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| author | Michael Niedermayer <michaelni@gmx.at> | 2011-03-28 01:50:36 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2011-03-28 01:50:36 +0200 |
| commit | 25d8099beb4c7eb93539f9162af1336ef7130fed (patch) | |
| tree | 4f668222da738409baf5ad8a1ee9d1c9f9004f96 /libavcodec/ac3.h | |
| parent | 57e2ded4234356c26bf92b0a627ec383ea8d288f (diff) | |
| parent | 991f3de1bb696a55f7604e4b7d53492299fe44b5 (diff) | |
| download | ffmpeg-25d8099beb4c7eb93539f9162af1336ef7130fed.tar.gz | |
Merge remote-tracking branch 'newdev/master'
* newdev/master:
ac3enc: Add codec-specific options for writing AC-3 metadata.
NOT MERGED: Remove arrozcru URL from documentation
sndio support for playback and record
Conflicts:
doc/faq.texi
doc/general.texi
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/ac3.h')
| -rw-r--r-- | libavcodec/ac3.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libavcodec/ac3.h b/libavcodec/ac3.h index 1a8cce9a6d..b4092c4be6 100644 --- a/libavcodec/ac3.h +++ b/libavcodec/ac3.h @@ -48,6 +48,17 @@ #define EXP_D25 2 #define EXP_D45 3 +/* pre-defined gain values */ +#define LEVEL_PLUS_3DB 1.4142135623730950 +#define LEVEL_PLUS_1POINT5DB 1.1892071150027209 +#define LEVEL_MINUS_1POINT5DB 0.8408964152537145 +#define LEVEL_MINUS_3DB 0.7071067811865476 +#define LEVEL_MINUS_4POINT5DB 0.5946035575013605 +#define LEVEL_MINUS_6DB 0.5000000000000000 +#define LEVEL_MINUS_9DB 0.3535533905932738 +#define LEVEL_ZERO 0.0000000000000000 +#define LEVEL_ONE 1.0000000000000000 + /** Delta bit allocation strategy */ typedef enum { DBA_REUSE = 0, |