Add Create() function to AudioCodecBridge and VideoCodecBridge to allow return of null pointers

media/base/android/media_codec_bridge.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/android/media_codec_bridge.h"
 
 #include <jni.h>
 
 #include "base/android/build_info.h"
 #include "base/android/jni_android.h"
@@ skipping 259 matching lines @@
 int MediaCodecBridge::GetOutputBuffers() {
   JNIEnv* env = AttachCurrentThread();
 
   j_output_buffers_.Reset(
       JNI_MediaCodec::Java_MediaCodec_getOutputBuffers(
           env, j_media_codec_.obj()));
 
   return env->GetArrayLength(j_output_buffers_.obj());
 }
 
-AudioCodecBridge::AudioCodecBridge(const AudioCodec codec)
-    : MediaCodecBridge(AudioCodecToMimeType(codec)) {
+AudioCodecBridge::AudioCodecBridge(const char* mime)
+    : MediaCodecBridge(mime) {
 }
 
 bool AudioCodecBridge::Start(
     const AudioCodec codec, int sample_rate, int channel_count,
     const uint8* extra_data, size_t extra_data_size) {
   JNIEnv* env = AttachCurrentThread();
   DCHECK(AudioCodecToMimeType(codec));
 
   ScopedJavaLocalRef<jstring> j_mime =
       ConvertUTF8ToJavaString(env, AudioCodecToMimeType(codec));
@@ skipping 51 matching lines @@
     env->DeleteLocalRef(codec_header);
     env->DeleteLocalRef(identification_header);
   }
 
   JNI_MediaCodec::Java_MediaCodec_configure(
       env, media_codec(), j_format.obj(), NULL, NULL, 0);
   StartInternal();
   return true;
 }
 
-VideoCodecBridge::VideoCodecBridge(const VideoCodec codec)
-    : MediaCodecBridge(VideoCodecToMimeType(codec)) {
+VideoCodecBridge::VideoCodecBridge(const char* mime)
+    : MediaCodecBridge(mime) {
 }
 
 bool VideoCodecBridge::Start(
     const VideoCodec codec, const gfx::Size& size, jobject surface) {
   JNIEnv* env = AttachCurrentThread();
   DCHECK(VideoCodecToMimeType(codec));
 
   ScopedJavaLocalRef<jstring> j_mime =
       ConvertUTF8ToJavaString(env, VideoCodecToMimeType(codec));
   ScopedJavaLocalRef<jobject> j_format(
       JNI_MediaFormat::Java_MediaFormat_createVideoFormat(
           env, j_mime.obj(), size.width(), size.height()));
   DCHECK(!j_format.is_null());
   JNI_MediaCodec::Java_MediaCodec_configure(
       env, media_codec(), j_format.obj(), surface, NULL, 0);
   StartInternal();
   return true;
 }
 
+AudioCodecBridge* AudioCodecBridge::Create(
+    const AudioCodec codec) {
+  const char* mime = AudioCodecToMimeType(codec);
+  return mime ? new AudioCodecBridge(mime) : NULL;
+}
+
+VideoCodecBridge* VideoCodecBridge::Create(
+    const VideoCodec codec) {
+  const char* mime = VideoCodecToMimeType(codec);
+  return mime ? new VideoCodecBridge(mime) : NULL;
+}
+
 }  // namespace media