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#include "camera-names.hpp"
#ifdef _WIN32
# define NO_DSHOW_STRSAFE
# include <dshow.h>
# include <cwchar>
#elif defined(__unix) || defined(__linux) || defined(__APPLE__)
# include <unistd.h>
#endif
#ifdef __linux
# include <fcntl.h>
# include <sys/ioctl.h>
# include <linux/videodev2.h>
# include <cerrno>
#endif
#include <QDebug>
OTR_COMPAT_EXPORT int camera_name_to_index(const QString &name)
{
auto list = get_camera_names();
int ret = list.indexOf(name);
if (ret < 0)
ret = 0;
return ret;
}
OTR_COMPAT_EXPORT QList<QString> get_camera_names()
{
QList<QString> ret;
#if defined(_WIN32)
// Create the System Device Enumerator.
HRESULT hr;
CoInitialize(nullptr);
ICreateDevEnum *pSysDevEnum = NULL;
hr = CoCreateInstance(CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, IID_ICreateDevEnum, (void **)&pSysDevEnum);
if (FAILED(hr))
{
qDebug() << "failed CLSID_SystemDeviceEnum" << hr;
return ret;
}
// Obtain a class enumerator for the video compressor category.
IEnumMoniker *pEnumCat = NULL;
hr = pSysDevEnum->CreateClassEnumerator(CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
if (hr == S_OK) {
// Enumerate the monikers.
IMoniker *pMoniker = NULL;
ULONG cFetched;
while (pEnumCat->Next(1, &pMoniker, &cFetched) == S_OK)
{
IPropertyBag *pPropBag;
hr = pMoniker->BindToStorage(0, 0, IID_IPropertyBag, (void **)&pPropBag);
if (SUCCEEDED(hr)) {
// To retrieve the filter's friendly name, do the following:
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->Read(L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr))
{
// Display the name in your UI somehow.
QString str((QChar*)varName.bstrVal, int(std::wcslen(varName.bstrVal)));
ret.append(str);
}
VariantClear(&varName);
////// To create an instance of the filter, do the following:
////IBaseFilter *pFilter;
////hr = pMoniker->BindToObject(NULL, NULL, IID_IBaseFilter,
//// (void**)&pFilter);
// Now add the filter to the graph.
//Remember to release pFilter later.
pPropBag->Release();
}
pMoniker->Release();
}
pEnumCat->Release();
}
else
qDebug() << "failed CLSID_VideoInputDeviceCategory" << hr;
pSysDevEnum->Release();
#endif
#ifdef __linux
for (int i = 0; i < 16; i++) {
char buf[128];
sprintf(buf, "/dev/video%d", i);
if (access(buf, F_OK) == 0)
ret.append(buf);
else
continue;
if (access(buf, R_OK | W_OK) == 0) {
int fd = open(buf, O_RDONLY);
if (fd == -1)
continue;
struct v4l2_capability video_cap;
if(ioctl(fd, VIDIOC_QUERYCAP, &video_cap) == -1)
{
qDebug() << "VIDIOC_QUERYCAP" << errno;
close(fd);
continue;
}
ret[ret.size()-1] = reinterpret_cast<const char*>(video_cap.card);
close(fd);
}
}
#endif
return ret;
}
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