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 #ifdef DEBUG 30 31 #include <cutils/log.h> 32 #include <wtf/text/CString.h> 33 34 #undef XLOG 35 #define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "MediaListener", __VA_ARGS__) 36 37 #else 38 39 #undef XLOG 40 #define XLOG(...) 41 42 #endif // DEBUG 43 44 namespace WebCore { 45 46 class MediaListener : public android::SurfaceTexture::FrameAvailableListener { 47 48 public: MediaListener(jobject weakWebViewRef,const sp<android::SurfaceTexture> & surfaceTexture,const sp<ANativeWindow> & nativeWindow)49 MediaListener(jobject weakWebViewRef, 50 const sp<android::SurfaceTexture>& surfaceTexture, 51 const sp<ANativeWindow>& nativeWindow) 52 : m_weakWebViewRef(weakWebViewRef) 53 , m_postInvalMethod(0) 54 , m_frameAvailable(false) 55 , m_surfaceTexture(surfaceTexture) 56 , m_nativeWindow(nativeWindow) 57 , m_framerateCallback(0) 58 { 59 if (!m_weakWebViewRef) 60 return; 61 62 JNIEnv* env = JSC::Bindings::getJNIEnv(); 63 jobject localWebViewRef = env->NewLocalRef(m_weakWebViewRef); 64 if (localWebViewRef) { 65 jclass wvClass = env->GetObjectClass(localWebViewRef); 66 m_postInvalMethod = env->GetMethodID(wvClass, "postInvalidate", "()V"); 67 env->DeleteLocalRef(wvClass); 68 env->DeleteLocalRef(localWebViewRef); 69 } 70 checkException(env); 71 } 72 onFrameAvailable()73 virtual void onFrameAvailable() 74 { 75 JNIEnv* env = JSC::Bindings::getJNIEnv(); 76 jobject localWebViewRef = env->NewLocalRef(m_weakWebViewRef); 77 if (localWebViewRef) { 78 env->CallVoidMethod(localWebViewRef, m_postInvalMethod); 79 env->DeleteLocalRef(localWebViewRef); 80 } 81 checkException(env); 82 if (!m_frameAvailable) { 83 m_frameAvailable = true; 84 } 85 if (m_framerateCallback) 86 m_framerateCallback(m_nativeWindow.get(), m_surfaceTexture->getTimestamp()); 87 } 88 isFrameAvailable()89 bool isFrameAvailable() { return m_frameAvailable; } setFramerateCallback(FramerateCallbackProc callback)90 void setFramerateCallback(FramerateCallbackProc callback) { m_framerateCallback = callback; } 91 92 private: 93 jobject m_weakWebViewRef; 94 jmethodID m_postInvalMethod; 95 bool m_frameAvailable; 96 sp<android::SurfaceTexture> m_surfaceTexture; 97 sp<ANativeWindow> m_nativeWindow; 98 FramerateCallbackProc m_framerateCallback; 99 }; 100 101 } // namespace WebCore 102 103 #endif // USE(ACCELERATED_COMPOSITING) 104 #endif // MediaListener_h 105