source: cmedia/trunk/Vsd/AudioIF/ddcmd.c@ 354

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

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1
2/************************ START OF SPECIFICATIONS ***************************/
3/* */
4/* SOURCE FILE NAME: DDCMD.C */
5/* */
6/* DESCRIPTIVE NAME: vsdDDCMDEntryPoint and procedures */
7/* */
8/* COPYRIGHT: IBM Confidential */
9/* Copyright (c) IBM Corporation 1993 */
10/* All Rights Reserved */
11/* */
12/* STATUS: WPOS Release 1.0 */
13/* */
14/* NOTES: */
15/* */
16/* ENTRY POINTS: */
17/* */
18/* EXTERNAL REFERENCES: */
19/* */
20/* MODIFICATION HISTORY: */
21/* DATE DEVELOPER CHANGE DESCRIPTION */
22/* -------- ----------- -------------------- */
23/* 11/11/93 Brian Czako Initial code added to module. */
24/* 07/22/94 Mike Koval WPOS Changes for WorkPlace OS */
25/*************************** END OF SPECIFICATIONS **************************/
26
27/**********************************************************/
28/* Include files */
29/**********************************************************/
30
31#define INCL_BASE /* include BASE OS/2 defines */
32#define INCL_PM
33#define INCL_WINWINDOWMGR
34#include <os2.h> /* all-inclusive OS/2 include file */
35
36#include <ptrace.h> /* PTRACE macros */
37#include <os2me.h> /* include external definitions */
38
39#include <shdd.h>
40
41#include "ddcmd.h"
42
43//-----------------------------------------------------------------------------
44#ifdef INCL_MM_OS2
45extern STREAM aStreamVSD[MAX_STREAM_NUM];
46
47
48#define Convert32to1616(value) ( \
49 (value) \
50 ? ((PVOID) MAKEULONG (LOUSHORT (value), (HIUSHORT (value) << 3) + 7)) \
51 : NULL)
52#endif
53//-----------------------------------------------------------------------------
54
55
56/************************** START OF SPECIFICATIONS *************************/
57/* */
58/* SUBROUTINE NAME: DDCMDEntryPoint */
59/* */
60/* FUNCTION: Entry point to "generic" DDCMD DLL. Used for ring 3 */
61/* stream handler DLL, passing down requests to ring 0 via IOCtl */
62/* calls. For WPOS, the appropriate mach kernel calls are made. */
63/* from LIBDDCMD.DLL. */
64/* */
65/* NOTES: none */
66/* */
67/* INPUT: none */
68/* */
69/* OUTPUT: */
70/* */
71/*************************** END OF SPECIFICATIONS **************************/
72ULONG vsdDDCMDEntryPoint (PVOID pEntry)
73{
74//-----------------------------------------------------------------------------
75#ifdef INCL_MM_WPOS
76 // Call DDCMD.DLL (DDCMCSRV.C) to process the DDCMD command for WPOS.
77 return XvsdDDCMDEntryPoint (pEntry);
78#endif
79//-----------------------------------------------------------------------------
80
81//-----------------------------------------------------------------------------
82#ifdef INCL_MM_OS2
83
84 PDDCMDCOMMON pCommon = (PDDCMDCOMMON) pEntry;
85
86 if (pCommon == NULL)
87 {
88 return (ERROR_INVALID_BLOCK) ;
89 }
90
91 switch (pCommon->ulFunction)
92 {
93 case DDCMD_SETUP:
94 return DDCmdSetup ((PDDCMDSETUP)pCommon);
95
96 case DDCMD_READ:
97 return DDCmdRead ((PDDCMDREADWRITE)pCommon);
98
99 case DDCMD_WRITE:
100 return DDCmdWrite ((PDDCMDREADWRITE)pCommon);
101
102 case DDCMD_STATUS:
103 return DDCmdStatus ((PDDCMDSTATUS)pCommon);
104
105 case DDCMD_CONTROL:
106 return DDCmdControl ((PDDCMDCONTROL)pCommon);
107
108 case DDCMD_REG_STREAM:
109 return DDCmdRegister ((PDDCMDREGISTER)pCommon);
110
111 case DDCMD_DEREG_STREAM:
112 return DDCmdDeRegister ((PDDCMDDEREGISTER)pCommon);
113
114 default:
115 return (ERROR_INVALID_FUNCTION);
116 }
117#endif
118//-----------------------------------------------------------------------------
119}
120
121
122
123//-----------------------------------------------------------------------------
124#ifdef INCL_MM_OS2
125ULONG DDCmdSetup (PDDCMDSETUP pSetup)
126{
127 ULONG rc, ParmSize;
128 PVOID pBackupSetupParm;
129 DDSHPARMS ParmIn;
130
131 //******************************************************
132 // Convert pSetup, pSetup->pSetupParm to 16:16 pointers
133 //******************************************************
134 pBackupSetupParm = pSetup->pSetupParm;
135
136 pSetup->pSetupParm = Convert32to1616 (pSetup->pSetupParm);
137 ParmIn.pBuffer = Convert32to1616 (pSetup);
138 ParmIn.rc = 0;
139 ParmSize = sizeof (DDCMDSETUP);
140
141 rc = DosDevIOCtl (aStreamVSD[pSetup->hStream].hfileDDSHPDD,
142 (ULONG) DDSH_CATEGORY_INTERNAL,
143 (ULONG) DDCMD_SETUP,
144 (PVOID) &ParmIn,
145 (ULONG) ParmSize,
146 (PULONG) &ParmSize,
147 (PVOID) &ParmIn,
148 (ULONG) ParmSize,
149 (PULONG) &ParmSize );
150
151 if (!rc)
152 {
153 rc = ParmIn.rc;
154 }
155
156 //********************
157 // Restore pSetupParm
158 //********************
159 pSetup->pSetupParm = pBackupSetupParm;
160
161 return (rc);
162}
163
164
165
166ULONG DDCmdRead (PDDCMDREADWRITE pRead)
167{
168 ULONG rc, ParmSize;
169 DDSHPARMS ParmIn;
170
171
172 ParmIn.pBuffer = Convert32to1616 (pRead);
173 ParmIn.rc = 0;
174 ParmSize = sizeof (DDCMDREADWRITE);
175
176 rc = DosDevIOCtl (aStreamVSD[pRead->hStream].hfileDDSHPDD,
177 (ULONG) DDSH_CATEGORY_INTERNAL,
178 (ULONG) DDCMD_READ,
179 (PVOID) &ParmIn,
180 (ULONG) ParmSize,
181 (PULONG) &ParmSize,
182 (PVOID) &ParmIn,
183 (ULONG) ParmSize,
184 (PULONG) &ParmSize );
185
186 if (!rc)
187 {
188 rc = ParmIn.rc;
189 }
190
191 return (rc);
192}
193
194ULONG DDCmdWrite (PDDCMDREADWRITE pWrite)
195{
196 ULONG rc, ParmSize;
197 DDSHPARMS ParmIn;
198
199
200 ParmIn.pBuffer = Convert32to1616 (pWrite);
201 ParmIn.rc = 0;
202 ParmSize = sizeof (DDCMDREADWRITE);
203
204 rc = DosDevIOCtl (aStreamVSD[pWrite->hStream].hfileDDSHPDD,
205 (ULONG) DDSH_CATEGORY_INTERNAL,
206 (ULONG) DDCMD_WRITE,
207 (PVOID) &ParmIn,
208 (ULONG) ParmSize,
209 (PULONG) &ParmSize,
210 (PVOID) &ParmIn,
211 (ULONG) ParmSize,
212 (PULONG) &ParmSize );
213
214 if (!rc)
215 {
216 rc = ParmIn.rc;
217 }
218
219 return (rc);
220}
221
222ULONG DDCmdStatus (PDDCMDSTATUS pDDCMDStatus)
223{
224 ULONG rc, ParmSize;
225 PVOID pBackupBuffer;
226 DDSHPARMS ParmIn;
227
228 pBackupBuffer = pDDCMDStatus->pStatus;
229 pDDCMDStatus->pStatus = Convert32to1616 (pDDCMDStatus->pStatus);
230 ParmIn.pBuffer = Convert32to1616 (pDDCMDStatus);
231 ParmIn.rc = 0;
232 ParmSize = sizeof (DDCMDSTATUS);
233
234 rc = DosDevIOCtl (aStreamVSD[pDDCMDStatus->hStream].hfileDDSHPDD,
235 (ULONG) DDSH_CATEGORY_INTERNAL,
236 (ULONG) DDCMD_STATUS,
237 (PVOID) &ParmIn,
238 (ULONG) ParmSize,
239 (PULONG) &ParmSize,
240 (PVOID) &ParmIn,
241 (ULONG) ParmSize,
242 (PULONG) &ParmSize );
243
244 if (!rc)
245 {
246 rc = ParmIn.rc;
247 }
248
249 pDDCMDStatus->pStatus = pBackupBuffer; // Restore original pointer
250
251 return (rc);
252}
253
254ULONG DDCmdControl (PDDCMDCONTROL pControl)
255{
256 ULONG rc, ParmSize;
257 DDSHPARMS ParmIn;
258 PVOID pBackupBuffer;
259
260 pBackupBuffer = pControl->pParm;
261 pControl->pParm = Convert32to1616 (pControl->pParm);
262 ParmIn.pBuffer = Convert32to1616 (pControl);
263 ParmIn.rc = 0;
264 ParmSize = sizeof (DDCMDCONTROL);
265
266 rc = DosDevIOCtl (aStreamVSD[pControl->hStream].hfileDDSHPDD,
267 (ULONG) DDSH_CATEGORY_INTERNAL,
268 (ULONG) DDCMD_CONTROL,
269 (PVOID) &ParmIn,
270 (ULONG) ParmSize,
271 (PULONG) &ParmSize,
272 (PVOID) &ParmIn,
273 (ULONG) ParmSize,
274 (PULONG) &ParmSize );
275
276 if (!rc)
277 {
278 rc = ParmIn.rc;
279 }
280
281 pControl->pParm = pBackupBuffer;
282
283 return (rc);
284}
285
286ULONG DDCmdRegister (PDDCMDREGISTER pRegister)
287{
288 ULONG rc, ParmSize;
289 DDSHPARMS ParmIn;
290 ULONG ActionTaken;
291
292 ParmIn.pBuffer = Convert32to1616 (pRegister);
293 ParmIn.rc = 0;
294 ParmSize = sizeof (DDCMDREGISTER);
295
296 //*****************
297 // Open Ring 0 stub
298 //*****************
299////////if (!(rc = DosOpen (pRegister->szR0StubName,
300
301 if (!(rc = DosOpen ("R0STUB$", // Hardcoding of stub
302 &aStreamVSD[pRegister->hStream].hfileDDSHPDD,
303 &ActionTaken,
304 0,
305 FILE_NORMAL,
306 OPEN_ACTION_OPEN_IF_EXISTS |
307 OPEN_ACTION_FAIL_IF_NEW,
308 OPEN_ACCESS_READWRITE |
309 OPEN_FLAGS_NOINHERIT |
310 OPEN_FLAGS_FAIL_ON_ERROR |
311 OPEN_SHARE_DENYNONE,
312 NULL)))
313 {
314
315 rc = DosDevIOCtl (aStreamVSD[pRegister->hStream].hfileDDSHPDD,
316 (ULONG) DDSH_CATEGORY_INTERNAL,
317 (ULONG) DDCMD_REG_STREAM,
318 (PVOID) &ParmIn,
319 (ULONG) ParmSize,
320 (PULONG) &ParmSize,
321 (PVOID) &ParmIn,
322 (ULONG) ParmSize,
323 (PULONG) &ParmSize );
324 }
325
326 if (!rc)
327 {
328 rc = ParmIn.rc;
329 }
330
331 return (rc);
332}
333
334
335
336
337ULONG DDCmdDeRegister (PDDCMDDEREGISTER pDeregister)
338{
339 ULONG rc, ParmSize;
340 DDSHPARMS ParmIn;
341
342
343 ParmIn.pBuffer = Convert32to1616 (pDeregister);
344 ParmIn.rc = 0;
345 ParmSize = sizeof (DDCMDDEREGISTER);
346
347 rc = DosDevIOCtl (aStreamVSD[pDeregister->hStream].hfileDDSHPDD,
348 (ULONG) DDSH_CATEGORY_INTERNAL,
349 (ULONG) DDCMD_DEREG_STREAM,
350 (PVOID) &ParmIn,
351 (ULONG) ParmSize,
352 (PULONG) &ParmSize,
353 (PVOID) &ParmIn,
354 (ULONG) ParmSize,
355 (PULONG) &ParmSize );
356
357 if (!rc)
358 {
359 rc = ParmIn.rc;
360 DosClose(aStreamVSD[pDeregister->hStream].hfileDDSHPDD);
361 aStreamVSD[pDeregister->hStream].hfileDDSHPDD = 0;
362 }
363
364 return (rc);
365}
366
367#endif
368//-----------------------------------------------------------------------------
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