aboutsummaryrefslogtreecommitdiff
path: root/audio/winwaveaudio.c
blob: 663abb9b508adc6fbf06d11587e6addd55bf8280 (plain)
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
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
/* public domain */

#include "qemu-common.h"
#include "sysemu.h"
#include "audio.h"

#define AUDIO_CAP "winwave"
#include "audio_int.h"

#include <windows.h>
#include <mmsystem.h>

#include "audio_win_int.h"

static struct {
    int dac_headers;
    int dac_samples;
    int adc_headers;
    int adc_samples;
} conf = {
    .dac_headers = 4,
    .dac_samples = 1024,
    .adc_headers = 4,
    .adc_samples = 1024
};

typedef struct {
    HWVoiceOut hw;
    HWAVEOUT hwo;
    WAVEHDR *hdrs;
    HANDLE event;
    void *pcm_buf;
    int avail;
    int pending;
    int curhdr;
    int paused;
    CRITICAL_SECTION crit_sect;
} WaveVoiceOut;

typedef struct {
    HWVoiceIn hw;
    HWAVEIN hwi;
    WAVEHDR *hdrs;
    HANDLE event;
    void *pcm_buf;
    int curhdr;
    int paused;
    int rpos;
    int avail;
    CRITICAL_SECTION crit_sect;
} WaveVoiceIn;

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

    switch (mr) {
    case MMSYSERR_NOERROR:
        str = "Success";
        break;

    case MMSYSERR_INVALHANDLE:
        str = "Specified device handle is invalid";
        break;

    case MMSYSERR_BADDEVICEID:
        str = "Specified device id is out of range";
        break;

    case MMSYSERR_NODRIVER:
        str = "No device driver is present";
        break;

    case MMSYSERR_NOMEM:
        str = "Unable to allocate or lock memory";
        break;

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

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

    case WAVERR_STILLPLAYING:
        str = "There are still buffers in the queue";
        break;

    default:
        dolog ("Reason: Unknown (MMRESULT %#x)\n", mr);
        return;
    }

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

static void GCC_FMT_ATTR (2, 3) winwave_logerr (
    MMRESULT mr,
    const char *fmt,
    ...
    )
{
    va_list ap;

    va_start (ap, fmt);
    AUD_vlog (AUDIO_CAP, fmt, ap);
    va_end (ap);

    AUD_log (NULL, " failed\n");
    winwave_log_mmresult (mr);
}

static void winwave_anal_close_out (WaveVoiceOut *wave)
{
    MMRESULT mr;

    mr = waveOutClose (wave->hwo);
    if (mr != MMSYSERR_NOERROR) {
        winwave_logerr (mr, "waveOutClose");
    }
    wave->hwo = NULL;
}

static void CALLBACK winwave_callback_out (
    HWAVEOUT hwo,
    UINT msg,
    DWORD_PTR dwInstance,
    DWORD_PTR dwParam1,
    DWORD_PTR dwParam2
    )
{
    WaveVoiceOut *wave = (WaveVoiceOut *) dwInstance;

    switch (msg) {
    case WOM_DONE:
        {
            WAVEHDR *h = (WAVEHDR *) dwParam1;
            if (!h->dwUser) {
                h->dwUser = 1;
                EnterCriticalSection (&wave->crit_sect);
                {
                    wave->avail += conf.dac_samples;
                }
                LeaveCriticalSection (&wave->crit_sect);
                if (wave->hw.poll_mode) {
                    if (!SetEvent (wave->event)) {
                        dolog ("DAC SetEvent failed %lx\n", GetLastError ());
                    }
                }
            }
        }
        break;

    case WOM_CLOSE:
    case WOM_OPEN:
        break;

    default:
        dolog ("unknown wave out callback msg %x\n", msg);
    }
}

static int winwave_init_out (HWVoiceOut *hw, struct audsettings *as)
{
    int i;
    int err;
    MMRESULT mr;
    WAVEFORMATEX wfx;
    WaveVoiceOut *wave;

    wave = (WaveVoiceOut *) hw;

    InitializeCriticalSection (&wave->crit_sect);

    err = waveformat_from_audio_settings (&wfx, as);
    if (err) {
        goto err0;
    }

    mr = waveOutOpen (&wave->hwo, WAVE_MAPPER, &wfx,
                      (DWORD_PTR) winwave_callback_out,
                      (DWORD_PTR) wave, CALLBACK_FUNCTION);
    if (mr != MMSYSERR_NOERROR) {
        winwave_logerr (mr, "waveOutOpen");
        goto err1;
    }

    wave->hdrs = audio_calloc (AUDIO_FUNC, conf.dac_headers,
                               sizeof (*wave->hdrs));
    if (!wave->hdrs) {
        goto err2;
    }

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

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

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

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

        mr = waveOutPrepareHeader (wave->hwo, h, sizeof (*h));
        if (mr != MMSYSERR_NOERROR) {
            winwave_logerr (mr, "waveOutPrepareHeader(%d)", i);
            goto err4;
        }
    }

    return 0;

 err4:
    g_free (wave->pcm_buf);
 err3:
    g_free (wave->hdrs);
 err2:
    winwave_anal_close_out (wave);
 err1:
 err0:
    return -1;
}

static int winwave_write (SWVoiceOut *sw, void *buf, int len)
{
    return audio_pcm_sw_write (sw, buf, len);
}

static int winwave_run_out (HWVoiceOut *hw, int live)
{
    WaveVoiceOut *wave = (WaveVoiceOut *) hw;
    int decr;
    int doreset;

    EnterCriticalSection (&wave->crit_sect);
    {
        decr = audio_MIN (live, wave->avail);
        decr = audio_pcm_hw_clip_out (hw, wave->pcm_buf, decr, wave->pending);
        wave->pending += decr;
        wave->avail -= decr;
    }
    LeaveCriticalSection (&wave->crit_sect);

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

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

        h->dwUser = 0;
        mr = waveOutWrite (wave->hwo, h, sizeof (*h));
        if (mr != MMSYSERR_NOERROR) {
            winwave_logerr (mr, "waveOutWrite(%d)", wave->curhdr);
            break;
        }

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

    return decr;
}

static void winwave_poll (void *opaque)
{
    (void) opaque;
    audio_run ("winwave_poll");
}

static void winwave_fini_out (HWVoiceOut *hw)
{
    int i;
    MMRESULT mr;
    WaveVoiceOut *wave = (WaveVoiceOut *) hw;

    mr = waveOutReset (wave->hwo);
    if (mr != MMSYSERR_NOERROR) {
        winwave_logerr (mr, "waveOutReset");
    }

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

    winwave_anal_close_out (wave);

    if (wave->event) {
        qemu_del_wait_object (wave->event, winwave_poll, wave);
        if (!CloseHandle (wave->event)) {
            dolog ("DAC CloseHandle failed %lx\n", GetLastError ());
        }
        wave->event = NULL;
    }

    g_free (wave->pcm_buf);
    wave->pcm_buf = NULL;

    g_free (wave->hdrs);
    wave->hdrs = NULL;
}

static int winwave_ctl_out (HWVoiceOut *hw, int cmd, ...)
{
    MMRESULT mr;
    WaveVoiceOut *wave = (WaveVoiceOut *) hw;

    switch (cmd) {
    case VOICE_ENABLE:
        {
            va_list ap;
            int poll_mode;

            va_start (ap, cmd);
            poll_mode = va_arg (ap, int);
            va_end (ap);

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

            if (wave->event) {
                int ret;

                ret = qemu_add_wait_object (wave->event, winwave_poll, wave);
                hw->poll_mode = (ret == 0);
            }
            else {
                hw->poll_mode = 0;
            }
            if (wave->paused) {
                mr = waveOutRestart (wave->hwo);
                if (mr != MMSYSERR_NOERROR) {
                    winwave_logerr (mr, "waveOutRestart");
                }
                wave->paused = 0;
            }
        }
        return 0;

    case VOICE_DISABLE:
        if (!wave->paused) {
            mr = waveOutPause (wave->hwo);
            if (mr != MMSYSERR_NOERROR) {
                winwave_logerr (mr, "waveOutPause");
            }
            else {
                wave->paused = 1;
            }
        }
        if (wave->event) {
            qemu_del_wait_object (wave->event, winwave_poll, wave);
        }
        return 0;
    }
    return -1;
}

static void winwave_anal_close_in (WaveVoiceIn *wave)
{
    MMRESULT mr;

    mr = waveInClose (wave->hwi);
    if (mr != MMSYSERR_NOERROR) {
        winwave_logerr (mr, "waveInClose");
    }
    wave->hwi = NULL;
}

static void CALLBACK winwave_callback_in (
    HWAVEIN *hwi,
    UINT msg,
    DWORD_PTR dwInstance,
    DWORD_PTR dwParam1,
    DWORD_PTR dwParam2
    )
{
    WaveVoiceIn *wave = (WaveVoiceIn *) dwInstance;

    switch (msg) {
    case WIM_DATA:
        {
            WAVEHDR *h = (WAVEHDR *) dwParam1;
            if (!h->dwUser) {
                h->dwUser = 1;
                EnterCriticalSection (&wave->crit_sect);
                {
                    wave->avail += conf.adc_samples;
                }
                LeaveCriticalSection (&wave->crit_sect);
                if (wave->hw.poll_mode) {
                    if (!SetEvent (wave->event)) {
                        dolog ("ADC SetEvent failed %lx\n", GetLastError ());
                    }
                }
            }
        }
        break;

    case WIM_CLOSE:
    case WIM_OPEN:
        break;

    default:
        dolog ("unknown wave in callback msg %x\n", msg);
    }
}

static void winwave_add_buffers (WaveVoiceIn *wave, int samples)
{
    int doreset;

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

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

        h->dwUser = 0;
        mr = waveInAddBuffer (wave->hwi, h, sizeof (*h));
        if (mr != MMSYSERR_NOERROR) {
            winwave_logerr (mr, "waveInAddBuffer(%d)", wave->curhdr);
        }
        wave->curhdr = (wave->curhdr + 1) % conf.adc_headers;
        samples -= conf.adc_samples;
    }
}

static int winwave_init_in (HWVoiceIn *hw, struct audsettings *as)
{
    int i;
    int err;
    MMRESULT mr;
    WAVEFORMATEX wfx;
    WaveVoiceIn *wave;

    wave = (WaveVoiceIn *) hw;

    InitializeCriticalSection (&wave->crit_sect);

    err = waveformat_from_audio_settings (&wfx, as);
    if (err) {
        goto err0;
    }

    mr = waveInOpen (&wave->hwi, WAVE_MAPPER, &wfx,
                     (DWORD_PTR) winwave_callback_in,
                     (DWORD_PTR) wave, CALLBACK_FUNCTION);
    if (mr != MMSYSERR_NOERROR) {
        winwave_logerr (mr, "waveInOpen");
        goto err1;
    }

    wave->hdrs = audio_calloc (AUDIO_FUNC, conf.dac_headers,
                               sizeof (*wave->hdrs));
    if (!wave->hdrs) {
        goto err2;
    }

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

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

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

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

        mr = waveInPrepareHeader (wave->hwi, h, sizeof (*h));
        if (mr != MMSYSERR_NOERROR) {
            winwave_logerr (mr, "waveInPrepareHeader(%d)", i);
            goto err4;
        }
    }

    wave->paused = 1;
    winwave_add_buffers (wave, hw->samples);
    return 0;

 err4:
    g_free (wave->pcm_buf);
 err3:
    g_free (wave->hdrs);
 err2:
    winwave_anal_close_in (wave);
 err1:
 err0:
    return -1;
}

static void winwave_fini_in (HWVoiceIn *hw)
{
    int i;
    MMRESULT mr;
    WaveVoiceIn *wave = (WaveVoiceIn *) hw;

    mr = waveInReset (wave->hwi);
    if (mr != MMSYSERR_NOERROR) {
        winwave_logerr (mr, "waveInReset");
    }

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

    winwave_anal_close_in (wave);

    if (wave->event) {
        qemu_del_wait_object (wave->event, winwave_poll, wave);
        if (!CloseHandle (wave->event)) {
            dolog ("ADC CloseHandle failed %lx\n", GetLastError ());
        }
        wave->event = NULL;
    }

    g_free (wave->pcm_buf);
    wave->pcm_buf = NULL;

    g_free (wave->hdrs);
    wave->hdrs = NULL;
}

static int winwave_run_in (HWVoiceIn *hw)
{
    WaveVoiceIn *wave = (WaveVoiceIn *) hw;
    int live = audio_pcm_hw_get_live_in (hw);
    int dead = hw->samples - live;
    int decr, ret;

    if (!dead) {
        return 0;
    }

    EnterCriticalSection (&wave->crit_sect);
    {
        decr = audio_MIN (dead, wave->avail);
        wave->avail -= decr;
    }
    LeaveCriticalSection (&wave->crit_sect);

    ret = decr;
    while (decr) {
        int left = hw->samples - hw->wpos;
        int conv = audio_MIN (left, decr);
        hw->conv (hw->conv_buf + hw->wpos,
                  advance (wave->pcm_buf, wave->rpos << hw->info.shift),
                  conv);

        wave->rpos = (wave->rpos + conv) % hw->samples;
        hw->wpos = (hw->wpos + conv) % hw->samples;
        decr -= conv;
    }

    winwave_add_buffers (wave, ret);
    return ret;
}

static int winwave_read (SWVoiceIn *sw, void *buf, int size)
{
    return audio_pcm_sw_read (sw, buf, size);
}

static int winwave_ctl_in (HWVoiceIn *hw, int cmd, ...)
{
    MMRESULT mr;
    WaveVoiceIn *wave = (WaveVoiceIn *) hw;

    switch (cmd) {
    case VOICE_ENABLE:
        {
            va_list ap;
            int poll_mode;

            va_start (ap, cmd);
            poll_mode = va_arg (ap, int);
            va_end (ap);

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

            if (wave->event) {
                int ret;

                ret = qemu_add_wait_object (wave->event, winwave_poll, wave);
                hw->poll_mode = (ret == 0);
            }
            else {
                hw->poll_mode = 0;
            }
            if (wave->paused) {
                mr = waveInStart (wave->hwi);
                if (mr != MMSYSERR_NOERROR) {
                    winwave_logerr (mr, "waveInStart");
                }
                wave->paused = 0;
            }
        }
        return 0;

    case VOICE_DISABLE:
        if (!wave->paused) {
            mr = waveInStop (wave->hwi);
            if (mr != MMSYSERR_NOERROR) {
                winwave_logerr (mr, "waveInStop");
            }
            else {
                wave->paused = 1;
            }
        }
        if (wave->event) {
            qemu_del_wait_object (wave->event, winwave_poll, wave);
        }
        return 0;
    }
    return 0;
}

static void *winwave_audio_init (void)
{
    return &conf;
}

static void winwave_audio_fini (void *opaque)
{
    (void) opaque;
}

static struct audio_option winwave_options[] = {
    {
        .name        = "DAC_HEADERS",
        .tag         = AUD_OPT_INT,
        .valp        = &conf.dac_headers,
        .descr       = "DAC number of headers",
    },
    {
        .name        = "DAC_SAMPLES",
        .tag         = AUD_OPT_INT,
        .valp        = &conf.dac_samples,
        .descr       = "DAC number of samples per header",
    },
    {
        .name        = "ADC_HEADERS",
        .tag         = AUD_OPT_INT,
        .valp        = &conf.adc_headers,
        .descr       = "ADC number of headers",
    },
    {
        .name        = "ADC_SAMPLES",
        .tag         = AUD_OPT_INT,
        .valp        = &conf.adc_samples,
        .descr       = "ADC number of samples per header",
    },
    { /* End of list */ }
};

static struct audio_pcm_ops winwave_pcm_ops = {
    .init_out = winwave_init_out,
    .fini_out = winwave_fini_out,
    .run_out  = winwave_run_out,
    .write    = winwave_write,
    .ctl_out  = winwave_ctl_out,
    .init_in  = winwave_init_in,
    .fini_in  = winwave_fini_in,
    .run_in   = winwave_run_in,
    .read     = winwave_read,
    .ctl_in   = winwave_ctl_in
};

struct audio_driver winwave_audio_driver = {
    .name           = "winwave",
    .descr          = "Windows Waveform Audio http://msdn.microsoft.com",
    .options        = winwave_options,
    .init           = winwave_audio_init,
    .fini           = winwave_audio_fini,
    .pcm_ops        = &winwave_pcm_ops,
    .can_be_default = 1,
    .max_voices_out = INT_MAX,
    .max_voices_in  = INT_MAX,
    .voice_size_out = sizeof (WaveVoiceOut),
    .voice_size_in  = sizeof (WaveVoiceIn)
};