File: ifusionsoundbuffer.c

package info (click to toggle)
fusionsound 0.9.25-2
  • links: PTS
  • area: main
  • in suites: etch, etch-m68k
  • size: 3,924 kB
  • ctags: 1,275
  • sloc: ansic: 13,230; sh: 8,306; perl: 668; makefile: 285
file content (371 lines) | stat: -rw-r--r-- 9,702 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
/*
   (c) Copyright 2000-2002  convergence integrated media GmbH.
   (c) Copyright 2002       convergence GmbH.

   All rights reserved.

   Written by Denis Oliver Kropp <dok@directfb.org>,
              Andreas Hundt <andi@fischlustig.de> and
              Sven Neumann <sven@convergence.de>.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with this library; if not, write to the
   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
*/

#include <pthread.h>

#include <fusionsound.h>

#include <core/playback.h>
#include <core/sound_buffer.h>

#include <direct/interface.h>
#include <direct/util.h>

#include "ifusionsoundplayback.h"

#include "ifusionsoundbuffer.h"

/*
 * private data struct of IFusionSoundBuffer
 */
typedef struct {
     int                    ref;             /* reference counter */

     CoreSound             *core;
     CoreSoundBuffer       *buffer;

     int                    size;
     int                    channels;
     FSSampleFormat         format;
     int                    rate;

     bool                   locked;

     float                  left;
     float                  right;

     CorePlayback          *looping;
     pthread_mutex_t        lock;
} IFusionSoundBuffer_data;


static void
IFusionSoundBuffer_Destruct( IFusionSoundBuffer *thiz )
{
     IFusionSoundBuffer_data *data = (IFusionSoundBuffer_data*)thiz->priv;

     D_ASSERT( data->buffer != NULL );

     if (data->locked)
          fs_buffer_unlock( data->buffer );

     /* Stop and throw away looping playback. */
     if (data->looping) {
          fs_playback_stop( data->looping, false );
          fs_playback_unref( data->looping );
     }

     fs_buffer_unref( data->buffer );

     pthread_mutex_destroy( &data->lock );

     DIRECT_DEALLOCATE_INTERFACE( thiz );
}

static DFBResult
IFusionSoundBuffer_AddRef( IFusionSoundBuffer *thiz )
{
     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     data->ref++;

     return DFB_OK;
}

static DFBResult
IFusionSoundBuffer_Release( IFusionSoundBuffer *thiz )
{
     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     if (--data->ref == 0)
          IFusionSoundBuffer_Destruct( thiz );

     return DFB_OK;
}


static DFBResult
IFusionSoundBuffer_GetDescription( IFusionSoundBuffer  *thiz,
                                   FSBufferDescription *desc )
{
     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     if (!desc)
          return DFB_INVARG;

     desc->flags = FSBDF_CHANNELS | FSBDF_LENGTH |
                   FSBDF_SAMPLEFORMAT | FSBDF_SAMPLERATE;

     desc->channels     = data->channels;
     desc->length       = data->size;
     desc->sampleformat = data->format;
     desc->samplerate   = data->rate;

     return DFB_OK;
}

static DFBResult
IFusionSoundBuffer_Lock( IFusionSoundBuffer  *thiz,
                         void               **ret_data )
{
     DFBResult  ret;
     void      *lock_data;
     int        lock_bytes;

     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     if (!ret_data)
          return DFB_INVARG;

     if (data->locked)
          return DFB_LOCKED;

     ret = fs_buffer_lock( data->buffer, 0, 0, &lock_data, &lock_bytes );
     if (ret)
          return ret;

     data->locked = true;

     *ret_data = lock_data;

     /* FIXME: what about returning lock_bytes? */

     return DFB_OK;
}

static DFBResult
IFusionSoundBuffer_Unlock( IFusionSoundBuffer *thiz )
{
     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     if (!data->locked)
          return DFB_OK;

     fs_buffer_unlock( data->buffer );

     data->locked = false;

     return DFB_OK;
}

static DFBResult
IFusionSoundBuffer_SetPan( IFusionSoundBuffer *thiz,
                           float               pan )
{
     float left  = 1.0f;
     float right = 1.0f;

     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     if (pan < -1.0f || pan > 1.0f)
          return DFB_INVARG;

     if (pan < 0.0f)
          right = 1.0f + pan;
     else if (pan > 0.0f)
          left = 1.0f - pan;

     data->left  = left;
     data->right = right;

     return DFB_OK;
}

static DFBResult
IFusionSoundBuffer_Play( IFusionSoundBuffer *thiz,
                         FSBufferPlayFlags   flags )
{
     DFBResult     ret;
     CorePlayback *playback;

     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     if (flags & ~FSPLAY_ALL)
          return DFB_INVARG;

     /* Choose looping playback mode. */
     if (flags & FSPLAY_LOOPING) {
          pthread_mutex_lock( &data->lock );

          /* Return error if already running a looping playing. */
          if (data->looping) {
               pthread_mutex_unlock( &data->lock );
               return DFB_BUSY;
          }

          /* Create a playback object. */
          ret = fs_playback_create( data->core, data->buffer, false, &playback );
          if (ret) {
               pthread_mutex_unlock( &data->lock );
               return ret;
          }

          /* Set values produced by SetPan(). */
          if (flags & FSPLAY_PAN)
               fs_playback_set_volume( playback, data->left, data->right );

          /* Set looping playback. */
          fs_playback_set_stop( playback, -1 );

          /* Start the playback. */
          ret = fs_playback_start( playback, false );
          if (ret) {
               fs_playback_unref( playback );
               pthread_mutex_unlock( &data->lock );
               return ret;
          }

          /* Remember looping playback. */
          data->looping = playback;

          pthread_mutex_unlock( &data->lock );
     }
     else {
          /* Create a playback object. */
          ret = fs_playback_create( data->core, data->buffer, false, &playback );
          if (ret) {
               pthread_mutex_unlock( &data->lock );
               return ret;
          }

          /* Set values produced by SetPan(). */
          if (flags & FSPLAY_PAN)
               fs_playback_set_volume( playback, data->left, data->right );

          /* Start the playback. */
          ret = fs_playback_start( playback, false );

          /*
           * Already throw away playback object. It has a global reference while
           * it's being played and gets destroyed after playback has finished.
           */
          fs_playback_unref( playback );
     }

     return ret;
}

static DFBResult
IFusionSoundBuffer_Stop( IFusionSoundBuffer *thiz )
{
     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     pthread_mutex_lock( &data->lock );

     /* Stop and throw away looping playback. */
     if (data->looping) {
          fs_playback_stop( data->looping, false );
          fs_playback_unref( data->looping );

          data->looping = NULL;
     }

     pthread_mutex_unlock( &data->lock );

     return DFB_OK;
}

static DFBResult
IFusionSoundBuffer_CreatePlayback( IFusionSoundBuffer    *thiz,
                                   IFusionSoundPlayback **ret_interface )
{
     DFBResult             ret;
     CorePlayback         *playback;
     IFusionSoundPlayback *interface;

     DIRECT_INTERFACE_GET_DATA(IFusionSoundBuffer)

     if (!ret_interface)
          return DFB_INVARG;

     ret = fs_playback_create( data->core, data->buffer, true, &playback );
     if (ret)
          return ret;

     DIRECT_ALLOCATE_INTERFACE( interface, IFusionSoundPlayback );

     ret = IFusionSoundPlayback_Construct( interface, playback, data->size );
     if (ret)
          *ret_interface = NULL;
     else
          *ret_interface = interface;

     fs_playback_unref( playback );

     return ret;
}

/******/

DFBResult
IFusionSoundBuffer_Construct( IFusionSoundBuffer *thiz,
                              CoreSound          *core,
                              CoreSoundBuffer    *buffer,
                              int                 size,
                              int                 channels,
                              FSSampleFormat      format,
                              int                 rate )
{
     DIRECT_ALLOCATE_INTERFACE_DATA(thiz, IFusionSoundBuffer)

     /* Increase reference counter of the buffer. */
     if (fs_buffer_ref( buffer )) {
          DIRECT_DEALLOCATE_INTERFACE( thiz );

          return DFB_FUSION;
     }

     /* Initialize private data. */
     data->ref      = 1;
     data->core     = core;
     data->buffer   = buffer;
     data->size     = size;
     data->channels = channels;
     data->format   = format;
     data->rate     = rate;
     data->left     = 1.0f;
     data->right    = 1.0f;

     direct_util_recursive_pthread_mutex_init( &data->lock );

     /* Initialize method table. */
     thiz->AddRef         = IFusionSoundBuffer_AddRef;
     thiz->Release        = IFusionSoundBuffer_Release;

     thiz->GetDescription = IFusionSoundBuffer_GetDescription;

     thiz->Lock           = IFusionSoundBuffer_Lock;
     thiz->Unlock         = IFusionSoundBuffer_Unlock;

     thiz->SetPan         = IFusionSoundBuffer_SetPan;
     thiz->Play           = IFusionSoundBuffer_Play;
     thiz->Stop           = IFusionSoundBuffer_Stop;

     thiz->CreatePlayback = IFusionSoundBuffer_CreatePlayback;

     return DFB_OK;
}