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add comment about the kLevelsFromDelta[][] LUT generation

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Change-Id: Id1a91932bf05aeee421761667af351ef2200c334
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skal 2013-10-30 23:33:38 +01:00 committed by James Zern
parent 1e898619cb
commit 5935259cd0
1 changed files with 4 additions and 1 deletions
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5
src/enc/filter.c
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@ -18,8 +18,11 @@
extern "C" {
#endif
// this table gives, for a given sharpness, the filtering strength to be
// This table gives, for a given sharpness, the filtering strength to be
// used (at least) in order to filter a given edge step delta.
// This is constructed by brute force inspection: for all delta, we iterate
// over all possible filtering strength / thresh until needs_filter() returns
// true.
#define MAX_DELTA_SIZE 64
static const uint8_t kLevelsFromDelta[8][MAX_DELTA_SIZE] = {
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,