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1
i am relatively new in c and c++, and i have been trying to use this as a tool in a project.
i find it difficult to open read and close two seperate video files for comparison sake. while open, i intend to calculate the diffrence in the Y, U and V parameters of the video
below i have attached part of the program to do this. even tough it compiles, i still cant get the program to effectively open the files needed for the computation ( it should be video file yuv format saved in the computer.
i would appreciate if any one can help me with this
Or alternatively if there is an easier way to open the file , save the pixels in memory and continue with the calculation, i would appreciate
int main(int argc, char *argv[]) {
FILE *out = stdout;
FILE *frame1 = stdin;
FILE *frame2 = NULL;
int i, j, c, r;
char frame1_name[MAXPATHLEN] = "(stdin)"; // truncates length at arg desired for array
char frame2_name[MAXPATHLEN] = "(none)";
char output_name[MAXPATHLEN] = "(stdout)";
int downsample = 2;
int width = 352; // considering CIF
int height = 288;
unsigned char *y2, *u2, *v2, *y, *u, *v; // yuv parameters of input and output video
int ysize, usize, vsize;
paris = argv[0];
while ((c = getopt(argc, argv, "d:i:h?x:y:o:")) != EOF) {
switch (c) {
case 'h':
case '?':
usage();
break;
case 'd':
downsample = atoi(optarg);
break;
case 'i':
if ((frame2 = fopen(optarg, "rb")) == NULL) {
fprintf(stderr, "%s: unable to open output file %s\n", paris, optarg);
exit(EXIT_FAILURE);
}
strcpy(frame2_name, optarg);
break;
case 'x':
width = atoi(optarg);
break;
case 'y':
height = atoi(optarg);
break;
case 'o':
if ((out = fopen(optarg, "wb")) == NULL) {
fprintf(stderr, "%s: unable to open output file %s\n", paris, optarg);
exit(EXIT_FAILURE);
}
strcpy(output_name, optarg);
break;
}
}
argc -= optind;
argv += optind;
if (argc > 1) {
usage();
exit(1);
}
if (frame2 == NULL) {
fprintf(stderr, "%s: original image must be given, use -i name.YUV\n", paris);
exit(EXIT_FAILURE);
}
if (argc == 1 && *argv[0] != '-')
if ((frame1 = fopen(argv[0], "rb")) == NULL) {
fprintf(stderr, "%s: unable to open input file %s\n", paris, argv[0]);
exit(1);
}
else
strcpy(frame1_name, argv[0]);
ysize = width * height;
usize = (width / downsample) * (height / downsample);
vsize = (width / downsample) * (height / downsample);
}
Edited by WingedPanther, 04 May 2008 - 04:07 PM.
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