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| author | John Stebbins <stebbins@jetheaddev.com> | 2013-11-20 09:26:45 -0800 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2013-12-09 08:54:42 +0100 |
| commit | c9ca220ef26e36abd22085e6fa156c0dbc43bbf0 (patch) | |
| tree | 5755b4ed2e8e7783003c8e889f957db1d0072870 | |
| parent | 37a749012aaacc801fe860428417a6d7b81c103f (diff) | |
| download | ffmpeg-c9ca220ef26e36abd22085e6fa156c0dbc43bbf0.tar.gz | |
ac3dec: make drc_scale exponentially
The a52 spec suggests that "partial compression" should scale the
drc value in this manner.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
| -rw-r--r-- | libavcodec/ac3dec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/ac3dec.c b/libavcodec/ac3dec.c index 7172e6378d..e1c696269e 100644 --- a/libavcodec/ac3dec.c +++ b/libavcodec/ac3dec.c @@ -756,8 +756,8 @@ static int decode_audio_block(AC3DecodeContext *s, int blk) i = !s->channel_mode; do { if (get_bits1(gbc)) { - s->dynamic_range[i] = ((dynamic_range_tab[get_bits(gbc, 8)] - 1.0) * - s->drc_scale) + 1.0; + s->dynamic_range[i] = powf(dynamic_range_tab[get_bits(gbc, 8)], + s->drc_scale); } else if (blk == 0) { s->dynamic_range[i] = 1.0f; } |