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tests/utils: don't ignore the return value of fwrite() 

Signed-off-by: Diego Biurrun <diego@biurrun.de>
This commit is contained in:
Sean McGovern 2012-04-26 14:56:24 -04:00 committed by Diego Biurrun
parent d4ac703c7f
commit be6009d32c
1 changed files with 12 additions and 3 deletions
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15
tests/utils.c
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@ -16,13 +16,22 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SCALEBITS 8
#define ONE_HALF (1 << (SCALEBITS - 1))
#define FIX(x) ((int) ((x) * (1L << SCALEBITS) + 0.5))
#define err_if(expr) do { \
if (expr) { \
fprintf(stderr, "%s\n", strerror(errno)); \
exit(1); \
} \
} while (0)
static void rgb24_to_yuv420p(unsigned char *lum, unsigned char *cb,
unsigned char *cr, unsigned char *src,
int width, int height)
@ -108,14 +117,14 @@ static void pgmyuv_save(const char *filename, int w, int h,
f = fopen(filename, "wb");
fprintf(f, "P5\n%d %d\n%d\n", w, h * 3 / 2, 255);
fwrite(lum_tab, 1, w * h, f);
err_if(fwrite(lum_tab, 1, w * h, f) != w * h);
h2 = h / 2;
w2 = w / 2;
cb = cb_tab;
cr = cr_tab;
for (i = 0; i < h2; i++) {
fwrite(cb, 1, w2, f);
fwrite(cr, 1, w2, f);
err_if(fwrite(cb, 1, w2, f) != w2);
err_if(fwrite(cr, 1, w2, f) != w2);
cb += w2;
cr += w2;
}