source: sbliveos2/trunk/drv16/ssm_idc.cpp

Last change on this file was 142, checked in by ktk, 25 years ago

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[142]1/* $Id: ssm_idc.cpp 142 2000-04-23 14:55:46Z ktk $ */
2
3/* SCCSID = %W% %E% */
4/****************************************************************************
5 * *
6 * Copyright (c) IBM Corporation 1994 - 1997. *
7 * *
8 * The following IBM OS/2 source code is provided to you solely for the *
9 * the purpose of assisting you in your development of OS/2 device drivers. *
10 * You may use this code in accordance with the IBM License Agreement *
11 * provided in the IBM Device Driver Source Kit for OS/2. *
12 * *
13 ****************************************************************************/
14/**@internal %W%
15 * @notes
16 * @version %I%
17 * @context Unless otherwise noted, all interfaces are Ring-0, 16-bit,
18 * <stack context>.
19 * @history
20 *
21 */
22#define INCL_NOPMAPI
23#define INCL_DOSERRORS // for ERROR_INVALID_FUNCTION
24#include <os2.h>
25#include <os2me.h>
26#include <audio.h>
27
28#include "midistrm.hpp"
29#include "event.hpp"
30#include <include.h>
31
32
33extern "C" ULONG __far __loadds __cdecl DDCMD_EntryPoint(PDDCMDCOMMON pCommon)
34{
35 ULONG ulReturnCode = NO_ERROR;
36 PSTREAM pstream=FindStream(pCommon->hStream);
37
38 switch (pCommon->ulFunction) {
39
40 case DDCMD_SETUP: {
41 if (!pstream)
42 return ERROR_INVALID_STREAM;
43 PDDCMDSETUP p = (PDDCMDSETUP) pCommon;
44 SETUP_PARM __far *psp = (SETUP_PARM __far *) p->pSetupParm;
45 pstream->SetCurrentTime(psp->ulStreamTime);
46
47 // if there is a flags field in the SETUP_PARM
48 // the tell MMPM it can send us 'RECURRING' events....
49 if (p->ulSetupParmSize > sizeof(ULONG)) {
50 psp->ulFlags = SETUP_RECURRING_EVENTS;
51 }
52 break;
53 }
54 case DDCMD_READ: {
55 PDDCMDREADWRITE p=(PDDCMDREADWRITE) pCommon;
56
57
58 if (!pstream)
59 return ERROR_INVALID_STREAM;
60 ulReturnCode =
61 pstream->Read((PSTREAMBUF) p->pBuffer,(unsigned) p->ulBufferSize);
62 if (ulReturnCode)
63 return ulReturnCode;
64 break;
65 }
66 case DDCMD_WRITE: {
67 PDDCMDREADWRITE p=(PDDCMDREADWRITE) pCommon;
68
69 if (!pstream)
70 return ERROR_INVALID_STREAM;
71 ulReturnCode =
72 pstream->Write((PSTREAMBUF) p->pBuffer,(unsigned) p->ulBufferSize);
73 if (ulReturnCode)
74 return ulReturnCode;
75 break;
76 }
77 case DDCMD_STATUS: {
78
79 PDDCMDSTATUS p = (PDDCMDSTATUS) pCommon;
80 PSTATUS_PARM p2 = (PSTATUS_PARM) p->pStatus;
81 if (!pstream)
82 return ERROR_INVALID_STREAM;
83 p2->ulTime = pstream->GetCurrentTime();
84 break;
85 }
86 case DDCMD_CONTROL: {
87 PDDCMDCONTROL p = (PDDCMDCONTROL) pCommon;
88 if (!pstream)
89 return ERROR_INVALID_STREAM;
90
91 switch (p->ulCmd) {
92 case DDCMD_START:
93 return pstream->StartStream();
94 case DDCMD_STOP:
95 p->ulParmSize=sizeof(ULONG);
96 return pstream->StopStream((PCONTROL_PARM)p->pParm);
97 case DDCMD_PAUSE:
98 p->ulParmSize=sizeof(ULONG);
99 return pstream->PauseStream((PCONTROL_PARM)p->pParm);
100 case DDCMD_RESUME:
101 return pstream->ResumeStream();
102 case DDCMD_ENABLE_EVENT:
103 return pstream->EnableEvent(p);
104 case DDCMD_DISABLE_EVENT:
105 return pstream->DisableEvent(p);
106 case DDCMD_PAUSE_TIME:
107 return pstream->PauseStreamTime();
108 case DDCMD_RESUME_TIME:
109 return pstream->ResumeStreamTime();
110 default:
111 return ERROR_INVALID_REQUEST;
112 } /* endswitch */
113 }
114 case DDCMD_REG_STREAM: {
115 if (pstream)
116 return ERROR_HNDLR_REGISTERED;
117 pstream = FindStream_fromFile(((PDDCMDREGISTER) pCommon)->ulSysFileNum);
118 if (!pstream)
119 return ERROR_STREAM_CREATION;
120 ulReturnCode = pstream->Register((PDDCMDREGISTER) pCommon);
121 if (ulReturnCode)
122 return ERROR_STREAM_CREATION;
123 break;
124 }
125 case DDCMD_DEREG_STREAM:
126 if (!pstream)
127 return ERROR_INVALID_STREAM;
128 pstream->DeRegister();
129 break;
130 default:
131 return ERROR_INVALID_FUNCTION;
132 }
133
134 return NO_ERROR;
135}
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