| 1 | /* $Id: ssm_idc.cpp 142 2000-04-23 14:55:46Z ktk $ */
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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 | #define INCL_DOSERRORS // for ERROR_INVALID_FUNCTION
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| 24 | #include <os2.h>
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| 25 | #include <os2me.h>
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| 26 | #include <audio.h>
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| 27 |
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| 28 | #include "midistrm.hpp"
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| 29 | #include "event.hpp"
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| 30 | #include <include.h>
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| 31 |
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| 32 |
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| 33 | extern "C" ULONG __far __loadds __cdecl DDCMD_EntryPoint(PDDCMDCOMMON pCommon)
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| 34 | {
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| 35 | ULONG ulReturnCode = NO_ERROR;
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| 36 | PSTREAM pstream=FindStream(pCommon->hStream);
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| 37 |
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| 38 | switch (pCommon->ulFunction) {
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| 39 |
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| 40 | case DDCMD_SETUP: {
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| 41 | if (!pstream)
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| 42 | return ERROR_INVALID_STREAM;
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| 43 | PDDCMDSETUP p = (PDDCMDSETUP) pCommon;
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| 44 | SETUP_PARM __far *psp = (SETUP_PARM __far *) p->pSetupParm;
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| 45 | pstream->SetCurrentTime(psp->ulStreamTime);
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| 46 |
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| 47 | // if there is a flags field in the SETUP_PARM
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| 48 | // the tell MMPM it can send us 'RECURRING' events....
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| 49 | if (p->ulSetupParmSize > sizeof(ULONG)) {
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| 50 | psp->ulFlags = SETUP_RECURRING_EVENTS;
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| 51 | }
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| 52 | break;
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| 53 | }
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| 54 | case DDCMD_READ: {
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| 55 | PDDCMDREADWRITE p=(PDDCMDREADWRITE) pCommon;
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| 56 |
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| 57 |
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| 58 | if (!pstream)
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| 59 | return ERROR_INVALID_STREAM;
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| 60 | ulReturnCode =
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| 61 | pstream->Read((PSTREAMBUF) p->pBuffer,(unsigned) p->ulBufferSize);
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| 62 | if (ulReturnCode)
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| 63 | return ulReturnCode;
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| 64 | break;
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| 65 | }
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| 66 | case DDCMD_WRITE: {
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| 67 | PDDCMDREADWRITE p=(PDDCMDREADWRITE) pCommon;
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| 68 |
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| 69 | if (!pstream)
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| 70 | return ERROR_INVALID_STREAM;
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| 71 | ulReturnCode =
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| 72 | pstream->Write((PSTREAMBUF) p->pBuffer,(unsigned) p->ulBufferSize);
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| 73 | if (ulReturnCode)
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| 74 | return ulReturnCode;
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| 75 | break;
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| 76 | }
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| 77 | case DDCMD_STATUS: {
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| 78 |
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| 79 | PDDCMDSTATUS p = (PDDCMDSTATUS) pCommon;
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| 80 | PSTATUS_PARM p2 = (PSTATUS_PARM) p->pStatus;
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| 81 | if (!pstream)
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| 82 | return ERROR_INVALID_STREAM;
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| 83 | p2->ulTime = pstream->GetCurrentTime();
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| 84 | break;
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| 85 | }
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| 86 | case DDCMD_CONTROL: {
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| 87 | PDDCMDCONTROL p = (PDDCMDCONTROL) pCommon;
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| 88 | if (!pstream)
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| 89 | return ERROR_INVALID_STREAM;
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| 90 |
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| 91 | switch (p->ulCmd) {
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| 92 | case DDCMD_START:
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| 93 | return pstream->StartStream();
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| 94 | case DDCMD_STOP:
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| 95 | p->ulParmSize=sizeof(ULONG);
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| 96 | return pstream->StopStream((PCONTROL_PARM)p->pParm);
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| 97 | case DDCMD_PAUSE:
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| 98 | p->ulParmSize=sizeof(ULONG);
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| 99 | return pstream->PauseStream((PCONTROL_PARM)p->pParm);
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| 100 | case DDCMD_RESUME:
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| 101 | return pstream->ResumeStream();
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| 102 | case DDCMD_ENABLE_EVENT:
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| 103 | return pstream->EnableEvent(p);
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| 104 | case DDCMD_DISABLE_EVENT:
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| 105 | return pstream->DisableEvent(p);
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| 106 | case DDCMD_PAUSE_TIME:
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| 107 | return pstream->PauseStreamTime();
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| 108 | case DDCMD_RESUME_TIME:
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| 109 | return pstream->ResumeStreamTime();
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| 110 | default:
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| 111 | return ERROR_INVALID_REQUEST;
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| 112 | } /* endswitch */
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| 113 | }
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| 114 | case DDCMD_REG_STREAM: {
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| 115 | if (pstream)
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| 116 | return ERROR_HNDLR_REGISTERED;
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| 117 | pstream = FindStream_fromFile(((PDDCMDREGISTER) pCommon)->ulSysFileNum);
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| 118 | if (!pstream)
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| 119 | return ERROR_STREAM_CREATION;
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| 120 | ulReturnCode = pstream->Register((PDDCMDREGISTER) pCommon);
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| 121 | if (ulReturnCode)
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| 122 | return ERROR_STREAM_CREATION;
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| 123 | break;
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| 124 | }
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| 125 | case DDCMD_DEREG_STREAM:
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| 126 | if (!pstream)
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| 127 | return ERROR_INVALID_STREAM;
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| 128 | pstream->DeRegister();
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| 129 | break;
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| 130 | default:
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| 131 | return ERROR_INVALID_FUNCTION;
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| 132 | }
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| 133 |
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| 134 | return NO_ERROR;
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| 135 | }
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