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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
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-1:000000000000 0:4a0efb7baf70
1 /**
2 * OpenAL cross platform audio library
3 * Copyright (C) 1999-2007 by authors.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
18 * Or go to http://www.gnu.org/copyleft/lgpl.html
19 */
20
21 #include "config.h"
22
23 #define INITGUID
24 #include <stdlib.h>
25 #include <stdio.h>
26 #include <memory.h>
27
28 #include <dsound.h>
29 #include <mmreg.h>
30
31 #include "alMain.h"
32 #include "AL/al.h"
33 #include "AL/alc.h"
34
35 #ifndef DSSPEAKER_7POINT1
36 #define DSSPEAKER_7POINT1 7
37 #endif
38
39 DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71);
40
41 // Since DSound doesn't report the fragment size, just assume 4 fragments
42 #define DS_FRAGS 4
43
44 typedef struct {
45 // DirectSound Playback Device
46 LPDIRECTSOUND lpDS;
47 LPDIRECTSOUNDBUFFER DSpbuffer;
48 LPDIRECTSOUNDBUFFER DSsbuffer;
49
50 int killNow;
51 ALvoid *thread;
52 } DSoundData;
53
54
55 typedef struct {
56 ALCchar *name;
57 GUID guid;
58 } DevMap;
59 static DevMap DeviceList[16];
60
61
62 static ALuint DSoundProc(ALvoid *ptr)
63 {
64 ALCdevice *pDevice = (ALCdevice*)ptr;
65 DSoundData *pData = (DSoundData*)pDevice->ExtraData;
66 DWORD LastCursor = 0;
67 DWORD PlayCursor;
68 VOID *WritePtr1, *WritePtr2;
69 DWORD WriteCnt1, WriteCnt2;
70 DWORD BufferSize;
71 DWORD avail;
72 HRESULT err;
73
74 BufferSize = pDevice->UpdateSize * DS_FRAGS *
75 aluBytesFromFormat(pDevice->Format) *
76 aluChannelsFromFormat(pDevice->Format);
77
78 while(!pData->killNow)
79 {
80 // Get current play and write cursors
81 IDirectSoundBuffer_GetCurrentPosition(pData->DSsbuffer, &PlayCursor, NULL);
82 avail = (PlayCursor-LastCursor+BufferSize) % BufferSize;
83
84 if(avail == 0)
85 {
86 Sleep(1);
87 continue;
88 }
89
90 // Lock output buffer
91 WriteCnt1 = 0;
92 WriteCnt2 = 0;
93 err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
94
95 // If the buffer is lost, restore it, play and lock
96 if(err == DSERR_BUFFERLOST)
97 {
98 err = IDirectSoundBuffer_Restore(pData->DSsbuffer);
99 if(SUCCEEDED(err))
100 err = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
101 if(SUCCEEDED(err))
102 err = IDirectSoundBuffer_Lock(pData->DSsbuffer, LastCursor, avail, &WritePtr1, &WriteCnt1, &WritePtr2, &WriteCnt2, 0);
103 }
104
105 // Successfully locked the output buffer
106 if(SUCCEEDED(err))
107 {
108 // If we have an active context, mix data directly into output buffer otherwise fill with silence
109 SuspendContext(NULL);
110 aluMixData(pDevice->Context, WritePtr1, WriteCnt1, pDevice->Format);
111 aluMixData(pDevice->Context, WritePtr2, WriteCnt2, pDevice->Format);
112 ProcessContext(NULL);
113
114 // Unlock output buffer only when successfully locked
115 IDirectSoundBuffer_Unlock(pData->DSsbuffer, WritePtr1, WriteCnt1, WritePtr2, WriteCnt2);
116 }
117 else
118 AL_PRINT("Buffer lock error: %#lx\n", err);
119
120 // Update old write cursor location
121 LastCursor += WriteCnt1+WriteCnt2;
122 LastCursor %= BufferSize;
123 }
124
125 return 0;
126 }
127
128 static ALCboolean DSoundOpenPlayback(ALCdevice *device, const ALCchar *deviceName)
129 {
130 DSBUFFERDESC DSBDescription;
131 DSoundData *pData = NULL;
132 WAVEFORMATEXTENSIBLE OutputType;
133 DWORD frameSize = 0;
134 LPGUID guid = NULL;
135 DWORD speakers;
136 HRESULT hr;
137
138 if(deviceName)
139 {
140 int i;
141 for(i = 0;DeviceList[i].name;i++)
142 {
143 if(strcmp(deviceName, DeviceList[i].name) == 0)
144 {
145 device->szDeviceName = DeviceList[i].name;
146 if(i > 0)
147 guid = &DeviceList[i].guid;
148 break;
149 }
150 }
151 if(!DeviceList[i].name)
152 return ALC_FALSE;
153 }
154 else
155 device->szDeviceName = DeviceList[0].name;
156
157 memset(&OutputType, 0, sizeof(OutputType));
158
159 //Initialise requested device
160
161 pData = calloc(1, sizeof(DSoundData));
162 if(!pData)
163 {
164 SetALCError(ALC_OUT_OF_MEMORY);
165 return ALC_FALSE;
166 }
167
168 //DirectSound Init code
169 hr = DirectSoundCreate(guid, &pData->lpDS, NULL);
170 if(SUCCEEDED(hr))
171 hr = IDirectSound_SetCooperativeLevel(pData->lpDS, GetForegroundWindow(), DSSCL_PRIORITY);
172
173 if(SUCCEEDED(hr))
174 hr = IDirectSound_GetSpeakerConfig(pData->lpDS, &speakers);
175 if(SUCCEEDED(hr))
176 {
177 speakers = DSSPEAKER_CONFIG(speakers);
178 if(speakers == DSSPEAKER_MONO)
179 {
180 if(aluBytesFromFormat(device->Format) == 1)
181 device->Format = AL_FORMAT_MONO8;
182 else
183 device->Format = AL_FORMAT_MONO16;
184 }
185 else if(speakers == DSSPEAKER_STEREO)
186 {
187 if(aluBytesFromFormat(device->Format) == 1)
188 device->Format = AL_FORMAT_STEREO8;
189 else
190 device->Format = AL_FORMAT_STEREO16;
191 }
192 else if(speakers == DSSPEAKER_QUAD)
193 {
194 if(aluBytesFromFormat(device->Format) == 1)
195 device->Format = AL_FORMAT_QUAD8;
196 else
197 device->Format = AL_FORMAT_QUAD16;
198 OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
199 SPEAKER_FRONT_RIGHT |
200 SPEAKER_BACK_LEFT |
201 SPEAKER_BACK_RIGHT;
202 }
203 else if(speakers == DSSPEAKER_5POINT1)
204 {
205 if(aluBytesFromFormat(device->Format) == 1)
206 device->Format = AL_FORMAT_51CHN8;
207 else
208 device->Format = AL_FORMAT_51CHN16;
209 OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
210 SPEAKER_FRONT_RIGHT |
211 SPEAKER_FRONT_CENTER |
212 SPEAKER_LOW_FREQUENCY |
213 SPEAKER_BACK_LEFT |
214 SPEAKER_BACK_RIGHT;
215 }
216 else if(speakers == DSSPEAKER_7POINT1)
217 {
218 if(aluBytesFromFormat(device->Format) == 1)
219 device->Format = AL_FORMAT_71CHN8;
220 else
221 device->Format = AL_FORMAT_71CHN16;
222 OutputType.dwChannelMask = SPEAKER_FRONT_LEFT |
223 SPEAKER_FRONT_RIGHT |
224 SPEAKER_FRONT_CENTER |
225 SPEAKER_LOW_FREQUENCY |
226 SPEAKER_BACK_LEFT |
227 SPEAKER_BACK_RIGHT |
228 SPEAKER_SIDE_LEFT |
229 SPEAKER_SIDE_RIGHT;
230 }
231 frameSize = aluBytesFromFormat(device->Format) *
232 aluChannelsFromFormat(device->Format);
233
234 OutputType.Format.wFormatTag = WAVE_FORMAT_PCM;
235 OutputType.Format.nChannels = aluChannelsFromFormat(device->Format);
236 OutputType.Format.wBitsPerSample = aluBytesFromFormat(device->Format) * 8;
237 OutputType.Format.nBlockAlign = OutputType.Format.nChannels*OutputType.Format.wBitsPerSample/8;
238 OutputType.Format.nSamplesPerSec = device->Frequency;
239 OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec*OutputType.Format.nBlockAlign;
240 OutputType.Format.cbSize = 0;
241
242 device->UpdateSize /= DS_FRAGS;
243 }
244
245 if(OutputType.Format.nChannels > 2)
246 {
247 OutputType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
248 OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample;
249 OutputType.Format.cbSize = 22;
250 OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
251 }
252 else
253 {
254 if(SUCCEEDED(hr))
255 {
256 memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
257 DSBDescription.dwSize=sizeof(DSBUFFERDESC);
258 DSBDescription.dwFlags=DSBCAPS_PRIMARYBUFFER;
259 hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSpbuffer, NULL);
260 }
261 if(SUCCEEDED(hr))
262 hr = IDirectSoundBuffer_SetFormat(pData->DSpbuffer,&OutputType.Format);
263 }
264
265 if(SUCCEEDED(hr))
266 {
267 memset(&DSBDescription,0,sizeof(DSBUFFERDESC));
268 DSBDescription.dwSize=sizeof(DSBUFFERDESC);
269 DSBDescription.dwFlags=DSBCAPS_GLOBALFOCUS|DSBCAPS_GETCURRENTPOSITION2;
270 DSBDescription.dwBufferBytes=device->UpdateSize * DS_FRAGS * frameSize;
271 DSBDescription.lpwfxFormat=&OutputType.Format;
272 hr = IDirectSound_CreateSoundBuffer(pData->lpDS, &DSBDescription, &pData->DSsbuffer, NULL);
273 }
274
275 if(SUCCEEDED(hr))
276 hr = IDirectSoundBuffer_Play(pData->DSsbuffer, 0, 0, DSBPLAY_LOOPING);
277
278 device->ExtraData = pData;
279 pData->thread = StartThread(DSoundProc, device);
280 if(!pData->thread)
281 hr = E_FAIL;
282
283 if(FAILED(hr))
284 {
285 if (pData->DSsbuffer)
286 IDirectSoundBuffer_Release(pData->DSsbuffer);
287 if (pData->DSpbuffer)
288 IDirectSoundBuffer_Release(pData->DSpbuffer);
289 if (pData->lpDS)
290 IDirectSound_Release(pData->lpDS);
291
292 free(pData);
293 return ALC_FALSE;
294 }
295
296 return ALC_TRUE;
297 }
298
299 static void DSoundClosePlayback(ALCdevice *device)
300 {
301 DSoundData *pData = device->ExtraData;
302
303 pData->killNow = 1;
304 StopThread(pData->thread);
305
306 IDirectSoundBuffer_Release(pData->DSsbuffer);
307 if (pData->DSpbuffer)
308 IDirectSoundBuffer_Release(pData->DSpbuffer);
309 IDirectSound_Release(pData->lpDS);
310
311 free(pData);
312 device->ExtraData = NULL;
313 }
314
315
316 static ALCboolean DSoundOpenCapture(ALCdevice *pDevice, const ALCchar *deviceName, ALCuint frequency, ALCenum format, ALCsizei SampleSize)
317 {
318 (void)pDevice;
319 (void)deviceName;
320 (void)frequency;
321 (void)format;
322 (void)SampleSize;
323 return ALC_FALSE;
324 }
325
326 static void DSoundCloseCapture(ALCdevice *pDevice)
327 {
328 (void)pDevice;
329 }
330
331 static void DSoundStartCapture(ALCdevice *pDevice)
332 {
333 (void)pDevice;
334 }
335
336 static void DSoundStopCapture(ALCdevice *pDevice)
337 {
338 (void)pDevice;
339 }
340
341 static void DSoundCaptureSamples(ALCdevice *pDevice, ALCvoid *pBuffer, ALCuint lSamples)
342 {
343 (void)pDevice;
344 (void)pBuffer;
345 (void)lSamples;
346 }
347
348 static ALCuint DSoundAvailableSamples(ALCdevice *pDevice)
349 {
350 (void)pDevice;
351 return 0;
352 }
353
354
355 BackendFuncs DSoundFuncs = {
356 DSoundOpenPlayback,
357 DSoundClosePlayback,
358 DSoundOpenCapture,
359 DSoundCloseCapture,
360 DSoundStartCapture,
361 DSoundStopCapture,
362 DSoundCaptureSamples,
363 DSoundAvailableSamples
364 };
365
366 static BOOL CALLBACK DSoundEnumDevices(LPGUID guid, LPCSTR desc, LPCSTR drvname, LPVOID data)
367 {
368 size_t *iter = data;
369 (void)drvname;
370
371 if(guid)
372 {
373 char str[128];
374 snprintf(str, sizeof(str), "DirectSound Software on %s", desc);
375 DeviceList[*iter].name = AppendAllDeviceList(str);
376 DeviceList[*iter].guid = *guid;
377 (*iter)++;
378 }
379 else
380 DeviceList[0].name = AppendDeviceList("DirectSound Software");
381
382 return TRUE;
383 }
384
385 void alcDSoundInit(BackendFuncs *FuncList)
386 {
387 size_t iter = 1;
388 HRESULT hr;
389
390 *FuncList = DSoundFuncs;
391
392 hr = DirectSoundEnumerate(DSoundEnumDevices, &iter);
393 if(FAILED(hr))
394 AL_PRINT("Error enumerating DirectSound devices (%#x)!\n", (unsigned int)hr);
395 }