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vmdaudio: output 8-bit audio as AV_SAMPLE_FMT_U8.

Browse Source 
There is no need to expand to 16-bits. Just use memcpy() to copy the raw data.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 1108f8998c)
This commit is contained in:
Justin Ruggles 2011-02-23 13:11:13 -05:00 committed by Michael Niedermayer
parent f3618b014b
commit 1e898e7d35
2 changed files with 193 additions and 194 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
libavcodec/vmdav.c
View File

@ -445,7 +445,10 @@ static av_cold int vmdaudio_decode_init(AVCodecContext *avctx)
VmdAudioContext *s = avctx->priv_data;
s->avctx = avctx;
if (avctx->bits_per_coded_sample == 16)
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
else
avctx->sample_fmt = AV_SAMPLE_FMT_U8;
s->out_bps = av_get_bits_per_sample_fmt(avctx->sample_fmt) >> 3;
av_log(avctx, AV_LOG_DEBUG, "%d channels, %d bits/sample, "
@ -477,21 +480,17 @@ static void vmdaudio_decode_audio(VmdAudioContext *s, unsigned char *data,
static int vmdaudio_loadsound(VmdAudioContext *s, unsigned char *data,
const uint8_t *buf, int silent_chunks, int data_size)
{
int i;
int silent_size = s->avctx->block_align * silent_chunks * s->out_bps;
if (silent_chunks) {
memset(data, 0, silent_size);
memset(data, s->out_bps == 2 ? 0x00 : 0x80, silent_size);
data += silent_size;
}
if (s->avctx->bits_per_coded_sample == 16)
vmdaudio_decode_audio(s, data, buf, data_size, s->avctx->channels == 2);
else {
/* copy the data but convert it to signed */
for (i = 0; i < data_size; i++){
*data++ = buf[i] + 0x80;
*data++ = buf[i] + 0x80;
}
/* just copy the data */
memcpy(data, buf, data_size);
}
return silent_size + data_size * s->out_bps;

372
tests/ref/fate/sierra-vmd
View File

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