;
if (in_fmt == AV_SAMPLE_FMT_U8)
memset(ctx->silence, 0x80, sizeof(ctx->silence));
return ctx;
}
@ -135,7 +138,6 @@ void swri_audio_convert_free(AudioConvert **ctx)
int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len)
{
int ch;
const uint8_t null_input[8] = {0};
av_assert0(ctx->channels == out->ch_count);
@ -145,7 +147,7 @@ int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len
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 int os= (out->planar ? 1 :out->ch_count) *out->bps;
const uint8_t *pi= ich < 0 ? null_input : in->ch[ich];
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)