frame_generator_capturer.h

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/*

 *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.

 *  Use of this source code is governed by a BSD-style license

 *  that can be found in the LICENSE file in the root of the source

 *  tree. An additional intellectual property rights grant can be found

 *  in the file PATENTS.  All contributing project authors may

 *  be found in the AUTHORS file in the root of the source tree.

*/

#ifndef TEST_FRAME_GENERATOR_CAPTURER_H_

#define TEST_FRAME_GENERATOR_CAPTURER_H_

#include <cstddef>

#include <cstdint>

#include <memory>

#include "absl/types/optional.h"

#include "api/task_queue/task_queue_base.h"

#include "api/task_queue/task_queue_factory.h"

#include "api/test/frame_generator_interface.h"

#include "api/video/color_space.h"

#include "api/video/video_frame.h"

#include "api/video/video_rotation.h"

#include "api/video/video_sink_interface.h"

#include "api/video/video_source_interface.h"

#include "rtc_base/synchronization/mutex.h"

#include "rtc_base/task_utils/repeating_task.h"

#include "rtc_base/thread_annotations.h"

#include "system_wrappers/include/clock.h"

#include "test/test_video_capturer.h"

namespace webrtc {

namespace test {

class FrameGeneratorCapturer : public TestVideoCapturer {

 public:

  class SinkWantsObserver {

   public:

    // OnSinkWantsChanged is called when FrameGeneratorCapturer::AddOrUpdateSink

    // is called.

    virtual void OnSinkWantsChanged(rtc::VideoSinkInterface<VideoFrame>* sink,

                                    const rtc::VideoSinkWants& wants) = 0;

   protected:

    virtual ~SinkWantsObserver() {}

};

  FrameGeneratorCapturer(

      Clock* clock,

      std::unique_ptr<FrameGeneratorInterface> frame_generator,

      int target_fps,

      TaskQueueFactory& task_queue_factory);

  virtual ~FrameGeneratorCapturer();

  void Start() override;

  void Stop() override;

  void ChangeResolution(size_t width, size_t height);

  void ChangeFramerate(int target_framerate);

  int GetFrameWidth() const override;

  int GetFrameHeight() const override;

  struct Resolution {

    int width;

    int height;

};

  absl::optional<Resolution> GetResolution() const;

  void OnOutputFormatRequest(int width,

                             int height,

                             const absl::optional<int>& max_fps);

  void SetSinkWantsObserver(SinkWantsObserver* observer);

  void AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink,

                       const rtc::VideoSinkWants& wants) override;

  void RemoveSink(rtc::VideoSinkInterface<VideoFrame>* sink) override;

  void ForceFrame();

  void SetFakeRotation(VideoRotation rotation);

  void SetFakeColorSpace(absl::optional<ColorSpace> color_space);

  bool Init();

 private:

  void InsertFrame();

  static bool Run(void* obj);

  int GetCurrentConfiguredFramerate();

  Clock* const clock_;

  RepeatingTaskHandle frame_task_;

  bool sending_;

  SinkWantsObserver* sink_wants_observer_ RTC_GUARDED_BY(&lock_);

  Mutex lock_;

  std::unique_ptr<FrameGeneratorInterface> frame_generator_;

  int source_fps_ RTC_GUARDED_BY(&lock_);

  int target_capture_fps_ RTC_GUARDED_BY(&lock_);

  VideoRotation fake_rotation_ = kVideoRotation_0;

  absl::optional<ColorSpace> fake_color_space_ RTC_GUARDED_BY(&lock_);

  std::unique_ptr<TaskQueueBase, TaskQueueDeleter> task_queue_;

};

}  // namespace test

}  // namespace webrtc

#endif  // TEST_FRAME_GENERATOR_CAPTURER_H_