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Code Issues Releases Activity

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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26
libavcodec/atrac1.c
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@@ -72,6 +72,7 @@ typedef struct {
* The atrac1 context, holds all needed parameters for decoding
*/
typedef struct {
AVFrame frame;
AT1SUCtx SUs[AT1_MAX_CHANNELS]; ///< channel sound unit
DECLARE_ALIGNED(32, float, spec)[AT1_SU_SAMPLES]; ///< the mdct spectrum buffer
@@ -273,14 +274,14 @@ static void at1_subband_synthesis(AT1Ctx *q, AT1SUCtx* su, float *pOut)
static int atrac1_decode_frame(AVCodecContext *avctx, void *data,
int *data_size, AVPacket *avpkt)
int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
AT1Ctx *q = avctx->priv_data;
int ch, ret, out_size;
int ch, ret;
GetBitContext gb;
float* samples = data;
float *samples;
if (buf_size < 212 * q->channels) {
@@ -288,12 +289,13 @@ static int atrac1_decode_frame(AVCodecContext *avctx, void *data,
return AVERROR_INVALIDDATA;
}
out_size = q->channels * AT1_SU_SAMPLES *
av_get_bytes_per_sample(avctx->sample_fmt);
if (*data_size < out_size) {
av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
return AVERROR(EINVAL);
/* get output buffer */
q->frame.nb_samples = AT1_SU_SAMPLES;
if ((ret = avctx->get_buffer(avctx, &q->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
samples = (float *)q->frame.data[0];
for (ch = 0; ch < q->channels; ch++) {
AT1SUCtx* su = &q->SUs[ch];
@@ -321,7 +323,9 @@ static int atrac1_decode_frame(AVCodecContext *avctx, void *data,
AT1_SU_SAMPLES, 2);
}
*data_size = out_size;
*got_frame_ptr = 1;
*(AVFrame *)data = q->frame;
return avctx->block_align;
}
@@ -389,6 +393,9 @@ static av_cold int atrac1_decode_init(AVCodecContext *avctx)
q->SUs[1].spectrum[0] = q->SUs[1].spec1;
q->SUs[1].spectrum[1] = q->SUs[1].spec2;
avcodec_get_frame_defaults(&q->frame);
avctx->coded_frame = &q->frame;
return 0;
}
@@ -401,5 +408,6 @@ AVCodec ff_atrac1_decoder = {
.init = atrac1_decode_init,
.close = atrac1_decode_end,
.decode = atrac1_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Atrac 1 (Adaptive TRansform Acoustic Coding)"),
};