1 files changed, 61 insertions, 0 deletions
diff --git a/src/VBox/Devices/Audio/HDAStreamMap.h b/src/VBox/Devices/Audio/HDAStreamMap.h
new file mode 100644
index 00000000..f0e6e62e
--- /dev/null
+++ b/src/VBox/Devices/Audio/HDAStreamMap.h
@@ -0,0 +1,61 @@
+/* $Id: HDAStreamMap.h $ */
+/** @file
+ * HDAStreamMap.h - Stream map functions for HD Audio.
+ */
+
+/*
+ * Copyright (C) 2017-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ */
+
+#ifndef VBOX_INCLUDED_SRC_Audio_HDAStreamMap_h
+#define VBOX_INCLUDED_SRC_Audio_HDAStreamMap_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+/**
+ * Structure for keeping an audio stream data mapping.
+ */
+typedef struct HDASTREAMMAP
+{
+    /** The stream's layout. */
+    PDMAUDIOSTREAMLAYOUT               enmLayout;
+    uint8_t                            cbFrameSize;
+    /** Number of mappings in paMappings. */
+    uint8_t                            cMappings;
+    uint8_t                            aPadding[2];
+    /** Array of stream mappings.
+     *  Note: The mappings *must* be layed out in an increasing order, e.g.
+     *        how the data appears in the given data block. */
+    R3PTRTYPE(PPDMAUDIOSTREAMMAP)      paMappings;
+#if HC_ARCH_BITS == 32
+    RTR3PTR                            Padding1;
+#endif
+#ifdef VBOX_WITH_AUDIO_HDA_51_SURROUND
+    /** Circular buffer holding for holding audio data for this mapping. */
+    R3PTRTYPE(PRTCIRCBUF)              pCircBuf;
+#endif
+} HDASTREAMMAP;
+AssertCompileSizeAlignment(HDASTREAMMAP, 8);
+typedef HDASTREAMMAP *PHDASTREAMMAP;
+
+/** @name Stream mapping functions.
+ * @{
+ */
+#ifdef IN_RING3
+int  hdaR3StreamMapInit(PHDASTREAMMAP pMapping, PPDMAUDIOPCMPROPS pProps);
+void hdaR3StreamMapDestroy(PHDASTREAMMAP pMapping);
+void hdaR3StreamMapReset(PHDASTREAMMAP pMapping);
+#endif /* IN_RING3 */
+/** @} */
+
+#endif /* !VBOX_INCLUDED_SRC_Audio_HDAStreamMap_h */
+