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Add dedicated handling for blitting NxN coeffs when N is 4, 8 or 16

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This commit is contained in:
Ari Lemmetti 2016-01-13 19:27:45 +02:00
parent a2fc9920e6
commit daf39e348f
1 changed files with 54 additions and 3 deletions
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57
src/cu.c
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@ -81,9 +81,60 @@ void kvz_coefficients_blit(const coeff_t * const orig, coeff_t * const dst,
const unsigned orig_stride, const unsigned dst_stride)
{
unsigned y;
for (y = 0; y < height; ++y) {
memcpy(&dst[y*dst_stride], &orig[y*orig_stride], width * sizeof(coeff_t));
int nxn_width = (width == height) ? width : 0;
switch (nxn_width) {
case 4:
*(int64_t*)&dst[dst_stride*0] = *(int64_t*)&orig[orig_stride*0];
*(int64_t*)&dst[dst_stride*1] = *(int64_t*)&orig[orig_stride*1];
*(int64_t*)&dst[dst_stride*2] = *(int64_t*)&orig[orig_stride*2];
*(int64_t*)&dst[dst_stride*3] = *(int64_t*)&orig[orig_stride*3];
break;
case 8:
#define KVZ_COPY_ROW_8(row_num) \
*(int64_t*)&dst[dst_stride*(row_num)] = *(int64_t*)&orig[orig_stride*(row_num)]; \
*(int64_t*)&dst[dst_stride*(row_num) + 4] = *(int64_t*)&orig[orig_stride*(row_num) + 4];
KVZ_COPY_ROW_8(0);
KVZ_COPY_ROW_8(1);
KVZ_COPY_ROW_8(2);
KVZ_COPY_ROW_8(3);
KVZ_COPY_ROW_8(4);
KVZ_COPY_ROW_8(5);
KVZ_COPY_ROW_8(6);
KVZ_COPY_ROW_8(7);
break;
#undef KVZ_COPY_ROW_8
case 16:
#define KVZ_COPY_ROW_16(row_num) \
*(int64_t*)&dst[dst_stride*(row_num)] = *(int64_t*)&orig[orig_stride*(row_num)]; \
*(int64_t*)&dst[dst_stride*(row_num) + 4] = *(int64_t*)&orig[orig_stride*(row_num) + 4]; \
*(int64_t*)&dst[dst_stride*(row_num) + 8] = *(int64_t*)&orig[orig_stride*(row_num) + 8]; \
*(int64_t*)&dst[dst_stride*(row_num) + 12] = *(int64_t*)&orig[orig_stride*(row_num) + 12];
KVZ_COPY_ROW_16(0);
KVZ_COPY_ROW_16(1);
KVZ_COPY_ROW_16(2);
KVZ_COPY_ROW_16(3);
KVZ_COPY_ROW_16(4);
KVZ_COPY_ROW_16(5);
KVZ_COPY_ROW_16(6);
KVZ_COPY_ROW_16(7);
KVZ_COPY_ROW_16(8);
KVZ_COPY_ROW_16(9);
KVZ_COPY_ROW_16(10);
KVZ_COPY_ROW_16(11);
KVZ_COPY_ROW_16(12);
KVZ_COPY_ROW_16(13);
KVZ_COPY_ROW_16(14);
KVZ_COPY_ROW_16(15);
break;
#undef KVZ_COPY_ROW_16
default:
for (y = 0; y < height; ++y) {
memcpy(&dst[y*dst_stride], &orig[y*orig_stride], width * sizeof(coeff_t));
}
break;
}
}