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avfilter/hqx: unroll the pattern calculation 

Code si smaller, no speed difference.
This commit is contained in:
Clément Bœsch 2014-06-21 22:32:49 +02:00
parent dc5972f886
commit 4d8fc0e088
1 changed files with 9 additions and 15 deletions
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24
libavfilter/vf_hqx.c
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@ -401,28 +401,22 @@ static av_always_inline void hqx_filter(const ThreadData *td, int jobnr, int nb_
const int nextline = y < height - 1 ? src32_linesize : 0;
for (x = 0; x < width; x++) {
uint32_t yuv1, yuv2;
const int prevcol = x > 0 ? -1 : 0;
const int nextcol = x < width -1 ? 1 : 0;
int pattern = 0, flag = 1, k;
const uint32_t w[3*3] = {
src32[prevcol + prevline], src32[prevline], src32[prevline + nextcol],
src32[prevcol ], src32[ 0], src32[ nextcol],
src32[prevcol + nextline], src32[nextline], src32[nextline + nextcol]
};
yuv1 = rgb2yuv(r2y, w[4]);
for (k = 0; k < FF_ARRAY_ELEMS(w); k++) {
if (k == 4)
continue;
if (w[k] != w[4]) {
yuv2 = rgb2yuv(r2y, w[k]);
if (yuv_diff(yuv1, yuv2))
pattern |= flag;
}
flag <<= 1;
}
const uint32_t yuv1 = rgb2yuv(r2y, w[4]);
const int pattern = (w[4] != w[0] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[0]))) : 0) << 0
| (w[4] != w[1] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[1]))) : 0) << 1
| (w[4] != w[2] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[2]))) : 0) << 2
| (w[4] != w[3] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[3]))) : 0) << 3
| (w[4] != w[5] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[5]))) : 0) << 4
| (w[4] != w[6] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[6]))) : 0) << 5
| (w[4] != w[7] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[7]))) : 0) << 6
| (w[4] != w[8] ? (yuv_diff(yuv1, rgb2yuv(r2y, w[8]))) : 0) << 7;
if (n == 2) {
dst32[dst32_linesize*0 + 0] = hq2x_interp_1x1(r2y, pattern, w, 0,1,2,3,4,5,6,7,8); // 00