| 1 | /* $Id: DrvAudio.h 74006 2018-08-31 17:23:27Z vboxsync $ */
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| 2 | /** @file
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| 3 | * Intermediate audio driver header.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2018 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 DRV_AUDIO_H
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| 19 | #define DRV_AUDIO_H
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| 20 |
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| 21 | #include <limits.h>
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| 22 |
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| 23 | #include <iprt/circbuf.h>
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| 24 | #include <iprt/critsect.h>
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| 25 | #include <iprt/file.h>
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| 26 | #include <iprt/path.h>
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| 27 |
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| 28 | #include <VBox/vmm/pdmdev.h>
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| 29 | #include <VBox/vmm/pdm.h>
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| 30 | #include <VBox/vmm/pdmaudioifs.h>
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| 31 |
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| 32 | typedef enum
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| 33 | {
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| 34 | AUD_OPT_INT,
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| 35 | AUD_OPT_FMT,
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| 36 | AUD_OPT_STR,
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| 37 | AUD_OPT_BOOL
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| 38 | } audio_option_tag_e;
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| 39 |
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| 40 | typedef struct audio_option
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| 41 | {
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| 42 | const char *name;
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| 43 | audio_option_tag_e tag;
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| 44 | void *valp;
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| 45 | const char *descr;
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| 46 | int *overridenp;
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| 47 | int overriden;
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| 48 | } audio_option;
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| 49 |
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| 50 | #ifdef VBOX_WITH_STATISTICS
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| 51 | /**
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| 52 | * Structure for keeping stream statistics for the
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| 53 | * statistic manager (STAM).
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| 54 | */
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| 55 | typedef struct DRVAUDIOSTATS
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| 56 | {
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| 57 | STAMCOUNTER TotalStreamsActive;
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| 58 | STAMCOUNTER TotalStreamsCreated;
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| 59 | STAMCOUNTER TotalFramesRead;
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| 60 | STAMCOUNTER TotalFramesWritten;
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| 61 | STAMCOUNTER TotalFramesMixedIn;
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| 62 | STAMCOUNTER TotalFramesMixedOut;
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| 63 | STAMCOUNTER TotalFramesLostIn;
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| 64 | STAMCOUNTER TotalFramesLostOut;
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| 65 | STAMCOUNTER TotalFramesOut;
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| 66 | STAMCOUNTER TotalFramesIn;
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| 67 | STAMCOUNTER TotalBytesRead;
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| 68 | STAMCOUNTER TotalBytesWritten;
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| 69 | /** How much delay (in ms) for input processing. */
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| 70 | STAMPROFILEADV DelayIn;
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| 71 | /** How much delay (in ms) for output processing. */
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| 72 | STAMPROFILEADV DelayOut;
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| 73 | } DRVAUDIOSTATS, *PDRVAUDIOSTATS;
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| 74 | #endif
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| 75 |
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| 76 | /**
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| 77 | * Audio driver configuration data, tweakable via CFGM.
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| 78 | */
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| 79 | typedef struct DRVAUDIOCFG
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| 80 | {
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| 81 | /** Configures the period size (in ms).
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| 82 | * This value reflects the time in between each hardware interrupt on the
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| 83 | * backend (host) side. */
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| 84 | uint32_t uPeriodSizeMs;
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| 85 | /** Configures the (ring) buffer size (in ms). Often is a multiple of uPeriodMs. */
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| 86 | uint32_t uBufferSizeMs;
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| 87 | /** Configures the pre-buffering size (in ms).
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| 88 | * Time needed in buffer before the stream becomes active (pre buffering).
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| 89 | * The bigger this value is, the more latency for the stream will occur.
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| 90 | * Set to 0 to disable pre-buffering completely.
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| 91 | * By default set to UINT32_MAX if not set to a custom value. */
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| 92 | uint32_t uPreBufSizeMs;
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| 93 | /** The driver's debugging configuration. */
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| 94 | struct
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| 95 | {
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| 96 | /** Whether audio debugging is enabled or not. */
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| 97 | bool fEnabled;
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| 98 | /** Where to store the debugging files.
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| 99 | * Defaults to VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH if not set. */
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| 100 | char szPathOut[RTPATH_MAX + 1];
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| 101 | } Dbg;
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| 102 | } DRVAUDIOCFG, *PDRVAUDIOCFG;
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| 103 |
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| 104 | /**
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| 105 | * Audio driver instance data.
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| 106 | *
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| 107 | * @implements PDMIAUDIOCONNECTOR
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| 108 | */
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| 109 | typedef struct DRVAUDIO
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| 110 | {
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| 111 | /** Friendly name of the driver. */
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| 112 | char szName[64];
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| 113 | /** Critical section for serializing access. */
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| 114 | RTCRITSECT CritSect;
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| 115 | /** Shutdown indicator. */
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| 116 | bool fTerminate;
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| 117 | /** Our audio connector interface. */
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| 118 | PDMIAUDIOCONNECTOR IAudioConnector;
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| 119 | /** Pointer to the driver instance. */
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| 120 | PPDMDRVINS pDrvIns;
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| 121 | /** Pointer to audio driver below us. */
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| 122 | PPDMIHOSTAUDIO pHostDrvAudio;
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| 123 | /** Pointer to CFGM configuration node of this driver. */
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| 124 | PCFGMNODE pCFGMNode;
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| 125 | /** List of audio streams. */
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| 126 | RTLISTANCHOR lstStreams;
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| 127 | #ifdef VBOX_WITH_AUDIO_ENUM
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| 128 | /** Flag indicating to perform an (re-)enumeration of the host audio devices. */
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| 129 | bool fEnumerateDevices;
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| 130 | #endif
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| 131 | /** Audio configuration settings retrieved from the backend. */
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| 132 | PDMAUDIOBACKENDCFG BackendCfg;
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| 133 | #ifdef VBOX_WITH_STATISTICS
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| 134 | /** Statistics for the statistics manager (STAM). */
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| 135 | DRVAUDIOSTATS Stats;
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| 136 | #endif
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| 137 | struct
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| 138 | {
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| 139 | /** Whether this driver's input streams are enabled or not.
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| 140 | * This flag overrides all the attached stream statuses. */
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| 141 | bool fEnabled;
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| 142 | /** Max. number of free input streams.
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| 143 | * UINT32_MAX for unlimited streams. */
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| 144 | uint32_t cStreamsFree;
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| 145 | #ifdef VBOX_WITH_AUDIO_CALLBACKS
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| 146 | RTLISTANCHOR lstCB;
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| 147 | #endif
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| 148 | /** The driver's input confguration (tweakable via CFGM). */
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| 149 | DRVAUDIOCFG Cfg;
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| 150 | } In;
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| 151 | struct
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| 152 | {
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| 153 | /** Whether this driver's output streams are enabled or not.
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| 154 | * This flag overrides all the attached stream statuses. */
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| 155 | bool fEnabled;
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| 156 | /** Max. number of free output streams.
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| 157 | * UINT32_MAX for unlimited streams. */
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| 158 | uint32_t cStreamsFree;
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| 159 | #ifdef VBOX_WITH_AUDIO_CALLBACKS
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| 160 | RTLISTANCHOR lstCB;
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| 161 | #endif
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| 162 | /** The driver's output confguration (tweakable via CFGM). */
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| 163 | DRVAUDIOCFG Cfg;
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| 164 | } Out;
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| 165 | } DRVAUDIO, *PDRVAUDIO;
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| 166 |
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| 167 | /** Makes a PDRVAUDIO out of a PPDMIAUDIOCONNECTOR. */
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| 168 | #define PDMIAUDIOCONNECTOR_2_DRVAUDIO(pInterface) \
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| 169 | ( (PDRVAUDIO)((uintptr_t)pInterface - RT_UOFFSETOF(DRVAUDIO, IAudioConnector)) )
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| 170 |
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| 171 | /** @name Audio format helper methods.
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| 172 | * @{ */
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| 173 | const char *DrvAudioHlpAudDirToStr(PDMAUDIODIR enmDir);
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| 174 | const char *DrvAudioHlpAudFmtToStr(PDMAUDIOFMT enmFmt);
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| 175 | bool DrvAudioHlpAudFmtIsSigned(PDMAUDIOFMT enmFmt);
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| 176 | uint8_t DrvAudioHlpAudFmtToBits(PDMAUDIOFMT enmFmt);
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| 177 | /** @} */
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| 178 |
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| 179 | /** @name Audio calculation helper methods.
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| 180 | * @{ */
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| 181 | void DrvAudioHlpClearBuf(const PPDMAUDIOPCMPROPS pPCMInfo, void *pvBuf, size_t cbBuf, uint32_t cFrames);
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| 182 | uint32_t DrvAudioHlpCalcBitrate(uint8_t cBits, uint32_t uHz, uint8_t cChannels);
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| 183 | uint32_t DrvAudioHlpCalcBitrate(const PPDMAUDIOPCMPROPS pProps);
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| 184 | uint32_t DrvAudioHlpBytesAlign(uint32_t cbSize, const PPDMAUDIOPCMPROPS pProps);
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| 185 | bool DrvAudioHlpBytesIsAligned(uint32_t cbSize, const PPDMAUDIOPCMPROPS pProps);
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| 186 | uint32_t DrvAudioHlpBytesToFrames(uint32_t cbBytes, const PPDMAUDIOPCMPROPS pProps);
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| 187 | uint64_t DrvAudioHlpBytesToMilli(uint32_t cbBytes, const PPDMAUDIOPCMPROPS pProps);
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| 188 | uint64_t DrvAudioHlpBytesToNano(uint32_t cbBytes, const PPDMAUDIOPCMPROPS pProps);
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| 189 | uint32_t DrvAudioHlpFramesToBytes(uint32_t cFrames, const PPDMAUDIOPCMPROPS pProps);
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| 190 | uint64_t DrvAudioHlpFramesToMilli(uint32_t cFrames, const PPDMAUDIOPCMPROPS pProps);
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| 191 | uint64_t DrvAudioHlpFramesToNano(uint32_t cFrames, const PPDMAUDIOPCMPROPS pProps);
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| 192 | uint32_t DrvAudioHlpMilliToBytes(uint64_t uMs, const PPDMAUDIOPCMPROPS pProps);
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| 193 | uint32_t DrvAudioHlpNanoToBytes(uint64_t uNs, const PPDMAUDIOPCMPROPS pProps);
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| 194 | uint32_t DrvAudioHlpMilliToFrames(uint64_t uMs, const PPDMAUDIOPCMPROPS pProps);
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| 195 | uint32_t DrvAudioHlpNanoToFrames(uint64_t uNs, const PPDMAUDIOPCMPROPS pProps);
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| 196 | /** @} */
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| 197 |
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| 198 | /** @name Audio PCM properties helper methods.
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| 199 | * @{ */
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| 200 | bool DrvAudioHlpPCMPropsAreEqual(const PPDMAUDIOPCMPROPS pPCMProps1, const PPDMAUDIOPCMPROPS pPCMProps2);
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| 201 | bool DrvAudioHlpPCMPropsAreEqual(const PPDMAUDIOPCMPROPS pPCMProps, const PPDMAUDIOSTREAMCFG pCfg);
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| 202 | bool DrvAudioHlpPCMPropsAreValid(const PPDMAUDIOPCMPROPS pProps);
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| 203 | uint32_t DrvAudioHlpPCMPropsBytesPerFrame(const PPDMAUDIOPCMPROPS pProps);
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| 204 | void DrvAudioHlpPCMPropsPrint(const PPDMAUDIOPCMPROPS pProps);
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| 205 | int DrvAudioHlpPCMPropsToStreamCfg(const PPDMAUDIOPCMPROPS pPCMProps, PPDMAUDIOSTREAMCFG pCfg);
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| 206 | /** @} */
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| 207 |
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| 208 | /** @name Audio stream helper methods.
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| 209 | * @{ */
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| 210 | void DrvAudioHlpStreamCfgPrint(const PPDMAUDIOSTREAMCFG pCfg);
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| 211 | bool DrvAudioHlpStreamCfgIsValid(const PPDMAUDIOSTREAMCFG pCfg);
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| 212 | int DrvAudioHlpStreamCfgCopy(PPDMAUDIOSTREAMCFG pDstCfg, const PPDMAUDIOSTREAMCFG pSrcCfg);
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| 213 | PPDMAUDIOSTREAMCFG DrvAudioHlpStreamCfgDup(const PPDMAUDIOSTREAMCFG pCfg);
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| 214 | void DrvAudioHlpStreamCfgFree(PPDMAUDIOSTREAMCFG pCfg);
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| 215 | const char *DrvAudioHlpStreamCmdToStr(PDMAUDIOSTREAMCMD enmCmd);
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| 216 | /** @} */
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| 217 |
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| 218 | /** @name Audio stream helper methods.
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| 219 | * @{ */
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| 220 | bool DrvAudioHlpStreamStatusCanRead(PDMAUDIOSTREAMSTS enmStatus);
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| 221 | bool DrvAudioHlpStreamStatusCanWrite(PDMAUDIOSTREAMSTS enmStatus);
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| 222 | bool DrvAudioHlpStreamStatusIsReady(PDMAUDIOSTREAMSTS enmStatus);
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| 223 | /** @} */
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| 224 |
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| 225 | /** @name Audio file (name) helper methods.
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| 226 | * @{ */
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| 227 | int DrvAudioHlpFileNameSanitize(char *pszPath, size_t cbPath);
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| 228 | int DrvAudioHlpFileNameGet(char *pszFile, size_t cchFile, const char *pszPath, const char *pszName, uint32_t uInstance, PDMAUDIOFILETYPE enmType, PDMAUDIOFILENAMEFLAGS fFlags);
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| 229 | /** @} */
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| 230 |
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| 231 | /** @name Audio device methods.
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| 232 | * @{ */
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| 233 | PPDMAUDIODEVICE DrvAudioHlpDeviceAlloc(size_t cbData);
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| 234 | void DrvAudioHlpDeviceFree(PPDMAUDIODEVICE pDev);
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| 235 | PPDMAUDIODEVICE DrvAudioHlpDeviceDup(const PPDMAUDIODEVICE pDev, bool fCopyUserData);
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| 236 | /** @} */
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| 237 |
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| 238 | /** @name Audio device enumartion methods.
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| 239 | * @{ */
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| 240 | int DrvAudioHlpDeviceEnumInit(PPDMAUDIODEVICEENUM pDevEnm);
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| 241 | void DrvAudioHlpDeviceEnumFree(PPDMAUDIODEVICEENUM pDevEnm);
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| 242 | int DrvAudioHlpDeviceEnumAdd(PPDMAUDIODEVICEENUM pDevEnm, PPDMAUDIODEVICE pDev);
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| 243 | int DrvAudioHlpDeviceEnumCopyEx(PPDMAUDIODEVICEENUM pDstDevEnm, const PPDMAUDIODEVICEENUM pSrcDevEnm, PDMAUDIODIR enmUsage);
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| 244 | int DrvAudioHlpDeviceEnumCopy(PPDMAUDIODEVICEENUM pDstDevEnm, const PPDMAUDIODEVICEENUM pSrcDevEnm);
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| 245 | PPDMAUDIODEVICEENUM DrvAudioHlpDeviceEnumDup(const PPDMAUDIODEVICEENUM pDevEnm);
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| 246 | int DrvAudioHlpDeviceEnumCopy(PPDMAUDIODEVICEENUM pDstDevEnm, const PPDMAUDIODEVICEENUM pSrcDevEnm);
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| 247 | int DrvAudioHlpDeviceEnumCopyEx(PPDMAUDIODEVICEENUM pDstDevEnm, const PPDMAUDIODEVICEENUM pSrcDevEnm, PDMAUDIODIR enmUsage, bool fCopyUserData);
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| 248 | PPDMAUDIODEVICE DrvAudioHlpDeviceEnumGetDefaultDevice(const PPDMAUDIODEVICEENUM pDevEnm, PDMAUDIODIR enmDir);
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| 249 | uint16_t DrvAudioHlpDeviceEnumGetDeviceCount(const PPDMAUDIODEVICEENUM pDevEnm, PDMAUDIODIR enmUsage);
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| 250 | void DrvAudioHlpDeviceEnumPrint(const char *pszDesc, const PPDMAUDIODEVICEENUM pDevEnm);
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| 251 | /** @} */
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| 252 |
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| 253 | /** @name Audio string-ify methods.
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| 254 | * @{ */
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| 255 | const char *DrvAudioHlpAudMixerCtlToStr(PDMAUDIOMIXERCTL enmMixerCtl);
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| 256 | const char *DrvAudioHlpPlaybackDstToStr(const PDMAUDIOPLAYBACKDEST enmPlaybackDst);
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| 257 | const char *DrvAudioHlpRecSrcToStr(const PDMAUDIORECSOURCE enmRecSource);
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| 258 | PDMAUDIOFMT DrvAudioHlpStrToAudFmt(const char *pszFmt);
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| 259 | char *DrvAudioHlpAudDevFlagsToStrA(PDMAUDIODEVFLAG fFlags);
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| 260 | /** @} */
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| 261 |
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| 262 | /** @name Audio file methods.
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| 263 | * @{ */
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| 264 | int DrvAudioHlpFileCreate(PDMAUDIOFILETYPE enmType, const char *pszFile, PDMAUDIOFILEFLAGS fFlags, PPDMAUDIOFILE *ppFile);
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| 265 | void DrvAudioHlpFileDestroy(PPDMAUDIOFILE pFile);
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| 266 | int DrvAudioHlpFileOpen(PPDMAUDIOFILE pFile, uint32_t fOpen, const PPDMAUDIOPCMPROPS pProps);
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| 267 | int DrvAudioHlpFileClose(PPDMAUDIOFILE pFile);
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| 268 | int DrvAudioHlpFileDelete(PPDMAUDIOFILE pFile);
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| 269 | size_t DrvAudioHlpFileGetDataSize(PPDMAUDIOFILE pFile);
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| 270 | bool DrvAudioHlpFileIsOpen(PPDMAUDIOFILE pFile);
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| 271 | int DrvAudioHlpFileWrite(PPDMAUDIOFILE pFile, const void *pvBuf, size_t cbBuf, uint32_t fFlags);
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| 272 | /** @} */
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| 273 |
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| 274 | #define AUDIO_MAKE_FOURCC(c0, c1, c2, c3) RT_H2LE_U32_C(RT_MAKE_U32_FROM_U8(c0, c1, c2, c3))
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| 275 |
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| 276 | #endif /* !DRV_AUDIO_H */
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| 277 |
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