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Code Issues Releases Activity

amrnb: decode directly to the user-provided AVFrame

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This commit is contained in:
Justin Ruggles 2012-12-23 17:01:33 -05:00
parent 9b0b355e97
commit e3db34291f
1 changed files with 5 additions and 9 deletions
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14
libavcodec/amrnbdec.c
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@ -96,7 +96,6 @@
#define AMR_AGC_ALPHA 0.9
typedef struct AMRContext {
AVFrame avframe; ///< AVFrame for decoded samples
AMRNBFrame frame; ///< decoded AMR parameters (lsf coefficients, codebook indexes, etc)
uint8_t bad_frame_indicator; ///< bad frame ? 1 : 0
enum Mode cur_frame_mode;
@ -177,9 +176,6 @@ static av_cold int amrnb_decode_init(AVCodecContext *avctx)
for (i = 0; i < 4; i++)
p->prediction_error[i] = MIN_ENERGY;
avcodec_get_frame_defaults(&p->avframe);
avctx->coded_frame = &p->avframe;
return 0;
}
@ -936,6 +932,7 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
{
AMRContext *p = avctx->priv_data; // pointer to private data
AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
float *buf_out; // pointer to the output data buffer
@ -947,12 +944,12 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
const float *synth_fixed_vector; // pointer to the fixed vector that synthesis should use
/* get output buffer */
p->avframe.nb_samples = AMR_BLOCK_SIZE;
if ((ret = ff_get_buffer(avctx, &p->avframe)) < 0) {
frame->nb_samples = AMR_BLOCK_SIZE;
if ((ret = ff_get_buffer(avctx, frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
buf_out = (float *)p->avframe.data[0];
buf_out = (float *)frame->data[0];
p->cur_frame_mode = unpack_bitstream(p, buf, buf_size);
if (p->cur_frame_mode == NO_DATA) {
@ -1058,8 +1055,7 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
ff_weighted_vector_sumf(p->lsf_avg, p->lsf_avg, p->lsf_q[3],
0.84, 0.16, LP_FILTER_ORDER);
*got_frame_ptr = 1;
*(AVFrame *)data = p->avframe;
*got_frame_ptr = 1;
/* return the amount of bytes consumed if everything was OK */
return frame_sizes_nb[p->cur_frame_mode] + 1; // +7 for rounding and +8 for TOC