Mark Harmstone : winealsa: Implement GetPropValue and return device path.
Alexandre Julliard
julliard at wine.codeweavers.com
Thu Dec 4 16:01:09 CST 2014
Module: wine
Branch: master
Commit: a73669aed8d21fa68cef46ec75062ca4dcdcab07
URL: http://source.winehq.org/git/wine.git/?a=commit;h=a73669aed8d21fa68cef46ec75062ca4dcdcab07
Author: Mark Harmstone <hellas at burntcomma.com>
Date: Thu Dec 4 17:59:20 2014 +0000
winealsa: Implement GetPropValue and return device path.
---
dlls/winealsa.drv/mmdevdrv.c | 108 ++++++++++++++++++++++++++++++++++++
dlls/winealsa.drv/winealsa.drv.spec | 1 +
2 files changed, 109 insertions(+)
diff --git a/dlls/winealsa.drv/mmdevdrv.c b/dlls/winealsa.drv/mmdevdrv.c
index 5ad72f9..827cdd8 100644
--- a/dlls/winealsa.drv/mmdevdrv.c
+++ b/dlls/winealsa.drv/mmdevdrv.c
@@ -3823,3 +3823,111 @@ HRESULT WINAPI AUDDRV_GetAudioSessionManager(IMMDevice *device,
return S_OK;
}
+
+enum AudioDeviceConnectionType {
+ AudioDeviceConnectionType_Unknown = 0,
+ AudioDeviceConnectionType_PCI,
+ AudioDeviceConnectionType_USB
+};
+
+HRESULT WINAPI AUDDRV_GetPropValue(GUID *guid, const PROPERTYKEY *prop, PROPVARIANT *out)
+{
+ static const PROPERTYKEY devicepath_key = { /* undocumented? - {b3f8fa53-0004-438e-9003-51a46e139bfc},2 */
+ {0xb3f8fa53, 0x0004, 0x438e, {0x90, 0x03, 0x51, 0xa4, 0x6e, 0x13, 0x9b, 0xfc}}, 2
+ };
+
+ TRACE("%s, (%s,%u), %p\n", wine_dbgstr_guid(guid), wine_dbgstr_guid(&prop->fmtid), prop->pid, out);
+
+ if(IsEqualPropertyKey(*prop, devicepath_key))
+ {
+ char name[256], uevent[MAX_PATH];
+ EDataFlow flow;
+ FILE *fuevent;
+ int card, device;
+
+ if(!get_alsa_name_by_guid(guid, name, sizeof(name), &flow))
+ {
+ WARN("Unknown interface %s\n", debugstr_guid(guid));
+ return E_NOINTERFACE;
+ }
+
+ /* only implemented for identifiable devices, i.e. not "default" */
+ if(!sscanf(name, "plughw:%u,%u", &card, &device))
+ return E_NOTIMPL;
+
+ sprintf(uevent, "/sys/class/sound/card%u/device/uevent", card);
+ fuevent = fopen(uevent, "r");
+
+ if(fuevent){
+ enum AudioDeviceConnectionType connection = AudioDeviceConnectionType_Unknown;
+ USHORT vendor_id = 0, product_id = 0;
+ char line[256];
+
+ while (fgets(line, sizeof(line), fuevent)) {
+ char *val;
+ size_t val_len;
+
+ if((val = strchr(line, '='))) {
+ val[0] = 0;
+ val++;
+
+ val_len = strlen(val);
+ if(val_len > 0 && val[val_len - 1] == '\n') { val[val_len - 1] = 0; }
+
+ if(!strcmp(line, "PCI_ID")){
+ connection = AudioDeviceConnectionType_PCI;
+ if(sscanf(val, "%hX:%hX", &vendor_id, &product_id)<2){
+ WARN("Unexpected input when reading PCI_ID in uevent file.\n");
+ connection = AudioDeviceConnectionType_Unknown;
+ break;
+ }
+ }else if(!strcmp(line, "DEVTYPE") && !strcmp(val,"usb_interface"))
+ connection = AudioDeviceConnectionType_USB;
+ else if(!strcmp(line, "PRODUCT"))
+ if(sscanf(val, "%hx/%hx/", &vendor_id, &product_id)<2){
+ WARN("Unexpected input when reading PRODUCT in uevent file.\n");
+ connection = AudioDeviceConnectionType_Unknown;
+ break;
+ }
+ }
+ }
+
+ fclose(fuevent);
+
+ if(connection == AudioDeviceConnectionType_USB || connection == AudioDeviceConnectionType_PCI){
+ static const WCHAR usbformatW[] = { '{','1','}','.','U','S','B','\\','V','I','D','_',
+ '%','0','4','X','&','P','I','D','_','%','0','4','X','\\',
+ '%','u','&','%','0','8','X',0 }; /* "{1}.USB\VID_%04X&PID_%04X\%u&%08X" */
+ static const WCHAR pciformatW[] = { '{','1','}','.','H','D','A','U','D','I','O','\\','F','U','N','C','_','0','1','&',
+ 'V','E','N','_','%','0','4','X','&','D','E','V','_',
+ '%','0','4','X','\\','%','u','&','%','0','8','X',0 }; /* "{1}.HDAUDIO\FUNC_01&VEN_%04X&DEV_%04X\%u&%08X" */
+ UINT serial_number;
+
+ /* As hardly any audio devices have serial numbers, Windows instead
+ appears to use a persistent random number. We emulate this here
+ by instead using the last 8 hex digits of the GUID. */
+ serial_number = (guid->Data4[4] << 24) | (guid->Data4[5] << 16) | (guid->Data4[6] << 8) | guid->Data4[7];
+
+ out->vt = VT_LPWSTR;
+ out->u.pwszVal = CoTaskMemAlloc(128 * sizeof(WCHAR));
+
+ if(!out->u.pwszVal)
+ return E_OUTOFMEMORY;
+
+ if(connection == AudioDeviceConnectionType_USB)
+ sprintfW( out->u.pwszVal, usbformatW, vendor_id, product_id, device, serial_number);
+ else if(connection == AudioDeviceConnectionType_PCI)
+ sprintfW( out->u.pwszVal, pciformatW, vendor_id, product_id, device, serial_number);
+
+ return S_OK;
+ }
+ }else{
+ WARN("Could not open %s for reading\n", uevent);
+ return E_NOTIMPL;
+ }
+ }
+
+ TRACE("Unimplemented property %s,%u\n", wine_dbgstr_guid(&prop->fmtid), prop->pid);
+
+ return E_NOTIMPL;
+}
diff --git a/dlls/winealsa.drv/winealsa.drv.spec b/dlls/winealsa.drv/winealsa.drv.spec
index 04fa05a..bd83ea2 100644
--- a/dlls/winealsa.drv/winealsa.drv.spec
+++ b/dlls/winealsa.drv/winealsa.drv.spec
@@ -8,3 +8,4 @@
@ stdcall -private GetEndpointIDs(long ptr ptr ptr ptr) AUDDRV_GetEndpointIDs
@ stdcall -private GetAudioEndpoint(ptr ptr ptr) AUDDRV_GetAudioEndpoint
@ stdcall -private GetAudioSessionManager(ptr ptr) AUDDRV_GetAudioSessionManager
+@ stdcall -private GetPropValue(ptr ptr ptr) AUDDRV_GetPropValue
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