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qcow2: Fix broken snapshot table entries
[qemu.git] / hw / usb / dev-audio.c
blobea604bbb8e4a34544a67766b4ba7e8308c62f72f
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 static void usb_audio_reinit(USBDevice *dev, unsigned channels);
41
42 #define USBAUDIO_VENDOR_NUM 0x46f4 /* CRC16() of "QEMU" */
43 #define USBAUDIO_PRODUCT_NUM 0x0002
44
45 #define DEV_CONFIG_VALUE 1 /* The one and only */
46
47 #define USBAUDIO_MAX_CHANNELS(s) (s->multi ? 8 : 2)
48
49 /* Descriptor subtypes for AC interfaces */
50 #define DST_AC_HEADER 1
51 #define DST_AC_INPUT_TERMINAL 2
52 #define DST_AC_OUTPUT_TERMINAL 3
53 #define DST_AC_FEATURE_UNIT 6
54 /* Descriptor subtypes for AS interfaces */
55 #define DST_AS_GENERAL 1
56 #define DST_AS_FORMAT_TYPE 2
57 /* Descriptor subtypes for endpoints */
58 #define DST_EP_GENERAL 1
59
60 enum usb_audio_strings {
61 STRING_NULL,
62 STRING_MANUFACTURER,
63 STRING_PRODUCT,
64 STRING_SERIALNUMBER,
65 STRING_CONFIG,
66 STRING_USBAUDIO_CONTROL,
67 STRING_INPUT_TERMINAL,
68 STRING_FEATURE_UNIT,
69 STRING_OUTPUT_TERMINAL,
70 STRING_NULL_STREAM,
71 STRING_REAL_STREAM,
72 };
73
74 static const USBDescStrings usb_audio_stringtable = {
75 [STRING_MANUFACTURER] = "QEMU",
76 [STRING_PRODUCT] = "QEMU USB Audio",
77 [STRING_SERIALNUMBER] = "1",
78 [STRING_CONFIG] = "Audio Configuration",
79 [STRING_USBAUDIO_CONTROL] = "Audio Device",
80 [STRING_INPUT_TERMINAL] = "Audio Output Pipe",
81 [STRING_FEATURE_UNIT] = "Audio Output Volume Control",
82 [STRING_OUTPUT_TERMINAL] = "Audio Output Terminal",
83 [STRING_NULL_STREAM] = "Audio Output - Disabled",
84 [STRING_REAL_STREAM] = "Audio Output - 48 kHz Stereo",
85 };
86
87 /*
88 * A USB audio device supports an arbitrary number of alternate
89 * interface settings for each interface. Each corresponds to a block
90 * diagram of parameterized blocks. This can thus refer to things like
91 * number of channels, data rates, or in fact completely different
92 * block diagrams. Alternative setting 0 is always the null block diagram,
93 * which is used by a disabled device.
94 */
95 enum usb_audio_altset {
96 ALTSET_OFF = 0x00, /* No endpoint */
97 ALTSET_STEREO = 0x01, /* Single endpoint */
98 ALTSET_51 = 0x02,
99 ALTSET_71 = 0x03,
100 };
101
102 static unsigned altset_channels[] = {
103 [ALTSET_STEREO] = 2,
104 [ALTSET_51] = 6,
105 [ALTSET_71] = 8,
106 };
107
108 #define U16(x) ((x) & 0xff), (((x) >> 8) & 0xff)
109 #define U24(x) U16(x), (((x) >> 16) & 0xff)
110 #define U32(x) U24(x), (((x) >> 24) & 0xff)
111
112 /*
113 * A Basic Audio Device uses these specific values
114 */
115 #define USBAUDIO_PACKET_SIZE_BASE 96
116 #define USBAUDIO_PACKET_SIZE(channels) (USBAUDIO_PACKET_SIZE_BASE * channels)
117 #define USBAUDIO_SAMPLE_RATE 48000
118 #define USBAUDIO_PACKET_INTERVAL 1
119
120 static const USBDescIface desc_iface[] = {
121 {
122 .bInterfaceNumber = 0,
123 .bNumEndpoints = 0,
124 .bInterfaceClass = USB_CLASS_AUDIO,
125 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
126 .bInterfaceProtocol = 0x04,
127 .iInterface = STRING_USBAUDIO_CONTROL,
128 .ndesc = 4,
129 .descs = (USBDescOther[]) {
130 {
131 /* Headphone Class-Specific AC Interface Header Descriptor */
132 .data = (uint8_t[]) {
133 0x09, /* u8 bLength */
134 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
135 DST_AC_HEADER, /* u8 bDescriptorSubtype */
136 U16(0x0100), /* u16 bcdADC */
137 U16(0x2b), /* u16 wTotalLength */
138 0x01, /* u8 bInCollection */
139 0x01, /* u8 baInterfaceNr */
140 }
141 },{
142 /* Generic Stereo Input Terminal ID1 Descriptor */
143 .data = (uint8_t[]) {
144 0x0c, /* u8 bLength */
145 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
146 DST_AC_INPUT_TERMINAL, /* u8 bDescriptorSubtype */
147 0x01, /* u8 bTerminalID */
148 U16(0x0101), /* u16 wTerminalType */
149 0x00, /* u8 bAssocTerminal */
150 0x02, /* u8 bNrChannels */
151 U16(0x0003), /* u16 wChannelConfig */
152 0x00, /* u8 iChannelNames */
153 STRING_INPUT_TERMINAL, /* u8 iTerminal */
154 }
155 },{
156 /* Generic Stereo Feature Unit ID2 Descriptor */
157 .data = (uint8_t[]) {
158 0x0d, /* u8 bLength */
159 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
160 DST_AC_FEATURE_UNIT, /* u8 bDescriptorSubtype */
161 0x02, /* u8 bUnitID */
162 0x01, /* u8 bSourceID */
163 0x02, /* u8 bControlSize */
164 U16(0x0001), /* u16 bmaControls(0) */
165 U16(0x0002), /* u16 bmaControls(1) */
166 U16(0x0002), /* u16 bmaControls(2) */
167 STRING_FEATURE_UNIT, /* u8 iFeature */
168 }
169 },{
170 /* Headphone Ouptut Terminal ID3 Descriptor */
171 .data = (uint8_t[]) {
172 0x09, /* u8 bLength */
173 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
174 DST_AC_OUTPUT_TERMINAL, /* u8 bDescriptorSubtype */
175 0x03, /* u8 bUnitID */
176 U16(0x0301), /* u16 wTerminalType (SPK) */
177 0x00, /* u8 bAssocTerminal */
178 0x02, /* u8 bSourceID */
179 STRING_OUTPUT_TERMINAL, /* u8 iTerminal */
180 }
181 }
182 },
183 },{
184 .bInterfaceNumber = 1,
185 .bAlternateSetting = ALTSET_OFF,
186 .bNumEndpoints = 0,
187 .bInterfaceClass = USB_CLASS_AUDIO,
188 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
189 .iInterface = STRING_NULL_STREAM,
190 },{
191 .bInterfaceNumber = 1,
192 .bAlternateSetting = ALTSET_STEREO,
193 .bNumEndpoints = 1,
194 .bInterfaceClass = USB_CLASS_AUDIO,
195 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
196 .iInterface = STRING_REAL_STREAM,
197 .ndesc = 2,
198 .descs = (USBDescOther[]) {
199 {
200 /* Headphone Class-specific AS General Interface Descriptor */
201 .data = (uint8_t[]) {
202 0x07, /* u8 bLength */
203 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
204 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
205 0x01, /* u8 bTerminalLink */
206 0x00, /* u8 bDelay */
207 0x01, 0x00, /* u16 wFormatTag */
208 }
209 },{
210 /* Headphone Type I Format Type Descriptor */
211 .data = (uint8_t[]) {
212 0x0b, /* u8 bLength */
213 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
214 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
215 0x01, /* u8 bFormatType */
216 0x02, /* u8 bNrChannels */
217 0x02, /* u8 bSubFrameSize */
218 0x10, /* u8 bBitResolution */
219 0x01, /* u8 bSamFreqType */
220 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
221 }
222 }
223 },
224 .eps = (USBDescEndpoint[]) {
225 {
226 .bEndpointAddress = USB_DIR_OUT | 0x01,
227 .bmAttributes = 0x0d,
228 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(2),
229 .bInterval = 1,
230 .is_audio = 1,
231 /* Stereo Headphone Class-specific
232 AS Audio Data Endpoint Descriptor */
233 .extra = (uint8_t[]) {
234 0x07, /* u8 bLength */
235 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
236 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
237 0x00, /* u8 bmAttributes */
238 0x00, /* u8 bLockDelayUnits */
239 U16(0x0000), /* u16 wLockDelay */
240 },
241 },
242 }
243 }
244 };
245
246 static const USBDescDevice desc_device = {
247 .bcdUSB = 0x0100,
248 .bMaxPacketSize0 = 64,
249 .bNumConfigurations = 1,
250 .confs = (USBDescConfig[]) {
251 {
252 .bNumInterfaces = 2,
253 .bConfigurationValue = DEV_CONFIG_VALUE,
254 .iConfiguration = STRING_CONFIG,
255 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
256 .bMaxPower = 0x32,
257 .nif = ARRAY_SIZE(desc_iface),
258 .ifs = desc_iface,
259 },
260 },
261 };
262
263 static const USBDesc desc_audio = {
264 .id = {
265 .idVendor = USBAUDIO_VENDOR_NUM,
266 .idProduct = USBAUDIO_PRODUCT_NUM,
267 .bcdDevice = 0,
268 .iManufacturer = STRING_MANUFACTURER,
269 .iProduct = STRING_PRODUCT,
270 .iSerialNumber = STRING_SERIALNUMBER,
271 },
272 .full = &desc_device,
273 .str = usb_audio_stringtable,
274 };
275
276 /* multi channel compatible desc */
277
278 static const USBDescIface desc_iface_multi[] = {
279 {
280 .bInterfaceNumber = 0,
281 .bNumEndpoints = 0,
282 .bInterfaceClass = USB_CLASS_AUDIO,
283 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
284 .bInterfaceProtocol = 0x04,
285 .iInterface = STRING_USBAUDIO_CONTROL,
286 .ndesc = 4,
287 .descs = (USBDescOther[]) {
288 {
289 /* Headphone Class-Specific AC Interface Header Descriptor */
290 .data = (uint8_t[]) {
291 0x09, /* u8 bLength */
292 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
293 DST_AC_HEADER, /* u8 bDescriptorSubtype */
294 U16(0x0100), /* u16 bcdADC */
295 U16(0x38), /* u16 wTotalLength */
296 0x01, /* u8 bInCollection */
297 0x01, /* u8 baInterfaceNr */
298 }
299 },{
300 /* Generic Stereo Input Terminal ID1 Descriptor */
301 .data = (uint8_t[]) {
302 0x0c, /* u8 bLength */
303 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
304 DST_AC_INPUT_TERMINAL, /* u8 bDescriptorSubtype */
305 0x01, /* u8 bTerminalID */
306 U16(0x0101), /* u16 wTerminalType */
307 0x00, /* u8 bAssocTerminal */
308 0x08, /* u8 bNrChannels */
309 U16(0x063f), /* u16 wChannelConfig */
310 0x00, /* u8 iChannelNames */
311 STRING_INPUT_TERMINAL, /* u8 iTerminal */
312 }
313 },{
314 /* Generic Stereo Feature Unit ID2 Descriptor */
315 .data = (uint8_t[]) {
316 0x19, /* u8 bLength */
317 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
318 DST_AC_FEATURE_UNIT, /* u8 bDescriptorSubtype */
319 0x02, /* u8 bUnitID */
320 0x01, /* u8 bSourceID */
321 0x02, /* u8 bControlSize */
322 U16(0x0001), /* u16 bmaControls(0) */
323 U16(0x0002), /* u16 bmaControls(1) */
324 U16(0x0002), /* u16 bmaControls(2) */
325 U16(0x0002), /* u16 bmaControls(3) */
326 U16(0x0002), /* u16 bmaControls(4) */
327 U16(0x0002), /* u16 bmaControls(5) */
328 U16(0x0002), /* u16 bmaControls(6) */
329 U16(0x0002), /* u16 bmaControls(7) */
330 U16(0x0002), /* u16 bmaControls(8) */
331 STRING_FEATURE_UNIT, /* u8 iFeature */
332 }
333 },{
334 /* Headphone Ouptut Terminal ID3 Descriptor */
335 .data = (uint8_t[]) {
336 0x09, /* u8 bLength */
337 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
338 DST_AC_OUTPUT_TERMINAL, /* u8 bDescriptorSubtype */
339 0x03, /* u8 bUnitID */
340 U16(0x0301), /* u16 wTerminalType (SPK) */
341 0x00, /* u8 bAssocTerminal */
342 0x02, /* u8 bSourceID */
343 STRING_OUTPUT_TERMINAL, /* u8 iTerminal */
344 }
345 }
346 },
347 },{
348 .bInterfaceNumber = 1,
349 .bAlternateSetting = ALTSET_OFF,
350 .bNumEndpoints = 0,
351 .bInterfaceClass = USB_CLASS_AUDIO,
352 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
353 .iInterface = STRING_NULL_STREAM,
354 },{
355 .bInterfaceNumber = 1,
356 .bAlternateSetting = ALTSET_STEREO,
357 .bNumEndpoints = 1,
358 .bInterfaceClass = USB_CLASS_AUDIO,
359 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
360 .iInterface = STRING_REAL_STREAM,
361 .ndesc = 2,
362 .descs = (USBDescOther[]) {
363 {
364 /* Headphone Class-specific AS General Interface Descriptor */
365 .data = (uint8_t[]) {
366 0x07, /* u8 bLength */
367 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
368 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
369 0x01, /* u8 bTerminalLink */
370 0x00, /* u8 bDelay */
371 0x01, 0x00, /* u16 wFormatTag */
372 }
373 },{
374 /* Headphone Type I Format Type Descriptor */
375 .data = (uint8_t[]) {
376 0x0b, /* u8 bLength */
377 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
378 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
379 0x01, /* u8 bFormatType */
380 0x02, /* u8 bNrChannels */
381 0x02, /* u8 bSubFrameSize */
382 0x10, /* u8 bBitResolution */
383 0x01, /* u8 bSamFreqType */
384 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
385 }
386 }
387 },
388 .eps = (USBDescEndpoint[]) {
389 {
390 .bEndpointAddress = USB_DIR_OUT | 0x01,
391 .bmAttributes = 0x0d,
392 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(2),
393 .bInterval = 1,
394 .is_audio = 1,
395 /* Stereo Headphone Class-specific
396 AS Audio Data Endpoint Descriptor */
397 .extra = (uint8_t[]) {
398 0x07, /* u8 bLength */
399 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
400 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
401 0x00, /* u8 bmAttributes */
402 0x00, /* u8 bLockDelayUnits */
403 U16(0x0000), /* u16 wLockDelay */
404 },
405 },
406 }
407 },{
408 .bInterfaceNumber = 1,
409 .bAlternateSetting = ALTSET_51,
410 .bNumEndpoints = 1,
411 .bInterfaceClass = USB_CLASS_AUDIO,
412 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
413 .iInterface = STRING_REAL_STREAM,
414 .ndesc = 2,
415 .descs = (USBDescOther[]) {
416 {
417 /* Headphone Class-specific AS General Interface Descriptor */
418 .data = (uint8_t[]) {
419 0x07, /* u8 bLength */
420 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
421 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
422 0x01, /* u8 bTerminalLink */
423 0x00, /* u8 bDelay */
424 0x01, 0x00, /* u16 wFormatTag */
425 }
426 },{
427 /* Headphone Type I Format Type Descriptor */
428 .data = (uint8_t[]) {
429 0x0b, /* u8 bLength */
430 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
431 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
432 0x01, /* u8 bFormatType */
433 0x06, /* u8 bNrChannels */
434 0x02, /* u8 bSubFrameSize */
435 0x10, /* u8 bBitResolution */
436 0x01, /* u8 bSamFreqType */
437 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
438 }
439 }
440 },
441 .eps = (USBDescEndpoint[]) {
442 {
443 .bEndpointAddress = USB_DIR_OUT | 0x01,
444 .bmAttributes = 0x0d,
445 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(6),
446 .bInterval = 1,
447 .is_audio = 1,
448 /* Stereo Headphone Class-specific
449 AS Audio Data Endpoint Descriptor */
450 .extra = (uint8_t[]) {
451 0x07, /* u8 bLength */
452 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
453 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
454 0x00, /* u8 bmAttributes */
455 0x00, /* u8 bLockDelayUnits */
456 U16(0x0000), /* u16 wLockDelay */
457 },
458 },
459 }
460 },{
461 .bInterfaceNumber = 1,
462 .bAlternateSetting = ALTSET_71,
463 .bNumEndpoints = 1,
464 .bInterfaceClass = USB_CLASS_AUDIO,
465 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
466 .iInterface = STRING_REAL_STREAM,
467 .ndesc = 2,
468 .descs = (USBDescOther[]) {
469 {
470 /* Headphone Class-specific AS General Interface Descriptor */
471 .data = (uint8_t[]) {
472 0x07, /* u8 bLength */
473 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
474 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
475 0x01, /* u8 bTerminalLink */
476 0x00, /* u8 bDelay */
477 0x01, 0x00, /* u16 wFormatTag */
478 }
479 },{
480 /* Headphone Type I Format Type Descriptor */
481 .data = (uint8_t[]) {
482 0x0b, /* u8 bLength */
483 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
484 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
485 0x01, /* u8 bFormatType */
486 0x08, /* u8 bNrChannels */
487 0x02, /* u8 bSubFrameSize */
488 0x10, /* u8 bBitResolution */
489 0x01, /* u8 bSamFreqType */
490 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
491 }
492 }
493 },
494 .eps = (USBDescEndpoint[]) {
495 {
496 .bEndpointAddress = USB_DIR_OUT | 0x01,
497 .bmAttributes = 0x0d,
498 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(8),
499 .bInterval = 1,
500 .is_audio = 1,
501 /* Stereo Headphone Class-specific
502 AS Audio Data Endpoint Descriptor */
503 .extra = (uint8_t[]) {
504 0x07, /* u8 bLength */
505 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
506 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
507 0x00, /* u8 bmAttributes */
508 0x00, /* u8 bLockDelayUnits */
509 U16(0x0000), /* u16 wLockDelay */
510 },
511 },
512 }
513 }
514 };
515
516 static const USBDescDevice desc_device_multi = {
517 .bcdUSB = 0x0100,
518 .bMaxPacketSize0 = 64,
519 .bNumConfigurations = 1,
520 .confs = (USBDescConfig[]) {
521 {
522 .bNumInterfaces = 2,
523 .bConfigurationValue = DEV_CONFIG_VALUE,
524 .iConfiguration = STRING_CONFIG,
525 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
526 .bMaxPower = 0x32,
527 .nif = ARRAY_SIZE(desc_iface_multi),
528 .ifs = desc_iface_multi,
529 }
530 },
531 };
532
533 static const USBDesc desc_audio_multi = {
534 .id = {
535 .idVendor = USBAUDIO_VENDOR_NUM,
536 .idProduct = USBAUDIO_PRODUCT_NUM,
537 .bcdDevice = 0,
538 .iManufacturer = STRING_MANUFACTURER,
539 .iProduct = STRING_PRODUCT,
540 .iSerialNumber = STRING_SERIALNUMBER,
541 },
542 .full = &desc_device_multi,
543 .str = usb_audio_stringtable,
544 };
545
546 /*
547 * Class-specific control requests
548 */
549 #define CR_SET_CUR 0x01
550 #define CR_GET_CUR 0x81
551 #define CR_SET_MIN 0x02
552 #define CR_GET_MIN 0x82
553 #define CR_SET_MAX 0x03
554 #define CR_GET_MAX 0x83
555 #define CR_SET_RES 0x04
556 #define CR_GET_RES 0x84
557 #define CR_SET_MEM 0x05
558 #define CR_GET_MEM 0x85
559 #define CR_GET_STAT 0xff
560
561 /*
562 * Feature Unit Control Selectors
563 */
564 #define MUTE_CONTROL 0x01
565 #define VOLUME_CONTROL 0x02
566 #define BASS_CONTROL 0x03
567 #define MID_CONTROL 0x04
568 #define TREBLE_CONTROL 0x05
569 #define GRAPHIC_EQUALIZER_CONTROL 0x06
570 #define AUTOMATIC_GAIN_CONTROL 0x07
571 #define DELAY_CONTROL 0x08
572 #define BASS_BOOST_CONTROL 0x09
573 #define LOUDNESS_CONTROL 0x0a
574
575 /*
576 * buffering
577 */
578
579 struct streambuf {
580 uint8_t *data;
581 size_t size;
582 uint64_t prod;
583 uint64_t cons;
584 };
585
586 static void streambuf_init(struct streambuf *buf, uint32_t size,
587 uint32_t channels)
588 {
589 g_free(buf->data);
590 buf->size = size - (size % USBAUDIO_PACKET_SIZE(channels));
591 buf->data = g_malloc(buf->size);
592 buf->prod = 0;
593 buf->cons = 0;
594 }
595
596 static void streambuf_fini(struct streambuf *buf)
597 {
598 g_free(buf->data);
599 buf->data = NULL;
600 }
601
602 static int streambuf_put(struct streambuf *buf, USBPacket *p, uint32_t channels)
603 {
604 int64_t free = buf->size - (buf->prod - buf->cons);
605
606 if (free < USBAUDIO_PACKET_SIZE(channels)) {
607 return 0;
608 }
609 if (p->iov.size != USBAUDIO_PACKET_SIZE(channels)) {
610 return 0;
611 }
612
613 /* can happen if prod overflows */
614 assert(buf->prod % USBAUDIO_PACKET_SIZE(channels) == 0);
615 usb_packet_copy(p, buf->data + (buf->prod % buf->size),
616 USBAUDIO_PACKET_SIZE(channels));
617 buf->prod += USBAUDIO_PACKET_SIZE(channels);
618 return USBAUDIO_PACKET_SIZE(channels);
619 }
620
621 static uint8_t *streambuf_get(struct streambuf *buf, size_t *len)
622 {
623 int64_t used = buf->prod - buf->cons;
624 uint8_t *data;
625
626 if (used <= 0) {
627 *len = 0;
628 return NULL;
629 }
630 data = buf->data + (buf->cons % buf->size);
631 *len = MIN(buf->prod - buf->cons,
632 buf->size - (buf->cons % buf->size));
633 return data;
634 }
635
636 typedef struct USBAudioState {
637 /* qemu interfaces */
638 USBDevice dev;
639 QEMUSoundCard card;
640
641 /* state */
642 struct {
643 enum usb_audio_altset altset;
644 struct audsettings as;
645 SWVoiceOut *voice;
646 Volume vol;
647 struct streambuf buf;
648 uint32_t channels;
649 } out;
650
651 /* properties */
652 uint32_t debug;
653 uint32_t buffer_user, buffer;
654 bool multi;
655 } USBAudioState;
656
657 #define TYPE_USB_AUDIO "usb-audio"
658 #define USB_AUDIO(obj) OBJECT_CHECK(USBAudioState, (obj), TYPE_USB_AUDIO)
659
660 static void output_callback(void *opaque, int avail)
661 {
662 USBAudioState *s = opaque;
663 uint8_t *data;
664
665 while (avail) {
666 size_t written, len;
667
668 data = streambuf_get(&s->out.buf, &len);
669 if (!data) {
670 return;
671 }
672
673 written = AUD_write(s->out.voice, data, len);
674 avail -= written;
675 s->out.buf.cons += written;
676
677 if (written < len) {
678 return;
679 }
680 }
681 }
682
683 static int usb_audio_set_output_altset(USBAudioState *s, int altset)
684 {
685 switch (altset) {
686 case ALTSET_OFF:
687 AUD_set_active_out(s->out.voice, false);
688 break;
689 case ALTSET_STEREO:
690 case ALTSET_51:
691 case ALTSET_71:
692 if (s->out.channels != altset_channels[altset]) {
693 usb_audio_reinit(USB_DEVICE(s), altset_channels[altset]);
694 }
695 streambuf_init(&s->out.buf, s->buffer, s->out.channels);
696 AUD_set_active_out(s->out.voice, true);
697 break;
698 default:
699 return -1;
700 }
701
702 if (s->debug) {
703 fprintf(stderr, "usb-audio: set interface %d\n", altset);
704 }
705 s->out.altset = altset;
706 return 0;
707 }
708
709 /*
710 * Note: we arbitrarily map the volume control range onto -inf..+8 dB
711 */
712 #define ATTRIB_ID(cs, attrib, idif) \
713 (((cs) << 24) | ((attrib) << 16) | (idif))
714
715 static int usb_audio_get_control(USBAudioState *s, uint8_t attrib,
716 uint16_t cscn, uint16_t idif,
717 int length, uint8_t *data)
718 {
719 uint8_t cs = cscn >> 8;
720 uint8_t cn = cscn - 1; /* -1 for the non-present master control */
721 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
722 int ret = USB_RET_STALL;
723
724 switch (aid) {
725 case ATTRIB_ID(MUTE_CONTROL, CR_GET_CUR, 0x0200):
726 data[0] = s->out.vol.mute;
727 ret = 1;
728 break;
729 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_CUR, 0x0200):
730 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
731 uint16_t vol = (s->out.vol.vol[cn] * 0x8800 + 127) / 255 + 0x8000;
732 data[0] = vol;
733 data[1] = vol >> 8;
734 ret = 2;
735 }
736 break;
737 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MIN, 0x0200):
738 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
739 data[0] = 0x01;
740 data[1] = 0x80;
741 ret = 2;
742 }
743 break;
744 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MAX, 0x0200):
745 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
746 data[0] = 0x00;
747 data[1] = 0x08;
748 ret = 2;
749 }
750 break;
751 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_RES, 0x0200):
752 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
753 data[0] = 0x88;
754 data[1] = 0x00;
755 ret = 2;
756 }
757 break;
758 }
759
760 return ret;
761 }
762 static int usb_audio_set_control(USBAudioState *s, uint8_t attrib,
763 uint16_t cscn, uint16_t idif,
764 int length, uint8_t *data)
765 {
766 uint8_t cs = cscn >> 8;
767 uint8_t cn = cscn - 1; /* -1 for the non-present master control */
768 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
769 int ret = USB_RET_STALL;
770 bool set_vol = false;
771
772 switch (aid) {
773 case ATTRIB_ID(MUTE_CONTROL, CR_SET_CUR, 0x0200):
774 s->out.vol.mute = data[0] & 1;
775 set_vol = true;
776 ret = 0;
777 break;
778 case ATTRIB_ID(VOLUME_CONTROL, CR_SET_CUR, 0x0200):
779 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
780 uint16_t vol = data[0] + (data[1] << 8);
781
782 if (s->debug) {
783 fprintf(stderr, "usb-audio: cn %d vol %04x\n", cn,
784 (uint16_t)vol);
785 }
786
787 vol -= 0x8000;
788 vol = (vol * 255 + 0x4400) / 0x8800;
789 if (vol > 255) {
790 vol = 255;
791 }
792
793 s->out.vol.vol[cn] = vol;
794 set_vol = true;
795 ret = 0;
796 }
797 break;
798 }
799
800 if (set_vol) {
801 if (s->debug) {
802 int i;
803 fprintf(stderr, "usb-audio: mute %d", s->out.vol.mute);
804 for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
805 fprintf(stderr, ", vol[%d] %3d", i, s->out.vol.vol[i]);
806 }
807 fprintf(stderr, "\n");
808 }
809 audio_set_volume_out(s->out.voice, &s->out.vol);
810 }
811
812 return ret;
813 }
814
815 static void usb_audio_handle_control(USBDevice *dev, USBPacket *p,
816 int request, int value, int index,
817 int length, uint8_t *data)
818 {
819 USBAudioState *s = USB_AUDIO(dev);
820 int ret = 0;
821
822 if (s->debug) {
823 fprintf(stderr, "usb-audio: control transaction: "
824 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
825 request, value, index, length);
826 }
827
828 ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
829 if (ret >= 0) {
830 return;
831 }
832
833 switch (request) {
834 case ClassInterfaceRequest | CR_GET_CUR:
835 case ClassInterfaceRequest | CR_GET_MIN:
836 case ClassInterfaceRequest | CR_GET_MAX:
837 case ClassInterfaceRequest | CR_GET_RES:
838 ret = usb_audio_get_control(s, request & 0xff, value, index,
839 length, data);
840 if (ret < 0) {
841 if (s->debug) {
842 fprintf(stderr, "usb-audio: fail: get control\n");
843 }
844 goto fail;
845 }
846 p->actual_length = ret;
847 break;
848
849 case ClassInterfaceOutRequest | CR_SET_CUR:
850 case ClassInterfaceOutRequest | CR_SET_MIN:
851 case ClassInterfaceOutRequest | CR_SET_MAX:
852 case ClassInterfaceOutRequest | CR_SET_RES:
853 ret = usb_audio_set_control(s, request & 0xff, value, index,
854 length, data);
855 if (ret < 0) {
856 if (s->debug) {
857 fprintf(stderr, "usb-audio: fail: set control\n");
858 }
859 goto fail;
860 }
861 break;
862
863 default:
864 fail:
865 if (s->debug) {
866 fprintf(stderr, "usb-audio: failed control transaction: "
867 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
868 request, value, index, length);
869 }
870 p->status = USB_RET_STALL;
871 break;
872 }
873 }
874
875 static void usb_audio_set_interface(USBDevice *dev, int iface,
876 int old, int value)
877 {
878 USBAudioState *s = USB_AUDIO(dev);
879
880 if (iface == 1) {
881 usb_audio_set_output_altset(s, value);
882 }
883 }
884
885 static void usb_audio_handle_reset(USBDevice *dev)
886 {
887 USBAudioState *s = USB_AUDIO(dev);
888
889 if (s->debug) {
890 fprintf(stderr, "usb-audio: reset\n");
891 }
892 usb_audio_set_output_altset(s, ALTSET_OFF);
893 }
894
895 static void usb_audio_handle_dataout(USBAudioState *s, USBPacket *p)
896 {
897 if (s->out.altset == ALTSET_OFF) {
898 p->status = USB_RET_STALL;
899 return;
900 }
901
902 streambuf_put(&s->out.buf, p, s->out.channels);
903 if (p->actual_length < p->iov.size && s->debug > 1) {
904 fprintf(stderr, "usb-audio: output overrun (%zd bytes)\n",
905 p->iov.size - p->actual_length);
906 }
907 }
908
909 static void usb_audio_handle_data(USBDevice *dev, USBPacket *p)
910 {
911 USBAudioState *s = (USBAudioState *) dev;
912
913 if (p->pid == USB_TOKEN_OUT && p->ep->nr == 1) {
914 usb_audio_handle_dataout(s, p);
915 return;
916 }
917
918 p->status = USB_RET_STALL;
919 if (s->debug) {
920 fprintf(stderr, "usb-audio: failed data transaction: "
921 "pid 0x%x ep 0x%x len 0x%zx\n",
922 p->pid, p->ep->nr, p->iov.size);
923 }
924 }
925
926 static void usb_audio_unrealize(USBDevice *dev, Error **errp)
927 {
928 USBAudioState *s = USB_AUDIO(dev);
929
930 if (s->debug) {
931 fprintf(stderr, "usb-audio: destroy\n");
932 }
933
934 usb_audio_set_output_altset(s, ALTSET_OFF);
935 AUD_close_out(&s->card, s->out.voice);
936 AUD_remove_card(&s->card);
937
938 streambuf_fini(&s->out.buf);
939 }
940
941 static void usb_audio_realize(USBDevice *dev, Error **errp)
942 {
943 USBAudioState *s = USB_AUDIO(dev);
944 int i;
945
946 dev->usb_desc = s->multi ? &desc_audio_multi : &desc_audio;
947
948 usb_desc_create_serial(dev);
949 usb_desc_init(dev);
950 s->dev.opaque = s;
951 AUD_register_card(TYPE_USB_AUDIO, &s->card);
952
953 s->out.altset = ALTSET_OFF;
954 s->out.vol.mute = false;
955 for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
956 s->out.vol.vol[i] = 240; /* 0 dB */
957 }
958
959 usb_audio_reinit(dev, 2);
960 }
961
962 static void usb_audio_reinit(USBDevice *dev, unsigned channels)
963 {
964 USBAudioState *s = USB_AUDIO(dev);
965
966 s->out.channels = channels;
967 if (!s->buffer_user) {
968 s->buffer = 32 * USBAUDIO_PACKET_SIZE(s->out.channels);
969 } else {
970 s->buffer = s->buffer_user;
971 }
972
973 s->out.vol.channels = s->out.channels;
974 s->out.as.freq = USBAUDIO_SAMPLE_RATE;
975 s->out.as.nchannels = s->out.channels;
976 s->out.as.fmt = AUDIO_FORMAT_S16;
977 s->out.as.endianness = 0;
978 streambuf_init(&s->out.buf, s->buffer, s->out.channels);
979
980 s->out.voice = AUD_open_out(&s->card, s->out.voice, TYPE_USB_AUDIO,
981 s, output_callback, &s->out.as);
982 audio_set_volume_out(s->out.voice, &s->out.vol);
983 AUD_set_active_out(s->out.voice, 0);
984 }
985
986 static const VMStateDescription vmstate_usb_audio = {
987 .name = TYPE_USB_AUDIO,
988 .unmigratable = 1,
989 };
990
991 static Property usb_audio_properties[] = {
992 DEFINE_AUDIO_PROPERTIES(USBAudioState, card),
993 DEFINE_PROP_UINT32("debug", USBAudioState, debug, 0),
994 DEFINE_PROP_UINT32("buffer", USBAudioState, buffer_user, 0),
995 DEFINE_PROP_BOOL("multi", USBAudioState, multi, false),
996 DEFINE_PROP_END_OF_LIST(),
997 };
998
999 static void usb_audio_class_init(ObjectClass *klass, void *data)
1000 {
1001 DeviceClass *dc = DEVICE_CLASS(klass);
1002 USBDeviceClass *k = USB_DEVICE_CLASS(klass);
1003
1004 dc->vmsd = &vmstate_usb_audio;
1005 dc->props = usb_audio_properties;
1006 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1007 k->product_desc = "QEMU USB Audio Interface";
1008 k->realize = usb_audio_realize;
1009 k->handle_reset = usb_audio_handle_reset;
1010 k->handle_control = usb_audio_handle_control;
1011 k->handle_data = usb_audio_handle_data;
1012 k->unrealize = usb_audio_unrealize;
1013 k->set_interface = usb_audio_set_interface;
1014 }
1015
1016 static const TypeInfo usb_audio_info = {
1017 .name = TYPE_USB_AUDIO,
1018 .parent = TYPE_USB_DEVICE,
1019 .instance_size = sizeof(USBAudioState),
1020 .class_init = usb_audio_class_init,
1021 };
1022
1023 static void usb_audio_register_types(void)
1024 {
1025 type_register_static(&usb_audio_info);
1026 usb_legacy_register(TYPE_USB_AUDIO, "audio", NULL);
1027 }
1028
1029 type_init(usb_audio_register_types)
QEmu