| 1 | /* $Id: dwavestrm.cpp 166 2001-03-22 18:13:01Z sandervl $ */
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| 2 |
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| 3 | /* SCCSID = %W% %E% */
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| 4 | /****************************************************************************
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| 5 | * *
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| 6 | * Copyright (c) IBM Corporation 1994 - 1997. *
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| 7 | * *
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| 8 | * The following IBM OS/2 source code is provided to you solely for the *
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| 9 | * the purpose of assisting you in your development of OS/2 device drivers. *
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| 10 | * You may use this code in accordance with the IBM License Agreement *
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| 11 | * provided in the IBM Device Driver Source Kit for OS/2. *
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| 12 | * *
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| 13 | ****************************************************************************/
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| 14 | /**@internal %W%
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| 15 | * @notes
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| 16 | * @version %I%
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| 17 | * @context Unless otherwise noted, all interfaces are Ring-0, 16-bit,
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| 18 | * <stack context>.
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| 19 | * @history
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| 20 | *
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| 21 | */
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| 22 | #define INCL_NOPMAPI
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| 23 | #include <os2.h>
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| 24 | #include <os2me.h>
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| 25 | #include <audio.h>
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| 26 |
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| 27 | #include <devhelp.h>
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| 28 |
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| 29 | #include "dwavestrm.hpp"
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| 30 | #include "memutil.h"
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| 31 | #include <dbgos2.h>
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| 32 | #include "ioctl.h"
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| 33 |
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| 34 |
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| 35 | void cdecl HookHandler(ULONG ulSysFileNum)
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| 36 | {
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| 37 | PDWAVESTREAM pStream;
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| 38 | PSTREAMBUFFEREX temp;
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| 39 | int rc;
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| 40 |
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| 41 | pStream = (PDWAVESTREAM)FindStream_fromFile(ulSysFileNum);
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| 42 | if(pStream == NULL) {
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| 43 | dprintf(("HookHandler stream %lx not found!", (ULONG) ulSysFileNum));
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| 44 | DebugInt3();
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| 45 | return;
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| 46 | }
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| 47 |
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| 48 | temp = (PSTREAMBUFFEREX)pStream->qhReturn.PopHead();
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| 49 | while(temp) {
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| 50 | if(pStream->hstream) {
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| 51 | rc = DevHelp_PostEventSem(pStream->hstream);
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| 52 | if(rc != 0) {
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| 53 | dprintf(("DevHlp_PostEventSem returned %d", rc));
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| 54 | }
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| 55 | }
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| 56 | DevHelp_VMFree((LIN)temp->pBuffptr);
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| 57 | DevHelp_VMUnLock(temp->hLock);
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| 58 | delete temp;
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| 59 | }
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| 60 | return;
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| 61 | }
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| 62 |
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| 63 |
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| 64 | ULONG DWAVESTREAM::Write(PSTREAMBUF pbuf, ULONG uLength)
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| 65 | {
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| 66 | PSTREAMBUFFEREX pStreamBuf;
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| 67 | ULONG pGlobalAddr;
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| 68 | LIN linAddr = (LIN)&pGlobalAddr;
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| 69 | ULONG lock;
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| 70 | LIN linLock = (LIN)&lock;
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| 71 | int rc;
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| 72 |
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| 73 | rc = DevHelp_VirtToLin(SELECTOROF(linAddr), OFFSETOF(linAddr), &linAddr);
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| 74 | if(rc) {
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| 75 | DebugInt3();
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| 76 | return rc;
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| 77 | }
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| 78 |
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| 79 | rc = DevHelp_VirtToLin(SELECTOROF(linLock), OFFSETOF(linLock), &linLock);
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| 80 | if(rc) {
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| 81 | DebugInt3();
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| 82 | return rc;
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| 83 | }
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| 84 |
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| 85 | rc = DevHelp_VMLock(VMDHL_LONG | VMDHL_WRITE, (LIN)pbuf, uLength, -1L, linLock, (PULONG)-1L);
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| 86 | if(rc) {
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| 87 | DebugInt3();
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| 88 | return rc;
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| 89 | }
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| 90 |
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| 91 | rc = DevHelp_VMProcessToGlobal(VMDHGP_WRITE, (LIN)pbuf, uLength, (PLIN)linAddr);
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| 92 | if(rc) {
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| 93 | return rc;
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| 94 | }
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| 95 |
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| 96 | pStreamBuf = new STREAMBUFFEREX(uLength, (PSTREAMBUF)pGlobalAddr, lock);
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| 97 |
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| 98 | return WAVESTREAM::Write((STREAMBUFFER *)pStreamBuf);
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| 99 | }
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| 100 |
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| 101 | void DWAVESTREAM::ReturnBuffer(void)
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| 102 | {
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| 103 | PSTREAMBUFFEREX temp = (PSTREAMBUFFEREX)qhDone.PopHead();
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| 104 |
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| 105 | if(temp)
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| 106 | {
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| 107 | if(ulStreamState == STREAM_STREAMING) {//means we're called during an interrupt
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| 108 | qhReturn.PushOnTail((PQUEUEELEMENT)temp);
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| 109 | DevHelp_ArmCtxHook(hCtxHook, ulSysFileNum);
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| 110 | }
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| 111 | else {
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| 112 | DevHelp_VMFree((LIN)temp->pBuffptr);
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| 113 | DevHelp_VMUnLock(temp->hLock);
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| 114 | delete temp;
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| 115 | }
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| 116 | }
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| 117 | }
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| 118 |
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| 119 | DWAVESTREAM::DWAVESTREAM(ULONG streamtype, LPMCI_AUDIO_INIT pinit, USHORT filesysnum):
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| 120 | WAVESTREAM(streamtype, pinit, filesysnum), fError(FALSE), hCtxHook(0)
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| 121 | {
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| 122 | if(DevHelp_AllocateCtxHook((NPFN)HookHandlerAsm, &hCtxHook)) {
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| 123 | DebugInt3();
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| 124 | fError = TRUE;
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| 125 | }
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| 126 | }
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| 127 |
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| 128 | DWAVESTREAM::~DWAVESTREAM()
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| 129 | {
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| 130 | if (ulStreamState == STREAM_STREAMING) {
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| 131 | CONTROL_PARM cParm;
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| 132 | StopStream(&cParm);
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| 133 | }
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| 134 | if(hCtxHook) {
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| 135 | DevHelp_FreeCtxHook(hCtxHook);
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| 136 | }
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| 137 | }
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| 138 |
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