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@@ -3310,6 +3310,13 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes) |
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if (avctx->frame_size > 1 && frame_bytes) |
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return avctx->frame_size; |
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//For WMA we currently have no other means to calculate duration thus we |
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//do it here by assuming CBR, which is true for all known cases. |
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if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) { |
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if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2) |
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return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate; |
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} |
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return 0; |
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} |
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