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| author | Jean-Francois Thibert <jfthibert@google.com> | 2014-08-26 19:16:06 -0400 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-08-27 14:31:39 +0200 |
| commit | 12df9b9a151026c4b382df8852fad38165b49f95 (patch) | |
| tree | 5b2f03eae9dc3e3eb44cdb0b1cd930a5d0e03012 /libavcodec/ac3.h | |
| parent | 7a67ab5cba8ed5509be5d058fe9e5612ef39d3b0 (diff) | |
| download | ffmpeg-12df9b9a151026c4b382df8852fad38165b49f95.tar.gz | |
Improved AC3 decoder level support (heavy drc, dialnorm)
Added support for AC3 heavy dynamic range compression used
to restrict the output range and added a setting to specify
the output target level and use the dialog normalization
field to apply it in the digital domain.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/ac3.h')
| -rw-r--r-- | libavcodec/ac3.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libavcodec/ac3.h b/libavcodec/ac3.h index 542f79d711..871640b8c8 100644 --- a/libavcodec/ac3.h +++ b/libavcodec/ac3.h @@ -67,7 +67,8 @@ #define AC3_RENAME(x) x ## _fixed #define AC3_NORM(norm) (1<<24)/(norm) #define AC3_MUL(a,b) ((((int64_t) (a)) * (b))>>12) -#define AC3_RANGE(x) (x) +#define AC3_RANGE(x) (x|((x&128)<<1)) +#define AC3_HEAVY_RANGE(x) (x<<1) #define AC3_DYNAMIC_RANGE(x) (x) #define AC3_SPX_BLEND(x) (x) #define AC3_DYNAMIC_RANGE1 0 @@ -86,6 +87,7 @@ #define AC3_NORM(norm) (1.0f/(norm)) #define AC3_MUL(a,b) ((a) * (b)) #define AC3_RANGE(x) (dynamic_range_tab[(x)]) +#define AC3_HEAVY_RANGE(x) (heavy_dynamic_range_tab[(x)]) #define AC3_DYNAMIC_RANGE(x) (powf(x, s->drc_scale)) #define AC3_SPX_BLEND(x) (x)* (1.0f/32) #define AC3_DYNAMIC_RANGE1 1.0f |