| 1 | /* $Id: HDAStreamPeriod.h 76565 2019-01-01 04:23:20Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * HDAStreamPeriod.h - Stream period functions for HD Audio.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2017-2019 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | */
|
|---|
| 17 |
|
|---|
| 18 | #ifndef VBOX_INCLUDED_SRC_Audio_HDAStreamPeriod_h
|
|---|
| 19 | #define VBOX_INCLUDED_SRC_Audio_HDAStreamPeriod_h
|
|---|
| 20 | #ifndef RT_WITHOUT_PRAGMA_ONCE
|
|---|
| 21 | # pragma once
|
|---|
| 22 | #endif
|
|---|
| 23 |
|
|---|
| 24 | #include <iprt/critsect.h>
|
|---|
| 25 | #ifdef DEBUG
|
|---|
| 26 | # include <iprt/time.h>
|
|---|
| 27 | #endif
|
|---|
| 28 | #include <VBox/log.h> /* LOG_ENABLED */
|
|---|
| 29 |
|
|---|
| 30 | struct HDASTREAM;
|
|---|
| 31 | typedef HDASTREAM *PHDASTREAM;
|
|---|
| 32 |
|
|---|
| 33 | #ifdef LOG_ENABLED
|
|---|
| 34 | /**
|
|---|
| 35 | * Structure for debug information of an HDA stream's period.
|
|---|
| 36 | */
|
|---|
| 37 | typedef struct HDASTREAMPERIODDBGINFO
|
|---|
| 38 | {
|
|---|
| 39 | /** Host start time (in ns) of the period. */
|
|---|
| 40 | uint64_t tsStartNs;
|
|---|
| 41 | } HDASTREAMPERIODDBGINFO, *PHDASTREAMPERIODDBGINFO;
|
|---|
| 42 | #endif
|
|---|
| 43 |
|
|---|
| 44 | /** No flags set. */
|
|---|
| 45 | #define HDASTREAMPERIOD_FLAG_NONE 0
|
|---|
| 46 | /** The stream period has been initialized and is in a valid state. */
|
|---|
| 47 | #define HDASTREAMPERIOD_FLAG_VALID RT_BIT(0)
|
|---|
| 48 | /** The stream period is active. */
|
|---|
| 49 | #define HDASTREAMPERIOD_FLAG_ACTIVE RT_BIT(1)
|
|---|
| 50 |
|
|---|
| 51 | /**
|
|---|
| 52 | * Structure for keeping an HDA stream's (time) period.
|
|---|
| 53 | * This is needed in order to keep track of stream timing and interrupt delivery.
|
|---|
| 54 | */
|
|---|
| 55 | typedef struct HDASTREAMPERIOD
|
|---|
| 56 | {
|
|---|
| 57 | /** Critical section for serializing access. */
|
|---|
| 58 | RTCRITSECT CritSect;
|
|---|
| 59 | /** Associated HDA stream descriptor (SD) number. */
|
|---|
| 60 | uint8_t u8SD;
|
|---|
| 61 | /** The period's status flags. */
|
|---|
| 62 | uint8_t fStatus;
|
|---|
| 63 | /** Number of pending interrupts required for this period. */
|
|---|
| 64 | uint8_t cIntPending;
|
|---|
| 65 | uint8_t bPadding0;
|
|---|
| 66 | /** Hertz (Hz) rate this period runs with. */
|
|---|
| 67 | uint32_t u32Hz;
|
|---|
| 68 | /** Period start time (in wall clock counts). */
|
|---|
| 69 | uint64_t u64StartWalClk;
|
|---|
| 70 | /** Period duration (in wall clock counts). */
|
|---|
| 71 | uint64_t u64DurationWalClk;
|
|---|
| 72 | /** The period's (relative) elapsed time (in wall clock counts). */
|
|---|
| 73 | uint64_t u64ElapsedWalClk;
|
|---|
| 74 | /** Delay (in wall clock counts) for tweaking the period timing. Optional. */
|
|---|
| 75 | int64_t i64DelayWalClk;
|
|---|
| 76 | /** Number of audio frames to transfer for this period. */
|
|---|
| 77 | uint32_t framesToTransfer;
|
|---|
| 78 | /** Number of audio frames already transfered. */
|
|---|
| 79 | uint32_t framesTransferred;
|
|---|
| 80 | #ifdef LOG_ENABLED
|
|---|
| 81 | /** Debugging information. */
|
|---|
| 82 | HDASTREAMPERIODDBGINFO Dbg;
|
|---|
| 83 | #endif
|
|---|
| 84 | } HDASTREAMPERIOD;
|
|---|
| 85 | AssertCompileSizeAlignment(HDASTREAMPERIOD, 8);
|
|---|
| 86 | /** Pointer to a HDA stream's time period keeper. */
|
|---|
| 87 | typedef HDASTREAMPERIOD *PHDASTREAMPERIOD;
|
|---|
| 88 |
|
|---|
| 89 | #ifdef IN_RING3
|
|---|
| 90 | int hdaR3StreamPeriodCreate(PHDASTREAMPERIOD pPeriod);
|
|---|
| 91 | void hdaR3StreamPeriodDestroy(PHDASTREAMPERIOD pPeriod);
|
|---|
| 92 | int hdaR3StreamPeriodInit(PHDASTREAMPERIOD pPeriod, uint8_t u8SD, uint16_t u16LVI, uint32_t u32CBL, PPDMAUDIOSTREAMCFG pStreamCfg);
|
|---|
| 93 | void hdaR3StreamPeriodReset(PHDASTREAMPERIOD pPeriod);
|
|---|
| 94 | int hdaR3StreamPeriodBegin(PHDASTREAMPERIOD pPeriod, uint64_t u64WalClk);
|
|---|
| 95 | void hdaR3StreamPeriodEnd(PHDASTREAMPERIOD pPeriod);
|
|---|
| 96 | void hdaR3StreamPeriodPause(PHDASTREAMPERIOD pPeriod);
|
|---|
| 97 | void hdaR3StreamPeriodResume(PHDASTREAMPERIOD pPeriod);
|
|---|
| 98 | bool hdaR3StreamPeriodLock(PHDASTREAMPERIOD pPeriod);
|
|---|
| 99 | void hdaR3StreamPeriodUnlock(PHDASTREAMPERIOD pPeriod);
|
|---|
| 100 | uint64_t hdaR3StreamPeriodFramesToWalClk(PHDASTREAMPERIOD pPeriod, uint32_t uFrames);
|
|---|
| 101 | uint64_t hdaR3StreamPeriodGetAbsEndWalClk(PHDASTREAMPERIOD pPeriod);
|
|---|
| 102 | uint64_t hdaR3StreamPeriodGetAbsElapsedWalClk(PHDASTREAMPERIOD pPeriod);
|
|---|
| 103 | uint32_t hdaR3StreamPeriodGetRemainingFrames(PHDASTREAMPERIOD pPeriod);
|
|---|
| 104 | bool hdaR3StreamPeriodHasElapsed(PHDASTREAMPERIOD pPeriod);
|
|---|
| 105 | bool hdaR3StreamPeriodHasPassedAbsWalClk(PHDASTREAMPERIOD pPeriod, uint64_t u64WalClk);
|
|---|
| 106 | bool hdaR3StreamPeriodNeedsInterrupt(PHDASTREAMPERIOD pPeriod);
|
|---|
| 107 | void hdaR3StreamPeriodAcquireInterrupt(PHDASTREAMPERIOD pPeriod);
|
|---|
| 108 | void hdaR3StreamPeriodReleaseInterrupt(PHDASTREAMPERIOD pPeriod);
|
|---|
| 109 | void hdaR3StreamPeriodInc(PHDASTREAMPERIOD pPeriod, uint32_t framesInc);
|
|---|
| 110 | bool hdaR3StreamPeriodIsComplete(PHDASTREAMPERIOD pPeriod);
|
|---|
| 111 | #endif /* IN_RING3 */
|
|---|
| 112 |
|
|---|
| 113 | #endif /* !VBOX_INCLUDED_SRC_Audio_HDAStreamPeriod_h */
|
|---|
| 114 |
|
|---|
