From 0eea212943544d40f99b05571aa7159d78667154 Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Tue, 6 Sep 2011 12:17:45 -0400 Subject: Add avcodec_decode_audio4(). Deprecate avcodec_decode_audio3(). Implement audio support in avcodec_default_get_buffer(). Implement the new audio decoder API in all audio decoders. --- libavcodec/amrnbdec.c | 25 +++++++++++++++++++------ 1 file changed, 19 insertions(+), 6 deletions(-) (limited to 'libavcodec/amrnbdec.c') diff --git a/libavcodec/amrnbdec.c b/libavcodec/amrnbdec.c index 501b137780..b594af760a 100644 --- a/libavcodec/amrnbdec.c +++ b/libavcodec/amrnbdec.c @@ -95,6 +95,7 @@ #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; @@ -167,6 +168,9 @@ 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; } @@ -919,21 +923,29 @@ static void postfilter(AMRContext *p, float *lpc, float *buf_out) /// @} -static int amrnb_decode_frame(AVCodecContext *avctx, void *data, int *data_size, - AVPacket *avpkt) +static int amrnb_decode_frame(AVCodecContext *avctx, void *data, + int *got_frame_ptr, AVPacket *avpkt) { AMRContext *p = avctx->priv_data; // pointer to private data const uint8_t *buf = avpkt->data; int buf_size = avpkt->size; - float *buf_out = data; // pointer to the output data buffer - int i, subframe; + float *buf_out; // pointer to the output data buffer + int i, subframe, ret; float fixed_gain_factor; AMRFixed fixed_sparse = {0}; // fixed vector up to anti-sparseness processing float spare_vector[AMR_SUBFRAME_SIZE]; // extra stack space to hold result from anti-sparseness processing float synth_fixed_gain; // the fixed gain that synthesis should use 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 = avctx->get_buffer(avctx, &p->avframe)) < 0) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + return ret; + } + buf_out = (float *)p->avframe.data[0]; + p->cur_frame_mode = unpack_bitstream(p, buf, buf_size); if (p->cur_frame_mode == MODE_DTX) { av_log_missing_feature(avctx, "dtx mode", 1); @@ -1028,8 +1040,8 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data, int *data_size, ff_weighted_vector_sumf(p->lsf_avg, p->lsf_avg, p->lsf_q[3], 0.84, 0.16, LP_FILTER_ORDER); - /* report how many samples we got */ - *data_size = AMR_BLOCK_SIZE * sizeof(float); + *got_frame_ptr = 1; + *(AVFrame *)data = p->avframe; /* 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 @@ -1043,6 +1055,7 @@ AVCodec ff_amrnb_decoder = { .priv_data_size = sizeof(AMRContext), .init = amrnb_decode_init, .decode = amrnb_decode_frame, + .capabilities = CODEC_CAP_DR1, .long_name = NULL_IF_CONFIG_SMALL("Adaptive Multi-Rate NarrowBand"), .sample_fmts = (const enum AVSampleFormat[]){AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_NONE}, }; -- cgit v1.2.3