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Added -n argument to filter based on friendly name #3

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1f25b35
Added -n argument to filter based on friendly name
sippeangelo May 8, 2015
28649a6
Updated readme
sippeangelo May 8, 2015
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101 changes: 87 additions & 14 deletions EndPointController/EndPointController.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -15,10 +15,19 @@
// Index, Device Friendly Name
#define DEVICE_OUTPUT_FORMAT "Audio Device %d: %ws"

enum OPTION
{
OPTION_LIST_DEVICES,
OPTION_SET_BY_INDEX,
OPTION_SET_BY_FRIENDLY_NAME
};

typedef struct TGlobalState
{
HRESULT hr;
int option;
int indexFilter;
std::wstring nameFilter;
IMMDeviceEnumerator *pEnum;
IMMDeviceCollection *pDevices;
LPWSTR strDefaultDeviceID;
Expand All @@ -42,13 +51,14 @@ int _tmain(int argc, LPCWSTR argv[])
TGlobalState state;

// Process command line arguments
state.option = 0; // 0 indicates list devices.
state.option = OPTION_LIST_DEVICES;
state.strDefaultDeviceID = '\0';
state.pDeviceFormatStr = _T(DEVICE_OUTPUT_FORMAT);
state.deviceStateFilter = DEVICE_STATE_ACTIVE;

for (int i = 1; i < argc; i++)
{
LPCWSTR arg = argv[i];
if (wcscmp(argv[i], _T("--help")) == 0)
{
wprintf_s(_T("Lists active audio end-point playback devices or sets default audio end-point\n"));
Expand All @@ -58,6 +68,8 @@ int _tmain(int argc, LPCWSTR argv[])
wprintf_s(_T(" devices that are enabled.\n"));
wprintf_s(_T(" EndPointController.exe device_index Sets the default playvack device\n"));
wprintf_s(_T(" with the given index.\n"));
wprintf_s(_T(" EndPointController.exe -n friendly_name Sets the default playvack device\n"));
wprintf_s(_T(" with the given friendly name.\n"));
wprintf_s(_T("\n"));
wprintf_s(_T("OPTIONS\n"));
wprintf_s(_T(" -a Display all devices, rather than just active devices.\n"));
Expand All @@ -69,7 +81,7 @@ int _tmain(int argc, LPCWSTR argv[])
wprintf_s(_T(" - Device index (int)\n"));
wprintf_s(_T(" - Device friendly name (wstring)\n"));
wprintf_s(_T(" - Device state (int)\n"));
wprintf_s(_T(" - Device default? (1 for true 0 for false as int)\n"));
wprintf_s(_T(" - Device default? (1 for true 0 for false as int)\n"));
wprintf_s(_T(" - Device description (wstring)\n"));
wprintf_s(_T(" - Device interface friendly name (wstring)\n"));
wprintf_s(_T(" - Device ID (wstring)\n"));
Expand All @@ -96,9 +108,38 @@ int _tmain(int argc, LPCWSTR argv[])
exit(1);
}
}
else if (wcscmp(argv[i], _T("-n")) == 0)
{
if ((argc - i) >= 2) {
state.option = OPTION_SET_BY_FRIENDLY_NAME;
state.nameFilter = argv[++i];
while ((argc - i) >= 2)
{
state.nameFilter += L" " + std::wstring(argv[++i]);
}
if (state.nameFilter[0] == L'"')
{
state.nameFilter.erase(0);
}
if (state.nameFilter[state.nameFilter.length() - 1] == L'"')
{
state.nameFilter.erase(state.nameFilter.length() - 1);
}

break;
} else
{
wprintf_s(_T("Missing name string"));
exit(1);
}
}
}

if (argc == 2) state.option = _wtoi(argv[1]);
if (argc == 2)
{
state.option = OPTION_SET_BY_INDEX;
state.indexFilter = _wtoi(argv[1]);
}

state.hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
if (SUCCEEDED(state.hr))
Expand Down Expand Up @@ -138,7 +179,7 @@ void enumerateOutputDevices(TGlobalState* state)
state->pDevices->GetCount(&count);

// If option is less than 1, list devices
if (state->option < 1)
if (state->option == OPTION_LIST_DEVICES)
{

// Get default device
Expand All @@ -163,24 +204,56 @@ void enumerateOutputDevices(TGlobalState* state)
}
}
// If option corresponds with the index of an audio device, set it to default
else if (state->option <= (int)count)
else if (state->option == OPTION_SET_BY_INDEX)
{
state->hr = state->pDevices->Item(state->option - 1, &state->pCurrentDevice);
if (SUCCEEDED(state->hr))
if (state->indexFilter <= (int)count)
{
LPWSTR strID = NULL;
state->hr = state->pCurrentDevice->GetId(&strID);
state->hr = state->pDevices->Item(state->indexFilter - 1, &state->pCurrentDevice);
if (SUCCEEDED(state->hr))
{
state->hr = SetDefaultAudioPlaybackDevice(strID);
LPWSTR strID = NULL;
state->hr = state->pCurrentDevice->GetId(&strID);
if (SUCCEEDED(state->hr))
{
state->hr = SetDefaultAudioPlaybackDevice(strID);
}
state->pCurrentDevice->Release();
}
state->pCurrentDevice->Release();
}
// Otherwise inform user than option doesn't correspond with a device
else
{
wprintf_s(_T("Error: No audio end-point device with the index '%d'.\n"), state->indexFilter);
}
}
// Otherwise inform user than option doesn't correspond with a device
else
else if (state->option == OPTION_SET_BY_FRIENDLY_NAME)
{
wprintf_s(_T("Error: No audio end-point device with the index '%d'.\n"), state->option);
// Iterate all devices
for (int i = 1; i <= (int)count; i++)
{
state->hr = state->pDevices->Item(i - 1, &state->pCurrentDevice);
if (SUCCEEDED(state->hr))
{
LPWSTR strID = NULL;
state->hr = state->pCurrentDevice->GetId(&strID);
if (SUCCEEDED(state->hr))
{
IPropertyStore *pStore;
state->hr = state->pCurrentDevice->OpenPropertyStore(STGM_READ, &pStore);
if (SUCCEEDED(state->hr))
{
std::wstring friendlyName = getDeviceProperty(pStore, PKEY_Device_FriendlyName);
if (state->nameFilter == friendlyName)
{
state->hr = SetDefaultAudioPlaybackDevice(strID);
state->pCurrentDevice->Release();
break;
}
}
}
state->pCurrentDevice->Release();
}
}
}

state->pDevices->Release();
Expand Down
6 changes: 6 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,7 @@
This is a fork of [DanStevens/AudioEndPointController](https://github.com/DanStevens/AudioEndPointController),
which lets you change the default end-point by supplying the [friendly name](https://msdn.microsoft.com/en-us/library/windows/hardware/ff536394(v=vs.85).aspx)
of the device, since the relative "device index" tends to change when devices are attached/detached.

AudioEndPointController
=======================

Expand All @@ -12,6 +16,8 @@ A Windows command-line program for listing audio end-points and setting the defa
devices that are enabled.
EndPointController.exe device_index Sets the default playback device
with the given index.
EndPointController.exe -n friendly_name Sets the default playvack device
with the given friendly name.

OPTIONS
-a Display all devices, rather than just active devices.
Expand Down