Check for OOM in BitmapFactory's getMimeTypeString().

Bug: 18909596

(cherry picked from commit 7ab249a18e08bfefb8c2d60af1fb668c67ba4368)

Change-Id: Ie7be228442876d47faf37e3f664e378253dab6e3

1 files changed, 9 insertions, 4 deletions

diff --git a/core/jni/android/graphics/BitmapFactory.cpp b/core/jni/android/graphics/BitmapFactory.cpp
index a578b5db7d91..49577cf7f340 100644
--- a/core/jni/android/graphics/BitmapFactory.cpp
+++ b/core/jni/android/graphics/BitmapFactory.cpp
@@ -77,8 +77,10 @@ jstring getMimeTypeString(JNIEnv* env, SkImageDecoder::Format format) {
         }
     }
 
-    jstring jstr = 0;
-    if (NULL != cstr) {
+    jstring jstr = NULL;
+    if (cstr != NULL) {
+        // NOTE: Caller should env->ExceptionCheck() for OOM
+        // (can't check for NULL as it's a valid return value)
         jstr = env->NewStringUTF(cstr);
     }
     return jstr;
@@ -330,10 +332,13 @@ static jobject doDecode(JNIEnv* env, SkStreamRewindable* stream, jobject padding
 
     // update options (if any)
     if (options != NULL) {
+        jstring mimeType = getMimeTypeString(env, decoder->getFormat());
+        if (env->ExceptionCheck()) {
+            return nullObjectReturn("OOM in getMimeTypeString()");
+        }
         env->SetIntField(options, gOptions_widthFieldID, scaledWidth);
         env->SetIntField(options, gOptions_heightFieldID, scaledHeight);
-        env->SetObjectField(options, gOptions_mimeFieldID,
-                getMimeTypeString(env, decoder->getFormat()));
+        env->SetObjectField(options, gOptions_mimeFieldID, mimeType);
     }
 
     // if we're in justBounds mode, return now (skip the java bitmap)