bool directx_camera_server::open_and_find_parameters(const int which,
unsigned width,
unsigned height) {
auto graphbuilderRet = start_com_and_graphbuilder();
if (!graphbuilderRet) {
return false;
}
std::size_t i = 0;
auto pMoniker = find_first_capture_device_where([&i, which](IMoniker &) {
if (i == which) {
return true;
}
++i;
return false;
});
if (!pMoniker) {
fprintf(stderr, "directx_camera_server::open_and_find_parameters(): "
"Could not get the device requested - not enough "
"cameras?\n");
return false;
}
#ifdef DEBUG
std::cout << "directx_camera_server::open_and_find_parameters(): Accepted!"
<< std::endl;
#endif
return open_moniker_and_finish_setup(pMoniker, FilterOperation{}, width,
height);
}
bool directx_camera_server::open_and_find_parameters(
std::string const &pathPrefix, FilterOperation const &sourceConfig,
unsigned width, unsigned height) {
auto graphbuilderRet = start_com_and_graphbuilder();
if (!graphbuilderRet) {
return false;
}
auto pMoniker =
find_first_capture_device_where([&pathPrefix](IMoniker &mon) {
auto props = PropertyBagHelper{mon};
if (!props) {
return false;
}
auto path = getDevicePath(props);
if (path.length() < pathPrefix.length()) {
return false;
}
return (path.substr(0, pathPrefix.length()) == pathPrefix);
});
if (!pMoniker) {
fprintf(stderr, "directx_camera_server::open_and_find_parameters(): "
"Could not get the device requested - not enough "
"cameras?\n");
return false;
}
#ifdef DEBUG
std::cout << "directx_camera_server::open_and_find_parameters(): Accepted!"
<< std::endl;
#endif
return open_moniker_and_finish_setup(pMoniker, sourceConfig, width, height);
}