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MIPS: dspr2: added optimization for function TransformColorRed

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added new function CollectColorRedTransforms to C, which calls
TransformColorRed and it is realized via pointer to function

Change-Id: Ia68d73bfcf1ca2cb443dc2825910946221f87835
This commit is contained in:
Djordje Pesut
2015-01-14 10:25:40 +01:00
parent 2cb39180cc
commit a7e7caa486
3 changed files with 68 additions and 5 deletions
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22
src/dsp/lossless.c
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@ -1067,13 +1067,10 @@ static float PredictionCostCrossColor(const int accumulated[256],
PredictionCostSpatial(counts, 3, kExpValue);
}
static float GetPredictionCostCrossColorRed(
static void CollectColorRedTransforms(
int tile_x_offset, int tile_y_offset, int all_x_max, int all_y_max,
int xsize, VP8LMultipliers prev_x, VP8LMultipliers prev_y, int green_to_red,
const int accumulated_red_histo[256], const uint32_t* const argb) {
int xsize, int green_to_red, int* histo, const uint32_t* const argb) {
int all_y;
int histo[256] = { 0 };
float cur_diff;
for (all_y = tile_y_offset; all_y < all_y_max; ++all_y) {
int ix = all_y * xsize + tile_x_offset;
int all_x;
@ -1081,6 +1078,19 @@ static float GetPredictionCostCrossColorRed(
++histo[TransformColorRed(green_to_red, argb[ix])]; // red.
}
}
}
static float GetPredictionCostCrossColorRed(
int tile_x_offset, int tile_y_offset, int all_x_max, int all_y_max,
int xsize, VP8LMultipliers prev_x, VP8LMultipliers prev_y, int green_to_red,
const int accumulated_red_histo[256], const uint32_t* const argb) {
int histo[256] = { 0 };
float cur_diff;
VP8LCollectColorRedTransforms(tile_x_offset, tile_y_offset, all_x_max,
all_y_max, xsize, green_to_red,
histo, argb);
cur_diff = PredictionCostCrossColor(accumulated_red_histo, histo);
if ((uint8_t)green_to_red == prev_x.green_to_red_) {
cur_diff -= 3; // favor keeping the areas locally similar
@ -1738,6 +1748,7 @@ VP8LConvertFunc VP8LConvertBGRAToRGB565;
VP8LConvertFunc VP8LConvertBGRAToBGR;
VP8LCollectColorBlueTransformsFunc VP8LCollectColorBlueTransforms;
VP8LCollectColorRedTransformsFunc VP8LCollectColorRedTransforms;
VP8LFastLog2SlowFunc VP8LFastLog2Slow;
VP8LFastLog2SlowFunc VP8LFastSLog2Slow;
@ -1779,6 +1790,7 @@ WEBP_TSAN_IGNORE_FUNCTION void VP8LDspInit(void) {
VP8LConvertBGRAToBGR = VP8LConvertBGRAToBGR_C;
VP8LCollectColorBlueTransforms = CollectColorBlueTransforms;
VP8LCollectColorRedTransforms = CollectColorRedTransforms;
VP8LFastLog2Slow = FastLog2Slow;
VP8LFastSLog2Slow = FastSLog2Slow;