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alac: add 32-bit decoding support

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This commit is contained in:
Justin Ruggles 2012-07-09 14:36:03 -04:00
parent 6cda74c155
commit 6482bd8831
1 changed files with 14 additions and 1 deletions
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15
libavcodec/alac.c
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@ -424,6 +424,18 @@ static int alac_decode_frame(AVCodecContext *avctx, void *data,
*outbuffer++ = alac->output_samples_buffer[1][i] << 8; *outbuffer++ = alac->output_samples_buffer[1][i] << 8;
}} }}
break; break;
case 32:
if (channels == 2) {
int32_t *outbuffer = (int32_t *)alac->frame.data[0];
for (i = 0; i < alac->nb_samples; i++) {
*outbuffer++ = alac->output_samples_buffer[0][i];
*outbuffer++ = alac->output_samples_buffer[1][i];
}
} else {
memcpy(alac->frame.data[0], alac->output_samples_buffer[0],
alac->nb_samples * sizeof(*alac->output_samples_buffer[0]));
}
break;
} }
if (avpkt->size * 8 - get_bits_count(&alac->gb) > 8) if (avpkt->size * 8 - get_bits_count(&alac->gb) > 8)
@ -520,7 +532,8 @@ static av_cold int alac_decode_init(AVCodecContext * avctx)
switch (alac->sample_size) { switch (alac->sample_size) {
case 16: avctx->sample_fmt = AV_SAMPLE_FMT_S16; case 16: avctx->sample_fmt = AV_SAMPLE_FMT_S16;
break; break;
case 24: avctx->sample_fmt = AV_SAMPLE_FMT_S32; case 24:
case 32: avctx->sample_fmt = AV_SAMPLE_FMT_S32;
break; break;
default: av_log_ask_for_sample(avctx, "Sample depth %d is not supported.\n", default: av_log_ask_for_sample(avctx, "Sample depth %d is not supported.\n",
alac->sample_size); alac->sample_size);