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introduce FTransform2 to perform two transforms at a time.

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FTransform goes from ~12.0% to 11.5% total CPU time.

Change-Id: Ibcb23155324f4fd8b235563f80668531c781f624
This commit is contained in:
skal
2015-05-18 21:06:15 -07:00
parent aa6065aedd
commit ac76801159
4 changed files with 185 additions and 119 deletions
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8
src/enc/quant.c
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@ -723,8 +723,8 @@ static int ReconstructIntra16(VP8EncIterator* const it,
int n;
int16_t tmp[16][16], dc_tmp[16];
for (n = 0; n < 16; ++n) {
VP8FTransform(src + VP8Scan[n], ref + VP8Scan[n], tmp[n]);
for (n = 0; n < 16; n += 2) {
VP8FTransform2(src + VP8Scan[n], ref + VP8Scan[n], tmp[n]);
}
VP8FTransformWHT(tmp[0], dc_tmp);
nz |= VP8EncQuantizeBlockWHT(dc_tmp, rd->y_dc_levels, &dqm->y2_) << 24;
@ -797,8 +797,8 @@ static int ReconstructUV(VP8EncIterator* const it, VP8ModeScore* const rd,
int n;
int16_t tmp[8][16];
for (n = 0; n < 8; ++n) {
VP8FTransform(src + VP8ScanUV[n], ref + VP8ScanUV[n], tmp[n]);
for (n = 0; n < 8; n += 2) {
VP8FTransform2(src + VP8ScanUV[n], ref + VP8ScanUV[n], tmp[n]);
}
if (DO_TRELLIS_UV && it->do_trellis_) {
int ch, x, y;