diff options
Diffstat (limited to 'libavcodec/aacdec.c')
| -rw-r--r-- | libavcodec/aacdec.c | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c index 61e33656c7..7564714e31 100644 --- a/libavcodec/aacdec.c +++ b/libavcodec/aacdec.c @@ -186,7 +186,7 @@ static av_cold int che_configure(AACContext *ac, if (che_pos[type][id]) { if (!ac->che[type][id] && !(ac->che[type][id] = av_mallocz(sizeof(ChannelElement)))) return AVERROR(ENOMEM); - ff_aac_sbr_ctx_init(&ac->che[type][id]->sbr); + ff_aac_sbr_ctx_init(ac, &ac->che[type][id]->sbr); if (type != TYPE_CCE) { ac->output_data[(*channels)++] = ac->che[type][id]->ch[0].ret; if (type == TYPE_CPE || @@ -550,6 +550,7 @@ static void reset_predictor_group(PredictorState *ps, int group_num) static av_cold int aac_decode_init(AVCodecContext *avctx) { AACContext *ac = avctx->priv_data; + float output_scale_factor; ac->avctx = avctx; ac->m4ac.sample_rate = avctx->sample_rate; @@ -561,8 +562,13 @@ static av_cold int aac_decode_init(AVCodecContext *avctx) return -1; } - avctx->sample_fmt = avctx->request_sample_fmt == AV_SAMPLE_FMT_FLT ? - AV_SAMPLE_FMT_FLT : AV_SAMPLE_FMT_S16; + if (avctx->request_sample_fmt == AV_SAMPLE_FMT_FLT) { + avctx->sample_fmt = AV_SAMPLE_FMT_FLT; + output_scale_factor = 1.0 / 32768.0; + } else { + avctx->sample_fmt = AV_SAMPLE_FMT_S16; + output_scale_factor = 1.0; + } AAC_INIT_VLC_STATIC( 0, 304); AAC_INIT_VLC_STATIC( 1, 270); @@ -590,9 +596,9 @@ static av_cold int aac_decode_init(AVCodecContext *avctx) ff_aac_scalefactor_code, sizeof(ff_aac_scalefactor_code[0]), sizeof(ff_aac_scalefactor_code[0]), 352); - ff_mdct_init(&ac->mdct, 11, 1, 1.0/1024.0); - ff_mdct_init(&ac->mdct_small, 8, 1, 1.0/128.0); - ff_mdct_init(&ac->mdct_ltp, 11, 0, -2.0); + ff_mdct_init(&ac->mdct, 11, 1, output_scale_factor/1024.0); + ff_mdct_init(&ac->mdct_small, 8, 1, output_scale_factor/128.0); + ff_mdct_init(&ac->mdct_ltp, 11, 0, -2.0/output_scale_factor); // window initialization ff_kbd_window_init(ff_aac_kbd_long_1024, 4.0, 1024); ff_kbd_window_init(ff_aac_kbd_short_128, 6.0, 128); @@ -2174,8 +2180,8 @@ static int aac_decode_frame_int(AVCodecContext *avctx, void *data, avctx->frame_size = samples; } - data_size_tmp = samples * avctx->channels; - data_size_tmp *= avctx->sample_fmt == AV_SAMPLE_FMT_FLT ? sizeof(float) : sizeof(int16_t); + data_size_tmp = samples * avctx->channels * + (av_get_bits_per_sample_fmt(avctx->sample_fmt) / 8); if (*data_size < data_size_tmp) { av_log(avctx, AV_LOG_ERROR, "Output buffer too small (%d) or trying to output too many samples (%d) for this frame.\n", @@ -2185,10 +2191,12 @@ static int aac_decode_frame_int(AVCodecContext *avctx, void *data, *data_size = data_size_tmp; if (samples) { - if (avctx->sample_fmt == AV_SAMPLE_FMT_FLT) { - float_interleave(data, (const float **)ac->output_data, samples, avctx->channels); - } else - ac->fmt_conv.float_to_int16_interleave(data, (const float **)ac->output_data, samples, avctx->channels); + if (avctx->sample_fmt == AV_SAMPLE_FMT_FLT) + ac->fmt_conv.float_interleave(data, (const float **)ac->output_data, + samples, avctx->channels); + else + ac->fmt_conv.float_to_int16_interleave(data, (const float **)ac->output_data, + samples, avctx->channels); } if (ac->output_configured) @@ -2507,7 +2515,7 @@ AVCodec ff_aac_decoder = { aac_decode_frame, .long_name = NULL_IF_CONFIG_SMALL("Advanced Audio Coding"), .sample_fmts = (const enum AVSampleFormat[]) { - AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_NONE + AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }, .channel_layouts = aac_channel_layout, }; @@ -2527,7 +2535,7 @@ AVCodec ff_aac_latm_decoder = { .decode = latm_decode_frame, .long_name = NULL_IF_CONFIG_SMALL("AAC LATM (Advanced Audio Codec LATM syntax)"), .sample_fmts = (const enum AVSampleFormat[]) { - AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_NONE + AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE }, .channel_layouts = aac_channel_layout, }; |