talk/app/webrtc/androidvideocapturer.cc - platform/external/webrtc - Git at Google

 /*
  * 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.
  */
 #include "talk/app/webrtc/androidvideocapturer.h"

 #include "talk/media/webrtc/webrtcvideoframe.h"
 #include "webrtc/base/bind.h"
 #include "webrtc/base/common.h"
 #include "webrtc/base/json.h"
 #include "webrtc/base/timeutils.h"
 #include "webrtc/base/thread.h"

 namespace webrtc {

 using cricket::WebRtcVideoFrame;
 using rtc::scoped_ptr;

 // An implementation of cricket::VideoFrameFactory for frames that are not
 // guaranteed to outlive the created cricket::VideoFrame.
 // A frame is injected using UpdateCapturedFrame, and converted into a
 // cricket::VideoFrame with
 // CreateAliasedFrame. UpdateCapturedFrame should be called before
 // CreateAliasedFrame for every frame.
 class AndroidVideoCapturer::FrameFactory : public cricket::VideoFrameFactory {
  public:
   FrameFactory(int width, int height) : start_time_(rtc::TimeNanos()) {
     // Create a CapturedFrame that only contains header information, not the
     // actual pixel data.
     captured_frame_.width = width;
     captured_frame_.height = height;
     captured_frame_.pixel_height = 1;
     captured_frame_.pixel_width = 1;
     captured_frame_.rotation = 0;
     captured_frame_.data = NULL;
     captured_frame_.data_size = cricket::CapturedFrame::kUnknownDataSize;
     captured_frame_.fourcc = static_cast<uint32>(cricket::FOURCC_ANY);
   }

   void UpdateCapturedFrame(signed char* frame_data,
                            int length,
                            int rotation,
                            int64 time_stamp_in_ms) {
     captured_frame_.fourcc = static_cast<uint32>(cricket::FOURCC_NV21);
     captured_frame_.data = frame_data;
     captured_frame_.elapsed_time = rtc::TimeNanos() - start_time_;
     captured_frame_.time_stamp =
         time_stamp_in_ms * rtc::kNumNanosecsPerMillisec;
     captured_frame_.rotation = rotation;
     captured_frame_.data_size = length;
   }

   const cricket::CapturedFrame* GetCapturedFrame() const {
     return &captured_frame_;
   }

   cricket::VideoFrame* CreateAliasedFrame(
       const cricket::CapturedFrame* captured_frame,
       int dst_width,
       int dst_height) const override {
     // This override of CreateAliasedFrame creates a copy of the frame since
     // |captured_frame_.data| is only guaranteed to be valid during the scope
     // of |AndroidVideoCapturer::OnIncomingFrame_w|.
     // Check that captured_frame is actually our frame.
     DCHECK(captured_frame == &captured_frame_);
     scoped_ptr<WebRtcVideoFrame> frame(new WebRtcVideoFrame());
     frame->Init(captured_frame, dst_width, dst_height);
     return frame.release();
   }

  private:
   uint64 start_time_;
   cricket::CapturedFrame captured_frame_;
 };

 AndroidVideoCapturer::AndroidVideoCapturer(
     rtc::scoped_ptr<AndroidVideoCapturerDelegate> delegate)
     : running_(false),
       delegate_(delegate.Pass()),
       worker_thread_(NULL),
       frame_factory_(NULL),
       current_state_(cricket::CS_STOPPED){
   std::string json_string = delegate_->GetSupportedFormats();
   LOG(LS_INFO) << json_string;

   Json::Value json_values;
   Json::Reader reader(Json::Features::strictMode());
   if (!reader.parse(json_string, json_values)) {
     LOG(LS_ERROR) << "Failed to parse formats.";
   }

   std::vector<cricket::VideoFormat> formats;
   for (Json::ArrayIndex i = 0; i < json_values.size(); ++i) {
       const Json::Value& json_value = json_values[i];
       DCHECK(!json_value["width"].isNull() && !json_value["height"].isNull() &&
              !json_value["framerate"].isNull());
       cricket::VideoFormat format(
           json_value["width"].asInt(),
           json_value["height"].asInt(),
           cricket::VideoFormat::FpsToInterval(json_value["framerate"].asInt()),
           cricket::FOURCC_NV21);
       formats.push_back(format);
   }
   SetSupportedFormats(formats);
 }

 AndroidVideoCapturer::~AndroidVideoCapturer() {
   DCHECK(!running_);
 }

 cricket::CaptureState AndroidVideoCapturer::Start(
     const cricket::VideoFormat& capture_format) {
   DCHECK(!running_);
   DCHECK(worker_thread_ == nullptr || worker_thread_ == rtc::Thread::Current());
   // TODO(perkj): Better way to get a handle to the worker thread?
   worker_thread_ = rtc::Thread::Current();

   LOG(LS_INFO) << " AndroidVideoCapturer::Start w = " << capture_format.width
                << " h = " << capture_format.height;
   frame_factory_ = new AndroidVideoCapturer::FrameFactory(
       capture_format.width, capture_format.height);
   set_frame_factory(frame_factory_);

   running_ = true;
   delegate_->Start(
       capture_format.width, capture_format.height,
       cricket::VideoFormat::IntervalToFps(capture_format.interval), this);
   SetCaptureFormat(&capture_format);
   current_state_ = cricket::CS_STARTING;
   return current_state_;
 }

 void AndroidVideoCapturer::Stop() {
   DCHECK(worker_thread_->IsCurrent());
   LOG(LS_INFO) << " AndroidVideoCapturer::Stop ";
   DCHECK(running_);
   running_ = false;
   SetCaptureFormat(NULL);

   delegate_->Stop();
   current_state_ = cricket::CS_STOPPED;
   SignalStateChange(this, current_state_);
 }

 bool AndroidVideoCapturer::IsRunning() {
   return running_;
 }

 bool AndroidVideoCapturer::GetPreferredFourccs(std::vector<uint32>* fourccs) {
   fourccs->push_back(cricket::FOURCC_NV21);
   return true;
 }

 void AndroidVideoCapturer::OnCapturerStarted(bool success) {
   // This method is called from a Java thread.
   DCHECK(!worker_thread_->IsCurrent());
   worker_thread_->Invoke<void>(
       rtc::Bind(&AndroidVideoCapturer::OnCapturerStarted_w, this, success));
 }

 void AndroidVideoCapturer::OnCapturerStarted_w(bool success) {
   DCHECK(worker_thread_->IsCurrent());
   cricket::CaptureState new_state =
       success ? cricket::CS_RUNNING : cricket::CS_FAILED;
   if (new_state == current_state_)
     return;
   current_state_ = new_state;

   // TODO(perkj): SetCaptureState can not be used since it posts to |thread_|.
   // But |thread_ | is currently just the thread that happened to create the
   // cricket::VideoCapturer.
   SignalStateChange(this, new_state);
 }

 void AndroidVideoCapturer::OnIncomingFrame(signed char* videoFrame,
                                            int length,
                                            int rotation,
                                            int64 time_stamp) {
   // This method is called from a Java thread.
   DCHECK(!worker_thread_->IsCurrent());
   worker_thread_->Invoke<void>(
       rtc::Bind(&AndroidVideoCapturer::OnIncomingFrame_w, this, videoFrame,
                 length, rotation, time_stamp));
 }

 void AndroidVideoCapturer::OnIncomingFrame_w(signed char* frame_data,
                                              int length,
                                              int rotation,
                                              int64 time_stamp) {
   DCHECK(worker_thread_->IsCurrent());
   frame_factory_->UpdateCapturedFrame(frame_data, length, rotation, time_stamp);
   SignalFrameCaptured(this, frame_factory_->GetCapturedFrame());
 }

 }  // namespace webrtc
	/*
	* 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.
	*/
	#include "talk/app/webrtc/androidvideocapturer.h"

	#include "talk/media/webrtc/webrtcvideoframe.h"
	#include "webrtc/base/bind.h"
	#include "webrtc/base/common.h"
	#include "webrtc/base/json.h"
	#include "webrtc/base/timeutils.h"
	#include "webrtc/base/thread.h"

	namespace webrtc {

	using cricket::WebRtcVideoFrame;
	using rtc::scoped_ptr;

	// An implementation of cricket::VideoFrameFactory for frames that are not
	// guaranteed to outlive the created cricket::VideoFrame.
	// A frame is injected using UpdateCapturedFrame, and converted into a
	// cricket::VideoFrame with
	// CreateAliasedFrame. UpdateCapturedFrame should be called before
	// CreateAliasedFrame for every frame.
	class AndroidVideoCapturer::FrameFactory : public cricket::VideoFrameFactory {
	public:
	FrameFactory(int width, int height) : start_time_(rtc::TimeNanos()) {
	// Create a CapturedFrame that only contains header information, not the
	// actual pixel data.
	captured_frame_.width = width;
	captured_frame_.height = height;
	captured_frame_.pixel_height = 1;
	captured_frame_.pixel_width = 1;
	captured_frame_.rotation = 0;
	captured_frame_.data = NULL;
	captured_frame_.data_size = cricket::CapturedFrame::kUnknownDataSize;
	captured_frame_.fourcc = static_cast<uint32>(cricket::FOURCC_ANY);
	}

	void UpdateCapturedFrame(signed char* frame_data,
	int length,
	int rotation,
	int64 time_stamp_in_ms) {
	captured_frame_.fourcc = static_cast<uint32>(cricket::FOURCC_NV21);
	captured_frame_.data = frame_data;
	captured_frame_.elapsed_time = rtc::TimeNanos() - start_time_;
	captured_frame_.time_stamp =
	time_stamp_in_ms * rtc::kNumNanosecsPerMillisec;
	captured_frame_.rotation = rotation;
	captured_frame_.data_size = length;
	}

	const cricket::CapturedFrame* GetCapturedFrame() const {
	return &captured_frame_;
	}

	cricket::VideoFrame* CreateAliasedFrame(
	const cricket::CapturedFrame* captured_frame,
	int dst_width,
	int dst_height) const override {
	// This override of CreateAliasedFrame creates a copy of the frame since
	// \|captured_frame_.data\| is only guaranteed to be valid during the scope
	// of \|AndroidVideoCapturer::OnIncomingFrame_w\|.
	// Check that captured_frame is actually our frame.
	DCHECK(captured_frame == &captured_frame_);
	scoped_ptr<WebRtcVideoFrame> frame(new WebRtcVideoFrame());
	frame->Init(captured_frame, dst_width, dst_height);
	return frame.release();
	}

	private:
	uint64 start_time_;
	cricket::CapturedFrame captured_frame_;
	};

	AndroidVideoCapturer::AndroidVideoCapturer(
	rtc::scoped_ptr<AndroidVideoCapturerDelegate> delegate)
	: running_(false),
	delegate_(delegate.Pass()),
	worker_thread_(NULL),
	frame_factory_(NULL),
	current_state_(cricket::CS_STOPPED){
	std::string json_string = delegate_->GetSupportedFormats();
	LOG(LS_INFO) << json_string;

	Json::Value json_values;
	Json::Reader reader(Json::Features::strictMode());
	if (!reader.parse(json_string, json_values)) {
	LOG(LS_ERROR) << "Failed to parse formats.";
	}

	std::vector<cricket::VideoFormat> formats;
	for (Json::ArrayIndex i = 0; i < json_values.size(); ++i) {
	const Json::Value& json_value = json_values[i];
	DCHECK(!json_value["width"].isNull() && !json_value["height"].isNull() &&
	!json_value["framerate"].isNull());
	cricket::VideoFormat format(
	json_value["width"].asInt(),
	json_value["height"].asInt(),
	cricket::VideoFormat::FpsToInterval(json_value["framerate"].asInt()),
	cricket::FOURCC_NV21);
	formats.push_back(format);
	}
	SetSupportedFormats(formats);
	}

	AndroidVideoCapturer::~AndroidVideoCapturer() {
	DCHECK(!running_);
	}

	cricket::CaptureState AndroidVideoCapturer::Start(
	const cricket::VideoFormat& capture_format) {
	DCHECK(!running_);
	DCHECK(worker_thread_ == nullptr \|\| worker_thread_ == rtc::Thread::Current());
	// TODO(perkj): Better way to get a handle to the worker thread?
	worker_thread_ = rtc::Thread::Current();

	LOG(LS_INFO) << " AndroidVideoCapturer::Start w = " << capture_format.width
	<< " h = " << capture_format.height;
	frame_factory_ = new AndroidVideoCapturer::FrameFactory(
	capture_format.width, capture_format.height);
	set_frame_factory(frame_factory_);

	running_ = true;
	delegate_->Start(
	capture_format.width, capture_format.height,
	cricket::VideoFormat::IntervalToFps(capture_format.interval), this);
	SetCaptureFormat(&capture_format);
	current_state_ = cricket::CS_STARTING;
	return current_state_;
	}

	void AndroidVideoCapturer::Stop() {
	DCHECK(worker_thread_->IsCurrent());
	LOG(LS_INFO) << " AndroidVideoCapturer::Stop ";
	DCHECK(running_);
	running_ = false;
	SetCaptureFormat(NULL);

	delegate_->Stop();
	current_state_ = cricket::CS_STOPPED;
	SignalStateChange(this, current_state_);
	}

	bool AndroidVideoCapturer::IsRunning() {
	return running_;
	}

	bool AndroidVideoCapturer::GetPreferredFourccs(std::vector<uint32>* fourccs) {
	fourccs->push_back(cricket::FOURCC_NV21);
	return true;
	}

	void AndroidVideoCapturer::OnCapturerStarted(bool success) {
	// This method is called from a Java thread.
	DCHECK(!worker_thread_->IsCurrent());
	worker_thread_->Invoke<void>(
	rtc::Bind(&AndroidVideoCapturer::OnCapturerStarted_w, this, success));
	}

	void AndroidVideoCapturer::OnCapturerStarted_w(bool success) {
	DCHECK(worker_thread_->IsCurrent());
	cricket::CaptureState new_state =
	success ? cricket::CS_RUNNING : cricket::CS_FAILED;
	if (new_state == current_state_)
	return;
	current_state_ = new_state;

	// TODO(perkj): SetCaptureState can not be used since it posts to \|thread_\|.
	// But \|thread_ \| is currently just the thread that happened to create the
	// cricket::VideoCapturer.
	SignalStateChange(this, new_state);
	}

	void AndroidVideoCapturer::OnIncomingFrame(signed char* videoFrame,
	int length,
	int rotation,
	int64 time_stamp) {
	// This method is called from a Java thread.
	DCHECK(!worker_thread_->IsCurrent());
	worker_thread_->Invoke<void>(
	rtc::Bind(&AndroidVideoCapturer::OnIncomingFrame_w, this, videoFrame,
	length, rotation, time_stamp));
	}

	void AndroidVideoCapturer::OnIncomingFrame_w(signed char* frame_data,
	int length,
	int rotation,
	int64 time_stamp) {
	DCHECK(worker_thread_->IsCurrent());
	frame_factory_->UpdateCapturedFrame(frame_data, length, rotation, time_stamp);
	SignalFrameCaptured(this, frame_factory_->GetCapturedFrame());
	}

	} // namespace webrtc