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WPD enumeration: Check if the device has storage

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Kovid Goyal 2012-08-12 09:09:49 +05:30
parent baa7256c5e
commit 429da054e4
1 changed files with 34 additions and 0 deletions
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34
src/calibre/devices/mtp/windows/device_enumeration.cpp
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@ -77,7 +77,10 @@ PyObject* get_device_information(IPortableDevice *device) { // {{{
IPortableDeviceProperties *properties = NULL;
IPortableDeviceKeyCollection *keys = NULL;
IPortableDeviceValues *values = NULL;
IPortableDeviceCapabilities *capabilities = NULL;
IPortableDevicePropVariantCollection *categories = NULL;
HRESULT hr;
DWORD num_of_categories, i;
LPWSTR temp;
ULONG ti;
PyObject *t, *ans = NULL;
@ -117,6 +120,21 @@ PyObject* get_device_information(IPortableDevice *device) { // {{{
Py_END_ALLOW_THREADS;
if(FAILED(hr)) {hresult_set_exc("Failed to get device info", hr); goto end; }
Py_BEGIN_ALLOW_THREADS;
hr = device->Capabilities(&capabilities);
Py_END_ALLOW_THREADS;
if(FAILED(hr)) {hresult_set_exc("Failed to get device capabilities", hr); goto end; }
Py_BEGIN_ALLOW_THREADS;
hr = capabilities->GetFunctionalCategories(&categories);
Py_END_ALLOW_THREADS;
if(FAILED(hr)) {hresult_set_exc("Failed to get device functional categories", hr); goto end; }
Py_BEGIN_ALLOW_THREADS;
hr = categories->GetCount(&num_of_categories);
Py_END_ALLOW_THREADS;
if(FAILED(hr)) {hresult_set_exc("Failed to get device functional categories number", hr); goto end; }
ans = PyDict_New();
if (ans == NULL) {PyErr_NoMemory(); goto end;}
@ -184,11 +202,27 @@ PyObject* get_device_information(IPortableDevice *device) { // {{{
CoTaskMemFree(temp);
}
t = Py_False;
for (i = 0; i < num_of_categories; i++) {
PROPVARIANT pv;
PropVariantInit(&pv);
if (SUCCEEDED(categories->GetAt(i, &pv)) && pv.puuid != NULL) {
if (IsEqualGUID(WPD_FUNCTIONAL_CATEGORY_STORAGE, *pv.puuid)) {
t = Py_True;
}
}
PropVariantClear(&pv);
if (t == Py_True) break;
}
PyDict_SetItemString(ans, "has_storage", t);
end:
if (keys != NULL) keys->Release();
if (values != NULL) values->Release();
if (properties != NULL) properties->Release();
if (content != NULL) content->Release();
if (capabilities != NULL) capabilities->Release();
if (categories != NULL) categories->Release();
return ans;
} // }}}