109 lines
3.8 KiB
C++
109 lines
3.8 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_VIDEO_CAPTURE_MAIN_SOURCE_VIDEO_CAPTURE_IMPL_H_
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#define MODULES_VIDEO_CAPTURE_MAIN_SOURCE_VIDEO_CAPTURE_IMPL_H_
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/*
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* video_capture_impl.h
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*/
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#include <stddef.h>
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#include <stdint.h>
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#include "api/scoped_refptr.h"
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#include "api/video/video_frame.h"
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#include "api/video/video_rotation.h"
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#include "api/video/video_sink_interface.h"
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#include "modules/video_capture/video_capture.h"
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#include "modules/video_capture/video_capture_config.h"
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#include "modules/video_capture/video_capture_defines.h"
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#include "rtc_base/synchronization/mutex.h"
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namespace webrtc {
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namespace videocapturemodule {
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// Class definitions
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class VideoCaptureImpl : public VideoCaptureModule {
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public:
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/*
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* Create a video capture module object
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*
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* id - unique identifier of this video capture module object
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* deviceUniqueIdUTF8 - name of the device. Available names can be found by
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* using GetDeviceName
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*/
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static rtc::scoped_refptr<VideoCaptureModule> Create(
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const char* deviceUniqueIdUTF8);
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static DeviceInfo* CreateDeviceInfo();
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// Helpers for converting between (integral) degrees and
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// VideoRotation values. Return 0 on success.
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static int32_t RotationFromDegrees(int degrees, VideoRotation* rotation);
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static int32_t RotationInDegrees(VideoRotation rotation, int* degrees);
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// Call backs
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void RegisterCaptureDataCallback(
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rtc::VideoSinkInterface<VideoFrame>* dataCallback) override;
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void DeRegisterCaptureDataCallback() override;
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int32_t SetCaptureRotation(VideoRotation rotation) override;
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bool SetApplyRotation(bool enable) override;
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bool GetApplyRotation() override;
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const char* CurrentDeviceName() const override;
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// |capture_time| must be specified in NTP time format in milliseconds.
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int32_t IncomingFrame(uint8_t* videoFrame,
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size_t videoFrameLength,
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const VideoCaptureCapability& frameInfo,
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int64_t captureTime = 0);
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// Platform dependent
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int32_t StartCapture(const VideoCaptureCapability& capability) override;
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int32_t StopCapture() override;
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bool CaptureStarted() override;
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int32_t CaptureSettings(VideoCaptureCapability& /*settings*/) override;
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protected:
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VideoCaptureImpl();
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~VideoCaptureImpl() override;
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char* _deviceUniqueId; // current Device unique name;
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Mutex api_lock_;
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VideoCaptureCapability _requestedCapability; // Should be set by platform
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// dependent code in
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// StartCapture.
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private:
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void UpdateFrameCount();
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uint32_t CalculateFrameRate(int64_t now_ns);
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int32_t DeliverCapturedFrame(VideoFrame& captureFrame);
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// last time the module process function was called.
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int64_t _lastProcessTimeNanos;
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// last time the frame rate callback function was called.
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int64_t _lastFrameRateCallbackTimeNanos;
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rtc::VideoSinkInterface<VideoFrame>* _dataCallBack;
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int64_t _lastProcessFrameTimeNanos;
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// timestamp for local captured frames
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int64_t _incomingFrameTimesNanos[kFrameRateCountHistorySize];
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VideoRotation _rotateFrame; // Set if the frame should be rotated by the
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// capture module.
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// Indicate whether rotation should be applied before delivered externally.
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bool apply_rotation_;
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};
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} // namespace videocapturemodule
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} // namespace webrtc
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#endif // MODULES_VIDEO_CAPTURE_MAIN_SOURCE_VIDEO_CAPTURE_IMPL_H_
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