return image;
}
-#define CLAMP(x,a,b) x < a ? a : (x > b ? b : x)
+#define CLAMP(x,a,b) ((x) < (a) ? (a) : ((x) > (b) ? (b) : (x)))
static INLINE int clamp(const int value, const int prec, const int sgnd)
{
nbytes = 4;
}
- for (i = 0; i < w * h; i++) {
- /* FIXME: clamp func is being called within a loop */
- const int val = clamp(image->comps[compno].data[i],
- (int)comp->prec, (int)comp->sgnd);
-
- for (j = nbytes - 1; j >= 0; j--) {
- int v = (int)(val >> (j * 8));
- unsigned char byte = (unsigned char)v;
- res = fwrite(&byte, 1, 1, fdest);
-
- if (res < 1) {
- fprintf(stderr, "failed to write 1 byte for %s\n", name);
+ if (nbytes == 1) {
+ unsigned char* line_buffer = malloc((size_t)w);
+ if (line_buffer == NULL) {
+ fprintf(stderr, "Out of memory");
+ goto fin;
+ }
+ for (j = 0; j < h; j++) {
+ if (comp->prec == 8 && comp->sgnd == 0) {
+ for (i = 0; i < w; i++) {
+ line_buffer[i] = (unsigned char)CLAMP(image->comps[compno].data[j * w + i], 0,
+ 255);
+ }
+ } else {
+ for (i = 0; i < w; i++) {
+ line_buffer[i] = (unsigned char)
+ clamp(image->comps[compno].data[j * w + i],
+ (int)comp->prec, (int)comp->sgnd);
+ }
+ }
+ res = fwrite(line_buffer, 1, (size_t)w, fdest);
+ if (res != (size_t)w) {
+ fprintf(stderr, "failed to write %d bytes for %s\n", w, name);
if (total > 256) {
free(name);
}
+ free(line_buffer);
goto fin;
}
}
+ free(line_buffer);
+ } else {
+
+ for (i = 0; i < w * h; i++) {
+ /* FIXME: clamp func is being called within a loop */
+ const int val = clamp(image->comps[compno].data[i],
+ (int)comp->prec, (int)comp->sgnd);
+
+ for (j = nbytes - 1; j >= 0; j--) {
+ int v = (int)(val >> (j * 8));
+ unsigned char byte = (unsigned char)v;
+ res = fwrite(&byte, 1, 1, fdest);
+
+ if (res < 1) {
+ fprintf(stderr, "failed to write 1 byte for %s\n", name);
+ if (total > 256) {
+ free(name);
+ }
+ goto fin;
+ }
+ }
+ }
}
+
if (total > 256) {
free(name);
}