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/amrwbdec.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) (limited to 'libavcodec/amrwbdec.c') diff --git a/libavcodec/amrwbdec.c b/libavcodec/amrwbdec.c index d4bb7760ef..d4aa557d07 100644 --- a/libavcodec/amrwbdec.c +++ b/libavcodec/amrwbdec.c @@ -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}, }; -- cgit v1.2.3