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Performance improvement

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This commit is contained in:
Laurent Fasnacht 2014-06-04 14:46:08 +02:00
parent bad6d45e5f
commit 16e3a58359
1 changed files with 15 additions and 34 deletions
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49
src/picture.c
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@ -74,38 +74,28 @@ void yuv_t_free(yuv_t * yuv)
* This should be inlined, but it's defined here for now to see if Visual
* Studios LTCG will inline it.
*/
void picture_blit_pixels(const pixel *orig, pixel *dst,
unsigned width, unsigned height,
unsigned orig_stride, unsigned dst_stride)
void picture_blit_pixels(const pixel * const orig, pixel * const dst,
const unsigned width, const unsigned height,
const unsigned orig_stride, const unsigned dst_stride)
{
unsigned y, x;
unsigned y;
//There is absolutely no reason to have a width greater than the source or the destination stride.
assert(width <= orig_stride);
assert(width <= dst_stride);
for (y = 0; y < height; ++y) {
for (x = 0; x < width; ++x) {
dst[x] = orig[x];
}
// Move pointers to the next row.
orig += orig_stride;
dst += dst_stride;
memcpy(&dst[y*dst_stride], &orig[y*orig_stride], width * sizeof(pixel));
}
}
void picture_blit_coeffs(const coefficient *orig, coefficient *dst,
unsigned width, unsigned height,
unsigned orig_stride, unsigned dst_stride)
void picture_blit_coeffs(const coefficient * const orig, coefficient * const dst,
const unsigned width, const unsigned height,
const unsigned orig_stride, const unsigned dst_stride)
{
unsigned y, x;
unsigned y;
for (y = 0; y < height; ++y) {
for (x = 0; x < width; ++x) {
dst[x] = orig[x];
}
// Move pointers to the next row.
orig += orig_stride;
dst += dst_stride;
memcpy(&dst[y*dst_stride], &orig[y*orig_stride], width * sizeof(coefficient));
}
}
@ -372,15 +362,8 @@ double image_psnr(pixel *frame1, pixel *frame2, int32_t x, int32_t y)
static unsigned satd_16bit_4x4(const pixel *piOrg, const pixel *piCur)
{
int32_t k, satd = 0, diff[16], m[16], d[16];
int32_t iStrideOrg = 4, iStrideCur = 4;
for( k = 0; k < 16; k+=4 ) {
diff[k+0] = piOrg[0] - piCur[0];
diff[k+1] = piOrg[1] - piCur[1];
diff[k+2] = piOrg[2] - piCur[2];
diff[k+3] = piOrg[3] - piCur[3];
piCur += iStrideCur;
piOrg += iStrideOrg;
for( k = 0; k < 16; ++k ) {
diff[k] = piOrg[k] - piCur[k];
}
/*===== hadamard transform =====*/
@ -463,7 +446,7 @@ static unsigned satd_16bit_4x4(const pixel *piOrg, const pixel *piCur)
/**
* \brief Calculate SATD between two 8x8 blocks inside bigger arrays.
*/
static unsigned satd_16bit_8x8_general(const pixel * piOrg, const int32_t iStrideOrg,
unsigned satd_16bit_8x8_general(const pixel * piOrg, const int32_t iStrideOrg,
const pixel * piCur, const int32_t iStrideCur)
{
int32_t k, i, j, jj, sad=0;
@ -544,10 +527,8 @@ static unsigned satd_16bit_8x8_general(const pixel * piOrg, const int32_t iStrid
m2[7][i] = m1[6][i] - m1[7][i];
}
for (i = 0; i < 8; ++i) {
for (j = 0; j < 8; ++j) {
sad += abs(m2[i][j]);
}
for (i = 0; i < 64; ++i) {
sad += abs(((int*)m2)[i]);
}
sad = (sad + 2) >> 2;