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fix bad saturation order in QuantizeBlock

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Saturation was done on input coeff, not quantized one.

This saturation is not absolutely needed: output of FTransformWHT
is in range [-16320, 16321]. At quality 100, max quantization steps is 8,
so the maximal range used by QuantizeBlock() is [-2040, 2040].
But there's some extra bias (mtx->bias_[] and mtx->sharpen_[]) so
it's better to leave this saturation check for now.

addresses issue #145

Change-Id: I4b14f71cdc80c46f9eaadb2a4e8e03d396879d28
This commit is contained in:
Pascal Massimino
2013-03-24 08:47:41 -07:00
parent 5f25c396ab
commit 3c8eb9a806
5 changed files with 14 additions and 11 deletions
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5
src/enc/vp8enci.h
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@ -55,8 +55,9 @@ enum { NUM_MB_SEGMENTS = 4,
NUM_BANDS = 8,
NUM_CTX = 3,
NUM_PROBAS = 11,
MAX_LF_LEVELS = 64, // Maximum loop filter level
MAX_VARIABLE_LEVEL = 67 // last (inclusive) level with variable cost
MAX_LF_LEVELS = 64, // Maximum loop filter level
MAX_VARIABLE_LEVEL = 67, // last (inclusive) level with variable cost
MAX_LEVEL = 2047 // max level (note: max codable is 2047 + 67)
};
typedef enum { // Rate-distortion optimization levels