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32#include "qemu/osdep.h"
33#include "qemu/module.h"
34#include "hw/qdev-properties.h"
35#include "hw/usb.h"
36#include "migration/vmstate.h"
37#include "desc.h"
38#include "audio/audio.h"
39#include "qom/object.h"
40
41static void usb_audio_reinit(USBDevice *dev, unsigned channels);
42
43#define USBAUDIO_VENDOR_NUM 0x46f4
44#define USBAUDIO_PRODUCT_NUM 0x0002
45
46#define DEV_CONFIG_VALUE 1
47
48#define USBAUDIO_MAX_CHANNELS(s) (s->multi ? 8 : 2)
49
50
51#define DST_AC_HEADER 1
52#define DST_AC_INPUT_TERMINAL 2
53#define DST_AC_OUTPUT_TERMINAL 3
54#define DST_AC_FEATURE_UNIT 6
55
56#define DST_AS_GENERAL 1
57#define DST_AS_FORMAT_TYPE 2
58
59#define DST_EP_GENERAL 1
60
61enum usb_audio_strings {
62 STRING_NULL,
63 STRING_MANUFACTURER,
64 STRING_PRODUCT,
65 STRING_SERIALNUMBER,
66 STRING_CONFIG,
67 STRING_USBAUDIO_CONTROL,
68 STRING_INPUT_TERMINAL,
69 STRING_FEATURE_UNIT,
70 STRING_OUTPUT_TERMINAL,
71 STRING_NULL_STREAM,
72 STRING_REAL_STREAM,
73};
74
75static const USBDescStrings usb_audio_stringtable = {
76 [STRING_MANUFACTURER] = "QEMU",
77 [STRING_PRODUCT] = "QEMU USB Audio",
78 [STRING_SERIALNUMBER] = "1",
79 [STRING_CONFIG] = "Audio Configuration",
80 [STRING_USBAUDIO_CONTROL] = "Audio Device",
81 [STRING_INPUT_TERMINAL] = "Audio Output Pipe",
82 [STRING_FEATURE_UNIT] = "Audio Output Volume Control",
83 [STRING_OUTPUT_TERMINAL] = "Audio Output Terminal",
84 [STRING_NULL_STREAM] = "Audio Output - Disabled",
85 [STRING_REAL_STREAM] = "Audio Output - 48 kHz Stereo",
86};
87
88
89
90
91
92
93
94
95
96enum usb_audio_altset {
97 ALTSET_OFF = 0x00,
98 ALTSET_STEREO = 0x01,
99 ALTSET_51 = 0x02,
100 ALTSET_71 = 0x03,
101};
102
103static unsigned altset_channels[] = {
104 [ALTSET_STEREO] = 2,
105 [ALTSET_51] = 6,
106 [ALTSET_71] = 8,
107};
108
109#define U16(x) ((x) & 0xff), (((x) >> 8) & 0xff)
110#define U24(x) U16(x), (((x) >> 16) & 0xff)
111#define U32(x) U24(x), (((x) >> 24) & 0xff)
112
113
114
115
116#define USBAUDIO_PACKET_SIZE_BASE 96
117#define USBAUDIO_PACKET_SIZE(channels) (USBAUDIO_PACKET_SIZE_BASE * channels)
118#define USBAUDIO_SAMPLE_RATE 48000
119#define USBAUDIO_PACKET_INTERVAL 1
120
121static const USBDescIface desc_iface[] = {
122 {
123 .bInterfaceNumber = 0,
124 .bNumEndpoints = 0,
125 .bInterfaceClass = USB_CLASS_AUDIO,
126 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
127 .bInterfaceProtocol = 0x04,
128 .iInterface = STRING_USBAUDIO_CONTROL,
129 .ndesc = 4,
130 .descs = (USBDescOther[]) {
131 {
132
133 .data = (uint8_t[]) {
134 0x09,
135 USB_DT_CS_INTERFACE,
136 DST_AC_HEADER,
137 U16(0x0100),
138 U16(0x2b),
139 0x01,
140 0x01,
141 }
142 },{
143
144 .data = (uint8_t[]) {
145 0x0c,
146 USB_DT_CS_INTERFACE,
147 DST_AC_INPUT_TERMINAL,
148 0x01,
149 U16(0x0101),
150 0x00,
151 0x02,
152 U16(0x0003),
153 0x00,
154 STRING_INPUT_TERMINAL,
155 }
156 },{
157
158 .data = (uint8_t[]) {
159 0x0d,
160 USB_DT_CS_INTERFACE,
161 DST_AC_FEATURE_UNIT,
162 0x02,
163 0x01,
164 0x02,
165 U16(0x0001),
166 U16(0x0002),
167 U16(0x0002),
168 STRING_FEATURE_UNIT,
169 }
170 },{
171
172 .data = (uint8_t[]) {
173 0x09,
174 USB_DT_CS_INTERFACE,
175 DST_AC_OUTPUT_TERMINAL,
176 0x03,
177 U16(0x0301),
178 0x00,
179 0x02,
180 STRING_OUTPUT_TERMINAL,
181 }
182 }
183 },
184 },{
185 .bInterfaceNumber = 1,
186 .bAlternateSetting = ALTSET_OFF,
187 .bNumEndpoints = 0,
188 .bInterfaceClass = USB_CLASS_AUDIO,
189 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
190 .iInterface = STRING_NULL_STREAM,
191 },{
192 .bInterfaceNumber = 1,
193 .bAlternateSetting = ALTSET_STEREO,
194 .bNumEndpoints = 1,
195 .bInterfaceClass = USB_CLASS_AUDIO,
196 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
197 .iInterface = STRING_REAL_STREAM,
198 .ndesc = 2,
199 .descs = (USBDescOther[]) {
200 {
201
202 .data = (uint8_t[]) {
203 0x07,
204 USB_DT_CS_INTERFACE,
205 DST_AS_GENERAL,
206 0x01,
207 0x00,
208 0x01, 0x00,
209 }
210 },{
211
212 .data = (uint8_t[]) {
213 0x0b,
214 USB_DT_CS_INTERFACE,
215 DST_AS_FORMAT_TYPE,
216 0x01,
217 0x02,
218 0x02,
219 0x10,
220 0x01,
221 U24(USBAUDIO_SAMPLE_RATE),
222 }
223 }
224 },
225 .eps = (USBDescEndpoint[]) {
226 {
227 .bEndpointAddress = USB_DIR_OUT | 0x01,
228 .bmAttributes = 0x0d,
229 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(2),
230 .bInterval = 1,
231 .is_audio = 1,
232
233
234 .extra = (uint8_t[]) {
235 0x07,
236 USB_DT_CS_ENDPOINT,
237 DST_EP_GENERAL,
238 0x00,
239 0x00,
240 U16(0x0000),
241 },
242 },
243 }
244 }
245};
246
247static const USBDescDevice desc_device = {
248 .bcdUSB = 0x0100,
249 .bMaxPacketSize0 = 64,
250 .bNumConfigurations = 1,
251 .confs = (USBDescConfig[]) {
252 {
253 .bNumInterfaces = 2,
254 .bConfigurationValue = DEV_CONFIG_VALUE,
255 .iConfiguration = STRING_CONFIG,
256 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
257 .bMaxPower = 0x32,
258 .nif = ARRAY_SIZE(desc_iface),
259 .ifs = desc_iface,
260 },
261 },
262};
263
264static const USBDesc desc_audio = {
265 .id = {
266 .idVendor = USBAUDIO_VENDOR_NUM,
267 .idProduct = USBAUDIO_PRODUCT_NUM,
268 .bcdDevice = 0,
269 .iManufacturer = STRING_MANUFACTURER,
270 .iProduct = STRING_PRODUCT,
271 .iSerialNumber = STRING_SERIALNUMBER,
272 },
273 .full = &desc_device,
274 .str = usb_audio_stringtable,
275};
276
277
278
279static const USBDescIface desc_iface_multi[] = {
280 {
281 .bInterfaceNumber = 0,
282 .bNumEndpoints = 0,
283 .bInterfaceClass = USB_CLASS_AUDIO,
284 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
285 .bInterfaceProtocol = 0x04,
286 .iInterface = STRING_USBAUDIO_CONTROL,
287 .ndesc = 4,
288 .descs = (USBDescOther[]) {
289 {
290
291 .data = (uint8_t[]) {
292 0x09,
293 USB_DT_CS_INTERFACE,
294 DST_AC_HEADER,
295 U16(0x0100),
296 U16(0x38),
297 0x01,
298 0x01,
299 }
300 },{
301
302 .data = (uint8_t[]) {
303 0x0c,
304 USB_DT_CS_INTERFACE,
305 DST_AC_INPUT_TERMINAL,
306 0x01,
307 U16(0x0101),
308 0x00,
309 0x08,
310 U16(0x063f),
311 0x00,
312 STRING_INPUT_TERMINAL,
313 }
314 },{
315
316 .data = (uint8_t[]) {
317 0x19,
318 USB_DT_CS_INTERFACE,
319 DST_AC_FEATURE_UNIT,
320 0x02,
321 0x01,
322 0x02,
323 U16(0x0001),
324 U16(0x0002),
325 U16(0x0002),
326 U16(0x0002),
327 U16(0x0002),
328 U16(0x0002),
329 U16(0x0002),
330 U16(0x0002),
331 U16(0x0002),
332 STRING_FEATURE_UNIT,
333 }
334 },{
335
336 .data = (uint8_t[]) {
337 0x09,
338 USB_DT_CS_INTERFACE,
339 DST_AC_OUTPUT_TERMINAL,
340 0x03,
341 U16(0x0301),
342 0x00,
343 0x02,
344 STRING_OUTPUT_TERMINAL,
345 }
346 }
347 },
348 },{
349 .bInterfaceNumber = 1,
350 .bAlternateSetting = ALTSET_OFF,
351 .bNumEndpoints = 0,
352 .bInterfaceClass = USB_CLASS_AUDIO,
353 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
354 .iInterface = STRING_NULL_STREAM,
355 },{
356 .bInterfaceNumber = 1,
357 .bAlternateSetting = ALTSET_STEREO,
358 .bNumEndpoints = 1,
359 .bInterfaceClass = USB_CLASS_AUDIO,
360 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
361 .iInterface = STRING_REAL_STREAM,
362 .ndesc = 2,
363 .descs = (USBDescOther[]) {
364 {
365
366 .data = (uint8_t[]) {
367 0x07,
368 USB_DT_CS_INTERFACE,
369 DST_AS_GENERAL,
370 0x01,
371 0x00,
372 0x01, 0x00,
373 }
374 },{
375
376 .data = (uint8_t[]) {
377 0x0b,
378 USB_DT_CS_INTERFACE,
379 DST_AS_FORMAT_TYPE,
380 0x01,
381 0x02,
382 0x02,
383 0x10,
384 0x01,
385 U24(USBAUDIO_SAMPLE_RATE),
386 }
387 }
388 },
389 .eps = (USBDescEndpoint[]) {
390 {
391 .bEndpointAddress = USB_DIR_OUT | 0x01,
392 .bmAttributes = 0x0d,
393 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(2),
394 .bInterval = 1,
395 .is_audio = 1,
396
397
398 .extra = (uint8_t[]) {
399 0x07,
400 USB_DT_CS_ENDPOINT,
401 DST_EP_GENERAL,
402 0x00,
403 0x00,
404 U16(0x0000),
405 },
406 },
407 }
408 },{
409 .bInterfaceNumber = 1,
410 .bAlternateSetting = ALTSET_51,
411 .bNumEndpoints = 1,
412 .bInterfaceClass = USB_CLASS_AUDIO,
413 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
414 .iInterface = STRING_REAL_STREAM,
415 .ndesc = 2,
416 .descs = (USBDescOther[]) {
417 {
418
419 .data = (uint8_t[]) {
420 0x07,
421 USB_DT_CS_INTERFACE,
422 DST_AS_GENERAL,
423 0x01,
424 0x00,
425 0x01, 0x00,
426 }
427 },{
428
429 .data = (uint8_t[]) {
430 0x0b,
431 USB_DT_CS_INTERFACE,
432 DST_AS_FORMAT_TYPE,
433 0x01,
434 0x06,
435 0x02,
436 0x10,
437 0x01,
438 U24(USBAUDIO_SAMPLE_RATE),
439 }
440 }
441 },
442 .eps = (USBDescEndpoint[]) {
443 {
444 .bEndpointAddress = USB_DIR_OUT | 0x01,
445 .bmAttributes = 0x0d,
446 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(6),
447 .bInterval = 1,
448 .is_audio = 1,
449
450
451 .extra = (uint8_t[]) {
452 0x07,
453 USB_DT_CS_ENDPOINT,
454 DST_EP_GENERAL,
455 0x00,
456 0x00,
457 U16(0x0000),
458 },
459 },
460 }
461 },{
462 .bInterfaceNumber = 1,
463 .bAlternateSetting = ALTSET_71,
464 .bNumEndpoints = 1,
465 .bInterfaceClass = USB_CLASS_AUDIO,
466 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
467 .iInterface = STRING_REAL_STREAM,
468 .ndesc = 2,
469 .descs = (USBDescOther[]) {
470 {
471
472 .data = (uint8_t[]) {
473 0x07,
474 USB_DT_CS_INTERFACE,
475 DST_AS_GENERAL,
476 0x01,
477 0x00,
478 0x01, 0x00,
479 }
480 },{
481
482 .data = (uint8_t[]) {
483 0x0b,
484 USB_DT_CS_INTERFACE,
485 DST_AS_FORMAT_TYPE,
486 0x01,
487 0x08,
488 0x02,
489 0x10,
490 0x01,
491 U24(USBAUDIO_SAMPLE_RATE),
492 }
493 }
494 },
495 .eps = (USBDescEndpoint[]) {
496 {
497 .bEndpointAddress = USB_DIR_OUT | 0x01,
498 .bmAttributes = 0x0d,
499 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(8),
500 .bInterval = 1,
501 .is_audio = 1,
502
503
504 .extra = (uint8_t[]) {
505 0x07,
506 USB_DT_CS_ENDPOINT,
507 DST_EP_GENERAL,
508 0x00,
509 0x00,
510 U16(0x0000),
511 },
512 },
513 }
514 }
515};
516
517static const USBDescDevice desc_device_multi = {
518 .bcdUSB = 0x0100,
519 .bMaxPacketSize0 = 64,
520 .bNumConfigurations = 1,
521 .confs = (USBDescConfig[]) {
522 {
523 .bNumInterfaces = 2,
524 .bConfigurationValue = DEV_CONFIG_VALUE,
525 .iConfiguration = STRING_CONFIG,
526 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
527 .bMaxPower = 0x32,
528 .nif = ARRAY_SIZE(desc_iface_multi),
529 .ifs = desc_iface_multi,
530 }
531 },
532};
533
534static const USBDesc desc_audio_multi = {
535 .id = {
536 .idVendor = USBAUDIO_VENDOR_NUM,
537 .idProduct = USBAUDIO_PRODUCT_NUM,
538 .bcdDevice = 0,
539 .iManufacturer = STRING_MANUFACTURER,
540 .iProduct = STRING_PRODUCT,
541 .iSerialNumber = STRING_SERIALNUMBER,
542 },
543 .full = &desc_device_multi,
544 .str = usb_audio_stringtable,
545};
546
547
548
549
550#define CR_SET_CUR 0x01
551#define CR_GET_CUR 0x81
552#define CR_SET_MIN 0x02
553#define CR_GET_MIN 0x82
554#define CR_SET_MAX 0x03
555#define CR_GET_MAX 0x83
556#define CR_SET_RES 0x04
557#define CR_GET_RES 0x84
558#define CR_SET_MEM 0x05
559#define CR_GET_MEM 0x85
560#define CR_GET_STAT 0xff
561
562
563
564
565#define MUTE_CONTROL 0x01
566#define VOLUME_CONTROL 0x02
567#define BASS_CONTROL 0x03
568#define MID_CONTROL 0x04
569#define TREBLE_CONTROL 0x05
570#define GRAPHIC_EQUALIZER_CONTROL 0x06
571#define AUTOMATIC_GAIN_CONTROL 0x07
572#define DELAY_CONTROL 0x08
573#define BASS_BOOST_CONTROL 0x09
574#define LOUDNESS_CONTROL 0x0a
575
576
577
578
579
580struct streambuf {
581 uint8_t *data;
582 size_t size;
583 uint64_t prod;
584 uint64_t cons;
585};
586
587static void streambuf_init(struct streambuf *buf, uint32_t size,
588 uint32_t channels)
589{
590 g_free(buf->data);
591 buf->size = size - (size % USBAUDIO_PACKET_SIZE(channels));
592 buf->data = g_malloc(buf->size);
593 buf->prod = 0;
594 buf->cons = 0;
595}
596
597static void streambuf_fini(struct streambuf *buf)
598{
599 g_free(buf->data);
600 buf->data = NULL;
601}
602
603static int streambuf_put(struct streambuf *buf, USBPacket *p, uint32_t channels)
604{
605 int64_t free = buf->size - (buf->prod - buf->cons);
606
607 if (free < USBAUDIO_PACKET_SIZE(channels)) {
608 return 0;
609 }
610 if (p->iov.size != USBAUDIO_PACKET_SIZE(channels)) {
611 return 0;
612 }
613
614
615 assert(buf->prod % USBAUDIO_PACKET_SIZE(channels) == 0);
616 usb_packet_copy(p, buf->data + (buf->prod % buf->size),
617 USBAUDIO_PACKET_SIZE(channels));
618 buf->prod += USBAUDIO_PACKET_SIZE(channels);
619 return USBAUDIO_PACKET_SIZE(channels);
620}
621
622static uint8_t *streambuf_get(struct streambuf *buf, size_t *len)
623{
624 int64_t used = buf->prod - buf->cons;
625 uint8_t *data;
626
627 if (used <= 0) {
628 *len = 0;
629 return NULL;
630 }
631 data = buf->data + (buf->cons % buf->size);
632 *len = MIN(buf->prod - buf->cons,
633 buf->size - (buf->cons % buf->size));
634 return data;
635}
636
637struct USBAudioState {
638
639 USBDevice dev;
640 QEMUSoundCard card;
641
642
643 struct {
644 enum usb_audio_altset altset;
645 struct audsettings as;
646 SWVoiceOut *voice;
647 Volume vol;
648 struct streambuf buf;
649 uint32_t channels;
650 } out;
651
652
653 uint32_t debug;
654 uint32_t buffer_user, buffer;
655 bool multi;
656};
657
658#define TYPE_USB_AUDIO "usb-audio"
659OBJECT_DECLARE_SIMPLE_TYPE(USBAudioState, USB_AUDIO)
660
661static void output_callback(void *opaque, int avail)
662{
663 USBAudioState *s = opaque;
664 uint8_t *data;
665
666 while (avail) {
667 size_t written, len;
668
669 data = streambuf_get(&s->out.buf, &len);
670 if (!data) {
671 return;
672 }
673
674 written = AUD_write(s->out.voice, data, len);
675 avail -= written;
676 s->out.buf.cons += written;
677
678 if (written < len) {
679 return;
680 }
681 }
682}
683
684static int usb_audio_set_output_altset(USBAudioState *s, int altset)
685{
686 switch (altset) {
687 case ALTSET_OFF:
688 AUD_set_active_out(s->out.voice, false);
689 break;
690 case ALTSET_STEREO:
691 case ALTSET_51:
692 case ALTSET_71:
693 if (s->out.channels != altset_channels[altset]) {
694 usb_audio_reinit(USB_DEVICE(s), altset_channels[altset]);
695 }
696 streambuf_init(&s->out.buf, s->buffer, s->out.channels);
697 AUD_set_active_out(s->out.voice, true);
698 break;
699 default:
700 return -1;
701 }
702
703 if (s->debug) {
704 fprintf(stderr, "usb-audio: set interface %d\n", altset);
705 }
706 s->out.altset = altset;
707 return 0;
708}
709
710
711
712
713#define ATTRIB_ID(cs, attrib, idif) \
714 (((cs) << 24) | ((attrib) << 16) | (idif))
715
716static int usb_audio_get_control(USBAudioState *s, uint8_t attrib,
717 uint16_t cscn, uint16_t idif,
718 int length, uint8_t *data)
719{
720 uint8_t cs = cscn >> 8;
721 uint8_t cn = cscn - 1;
722 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
723 int ret = USB_RET_STALL;
724
725 switch (aid) {
726 case ATTRIB_ID(MUTE_CONTROL, CR_GET_CUR, 0x0200):
727 data[0] = s->out.vol.mute;
728 ret = 1;
729 break;
730 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_CUR, 0x0200):
731 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
732 uint16_t vol = (s->out.vol.vol[cn] * 0x8800 + 127) / 255 + 0x8000;
733 data[0] = vol;
734 data[1] = vol >> 8;
735 ret = 2;
736 }
737 break;
738 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MIN, 0x0200):
739 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
740 data[0] = 0x01;
741 data[1] = 0x80;
742 ret = 2;
743 }
744 break;
745 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MAX, 0x0200):
746 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
747 data[0] = 0x00;
748 data[1] = 0x08;
749 ret = 2;
750 }
751 break;
752 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_RES, 0x0200):
753 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
754 data[0] = 0x88;
755 data[1] = 0x00;
756 ret = 2;
757 }
758 break;
759 }
760
761 return ret;
762}
763static int usb_audio_set_control(USBAudioState *s, uint8_t attrib,
764 uint16_t cscn, uint16_t idif,
765 int length, uint8_t *data)
766{
767 uint8_t cs = cscn >> 8;
768 uint8_t cn = cscn - 1;
769 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
770 int ret = USB_RET_STALL;
771 bool set_vol = false;
772
773 switch (aid) {
774 case ATTRIB_ID(MUTE_CONTROL, CR_SET_CUR, 0x0200):
775 s->out.vol.mute = data[0] & 1;
776 set_vol = true;
777 ret = 0;
778 break;
779 case ATTRIB_ID(VOLUME_CONTROL, CR_SET_CUR, 0x0200):
780 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
781 uint16_t vol = data[0] + (data[1] << 8);
782
783 if (s->debug) {
784 fprintf(stderr, "usb-audio: cn %d vol %04x\n", cn,
785 (uint16_t)vol);
786 }
787
788 vol -= 0x8000;
789 vol = (vol * 255 + 0x4400) / 0x8800;
790 if (vol > 255) {
791 vol = 255;
792 }
793
794 s->out.vol.vol[cn] = vol;
795 set_vol = true;
796 ret = 0;
797 }
798 break;
799 }
800
801 if (set_vol) {
802 if (s->debug) {
803 int i;
804 fprintf(stderr, "usb-audio: mute %d", s->out.vol.mute);
805 for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
806 fprintf(stderr, ", vol[%d] %3d", i, s->out.vol.vol[i]);
807 }
808 fprintf(stderr, "\n");
809 }
810 audio_set_volume_out(s->out.voice, &s->out.vol);
811 }
812
813 return ret;
814}
815
816static void usb_audio_handle_control(USBDevice *dev, USBPacket *p,
817 int request, int value, int index,
818 int length, uint8_t *data)
819{
820 USBAudioState *s = USB_AUDIO(dev);
821 int ret = 0;
822
823 if (s->debug) {
824 fprintf(stderr, "usb-audio: control transaction: "
825 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
826 request, value, index, length);
827 }
828
829 ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
830 if (ret >= 0) {
831 return;
832 }
833
834 switch (request) {
835 case ClassInterfaceRequest | CR_GET_CUR:
836 case ClassInterfaceRequest | CR_GET_MIN:
837 case ClassInterfaceRequest | CR_GET_MAX:
838 case ClassInterfaceRequest | CR_GET_RES:
839 ret = usb_audio_get_control(s, request & 0xff, value, index,
840 length, data);
841 if (ret < 0) {
842 if (s->debug) {
843 fprintf(stderr, "usb-audio: fail: get control\n");
844 }
845 goto fail;
846 }
847 p->actual_length = ret;
848 break;
849
850 case ClassInterfaceOutRequest | CR_SET_CUR:
851 case ClassInterfaceOutRequest | CR_SET_MIN:
852 case ClassInterfaceOutRequest | CR_SET_MAX:
853 case ClassInterfaceOutRequest | CR_SET_RES:
854 ret = usb_audio_set_control(s, request & 0xff, value, index,
855 length, data);
856 if (ret < 0) {
857 if (s->debug) {
858 fprintf(stderr, "usb-audio: fail: set control\n");
859 }
860 goto fail;
861 }
862 break;
863
864 default:
865fail:
866 if (s->debug) {
867 fprintf(stderr, "usb-audio: failed control transaction: "
868 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
869 request, value, index, length);
870 }
871 p->status = USB_RET_STALL;
872 break;
873 }
874}
875
876static void usb_audio_set_interface(USBDevice *dev, int iface,
877 int old, int value)
878{
879 USBAudioState *s = USB_AUDIO(dev);
880
881 if (iface == 1) {
882 usb_audio_set_output_altset(s, value);
883 }
884}
885
886static void usb_audio_handle_reset(USBDevice *dev)
887{
888 USBAudioState *s = USB_AUDIO(dev);
889
890 if (s->debug) {
891 fprintf(stderr, "usb-audio: reset\n");
892 }
893 usb_audio_set_output_altset(s, ALTSET_OFF);
894}
895
896static void usb_audio_handle_dataout(USBAudioState *s, USBPacket *p)
897{
898 if (s->out.altset == ALTSET_OFF) {
899 p->status = USB_RET_STALL;
900 return;
901 }
902
903 streambuf_put(&s->out.buf, p, s->out.channels);
904 if (p->actual_length < p->iov.size && s->debug > 1) {
905 fprintf(stderr, "usb-audio: output overrun (%zd bytes)\n",
906 p->iov.size - p->actual_length);
907 }
908}
909
910static void usb_audio_handle_data(USBDevice *dev, USBPacket *p)
911{
912 USBAudioState *s = (USBAudioState *) dev;
913
914 if (p->pid == USB_TOKEN_OUT && p->ep->nr == 1) {
915 usb_audio_handle_dataout(s, p);
916 return;
917 }
918
919 p->status = USB_RET_STALL;
920 if (s->debug) {
921 fprintf(stderr, "usb-audio: failed data transaction: "
922 "pid 0x%x ep 0x%x len 0x%zx\n",
923 p->pid, p->ep->nr, p->iov.size);
924 }
925}
926
927static void usb_audio_unrealize(USBDevice *dev)
928{
929 USBAudioState *s = USB_AUDIO(dev);
930
931 if (s->debug) {
932 fprintf(stderr, "usb-audio: destroy\n");
933 }
934
935 usb_audio_set_output_altset(s, ALTSET_OFF);
936 AUD_close_out(&s->card, s->out.voice);
937 AUD_remove_card(&s->card);
938
939 streambuf_fini(&s->out.buf);
940}
941
942static void usb_audio_realize(USBDevice *dev, Error **errp)
943{
944 USBAudioState *s = USB_AUDIO(dev);
945 int i;
946
947 dev->usb_desc = s->multi ? &desc_audio_multi : &desc_audio;
948
949 usb_desc_create_serial(dev);
950 usb_desc_init(dev);
951 s->dev.opaque = s;
952 AUD_register_card(TYPE_USB_AUDIO, &s->card);
953
954 s->out.altset = ALTSET_OFF;
955 s->out.vol.mute = false;
956 for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
957 s->out.vol.vol[i] = 240;
958 }
959
960 usb_audio_reinit(dev, 2);
961}
962
963static void usb_audio_reinit(USBDevice *dev, unsigned channels)
964{
965 USBAudioState *s = USB_AUDIO(dev);
966
967 s->out.channels = channels;
968 if (!s->buffer_user) {
969 s->buffer = 32 * USBAUDIO_PACKET_SIZE(s->out.channels);
970 } else {
971 s->buffer = s->buffer_user;
972 }
973
974 s->out.vol.channels = s->out.channels;
975 s->out.as.freq = USBAUDIO_SAMPLE_RATE;
976 s->out.as.nchannels = s->out.channels;
977 s->out.as.fmt = AUDIO_FORMAT_S16;
978 s->out.as.endianness = 0;
979 streambuf_init(&s->out.buf, s->buffer, s->out.channels);
980
981 s->out.voice = AUD_open_out(&s->card, s->out.voice, TYPE_USB_AUDIO,
982 s, output_callback, &s->out.as);
983 audio_set_volume_out(s->out.voice, &s->out.vol);
984 AUD_set_active_out(s->out.voice, 0);
985}
986
987static const VMStateDescription vmstate_usb_audio = {
988 .name = TYPE_USB_AUDIO,
989 .unmigratable = 1,
990};
991
992static Property usb_audio_properties[] = {
993 DEFINE_AUDIO_PROPERTIES(USBAudioState, card),
994 DEFINE_PROP_UINT32("debug", USBAudioState, debug, 0),
995 DEFINE_PROP_UINT32("buffer", USBAudioState, buffer_user, 0),
996 DEFINE_PROP_BOOL("multi", USBAudioState, multi, false),
997 DEFINE_PROP_END_OF_LIST(),
998};
999
1000static void usb_audio_class_init(ObjectClass *klass, void *data)
1001{
1002 DeviceClass *dc = DEVICE_CLASS(klass);
1003 USBDeviceClass *k = USB_DEVICE_CLASS(klass);
1004
1005 dc->vmsd = &vmstate_usb_audio;
1006 device_class_set_props(dc, usb_audio_properties);
1007 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1008 k->product_desc = "QEMU USB Audio Interface";
1009 k->realize = usb_audio_realize;
1010 k->handle_reset = usb_audio_handle_reset;
1011 k->handle_control = usb_audio_handle_control;
1012 k->handle_data = usb_audio_handle_data;
1013 k->unrealize = usb_audio_unrealize;
1014 k->set_interface = usb_audio_set_interface;
1015}
1016
1017static const TypeInfo usb_audio_info = {
1018 .name = TYPE_USB_AUDIO,
1019 .parent = TYPE_USB_DEVICE,
1020 .instance_size = sizeof(USBAudioState),
1021 .class_init = usb_audio_class_init,
1022};
1023
1024static void usb_audio_register_types(void)
1025{
1026 type_register_static(&usb_audio_info);
1027 usb_legacy_register(TYPE_USB_AUDIO, "audio", NULL);
1028}
1029
1030type_init(usb_audio_register_types)
1031
