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      1 /*
      2  * libjingle
      3  * Copyright 2015 Google Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are met:
      7  *
      8  *  1. Redistributions of source code must retain the above copyright notice,
      9  *     this list of conditions and the following disclaimer.
     10  *  2. Redistributions in binary form must reproduce the above copyright notice,
     11  *     this list of conditions and the following disclaimer in the documentation
     12  *     and/or other materials provided with the distribution.
     13  *  3. The name of the author may not be used to endorse or promote products
     14  *     derived from this software without specific prior written permission.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
     17  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     18  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
     19  * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     20  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     21  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     22  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     23  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     25  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 
     30 #include "talk/app/webrtc/java/jni/surfacetexturehelper_jni.h"
     31 
     32 #include "talk/app/webrtc/java/jni/classreferenceholder.h"
     33 #include "webrtc/base/bind.h"
     34 #include "webrtc/base/checks.h"
     35 
     36 namespace webrtc_jni {
     37 
     38 SurfaceTextureHelper::SurfaceTextureHelper(
     39     JNIEnv* jni, jobject surface_texture_helper)
     40   : j_surface_texture_helper_(jni, surface_texture_helper),
     41     j_return_texture_method_(
     42         GetMethodID(jni,
     43                     FindClass(jni, "org/webrtc/SurfaceTextureHelper"),
     44                     "returnTextureFrame",
     45                     "()V")) {
     46   CHECK_EXCEPTION(jni) << "error during initialization of SurfaceTextureHelper";
     47 }
     48 
     49 SurfaceTextureHelper::~SurfaceTextureHelper() {
     50 }
     51 
     52 void SurfaceTextureHelper::ReturnTextureFrame() const {
     53   JNIEnv* jni = AttachCurrentThreadIfNeeded();
     54   jni->CallVoidMethod(*j_surface_texture_helper_, j_return_texture_method_);
     55 
     56   CHECK_EXCEPTION(
     57       jni) << "error during SurfaceTextureHelper.returnTextureFrame";
     58 }
     59 
     60 rtc::scoped_refptr<webrtc::VideoFrameBuffer>
     61 SurfaceTextureHelper::CreateTextureFrame(int width, int height,
     62     const NativeHandleImpl& native_handle) {
     63   return new rtc::RefCountedObject<AndroidTextureBuffer>(
     64       width, height, native_handle, *j_surface_texture_helper_,
     65       rtc::Bind(&SurfaceTextureHelper::ReturnTextureFrame, this));
     66 }
     67 
     68 }  // namespace webrtc_jni
     69