Fixed a rare crash from textures with too many components.

Only seen in lbsa plaza on OSGrid, so far.

3 files changed, 25 insertions, 10 deletions

diff --git a/linden/indra/llimagej2coj/llimagej2coj.cpp b/linden/indra/llimagej2coj/llimagej2coj.cpp
index be6b6c8..b7a1b82 100644
--- a/linden/indra/llimagej2coj/llimagej2coj.cpp
+++ b/linden/indra/llimagej2coj/llimagej2coj.cpp
@@ -99,6 +99,7 @@ void info_callback(const char* msg, void*)
 
 LLImageJ2COJ::LLImageJ2COJ() : LLImageJ2CImpl()
 {
+        mRawImagep=NULL;
 }
 
 
@@ -166,9 +167,17 @@ BOOL LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decod
         // The image decode failed if the return was NULL or the component
         // count was zero.  The latter is just a sanity check before we
         // dereference the array.
-        if(!image || !image->numcomps)
+        if(!image) 
         {
-                llwarns << "ERROR -> decodeImpl: failed to decode image!" << llendl;
+                LL_DEBUGS("Openjpeg")  << "ERROR -> decodeImpl: failed to decode image - no image" << LL_ENDL;
+                return TRUE; // done
+        }
+
+        S32 img_components = image->numcomps;
+
+        if( !img_components ) // < 1 ||img_components > 4 )
+        {
+                LL_DEBUGS("Openjpeg") << "ERROR -> decodeImpl: failed to decode image wrong number of components: " << img_components << LL_ENDL;
                 if (image)
                 {
                         opj_image_destroy(image);
@@ -178,20 +187,21 @@ BOOL LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decod
         }
 
         // sometimes we get bad data out of the cache - check to see if the decode succeeded
-        for (S32 i = 0; i < image->numcomps; i++)
+        for (S32 i = 0; i < img_components; i++)
         {
                 if (image->comps[i].factor != base.getRawDiscardLevel())
                 {
                         // if we didn't get the discard level we're expecting, fail
-                        opj_image_destroy(image);
+                        if (image) //anyway somthing odd with the image, better check than crash
+                                opj_image_destroy(image);
                         base.mDecoding = FALSE;
                         return TRUE;
                 }
         }
         
-        if(image->numcomps <= first_channel)
+        if(img_components <= first_channel)
         {
-                llwarns << "trying to decode more channels than are present in image: numcomps: " << image->numcomps << " first_channel: " << first_channel << llendl;
+                LL_DEBUGS("Openjpeg") << "trying to decode more channels than are present in image: numcomps: " << img_components << " first_channel: " << first_channel << LL_ENDL;
                 if (image)
                 {
                         opj_image_destroy(image);
@@ -202,7 +212,7 @@ BOOL LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decod
 
         // Copy image data into our raw image format (instead of the separate channel format
 
-        S32 img_components = image->numcomps;
+
         S32 channels = img_components - first_channel;
         if( channels > max_channel_count )
                 channels = max_channel_count;
@@ -249,7 +259,10 @@ BOOL LLImageJ2COJ::decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decod
         }
 
         /* free image data structure */
-        opj_image_destroy(image);
+        if (image)
+        {
+                opj_image_destroy(image);
+        }
 
         return TRUE; // done
 }
diff --git a/linden/indra/llrender/llimagegl.cpp b/linden/indra/llrender/llimagegl.cpp
index 27b1d55..544eb80 100644
--- a/linden/indra/llrender/llimagegl.cpp
+++ b/linden/indra/llrender/llimagegl.cpp
@@ -1014,7 +1014,9 @@ BOOL LLImageGL::createGLTexture(S32 discard_level, const LLImageRaw* imageraw, S
                         mFormatType = GL_UNSIGNED_BYTE;
                         break;
                   default:
-                        llerrs << "Bad number of components for texture: " << (U32)getComponents() << llendl;
+                        LL_DEBUGS("Openjpeg") << "Bad number of components for texture: " << (U32)getComponents() << LL_ENDL;
+                        to_create = false;
+                        break;
                 }
         }
 
diff --git a/linden/indra/newview/app_settings/logcontrol.xml b/linden/indra/newview/app_settings/logcontrol.xml
index 60f78b7..401b145 100644
--- a/linden/indra/newview/app_settings/logcontrol.xml
+++ b/linden/indra/newview/app_settings/logcontrol.xml
@@ -51,7 +51,7 @@
                                                         <string>MediaState</string>
                                                         <string>ShaderLoading</string>
               <string>XMLNode</string>
-              
+                                                        <string>Openjpeg</string>
               <!--Unused debug messages below-->
               
               <!--<string>RLV</string>