Revert of Add task queue to Call.

webrtc/video/vie_encoder.h

 /*
  *  Copyright (c) 2012 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 WEBRTC_VIDEO_VIE_ENCODER_H_
 #define WEBRTC_VIDEO_VIE_ENCODER_H_
 
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "webrtc/base/criticalsection.h"
-#include "webrtc/base/event.h"
-#include "webrtc/base/sequenced_task_checker.h"
-#include "webrtc/base/task_queue.h"
-#include "webrtc/call.h"
+#include "webrtc/base/scoped_ref_ptr.h"
+#include "webrtc/base/thread_annotations.h"
 #include "webrtc/common_types.h"
+#include "webrtc/video_encoder.h"
 #include "webrtc/media/base/videosinkinterface.h"
+#include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h"
 #include "webrtc/modules/video_coding/include/video_coding_defines.h"
 #include "webrtc/modules/video_coding/video_coding_impl.h"
 #include "webrtc/modules/video_processing/include/video_processing.h"
-#include "webrtc/system_wrappers/include/atomic32.h"
-#include "webrtc/video/overuse_frame_detector.h"
-#include "webrtc/video_encoder.h"
-#include "webrtc/video_send_stream.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
+class Config;
+class EncodedImageCallback;
+class OveruseFrameDetector;
+class PacedSender;
 class ProcessThread;
 class SendStatisticsProxy;
+class ViEBitrateObserver;
+class ViEEffectFilter;
+class VideoEncoder;
 
 // VieEncoder represent a video encoder that accepts raw video frames as input
 // and produces an encoded bit stream.
 // Usage:
-//  Instantiate.
-//  Call SetStartRate and SetSink.
-//  Call ConfigureEncoder with the codec settings.
-//  Provide frames to encode by calling IncomingCapturedFrame.
-//  Call Stop() when done.
-class ViEEncoder : public VideoCaptureInput,
-                   public EncodedImageCallback,
-                   public VCMSendStatisticsCallback,
-                   public CpuOveruseObserver {
+// 1. Instantiate
+// 2. Call Init
+// 3. Call RegisterExternalEncoder if available.
+// 4. Call SetEncoder with the codec settings and the object that shall receive
+//    the encoded bit stream.
+// 5. For each available raw video frame call EncodeVideoFrame.
+class ViEEncoder : public EncodedImageCallback,
+                   public VCMSendStatisticsCallback {
  public:
+  friend class ViEBitrateObserver;
+
   ViEEncoder(uint32_t number_of_cores,
+             ProcessThread* module_process_thread,
              SendStatisticsProxy* stats_proxy,
-             const webrtc::VideoSendStream::Config::EncoderSettings& settings,
-             rtc::VideoSinkInterface<VideoFrame>* pre_encode_callback,
-             LoadObserver* overuse_callback,
-             EncodedFrameObserver* encoder_timing);
+             OveruseFrameDetector* overuse_detector,
+             EncodedImageCallback* sink);
   ~ViEEncoder();
-  // RegisterProcessThread register |module_process_thread| with those objects
-  // that use it. Registration has to happen on the thread where
-  // |module_process_thread| was created (libjingle's worker thread).
-  // TODO(perkj): Replace the use of |module_process_thread| with a TaskQueue.
-  void RegisterProcessThread(ProcessThread* module_process_thread);
-  void DeRegisterProcessThread();
 
-  void SetSink(EncodedImageCallback* sink);
+  vcm::VideoSender* video_sender();
 
-  // TODO(perkj): Can we remove VideoCodec.startBitrate ?
-  void SetStartBitrate(int start_bitrate_bps);
+  // Returns the id of the owning channel.
+  int Owner() const;
 
-  void ConfigureEncoder(const VideoEncoderConfig& config,
-                        size_t max_data_payload_length);
+  // Codec settings.
+  int32_t RegisterExternalEncoder(VideoEncoder* encoder,
+                                  uint8_t pl_type,
+                                  bool internal_source);
+  int32_t DeRegisterExternalEncoder(uint8_t pl_type);
+  void SetEncoder(const VideoCodec& video_codec,
+                  size_t max_data_payload_length);
 
-  // Permanently stop encoding. After this method has returned, it is
-  // guaranteed that no encoded frames will be delivered to the sink.
-  void Stop();
+  void EncodeVideoFrame(const VideoFrame& video_frame);
+  void SendKeyFrame();
 
-  // Implements VideoCaptureInput.
-  // TODO(perkj): Refactor ViEEncoder to inherit rtc::VideoSink instead of
-  // VideoCaptureInput.
-  void IncomingCapturedFrame(const VideoFrame& video_frame) override;
+  // Returns the time when the encoder last received an input frame or produced
+  // an encoded frame.
+  int64_t time_of_last_frame_activity_ms();
 
-  void SendKeyFrame();
+
+  // Implements EncodedImageCallback.
+  EncodedImageCallback::Result OnEncodedImage(
+      const EncodedImage& encoded_image,
+      const CodecSpecificInfo* codec_specific_info,
+      const RTPFragmentationHeader* fragmentation) override;
+
+  // Implements VideoSendStatisticsCallback.
+  void SendStatistics(uint32_t bit_rate,
+                      uint32_t frame_rate,
+                      const std::string& encoder_name) override;
 
   // virtual to test EncoderStateFeedback with mocks.
   virtual void OnReceivedIntraFrameRequest(size_t stream_index);
   virtual void OnReceivedSLI(uint8_t picture_id);
   virtual void OnReceivedRPSI(uint64_t picture_id);
 
   void OnBitrateUpdated(uint32_t bitrate_bps,
                         uint8_t fraction_lost,
                         int64_t round_trip_time_ms);
 
  private:
-  class EncodeTask;
-
-  void ConfigureEncoderInternal(const VideoCodec& video_codec,
-                                size_t max_data_payload_length);
-
-  // Implements VideoSendStatisticsCallback.
-  void SendStatistics(uint32_t bit_rate,
-                      uint32_t frame_rate,
-                      const std::string& encoder_name) override;
-
-  void EncodeVideoFrame(const VideoFrame& frame);
-
-  // Implements EncodedImageCallback.
-  EncodedImageCallback::Result OnEncodedImage(
-      const EncodedImage& encoded_image,
-      const CodecSpecificInfo* codec_specific_info,
-      const RTPFragmentationHeader* fragmentation) override;
-
-  // webrtc::CpuOveruseObserver implementation.
-  void OveruseDetected() override;
-  void NormalUsage() override;
-
-  bool EncoderPaused() const;
-  void TraceFrameDropStart();
-  void TraceFrameDropEnd();
-
-  rtc::Event shutdown_event_;
+  bool EncoderPaused() const EXCLUSIVE_LOCKS_REQUIRED(data_cs_);
+  void TraceFrameDropStart() EXCLUSIVE_LOCKS_REQUIRED(data_cs_);
+  void TraceFrameDropEnd() EXCLUSIVE_LOCKS_REQUIRED(data_cs_);
 
   const uint32_t number_of_cores_;
-  EncodedImageCallback* sink_;
-  const VideoSendStream::Config::EncoderSettings settings_;
+  EncodedImageCallback* const sink_;
 
   const std::unique_ptr<VideoProcessing> vp_;
-  vcm::VideoSender video_sender_ ACCESS_ON(&encoder_queue_);
-  OveruseFrameDetector overuse_detector_;
-  LoadObserver* const load_observer_ ACCESS_ON(&module_process_thread_checker_);
+  vcm::VideoSender video_sender_;
+
+  rtc::CriticalSection data_cs_;
 
   SendStatisticsProxy* const stats_proxy_;
-  rtc::VideoSinkInterface<VideoFrame>* const pre_encode_callback_;
+  OveruseFrameDetector* const overuse_detector_;
+
+  // The time we last received an input frame or encoded frame. This is used to
+  // track when video is stopped long enough that we also want to stop sending
+  // padding.
+  int64_t time_of_last_frame_activity_ms_ GUARDED_BY(data_cs_);
+  VideoCodec encoder_config_ GUARDED_BY(data_cs_);
+  uint32_t last_observed_bitrate_bps_ GUARDED_BY(data_cs_);
+  bool encoder_paused_and_dropped_frame_ GUARDED_BY(data_cs_);
+
   ProcessThread* module_process_thread_;
-  rtc::ThreadChecker module_process_thread_checker_;
 
-  VideoCodec encoder_config_ ACCESS_ON(&encoder_queue_);
+  bool has_received_sli_ GUARDED_BY(data_cs_);
+  uint8_t picture_id_sli_ GUARDED_BY(data_cs_);
+  bool has_received_rpsi_ GUARDED_BY(data_cs_);
+  uint64_t picture_id_rpsi_ GUARDED_BY(data_cs_);
 
-  int encoder_start_bitrate_bps_ ACCESS_ON(&encoder_queue_);
-  uint32_t last_observed_bitrate_bps_ ACCESS_ON(&encoder_queue_);
-  bool encoder_paused_and_dropped_frame_ ACCESS_ON(&encoder_queue_);
-  bool has_received_sli_ ACCESS_ON(&encoder_queue_);
-  uint8_t picture_id_sli_ ACCESS_ON(&encoder_queue_);
-  bool has_received_rpsi_ ACCESS_ON(&encoder_queue_);
-  uint64_t picture_id_rpsi_ ACCESS_ON(&encoder_queue_);
-  Clock* const clock_;
-
-  rtc::RaceChecker incoming_frame_race_checker_;
-  Atomic32 posted_frames_waiting_for_encode_;
-  // Used to make sure incoming time stamp is increasing for every frame.
-  int64_t last_captured_timestamp_ GUARDED_BY(incoming_frame_race_checker_);
-  // Delta used for translating between NTP and internal timestamps.
-  const int64_t delta_ntp_internal_ms_;
-
-  // All public methods are proxied to |encoder_queue_|. It must must be
-  // destroyed first to make sure no tasks are run that use other members.
-  rtc::TaskQueue encoder_queue_;
+  bool video_suspended_ GUARDED_BY(data_cs_);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIE_ENCODER_H_