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author | Paul Gilbert | 2016-09-06 22:13:56 -0400 |
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committer | Paul Gilbert | 2016-09-10 10:08:14 -0400 |
commit | 9e774af4d91cb3adddfb6acc2024653620e725db (patch) | |
tree | 44eadc8766ce0f8d36e5409e323648ea39e61f54 /image/codecs/indeo/mem.cpp | |
parent | c165826316a71b378e3493a4a5fb6a6e1740bbab (diff) | |
download | scummvm-rg350-9e774af4d91cb3adddfb6acc2024653620e725db.tar.gz scummvm-rg350-9e774af4d91cb3adddfb6acc2024653620e725db.tar.bz2 scummvm-rg350-9e774af4d91cb3adddfb6acc2024653620e725db.zip |
IMAGE: Further implementation of Indeo image decoding
Diffstat (limited to 'image/codecs/indeo/mem.cpp')
-rw-r--r-- | image/codecs/indeo/mem.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/image/codecs/indeo/mem.cpp b/image/codecs/indeo/mem.cpp index 03a39cabb5..53a3236cf6 100644 --- a/image/codecs/indeo/mem.cpp +++ b/image/codecs/indeo/mem.cpp @@ -153,5 +153,29 @@ uint16 inv_bits(uint16 val, int nbits) { return res; } +uint8 av_clip_uint8(int a) { + if (a&(~0xFF)) return (-a) >> 31; + else return a; +} + +unsigned av_clip_uintp2(int a, int p) { + if (a & ~((1 << p) - 1)) return -a >> 31 & ((1 << p) - 1); + else return a; +} + + +/*------------------------------------------------------------------------*/ + +const uint8 ff_zigzag_direct[64] = { + 0, 1, 8, 16, 9, 2, 3, 10, + 17, 24, 32, 25, 18, 11, 4, 5, + 12, 19, 26, 33, 40, 48, 41, 34, + 27, 20, 13, 6, 7, 14, 21, 28, + 35, 42, 49, 56, 57, 50, 43, 36, + 29, 22, 15, 23, 30, 37, 44, 51, + 58, 59, 52, 45, 38, 31, 39, 46, + 53, 60, 61, 54, 47, 55, 62, 63 +}; + } // End of namespace Indeo } // End of namespace Image |