#include "quicktime.h"
int usage(void)
{
printf("usage: yuv4toyuv \n");
printf(" Write a YUV4 encoded movie as a planar YUV 4:2:0 file.\n");
exit(1);
}
int main(int argc, char *argv[])
{
quicktime_t *file;
FILE *output;
int64_t length, width, height, bytes;
char *buffer_in, *y_out, *u_out, *v_out;
char *y_out1, *y_out2, *u_out1, *v_out1;
char *input_row;
int i, j, k, l, m;
if(argc < 3)
{
usage();
}
if(!(file = quicktime_open(argv[1], 1, 0)))
{
printf("Open input failed\n");
exit(1);
}
if(!(output = fopen(argv[2], "wb")))
{
perror("Open output failed");
exit(1);
}
if(!quicktime_video_tracks(file))
{
printf("No video tracks.\n");
exit(1);
}
length = quicktime_video_length(file, 0);
width = quicktime_video_width(file, 0);
height = quicktime_video_height(file, 0);
bytes = width * height + width * height / 2;
buffer_in = calloc(1, bytes);
y_out = calloc(1, width * height);
u_out = calloc(1, width * height / 4);
v_out = calloc(1, width * height / 4);
for(i = 0; i < length; i++)
{
quicktime_set_video_position(file, i, 0);
quicktime_read_data(file, buffer_in, bytes);
u_out1 = u_out;
v_out1 = v_out;
for(j = 0; j < height; j += 2)
{
// Get 2 rows
input_row = &buffer_in[j * width + j * width / 2];
y_out1 = y_out + j * width;
y_out2 = y_out1 + width;
for(k = 0; k < width / 2; k++)
{
*u_out1++ = (int)*input_row++ + 0x80;
*v_out1++ = (int)*input_row++ + 0x80;
*y_out1++ = *input_row++;
*y_out1++ = *input_row++;
*y_out2++ = *input_row++;
*y_out2++ = *input_row++;
}
}
if(!fwrite(y_out, width * height, 1, output))
{
perror("write failed");
fclose(output);
exit(1);
}
if(!fwrite(u_out, width * height / 4, 1, output))
{
perror("write failed");
fclose(output);
exit(1);
}
if(!fwrite(v_out, width * height / 4, 1, output))
{
perror("write failed");
fclose(output);
exit(1);
}
}
quicktime_close(file);
}