/* akvirtualcamera, virtual camera for Mac and Windows.
 * Copyright (C) 2020  Gonzalo Exequiel Pedone
 *
 * akvirtualcamera is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * akvirtualcamera is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with akvirtualcamera. If not, see <http://www.gnu.org/licenses/>.
 *
 * Web-Site: http://webcamoid.github.io/
 */

#include <vector>
#include <ddraw.h>
#include <initguid.h>
#include <uuids.h>

#include "specifypropertypages.h"
#include "basefilter.h"
#include "pin.h"
#include "PlatformUtils/src/utils.h"
#include "VCamUtils/src/utils.h"

namespace AkVCam
{
    class SpecifyPropertyPagesPrivate
    {
        public:
            IPin *m_pin {nullptr};
    };
}

AkVCam::SpecifyPropertyPages::SpecifyPropertyPages(IPin *pin):
    CUnknown(this, IID_ISpecifyPropertyPages)
{
    this->d = new SpecifyPropertyPagesPrivate;
    this->d->m_pin = pin;
    this->d->m_pin->AddRef();
}

AkVCam::SpecifyPropertyPages::~SpecifyPropertyPages()
{
    this->d->m_pin->Release();
    delete this->d;
}

HRESULT AkVCam::SpecifyPropertyPages::GetPages(CAUUID *pPages)
{
    AkLogFunction();

    if (!pPages)
        return E_POINTER;

    std::vector<GUID> pages {
        CLSID_VideoProcAmpPropertyPage,
    };

    IPin *pin = nullptr;

    if (SUCCEEDED(this->d->m_pin->ConnectedTo(&pin))) {
        auto cpin = dynamic_cast<Pin *>(this->d->m_pin);
        FILTER_STATE state = State_Stopped;
        cpin->baseFilter()->GetState(0, &state);

        if (state == State_Stopped)
            pages.push_back(CLSID_VideoStreamConfigPropertyPage);

        pin->Release();
    }

    pPages->cElems = ULONG(pages.size());
    pPages->pElems =
            reinterpret_cast<GUID *>(CoTaskMemAlloc(sizeof(GUID) * pages.size()));
    AkLogInfo() << "Returning property pages:" << std::endl;

    for (size_t i = 0; i < pages.size(); i++) {
        memcpy(&pPages->pElems[i], &pages[i], sizeof(GUID));
        AkLogInfo() << "    " << stringFromClsid(pages[i]) << std::endl;
    }

    return S_OK;
}