telegram-wp/BackEnd/BackEndCapture.h at master · evgeny-nadymov/telegram-wp · GitHub

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//
// This is the source code of Telegram for Windows Phone v. 3.x.x.
// It is licensed under GNU GPL v. 2 or later.
// You should have received a copy of the license in this archive (see LICENSE).
//
// Copyright Evgeny Nadymov, 2013-present.
//
#pragma once
#include "windows.h"
#include "implements.h"
#include "ICallControllerStatusListener.h"
#include "BackEndTransport.h"
#include <Windows.Phone.Media.Capture.h>
#include <Windows.Phone.Media.Capture.Native.h>

namespace PhoneVoIPApp
{
    namespace BackEnd
    {
        public delegate void CameraLocationChangedEventHandler(PhoneVoIPApp::BackEnd::CameraLocation);

        class CaptureSampleSink :
            public Microsoft::WRL::RuntimeClass<
            Microsoft::WRL::RuntimeClassFlags<Microsoft::WRL::RuntimeClassType::ClassicCom>,
            ICameraCaptureSampleSink>
        {
            DWORD m_dwSampleCount;
            BackEndTransport ^m_transport;

        public:

            STDMETHODIMP RuntimeClassInitialize(BackEndTransport ^transportController)
            {
                m_dwSampleCount = 0;
                m_transport = transportController;
                return S_OK;
            }

            DWORD GetSampleCount()
            {
                return m_dwSampleCount;
            }

            IFACEMETHODIMP_(void)
                OnSampleAvailable(
                ULONGLONG hnsPresentationTime,
                ULONGLONG hnsSampleDuration,
                DWORD cbSample,
                BYTE* pSample)
            {
                m_dwSampleCount++;
                if (m_transport)
                {
                    m_transport->WriteVideo(pSample, cbSample, hnsPresentationTime, hnsSampleDuration);
                }
            }

            void SetTransport(BackEndTransport ^transport)
            {
                m_transport = transport;
            }
        };

        public ref class BackEndCapture sealed
        {
        public:
            // Constructor
            BackEndCapture();

            void SetTransport(BackEndTransport^ transport);

            void Start(CameraLocation cameraLocation);
            void Stop();

            void ToggleCamera();

            event CameraLocationChangedEventHandler^ CameraLocationChanged;

        private:
            // Destructor
            ~BackEndCapture();

            void InitCapture();

            void ToggleCameraThread(Windows::Foundation::IAsyncAction^ operation);

            // Has capture started?
            bool started;

            // Events to signal whether capture has stopped/started
            HANDLE hStopCompleted;
            HANDLE hStartCompleted;

            Windows::Foundation::IAsyncAction^ m_ToggleThread;

            // Transport
            BackEndTransport^ transportController;

            // Native sink and video device
            CaptureSampleSink *pVideoSink;
            IAudioVideoCaptureDeviceNative *pVideoDevice;

            Windows::Phone::Media::Capture::CameraSensorLocation cameraLocation;

            Windows::Phone::Media::Capture::AudioVideoCaptureDevice ^videoOnlyDevice;
            Windows::Foundation::IAsyncAction ^videoCaptureAction;

        };
    }
}