Initialize VideoEncoder objects asynchronously.

webrtc/video/video_capture_input.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_VIDEO_CAPTURE_INPUT_H_
 #define WEBRTC_VIDEO_VIDEO_CAPTURE_INPUT_H_
 
 #include <vector>
 
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/base/event.h"
+#include "webrtc/base/optional.h"
 #include "webrtc/base/platform_thread.h"
 #include "webrtc/base/scoped_ptr.h"
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/common_types.h"
 #include "webrtc/engine_configurations.h"
 #include "webrtc/modules/video_capture/video_capture.h"
 #include "webrtc/modules/video_coding/include/video_codec_interface.h"
 #include "webrtc/modules/video_coding/include/video_coding.h"
 #include "webrtc/modules/video_processing/include/video_processing.h"
 #include "webrtc/system_wrappers/include/critical_section_wrapper.h"
 #include "webrtc/typedefs.h"
 #include "webrtc/video_send_stream.h"
 
 namespace webrtc {
 
 class Config;
 class CpuOveruseMetricsObserver;
 class CpuOveruseObserver;
 class CriticalSectionWrapper;
 class OveruseFrameDetector;
 class ProcessThread;
 class RegistrableCpuOveruseMetricsObserver;
 class SendStatisticsProxy;
+class VideoCodingModule;
 class VideoRenderer;
 
 class VideoCaptureCallback {
  public:
   virtual ~VideoCaptureCallback() {}
 
   virtual void DeliverFrame(VideoFrame video_frame) = 0;
 };
 
 namespace internal {
+
+class VideoSendStream;
 class VideoCaptureInput : public webrtc::VideoCaptureInput {
  public:
   VideoCaptureInput(ProcessThread* module_process_thread,
                     VideoCaptureCallback* frame_callback,
-                    VideoRenderer* local_renderer,
+                    VideoCodingModule* vcm,
+                    VideoSendStream* video_send_stream,
+                    const webrtc::VideoSendStream::Config& config,
                     SendStatisticsProxy* send_stats_proxy,
-                    CpuOveruseObserver* overuse_observer,
-                    EncodingTimeObserver* encoding_time_observer);
+                    CpuOveruseObserver* overuse_observer);
   ~VideoCaptureInput();
 
   void IncomingCapturedFrame(const VideoFrame& video_frame) override;
+  void TriggerSetSendCodec(const VideoCodec& video_codec);
 
  private:
   // Thread functions for deliver captured frames to receivers.
   static bool EncoderThreadFunction(void* obj);
   bool EncoderProcess();
 
   rtc::scoped_ptr<CriticalSectionWrapper> capture_cs_;
   ProcessThread* const module_process_thread_;
 
   VideoCaptureCallback* const frame_callback_;
-  VideoRenderer* const local_renderer_;
+  VideoCodingModule* const vcm_;
+  VideoSendStream* const video_send_stream_;
+  const webrtc::VideoSendStream::Config config_;
+  bool encoder_registered_;
   SendStatisticsProxy* const stats_proxy_;
 
-  // Frame used in IncomingFrameI420.
-  rtc::scoped_ptr<CriticalSectionWrapper> incoming_frame_cs_;
-  VideoFrame incoming_frame_;
-
   rtc::PlatformThread encoder_thread_;
   rtc::Event capture_event_;
 
   volatile int stop_;
 
-  VideoFrame captured_frame_ GUARDED_BY(capture_cs_.get());
+  rtc::Optional<VideoCodec> replacement_codec_settings_ GUARDED_BY(capture_cs_);
+  VideoFrame captured_frame_ GUARDED_BY(capture_cs_);
   // Used to make sure incoming time stamp is increasing for every frame.
   int64_t last_captured_timestamp_;
   // Delta used for translating between NTP and internal timestamps.
   const int64_t delta_ntp_internal_ms_;
 
   rtc::scoped_ptr<OveruseFrameDetector> overuse_detector_;
-  EncodingTimeObserver* const encoding_time_observer_;
 };
 
 }  // namespace internal
 }  // namespace webrtc
 
 #endif  // WEBRTC_VIDEO_VIDEO_CAPTURE_INPUT_H_