Implement screen capture for android

media/screen_capture/android/screen_capture_machine_android.h

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_SCREEN_CAPTURE_ANDROID_SCREEN_CAPTURE_MACHINE_ANDROID_H_
+#define MEDIA_SCREEN_CAPTURE_ANDROID_SCREEN_CAPTURE_MACHINE_ANDROID_H_
+
+#include <jni.h>
+
+#include "base/android/scoped_java_ref.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "content/browser/media/capture/content_video_capture_device_core.h"
+#include "content/public/browser/power_save_blocker.h"
+
+namespace media {
+
+// ScreenCaptureMachineAndroid captures 32bit RGB using SurfaceFlinger.
+class ScreenCaptureMachineAndroid
+    : public content::VideoCaptureMachine,
+      public base::SupportsWeakPtr<ScreenCaptureMachineAndroid> {
+ public:
+  ScreenCaptureMachineAndroid();
+  ~ScreenCaptureMachineAndroid() override;
+
+  static bool RegisterScreenCaptureMachine(JNIEnv* env);
+
+  // Implement org.chromium.media.ScreenCapture.nativeOnFrameAvailable.
+  void OnFrameAvailable(
+      JNIEnv* env,
+      jobject obj,
+      jbyteArray data,
+      jint cropWidth,
+      jint cropHeight,
+      jlong timestamp);
+
+  // Implement org.chromium.media.ScreenCapture.nativeOnActivityResult.
+  void OnActivityResult(JNIEnv* env, jobject obj, jint result);
+
+  // VideoCaptureMachine overrides.
+  void Start(
+      const scoped_refptr<content::ThreadSafeCaptureOracle>& oracle_proxy,
+      const media::VideoCaptureParams& params,
+      const base::Callback<void(bool)> callback) override;
+  void Stop(const base::Closure& callback) override;
+
+ private:
+  // Makes all the decisions about which frames to copy, and how.
+  scoped_refptr<content::ThreadSafeCaptureOracle> oracle_proxy_;
+
+  VideoCaptureFormat capture_format_;
+
+  // Java VideoCaptureAndroid instance.
+  base::android::ScopedJavaLocalRef<jobject> j_capture_;
+
+  // TODO(jiayl): Remove power_save_blocker_ when there is an API to keep the
+  // screen from sleeping for the drive-by web.
+  scoped_ptr<content::PowerSaveBlocker> power_save_blocker_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenCaptureMachineAndroid);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_SCREEN_CAPTURE_ANDROID_SCREEN_CAPTURE_MACHINE_ANDROID_H_