static void randomize_loopfilter_buffers(int bidx, int lineoff, int str,
int bit_depth, int dir,
const int *E, const int *F,
const int *H, const int *I,
uint8_t *buf0, uint8_t *buf1)
{
uint32_t mask = (1 << BIT_DEPTH) - 1;
int off = dir ? lineoff : lineoff * 16;
int istride = dir ? 1 : 16;
int jstride = dir ? str : 1;
int i, j;
for (i = 0; i < 2; i++) /* flat16 */ {
int idx = off + i * istride, p0, q0;
setpx(idx, 0, q0 = rnd() & mask);
setsx(idx, -1, p0 = q0, E[bidx] >> 2);
for (j = 1; j < 8; j++) {
setsx(idx, -1 - j, p0, F[bidx]);
setsx(idx, j, q0, F[bidx]);
}
}
for (i = 2; i < 4; i++) /* flat8 */ {
int idx = off + i * istride, p0, q0;
setpx(idx, 0, q0 = rnd() & mask);
setsx(idx, -1, p0 = q0, E[bidx] >> 2);
for (j = 1; j < 4; j++) {
setsx(idx, -1 - j, p0, F[bidx]);
setsx(idx, j, q0, F[bidx]);
}
for (j = 4; j < 8; j++) {
setpx(idx, -1 - j, rnd() & mask);
setpx(idx, j, rnd() & mask);
}
}
for (i = 4; i < 6; i++) /* regular */ {
int idx = off + i * istride, p2, p1, p0, q0, q1, q2;
setpx(idx, 0, q0 = rnd() & mask);
setsx(idx, 1, q1 = q0, I[bidx]);
setsx(idx, 2, q2 = q1, I[bidx]);
setsx(idx, 3, q2, I[bidx]);
setsx(idx, -1, p0 = q0, E[bidx] >> 2);
setsx(idx, -2, p1 = p0, I[bidx]);
setsx(idx, -3, p2 = p1, I[bidx]);
setsx(idx, -4, p2, I[bidx]);
for (j = 4; j < 8; j++) {
setpx(idx, -1 - j, rnd() & mask);
setpx(idx, j, rnd() & mask);
}
}
for (i = 6; i < 8; i++) /* off */ {
int idx = off + i * istride;
for (j = 0; j < 8; j++) {
setpx(idx, -1 - j, rnd() & mask);
setpx(idx, j, rnd() & mask);
}
}
}
int main(int argc, char *argv[])
{
struct timespec now;
uint8_t *img;
int w, h;
int sz;
int x, y;
if(argc != 3) {
fprintf(stderr, "Usage: %s width height\n", argv[0]);
return 1;
}
// Seed the random number generator to get different results each time
clock_gettime(CLOCK_MONOTONIC, &now);
srand((int)now.tv_sec ^ (int)now.tv_nsec);
w = atoi(argv[1]);
h = atoi(argv[2]);
sz = size(w, h);
fprintf(stderr, "Image size: %dx%d Array size: %d\n", w, h, sz);
img = malloc(sz);
if(img == NULL) {
perror("Failed to allocate image");
return 2;
}
memset(img, 0, sz);
fprintf(stderr, "Allocated image at %p\n", img);
fprintf(stderr, "Setting some pixels\n");
for(y = 0; y < h; y++) {
for(x = 0; x < w; x++) {
setpx(img, w, x, y, rand() % 255);
}
}
fprintf(stderr, "Writing image to stdout\n");
fwrite(img, sz, 1, stdout);
free(img);
fprintf(stderr, "Goodbye.\n");
return 0;
}