source: cmedia/trunk/Drv16/ssm_idc.cpp@ 354

Last change on this file since 354 was 354, checked in by stevenhl, 17 years ago

Import untested baseline cmedia sources, work products and binaries
Binaries and work products should be deleted from repository.
once new builds are verified to work.
File size: 5.5 KB
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1/* $Id: ssm_idc.cpp,v 1.1 2000/04/23 14:55:20 ktk Exp $ */
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#include <devhelp.h>
33#include "trace.h"
34
35
36/*
37#define DDCMD_SETUP 0L
38#define DDCMD_READ 1L
39#define DDCMD_WRITE 2L
40#define DDCMD_STATUS 3L
41#define DDCMD_CONTROL 4L
42#define DDCMD_REG_STREAM 5L
43#define DDCMD_DEREG_STREAM 6L
44
45
46#define DDCMD_START 1 start device
47#define DDCMD_STOP 2 stop device and return current posi
48#define DDCMD_PAUSE 3 pause device and return current pos
49#define DDCMD_RESUME 4 resume device
50#define DDCMD_ENABLE_EVENT 5 ask PDD to create this event
51#define DDCMD_DISABLE_EVENT 6 ask PDD to purge this event
52#define DDCMD_PAUSE_TIME 7 pause time keeping, but not the str
53#define DDCMD_RESUME_TIME 8 resume time keeping.
54*/
55
56
57extern "C" ULONG __far __loadds __cdecl DDCMD_EntryPoint(PDDCMDCOMMON pCommon)
58{
59 ULONG ulReturnCode = NO_ERROR;
60 PSTREAM pstream=FindStream(pCommon->hStream);
61
62#ifndef NOTRACE
63 struct { ULONG hStream; ULONG ulStream; ULONG ulFunction; ULONG ulParameter; } TraceData;
64
65 if( pCommon->ulFunction != DDCMD_READ &&
66 pCommon->ulFunction != DDCMD_WRITE &&
67 pCommon->ulFunction != DDCMD_STATUS )
68 {
69 TraceData.hStream = pCommon->hStream;
70 TraceData.ulStream = (ULONG)pstream;
71 TraceData.ulFunction = pCommon->ulFunction;
72 TraceData.ulParameter = 0;
73 if( pCommon->ulFunction != DDCMD_CONTROL ) SYSTRACE(241, 10, TraceData);
74 }
75#endif
76
77 switch (pCommon->ulFunction) {
78
79 case DDCMD_SETUP: {
80 if (!pstream)
81 return ERROR_INVALID_STREAM;
82 PDDCMDSETUP p = (PDDCMDSETUP) pCommon;
83 SETUP_PARM __far *psp = (SETUP_PARM __far *) p->pSetupParm;
84 pstream->SetCurrentTime(psp->ulStreamTime);
85
86 // if there is a flags field in the SETUP_PARM
87 // the tell MMPM it can send us 'RECURRING' events....
88 if (p->ulSetupParmSize > sizeof(ULONG)) {
89 psp->ulFlags = SETUP_RECURRING_EVENTS;
90 }
91 break;
92 }
93 case DDCMD_READ: {
94 PDDCMDREADWRITE p=(PDDCMDREADWRITE) pCommon;
95
96 if (!pstream)
97 return ERROR_INVALID_STREAM;
98 ulReturnCode =
99 pstream->Read((PSTREAMBUF) p->pBuffer,(unsigned) p->ulBufferSize);
100 if (ulReturnCode)
101 return ulReturnCode;
102 break;
103 }
104 case DDCMD_WRITE: {
105 PDDCMDREADWRITE p=(PDDCMDREADWRITE) pCommon;
106
107 if (!pstream)
108 return ERROR_INVALID_STREAM;
109 ulReturnCode =
110 pstream->Write((PSTREAMBUF) p->pBuffer,(unsigned) p->ulBufferSize);
111 if (ulReturnCode)
112 return ulReturnCode;
113 break;
114 }
115 case DDCMD_STATUS: {
116 PDDCMDSTATUS p = (PDDCMDSTATUS) pCommon;
117 PSTATUS_PARM p2 = (PSTATUS_PARM) p->pStatus;
118
119 if (!pstream)
120 return ERROR_INVALID_STREAM;
121 p2->ulTime = pstream->GetCurrentTime();
122 break;
123 }
124 case DDCMD_CONTROL: {
125 PDDCMDCONTROL p = (PDDCMDCONTROL) pCommon;
126
127 if (!pstream)
128 return ERROR_INVALID_STREAM;
129
130#ifndef NOTRACE
131 TraceData.ulParameter = p->ulCmd;
132 SYSTRACE(241, 11, TraceData);
133#endif
134
135 switch (p->ulCmd) {
136 case DDCMD_START:
137 return pstream->StartStream();
138 case DDCMD_STOP:
139 p->ulParmSize=sizeof(ULONG);
140 return pstream->StopStream((PCONTROL_PARM)p->pParm);
141 case DDCMD_PAUSE:
142 p->ulParmSize=sizeof(ULONG);
143 return pstream->PauseStream((PCONTROL_PARM)p->pParm);
144 case DDCMD_RESUME:
145 return pstream->ResumeStream();
146 case DDCMD_ENABLE_EVENT:
147 return pstream->EnableEvent(p);
148 case DDCMD_DISABLE_EVENT:
149 return pstream->DisableEvent(p);
150 case DDCMD_PAUSE_TIME:
151 return pstream->PauseStreamTime();
152 case DDCMD_RESUME_TIME:
153 return pstream->ResumeStreamTime();
154 default:
155 return ERROR_INVALID_REQUEST;
156 } /* endswitch */
157 }
158 case DDCMD_REG_STREAM: {
159 if (pstream)
160 return ERROR_HNDLR_REGISTERED;
161 pstream = FindStream_fromFile((USHORT)((PDDCMDREGISTER) pCommon)->ulSysFileNum);
162 if (!pstream)
163 return ERROR_STREAM_CREATION;
164 ulReturnCode = pstream->Register((PDDCMDREGISTER) pCommon);
165 if (ulReturnCode)
166 return ERROR_STREAM_CREATION;
167 break;
168 }
169 case DDCMD_DEREG_STREAM:
170 if (!pstream)
171 return ERROR_INVALID_STREAM;
172 pstream->DeRegister();
173 break;
174 default:
175 return ERROR_INVALID_FUNCTION;
176 }
177
178 return NO_ERROR;
179}
180
181
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