test/frame_generator_capturer.cc - src/webrtc - Git at Google

 /*
  *  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.
  */

 #include "webrtc/test/frame_generator_capturer.h"

 #include <utility>
 #include <vector>

 #include "webrtc/rtc_base/criticalsection.h"
 #include "webrtc/rtc_base/logging.h"
 #include "webrtc/rtc_base/platform_thread.h"
 #include "webrtc/rtc_base/task_queue.h"
 #include "webrtc/rtc_base/timeutils.h"
 #include "webrtc/system_wrappers/include/clock.h"
 #include "webrtc/test/frame_generator.h"
 #include "webrtc/call/video_send_stream.h"

 namespace webrtc {
 namespace test {

 class FrameGeneratorCapturer::InsertFrameTask : public rtc::QueuedTask {
  public:
   // Repeats in |repeat_interval_ms|. One-time if |repeat_interval_ms| == 0.
   InsertFrameTask(
       webrtc::test::FrameGeneratorCapturer* frame_generator_capturer,
       uint32_t repeat_interval_ms)
       : frame_generator_capturer_(frame_generator_capturer),
         repeat_interval_ms_(repeat_interval_ms),
         intended_run_time_ms_(-1) {}

  private:
   bool Run() override {
     bool task_completed = true;
     if (repeat_interval_ms_ > 0) {
       // This is not a one-off frame. Check if the frame interval for this
       // task queue is the same same as the current configured frame rate.
       uint32_t current_interval_ms =
           1000 / frame_generator_capturer_->GetCurrentConfiguredFramerate();
       if (repeat_interval_ms_ != current_interval_ms) {
         // Frame rate has changed since task was started, create a new instance.
         rtc::TaskQueue::Current()->PostDelayedTask(
             std::unique_ptr<rtc::QueuedTask>(new InsertFrameTask(
                 frame_generator_capturer_, current_interval_ms)),
             current_interval_ms);
       } else {
         // Schedule the next frame capture event to happen at approximately the
         // correct absolute time point.
         int64_t delay_ms;
         int64_t time_now_ms = rtc::TimeMillis();
         if (intended_run_time_ms_ > 0) {
           delay_ms = time_now_ms - intended_run_time_ms_;
         } else {
           delay_ms = 0;
           intended_run_time_ms_ = time_now_ms;
         }
         intended_run_time_ms_ += repeat_interval_ms_;
         if (delay_ms < repeat_interval_ms_) {
           rtc::TaskQueue::Current()->PostDelayedTask(
               std::unique_ptr<rtc::QueuedTask>(this),
               repeat_interval_ms_ - delay_ms);
         } else {
           rtc::TaskQueue::Current()->PostDelayedTask(
               std::unique_ptr<rtc::QueuedTask>(this), 0);
           LOG(LS_ERROR)
               << "Frame Generator Capturer can't keep up with requested fps";
         }
         // Repost of this instance, make sure it is not deleted.
         task_completed = false;
       }
     }
     frame_generator_capturer_->InsertFrame();
     // Task should be deleted only if it's not repeating.
     return task_completed;
   }

   webrtc::test::FrameGeneratorCapturer* const frame_generator_capturer_;
   const uint32_t repeat_interval_ms_;
   int64_t intended_run_time_ms_;
 };

 FrameGeneratorCapturer* FrameGeneratorCapturer::Create(int width,
                                                        int height,
                                                        int target_fps,
                                                        Clock* clock) {
   std::unique_ptr<FrameGeneratorCapturer> capturer(new FrameGeneratorCapturer(
       clock, FrameGenerator::CreateSquareGenerator(width, height), target_fps));
   if (!capturer->Init())
     return nullptr;

   return capturer.release();
 }

 FrameGeneratorCapturer* FrameGeneratorCapturer::CreateFromYuvFile(
     const std::string& file_name,
     size_t width,
     size_t height,
     int target_fps,
     Clock* clock) {
   std::unique_ptr<FrameGeneratorCapturer> capturer(new FrameGeneratorCapturer(
       clock,
       FrameGenerator::CreateFromYuvFile(std::vector<std::string>(1, file_name),
                                         width, height, 1),
       target_fps));
   if (!capturer->Init())
     return nullptr;

   return capturer.release();
 }

 FrameGeneratorCapturer* FrameGeneratorCapturer::CreateSlideGenerator(
     int width,
     int height,
     int frame_repeat_count,
     int target_fps,
     Clock* clock) {
   std::unique_ptr<FrameGeneratorCapturer> capturer(new FrameGeneratorCapturer(
       clock, FrameGenerator::CreateSlideGenerator(width, height,
                                                   frame_repeat_count),
       target_fps));
   if (!capturer->Init())
     return nullptr;

   return capturer.release();
 }

 FrameGeneratorCapturer::FrameGeneratorCapturer(
     Clock* clock,
     std::unique_ptr<FrameGenerator> frame_generator,
     int target_fps)
     : clock_(clock),
       sending_(false),
       sink_(nullptr),
       sink_wants_observer_(nullptr),
       frame_generator_(std::move(frame_generator)),
       target_fps_(target_fps),
       first_frame_capture_time_(-1),
       task_queue_("FrameGenCapQ",
                   rtc::TaskQueue::Priority::HIGH) {
   RTC_DCHECK(frame_generator_);
   RTC_DCHECK_GT(target_fps, 0);
 }

 FrameGeneratorCapturer::~FrameGeneratorCapturer() {
   Stop();
 }

 void FrameGeneratorCapturer::SetFakeRotation(VideoRotation rotation) {
   rtc::CritScope cs(&lock_);
   fake_rotation_ = rotation;
 }

 bool FrameGeneratorCapturer::Init() {
   // This check is added because frame_generator_ might be file based and should
   // not crash because a file moved.
   if (frame_generator_.get() == nullptr)
     return false;

   int framerate_fps = GetCurrentConfiguredFramerate();
   task_queue_.PostDelayedTask(
       std::unique_ptr<rtc::QueuedTask>(
           new InsertFrameTask(this, 1000 / framerate_fps)),
       1000 / framerate_fps);

   return true;
 }

 void FrameGeneratorCapturer::InsertFrame() {
   rtc::CritScope cs(&lock_);
   if (sending_) {
     VideoFrame* frame = frame_generator_->NextFrame();
     frame->set_timestamp_us(clock_->TimeInMicroseconds());
     frame->set_ntp_time_ms(clock_->CurrentNtpInMilliseconds());
     frame->set_rotation(fake_rotation_);
     if (first_frame_capture_time_ == -1) {
       first_frame_capture_time_ = frame->ntp_time_ms();
     }

     if (sink_) {
       rtc::Optional<VideoFrame> out_frame = AdaptFrame(*frame);
       if (out_frame)
         sink_->OnFrame(*out_frame);
     }
   }
 }

 void FrameGeneratorCapturer::Start() {
   rtc::CritScope cs(&lock_);
   sending_ = true;
 }

 void FrameGeneratorCapturer::Stop() {
   rtc::CritScope cs(&lock_);
   sending_ = false;
 }

 void FrameGeneratorCapturer::ChangeResolution(size_t width, size_t height) {
   rtc::CritScope cs(&lock_);
   frame_generator_->ChangeResolution(width, height);
 }

 void FrameGeneratorCapturer::SetSinkWantsObserver(SinkWantsObserver* observer) {
   rtc::CritScope cs(&lock_);
   RTC_DCHECK(!sink_wants_observer_);
   sink_wants_observer_ = observer;
 }

 void FrameGeneratorCapturer::AddOrUpdateSink(
     rtc::VideoSinkInterface<VideoFrame>* sink,
     const rtc::VideoSinkWants& wants) {
   rtc::CritScope cs(&lock_);
   RTC_CHECK(!sink_ || sink_ == sink);
   sink_ = sink;
   if (sink_wants_observer_)
     sink_wants_observer_->OnSinkWantsChanged(sink, wants);

   // Handle framerate within this class, just pass on resolution for possible
   // adaptation.
   rtc::VideoSinkWants resolution_wants = wants;
   resolution_wants.max_framerate_fps = std::numeric_limits<int>::max();
   VideoCapturer::AddOrUpdateSink(sink, resolution_wants);

   // Ignore any requests for framerate higher than initially configured.
   if (wants.max_framerate_fps < target_fps_) {
     wanted_fps_.emplace(wants.max_framerate_fps);
   } else {
     wanted_fps_.reset();
   }
 }

 void FrameGeneratorCapturer::RemoveSink(
     rtc::VideoSinkInterface<VideoFrame>* sink) {
   rtc::CritScope cs(&lock_);
   RTC_CHECK(sink_ == sink);
   sink_ = nullptr;
 }

 void FrameGeneratorCapturer::ForceFrame() {
   // One-time non-repeating task,
   // therefore repeat_interval_ms is 0 in InsertFrameTask()
   task_queue_.PostTask(
       std::unique_ptr<rtc::QueuedTask>(new InsertFrameTask(this, 0)));
 }

 int FrameGeneratorCapturer::GetCurrentConfiguredFramerate() {
   rtc::CritScope cs(&lock_);
   if (wanted_fps_ && *wanted_fps_ < target_fps_)
     return *wanted_fps_;
   return target_fps_;
 }

 }  // namespace test
 }  // namespace webrtc
	/*
	* 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.
	*/

	#include "webrtc/test/frame_generator_capturer.h"

	#include <utility>
	#include <vector>

	#include "webrtc/rtc_base/criticalsection.h"
	#include "webrtc/rtc_base/logging.h"
	#include "webrtc/rtc_base/platform_thread.h"
	#include "webrtc/rtc_base/task_queue.h"
	#include "webrtc/rtc_base/timeutils.h"
	#include "webrtc/system_wrappers/include/clock.h"
	#include "webrtc/test/frame_generator.h"
	#include "webrtc/call/video_send_stream.h"

	namespace webrtc {
	namespace test {

	class FrameGeneratorCapturer::InsertFrameTask : public rtc::QueuedTask {
	public:
	// Repeats in \|repeat_interval_ms\|. One-time if \|repeat_interval_ms\| == 0.
	InsertFrameTask(
	webrtc::test::FrameGeneratorCapturer* frame_generator_capturer,
	uint32_t repeat_interval_ms)
	: frame_generator_capturer_(frame_generator_capturer),
	repeat_interval_ms_(repeat_interval_ms),
	intended_run_time_ms_(-1) {}

	private:
	bool Run() override {
	bool task_completed = true;
	if (repeat_interval_ms_ > 0) {
	// This is not a one-off frame. Check if the frame interval for this
	// task queue is the same same as the current configured frame rate.
	uint32_t current_interval_ms =
	1000 / frame_generator_capturer_->GetCurrentConfiguredFramerate();
	if (repeat_interval_ms_ != current_interval_ms) {
	// Frame rate has changed since task was started, create a new instance.
	rtc::TaskQueue::Current()->PostDelayedTask(
	std::unique_ptr<rtc::QueuedTask>(new InsertFrameTask(
	frame_generator_capturer_, current_interval_ms)),
	current_interval_ms);
	} else {
	// Schedule the next frame capture event to happen at approximately the
	// correct absolute time point.
	int64_t delay_ms;
	int64_t time_now_ms = rtc::TimeMillis();
	if (intended_run_time_ms_ > 0) {
	delay_ms = time_now_ms - intended_run_time_ms_;
	} else {
	delay_ms = 0;
	intended_run_time_ms_ = time_now_ms;
	}
	intended_run_time_ms_ += repeat_interval_ms_;
	if (delay_ms < repeat_interval_ms_) {
	rtc::TaskQueue::Current()->PostDelayedTask(
	std::unique_ptr<rtc::QueuedTask>(this),
	repeat_interval_ms_ - delay_ms);
	} else {
	rtc::TaskQueue::Current()->PostDelayedTask(
	std::unique_ptr<rtc::QueuedTask>(this), 0);
	LOG(LS_ERROR)
	<< "Frame Generator Capturer can't keep up with requested fps";
	}
	// Repost of this instance, make sure it is not deleted.
	task_completed = false;
	}
	}
	frame_generator_capturer_->InsertFrame();
	// Task should be deleted only if it's not repeating.
	return task_completed;
	}

	webrtc::test::FrameGeneratorCapturer* const frame_generator_capturer_;
	const uint32_t repeat_interval_ms_;
	int64_t intended_run_time_ms_;
	};

	FrameGeneratorCapturer* FrameGeneratorCapturer::Create(int width,
	int height,
	int target_fps,
	Clock* clock) {
	std::unique_ptr<FrameGeneratorCapturer> capturer(new FrameGeneratorCapturer(
	clock, FrameGenerator::CreateSquareGenerator(width, height), target_fps));
	if (!capturer->Init())
	return nullptr;

	return capturer.release();
	}

	FrameGeneratorCapturer* FrameGeneratorCapturer::CreateFromYuvFile(
	const std::string& file_name,
	size_t width,
	size_t height,
	int target_fps,
	Clock* clock) {
	std::unique_ptr<FrameGeneratorCapturer> capturer(new FrameGeneratorCapturer(
	clock,
	FrameGenerator::CreateFromYuvFile(std::vector<std::string>(1, file_name),
	width, height, 1),
	target_fps));
	if (!capturer->Init())
	return nullptr;

	return capturer.release();
	}

	FrameGeneratorCapturer* FrameGeneratorCapturer::CreateSlideGenerator(
	int width,
	int height,
	int frame_repeat_count,
	int target_fps,
	Clock* clock) {
	std::unique_ptr<FrameGeneratorCapturer> capturer(new FrameGeneratorCapturer(
	clock, FrameGenerator::CreateSlideGenerator(width, height,
	frame_repeat_count),
	target_fps));
	if (!capturer->Init())
	return nullptr;

	return capturer.release();
	}

	FrameGeneratorCapturer::FrameGeneratorCapturer(
	Clock* clock,
	std::unique_ptr<FrameGenerator> frame_generator,
	int target_fps)
	: clock_(clock),
	sending_(false),
	sink_(nullptr),
	sink_wants_observer_(nullptr),
	frame_generator_(std::move(frame_generator)),
	target_fps_(target_fps),
	first_frame_capture_time_(-1),
	task_queue_("FrameGenCapQ",
	rtc::TaskQueue::Priority::HIGH) {
	RTC_DCHECK(frame_generator_);
	RTC_DCHECK_GT(target_fps, 0);
	}

	FrameGeneratorCapturer::~FrameGeneratorCapturer() {
	Stop();
	}

	void FrameGeneratorCapturer::SetFakeRotation(VideoRotation rotation) {
	rtc::CritScope cs(&lock_);
	fake_rotation_ = rotation;
	}

	bool FrameGeneratorCapturer::Init() {
	// This check is added because frame_generator_ might be file based and should
	// not crash because a file moved.
	if (frame_generator_.get() == nullptr)
	return false;

	int framerate_fps = GetCurrentConfiguredFramerate();
	task_queue_.PostDelayedTask(
	std::unique_ptr<rtc::QueuedTask>(
	new InsertFrameTask(this, 1000 / framerate_fps)),
	1000 / framerate_fps);

	return true;
	}

	void FrameGeneratorCapturer::InsertFrame() {
	rtc::CritScope cs(&lock_);
	if (sending_) {
	VideoFrame* frame = frame_generator_->NextFrame();
	frame->set_timestamp_us(clock_->TimeInMicroseconds());
	frame->set_ntp_time_ms(clock_->CurrentNtpInMilliseconds());
	frame->set_rotation(fake_rotation_);
	if (first_frame_capture_time_ == -1) {
	first_frame_capture_time_ = frame->ntp_time_ms();
	}

	if (sink_) {
	rtc::Optional<VideoFrame> out_frame = AdaptFrame(*frame);
	if (out_frame)
	sink_->OnFrame(*out_frame);
	}
	}
	}

	void FrameGeneratorCapturer::Start() {
	rtc::CritScope cs(&lock_);
	sending_ = true;
	}

	void FrameGeneratorCapturer::Stop() {
	rtc::CritScope cs(&lock_);
	sending_ = false;
	}

	void FrameGeneratorCapturer::ChangeResolution(size_t width, size_t height) {
	rtc::CritScope cs(&lock_);
	frame_generator_->ChangeResolution(width, height);
	}

	void FrameGeneratorCapturer::SetSinkWantsObserver(SinkWantsObserver* observer) {
	rtc::CritScope cs(&lock_);
	RTC_DCHECK(!sink_wants_observer_);
	sink_wants_observer_ = observer;
	}

	void FrameGeneratorCapturer::AddOrUpdateSink(
	rtc::VideoSinkInterface<VideoFrame>* sink,
	const rtc::VideoSinkWants& wants) {
	rtc::CritScope cs(&lock_);
	RTC_CHECK(!sink_ \|\| sink_ == sink);
	sink_ = sink;
	if (sink_wants_observer_)
	sink_wants_observer_->OnSinkWantsChanged(sink, wants);

	// Handle framerate within this class, just pass on resolution for possible
	// adaptation.
	rtc::VideoSinkWants resolution_wants = wants;
	resolution_wants.max_framerate_fps = std::numeric_limits<int>::max();
	VideoCapturer::AddOrUpdateSink(sink, resolution_wants);

	// Ignore any requests for framerate higher than initially configured.
	if (wants.max_framerate_fps < target_fps_) {
	wanted_fps_.emplace(wants.max_framerate_fps);
	} else {
	wanted_fps_.reset();
	}
	}

	void FrameGeneratorCapturer::RemoveSink(
	rtc::VideoSinkInterface<VideoFrame>* sink) {
	rtc::CritScope cs(&lock_);
	RTC_CHECK(sink_ == sink);
	sink_ = nullptr;
	}

	void FrameGeneratorCapturer::ForceFrame() {
	// One-time non-repeating task,
	// therefore repeat_interval_ms is 0 in InsertFrameTask()
	task_queue_.PostTask(
	std::unique_ptr<rtc::QueuedTask>(new InsertFrameTask(this, 0)));
	}

	int FrameGeneratorCapturer::GetCurrentConfiguredFramerate() {
	rtc::CritScope cs(&lock_);
	if (wanted_fps_ && *wanted_fps_ < target_fps_)
	return *wanted_fps_;
	return target_fps_;
	}

	} // namespace test
	} // namespace webrtc