Changeset 74006 in vbox for trunk/src

Timestamp:

Aug 31, 2018 5:23:27 PM (6 years ago)

Author:

vboxsync

Message:

Audio/DrvAudioHlp: Implemented DrvAudioHlpDeviceEnumGetDeviceCount().

Location:

trunk/src/VBox/Devices/Audio

Files:

• DrvAudio.h (modified) (1 diff)
• DrvAudioCommon.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Audio/DrvAudio.h

@@ -247 +247 @@
 int DrvAudioHlpDeviceEnumCopyEx(PPDMAUDIODEVICEENUM pDstDevEnm, const PPDMAUDIODEVICEENUM pSrcDevEnm, PDMAUDIODIR enmUsage, bool fCopyUserData);
 PPDMAUDIODEVICE DrvAudioHlpDeviceEnumGetDefaultDevice(const PPDMAUDIODEVICEENUM pDevEnm, PDMAUDIODIR enmDir);
+uint16_t DrvAudioHlpDeviceEnumGetDeviceCount(const PPDMAUDIODEVICEENUM pDevEnm, PDMAUDIODIR enmUsage);
 void DrvAudioHlpDeviceEnumPrint(const char *pszDesc, const PPDMAUDIODEVICEENUM pDevEnm);
 /** @}  */

trunk/src/VBox/Devices/Audio/DrvAudioCommon.cpp

@@ -490 +490 @@
 
     return NULL;
+}
+
+/**
+ * Returns the number of enumerated devices of a given device enumeration.
+ *
+ * @returns Number of devices if found, or 0 if none found.
+ * @param   pDevEnm             Device enumeration to get default device for.
+ * @param   enmUsage            Usage to get default device for.
+ */
+uint16_t DrvAudioHlpDeviceEnumGetDeviceCount(const PPDMAUDIODEVICEENUM pDevEnm, PDMAUDIODIR enmUsage)
+{
+    AssertPtrReturn(pDevEnm, 0);
+
+    if (enmUsage == PDMAUDIODIR_ANY)
+        return pDevEnm->cDevices;
+
+    uint32_t cDevs = 0;
+
+    PPDMAUDIODEVICE pDev;
+    RTListForEach(&pDevEnm->lstDevices, pDev, PDMAUDIODEVICE, Node)
+    {
+        if (enmUsage == pDev->enmUsage)
+            cDevs++;
+    }
+
+    return cDevs;
 }