| 1 | /* $Id: AudioDriver.h 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VirtualBox audio base class for Main audio drivers.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2018-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * SPDX-License-Identifier: GPL-3.0-only
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| 26 | */
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| 27 |
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| 28 | #ifndef MAIN_INCLUDED_AudioDriver_h
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| 29 | #define MAIN_INCLUDED_AudioDriver_h
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| 30 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 31 | # pragma once
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| 32 | #endif
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| 33 |
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| 34 | #include <VBox/com/ptr.h>
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| 35 | #include <VBox/com/string.h>
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| 36 | #include <VBox/com/AutoLock.h>
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| 37 |
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| 38 | using namespace com;
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| 39 |
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| 40 | /**
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| 41 | * Audio driver configuration for audio drivers implemented
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| 42 | * in Main.
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| 43 | */
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| 44 | struct AudioDriverCfg
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| 45 | {
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| 46 | AudioDriverCfg(Utf8Str a_strDev = "", unsigned a_uInst = 0, unsigned a_uLUN = 0, Utf8Str a_strName = "",
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| 47 | bool a_fEnabledIn = false, bool a_fEnabledOut = false)
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| 48 | : strDev(a_strDev)
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| 49 | , uInst(a_uInst)
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| 50 | , uLUN(a_uLUN)
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| 51 | , strName(a_strName)
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| 52 | , fEnabledIn(a_fEnabledIn)
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| 53 | , fEnabledOut(a_fEnabledOut)
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| 54 | { }
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| 55 |
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| 56 | /** Copy assignment operator. */
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| 57 | AudioDriverCfg& operator=(AudioDriverCfg const &a_rThat) RT_NOEXCEPT
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| 58 | {
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| 59 | this->strDev = a_rThat.strDev;
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| 60 | this->uInst = a_rThat.uInst;
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| 61 | this->uLUN = a_rThat.uLUN;
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| 62 | this->strName = a_rThat.strName;
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| 63 | this->fEnabledIn = a_rThat.fEnabledIn;
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| 64 | this->fEnabledOut = a_rThat.fEnabledOut;
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| 65 |
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| 66 | return *this;
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| 67 | }
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| 68 |
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| 69 | /** The device name. */
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| 70 | Utf8Str strDev;
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| 71 | /** The device instance. */
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| 72 | unsigned uInst;
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| 73 | /** The LUN the driver is attached to.
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| 74 | * Set the UINT8_MAX if not attached. */
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| 75 | unsigned uLUN;
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| 76 | /** The driver name. */
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| 77 | Utf8Str strName;
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| 78 | /** Whether input is enabled. */
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| 79 | bool fEnabledIn;
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| 80 | /** Whether output is enabled. */
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| 81 | bool fEnabledOut;
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| 82 | };
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| 83 |
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| 84 | class Console;
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| 85 |
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| 86 | /**
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| 87 | * Base class for all audio drivers implemented in Main.
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| 88 | */
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| 89 | class AudioDriver
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| 90 | {
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| 91 |
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| 92 | public:
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| 93 | AudioDriver(Console *pConsole);
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| 94 | virtual ~AudioDriver();
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| 95 |
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| 96 | /** Copy assignment operator. */
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| 97 | AudioDriver &operator=(AudioDriver const &a_rThat) RT_NOEXCEPT;
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| 98 |
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| 99 | Console *GetParent(void) { return mpConsole; }
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| 100 |
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| 101 | AudioDriverCfg *GetConfig(void) { return &mCfg; }
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| 102 | int InitializeConfig(AudioDriverCfg *pCfg);
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| 103 |
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| 104 | /** Checks if audio is configured or not. */
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| 105 | bool isConfigured() const { return mCfg.strName.isNotEmpty(); }
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| 106 |
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| 107 | bool IsAttached(void) { return mfAttached; }
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| 108 |
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| 109 | int doAttachDriverViaEmt(PUVM pUVM, PCVMMR3VTABLE pVMM, util::AutoWriteLock *pAutoLock);
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| 110 | int doDetachDriverViaEmt(PUVM pUVM, PCVMMR3VTABLE pVMM, util::AutoWriteLock *pAutoLock);
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| 111 |
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| 112 | protected:
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| 113 | static DECLCALLBACK(int) attachDriverOnEmt(AudioDriver *pThis);
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| 114 | static DECLCALLBACK(int) detachDriverOnEmt(AudioDriver *pThis);
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| 115 |
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| 116 | int configure(unsigned uLUN, bool fAttach);
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| 117 |
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| 118 | /**
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| 119 | * Virtual function for child specific driver configuration.
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| 120 | *
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| 121 | * This is called at the end of AudioDriver::configure().
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| 122 | *
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| 123 | * @returns VBox status code.
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| 124 | * @param pLunCfg CFGM configuration node of the driver.
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| 125 | * @param pVMM The VMM ring-3 vtable.
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| 126 | */
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| 127 | virtual int configureDriver(PCFGMNODE pLunCfg, PCVMMR3VTABLE pVMM)
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| 128 | {
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| 129 | RT_NOREF(pLunCfg, pVMM);
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| 130 | return VINF_SUCCESS;
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| 131 | }
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| 132 |
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| 133 | protected:
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| 134 |
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| 135 | /** Pointer to parent. */
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| 136 | Console *mpConsole;
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| 137 | /** The driver's configuration. */
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| 138 | AudioDriverCfg mCfg;
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| 139 | /** Whether the driver is attached or not. */
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| 140 | bool mfAttached;
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| 141 | };
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| 142 |
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| 143 | #endif /* !MAIN_INCLUDED_AudioDriver_h */
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| 144 |
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