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/*
* originally by Andreas Öman (andoma)
* some changes by Alexander Strange
*/
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
int
main(int argc, char **argv)
{
int fd[2];
int print_pixels = 0;
int dump_blocks = 0;
int width;
int height;
int to_skip = 0;
if (argc < 6) {
fprintf(stderr, "%s [YUV file 1] [YUV file 2] width height pixelcmp|blockdump (# to skip)\n", argv[0]);
return 1;
}
width = atoi(argv[3]);
height = atoi(argv[4]);
if (argc > 6)
to_skip = atoi(argv[6]);
uint8_t *Y[2], *C[2][2];
int i, v, c, p;
int lsiz = width * height;
int csiz = width * height / 4;
int x, y;
int cwidth = width / 2;
int fr = to_skip;
int mb;
char *mberrors;
int mb_x, mb_y;
uint8_t *a;
uint8_t *b;
int die = 0;
print_pixels = strstr(argv[5], "pixelcmp") ? 1 : 0;
dump_blocks = strstr(argv[5], "blockdump") ? 1 : 0;
for(i = 0; i < 2; i++) {
Y[i] = malloc(lsiz);
C[0][i] = malloc(csiz);
C[1][i] = malloc(csiz);
fd[i] = open(argv[1 + i], O_RDONLY);
if(fd[i] == -1) {
perror("open");
exit(1);
}
fcntl(fd[i], F_NOCACHE, 1);
if (to_skip)
lseek(fd[i], to_skip * (lsiz + 2*csiz), SEEK_SET);
}
mb_x = width / 16;
mb_y = height / 16;
mberrors = malloc(mb_x * mb_y);
while(!die) {
memset(mberrors, 0, mb_x * mb_y);
printf("Loading frame %d\n", ++fr);
for(i = 0; i < 2; i++) {
v = read(fd[i], Y[i], lsiz);
if(v != lsiz) {
fprintf(stderr, "Unable to read Y from file %d, exiting\n", i + 1);
return 1;
}
}
for(c = 0; c < lsiz; c++) {
if(Y[0][c] != Y[1][c]) {
x = c % width;
y = c / width;
mb = x / 16 + (y / 16) * mb_x;
if(print_pixels)
printf("Luma diff 0x%02x != 0x%02x at pixel (%4d,%-4d) mb(%d,%d) #%d\n",
Y[0][c],
Y[1][c],
x, y,
x / 16,
y / 16,
mb);
mberrors[mb] |= 1;
}
}
/* Chroma planes */
for(p = 0; p < 2; p++) {
for(i = 0; i < 2; i++) {
v = read(fd[i], C[p][i], csiz);
if(v != csiz) {
fprintf(stderr, "Unable to read %c from file %d, exiting\n",
"UV"[p], i + 1);
return 1;
}
}
for(c = 0; c < csiz; c++) {
if(C[p][0][c] != C[p][1][c]) {
x = c % cwidth;
y = c / cwidth;
mb = x / 8 + (y / 8) * mb_x;
mberrors[mb] |= 2 << p;
if(print_pixels)
printf("c%c diff 0x%02x != 0x%02x at pixel (%4d,%-4d) "
"mb(%3d,%-3d) #%d\n",
p ? 'r' : 'b',
C[p][0][c],
C[p][1][c],
x, y,
x / 8,
y / 8,
x / 8 + y / 8 * cwidth / 8);
}
}
}
for(i = 0; i < mb_x * mb_y; i++) {
x = i % mb_x;
y = i / mb_x;
if(mberrors[i]) {
die = 1;
printf("MB (%3d,%-3d) %4d %d %c%c%c damaged\n",
x, y, i, mberrors[i],
mberrors[i] & 1 ? 'Y' : ' ',
mberrors[i] & 2 ? 'U' : ' ',
mberrors[i] & 4 ? 'V' : ' ');
if(dump_blocks) {
a = Y[0] + x * 16 + y * 16 * width;
b = Y[1] + x * 16 + y * 16 * width;
for(y = 0; y < 16; y++) {
printf("%c ", "TB"[y&1]);
for(x = 0; x < 16; x++)
printf("%02x%c", a[x + y * width],
a[x + y * width] != b[x + y * width] ? '<' : ' ');
printf("| ");
for(x = 0; x < 16; x++)
printf("%02x%c", b[x + y * width],
a[x + y * width] != b[x + y * width] ? '<' : ' ');
printf("\n");
}
}
}
}
}
return 0;
}
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