dsoundaudio.c@ 1

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1	/*
2	* QEMU DirectSound audio driver
3	*
4	* Copyright (c) 2005 Vassili Karpov (malc)
5	*
6	* Permission is hereby granted, free of charge, to any person obtaining a copy
7	* of this software and associated documentation files (the "Software"), to deal
8	* in the Software without restriction, including without limitation the rights
9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10	* copies of the Software, and to permit persons to whom the Software is
11	* furnished to do so, subject to the following conditions:
12	*
13	* The above copyright notice and this permission notice shall be included in
14	* all copies or substantial portions of the Software.
15	*
16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22	* THE SOFTWARE.
23	*/
24
25	/*
26	* SEAL 1.07 by Carlos 'pel' Hasan was used as documentation
27	*/
28
29	#define _WIN32_DCOM
30	#include <windows.h>
31	#include <objbase.h>
32	#include <dsound.h>
33
34	#include "Builtins.h"
35	#include "../../vl_vbox.h"
36	#include "audio.h"
37	#include <iprt/alloc.h>
38
39	#define AUDIO_CAP "dsound"
40	#include "audio_int.h"
41
42	/* #define DEBUG_DSOUND */
43
44	static struct {
45	int lock_retries;
46	int restore_retries;
47	int getstatus_retries;
48	int set_primary;
49	int bufsize_in;
50	int bufsize_out;
51	audsettings_t settings;
52	int latency_millis;
53	} conf = {
54	1,
55	1,
56	1,
57	0,
58	16384,
59	16384,
60	{
61	44100,
62	2,
63	AUD_FMT_S16
64	},
65	10
66	};
67
68	typedef struct {
69	LPDIRECTSOUND dsound;
70	LPDIRECTSOUNDCAPTURE dsound_capture;
71	LPDIRECTSOUNDBUFFER dsound_primary_buffer;
72	audsettings_t settings;
73	} dsound;
74
75	static dsound glob_dsound;
76
77	typedef struct {
78	HWVoiceOut hw;
79	LPDIRECTSOUNDBUFFER dsound_buffer;
80	DWORD old_pos;
81	int first_time;
82	#ifdef DEBUG_DSOUND
83	DWORD old_ppos;
84	DWORD played;
85	DWORD mixed;
86	#endif
87	} DSoundVoiceOut;
88
89	typedef struct {
90	HWVoiceIn hw;
91	int first_time;
92	LPDIRECTSOUNDCAPTUREBUFFER dsound_capture_buffer;
93	} DSoundVoiceIn;
94
95	static void dsound_log_hresult (HRESULT hr)
96	{
97	const char *str = "BUG";
98
99	switch (hr) {
100	case DS_OK:
101	str = "The method succeeded";
102	break;
103	#ifdef DS_NO_VIRTUALIZATION
104	case DS_NO_VIRTUALIZATION:
105	str = "The buffer was created, but another 3D algorithm was substituted";
106	break;
107	#endif
108	#ifdef DS_INCOMPLETE
109	case DS_INCOMPLETE:
110	str = "The method succeeded, but not all the optional effects were obtained";
111	break;
112	#endif
113	#ifdef DSERR_ACCESSDENIED
114	case DSERR_ACCESSDENIED:
115	str = "The request failed because access was denied";
116	break;
117	#endif
118	#ifdef DSERR_ALLOCATED
119	case DSERR_ALLOCATED:
120	str = "The request failed because resources, such as a priority level, were already in use by another caller";
121	break;
122	#endif
123	#ifdef DSERR_ALREADYINITIALIZED
124	case DSERR_ALREADYINITIALIZED:
125	str = "The object is already initialized";
126	break;
127	#endif
128	#ifdef DSERR_BADFORMAT
129	case DSERR_BADFORMAT:
130	str = "The specified wave format is not supported";
131	break;
132	#endif
133	#ifdef DSERR_BADSENDBUFFERGUID
134	case DSERR_BADSENDBUFFERGUID:
135	str = "The GUID specified in an audiopath file does not match a valid mix-in buffer";
136	break;
137	#endif
138	#ifdef DSERR_BUFFERLOST
139	case DSERR_BUFFERLOST:
140	str = "The buffer memory has been lost and must be restored";
141	break;
142	#endif
143	#ifdef DSERR_BUFFERTOOSMALL
144	case DSERR_BUFFERTOOSMALL:
145	str = "The buffer size is not great enough to enable effects processing";
146	break;
147	#endif
148	#ifdef DSERR_CONTROLUNAVAIL
149	case DSERR_CONTROLUNAVAIL:
150	str = "The buffer control (volume, pan, and so on) requested by the caller is not available. Controls must be specified when the buffer is created, using the dwFlags member of DSBUFFERDESC";
151	break;
152	#endif
153	#ifdef DSERR_DS8_REQUIRED
154	case DSERR_DS8_REQUIRED:
155	str = "A DirectSound object of class CLSID_DirectSound8 or later is required for the requested functionality. For more information, see IDirectSound8 Interface";
156	break;
157	#endif
158	#ifdef DSERR_FXUNAVAILABLE
159	case DSERR_FXUNAVAILABLE:
160	str = "The effects requested could not be found on the system, or they are in the wrong order or in the wrong location; for example, an effect expected in hardware was found in software";
161	break;
162	#endif
163	#ifdef DSERR_GENERIC
164	case DSERR_GENERIC :
165	str = "An undetermined error occurred inside the DirectSound subsystem";
166	break;
167	#endif
168	#ifdef DSERR_INVALIDCALL
169	case DSERR_INVALIDCALL:
170	str = "This function is not valid for the current state of this object";
171	break;
172	#endif
173	#ifdef DSERR_INVALIDPARAM
174	case DSERR_INVALIDPARAM:
175	str = "An invalid parameter was passed to the returning function";
176	break;
177	#endif
178	#ifdef DSERR_NOAGGREGATION
179	case DSERR_NOAGGREGATION:
180	str = "The object does not support aggregation";
181	break;
182	#endif
183	#ifdef DSERR_NODRIVER
184	case DSERR_NODRIVER:
185	str = "No sound driver is available for use, or the given GUID is not a valid DirectSound device ID";
186	break;
187	#endif
188	#ifdef DSERR_NOINTERFACE
189	case DSERR_NOINTERFACE:
190	str = "The requested COM interface is not available";
191	break;
192	#endif
193	#ifdef DSERR_OBJECTNOTFOUND
194	case DSERR_OBJECTNOTFOUND:
195	str = "The requested object was not found";
196	break;
197	#endif
198	#ifdef DSERR_OTHERAPPHASPRIO
199	case DSERR_OTHERAPPHASPRIO:
200	str = "Another application has a higher priority level, preventing this call from succeeding";
201	break;
202	#endif
203	#ifdef DSERR_OUTOFMEMORY
204	case DSERR_OUTOFMEMORY:
205	str = "The DirectSound subsystem could not allocate sufficient memory to complete the caller's request";
206	break;
207	#endif
208	#ifdef DSERR_PRIOLEVELNEEDED
209	case DSERR_PRIOLEVELNEEDED:
210	str = "A cooperative level of DSSCL_PRIORITY or higher is required";
211	break;
212	#endif
213	#ifdef DSERR_SENDLOOP
214	case DSERR_SENDLOOP:
215	str = "A circular loop of send effects was detected";
216	break;
217	#endif
218	#ifdef DSERR_UNINITIALIZED
219	case DSERR_UNINITIALIZED:
220	str = "The Initialize method has not been called or has not been called successfully before other methods were called";
221	break;
222	#endif
223	#ifdef DSERR_UNSUPPORTED
224	case DSERR_UNSUPPORTED:
225	str = "The function called is not supported at this time";
226	break;
227	#endif
228	default:
229	AUD_log (AUDIO_CAP, "Reason: Unknown (HRESULT %#lx)\n", hr);
230	return;
231	}
232
233	AUD_log (AUDIO_CAP, "Reason: %s\n", str);
234	}
235
236	static void GCC_FMT_ATTR (2, 3) dsound_logerr (
237	HRESULT hr,
238	const char *fmt,
239	...
240	)
241	{
242	va_list ap;
243
244	va_start (ap, fmt);
245	AUD_vlog (AUDIO_CAP, fmt, ap);
246	va_end (ap);
247
248	dsound_log_hresult (hr);
249	}
250
251	static void GCC_FMT_ATTR (3, 4) dsound_logerr2 (
252	HRESULT hr,
253	const char *typ,
254	const char *fmt,
255	...
256	)
257	{
258	va_list ap;
259
260	AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
261	va_start (ap, fmt);
262	AUD_vlog (AUDIO_CAP, fmt, ap);
263	va_end (ap);
264
265	dsound_log_hresult (hr);
266	}
267
268	static DWORD millis_to_bytes (struct audio_pcm_info *info, DWORD millis)
269	{
270	return (millis * info->bytes_per_second) / 1000;
271	}
272
273	#ifdef DEBUG_DSOUND
274	static void print_wave_format (WAVEFORMATEX *wfx)
275	{
276	dolog ("tag = %d\n", wfx->wFormatTag);
277	dolog ("nChannels = %d\n", wfx->nChannels);
278	dolog ("nSamplesPerSec = %ld\n", wfx->nSamplesPerSec);
279	dolog ("nAvgBytesPerSec = %ld\n", wfx->nAvgBytesPerSec);
280	dolog ("nBlockAlign = %d\n", wfx->nBlockAlign);
281	dolog ("wBitsPerSample = %d\n", wfx->wBitsPerSample);
282	dolog ("cbSize = %d\n", wfx->cbSize);
283	}
284	#endif
285
286	static int dsound_restore_out (LPDIRECTSOUNDBUFFER dsb)
287	{
288	HRESULT hr;
289	int i;
290
291	for (i = 0; i < conf.restore_retries; ++i) {
292	hr = IDirectSoundBuffer_Restore (dsb);
293
294	switch (hr) {
295	case DS_OK:
296	return 0;
297
298	case DSERR_BUFFERLOST:
299	continue;
300
301	default:
302	dsound_logerr (hr, "Could not restore playback buffer\n");
303	return -1;
304	}
305	}
306
307	dolog ("%d attempts to restore playback buffer failed\n", i);
308	return -1;
309	}
310
311	static int waveformat_from_audio_settings (WAVEFORMATEX wfx, audsettings_t as)
312	{
313	memset (wfx, 0, sizeof (*wfx));
314
315	wfx->wFormatTag = WAVE_FORMAT_PCM;
316	wfx->nChannels = as->nchannels;
317	wfx->nSamplesPerSec = as->freq;
318	wfx->nAvgBytesPerSec = as->freq << (as->nchannels == 2);
319	wfx->nBlockAlign = 1 << (as->nchannels == 2);
320	wfx->cbSize = 0;
321
322	switch (as->fmt) {
323	case AUD_FMT_S8:
324	wfx->wBitsPerSample = 8;
325	break;
326
327	case AUD_FMT_U8:
328	wfx->wBitsPerSample = 8;
329	break;
330
331	case AUD_FMT_S16:
332	wfx->wBitsPerSample = 16;
333	wfx->nAvgBytesPerSec <<= 1;
334	wfx->nBlockAlign <<= 1;
335	break;
336
337	case AUD_FMT_U16:
338	wfx->wBitsPerSample = 16;
339	wfx->nAvgBytesPerSec <<= 1;
340	wfx->nBlockAlign <<= 1;
341	break;
342
343	default:
344	dolog ("Internal logic error: Bad audio format %d\n", as->freq);
345	return -1;
346	}
347
348	return 0;
349	}
350
351	static int waveformat_to_audio_settings (WAVEFORMATEX wfx, audsettings_t as)
352	{
353	if (wfx->wFormatTag != WAVE_FORMAT_PCM) {
354	dolog ("Invalid wave format, tag is not PCM, but %d\n",
355	wfx->wFormatTag);
356	return -1;
357	}
358
359	if (!wfx->nSamplesPerSec) {
360	dolog ("Invalid wave format, frequency is zero\n");
361	return -1;
362	}
363	as->freq = wfx->nSamplesPerSec;
364
365	switch (wfx->nChannels) {
366	case 1:
367	as->nchannels = 1;
368	break;
369
370	case 2:
371	as->nchannels = 2;
372	break;
373
374	default:
375	dolog (
376	"Invalid wave format, number of channels is not 1 or 2, but %d\n",
377	wfx->nChannels
378	);
379	return -1;
380	}
381
382	switch (wfx->wBitsPerSample) {
383	case 8:
384	as->fmt = AUD_FMT_U8;
385	break;
386
387	case 16:
388	as->fmt = AUD_FMT_S16;
389	break;
390
391	default:
392	dolog ("Invalid wave format, bits per sample is not 8 or 16, but %d\n",
393	wfx->wBitsPerSample);
394	return -1;
395	}
396
397	return 0;
398	}
399
400	#include "dsound_template.h"
401	#define DSBTYPE_IN
402	#include "dsound_template.h"
403	#undef DSBTYPE_IN
404
405	static int dsound_get_status_out (LPDIRECTSOUNDBUFFER dsb, DWORD *statusp)
406	{
407	HRESULT hr;
408	int i;
409
410	for (i = 0; i < conf.getstatus_retries; ++i) {
411	hr = IDirectSoundBuffer_GetStatus (dsb, statusp);
412	if (FAILED (hr)) {
413	dsound_logerr (hr, "Could not get playback buffer status\n");
414	return -1;
415	}
416
417	if (*statusp & DSERR_BUFFERLOST) {
418	if (dsound_restore_out (dsb)) {
419	return -1;
420	}
421	continue;
422	}
423	break;
424	}
425
426	return 0;
427	}
428
429	static int dsound_get_status_in (LPDIRECTSOUNDCAPTUREBUFFER dscb,
430	DWORD *statusp)
431	{
432	HRESULT hr;
433
434	hr = IDirectSoundCaptureBuffer_GetStatus (dscb, statusp);
435	if (FAILED (hr)) {
436	dsound_logerr (hr, "Could not get capture buffer status\n");
437	return -1;
438	}
439
440	return 0;
441	}
442
443	static void dsound_write_sample (HWVoiceOut hw, uint8_t dst, int dst_len)
444	{
445	int src_len1 = dst_len;
446	int src_len2 = 0;
447	int pos = hw->rpos + dst_len;
448	st_sample_t *src1 = hw->mix_buf + hw->rpos;
449	st_sample_t *src2 = NULL;
450
451	if (pos > hw->samples) {
452	src_len1 = hw->samples - hw->rpos;
453	src2 = hw->mix_buf;
454	src_len2 = dst_len - src_len1;
455	pos = src_len2;
456	}
457
458	if (src_len1) {
459	hw->clip (dst, src1, src_len1);
460	// mixeng_sniff_and_clear (hw, src1, dst, src_len1);
461	}
462
463	if (src_len2) {
464	dst = advance (dst, src_len1 << hw->info.shift);
465	hw->clip (dst, src2, src_len2);
466	// mixeng_sniff_and_clear (hw, src2, dst, src_len2);
467	}
468
469	hw->rpos = pos % hw->samples;
470	}
471
472	static void dsound_clear_sample (HWVoiceOut *hw, LPDIRECTSOUNDBUFFER dsb)
473	{
474	int err;
475	LPVOID p1, p2;
476	DWORD blen1, blen2, len1, len2;
477
478	err = dsound_lock_out (
479	dsb,
480	&hw->info,
481	0,
482	hw->samples << hw->info.shift,
483	&p1, &p2,
484	&blen1, &blen2,
485	1
486	);
487	if (err) {
488	return;
489	}
490
491	len1 = blen1 >> hw->info.shift;
492	len2 = blen2 >> hw->info.shift;
493
494	#ifdef DEBUG_DSOUND
495	dolog ("clear %p,%ld,%ld %p,%ld,%ld\n",
496	p1, blen1, len1,
497	p2, blen2, len2);
498	#endif
499
500	if (p1 && len1) {
501	audio_pcm_info_clear_buf (&hw->info, p1, len1);
502	}
503
504	if (p2 && len2) {
505	audio_pcm_info_clear_buf (&hw->info, p2, len2);
506	}
507
508	dsound_unlock_out (dsb, p1, p2, blen1, blen2);
509	}
510
511	static void dsound_close (dsound *s)
512	{
513	HRESULT hr;
514
515	if (s->dsound_primary_buffer) {
516	hr = IDirectSoundBuffer_Release (s->dsound_primary_buffer);
517	if (FAILED (hr)) {
518	dsound_logerr (hr, "Could not release primary buffer\n");
519	}
520	s->dsound_primary_buffer = NULL;
521	}
522	}
523
524	static int dsound_open (dsound *s)
525	{
526	int err;
527	HRESULT hr;
528	WAVEFORMATEX wfx;
529	DSBUFFERDESC dsbd;
530	HWND hwnd;
531
532	hwnd = GetForegroundWindow ();
533	hr = IDirectSound_SetCooperativeLevel (
534	s->dsound,
535	hwnd,
536	DSSCL_PRIORITY
537	);
538
539	if (FAILED (hr)) {
540	dsound_logerr (hr, "Could not set cooperative level for window %p\n",
541	hwnd);
542	return -1;
543	}
544
545	if (!conf.set_primary) {
546	return 0;
547	}
548
549	err = waveformat_from_audio_settings (&wfx, &conf.settings);
550	if (err) {
551	return -1;
552	}
553
554	memset (&dsbd, 0, sizeof (dsbd));
555	dsbd.dwSize = sizeof (dsbd);
556	dsbd.dwFlags = DSBCAPS_PRIMARYBUFFER;
557	dsbd.dwBufferBytes = 0;
558	dsbd.lpwfxFormat = NULL;
559
560	hr = IDirectSound_CreateSoundBuffer (
561	s->dsound,
562	&dsbd,
563	&s->dsound_primary_buffer,
564	NULL
565	);
566	if (FAILED (hr)) {
567	dsound_logerr (hr, "Could not create primary playback buffer\n");
568	return -1;
569	}
570
571	hr = IDirectSoundBuffer_SetFormat (s->dsound_primary_buffer, &wfx);
572	if (FAILED (hr)) {
573	dsound_logerr (hr, "Could not set primary playback buffer format\n");
574	}
575
576	hr = IDirectSoundBuffer_GetFormat (
577	s->dsound_primary_buffer,
578	&wfx,
579	sizeof (wfx),
580	NULL
581	);
582	if (FAILED (hr)) {
583	dsound_logerr (hr, "Could not get primary playback buffer format\n");
584	goto fail0;
585	}
586
587	#ifdef DEBUG_DSOUND
588	dolog ("Primary\n");
589	print_wave_format (&wfx);
590	#endif
591
592	err = waveformat_to_audio_settings (&wfx, &s->settings);
593	if (err) {
594	goto fail0;
595	}
596
597	return 0;
598
599	fail0:
600	dsound_close (s);
601	return -1;
602	}
603
604	static int dsound_ctl_out (HWVoiceOut *hw, int cmd, ...)
605	{
606	HRESULT hr;
607	DWORD status;
608	DSoundVoiceOut ds = (DSoundVoiceOut ) hw;
609	LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer;
610
611	if (!dsb) {
612	dolog ("Attempt to control voice without a buffer\n");
613	return 0;
614	}
615
616	switch (cmd) {
617	case VOICE_ENABLE:
618	if (dsound_get_status_out (dsb, &status)) {
619	return -1;
620	}
621
622	if (status & DSBSTATUS_PLAYING) {
623	dolog ("warning: Voice is already playing\n");
624	return 0;
625	}
626
627	dsound_clear_sample (hw, dsb);
628
629	hr = IDirectSoundBuffer_Play (dsb, 0, 0, DSBPLAY_LOOPING);
630	if (FAILED (hr)) {
631	dsound_logerr (hr, "Could not start playing buffer\n");
632	return -1;
633	}
634	break;
635
636	case VOICE_DISABLE:
637	if (dsound_get_status_out (dsb, &status)) {
638	return -1;
639	}
640
641	if (status & DSBSTATUS_PLAYING) {
642	hr = IDirectSoundBuffer_Stop (dsb);
643	if (FAILED (hr)) {
644	dsound_logerr (hr, "Could not stop playing buffer\n");
645	return -1;
646	}
647	}
648	else {
649	dolog ("warning: Voice is not playing\n");
650	}
651	break;
652	}
653	return 0;
654	}
655
656	static int dsound_write (SWVoiceOut sw, void buf, int len)
657	{
658	return audio_pcm_sw_write (sw, buf, len);
659	}
660
661	static int dsound_run_out (HWVoiceOut *hw)
662	{
663	int err;
664	HRESULT hr;
665	DSoundVoiceOut ds = (DSoundVoiceOut ) hw;
666	LPDIRECTSOUNDBUFFER dsb = ds->dsound_buffer;
667	int live, len, hwshift;
668	DWORD blen1, blen2;
669	DWORD len1, len2;
670	DWORD decr;
671	DWORD wpos, ppos, old_pos;
672	LPVOID p1, p2;
673	int bufsize;
674
675	if (!dsb) {
676	dolog ("Attempt to run empty with playback buffer\n");
677	return 0;
678	}
679
680	hwshift = hw->info.shift;
681	bufsize = hw->samples << hwshift;
682
683	live = audio_pcm_hw_get_live_out (hw);
684
685	hr = IDirectSoundBuffer_GetCurrentPosition (
686	dsb,
687	&ppos,
688	ds->first_time ? &wpos : NULL
689	);
690	if (FAILED (hr)) {
691	dsound_logerr (hr, "Could not get playback buffer position\n");
692	return 0;
693	}
694
695	len = live << hwshift;
696
697	if (ds->first_time) {
698	if (conf.latency_millis) {
699	DWORD cur_blat;
700
701	cur_blat = audio_ring_dist (wpos, ppos, bufsize);
702	ds->first_time = 0;
703	old_pos = wpos;
704	old_pos +=
705	millis_to_bytes (&hw->info, conf.latency_millis) - cur_blat;
706	old_pos %= bufsize;
707	old_pos &= ~hw->info.align;
708	}
709	else {
710	old_pos = wpos;
711	}
712	#ifdef DEBUG_DSOUND
713	ds->played = 0;
714	ds->mixed = 0;
715	#endif
716	}
717	else {
718	if (ds->old_pos == ppos) {
719	#ifdef DEBUG_DSOUND
720	dolog ("old_pos == ppos\n");
721	#endif
722	return 0;
723	}
724
725	#ifdef DEBUG_DSOUND
726	ds->played += audio_ring_dist (ds->old_pos, ppos, bufsize);
727	#endif
728	old_pos = ds->old_pos;
729	}
730
731	if ((old_pos < ppos) && ((old_pos + len) > ppos)) {
732	len = ppos - old_pos;
733	}
734	else {
735	if ((old_pos > ppos) && ((old_pos + len) > (ppos + bufsize))) {
736	len = bufsize - old_pos + ppos;
737	}
738	}
739
740	if (audio_bug (AUDIO_FUNC, len < 0 \|\| len > bufsize)) {
741	dolog ("len=%d bufsize=%d old_pos=%ld ppos=%ld\n",
742	len, bufsize, old_pos, ppos);
743	return 0;
744	}
745
746	len &= ~hw->info.align;
747	if (!len) {
748	return 0;
749	}
750
751	#ifdef DEBUG_DSOUND
752	ds->old_ppos = ppos;
753	#endif
754	err = dsound_lock_out (
755	dsb,
756	&hw->info,
757	old_pos,
758	len,
759	&p1, &p2,
760	&blen1, &blen2,
761	0
762	);
763	if (err) {
764	return 0;
765	}
766
767	len1 = blen1 >> hwshift;
768	len2 = blen2 >> hwshift;
769	decr = len1 + len2;
770
771	if (p1 && len1) {
772	dsound_write_sample (hw, p1, len1);
773	}
774
775	if (p2 && len2) {
776	dsound_write_sample (hw, p2, len2);
777	}
778
779	dsound_unlock_out (dsb, p1, p2, blen1, blen2);
780	ds->old_pos = (old_pos + (decr << hwshift)) % bufsize;
781
782	#ifdef DEBUG_DSOUND
783	ds->mixed += decr << hwshift;
784
785	dolog ("played %lu mixed %lu diff %ld sec %f\n",
786	ds->played,
787	ds->mixed,
788	ds->mixed - ds->played,
789	abs (ds->mixed - ds->played) / (double) hw->info.bytes_per_second);
790	#endif
791	return decr;
792	}
793
794	static int dsound_ctl_in (HWVoiceIn *hw, int cmd, ...)
795	{
796	HRESULT hr;
797	DWORD status;
798	DSoundVoiceIn ds = (DSoundVoiceIn ) hw;
799	LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer;
800
801	if (!dscb) {
802	dolog ("Attempt to control capture voice without a buffer\n");
803	return -1;
804	}
805
806	switch (cmd) {
807	case VOICE_ENABLE:
808	if (dsound_get_status_in (dscb, &status)) {
809	return -1;
810	}
811
812	if (status & DSCBSTATUS_CAPTURING) {
813	dolog ("warning: Voice is already capturing\n");
814	return 0;
815	}
816
817	/* clear ?? */
818
819	hr = IDirectSoundCaptureBuffer_Start (dscb, DSCBSTART_LOOPING);
820	if (FAILED (hr)) {
821	dsound_logerr (hr, "Could not start capturing\n");
822	return -1;
823	}
824	break;
825
826	case VOICE_DISABLE:
827	if (dsound_get_status_in (dscb, &status)) {
828	return -1;
829	}
830
831	if (status & DSCBSTATUS_CAPTURING) {
832	hr = IDirectSoundCaptureBuffer_Stop (dscb);
833	if (FAILED (hr)) {
834	dsound_logerr (hr, "Could not stop capturing\n");
835	return -1;
836	}
837	}
838	else {
839	dolog ("warning: Voice is not capturing\n");
840	}
841	break;
842	}
843	return 0;
844	}
845
846	static int dsound_read (SWVoiceIn sw, void buf, int len)
847	{
848	return audio_pcm_sw_read (sw, buf, len);
849	}
850
851	static int dsound_run_in (HWVoiceIn *hw)
852	{
853	int err;
854	HRESULT hr;
855	DSoundVoiceIn ds = (DSoundVoiceIn ) hw;
856	LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer;
857	int live, len, dead;
858	DWORD blen1, blen2;
859	DWORD len1, len2;
860	DWORD decr;
861	DWORD cpos, rpos;
862	LPVOID p1, p2;
863	int hwshift;
864
865	if (!dscb) {
866	dolog ("Attempt to run without capture buffer\n");
867	return 0;
868	}
869
870	hwshift = hw->info.shift;
871
872	live = audio_pcm_hw_get_live_in (hw);
873	dead = hw->samples - live;
874	if (!dead) {
875	return 0;
876	}
877
878	hr = IDirectSoundCaptureBuffer_GetCurrentPosition (
879	dscb,
880	&cpos,
881	ds->first_time ? &rpos : NULL
882	);
883	if (FAILED (hr)) {
884	dsound_logerr (hr, "Could not get capture buffer position\n");
885	return 0;
886	}
887
888	if (ds->first_time) {
889	ds->first_time = 0;
890	if (rpos & hw->info.align) {
891	ldebug ("warning: Misaligned capture read position %ld(%d)\n",
892	rpos, hw->info.align);
893	}
894	hw->wpos = rpos >> hwshift;
895	}
896
897	if (cpos & hw->info.align) {
898	ldebug ("warning: Misaligned capture position %ld(%d)\n",
899	cpos, hw->info.align);
900	}
901	cpos >>= hwshift;
902
903	len = audio_ring_dist (cpos, hw->wpos, hw->samples);
904	if (!len) {
905	return 0;
906	}
907	len = audio_MIN (len, dead);
908
909	err = dsound_lock_in (
910	dscb,
911	&hw->info,
912	hw->wpos << hwshift,
913	len << hwshift,
914	&p1,
915	&p2,
916	&blen1,
917	&blen2,
918	0
919	);
920	if (err) {
921	return 0;
922	}
923
924	len1 = blen1 >> hwshift;
925	len2 = blen2 >> hwshift;
926	decr = len1 + len2;
927
928	if (p1 && len1) {
929	hw->conv (hw->conv_buf + hw->wpos, p1, len1, &nominal_volume);
930	}
931
932	if (p2 && len2) {
933	hw->conv (hw->conv_buf, p2, len2, &nominal_volume);
934	}
935
936	dsound_unlock_in (dscb, p1, p2, blen1, blen2);
937	hw->wpos = (hw->wpos + decr) % hw->samples;
938	return decr;
939	}
940
941	static void dsound_audio_fini (void *opaque)
942	{
943	HRESULT hr;
944	dsound *s = opaque;
945
946	if (!s->dsound) {
947	return;
948	}
949
950	hr = IDirectSound_Release (s->dsound);
951	if (FAILED (hr)) {
952	dsound_logerr (hr, "Could not release DirectSound\n");
953	}
954	s->dsound = NULL;
955
956	if (!s->dsound_capture) {
957	return;
958	}
959
960	hr = IDirectSoundCapture_Release (s->dsound_capture);
961	if (FAILED (hr)) {
962	dsound_logerr (hr, "Could not release DirectSoundCapture\n");
963	}
964	s->dsound_capture = NULL;
965	}
966
967	static void *dsound_audio_init (void)
968	{
969	int err;
970	HRESULT hr;
971	dsound *s = &glob_dsound;
972
973	hr = CoInitializeEx (NULL, COINIT_MULTITHREADED);
974	if (FAILED (hr)) {
975	dsound_logerr (hr, "Could not initialize COM\n");
976	return NULL;
977	}
978
979	hr = CoCreateInstance (
980	&CLSID_DirectSound,
981	NULL,
982	CLSCTX_ALL,
983	&IID_IDirectSound,
984	(void **) &s->dsound
985	);
986	if (FAILED (hr)) {
987	dsound_logerr (hr, "Could not create DirectSound instance\n");
988	return NULL;
989	}
990
991	hr = IDirectSound_Initialize (s->dsound, NULL);
992	if (FAILED (hr)) {
993	dsound_logerr (hr, "Could not initialize DirectSound\n");
994
995	hr = IDirectSound_Release (s->dsound);
996	if (FAILED (hr)) {
997	dsound_logerr (hr, "Could not release DirectSound\n");
998	}
999	s->dsound = NULL;
1000	return NULL;
1001	}
1002
1003	hr = CoCreateInstance (
1004	&CLSID_DirectSoundCapture,
1005	NULL,
1006	CLSCTX_ALL,
1007	&IID_IDirectSoundCapture,
1008	(void **) &s->dsound_capture
1009	);
1010	if (FAILED (hr)) {
1011	dsound_logerr (hr, "Could not create DirectSoundCapture instance\n");
1012	}
1013	else {
1014	hr = IDirectSoundCapture_Initialize (s->dsound_capture, NULL);
1015	if (FAILED (hr)) {
1016	dsound_logerr (hr, "Could not initialize DirectSoundCapture\n");
1017
1018	hr = IDirectSoundCapture_Release (s->dsound_capture);
1019	if (FAILED (hr)) {
1020	dsound_logerr (hr,
1021	"Could not release DirectSoundCapture\n");
1022	}
1023	s->dsound_capture = NULL;
1024	}
1025	}
1026
1027	err = dsound_open (s);
1028	if (err) {
1029	dsound_audio_fini (s);
1030	return NULL;
1031	}
1032
1033	return s;
1034	}
1035
1036	static struct audio_option dsound_options[] = {
1037	{"LOCK_RETRIES", AUD_OPT_INT, &conf.lock_retries,
1038	"Number of times to attempt locking the buffer", NULL, 0},
1039	{"RESTOURE_RETRIES", AUD_OPT_INT, &conf.restore_retries,
1040	"Number of times to attempt restoring the buffer", NULL, 0},
1041	{"GETSTATUS_RETRIES", AUD_OPT_INT, &conf.getstatus_retries,
1042	"Number of times to attempt getting status of the buffer", NULL, 0},
1043	{"SET_PRIMARY", AUD_OPT_BOOL, &conf.set_primary,
1044	"Set the parameters of primary buffer", NULL, 0},
1045	{"LATENCY_MILLIS", AUD_OPT_INT, &conf.latency_millis,
1046	"(undocumented)", NULL, 0},
1047	{"PRIMARY_FREQ", AUD_OPT_INT, &conf.settings.freq,
1048	"Primary buffer frequency", NULL, 0},
1049	{"PRIMARY_CHANNELS", AUD_OPT_INT, &conf.settings.nchannels,
1050	"Primary buffer number of channels (1 - mono, 2 - stereo)", NULL, 0},
1051	{"PRIMARY_FMT", AUD_OPT_FMT, &conf.settings.fmt,
1052	"Primary buffer format", NULL, 0},
1053	{"BUFSIZE_OUT", AUD_OPT_INT, &conf.bufsize_out,
1054	"(undocumented)", NULL, 0},
1055	{"BUFSIZE_IN", AUD_OPT_INT, &conf.bufsize_in,
1056	"(undocumented)", NULL, 0},
1057	{NULL, 0, NULL, NULL, NULL, 0}
1058	};
1059
1060	static struct audio_pcm_ops dsound_pcm_ops = {
1061	dsound_init_out,
1062	dsound_fini_out,
1063	dsound_run_out,
1064	dsound_write,
1065	dsound_ctl_out,
1066
1067	dsound_init_in,
1068	dsound_fini_in,
1069	dsound_run_in,
1070	dsound_read,
1071	dsound_ctl_in
1072	};
1073
1074	struct audio_driver dsound_audio_driver = {
1075	INIT_FIELD (name = ) "dsound",
1076	INIT_FIELD (descr = )
1077	"DirectSound http://wikipedia.org/wiki/DirectSound",
1078	INIT_FIELD (options = ) dsound_options,
1079	INIT_FIELD (init = ) dsound_audio_init,
1080	INIT_FIELD (fini = ) dsound_audio_fini,
1081	INIT_FIELD (pcm_ops = ) &dsound_pcm_ops,
1082	INIT_FIELD (can_be_default = ) 1,
1083	INIT_FIELD (max_voices_out = ) INT_MAX,
1084	INIT_FIELD (max_voices_in = ) 1,
1085	INIT_FIELD (voice_size_out = ) sizeof (DSoundVoiceOut),
1086	INIT_FIELD (voice_size_in = ) sizeof (DSoundVoiceIn)
1087	};

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source: vbox/trunk/src/VBox/Devices/Audio/dsoundaudio.c@ 1

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