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1
/* public domain */
2

    
3
#include "qemu-common.h"
4
#include "sysemu/sysemu.h"
5
#include "audio.h"
6

    
7
#define AUDIO_CAP "winwave"
8
#include "audio_int.h"
9

    
10
#include <windows.h>
11
#include <mmsystem.h>
12

    
13
#include "audio_win_int.h"
14

    
15
static struct {
16
    int dac_headers;
17
    int dac_samples;
18
    int adc_headers;
19
    int adc_samples;
20
} conf = {
21
    .dac_headers = 4,
22
    .dac_samples = 1024,
23
    .adc_headers = 4,
24
    .adc_samples = 1024
25
};
26

    
27
typedef struct {
28
    HWVoiceOut hw;
29
    HWAVEOUT hwo;
30
    WAVEHDR *hdrs;
31
    HANDLE event;
32
    void *pcm_buf;
33
    int avail;
34
    int pending;
35
    int curhdr;
36
    int paused;
37
    CRITICAL_SECTION crit_sect;
38
} WaveVoiceOut;
39

    
40
typedef struct {
41
    HWVoiceIn hw;
42
    HWAVEIN hwi;
43
    WAVEHDR *hdrs;
44
    HANDLE event;
45
    void *pcm_buf;
46
    int curhdr;
47
    int paused;
48
    int rpos;
49
    int avail;
50
    CRITICAL_SECTION crit_sect;
51
} WaveVoiceIn;
52

    
53
static void winwave_log_mmresult (MMRESULT mr)
54
{
55
    const char *str = "BUG";
56

    
57
    switch (mr) {
58
    case MMSYSERR_NOERROR:
59
        str = "Success";
60
        break;
61

    
62
    case MMSYSERR_INVALHANDLE:
63
        str = "Specified device handle is invalid";
64
        break;
65

    
66
    case MMSYSERR_BADDEVICEID:
67
        str = "Specified device id is out of range";
68
        break;
69

    
70
    case MMSYSERR_NODRIVER:
71
        str = "No device driver is present";
72
        break;
73

    
74
    case MMSYSERR_NOMEM:
75
        str = "Unable to allocate or lock memory";
76
        break;
77

    
78
    case WAVERR_SYNC:
79
        str = "Device is synchronous but waveOutOpen was called "
80
            "without using the WINWAVE_ALLOWSYNC flag";
81
        break;
82

    
83
    case WAVERR_UNPREPARED:
84
        str = "The data block pointed to by the pwh parameter "
85
            "hasn't been prepared";
86
        break;
87

    
88
    case WAVERR_STILLPLAYING:
89
        str = "There are still buffers in the queue";
90
        break;
91

    
92
    default:
93
        dolog ("Reason: Unknown (MMRESULT %#x)\n", mr);
94
        return;
95
    }
96

    
97
    dolog ("Reason: %s\n", str);
98
}
99

    
100
static void GCC_FMT_ATTR (2, 3) winwave_logerr (
101
    MMRESULT mr,
102
    const char *fmt,
103
    ...
104
    )
105
{
106
    va_list ap;
107

    
108
    va_start (ap, fmt);
109
    AUD_vlog (AUDIO_CAP, fmt, ap);
110
    va_end (ap);
111

    
112
    AUD_log (NULL, " failed\n");
113
    winwave_log_mmresult (mr);
114
}
115

    
116
static void winwave_anal_close_out (WaveVoiceOut *wave)
117
{
118
    MMRESULT mr;
119

    
120
    mr = waveOutClose (wave->hwo);
121
    if (mr != MMSYSERR_NOERROR) {
122
        winwave_logerr (mr, "waveOutClose");
123
    }
124
    wave->hwo = NULL;
125
}
126

    
127
static void CALLBACK winwave_callback_out (
128
    HWAVEOUT hwo,
129
    UINT msg,
130
    DWORD_PTR dwInstance,
131
    DWORD_PTR dwParam1,
132
    DWORD_PTR dwParam2
133
    )
134
{
135
    WaveVoiceOut *wave = (WaveVoiceOut *) dwInstance;
136

    
137
    switch (msg) {
138
    case WOM_DONE:
139
        {
140
            WAVEHDR *h = (WAVEHDR *) dwParam1;
141
            if (!h->dwUser) {
142
                h->dwUser = 1;
143
                EnterCriticalSection (&wave->crit_sect);
144
                {
145
                    wave->avail += conf.dac_samples;
146
                }
147
                LeaveCriticalSection (&wave->crit_sect);
148
                if (wave->hw.poll_mode) {
149
                    if (!SetEvent (wave->event)) {
150
                        dolog ("DAC SetEvent failed %lx\n", GetLastError ());
151
                    }
152
                }
153
            }
154
        }
155
        break;
156

    
157
    case WOM_CLOSE:
158
    case WOM_OPEN:
159
        break;
160

    
161
    default:
162
        dolog ("unknown wave out callback msg %x\n", msg);
163
    }
164
}
165

    
166
static int winwave_init_out (HWVoiceOut *hw, struct audsettings *as)
167
{
168
    int i;
169
    int err;
170
    MMRESULT mr;
171
    WAVEFORMATEX wfx;
172
    WaveVoiceOut *wave;
173

    
174
    wave = (WaveVoiceOut *) hw;
175

    
176
    InitializeCriticalSection (&wave->crit_sect);
177

    
178
    err = waveformat_from_audio_settings (&wfx, as);
179
    if (err) {
180
        goto err0;
181
    }
182

    
183
    mr = waveOutOpen (&wave->hwo, WAVE_MAPPER, &wfx,
184
                      (DWORD_PTR) winwave_callback_out,
185
                      (DWORD_PTR) wave, CALLBACK_FUNCTION);
186
    if (mr != MMSYSERR_NOERROR) {
187
        winwave_logerr (mr, "waveOutOpen");
188
        goto err1;
189
    }
190

    
191
    wave->hdrs = audio_calloc (AUDIO_FUNC, conf.dac_headers,
192
                               sizeof (*wave->hdrs));
193
    if (!wave->hdrs) {
194
        goto err2;
195
    }
196

    
197
    audio_pcm_init_info (&hw->info, as);
198
    hw->samples = conf.dac_samples * conf.dac_headers;
199
    wave->avail = hw->samples;
200

    
201
    wave->pcm_buf = audio_calloc (AUDIO_FUNC, conf.dac_samples,
202
                                  conf.dac_headers << hw->info.shift);
203
    if (!wave->pcm_buf) {
204
        goto err3;
205
    }
206

    
207
    for (i = 0; i < conf.dac_headers; ++i) {
208
        WAVEHDR *h = &wave->hdrs[i];
209

    
210
        h->dwUser = 0;
211
        h->dwBufferLength = conf.dac_samples << hw->info.shift;
212
        h->lpData = advance (wave->pcm_buf, i * h->dwBufferLength);
213
        h->dwFlags = 0;
214

    
215
        mr = waveOutPrepareHeader (wave->hwo, h, sizeof (*h));
216
        if (mr != MMSYSERR_NOERROR) {
217
            winwave_logerr (mr, "waveOutPrepareHeader(%d)", i);
218
            goto err4;
219
        }
220
    }
221

    
222
    return 0;
223

    
224
 err4:
225
    g_free (wave->pcm_buf);
226
 err3:
227
    g_free (wave->hdrs);
228
 err2:
229
    winwave_anal_close_out (wave);
230
 err1:
231
 err0:
232
    return -1;
233
}
234

    
235
static int winwave_write (SWVoiceOut *sw, void *buf, int len)
236
{
237
    return audio_pcm_sw_write (sw, buf, len);
238
}
239

    
240
static int winwave_run_out (HWVoiceOut *hw, int live)
241
{
242
    WaveVoiceOut *wave = (WaveVoiceOut *) hw;
243
    int decr;
244
    int doreset;
245

    
246
    EnterCriticalSection (&wave->crit_sect);
247
    {
248
        decr = audio_MIN (live, wave->avail);
249
        decr = audio_pcm_hw_clip_out (hw, wave->pcm_buf, decr, wave->pending);
250
        wave->pending += decr;
251
        wave->avail -= decr;
252
    }
253
    LeaveCriticalSection (&wave->crit_sect);
254

    
255
    doreset = hw->poll_mode && (wave->pending >= conf.dac_samples);
256
    if (doreset && !ResetEvent (wave->event)) {
257
        dolog ("DAC ResetEvent failed %lx\n", GetLastError ());
258
    }
259

    
260
    while (wave->pending >= conf.dac_samples) {
261
        MMRESULT mr;
262
        WAVEHDR *h = &wave->hdrs[wave->curhdr];
263

    
264
        h->dwUser = 0;
265
        mr = waveOutWrite (wave->hwo, h, sizeof (*h));
266
        if (mr != MMSYSERR_NOERROR) {
267
            winwave_logerr (mr, "waveOutWrite(%d)", wave->curhdr);
268
            break;
269
        }
270

    
271
        wave->pending -= conf.dac_samples;
272
        wave->curhdr = (wave->curhdr + 1) % conf.dac_headers;
273
    }
274

    
275
    return decr;
276
}
277

    
278
static void winwave_poll (void *opaque)
279
{
280
    (void) opaque;
281
    audio_run ("winwave_poll");
282
}
283

    
284
static void winwave_fini_out (HWVoiceOut *hw)
285
{
286
    int i;
287
    MMRESULT mr;
288
    WaveVoiceOut *wave = (WaveVoiceOut *) hw;
289

    
290
    mr = waveOutReset (wave->hwo);
291
    if (mr != MMSYSERR_NOERROR) {
292
        winwave_logerr (mr, "waveOutReset");
293
    }
294

    
295
    for (i = 0; i < conf.dac_headers; ++i) {
296
        mr = waveOutUnprepareHeader (wave->hwo, &wave->hdrs[i],
297
                                     sizeof (wave->hdrs[i]));
298
        if (mr != MMSYSERR_NOERROR) {
299
            winwave_logerr (mr, "waveOutUnprepareHeader(%d)", i);
300
        }
301
    }
302

    
303
    winwave_anal_close_out (wave);
304

    
305
    if (wave->event) {
306
        qemu_del_wait_object (wave->event, winwave_poll, wave);
307
        if (!CloseHandle (wave->event)) {
308
            dolog ("DAC CloseHandle failed %lx\n", GetLastError ());
309
        }
310
        wave->event = NULL;
311
    }
312

    
313
    g_free (wave->pcm_buf);
314
    wave->pcm_buf = NULL;
315

    
316
    g_free (wave->hdrs);
317
    wave->hdrs = NULL;
318
}
319

    
320
static int winwave_ctl_out (HWVoiceOut *hw, int cmd, ...)
321
{
322
    MMRESULT mr;
323
    WaveVoiceOut *wave = (WaveVoiceOut *) hw;
324

    
325
    switch (cmd) {
326
    case VOICE_ENABLE:
327
        {
328
            va_list ap;
329
            int poll_mode;
330

    
331
            va_start (ap, cmd);
332
            poll_mode = va_arg (ap, int);
333
            va_end (ap);
334

    
335
            if (poll_mode && !wave->event) {
336
                wave->event = CreateEvent (NULL, TRUE, TRUE, NULL);
337
                if (!wave->event) {
338
                    dolog ("DAC CreateEvent: %lx, poll mode will be disabled\n",
339
                           GetLastError ());
340
                }
341
            }
342

    
343
            if (wave->event) {
344
                int ret;
345

    
346
                ret = qemu_add_wait_object (wave->event, winwave_poll, wave);
347
                hw->poll_mode = (ret == 0);
348
            }
349
            else {
350
                hw->poll_mode = 0;
351
            }
352
            wave->paused = 0;
353
        }
354
        return 0;
355

    
356
    case VOICE_DISABLE:
357
        if (!wave->paused) {
358
            mr = waveOutReset (wave->hwo);
359
            if (mr != MMSYSERR_NOERROR) {
360
                winwave_logerr (mr, "waveOutReset");
361
            }
362
            else {
363
                wave->paused = 1;
364
            }
365
        }
366
        if (wave->event) {
367
            qemu_del_wait_object (wave->event, winwave_poll, wave);
368
        }
369
        return 0;
370
    }
371
    return -1;
372
}
373

    
374
static void winwave_anal_close_in (WaveVoiceIn *wave)
375
{
376
    MMRESULT mr;
377

    
378
    mr = waveInClose (wave->hwi);
379
    if (mr != MMSYSERR_NOERROR) {
380
        winwave_logerr (mr, "waveInClose");
381
    }
382
    wave->hwi = NULL;
383
}
384

    
385
static void CALLBACK winwave_callback_in (
386
    HWAVEIN *hwi,
387
    UINT msg,
388
    DWORD_PTR dwInstance,
389
    DWORD_PTR dwParam1,
390
    DWORD_PTR dwParam2
391
    )
392
{
393
    WaveVoiceIn *wave = (WaveVoiceIn *) dwInstance;
394

    
395
    switch (msg) {
396
    case WIM_DATA:
397
        {
398
            WAVEHDR *h = (WAVEHDR *) dwParam1;
399
            if (!h->dwUser) {
400
                h->dwUser = 1;
401
                EnterCriticalSection (&wave->crit_sect);
402
                {
403
                    wave->avail += conf.adc_samples;
404
                }
405
                LeaveCriticalSection (&wave->crit_sect);
406
                if (wave->hw.poll_mode) {
407
                    if (!SetEvent (wave->event)) {
408
                        dolog ("ADC SetEvent failed %lx\n", GetLastError ());
409
                    }
410
                }
411
            }
412
        }
413
        break;
414

    
415
    case WIM_CLOSE:
416
    case WIM_OPEN:
417
        break;
418

    
419
    default:
420
        dolog ("unknown wave in callback msg %x\n", msg);
421
    }
422
}
423

    
424
static void winwave_add_buffers (WaveVoiceIn *wave, int samples)
425
{
426
    int doreset;
427

    
428
    doreset = wave->hw.poll_mode && (samples >= conf.adc_samples);
429
    if (doreset && !ResetEvent (wave->event)) {
430
        dolog ("ADC ResetEvent failed %lx\n", GetLastError ());
431
    }
432

    
433
    while (samples >= conf.adc_samples) {
434
        MMRESULT mr;
435
        WAVEHDR *h = &wave->hdrs[wave->curhdr];
436

    
437
        h->dwUser = 0;
438
        mr = waveInAddBuffer (wave->hwi, h, sizeof (*h));
439
        if (mr != MMSYSERR_NOERROR) {
440
            winwave_logerr (mr, "waveInAddBuffer(%d)", wave->curhdr);
441
        }
442
        wave->curhdr = (wave->curhdr + 1) % conf.adc_headers;
443
        samples -= conf.adc_samples;
444
    }
445
}
446

    
447
static int winwave_init_in (HWVoiceIn *hw, struct audsettings *as)
448
{
449
    int i;
450
    int err;
451
    MMRESULT mr;
452
    WAVEFORMATEX wfx;
453
    WaveVoiceIn *wave;
454

    
455
    wave = (WaveVoiceIn *) hw;
456

    
457
    InitializeCriticalSection (&wave->crit_sect);
458

    
459
    err = waveformat_from_audio_settings (&wfx, as);
460
    if (err) {
461
        goto err0;
462
    }
463

    
464
    mr = waveInOpen (&wave->hwi, WAVE_MAPPER, &wfx,
465
                     (DWORD_PTR) winwave_callback_in,
466
                     (DWORD_PTR) wave, CALLBACK_FUNCTION);
467
    if (mr != MMSYSERR_NOERROR) {
468
        winwave_logerr (mr, "waveInOpen");
469
        goto err1;
470
    }
471

    
472
    wave->hdrs = audio_calloc (AUDIO_FUNC, conf.dac_headers,
473
                               sizeof (*wave->hdrs));
474
    if (!wave->hdrs) {
475
        goto err2;
476
    }
477

    
478
    audio_pcm_init_info (&hw->info, as);
479
    hw->samples = conf.adc_samples * conf.adc_headers;
480
    wave->avail = 0;
481

    
482
    wave->pcm_buf = audio_calloc (AUDIO_FUNC, conf.adc_samples,
483
                                  conf.adc_headers << hw->info.shift);
484
    if (!wave->pcm_buf) {
485
        goto err3;
486
    }
487

    
488
    for (i = 0; i < conf.adc_headers; ++i) {
489
        WAVEHDR *h = &wave->hdrs[i];
490

    
491
        h->dwUser = 0;
492
        h->dwBufferLength = conf.adc_samples << hw->info.shift;
493
        h->lpData = advance (wave->pcm_buf, i * h->dwBufferLength);
494
        h->dwFlags = 0;
495

    
496
        mr = waveInPrepareHeader (wave->hwi, h, sizeof (*h));
497
        if (mr != MMSYSERR_NOERROR) {
498
            winwave_logerr (mr, "waveInPrepareHeader(%d)", i);
499
            goto err4;
500
        }
501
    }
502

    
503
    wave->paused = 1;
504
    winwave_add_buffers (wave, hw->samples);
505
    return 0;
506

    
507
 err4:
508
    g_free (wave->pcm_buf);
509
 err3:
510
    g_free (wave->hdrs);
511
 err2:
512
    winwave_anal_close_in (wave);
513
 err1:
514
 err0:
515
    return -1;
516
}
517

    
518
static void winwave_fini_in (HWVoiceIn *hw)
519
{
520
    int i;
521
    MMRESULT mr;
522
    WaveVoiceIn *wave = (WaveVoiceIn *) hw;
523

    
524
    mr = waveInReset (wave->hwi);
525
    if (mr != MMSYSERR_NOERROR) {
526
        winwave_logerr (mr, "waveInReset");
527
    }
528

    
529
    for (i = 0; i < conf.adc_headers; ++i) {
530
        mr = waveInUnprepareHeader (wave->hwi, &wave->hdrs[i],
531
                                     sizeof (wave->hdrs[i]));
532
        if (mr != MMSYSERR_NOERROR) {
533
            winwave_logerr (mr, "waveInUnprepareHeader(%d)", i);
534
        }
535
    }
536

    
537
    winwave_anal_close_in (wave);
538

    
539
    if (wave->event) {
540
        qemu_del_wait_object (wave->event, winwave_poll, wave);
541
        if (!CloseHandle (wave->event)) {
542
            dolog ("ADC CloseHandle failed %lx\n", GetLastError ());
543
        }
544
        wave->event = NULL;
545
    }
546

    
547
    g_free (wave->pcm_buf);
548
    wave->pcm_buf = NULL;
549

    
550
    g_free (wave->hdrs);
551
    wave->hdrs = NULL;
552
}
553

    
554
static int winwave_run_in (HWVoiceIn *hw)
555
{
556
    WaveVoiceIn *wave = (WaveVoiceIn *) hw;
557
    int live = audio_pcm_hw_get_live_in (hw);
558
    int dead = hw->samples - live;
559
    int decr, ret;
560

    
561
    if (!dead) {
562
        return 0;
563
    }
564

    
565
    EnterCriticalSection (&wave->crit_sect);
566
    {
567
        decr = audio_MIN (dead, wave->avail);
568
        wave->avail -= decr;
569
    }
570
    LeaveCriticalSection (&wave->crit_sect);
571

    
572
    ret = decr;
573
    while (decr) {
574
        int left = hw->samples - hw->wpos;
575
        int conv = audio_MIN (left, decr);
576
        hw->conv (hw->conv_buf + hw->wpos,
577
                  advance (wave->pcm_buf, wave->rpos << hw->info.shift),
578
                  conv);
579

    
580
        wave->rpos = (wave->rpos + conv) % hw->samples;
581
        hw->wpos = (hw->wpos + conv) % hw->samples;
582
        decr -= conv;
583
    }
584

    
585
    winwave_add_buffers (wave, ret);
586
    return ret;
587
}
588

    
589
static int winwave_read (SWVoiceIn *sw, void *buf, int size)
590
{
591
    return audio_pcm_sw_read (sw, buf, size);
592
}
593

    
594
static int winwave_ctl_in (HWVoiceIn *hw, int cmd, ...)
595
{
596
    MMRESULT mr;
597
    WaveVoiceIn *wave = (WaveVoiceIn *) hw;
598

    
599
    switch (cmd) {
600
    case VOICE_ENABLE:
601
        {
602
            va_list ap;
603
            int poll_mode;
604

    
605
            va_start (ap, cmd);
606
            poll_mode = va_arg (ap, int);
607
            va_end (ap);
608

    
609
            if (poll_mode && !wave->event) {
610
                wave->event = CreateEvent (NULL, TRUE, TRUE, NULL);
611
                if (!wave->event) {
612
                    dolog ("ADC CreateEvent: %lx, poll mode will be disabled\n",
613
                           GetLastError ());
614
                }
615
            }
616

    
617
            if (wave->event) {
618
                int ret;
619

    
620
                ret = qemu_add_wait_object (wave->event, winwave_poll, wave);
621
                hw->poll_mode = (ret == 0);
622
            }
623
            else {
624
                hw->poll_mode = 0;
625
            }
626
            if (wave->paused) {
627
                mr = waveInStart (wave->hwi);
628
                if (mr != MMSYSERR_NOERROR) {
629
                    winwave_logerr (mr, "waveInStart");
630
                }
631
                wave->paused = 0;
632
            }
633
        }
634
        return 0;
635

    
636
    case VOICE_DISABLE:
637
        if (!wave->paused) {
638
            mr = waveInStop (wave->hwi);
639
            if (mr != MMSYSERR_NOERROR) {
640
                winwave_logerr (mr, "waveInStop");
641
            }
642
            else {
643
                wave->paused = 1;
644
            }
645
        }
646
        if (wave->event) {
647
            qemu_del_wait_object (wave->event, winwave_poll, wave);
648
        }
649
        return 0;
650
    }
651
    return 0;
652
}
653

    
654
static void *winwave_audio_init (void)
655
{
656
    return &conf;
657
}
658

    
659
static void winwave_audio_fini (void *opaque)
660
{
661
    (void) opaque;
662
}
663

    
664
static struct audio_option winwave_options[] = {
665
    {
666
        .name        = "DAC_HEADERS",
667
        .tag         = AUD_OPT_INT,
668
        .valp        = &conf.dac_headers,
669
        .descr       = "DAC number of headers",
670
    },
671
    {
672
        .name        = "DAC_SAMPLES",
673
        .tag         = AUD_OPT_INT,
674
        .valp        = &conf.dac_samples,
675
        .descr       = "DAC number of samples per header",
676
    },
677
    {
678
        .name        = "ADC_HEADERS",
679
        .tag         = AUD_OPT_INT,
680
        .valp        = &conf.adc_headers,
681
        .descr       = "ADC number of headers",
682
    },
683
    {
684
        .name        = "ADC_SAMPLES",
685
        .tag         = AUD_OPT_INT,
686
        .valp        = &conf.adc_samples,
687
        .descr       = "ADC number of samples per header",
688
    },
689
    { /* End of list */ }
690
};
691

    
692
static struct audio_pcm_ops winwave_pcm_ops = {
693
    .init_out = winwave_init_out,
694
    .fini_out = winwave_fini_out,
695
    .run_out  = winwave_run_out,
696
    .write    = winwave_write,
697
    .ctl_out  = winwave_ctl_out,
698
    .init_in  = winwave_init_in,
699
    .fini_in  = winwave_fini_in,
700
    .run_in   = winwave_run_in,
701
    .read     = winwave_read,
702
    .ctl_in   = winwave_ctl_in
703
};
704

    
705
struct audio_driver winwave_audio_driver = {
706
    .name           = "winwave",
707
    .descr          = "Windows Waveform Audio http://msdn.microsoft.com",
708
    .options        = winwave_options,
709
    .init           = winwave_audio_init,
710
    .fini           = winwave_audio_fini,
711
    .pcm_ops        = &winwave_pcm_ops,
712
    .can_be_default = 1,
713
    .max_voices_out = INT_MAX,
714
    .max_voices_in  = INT_MAX,
715
    .voice_size_out = sizeof (WaveVoiceOut),
716
    .voice_size_in  = sizeof (WaveVoiceIn)
717
};