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dca: set AVCodecContext frame_size for DTS audio

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Set the frame size when decoding DTS audio.

This has the side effect of fixing the computation of timestamps for DTS-HD in compute_pkt_fields.  Since frame_size is
not currently set, the duration of a frame is being guessed based on the streams bitrate.  But for DTS-HD, the bitrate
currently used is the rate of the DTS core which is much different than the whole DTS-HD stream and leads to a wildly
inaccurate frame duration estimate.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit 49c7006c7e815d4330247624a9e6ba30e288cd02)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
(cherry picked from commit 06318968853ff8c628bbc75fb126483c08f22fd9)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
This commit is contained in:
John Stebbins 2011-07-04 09:55:19 -07:00 committed by Reinhard Tartler
parent 572e94bc51
commit 84fce203bd
1 changed files with 1 additions and 0 deletions
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libavcodec/dca.c
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@ -1224,6 +1224,7 @@ static int dca_decode_frame(AVCodecContext * avctx,
//set AVCodec values with parsed data //set AVCodec values with parsed data
avctx->sample_rate = s->sample_rate; avctx->sample_rate = s->sample_rate;
avctx->bit_rate = s->bit_rate; avctx->bit_rate = s->bit_rate;
avctx->frame_size = s->sample_blocks * 32;
channels = s->prim_channels + !!s->lfe; channels = s->prim_channels + !!s->lfe;