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libgsm: simplify decoding by using a loop

This commit is contained in:
Justin Ruggles 2011-10-28 10:28:41 -04:00
parent 9d52f0a711
commit 480324e7ca
1 changed files with 8 additions and 7 deletions
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15
libavcodec/libgsm.c
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@ -166,8 +166,11 @@ static av_cold int libgsm_decode_close(AVCodecContext *avctx) {
static int libgsm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt) {
int i, ret;
struct gsm_state *s = avctx->priv_data;
uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int16_t *samples = data;
int out_size = avctx->frame_size * av_get_bytes_per_sample(avctx->sample_fmt);
if (*data_size < out_size) {
@ -180,13 +183,11 @@ static int libgsm_decode_frame(AVCodecContext *avctx,
return AVERROR_INVALIDDATA;
}
switch(avctx->codec_id) {
case CODEC_ID_GSM:
if(gsm_decode(avctx->priv_data,buf,data)) return -1;
break;
case CODEC_ID_GSM_MS:
if(gsm_decode(avctx->priv_data,buf,data) ||
gsm_decode(avctx->priv_data,buf+33,((int16_t*)data)+GSM_FRAME_SIZE)) return -1;
for (i = 0; i < avctx->frame_size / GSM_FRAME_SIZE; i++) {
if ((ret = gsm_decode(s, buf, samples)) < 0)
return -1;
buf += GSM_BLOCK_SIZE;
samples += GSM_FRAME_SIZE;
}
*data_size = out_size;