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WPD: Get information about storage on WPD devices

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This commit is contained in:
Kovid Goyal 2012-08-13 07:31:54 +05:30
parent 8138a17a71
commit 37eb993044
2 changed files with 122 additions and 1 deletions
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122
src/calibre/devices/mtp/windows/device_enumeration.cpp
View File

@ -72,6 +72,119 @@ IPortableDevice *open_device(const wchar_t *pnp_id, IPortableDeviceValues *clien
} // }}}
PyObject* get_storage_info(IPortableDevice *device) {
HRESULT hr;
IPortableDeviceContent *content = NULL;
IEnumPortableDeviceObjectIDs *objects = NULL;
IPortableDeviceProperties *properties = NULL;
IPortableDeviceKeyCollection *storage_properties = NULL;
IPortableDeviceValues *values = NULL;
PyObject *ans = NULL, *storage = NULL, *so = NULL, *desc = NULL, *soid = NULL;
DWORD fetched, i;
PWSTR object_ids[10];
GUID guid;
ULONGLONG capacity, free_space, capacity_objects, free_objects;
ULONG access;
LPWSTR storage_desc = NULL;
storage = PyList_New(0);
if (storage == NULL) { PyErr_NoMemory(); goto end; }
Py_BEGIN_ALLOW_THREADS;
hr = device->Content(&content);
Py_END_ALLOW_THREADS;
if (FAILED(hr)) {hresult_set_exc("Failed to get content interface from device", hr); goto end;}
Py_BEGIN_ALLOW_THREADS;
hr = content->Properties(&properties);
Py_END_ALLOW_THREADS;
if (FAILED(hr)) {hresult_set_exc("Failed to get properties interface", hr); goto end;}
Py_BEGIN_ALLOW_THREADS;
hr = CoCreateInstance(CLSID_PortableDeviceKeyCollection, NULL,
CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&storage_properties));
Py_END_ALLOW_THREADS;
if (FAILED(hr)) {hresult_set_exc("Failed to create storage properties collection", hr); goto end;}
Py_BEGIN_ALLOW_THREADS;
hr = storage_properties->Add(WPD_OBJECT_CONTENT_TYPE);
hr = storage_properties->Add(WPD_FUNCTIONAL_OBJECT_CATEGORY);
hr = storage_properties->Add(WPD_STORAGE_DESCRIPTION);
hr = storage_properties->Add(WPD_STORAGE_CAPACITY);
hr = storage_properties->Add(WPD_STORAGE_CAPACITY_IN_OBJECTS);
hr = storage_properties->Add(WPD_STORAGE_FREE_SPACE_IN_BYTES);
hr = storage_properties->Add(WPD_STORAGE_FREE_SPACE_IN_OBJECTS);
hr = storage_properties->Add(WPD_STORAGE_ACCESS_CAPABILITY);
hr = storage_properties->Add(WPD_STORAGE_FILE_SYSTEM_TYPE);
hr = storage_properties->Add(WPD_OBJECT_NAME);
Py_END_ALLOW_THREADS;
if (FAILED(hr)) {hresult_set_exc("Failed to create collection of properties for storage query", hr); goto end; }
Py_BEGIN_ALLOW_THREADS;
hr = content->EnumObjects(0, WPD_DEVICE_OBJECT_ID, NULL, &objects);
Py_END_ALLOW_THREADS;
if (FAILED(hr)) {hresult_set_exc("Failed to get objects from device", hr); goto end;}
hr = S_OK;
while (hr == S_OK) {
Py_BEGIN_ALLOW_THREADS;
hr = objects->Next(10, object_ids, &fetched);
Py_END_ALLOW_THREADS;
if (SUCCEEDED(hr)) {
for(i = 0; i < fetched; i++) {
if SUCCEEDED(properties->GetValues(object_ids[i], storage_properties, &values)) {
if (
SUCCEEDED(values->GetGuidValue(WPD_OBJECT_CONTENT_TYPE, &guid)) && IsEqualGUID(guid, WPD_CONTENT_TYPE_FUNCTIONAL_OBJECT) &&
SUCCEEDED(values->GetGuidValue(WPD_FUNCTIONAL_OBJECT_CATEGORY, &guid)) && IsEqualGUID(guid, WPD_FUNCTIONAL_CATEGORY_STORAGE)
) {
capacity = 0; capacity_objects = 0; free_space = 0; free_objects = 0;
values->GetUnsignedLargeIntegerValue(WPD_STORAGE_CAPACITY, &capacity);
values->GetUnsignedLargeIntegerValue(WPD_STORAGE_CAPACITY_IN_OBJECTS, &capacity_objects);
values->GetUnsignedLargeIntegerValue(WPD_STORAGE_FREE_SPACE_IN_BYTES, &free_space);
values->GetUnsignedLargeIntegerValue(WPD_STORAGE_FREE_SPACE_IN_OBJECTS, &free_objects);
desc = Py_False;
if (SUCCEEDED(values->GetUnsignedIntegerValue(WPD_STORAGE_ACCESS_CAPABILITY, &access)) && access == WPD_STORAGE_ACCESS_CAPABILITY_READWRITE) desc = Py_True;
soid = PyUnicode_FromWideChar(object_ids[i], wcslen(object_ids[i]));
if (soid == NULL) { PyErr_NoMemory(); goto end; }
so = Py_BuildValue("{s:K,s:K,s:K,s:K,s:O,s:N}",
"capacity", capacity, "capacity_objects", capacity_objects, "free_space", free_space, "free_objects", free_objects, "rw", desc, "id", soid);
if (so == NULL) { PyErr_NoMemory(); goto end; }
if (SUCCEEDED(values->GetStringValue(WPD_STORAGE_DESCRIPTION, &storage_desc))) {
desc = PyUnicode_FromWideChar(storage_desc, wcslen(storage_desc));
if (desc != NULL) PyDict_SetItemString(so, "description", desc);
Py_DECREF(desc);
CoTaskMemFree(storage_desc); storage_desc = NULL;
}
if (SUCCEEDED(values->GetStringValue(WPD_OBJECT_NAME, &storage_desc))) {
desc = PyUnicode_FromWideChar(storage_desc, wcslen(storage_desc));
if (desc != NULL) PyDict_SetItemString(so, "name", desc);
Py_DECREF(desc);
CoTaskMemFree(storage_desc); storage_desc = NULL;
}
if (SUCCEEDED(values->GetStringValue(WPD_STORAGE_FILE_SYSTEM_TYPE, &storage_desc))) {
desc = PyUnicode_FromWideChar(storage_desc, wcslen(storage_desc));
if (desc != NULL) PyDict_SetItemString(so, "filesystem", desc);
Py_DECREF(desc);
CoTaskMemFree(storage_desc); storage_desc = NULL;
}
PyList_Append(storage, so);
Py_DECREF(so);
}
}
}
}
}
ans = storage;
end:
if (content != NULL) content->Release();
if (objects != NULL) objects->Release();
if (properties != NULL) properties->Release();
if (storage_properties != NULL) storage_properties->Release();
if (values != NULL) values->Release();
return ans;
}
PyObject* get_device_information(IPortableDevice *device) { // {{{
IPortableDeviceContent *content = NULL;
IPortableDeviceProperties *properties = NULL;
@ -83,7 +196,7 @@ PyObject* get_device_information(IPortableDevice *device) { // {{{
DWORD num_of_categories, i;
LPWSTR temp;
ULONG ti;
PyObject *t, *ans = NULL;
PyObject *t, *ans = NULL, *storage = NULL;
char *type;
Py_BEGIN_ALLOW_THREADS;
@ -216,6 +329,13 @@ PyObject* get_device_information(IPortableDevice *device) { // {{{
}
PyDict_SetItemString(ans, "has_storage", t);
if (t == Py_True) {
storage = get_storage_info(device);
if (storage == NULL) goto end;
PyDict_SetItemString(ans, "storage", storage);
}
end:
if (keys != NULL) keys->Release();
if (values != NULL) values->Release();

1
src/calibre/devices/mtp/windows/remote.py
View File

@ -8,6 +8,7 @@ __copyright__ = '2012, Kovid Goyal <kovid at kovidgoyal.net>'
__docformat__ = 'restructuredtext en'
import subprocess, sys, os, pprint
pprint
def build(mod='wpd'):
builder = subprocess.Popen('ssh xp_build ~/build-wpd'.split())