talk/app/webrtc/java/jni/native_handle_impl.h

/*
 * libjingle
 * Copyright 2015 Google Inc.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 *     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.
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 * 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,
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#ifndef TALK_APP_WEBRTC_JAVA_JNI_NATIVE_HANDLE_IMPL_H_
#define TALK_APP_WEBRTC_JAVA_JNI_NATIVE_HANDLE_IMPL_H_

#include <jni.h>

#include "webrtc/common_video/include/video_frame_buffer.h"

namespace webrtc_jni {

// Wrapper for texture object.
struct NativeHandleImpl {
  NativeHandleImpl(JNIEnv* jni,
                   jint j_oes_texture_id,
                   jfloatArray j_transform_matrix);

  const int oes_texture_id;
  float sampling_matrix[16];
};

class AndroidTextureBuffer : public webrtc::NativeHandleBuffer {
 public:
  AndroidTextureBuffer(int width,
                       int height,
                       const NativeHandleImpl& native_handle,
                       jobject surface_texture_helper,
                       const rtc::Callback0<void>& no_longer_used);
  ~AndroidTextureBuffer();
  rtc::scoped_refptr<VideoFrameBuffer> NativeToI420Buffer() override;

  rtc::scoped_refptr<AndroidTextureBuffer> CropAndScale(
      int cropped_input_width,
      int cropped_input_height,
      int dst_widht,
      int dst_height);

 private:
  NativeHandleImpl native_handle_;
  // Raw object pointer, relying on the caller, i.e.,
  // AndroidVideoCapturerJni or the C++ SurfaceTextureHelper, to keep
  // a global reference. TODO(nisse): Make this a reference to the C++
  // SurfaceTextureHelper instead, but that requires some refactoring
  // of AndroidVideoCapturerJni.
  jobject surface_texture_helper_;
  rtc::Callback0<void> no_longer_used_cb_;
};

}  // namespace webrtc_jni

#endif  // TALK_APP_WEBRTC_JAVA_JNI_NATIVE_HANDLE_IMPL_H_