diff options
| author | Rostislav Pehlivanov <atomnuker@gmail.com> | 2017-12-04 06:36:42 +0000 |
|---|---|---|
| committer | Rostislav Pehlivanov <atomnuker@gmail.com> | 2017-12-04 07:28:45 +0000 |
| commit | 1b8649c2ce95da0a12d90f6acf7171b4fc6580db (patch) | |
| tree | 40eeb3616dea4963f080594b996cd906524f95ef /libavcodec/opusdec.c | |
| parent | fe05f93013c4a3616926fa9370be2d9c93a94659 (diff) | |
| download | ffmpeg-1b8649c2ce95da0a12d90f6acf7171b4fc6580db.tar.gz | |
opus: add an option to toggle intensity stereo phase inversion
Due to a somewhat high volume of complains, phase inversion has
been made optional with RFC8251. This allows for better bass
frequency response when partially downmixing to play on systems
with an LFE speaker.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Diffstat (limited to 'libavcodec/opusdec.c')
| -rw-r--r-- | libavcodec/opusdec.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/libavcodec/opusdec.c b/libavcodec/opusdec.c index 5a7ba9dbb4..03086dea99 100644 --- a/libavcodec/opusdec.c +++ b/libavcodec/opusdec.c @@ -687,7 +687,7 @@ static av_cold int opus_decode_init(AVCodecContext *avctx) if (ret < 0) goto fail; - ret = ff_celt_init(avctx, &s->celt, s->output_channels); + ret = ff_celt_init(avctx, &s->celt, s->output_channels, c->apply_phase_inv); if (ret < 0) goto fail; @@ -712,9 +712,24 @@ fail: return ret; } +#define OFFSET(x) offsetof(OpusContext, x) +#define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM +static const AVOption opus_options[] = { + { "apply_phase_inv", "Apply intensity stereo phase inversion", OFFSET(apply_phase_inv), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, AD }, + { NULL }, +}; + +static const AVClass opus_class = { + .class_name = "Opus Decoder", + .item_name = av_default_item_name, + .option = opus_options, + .version = LIBAVUTIL_VERSION_INT, +}; + AVCodec ff_opus_decoder = { .name = "opus", .long_name = NULL_IF_CONFIG_SMALL("Opus"), + .priv_class = &opus_class, .type = AVMEDIA_TYPE_AUDIO, .id = AV_CODEC_ID_OPUS, .priv_data_size = sizeof(OpusContext), |