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Merge remote-tracking branch 'remotes/elmarco/tags/podman-pull-request' into staging
[qemu/ar7.git] / hw / usb / dev-audio.c
blobae42e5a2f1d08339ddbe3cc0eb1068b87d0b718f
1 /*
2 * QEMU USB audio device
3 *
4 * written by:
5 * H. Peter Anvin <hpa@linux.intel.com>
6 * Gerd Hoffmann <kraxel@redhat.com>
7 *
8 * lousely based on usb net device code which is:
9 *
10 * Copyright (c) 2006 Thomas Sailer
11 * Copyright (c) 2008 Andrzej Zaborowski
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining a copy
14 * of this software and associated documentation files (the "Software"), to deal
15 * in the Software without restriction, including without limitation the rights
16 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
17 * copies of the Software, and to permit persons to whom the Software is
18 * furnished to do so, subject to the following conditions:
19 *
20 * The above copyright notice and this permission notice shall be included in
21 * all copies or substantial portions of the Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
28 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
29 * THE SOFTWARE.
30 */
31
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
40 #define USBAUDIO_VENDOR_NUM 0x46f4 /* CRC16() of "QEMU" */
41 #define USBAUDIO_PRODUCT_NUM 0x0002
42
43 #define DEV_CONFIG_VALUE 1 /* The one and only */
44
45 /* Descriptor subtypes for AC interfaces */
46 #define DST_AC_HEADER 1
47 #define DST_AC_INPUT_TERMINAL 2
48 #define DST_AC_OUTPUT_TERMINAL 3
49 #define DST_AC_FEATURE_UNIT 6
50 /* Descriptor subtypes for AS interfaces */
51 #define DST_AS_GENERAL 1
52 #define DST_AS_FORMAT_TYPE 2
53 /* Descriptor subtypes for endpoints */
54 #define DST_EP_GENERAL 1
55
56 enum usb_audio_strings {
57 STRING_NULL,
58 STRING_MANUFACTURER,
59 STRING_PRODUCT,
60 STRING_SERIALNUMBER,
61 STRING_CONFIG,
62 STRING_USBAUDIO_CONTROL,
63 STRING_INPUT_TERMINAL,
64 STRING_FEATURE_UNIT,
65 STRING_OUTPUT_TERMINAL,
66 STRING_NULL_STREAM,
67 STRING_REAL_STREAM,
68 };
69
70 static const USBDescStrings usb_audio_stringtable = {
71 [STRING_MANUFACTURER] = "QEMU",
72 [STRING_PRODUCT] = "QEMU USB Audio",
73 [STRING_SERIALNUMBER] = "1",
74 [STRING_CONFIG] = "Audio Configuration",
75 [STRING_USBAUDIO_CONTROL] = "Audio Device",
76 [STRING_INPUT_TERMINAL] = "Audio Output Pipe",
77 [STRING_FEATURE_UNIT] = "Audio Output Volume Control",
78 [STRING_OUTPUT_TERMINAL] = "Audio Output Terminal",
79 [STRING_NULL_STREAM] = "Audio Output - Disabled",
80 [STRING_REAL_STREAM] = "Audio Output - 48 kHz Stereo",
81 };
82
83 #define U16(x) ((x) & 0xff), (((x) >> 8) & 0xff)
84 #define U24(x) U16(x), (((x) >> 16) & 0xff)
85 #define U32(x) U24(x), (((x) >> 24) & 0xff)
86
87 /*
88 * A Basic Audio Device uses these specific values
89 */
90 #define USBAUDIO_PACKET_SIZE 192
91 #define USBAUDIO_SAMPLE_RATE 48000
92 #define USBAUDIO_PACKET_INTERVAL 1
93
94 static const USBDescIface desc_iface[] = {
95 {
96 .bInterfaceNumber = 0,
97 .bNumEndpoints = 0,
98 .bInterfaceClass = USB_CLASS_AUDIO,
99 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
100 .bInterfaceProtocol = 0x04,
101 .iInterface = STRING_USBAUDIO_CONTROL,
102 .ndesc = 4,
103 .descs = (USBDescOther[]) {
104 {
105 /* Headphone Class-Specific AC Interface Header Descriptor */
106 .data = (uint8_t[]) {
107 0x09, /* u8 bLength */
108 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
109 DST_AC_HEADER, /* u8 bDescriptorSubtype */
110 U16(0x0100), /* u16 bcdADC */
111 U16(0x2b), /* u16 wTotalLength */
112 0x01, /* u8 bInCollection */
113 0x01, /* u8 baInterfaceNr */
114 }
115 },{
116 /* Generic Stereo Input Terminal ID1 Descriptor */
117 .data = (uint8_t[]) {
118 0x0c, /* u8 bLength */
119 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
120 DST_AC_INPUT_TERMINAL, /* u8 bDescriptorSubtype */
121 0x01, /* u8 bTerminalID */
122 U16(0x0101), /* u16 wTerminalType */
123 0x00, /* u8 bAssocTerminal */
124 0x02, /* u16 bNrChannels */
125 U16(0x0003), /* u16 wChannelConfig */
126 0x00, /* u8 iChannelNames */
127 STRING_INPUT_TERMINAL, /* u8 iTerminal */
128 }
129 },{
130 /* Generic Stereo Feature Unit ID2 Descriptor */
131 .data = (uint8_t[]) {
132 0x0d, /* u8 bLength */
133 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
134 DST_AC_FEATURE_UNIT, /* u8 bDescriptorSubtype */
135 0x02, /* u8 bUnitID */
136 0x01, /* u8 bSourceID */
137 0x02, /* u8 bControlSize */
138 U16(0x0001), /* u16 bmaControls(0) */
139 U16(0x0002), /* u16 bmaControls(1) */
140 U16(0x0002), /* u16 bmaControls(2) */
141 STRING_FEATURE_UNIT, /* u8 iFeature */
142 }
143 },{
144 /* Headphone Ouptut Terminal ID3 Descriptor */
145 .data = (uint8_t[]) {
146 0x09, /* u8 bLength */
147 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
148 DST_AC_OUTPUT_TERMINAL, /* u8 bDescriptorSubtype */
149 0x03, /* u8 bUnitID */
150 U16(0x0301), /* u16 wTerminalType (SPK) */
151 0x00, /* u8 bAssocTerminal */
152 0x02, /* u8 bSourceID */
153 STRING_OUTPUT_TERMINAL, /* u8 iTerminal */
154 }
155 }
156 },
157 },{
158 .bInterfaceNumber = 1,
159 .bAlternateSetting = 0,
160 .bNumEndpoints = 0,
161 .bInterfaceClass = USB_CLASS_AUDIO,
162 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
163 .iInterface = STRING_NULL_STREAM,
164 },{
165 .bInterfaceNumber = 1,
166 .bAlternateSetting = 1,
167 .bNumEndpoints = 1,
168 .bInterfaceClass = USB_CLASS_AUDIO,
169 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
170 .iInterface = STRING_REAL_STREAM,
171 .ndesc = 2,
172 .descs = (USBDescOther[]) {
173 {
174 /* Headphone Class-specific AS General Interface Descriptor */
175 .data = (uint8_t[]) {
176 0x07, /* u8 bLength */
177 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
178 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
179 0x01, /* u8 bTerminalLink */
180 0x00, /* u8 bDelay */
181 0x01, 0x00, /* u16 wFormatTag */
182 }
183 },{
184 /* Headphone Type I Format Type Descriptor */
185 .data = (uint8_t[]) {
186 0x0b, /* u8 bLength */
187 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
188 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
189 0x01, /* u8 bFormatType */
190 0x02, /* u8 bNrChannels */
191 0x02, /* u8 bSubFrameSize */
192 0x10, /* u8 bBitResolution */
193 0x01, /* u8 bSamFreqType */
194 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
195 }
196 }
197 },
198 .eps = (USBDescEndpoint[]) {
199 {
200 .bEndpointAddress = USB_DIR_OUT | 0x01,
201 .bmAttributes = 0x0d,
202 .wMaxPacketSize = USBAUDIO_PACKET_SIZE,
203 .bInterval = 1,
204 .is_audio = 1,
205 /* Stereo Headphone Class-specific
206 AS Audio Data Endpoint Descriptor */
207 .extra = (uint8_t[]) {
208 0x07, /* u8 bLength */
209 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
210 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
211 0x00, /* u8 bmAttributes */
212 0x00, /* u8 bLockDelayUnits */
213 U16(0x0000), /* u16 wLockDelay */
214 },
215 },
216 }
217 }
218 };
219
220 static const USBDescDevice desc_device = {
221 .bcdUSB = 0x0100,
222 .bMaxPacketSize0 = 64,
223 .bNumConfigurations = 1,
224 .confs = (USBDescConfig[]) {
225 {
226 .bNumInterfaces = 2,
227 .bConfigurationValue = DEV_CONFIG_VALUE,
228 .iConfiguration = STRING_CONFIG,
229 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
230 .bMaxPower = 0x32,
231 .nif = ARRAY_SIZE(desc_iface),
232 .ifs = desc_iface,
233 },
234 },
235 };
236
237 static const USBDesc desc_audio = {
238 .id = {
239 .idVendor = USBAUDIO_VENDOR_NUM,
240 .idProduct = USBAUDIO_PRODUCT_NUM,
241 .bcdDevice = 0,
242 .iManufacturer = STRING_MANUFACTURER,
243 .iProduct = STRING_PRODUCT,
244 .iSerialNumber = STRING_SERIALNUMBER,
245 },
246 .full = &desc_device,
247 .str = usb_audio_stringtable,
248 };
249
250 /*
251 * A USB audio device supports an arbitrary number of alternate
252 * interface settings for each interface. Each corresponds to a block
253 * diagram of parameterized blocks. This can thus refer to things like
254 * number of channels, data rates, or in fact completely different
255 * block diagrams. Alternative setting 0 is always the null block diagram,
256 * which is used by a disabled device.
257 */
258 enum usb_audio_altset {
259 ALTSET_OFF = 0x00, /* No endpoint */
260 ALTSET_ON = 0x01, /* Single endpoint */
261 };
262
263 /*
264 * Class-specific control requests
265 */
266 #define CR_SET_CUR 0x01
267 #define CR_GET_CUR 0x81
268 #define CR_SET_MIN 0x02
269 #define CR_GET_MIN 0x82
270 #define CR_SET_MAX 0x03
271 #define CR_GET_MAX 0x83
272 #define CR_SET_RES 0x04
273 #define CR_GET_RES 0x84
274 #define CR_SET_MEM 0x05
275 #define CR_GET_MEM 0x85
276 #define CR_GET_STAT 0xff
277
278 /*
279 * Feature Unit Control Selectors
280 */
281 #define MUTE_CONTROL 0x01
282 #define VOLUME_CONTROL 0x02
283 #define BASS_CONTROL 0x03
284 #define MID_CONTROL 0x04
285 #define TREBLE_CONTROL 0x05
286 #define GRAPHIC_EQUALIZER_CONTROL 0x06
287 #define AUTOMATIC_GAIN_CONTROL 0x07
288 #define DELAY_CONTROL 0x08
289 #define BASS_BOOST_CONTROL 0x09
290 #define LOUDNESS_CONTROL 0x0a
291
292 /*
293 * buffering
294 */
295
296 struct streambuf {
297 uint8_t *data;
298 uint32_t size;
299 uint32_t prod;
300 uint32_t cons;
301 };
302
303 static void streambuf_init(struct streambuf *buf, uint32_t size)
304 {
305 g_free(buf->data);
306 buf->size = size - (size % USBAUDIO_PACKET_SIZE);
307 buf->data = g_malloc(buf->size);
308 buf->prod = 0;
309 buf->cons = 0;
310 }
311
312 static void streambuf_fini(struct streambuf *buf)
313 {
314 g_free(buf->data);
315 buf->data = NULL;
316 }
317
318 static int streambuf_put(struct streambuf *buf, USBPacket *p)
319 {
320 uint32_t free = buf->size - (buf->prod - buf->cons);
321
322 if (!free) {
323 return 0;
324 }
325 if (p->iov.size != USBAUDIO_PACKET_SIZE) {
326 return 0;
327 }
328 assert(free >= USBAUDIO_PACKET_SIZE);
329 usb_packet_copy(p, buf->data + (buf->prod % buf->size),
330 USBAUDIO_PACKET_SIZE);
331 buf->prod += USBAUDIO_PACKET_SIZE;
332 return USBAUDIO_PACKET_SIZE;
333 }
334
335 static uint8_t *streambuf_get(struct streambuf *buf)
336 {
337 uint32_t used = buf->prod - buf->cons;
338 uint8_t *data;
339
340 if (!used) {
341 return NULL;
342 }
343 assert(used >= USBAUDIO_PACKET_SIZE);
344 data = buf->data + (buf->cons % buf->size);
345 buf->cons += USBAUDIO_PACKET_SIZE;
346 return data;
347 }
348
349 typedef struct USBAudioState {
350 /* qemu interfaces */
351 USBDevice dev;
352 QEMUSoundCard card;
353
354 /* state */
355 struct {
356 enum usb_audio_altset altset;
357 struct audsettings as;
358 SWVoiceOut *voice;
359 bool mute;
360 uint8_t vol[2];
361 struct streambuf buf;
362 } out;
363
364 /* properties */
365 uint32_t debug;
366 uint32_t buffer;
367 } USBAudioState;
368
369 #define TYPE_USB_AUDIO "usb-audio"
370 #define USB_AUDIO(obj) OBJECT_CHECK(USBAudioState, (obj), TYPE_USB_AUDIO)
371
372 static void output_callback(void *opaque, int avail)
373 {
374 USBAudioState *s = opaque;
375 uint8_t *data;
376
377 for (;;) {
378 if (avail < USBAUDIO_PACKET_SIZE) {
379 return;
380 }
381 data = streambuf_get(&s->out.buf);
382 if (!data) {
383 return;
384 }
385 AUD_write(s->out.voice, data, USBAUDIO_PACKET_SIZE);
386 avail -= USBAUDIO_PACKET_SIZE;
387 }
388 }
389
390 static int usb_audio_set_output_altset(USBAudioState *s, int altset)
391 {
392 switch (altset) {
393 case ALTSET_OFF:
394 streambuf_init(&s->out.buf, s->buffer);
395 AUD_set_active_out(s->out.voice, false);
396 break;
397 case ALTSET_ON:
398 AUD_set_active_out(s->out.voice, true);
399 break;
400 default:
401 return -1;
402 }
403
404 if (s->debug) {
405 fprintf(stderr, "usb-audio: set interface %d\n", altset);
406 }
407 s->out.altset = altset;
408 return 0;
409 }
410
411 /*
412 * Note: we arbitrarily map the volume control range onto -inf..+8 dB
413 */
414 #define ATTRIB_ID(cs, attrib, idif) \
415 (((cs) << 24) | ((attrib) << 16) | (idif))
416
417 static int usb_audio_get_control(USBAudioState *s, uint8_t attrib,
418 uint16_t cscn, uint16_t idif,
419 int length, uint8_t *data)
420 {
421 uint8_t cs = cscn >> 8;
422 uint8_t cn = cscn - 1; /* -1 for the non-present master control */
423 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
424 int ret = USB_RET_STALL;
425
426 switch (aid) {
427 case ATTRIB_ID(MUTE_CONTROL, CR_GET_CUR, 0x0200):
428 data[0] = s->out.mute;
429 ret = 1;
430 break;
431 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_CUR, 0x0200):
432 if (cn < 2) {
433 uint16_t vol = (s->out.vol[cn] * 0x8800 + 127) / 255 + 0x8000;
434 data[0] = vol;
435 data[1] = vol >> 8;
436 ret = 2;
437 }
438 break;
439 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MIN, 0x0200):
440 if (cn < 2) {
441 data[0] = 0x01;
442 data[1] = 0x80;
443 ret = 2;
444 }
445 break;
446 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MAX, 0x0200):
447 if (cn < 2) {
448 data[0] = 0x00;
449 data[1] = 0x08;
450 ret = 2;
451 }
452 break;
453 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_RES, 0x0200):
454 if (cn < 2) {
455 data[0] = 0x88;
456 data[1] = 0x00;
457 ret = 2;
458 }
459 break;
460 }
461
462 return ret;
463 }
464 static int usb_audio_set_control(USBAudioState *s, uint8_t attrib,
465 uint16_t cscn, uint16_t idif,
466 int length, uint8_t *data)
467 {
468 uint8_t cs = cscn >> 8;
469 uint8_t cn = cscn - 1; /* -1 for the non-present master control */
470 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
471 int ret = USB_RET_STALL;
472 bool set_vol = false;
473
474 switch (aid) {
475 case ATTRIB_ID(MUTE_CONTROL, CR_SET_CUR, 0x0200):
476 s->out.mute = data[0] & 1;
477 set_vol = true;
478 ret = 0;
479 break;
480 case ATTRIB_ID(VOLUME_CONTROL, CR_SET_CUR, 0x0200):
481 if (cn < 2) {
482 uint16_t vol = data[0] + (data[1] << 8);
483
484 if (s->debug) {
485 fprintf(stderr, "usb-audio: vol %04x\n", (uint16_t)vol);
486 }
487
488 vol -= 0x8000;
489 vol = (vol * 255 + 0x4400) / 0x8800;
490 if (vol > 255) {
491 vol = 255;
492 }
493
494 s->out.vol[cn] = vol;
495 set_vol = true;
496 ret = 0;
497 }
498 break;
499 }
500
501 if (set_vol) {
502 if (s->debug) {
503 fprintf(stderr, "usb-audio: mute %d, lvol %3d, rvol %3d\n",
504 s->out.mute, s->out.vol[0], s->out.vol[1]);
505 }
506 AUD_set_volume_out(s->out.voice, s->out.mute,
507 s->out.vol[0], s->out.vol[1]);
508 }
509
510 return ret;
511 }
512
513 static void usb_audio_handle_control(USBDevice *dev, USBPacket *p,
514 int request, int value, int index,
515 int length, uint8_t *data)
516 {
517 USBAudioState *s = USB_AUDIO(dev);
518 int ret = 0;
519
520 if (s->debug) {
521 fprintf(stderr, "usb-audio: control transaction: "
522 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
523 request, value, index, length);
524 }
525
526 ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
527 if (ret >= 0) {
528 return;
529 }
530
531 switch (request) {
532 case ClassInterfaceRequest | CR_GET_CUR:
533 case ClassInterfaceRequest | CR_GET_MIN:
534 case ClassInterfaceRequest | CR_GET_MAX:
535 case ClassInterfaceRequest | CR_GET_RES:
536 ret = usb_audio_get_control(s, request & 0xff, value, index,
537 length, data);
538 if (ret < 0) {
539 if (s->debug) {
540 fprintf(stderr, "usb-audio: fail: get control\n");
541 }
542 goto fail;
543 }
544 p->actual_length = ret;
545 break;
546
547 case ClassInterfaceOutRequest | CR_SET_CUR:
548 case ClassInterfaceOutRequest | CR_SET_MIN:
549 case ClassInterfaceOutRequest | CR_SET_MAX:
550 case ClassInterfaceOutRequest | CR_SET_RES:
551 ret = usb_audio_set_control(s, request & 0xff, value, index,
552 length, data);
553 if (ret < 0) {
554 if (s->debug) {
555 fprintf(stderr, "usb-audio: fail: set control\n");
556 }
557 goto fail;
558 }
559 break;
560
561 default:
562 fail:
563 if (s->debug) {
564 fprintf(stderr, "usb-audio: failed control transaction: "
565 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
566 request, value, index, length);
567 }
568 p->status = USB_RET_STALL;
569 break;
570 }
571 }
572
573 static void usb_audio_set_interface(USBDevice *dev, int iface,
574 int old, int value)
575 {
576 USBAudioState *s = USB_AUDIO(dev);
577
578 if (iface == 1) {
579 usb_audio_set_output_altset(s, value);
580 }
581 }
582
583 static void usb_audio_handle_reset(USBDevice *dev)
584 {
585 USBAudioState *s = USB_AUDIO(dev);
586
587 if (s->debug) {
588 fprintf(stderr, "usb-audio: reset\n");
589 }
590 usb_audio_set_output_altset(s, ALTSET_OFF);
591 }
592
593 static void usb_audio_handle_dataout(USBAudioState *s, USBPacket *p)
594 {
595 if (s->out.altset == ALTSET_OFF) {
596 p->status = USB_RET_STALL;
597 return;
598 }
599
600 streambuf_put(&s->out.buf, p);
601 if (p->actual_length < p->iov.size && s->debug > 1) {
602 fprintf(stderr, "usb-audio: output overrun (%zd bytes)\n",
603 p->iov.size - p->actual_length);
604 }
605 }
606
607 static void usb_audio_handle_data(USBDevice *dev, USBPacket *p)
608 {
609 USBAudioState *s = (USBAudioState *) dev;
610
611 if (p->pid == USB_TOKEN_OUT && p->ep->nr == 1) {
612 usb_audio_handle_dataout(s, p);
613 return;
614 }
615
616 p->status = USB_RET_STALL;
617 if (s->debug) {
618 fprintf(stderr, "usb-audio: failed data transaction: "
619 "pid 0x%x ep 0x%x len 0x%zx\n",
620 p->pid, p->ep->nr, p->iov.size);
621 }
622 }
623
624 static void usb_audio_unrealize(USBDevice *dev, Error **errp)
625 {
626 USBAudioState *s = USB_AUDIO(dev);
627
628 if (s->debug) {
629 fprintf(stderr, "usb-audio: destroy\n");
630 }
631
632 usb_audio_set_output_altset(s, ALTSET_OFF);
633 AUD_close_out(&s->card, s->out.voice);
634 AUD_remove_card(&s->card);
635
636 streambuf_fini(&s->out.buf);
637 }
638
639 static void usb_audio_realize(USBDevice *dev, Error **errp)
640 {
641 USBAudioState *s = USB_AUDIO(dev);
642
643 usb_desc_create_serial(dev);
644 usb_desc_init(dev);
645 s->dev.opaque = s;
646 AUD_register_card(TYPE_USB_AUDIO, &s->card);
647
648 s->out.altset = ALTSET_OFF;
649 s->out.mute = false;
650 s->out.vol[0] = 240; /* 0 dB */
651 s->out.vol[1] = 240; /* 0 dB */
652 s->out.as.freq = USBAUDIO_SAMPLE_RATE;
653 s->out.as.nchannels = 2;
654 s->out.as.fmt = AUDIO_FORMAT_S16;
655 s->out.as.endianness = 0;
656 streambuf_init(&s->out.buf, s->buffer);
657
658 s->out.voice = AUD_open_out(&s->card, s->out.voice, TYPE_USB_AUDIO,
659 s, output_callback, &s->out.as);
660 AUD_set_volume_out(s->out.voice, s->out.mute, s->out.vol[0], s->out.vol[1]);
661 AUD_set_active_out(s->out.voice, 0);
662 }
663
664 static const VMStateDescription vmstate_usb_audio = {
665 .name = TYPE_USB_AUDIO,
666 .unmigratable = 1,
667 };
668
669 static Property usb_audio_properties[] = {
670 DEFINE_AUDIO_PROPERTIES(USBAudioState, card),
671 DEFINE_PROP_UINT32("debug", USBAudioState, debug, 0),
672 DEFINE_PROP_UINT32("buffer", USBAudioState, buffer,
673 32 * USBAUDIO_PACKET_SIZE),
674 DEFINE_PROP_END_OF_LIST(),
675 };
676
677 static void usb_audio_class_init(ObjectClass *klass, void *data)
678 {
679 DeviceClass *dc = DEVICE_CLASS(klass);
680 USBDeviceClass *k = USB_DEVICE_CLASS(klass);
681
682 dc->vmsd = &vmstate_usb_audio;
683 dc->props = usb_audio_properties;
684 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
685 k->product_desc = "QEMU USB Audio Interface";
686 k->usb_desc = &desc_audio;
687 k->realize = usb_audio_realize;
688 k->handle_reset = usb_audio_handle_reset;
689 k->handle_control = usb_audio_handle_control;
690 k->handle_data = usb_audio_handle_data;
691 k->unrealize = usb_audio_unrealize;
692 k->set_interface = usb_audio_set_interface;
693 }
694
695 static const TypeInfo usb_audio_info = {
696 .name = TYPE_USB_AUDIO,
697 .parent = TYPE_USB_DEVICE,
698 .instance_size = sizeof(USBAudioState),
699 .class_init = usb_audio_class_init,
700 };
701
702 static void usb_audio_register_types(void)
703 {
704 type_register_static(&usb_audio_info);
705 usb_legacy_register(TYPE_USB_AUDIO, "audio", NULL);
706 }
707
708 type_init(usb_audio_register_types)
AR7 emulation for QEMU