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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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2
src/enc/cost.c
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@ -75,7 +75,7 @@ const uint16_t VP8LevelCodes[MAX_VARIABLE_LEVEL][2] = {
// fixed costs for coding levels, deduce from the coding tree.
// This is only the part that doesn't depend on the probability state.
const uint16_t VP8LevelFixedCosts[2048] = {
const uint16_t VP8LevelFixedCosts[MAX_LEVEL + 1] = {
0, 256, 256, 256, 256, 432, 618, 630,
731, 640, 640, 828, 901, 948, 1021, 1101,
1174, 1221, 1294, 1042, 1085, 1115, 1158, 1202,