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/*
* 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_ANDROIDVIDEOCAPTURER_H_
#define TALK_APP_WEBRTC_ANDROIDVIDEOCAPTURER_H_
#include <string>
#include <vector>
#include "talk/media/base/videocapturer.h"
#include "webrtc/base/thread_checker.h"
#include "webrtc/common_video/include/video_frame_buffer.h"
namespace webrtc {
class AndroidVideoCapturer;
class AndroidVideoCapturerDelegate : public rtc::RefCountInterface {
public:
virtual ~AndroidVideoCapturerDelegate() {}
// Start capturing. The implementation of the delegate must call
// AndroidVideoCapturer::OnCapturerStarted with the result of this request.
virtual void Start(int width, int height, int framerate,
AndroidVideoCapturer* capturer) = 0;
// Stops capturing.
// The delegate may not call into AndroidVideoCapturer after this call.
virtual void Stop() = 0;
// Must returns a JSON string "{{width=xxx, height=xxx, framerate = xxx}}"
virtual std::string GetSupportedFormats() = 0;
};
// Android implementation of cricket::VideoCapturer for use with WebRtc
// PeerConnection.
class AndroidVideoCapturer : public cricket::VideoCapturer {
public:
explicit AndroidVideoCapturer(
const rtc::scoped_refptr<AndroidVideoCapturerDelegate>& delegate);
virtual ~AndroidVideoCapturer();
// Called from JNI when the capturer has been started.
void OnCapturerStarted(bool success);
// Called from JNI when a new frame has been captured.
// Argument |buffer| is intentionally by value, for use with rtc::Bind.
void OnIncomingFrame(
const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& buffer,
int rotation,
int64_t time_stamp);
// Called from JNI to request a new video format.
void OnOutputFormatRequest(int width, int height, int fps);
AndroidVideoCapturerDelegate* delegate() { return delegate_.get(); }
// cricket::VideoCapturer implementation.
bool GetBestCaptureFormat(const cricket::VideoFormat& desired,
cricket::VideoFormat* best_format) override;
private:
// cricket::VideoCapturer implementation.
// Video frames will be delivered using
// cricket::VideoCapturer::SignalFrameCaptured on the thread that calls Start.
cricket::CaptureState Start(
const cricket::VideoFormat& capture_format) override;
void Stop() override;
bool IsRunning() override;
bool IsScreencast() const override { return false; }
bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override;
bool running_;
rtc::scoped_refptr<AndroidVideoCapturerDelegate> delegate_;
rtc::ThreadChecker thread_checker_;
class FrameFactory;
FrameFactory* frame_factory_; // Owned by cricket::VideoCapturer.
cricket::CaptureState current_state_;
};
} // namespace webrtc
#endif // TALK_APP_WEBRTC_ANDROIDVIDEOCAPTURER_H_
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