mirror of https://git.ffmpeg.org/ffmpeg.git
vorbisdec: add a flush() function
clear MDCT overlap buffer and reset previous window mode when seeking
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@ -1698,6 +1698,17 @@ static av_cold int vorbis_decode_close(AVCodecContext *avccontext)
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return 0;
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}
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static av_cold void vorbis_decode_flush(AVCodecContext *avccontext)
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{
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vorbis_context *vc = avccontext->priv_data;
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if (vc->saved) {
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memset(vc->saved, 0, (vc->blocksize[1] / 4) * vc->audio_channels *
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sizeof(*vc->saved));
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}
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vc->previous_window = 0;
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}
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AVCodec ff_vorbis_decoder = {
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.name = "vorbis",
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.type = AVMEDIA_TYPE_AUDIO,
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@ -1706,6 +1717,7 @@ AVCodec ff_vorbis_decoder = {
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.init = vorbis_decode_init,
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.close = vorbis_decode_close,
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.decode = vorbis_decode_frame,
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.flush = vorbis_decode_flush,
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.capabilities = CODEC_CAP_DR1,
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.long_name = NULL_IF_CONFIG_SMALL("Vorbis"),
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.channel_layouts = ff_vorbis_channel_layouts,
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