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wrlib: Improvements to Netpbm memory usage on errors

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This is actually taken from patch:
  wrlib: Added support for webp image

in which it is out of place as it is unrelated

Signed-off-by: Carlos R. Mafra <crmafra@gmail.com>
This commit is contained in:
David Maciejak
2014-04-16 22:29:45 +02:00
committed by Carlos R. Mafra
parent 5c96c69cb5
commit 051a30f550
1 changed files with 33 additions and 13 deletions
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46
wrlib/load_ppm.c
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@@ -112,12 +112,16 @@ static RImage *load_graymap(FILE * file, int w, int h, int max, int raw)
unsigned char *ptr;
int x, y;
image = RCreateImage(w, h, 0);
if (!image)
if (raw != '2' && raw != '5') {
RErrorCode = RERR_BADFORMAT;
return NULL;
}
if (raw != '2' && raw != '5')
return image;
image = RCreateImage(w, h, 0);
if (!image) {
RErrorCode = RERR_NOMEMORY;
return NULL;
}
if (max < 256) {
ptr = image->data;
@@ -129,6 +133,7 @@ static RImage *load_graymap(FILE * file, int w, int h, int max, int raw)
if (val > max || val < 0) {
RErrorCode = RERR_BADIMAGEFILE;
RReleaseImage(image);
return NULL;
}
@@ -142,12 +147,16 @@ static RImage *load_graymap(FILE * file, int w, int h, int max, int raw)
if (raw == '5') {
char *buf;
buf = malloc(w + 1);
if (!buf)
if (!buf) {
RErrorCode = RERR_NOMEMORY;
RReleaseImage(image);
return NULL;
}
for (y = 0; y < h; y++) {
if (!fread(buf, w, 1, file)) {
free(buf);
RErrorCode = RERR_BADIMAGEFILE;
RReleaseImage(image);
return NULL;
}
@@ -171,12 +180,16 @@ static RImage *load_pixmap(FILE * file, int w, int h, int max, int raw)
unsigned char *ptr;
int i = 0;
image = RCreateImage(w, h, 0);
if (!image)
if (raw != '3' && raw != '6') {
RErrorCode = RERR_BADFORMAT;
return NULL;
}
if (raw != '3' && raw != '6')
return image;
image = RCreateImage(w, h, 0);
if (!image) {
RErrorCode = RERR_NOMEMORY;
return NULL;
}
ptr = image->data;
if (max < 256) {
@@ -189,6 +202,7 @@ static RImage *load_pixmap(FILE * file, int w, int h, int max, int raw)
if (val > max || val < 0) {
RErrorCode = RERR_BADIMAGEFILE;
RReleaseImage(image);
return NULL;
}
@@ -202,6 +216,7 @@ static RImage *load_pixmap(FILE * file, int w, int h, int max, int raw)
while (i < w * h) {
if (fread(buf, 1, 3, file) != 3) {
RErrorCode = RERR_BADIMAGEFILE;
RReleaseImage(image);
return NULL;
}
@@ -222,12 +237,16 @@ static RImage *load_bitmap(FILE * file, int w, int h, int max, int raw)
int val;
unsigned char *ptr;
image = RCreateImage(w, h, 0);
if (!image)
if (raw != '1' && raw != '4') {
RErrorCode = RERR_BADFORMAT;
return NULL;
}
if (raw != '1' && raw != '4')
return image;
image = RCreateImage(w, h, 0);
if (!image) {
RErrorCode = RERR_NOMEMORY;
return NULL;
}
ptr = image->data;
if (raw == '1') {
@@ -237,6 +256,7 @@ static RImage *load_bitmap(FILE * file, int w, int h, int max, int raw)
if (val > max || val < 0) {
RErrorCode = RERR_BADIMAGEFILE;
RReleaseImage(image);
return NULL;
}