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/* Copyright (C) 2013 Mamadou DIOP
* Copyright (C) 2013 Doubango Telecom <http://www.doubango.org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO 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.
*
* DOUBANGO 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 DOUBANGO.
*/
#include "mf_devices.h"
#include "mf_utils.h"
DeviceList::DeviceList()
: m_ppDevices(NULL)
, m_cDevices(0)
{
}
DeviceList::~DeviceList()
{
Clear();
}
UINT32 DeviceList::Count()const
{
return m_cDevices;
}
void DeviceList::Clear()
{
for (UINT32 i = 0; i < m_cDevices; i++) {
SafeRelease(&m_ppDevices[i]);
}
CoTaskMemFree(m_ppDevices);
m_ppDevices = NULL;
m_cDevices = 0;
}
HRESULT DeviceList::EnumerateDevices(const GUID& sourceType)
{
HRESULT hr = S_OK;
IMFAttributes *pAttributes = NULL;
Clear();
// Initialize an attribute store. We will use this to
// specify the enumeration parameters.
hr = MFCreateAttributes(&pAttributes, 1);
// Ask for source type = video capture devices
if (SUCCEEDED(hr)) {
hr = pAttributes->SetGUID(
MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE,
sourceType
);
}
// Enumerate devices.
if (SUCCEEDED(hr)) {
hr = MFEnumDeviceSources(pAttributes, &m_ppDevices, &m_cDevices);
}
SafeRelease(&pAttributes);
return hr;
}
HRESULT DeviceList::GetDeviceAtIndex(UINT32 index, IMFActivate **ppActivate)
{
if (index >= Count()) {
return E_INVALIDARG;
}
*ppActivate = m_ppDevices[index];
(*ppActivate)->AddRef();
return S_OK;
}
HRESULT DeviceList::GetDeviceBest(IMFActivate **ppActivate, WCHAR *pszName /*= NULL*/)
{
UINT32 index = 0;
if(pszName) {
WCHAR *_pszName = NULL;
BOOL bFound = FALSE;
for(UINT32 i = 0; i < Count() && !bFound; ++i) {
if((SUCCEEDED(GetDeviceName(i, &_pszName)))) {
if(wcscmp(_pszName, pszName) == 0) {
index = i;
bFound = TRUE;
// do not break the loop because we need to free(_pszName)
}
}
if(_pszName) {
CoTaskMemFree(_pszName), _pszName = NULL;
}
}
}
return GetDeviceAtIndex(index, ppActivate);
}
// The caller must free the memory for the string by calling CoTaskMemFree
HRESULT DeviceList::GetDeviceName(UINT32 index, WCHAR **ppszName)
{
if (index >= Count()) {
return E_INVALIDARG;
}
HRESULT hr = S_OK;
hr = m_ppDevices[index]->GetAllocatedString(
MF_DEVSOURCE_ATTRIBUTE_FRIENDLY_NAME,
ppszName,
NULL
);
return hr;
}
HRESULT DeviceListAudio::EnumerateDevices()
{
// call base class function
return DeviceList::EnumerateDevices(MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_AUDCAP_GUID);
}
HRESULT DeviceListVideo::EnumerateDevices()
{
// call base class function
return DeviceList::EnumerateDevices(MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID);
}
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