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remove few TODO:

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* 256 -> RD_DISTO_MULT
  * don't use TDisto for UV mode picking

Change-Id: I243148c716fe688b5c1b1fb9b7a6e58d0b5e6835
This commit is contained in:
Pascal Massimino 2015-12-15 22:52:12 -08:00
parent 791896455a
commit 9cf1cc2bd6
1 changed files with 5 additions and 4 deletions
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9
src/enc/quant.c
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@ -41,6 +41,8 @@
#define MULT_8B(a, b) (((a) * (b) + 128) >> 8)
#define RD_DISTO_MULT 256 // distortion multiplier (equivalent of lambda)
// #define DEBUG_BLOCK
//------------------------------------------------------------------------------
@ -535,13 +537,12 @@ typedef struct {
#define SCORE_STATE(n, l) (score_states[n][(l) + MIN_DELTA])
static WEBP_INLINE void SetRDScore(int lambda, VP8ModeScore* const rd) {
// TODO: incorporate the "* 256" in the tables?
rd->score = (rd->R + rd->H) * lambda + 256 * (rd->D + rd->SD);
rd->score = (rd->R + rd->H) * lambda + RD_DISTO_MULT * (rd->D + rd->SD);
}
static WEBP_INLINE score_t RDScoreTrellis(int lambda, score_t rate,
score_t distortion) {
return rate * lambda + 256 * distortion;
return rate * lambda + RD_DISTO_MULT * distortion;
}
static int TrellisQuantizeBlock(const VP8Encoder* const enc,
@ -1050,7 +1051,7 @@ static void PickBestUV(VP8EncIterator* const it, VP8ModeScore* const rd) {
// Compute RD-score
rd_uv.D = VP8SSE16x8(src, tmp_dst);
rd_uv.SD = 0; // TODO: should we call TDisto? it tends to flatten areas.
rd_uv.SD = 0; // not calling TDisto here: it tends to flatten areas.
rd_uv.H = VP8FixedCostsUV[mode];
rd_uv.R = VP8GetCostUV(it, &rd_uv);
if (mode > 0 && IsFlat(rd_uv.uv_levels[0], kNumBlocks, FLATNESS_LIMIT_UV)) {