1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MediaListener_h 18 #define MediaListener_h 19 20 #if USE(ACCELERATED_COMPOSITING) 21 22 #include <gui/SurfaceTexture.h> 23 #include <gui/SurfaceTextureClient.h> 24 #include <jni.h> 25 #include <JNIUtility.h> 26 #include "MediaTexture.h" 27 #include "WebCoreJni.h" 28 29 namespace WebCore { 30 31 class MediaListener : public android::SurfaceTexture::FrameAvailableListener { 32 33 public: 34 MediaListener(jobject weakWebViewRef, 35 const sp<android::SurfaceTexture>& surfaceTexture, 36 const sp<ANativeWindow>& nativeWindow) 37 : m_weakWebViewRef(weakWebViewRef) 38 , m_postInvalMethod(0) 39 , m_frameAvailable(false) 40 , m_surfaceTexture(surfaceTexture) 41 , m_nativeWindow(nativeWindow) 42 , m_framerateCallback(0) 43 { 44 if (!m_weakWebViewRef) 45 return; 46 47 JNIEnv* env = JSC::Bindings::getJNIEnv(); 48 jobject localWebViewRef = env->NewLocalRef(m_weakWebViewRef); 49 if (localWebViewRef) { 50 jclass wvClass = env->GetObjectClass(localWebViewRef); 51 m_postInvalMethod = env->GetMethodID(wvClass, "postInvalidate", "()V"); 52 env->DeleteLocalRef(wvClass); 53 env->DeleteLocalRef(localWebViewRef); 54 } 55 checkException(env); 56 } 57 58 virtual void onFrameAvailable() 59 { 60 JNIEnv* env = JSC::Bindings::getJNIEnv(); 61 jobject localWebViewRef = env->NewLocalRef(m_weakWebViewRef); 62 if (localWebViewRef) { 63 env->CallVoidMethod(localWebViewRef, m_postInvalMethod); 64 env->DeleteLocalRef(localWebViewRef); 65 } 66 checkException(env); 67 if (!m_frameAvailable) { 68 m_frameAvailable = true; 69 } 70 if (m_framerateCallback) 71 m_framerateCallback(m_nativeWindow.get(), m_surfaceTexture->getTimestamp()); 72 } 73 74 bool isFrameAvailable() { return m_frameAvailable; } 75 void setFramerateCallback(FramerateCallbackProc callback) { m_framerateCallback = callback; } 76 77 private: 78 jobject m_weakWebViewRef; 79 jmethodID m_postInvalMethod; 80 bool m_frameAvailable; 81 sp<android::SurfaceTexture> m_surfaceTexture; 82 sp<ANativeWindow> m_nativeWindow; 83 FramerateCallbackProc m_framerateCallback; 84 }; 85 86 } // namespace WebCore 87 88 #endif // USE(ACCELERATED_COMPOSITING) 89 #endif // MediaListener_h 90
