| 1 | /* $Id: DevHdaStreamMap.h 88235 2021-03-22 10:44:43Z vboxsync $ */
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| 2 | /** @file
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| 3 | * Intel HD Audio Controller Emulation - Stream mapping (e.g. 5.1 -> stereo).
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2017-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef VBOX_INCLUDED_SRC_Audio_DevHdaStreamMap_h
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| 19 | #define VBOX_INCLUDED_SRC_Audio_DevHdaStreamMap_h
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| 20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 21 | # pragma once
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| 22 | #endif
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| 23 |
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| 24 | /**
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| 25 | * Audio stream data mapping.
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| 26 | */
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| 27 | typedef struct HDASTREAMMAP
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| 28 | {
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| 29 | /** The guest stream properties that is being mapped from/to.
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| 30 | * The host properties are found in HDASTREAMSTATE::Cfg::Props. */
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| 31 | PDMAUDIOPCMPROPS GuestProps;
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| 32 | /** The stream's layout. */
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| 33 | PDMAUDIOSTREAMLAYOUT enmLayout;
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| 34 | /** The guest side frame size in bytes. */
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| 35 | uint8_t cbGuestFrame;
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| 36 | /** Set if mapping is needed. */
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| 37 | bool fMappingNeeded;
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| 38 | /** Number of mappings in paMappings. */
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| 39 | uint8_t cMappings;
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| 40 | uint8_t aPadding[1];
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| 41 | /** Array of stream mappings.
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| 42 | * Note: The mappings *must* be layed out in an increasing order, e.g.
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| 43 | * how the data appears in the given data block. */
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| 44 | R3PTRTYPE(PPDMAUDIOSTREAMMAP) paMappings;
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| 45 | #if HC_ARCH_BITS == 32
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| 46 | RTR3PTR Padding1;
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| 47 | #endif
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| 48 | #ifdef VBOX_WITH_AUDIO_HDA_51_SURROUND
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| 49 | /** Circular buffer holding for holding audio data for this mapping. */
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| 50 | R3PTRTYPE(PRTCIRCBUF) pCircBuf;
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| 51 | #endif
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| 52 | /**
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| 53 | * Converts guest data to host data.
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| 54 | *
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| 55 | * @param pvDst The destination (host) buffer.
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| 56 | * @param pvSrc The source (guest) data. Does not overlap @a pvDst.
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| 57 | * @param cFrames Number of frames to convert.
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| 58 | * @param pMapping Pointer to this structure.
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| 59 | */
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| 60 | DECLR3CALLBACKMEMBER(void, pfnGuestToHost,(void *pvDst, void const *pvSrc, uint32_t cFrames,
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| 61 | struct HDASTREAMMAP const *pMapping));
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| 62 | /**
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| 63 | * Converts host data to guest data.
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| 64 | *
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| 65 | * @param pvDst The destination (guest) buffer.
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| 66 | * @param pvSrc The source (host) data. Does not overlap @a pvDst.
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| 67 | * @param cFrames Number of frames to convert.
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| 68 | * @param pMapping Pointer to this structure.
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| 69 | */
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| 70 | DECLR3CALLBACKMEMBER(void, pfnHostToGuest,(void *pvDst, void const *pvSrc, uint32_t cFrames,
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| 71 | struct HDASTREAMMAP const *pMapping));
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| 72 | } HDASTREAMMAP;
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| 73 | AssertCompileSizeAlignment(HDASTREAMMAP, 8);
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| 74 | /** Pointer to an audio stream data mapping. */
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| 75 | typedef HDASTREAMMAP *PHDASTREAMMAP;
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| 76 |
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| 77 | /** @name Stream mapping functions.
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| 78 | * @{
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| 79 | */
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| 80 | #ifdef IN_RING3
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| 81 | int hdaR3StreamMapInit(PHDASTREAMMAP pMapping, uint8_t cHostChannels, PPDMAUDIOPCMPROPS pProps);
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| 82 | void hdaR3StreamMapDestroy(PHDASTREAMMAP pMapping);
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| 83 | void hdaR3StreamMapReset(PHDASTREAMMAP pMapping);
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| 84 | #endif
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| 85 | /** @} */
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| 86 |
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| 87 | #endif /* !VBOX_INCLUDED_SRC_Audio_DevHdaStreamMap_h */
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| 88 |
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