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| author | Rostislav Pehlivanov <atomnuker@gmail.com> | 2016-02-02 12:35:28 +0000 |
|---|---|---|
| committer | Rostislav Pehlivanov <atomnuker@gmail.com> | 2016-02-03 17:19:30 +0000 |
| commit | 3bbe7862ec8136b7325d0929882aa2fffd53044b (patch) | |
| tree | 8595ddfe36c24836d42599d4c5dc3b4c5601ed0f /libavcodec/dirac.h | |
| parent | 06278265239fe1aa6ef0f70d5e7db72ea5af844a (diff) | |
| download | ffmpeg-3bbe7862ec8136b7325d0929882aa2fffd53044b.tar.gz | |
diracdec: move the MAX_DWT_LEVELS macro to dirac.h
Used by the VC-2 encoder.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Diffstat (limited to 'libavcodec/dirac.h')
| -rw-r--r-- | libavcodec/dirac.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libavcodec/dirac.h b/libavcodec/dirac.h index cb80fdc1bf..e6d9d346d9 100644 --- a/libavcodec/dirac.h +++ b/libavcodec/dirac.h @@ -34,6 +34,17 @@ #include "avcodec.h" /** + * The spec limits the number of wavelet decompositions to 4 for both + * level 1 (VC-2) and 128 (long-gop default). + * 5 decompositions is the maximum before >16-bit buffers are needed. + * Schroedinger allows this for DD 9,7 and 13,7 wavelets only, limiting + * the others to 4 decompositions (or 3 for the fidelity filter). + * + * We use this instead of MAX_DECOMPOSITIONS to save some memory. + */ +#define MAX_DWT_LEVELS 5 + +/** * Parse code values: * * Dirac Specification -> |