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Merge "Change the rule of picking UV mode in MBAnalyzeBestUVMode()"

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This commit is contained in:
Pascal Massimino 2016-09-15 06:58:40 +00:00 committed by Gerrit Code Review
commit 053a1565c8
1 changed files with 5 additions and 0 deletions
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5
src/enc/analysis.c
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@ -330,6 +330,7 @@ static int MBAnalyzeBestIntra4Mode(VP8EncIterator* const it,
static int MBAnalyzeBestUVMode(VP8EncIterator* const it) {
int best_alpha = DEFAULT_ALPHA;
int smallest_alpha = 0;
int best_mode = 0;
const int max_mode = MAX_UV_MODE;
int mode;
@ -345,6 +346,10 @@ static int MBAnalyzeBestUVMode(VP8EncIterator* const it) {
alpha = GetAlpha(&histo);
if (IS_BETTER_ALPHA(alpha, best_alpha)) {
best_alpha = alpha;
}
// The best prediction mode tends to be the one with the smallest alpha.
if (mode == 0 || alpha < smallest_alpha) {
smallest_alpha = alpha;
best_mode = mode;
}
}