blob: 69260fa7ecda32b99300c4ff73ad4ffeaef3c0ed (
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diff --git a/src/jbig2.cc b/src/jbig2.cc
index 515c1ef..0bddb90 100644
--- a/src/jbig2.cc
+++ b/src/jbig2.cc
@@ -418,8 +418,11 @@ main(int argc, char **argv) {
if (pixl->d > 8) {
gray = pixConvertRGBToGrayFast(pixl);
if (!gray) return 1;
- } else {
+ } else if (pixl->d == 4 || pixl->d == 8) {
gray = pixClone(pixl);
+ } else {
+ fprintf(stderr, "Unsupported input image depth: %d\n", pixl->d);
+ return 1;
}
if (up2) {
pixt = pixScaleGray2xLIThresh(gray, bw_threshold);
@@ -432,6 +435,10 @@ main(int argc, char **argv) {
} else {
pixt = pixClone(pixl);
}
+ if (!pixt) {
+ fprintf(stderr, "Failed to convert input image to binary\n");
+ return 1;
+ }
if (verbose)
pixInfo(pixt, "thresholded image:");
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