| /* |
| * libjingle |
| * Copyright 2015 Google Inc. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef TALK_APP_WEBRTC_JAVA_JNI_SURFACETEXTUREHELPER_JNI_H_ |
| #define TALK_APP_WEBRTC_JAVA_JNI_SURFACETEXTUREHELPER_JNI_H_ |
| |
| #include <jni.h> |
| |
| #include "talk/app/webrtc/java/jni/jni_helpers.h" |
| #include "talk/app/webrtc/java/jni/native_handle_impl.h" |
| #include "webrtc/base/refcount.h" |
| #include "webrtc/base/scoped_ref_ptr.h" |
| #include "webrtc/common_video/include/video_frame_buffer.h" |
| |
| namespace webrtc_jni { |
| |
| // Helper class to create and synchronize access to an Android SurfaceTexture. |
| // It is used for creating webrtc::VideoFrameBuffers from a SurfaceTexture when |
| // the SurfaceTexture has been updated. |
| // When the VideoFrameBuffer is released, this class returns the buffer to the |
| // java SurfaceTextureHelper so it can be updated safely. The VideoFrameBuffer |
| // can be released on an arbitrary thread. |
| // SurfaceTextureHelper is reference counted to make sure that it is not |
| // destroyed while a VideoFrameBuffer is in use. |
| // This class is the C++ counterpart of the java class SurfaceTextureHelper. |
| // Usage: |
| // 1. Create an instance of this class. |
| // 2. Call GetJavaSurfaceTextureHelper to get the Java SurfaceTextureHelper. |
| // 3. Register a listener to the Java SurfaceListener and start producing |
| // new buffers. |
| // 3. Call CreateTextureFrame to wrap the Java texture in a VideoFrameBuffer. |
| class SurfaceTextureHelper : public rtc::RefCountInterface { |
| public: |
| SurfaceTextureHelper(JNIEnv* jni, jobject shared_egl_context); |
| |
| // Returns the Java SurfaceTextureHelper. |
| jobject GetJavaSurfaceTextureHelper() const { |
| return *j_surface_texture_helper_; |
| } |
| |
| rtc::scoped_refptr<webrtc::VideoFrameBuffer> CreateTextureFrame( |
| int width, |
| int height, |
| const NativeHandleImpl& native_handle); |
| |
| protected: |
| ~SurfaceTextureHelper(); |
| |
| private: |
| // May be called on arbitrary thread. |
| void ReturnTextureFrame() const; |
| |
| const ScopedGlobalRef<jclass> j_surface_texture_helper_class_; |
| const ScopedGlobalRef<jobject> j_surface_texture_helper_; |
| const jmethodID j_return_texture_method_; |
| }; |
| |
| } // namespace webrtc_jni |
| |
| #endif // TALK_APP_WEBRTC_JAVA_JNI_SURFACETEXTUREHELPER_JNI_H_ |