b29b9c8e49
This also deletes unused features of the video_capturer interface, the classes VideoCaptureFeedBack, VideoCaptureEncodeInterface and related methods, and the module id which used to be passed as an argument to the VideoCaptureDataCallback. In theory the module id could have been used to let a single VideoCaptureDataCallback serve several capturers, and demultiplex on the id, but in practice, it was unused. With this change, it is required to use a separate VideoSinkInterface for each capturer. BUG=webrtc:6789 Review-Url: https://codereview.webrtc.org/2534553002 Cr-Commit-Position: refs/heads/master@{#15540}
88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2004 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_MEDIA_ENGINE_WEBRTCVIDEOCAPTURER_H_
|
|
#define WEBRTC_MEDIA_ENGINE_WEBRTCVIDEOCAPTURER_H_
|
|
|
|
#include <memory>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "webrtc/base/asyncinvoker.h"
|
|
#include "webrtc/base/messagehandler.h"
|
|
#include "webrtc/base/scoped_ref_ptr.h"
|
|
#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
|
|
#include "webrtc/media/base/device.h"
|
|
#include "webrtc/media/base/videocapturer.h"
|
|
#include "webrtc/modules/video_capture/video_capture.h"
|
|
|
|
namespace cricket {
|
|
|
|
// Factory to allow injection of a VCM impl into WebRtcVideoCapturer.
|
|
// DeviceInfos do not have a Release() and therefore need an explicit Destroy().
|
|
class WebRtcVcmFactoryInterface {
|
|
public:
|
|
virtual ~WebRtcVcmFactoryInterface() {}
|
|
virtual rtc::scoped_refptr<webrtc::VideoCaptureModule> Create(
|
|
const char* device) = 0;
|
|
virtual webrtc::VideoCaptureModule::DeviceInfo* CreateDeviceInfo() = 0;
|
|
virtual void DestroyDeviceInfo(
|
|
webrtc::VideoCaptureModule::DeviceInfo* info) = 0;
|
|
};
|
|
|
|
// WebRTC-based implementation of VideoCapturer.
|
|
class WebRtcVideoCapturer : public VideoCapturer,
|
|
public rtc::VideoSinkInterface<webrtc::VideoFrame> {
|
|
public:
|
|
WebRtcVideoCapturer();
|
|
explicit WebRtcVideoCapturer(WebRtcVcmFactoryInterface* factory);
|
|
virtual ~WebRtcVideoCapturer();
|
|
|
|
bool Init(const Device& device);
|
|
bool Init(const rtc::scoped_refptr<webrtc::VideoCaptureModule>& module);
|
|
|
|
// Override virtual methods of the parent class VideoCapturer.
|
|
bool GetBestCaptureFormat(const VideoFormat& desired,
|
|
VideoFormat* best_format) override;
|
|
CaptureState Start(const VideoFormat& capture_format) override;
|
|
void Stop() override;
|
|
bool IsRunning() override;
|
|
bool IsScreencast() const override { return false; }
|
|
|
|
protected:
|
|
void OnSinkWantsChanged(const rtc::VideoSinkWants& wants) override;
|
|
// Override virtual methods of the parent class VideoCapturer.
|
|
bool GetPreferredFourccs(std::vector<uint32_t>* fourccs) override;
|
|
|
|
private:
|
|
// Callback when a frame is captured by camera.
|
|
void OnFrame(const webrtc::VideoFrame& frame) override;
|
|
|
|
// Used to signal captured frames on the same thread as invoked Start().
|
|
// With WebRTC's current VideoCapturer implementations, this will mean a
|
|
// thread hop, but in other implementations (e.g. Chrome) it will be called
|
|
// directly from OnIncomingCapturedFrame.
|
|
// TODO(tommi): Remove this workaround when we've updated the WebRTC capturers
|
|
// to follow the same contract.
|
|
void SignalFrameCapturedOnStartThread(const webrtc::VideoFrame& frame);
|
|
|
|
std::unique_ptr<WebRtcVcmFactoryInterface> factory_;
|
|
rtc::scoped_refptr<webrtc::VideoCaptureModule> module_;
|
|
int captured_frames_;
|
|
std::vector<uint8_t> capture_buffer_;
|
|
rtc::Thread* start_thread_; // Set in Start(), unset in Stop();
|
|
|
|
std::unique_ptr<rtc::AsyncInvoker> async_invoker_;
|
|
};
|
|
|
|
} // namespace cricket
|
|
|
|
#endif // WEBRTC_MEDIA_WEBRTC_WEBRTCVIDEOCAPTURER_H_
|