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adpcm: decode directly to the user-provided AVFrame

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This commit is contained in:
Justin Ruggles 2012-12-23 16:43:07 -05:00
parent 55d2e12aef
commit e57daa876b
1 changed files with 9 additions and 13 deletions
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22
libavcodec/adpcm.c
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@ -85,7 +85,6 @@ static const int swf_index_tables[4][16] = {
/* end of tables */
typedef struct ADPCMDecodeContext {
AVFrame frame;
ADPCMChannelStatus status[6];
int vqa_version; /**< VQA version. Used for ADPCM_IMA_WS */
} ADPCMDecodeContext;
@ -156,9 +155,6 @@ static av_cold int adpcm_decode_init(AVCodecContext * avctx)
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
}
avcodec_get_frame_defaults(&c->frame);
avctx->coded_frame = &c->frame;
return 0;
}
@ -591,6 +587,7 @@ static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
ADPCMDecodeContext *c = avctx->priv_data;
@ -611,20 +608,20 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
/* get output buffer */
c->frame.nb_samples = nb_samples;
if ((ret = ff_get_buffer(avctx, &c->frame)) < 0) {
frame->nb_samples = nb_samples;
if ((ret = ff_get_buffer(avctx, frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
samples = (short *)c->frame.data[0];
samples_p = (int16_t **)c->frame.extended_data;
samples = (short *)frame->data[0];
samples_p = (int16_t **)frame->extended_data;
/* use coded_samples when applicable */
/* it is always <= nb_samples, so the output buffer will be large enough */
if (coded_samples) {
if (coded_samples != nb_samples)
av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
c->frame.nb_samples = nb_samples = coded_samples;
frame->nb_samples = nb_samples = coded_samples;
}
st = avctx->channels == 2 ? 1 : 0;
@ -710,7 +707,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
for (i = 0; i < avctx->channels; i++) {
samples = (int16_t *)c->frame.data[i];
samples = (int16_t *)frame->data[i];
cs = &c->status[i];
for (n = nb_samples >> 1; n > 0; n--) {
int v = bytestream2_get_byteu(&gb);
@ -1097,7 +1094,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
}
}
c->frame.nb_samples = count * 28;
frame->nb_samples = count * 28;
bytestream2_seek(&gb, 0, SEEK_END);
break;
}
@ -1278,8 +1275,7 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
return -1;
}
*got_frame_ptr = 1;
*(AVFrame *)data = c->frame;
*got_frame_ptr = 1;
return bytestream2_tell(&gb);
}