additional check when scaling image

1 files changed, 3 insertions, 0 deletions

diff --git a/imagecache.c b/imagecache.c
index 93baa9d..5c4c50a 100644
--- a/imagecache.c
+++ b/imagecache.c
@@ -408,6 +408,8 @@ void cImageCache::InsertIntoGridCache(std::string name, int width, int height, b
 }

 

 cImage *cImageCache::CreateGrid(int width, int height, bool active) {

+    if (width > geoManager.osdWidth || width < 6 || height > geoManager.osdHeight || height < 6)

+        return NULL;

     Image *currentGridBuffer = NULL;

     if (active)

         currentGridBuffer = &bufferGridActive;

@@ -424,6 +426,7 @@ cImage *cImageCache::CreateGrid(int width, int height, bool active) {
     tColor *imgData = (tColor *)image->Data();

     if (w != width || h != height) {

         ImageScaler scaler;

+        //esyslog("tvguide: imagescaler parameters: width %d, height %d, w %d, h %d", width, height, w, h);

         scaler.SetImageParameters(imgData, width, width, height, w, h);

         for (const void *pixels_end = &pixels[w*h]; pixels < pixels_end; ++pixels)

             scaler.PutSourcePixel(pixels->blue / ((MaxRGB + 1) / 256),