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avcodec/alac: fix 20-bit support 

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2016-05-05 18:13:28 +02:00
parent f1560dbb2a
commit c5d2d3dced
1 changed files with 7 additions and 0 deletions
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7
libavcodec/alac.c
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@ -391,6 +391,12 @@ static int decode_element(AVCodecContext *avctx, AVFrame *frame, int ch_index,
*outbuffer++ = alac->output_samples_buffer[ch][i];
}}
break;
case 20: {
for (ch = 0; ch < channels; ch++) {
for (i = 0; i < alac->nb_samples; i++)
alac->output_samples_buffer[ch][i] <<= 12;
}}
break;
case 24: {
for (ch = 0; ch < channels; ch++) {
for (i = 0; i < alac->nb_samples; i++)
@ -556,6 +562,7 @@ static av_cold int alac_decode_init(AVCodecContext * avctx)
switch (alac->sample_size) {
case 16: avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
break;
case 20:
case 24:
case 32: avctx->sample_fmt = AV_SAMPLE_FMT_S32P;
break;