| 1 | /* $Id: HDAStreamMap.h 67698 2017-06-29 13:58:29Z vboxsync $ */
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| 2 | /** @file
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| 3 | * HDAStreamMap.h - Stream mapping functions for HD Audio.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2017 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 HDA_STREAMMAP_H
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| 19 | #define HDA_STREAMMAP_H
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| 20 |
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| 21 | /**
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| 22 | * Structure for keeping an audio stream data mapping.
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| 23 | */
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| 24 | typedef struct HDASTREAMMAPPING
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| 25 | {
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| 26 | /** The stream's layout. */
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| 27 | PDMAUDIOSTREAMLAYOUT enmLayout;
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| 28 | /** Number of audio channels in this stream. */
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| 29 | uint8_t cChannels;
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| 30 | /** Array of audio channels. */
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| 31 | R3PTRTYPE(PPDMAUDIOSTREAMCHANNEL) paChannels;
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| 32 | /** Circular buffer holding for holding audio data for this mapping. */
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| 33 | R3PTRTYPE(PRTCIRCBUF) pCircBuf;
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| 34 | } HDASTREAMMAPPING, *PHDASTREAMMAPPING;
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| 35 |
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| 36 | /** @name Stream mapping functions.
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| 37 | * @{
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| 38 | */
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| 39 | #ifdef IN_RING3
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| 40 | int hdaStreamMapInit(PHDASTREAMMAPPING pMapping, PPDMAUDIOPCMPROPS pProps);
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| 41 | void hdaStreamMapDestroy(PHDASTREAMMAPPING pMapping);
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| 42 | void hdaStreamMapReset(PHDASTREAMMAPPING pMapping);
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| 43 | #endif /* IN_RING3 */
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| 44 | /** @} */
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| 45 |
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| 46 | #endif /* !HDA_STREAMMAP_H */
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| 47 |
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