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make HistogramAdd() a pointer in dsp

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* merged the two HistogramAdd/AddEval() into a single call
  (with detection of special case when b==out)
* added a SSE2 variant
* harmonize the histogram type to 'uint32_t' instead
  of just 'int'. This has a lot of ripples on signatures.
* 1-2% faster

Change-Id: I10299ff300f36cdbca5a560df1ae4d4df149d306
This commit is contained in:
Pascal Massimino
2014-04-28 02:11:46 -07:00
committed by skal
parent c8bbb636ea
commit b3a616b356
10 changed files with 230 additions and 124 deletions
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4
src/enc/backward_references.c
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@ -405,8 +405,8 @@ static int BackwardReferencesTraceBackwards(
VP8LBackwardRefs* const refs);
static void ConvertPopulationCountTableToBitEstimates(
int num_symbols, const int population_counts[], double output[]) {
int sum = 0;
int num_symbols, const uint32_t population_counts[], double output[]) {
uint32_t sum = 0;
int nonzeros = 0;
int i;
for (i = 0; i < num_symbols; ++i) {