Windows-Camera/Samples/ExtendedControlAndMetadata/CPP-CLI_MediaCaptureSampleExtendedControl/CustomExtendedProperty.cpp at master · microsoft/Windows-Camera · GitHub

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//*********************************************************
//
// Copyright (c) Microsoft. All rights reserved.
// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
//
//*********************************************************

//
// CustomExtendedProperty.cpp
//

#include "pch.h"
#include "CustomExtendedProperty.h"

using namespace CustomExtendedProperties;

template<typename T>
CustomExtendedProperty<T>::~CustomExtendedProperty()

{
    m_pExtPropHeader = nullptr;
    m_pExtPropValue = nullptr;
    m_cbData = 0;
    if (m_pbData)
    {
        free(m_pbData);
        m_pbData = nullptr;
    }
}

template<typename T>
CustomExtendedProperty<T>::CustomExtendedProperty(Platform::String^ strPropId, BYTE* pbData, DWORD cbData) :
    m_pbData(nullptr)
    , m_cbData(0)
    , m_pExtPropHeader(nullptr)
    , m_pExtPropValue(nullptr)
{
    m_pbData = (BYTE*)malloc(cbData);
    if (m_pbData == nullptr)
    {
        return;
    }
    CopyMemory(m_pbData, pbData, cbData);

    m_strPropId = strPropId;
    m_cbData = cbData;
    m_pExtPropHeader = (KSCAMERA_EXTENDEDPROP_HEADER*)m_pbData;
    m_pExtPropHeader->Version = KSCAMERA_EXTENDEDPROP_VERSION;
    m_pExtPropHeader->Size = sizeof(KSCAMERA_EXTENDEDPROP_HEADER) + sizeof(T);
    m_pExtPropValue = (T*)(m_pbData + sizeof(KSCAMERA_EXTENDEDPROP_HEADER));
}


template<typename T>
Platform::Array<unsigned char>^ CustomExtendedProperty<T>::GetData()
{
    Platform::Array<unsigned char>^ spArr = ref new Platform::Array<unsigned char>(m_pbData, m_cbData);
    return spArr;
}

HRESULT ExtendedPropertyValueHelper::SetDeviceProperty(Windows::Media::Devices::VideoDeviceController^ vdc, Platform::String^ strPropId, CustomExtendedProperty<KSCAMERA_EXTENDEDPROP_VALUE>* pControl)
{
    return CExtendedPropertyHelperBase<KSCAMERA_EXTENDEDPROP_VALUE>::SetDeviceProperty(vdc, strPropId, pControl);
}

HRESULT ExtendedPropertyValueHelper::GetDeviceProperty(Windows::Media::Devices::VideoDeviceController^ vdc, Platform::String^ strPropId, CustomExtendedProperty<KSCAMERA_EXTENDEDPROP_VALUE>** ppControl)
{
    return CExtendedPropertyHelperBase<KSCAMERA_EXTENDEDPROP_VALUE>::GetDeviceProperty(vdc, strPropId, ppControl);
}

HRESULT ExtendedPropertyVideoProcSettingHelper::SetDeviceProperty(Windows::Media::Devices::VideoDeviceController^ vdc, Platform::String^ strPropId, CustomExtendedProperty<KSCAMERA_EXTENDEDPROP_VIDEOPROCSETTING>* pControl)
{
    return CExtendedPropertyHelperBase<KSCAMERA_EXTENDEDPROP_VIDEOPROCSETTING>::SetDeviceProperty(vdc, strPropId, pControl);
}

HRESULT ExtendedPropertyVideoProcSettingHelper::GetDeviceProperty(Windows::Media::Devices::VideoDeviceController^ vdc, Platform::String^ strPropId, CustomExtendedProperty<KSCAMERA_EXTENDEDPROP_VIDEOPROCSETTING>** ppControl)
{
    return CExtendedPropertyHelperBase<KSCAMERA_EXTENDEDPROP_VIDEOPROCSETTING>::GetDeviceProperty(vdc, strPropId, ppControl);
}

template<typename T>
HRESULT CExtendedPropertyHelperBase<T>::SetDeviceProperty(Windows::Media::Devices::VideoDeviceController^ vdc, Platform::String^ strPropId, CustomExtendedProperty<T>* pControl)
{
    HRESULT hr = S_OK;
    if (nullptr == vdc || nullptr == pControl)
    {
        return E_INVALIDARG;
    }

    try
    {
        Platform::Array<unsigned char>^ spArr = pControl->GetData();
        Platform::Object^ spObj = Windows::Foundation::PropertyValue::CreateUInt8Array(spArr);
        vdc->SetDeviceProperty(strPropId, spObj);
    }
    catch (Platform::Exception ^ e)
    {
        hr = e->HResult;
    }

    return hr;
}

template<typename T>
HRESULT CExtendedPropertyHelperBase<T>::GetDeviceProperty(Windows::Media::Devices::VideoDeviceController^ vdc, Platform::String^ strPropId, CustomExtendedProperty<T>** ppControl)
{
    HRESULT hr = S_OK;
    if (nullptr == vdc || nullptr == ppControl)
    {
        return E_INVALIDARG;
    }

    try
    {
        Platform::Array<unsigned char>^ spVal;
        Windows::Foundation::IPropertyValue^ propertyValue = static_cast<Windows::Foundation::IPropertyValue^>(vdc->GetDeviceProperty(strPropId));
        propertyValue->GetUInt8Array(&spVal);

        hr = CustomExtendedProperty<T>::CreateCustomExtendedProperty(strPropId, spVal->Data, spVal->Length, ppControl);
    }
    catch (Platform::Exception ^ e)
    {
        hr = e->HResult;
    }

    return hr;
}