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opus: export mapping family 2 (Ambisonic) as Ambisonic layout

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Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Anton Khirnov 2019-05-28 14:54:51 +02:00 committed by James Almer
parent 886847afa0
commit e6358ec1ac
1 changed files with 19 additions and 3 deletions
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22
libavcodec/opus.c
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@ -398,8 +398,22 @@ av_cold int ff_opus_parse_extradata(AVCodecContext *avctx,
ret = AVERROR_INVALIDDATA;
goto fail;
}
layout.order = AV_CHANNEL_ORDER_UNSPEC;
layout.nb_channels = channels;
if (channels == (ambisonic_order + 1) * (ambisonic_order + 1)) {
layout.order = AV_CHANNEL_ORDER_AMBISONIC;
} else {
layout.order = AV_CHANNEL_ORDER_CUSTOM;
layout.u.map = av_calloc(channels, sizeof(*layout.u.map));
if (!layout.u.map) {
ret = AVERROR(ENOMEM);
goto fail;
}
for (i = 0; i < channels - 2; i++)
layout.u.map[i].id = AV_CHAN_AMBISONIC_BASE + i;
layout.u.map[channels - 2].id = AV_CHAN_FRONT_LEFT;
layout.u.map[channels - 1].id = AV_CHAN_FRONT_RIGHT;
}
} else {
layout.order = AV_CHANNEL_ORDER_UNSPEC;
layout.nb_channels = channels;
@ -450,8 +464,10 @@ av_cold int ff_opus_parse_extradata(AVCodecContext *avctx,
}
}
av_channel_layout_uninit(&avctx->ch_layout);
avctx->ch_layout = layout;
ret = av_channel_layout_copy(&avctx->ch_layout, &layout);
if (ret < 0)
goto fail;
s->nb_streams = streams;
s->nb_stereo_streams = stereo_streams;