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| author | Michael Niedermayer <michaelni@gmx.at> | 2008-01-08 20:29:32 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2008-01-08 20:29:32 +0000 |
| commit | ca087dbc0d2a03ab6752bf8ed60286ed166b42df (patch) | |
| tree | 46c78585793da875667f2430e136fe467be0ff3c /doc/snow.txt | |
| parent | 806096201bce883469ae5536658856ed8fd0a0b4 (diff) | |
| download | ffmpeg-ca087dbc0d2a03ab6752bf8ed60286ed166b42df.tar.gz | |
Range coder state transition table, based on a patch by lars punkt taeuber ät web punkt de.
Originally committed as revision 11465 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'doc/snow.txt')
| -rw-r--r-- | doc/snow.txt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/doc/snow.txt b/doc/snow.txt index b75aed14b9..c3fac21740 100644 --- a/doc/snow.txt +++ b/doc/snow.txt @@ -317,6 +317,30 @@ associated probabilities are not fix but change depending on the symbol mix seen so far. +bit seen | new state +---------+-------------------------------------------- + 0 | 256 - state_transition_table[256 - old_state]; + 1 | state_transition_table[ old_state]; + +state_transition_table = { + 0, 0, 0, 0, 0, 0, 0, 0, 20, 21, 22, 23, 24, 25, 26, 27, + 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, + 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, + 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, + 74, 75, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, + 89, 90, 91, 92, 93, 94, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, +104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 114, 115, 116, 117, 118, +119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 133, +134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, +150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, +165, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174, 175, 176, 177, 178, 179, +180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 190, 191, 192, 194, 194, +195, 196, 197, 198, 199, 200, 201, 202, 202, 204, 205, 206, 207, 208, 209, 209, +210, 211, 212, 213, 215, 215, 216, 217, 218, 219, 220, 220, 222, 223, 224, 225, +226, 227, 227, 229, 229, 230, 231, 232, 234, 234, 235, 236, 237, 238, 239, 240, +241, 242, 243, 244, 245, 246, 247, 248, 248, 0, 0, 0, 0, 0, 0, 0}; + + Neighboring Blocks: =================== left and top are set to the respective blocks unless they are outside of |