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Add avcodec_decode_audio4().

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Deprecate avcodec_decode_audio3().
Implement audio support in avcodec_default_get_buffer().
Implement the new audio decoder API in all audio decoders.
This commit is contained in:
Justin Ruggles
2011-09-06 12:17:45 -04:00
parent 560f773c7d
commit 0eea212943
64 changed files with 1588 additions and 764 deletions
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27
libavcodec/amrwbdec.c
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@ -41,6 +41,7 @@
#include "amrwbdata.h"
typedef struct {
AVFrame avframe; ///< AVFrame for decoded samples
AMRWBFrame frame; ///< AMRWB parameters decoded from bitstream
enum Mode fr_cur_mode; ///< mode index of current frame
uint8_t fr_quality; ///< frame quality index (FQI)
@ -102,6 +103,9 @@ static av_cold int amrwb_decode_init(AVCodecContext *avctx)
for (i = 0; i < 4; i++)
ctx->prediction_error[i] = MIN_ENERGY;
avcodec_get_frame_defaults(&ctx->avframe);
avctx->coded_frame = &ctx->avframe;
return 0;
}
@ -1062,15 +1066,15 @@ static void update_sub_state(AMRWBContext *ctx)
LP_ORDER_16k * sizeof(float));
}
static int amrwb_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
static int amrwb_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
AMRWBContext *ctx = avctx->priv_data;
AMRWBFrame *cf = &ctx->frame;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int expected_fr_size, header_size;
float *buf_out = data;
float *buf_out;
float spare_vector[AMRWB_SFR_SIZE]; // extra stack space to hold result from anti-sparseness processing
float fixed_gain_factor; // fixed gain correction factor (gamma)
float *synth_fixed_vector; // pointer to the fixed vector that synthesis should use
@ -1080,7 +1084,15 @@ static int amrwb_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
float hb_exc[AMRWB_SFR_SIZE_16k]; // excitation for the high frequency band
float hb_samples[AMRWB_SFR_SIZE_16k]; // filtered high-band samples from synthesis
float hb_gain;
int sub, i;
int sub, i, ret;
/* get output buffer */
ctx->avframe.nb_samples = 4 * AMRWB_SFR_SIZE_16k;
if ((ret = avctx->get_buffer(avctx, &ctx->avframe)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
buf_out = (float *)ctx->avframe.data[0];
header_size = decode_mime_header(ctx, buf);
expected_fr_size = ((cf_sizes_wb[ctx->fr_cur_mode] + 7) >> 3) + 1;
@ -1088,7 +1100,7 @@ static int amrwb_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
if (buf_size < expected_fr_size) {
av_log(avctx, AV_LOG_ERROR,
"Frame too small (%d bytes). Truncated file?\n", buf_size);
*data_size = 0;
*got_frame_ptr = 0;
return buf_size;
}
@ -1219,8 +1231,8 @@ static int amrwb_decode_frame(AVCodecContext *avctx, void *data, int *data_size,
memcpy(ctx->isp_sub4_past, ctx->isp[3], LP_ORDER * sizeof(ctx->isp[3][0]));
memcpy(ctx->isf_past_final, ctx->isf_cur, LP_ORDER * sizeof(float));
/* report how many samples we got */
*data_size = 4 * AMRWB_SFR_SIZE_16k * sizeof(float);
*got_frame_ptr = 1;
*(AVFrame *)data = ctx->avframe;
return expected_fr_size;
}
@ -1232,6 +1244,7 @@ AVCodec ff_amrwb_decoder = {
.priv_data_size = sizeof(AMRWBContext),
.init = amrwb_decode_init,
.decode = amrwb_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Adaptive Multi-Rate WideBand"),
.sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_NONE},
};