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/*******************************************************************************
yuv4toyuv.c
libquicktime - A library for reading and writing quicktime/avi/mp4 files.
http://libquicktime.sourceforge.net
Copyright (C) 2002 Heroine Virtual Ltd.
Copyright (C) 2002-2011 Members of the libquicktime project.
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation; either version 2.1 of the License, or (at your option)
any later version.
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
details.
You should have received a copy of the GNU Lesser General Public License along
with this library; if not, write to the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*******************************************************************************/
#include "lqt_private.h"
#include <stdlib.h>
#include <stdio.h>
static int usage(void)
{
printf("usage: yuv4toyuv <input movie> <output.yuv>\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;
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, (uint8_t*)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);
return 0;
}
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