support adaptive playback in MSE

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 <string>
 
 #include "base/android/build_info.h"
@@ skipping 698 matching lines @@
                                             kConfigureFlagEncode)) {
     return NULL;
   }
 
   return bridge->StartInternal() ? bridge.release() : NULL;
 }
 
 VideoCodecBridge::VideoCodecBridge(const std::string& mime,
                                    bool is_secure,
                                    MediaCodecDirection direction)
-    : MediaCodecBridge(mime, is_secure, direction) {}
+    : MediaCodecBridge(mime, is_secure, direction),
+      adaptive_playback_supported_for_testing_(-1) {}
 
 void VideoCodecBridge::SetVideoBitrate(int bps) {
   JNIEnv* env = AttachCurrentThread();
   Java_MediaCodecBridge_setVideoBitrate(env, media_codec(), bps);
 }
 
 void VideoCodecBridge::RequestKeyFrameSoon() {
   JNIEnv* env = AttachCurrentThread();
   Java_MediaCodecBridge_requestKeyFrameSoon(env, media_codec());
 }
 
+bool VideoCodecBridge::IsAdaptivePlaybackSupported(int width, int height) {
+  if (adaptive_playback_supported_for_testing_ == 0)
+    return false;
+  else if (adaptive_playback_supported_for_testing_ > 0)
+    return true;
+  JNIEnv* env = AttachCurrentThread();
+  return Java_MediaCodecBridge_isAdaptivePlaybackSupported(
+      env, media_codec(), width, height);
+}
+
 bool MediaCodecBridge::RegisterMediaCodecBridge(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace media