[janderwald] 45582: [MMIXER, WDMAUD_KERNEL] - Implement retrieving device path

Author: janderwald
Date: Fri Feb 12 07:18:31 2010
New Revision: 45582

URL: http://svn.reactos.org/svn/reactos?rev=45582&view=rev
Log:
[MMIXER, WDMAUD_KERNEL]
- Implement retrieving device path

Modified:
    trunk/reactos/drivers/wdm/audio/legacy/wdmaud/mmixer.c
    trunk/reactos/lib/drivers/sound/mmixer/mmixer.h
    trunk/reactos/lib/drivers/sound/mmixer/wave.c

Modified: trunk/reactos/drivers/wdm/audio/legacy/wdmaud/mmixer.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/wdm/audio/legacy/wd...
==============================================================================
--- trunk/reactos/drivers/wdm/audio/legacy/wdmaud/mmixer.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/wdm/audio/legacy/wdmaud/mmixer.c [iso-8859-1] Fri Feb 12 07:18:31 2010
@@ -551,10 +551,12 @@
 WdmAudGetPnpNameByIndexAndType(
     IN ULONG DeviceIndex, 
     IN SOUND_DEVICE_TYPE DeviceType, 
-    OUT LPWSTR *Device)
-{
-    UNIMPLEMENTED
-    return STATUS_NOT_IMPLEMENTED;
+    OUT LPWSTR *DevicePath)
+{
+    if (MMixerGetWaveDevicePath(&MixerContext, DeviceType == WAVE_IN_DEVICE_TYPE, DeviceIndex, DevicePath) == MM_STATUS_SUCCESS)
+        return STATUS_SUCCESS;
+    else
+        return STATUS_UNSUCCESSFUL;
 }

NTSTATUS

Modified: trunk/reactos/lib/drivers/sound/mmixer/mmixer.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/drivers/sound/mmixer/mm...
==============================================================================
--- trunk/reactos/lib/drivers/sound/mmixer/mmixer.h [iso-8859-1] (original)
+++ trunk/reactos/lib/drivers/sound/mmixer/mmixer.h [iso-8859-1] Fri Feb 12 07:18:31 2010
@@ -191,4 +191,11 @@
     IN HANDLE PinHandle,
     IN KSSTATE State);

+MIXER_STATUS
+MMixerGetWaveDevicePath(
+    IN PMIXER_CONTEXT MixerContext,
+    IN ULONG bWaveIn,
+    IN ULONG DeviceId,
+    OUT LPWSTR * DevicePath);
+
 #endif

Modified: trunk/reactos/lib/drivers/sound/mmixer/wave.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/drivers/sound/mmixer/wa...
==============================================================================
--- trunk/reactos/lib/drivers/sound/mmixer/wave.c [iso-8859-1] (original)
+++ trunk/reactos/lib/drivers/sound/mmixer/wave.c [iso-8859-1] Fri Feb 12 07:18:31 2010
@@ -611,3 +611,61 @@

return MixerContext->Control(PinHandle, IOCTL_KS_PROPERTY, &Property, sizeof(KSPROPERTY), &State, sizeof(KSSTATE), &Length);
 }
+
+MIXER_STATUS
+MMixerGetWaveDevicePath(
+    IN PMIXER_CONTEXT MixerContext,
+    IN ULONG bWaveIn,
+    IN ULONG DeviceId,
+    OUT LPWSTR * DevicePath)
+{
+    PMIXER_LIST MixerList;
+    LPMIXER_DATA MixerData;
+    LPWAVE_INFO WaveInfo;
+    ULONG Length;
+    MIXER_STATUS Status;
+
+    // verify mixer context
+    Status = MMixerVerifyContext(MixerContext);
+
+    if (Status != MM_STATUS_SUCCESS)
+    {
+        // invalid context passed
+        return Status;
+    }
+
+    // grab mixer list
+    MixerList = (PMIXER_LIST)MixerContext->MixerContext;
+
+    /* find destination wave */
+    Status = MMixerGetWaveInfoByIndexAndType(MixerList, DeviceId, bWaveIn, &WaveInfo);
+    if (Status != MM_STATUS_SUCCESS)
+    {
+        /* failed to find wave info */
+        return MM_STATUS_INVALID_PARAMETER;
+    }
+
+    /* get associated device id */
+    MixerData = MMixerGetDataByDeviceId(MixerList, WaveInfo->DeviceId);
+    if (!MixerData)
+        return MM_STATUS_INVALID_PARAMETER;
+
+    /* calculate length */
+    Length = wcslen(MixerData->DeviceName)+1;
+
+    /* allocate destination buffer */
+    *DevicePath = MixerContext->Alloc(Length * sizeof(WCHAR));
+
+    if (!*DevicePath)
+    {
+        /* no memory */
+        return MM_STATUS_NO_MEMORY;
+    }
+
+    /* copy device path */
+    MixerContext->Copy(*DevicePath, MixerData->DeviceName, Length * sizeof(WCHAR));
+
+    /* done */
+    return MM_STATUS_SUCCESS;
+}
+