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Merge tag 'v9.0.0-rc3'
[qemu/ar7.git] / hw / usb / dev-audio.c
blob1897fff9e6f2316afde010ec2028d9322cbe860f
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 #include "qom/object.h"
40
41 static void usb_audio_reinit(USBDevice *dev, unsigned channels);
42
43 #define USBAUDIO_VENDOR_NUM 0x46f4 /* CRC16() of "QEMU" */
44 #define USBAUDIO_PRODUCT_NUM 0x0002
45
46 #define DEV_CONFIG_VALUE 1 /* The one and only */
47
48 #define USBAUDIO_MAX_CHANNELS(s) (s->multi ? 8 : 2)
49
50 /* Descriptor subtypes for AC interfaces */
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 /* Descriptor subtypes for AS interfaces */
56 #define DST_AS_GENERAL 1
57 #define DST_AS_FORMAT_TYPE 2
58 /* Descriptor subtypes for endpoints */
59 #define DST_EP_GENERAL 1
60
61 enum 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
75 static 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 * A USB audio device supports an arbitrary number of alternate
90 * interface settings for each interface. Each corresponds to a block
91 * diagram of parameterized blocks. This can thus refer to things like
92 * number of channels, data rates, or in fact completely different
93 * block diagrams. Alternative setting 0 is always the null block diagram,
94 * which is used by a disabled device.
95 */
96 enum usb_audio_altset {
97 ALTSET_OFF = 0x00, /* No endpoint */
98 ALTSET_STEREO = 0x01, /* Single endpoint */
99 ALTSET_51 = 0x02,
100 ALTSET_71 = 0x03,
101 };
102
103 static 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 * A Basic Audio Device uses these specific values
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
121 static const USBDescIface desc_iface[] = {
122 {
123 .bInterfaceNumber = 0,
124 .bNumEndpoints = 0,
125 .bInterfaceClass = USB_CLASS_AUDIO,
126 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
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 Output 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 .iInterface = STRING_USBAUDIO_CONTROL,
285 .ndesc = 4,
286 .descs = (USBDescOther[]) {
287 {
288 /* Headphone Class-Specific AC Interface Header Descriptor */
289 .data = (uint8_t[]) {
290 0x09, /* u8 bLength */
291 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
292 DST_AC_HEADER, /* u8 bDescriptorSubtype */
293 U16(0x0100), /* u16 bcdADC */
294 U16(0x37), /* u16 wTotalLength */
295 0x01, /* u8 bInCollection */
296 0x01, /* u8 baInterfaceNr */
297 }
298 },{
299 /* Generic Stereo Input Terminal ID1 Descriptor */
300 .data = (uint8_t[]) {
301 0x0c, /* u8 bLength */
302 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
303 DST_AC_INPUT_TERMINAL, /* u8 bDescriptorSubtype */
304 0x01, /* u8 bTerminalID */
305 U16(0x0101), /* u16 wTerminalType */
306 0x00, /* u8 bAssocTerminal */
307 0x08, /* u8 bNrChannels */
308 U16(0x063f), /* u16 wChannelConfig */
309 0x00, /* u8 iChannelNames */
310 STRING_INPUT_TERMINAL, /* u8 iTerminal */
311 }
312 },{
313 /* Generic Stereo Feature Unit ID2 Descriptor */
314 .data = (uint8_t[]) {
315 0x19, /* u8 bLength */
316 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
317 DST_AC_FEATURE_UNIT, /* u8 bDescriptorSubtype */
318 0x02, /* u8 bUnitID */
319 0x01, /* u8 bSourceID */
320 0x02, /* u8 bControlSize */
321 U16(0x0001), /* u16 bmaControls(0) */
322 U16(0x0002), /* u16 bmaControls(1) */
323 U16(0x0002), /* u16 bmaControls(2) */
324 U16(0x0002), /* u16 bmaControls(3) */
325 U16(0x0002), /* u16 bmaControls(4) */
326 U16(0x0002), /* u16 bmaControls(5) */
327 U16(0x0002), /* u16 bmaControls(6) */
328 U16(0x0002), /* u16 bmaControls(7) */
329 U16(0x0002), /* u16 bmaControls(8) */
330 STRING_FEATURE_UNIT, /* u8 iFeature */
331 }
332 },{
333 /* Headphone Output Terminal ID3 Descriptor */
334 .data = (uint8_t[]) {
335 0x09, /* u8 bLength */
336 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
337 DST_AC_OUTPUT_TERMINAL, /* u8 bDescriptorSubtype */
338 0x03, /* u8 bUnitID */
339 U16(0x0301), /* u16 wTerminalType (SPK) */
340 0x00, /* u8 bAssocTerminal */
341 0x02, /* u8 bSourceID */
342 STRING_OUTPUT_TERMINAL, /* u8 iTerminal */
343 }
344 }
345 },
346 },{
347 .bInterfaceNumber = 1,
348 .bAlternateSetting = ALTSET_OFF,
349 .bNumEndpoints = 0,
350 .bInterfaceClass = USB_CLASS_AUDIO,
351 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
352 .iInterface = STRING_NULL_STREAM,
353 },{
354 .bInterfaceNumber = 1,
355 .bAlternateSetting = ALTSET_STEREO,
356 .bNumEndpoints = 1,
357 .bInterfaceClass = USB_CLASS_AUDIO,
358 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
359 .iInterface = STRING_REAL_STREAM,
360 .ndesc = 2,
361 .descs = (USBDescOther[]) {
362 {
363 /* Headphone Class-specific AS General Interface Descriptor */
364 .data = (uint8_t[]) {
365 0x07, /* u8 bLength */
366 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
367 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
368 0x01, /* u8 bTerminalLink */
369 0x00, /* u8 bDelay */
370 0x01, 0x00, /* u16 wFormatTag */
371 }
372 },{
373 /* Headphone Type I Format Type Descriptor */
374 .data = (uint8_t[]) {
375 0x0b, /* u8 bLength */
376 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
377 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
378 0x01, /* u8 bFormatType */
379 0x02, /* u8 bNrChannels */
380 0x02, /* u8 bSubFrameSize */
381 0x10, /* u8 bBitResolution */
382 0x01, /* u8 bSamFreqType */
383 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
384 }
385 }
386 },
387 .eps = (USBDescEndpoint[]) {
388 {
389 .bEndpointAddress = USB_DIR_OUT | 0x01,
390 .bmAttributes = 0x0d,
391 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(2),
392 .bInterval = 1,
393 .is_audio = 1,
394 /* Stereo Headphone Class-specific
395 AS Audio Data Endpoint Descriptor */
396 .extra = (uint8_t[]) {
397 0x07, /* u8 bLength */
398 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
399 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
400 0x00, /* u8 bmAttributes */
401 0x00, /* u8 bLockDelayUnits */
402 U16(0x0000), /* u16 wLockDelay */
403 },
404 },
405 }
406 },{
407 .bInterfaceNumber = 1,
408 .bAlternateSetting = ALTSET_51,
409 .bNumEndpoints = 1,
410 .bInterfaceClass = USB_CLASS_AUDIO,
411 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
412 .iInterface = STRING_REAL_STREAM,
413 .ndesc = 2,
414 .descs = (USBDescOther[]) {
415 {
416 /* Headphone Class-specific AS General Interface Descriptor */
417 .data = (uint8_t[]) {
418 0x07, /* u8 bLength */
419 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
420 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
421 0x01, /* u8 bTerminalLink */
422 0x00, /* u8 bDelay */
423 0x01, 0x00, /* u16 wFormatTag */
424 }
425 },{
426 /* Headphone Type I Format Type Descriptor */
427 .data = (uint8_t[]) {
428 0x0b, /* u8 bLength */
429 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
430 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
431 0x01, /* u8 bFormatType */
432 0x06, /* u8 bNrChannels */
433 0x02, /* u8 bSubFrameSize */
434 0x10, /* u8 bBitResolution */
435 0x01, /* u8 bSamFreqType */
436 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
437 }
438 }
439 },
440 .eps = (USBDescEndpoint[]) {
441 {
442 .bEndpointAddress = USB_DIR_OUT | 0x01,
443 .bmAttributes = 0x0d,
444 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(6),
445 .bInterval = 1,
446 .is_audio = 1,
447 /* Stereo Headphone Class-specific
448 AS Audio Data Endpoint Descriptor */
449 .extra = (uint8_t[]) {
450 0x07, /* u8 bLength */
451 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
452 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
453 0x00, /* u8 bmAttributes */
454 0x00, /* u8 bLockDelayUnits */
455 U16(0x0000), /* u16 wLockDelay */
456 },
457 },
458 }
459 },{
460 .bInterfaceNumber = 1,
461 .bAlternateSetting = ALTSET_71,
462 .bNumEndpoints = 1,
463 .bInterfaceClass = USB_CLASS_AUDIO,
464 .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
465 .iInterface = STRING_REAL_STREAM,
466 .ndesc = 2,
467 .descs = (USBDescOther[]) {
468 {
469 /* Headphone Class-specific AS General Interface Descriptor */
470 .data = (uint8_t[]) {
471 0x07, /* u8 bLength */
472 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
473 DST_AS_GENERAL, /* u8 bDescriptorSubtype */
474 0x01, /* u8 bTerminalLink */
475 0x00, /* u8 bDelay */
476 0x01, 0x00, /* u16 wFormatTag */
477 }
478 },{
479 /* Headphone Type I Format Type Descriptor */
480 .data = (uint8_t[]) {
481 0x0b, /* u8 bLength */
482 USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
483 DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
484 0x01, /* u8 bFormatType */
485 0x08, /* u8 bNrChannels */
486 0x02, /* u8 bSubFrameSize */
487 0x10, /* u8 bBitResolution */
488 0x01, /* u8 bSamFreqType */
489 U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
490 }
491 }
492 },
493 .eps = (USBDescEndpoint[]) {
494 {
495 .bEndpointAddress = USB_DIR_OUT | 0x01,
496 .bmAttributes = 0x0d,
497 .wMaxPacketSize = USBAUDIO_PACKET_SIZE(8),
498 .bInterval = 1,
499 .is_audio = 1,
500 /* Stereo Headphone Class-specific
501 AS Audio Data Endpoint Descriptor */
502 .extra = (uint8_t[]) {
503 0x07, /* u8 bLength */
504 USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
505 DST_EP_GENERAL, /* u8 bDescriptorSubtype */
506 0x00, /* u8 bmAttributes */
507 0x00, /* u8 bLockDelayUnits */
508 U16(0x0000), /* u16 wLockDelay */
509 },
510 },
511 }
512 }
513 };
514
515 static const USBDescDevice desc_device_multi = {
516 .bcdUSB = 0x0100,
517 .bMaxPacketSize0 = 64,
518 .bNumConfigurations = 1,
519 .confs = (USBDescConfig[]) {
520 {
521 .bNumInterfaces = 2,
522 .bConfigurationValue = DEV_CONFIG_VALUE,
523 .iConfiguration = STRING_CONFIG,
524 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
525 .bMaxPower = 0x32,
526 .nif = ARRAY_SIZE(desc_iface_multi),
527 .ifs = desc_iface_multi,
528 }
529 },
530 };
531
532 static const USBDesc desc_audio_multi = {
533 .id = {
534 .idVendor = USBAUDIO_VENDOR_NUM,
535 .idProduct = USBAUDIO_PRODUCT_NUM,
536 .bcdDevice = 0,
537 .iManufacturer = STRING_MANUFACTURER,
538 .iProduct = STRING_PRODUCT,
539 .iSerialNumber = STRING_SERIALNUMBER,
540 },
541 .full = &desc_device_multi,
542 .str = usb_audio_stringtable,
543 };
544
545 /*
546 * Class-specific control requests
547 */
548 #define CR_SET_CUR 0x01
549 #define CR_GET_CUR 0x81
550 #define CR_SET_MIN 0x02
551 #define CR_GET_MIN 0x82
552 #define CR_SET_MAX 0x03
553 #define CR_GET_MAX 0x83
554 #define CR_SET_RES 0x04
555 #define CR_GET_RES 0x84
556 #define CR_SET_MEM 0x05
557 #define CR_GET_MEM 0x85
558 #define CR_GET_STAT 0xff
559
560 /*
561 * Feature Unit Control Selectors
562 */
563 #define MUTE_CONTROL 0x01
564 #define VOLUME_CONTROL 0x02
565 #define BASS_CONTROL 0x03
566 #define MID_CONTROL 0x04
567 #define TREBLE_CONTROL 0x05
568 #define GRAPHIC_EQUALIZER_CONTROL 0x06
569 #define AUTOMATIC_GAIN_CONTROL 0x07
570 #define DELAY_CONTROL 0x08
571 #define BASS_BOOST_CONTROL 0x09
572 #define LOUDNESS_CONTROL 0x0a
573
574 /*
575 * buffering
576 */
577
578 struct streambuf {
579 uint8_t *data;
580 size_t size;
581 uint64_t prod;
582 uint64_t cons;
583 };
584
585 static void streambuf_init(struct streambuf *buf, uint32_t size,
586 uint32_t channels)
587 {
588 g_free(buf->data);
589 buf->size = size - (size % USBAUDIO_PACKET_SIZE(channels));
590 buf->data = g_malloc(buf->size);
591 buf->prod = 0;
592 buf->cons = 0;
593 }
594
595 static void streambuf_fini(struct streambuf *buf)
596 {
597 g_free(buf->data);
598 buf->data = NULL;
599 }
600
601 static int streambuf_put(struct streambuf *buf, USBPacket *p, uint32_t channels)
602 {
603 int64_t free = buf->size - (buf->prod - buf->cons);
604
605 if (free < USBAUDIO_PACKET_SIZE(channels)) {
606 return 0;
607 }
608 if (p->iov.size != USBAUDIO_PACKET_SIZE(channels)) {
609 return 0;
610 }
611
612 /* can happen if prod overflows */
613 assert(buf->prod % USBAUDIO_PACKET_SIZE(channels) == 0);
614 usb_packet_copy(p, buf->data + (buf->prod % buf->size),
615 USBAUDIO_PACKET_SIZE(channels));
616 buf->prod += USBAUDIO_PACKET_SIZE(channels);
617 return USBAUDIO_PACKET_SIZE(channels);
618 }
619
620 static uint8_t *streambuf_get(struct streambuf *buf, size_t *len)
621 {
622 int64_t used = buf->prod - buf->cons;
623 uint8_t *data;
624
625 if (used <= 0) {
626 *len = 0;
627 return NULL;
628 }
629 data = buf->data + (buf->cons % buf->size);
630 *len = MIN(buf->prod - buf->cons,
631 buf->size - (buf->cons % buf->size));
632 return data;
633 }
634
635 struct USBAudioState {
636 /* qemu interfaces */
637 USBDevice dev;
638 QEMUSoundCard card;
639
640 /* state */
641 struct {
642 enum usb_audio_altset altset;
643 struct audsettings as;
644 SWVoiceOut *voice;
645 Volume vol;
646 struct streambuf buf;
647 uint32_t channels;
648 } out;
649
650 /* properties */
651 uint32_t debug;
652 uint32_t buffer_user, buffer;
653 bool multi;
654 };
655
656 #define TYPE_USB_AUDIO "usb-audio"
657 OBJECT_DECLARE_SIMPLE_TYPE(USBAudioState, USB_AUDIO)
658
659 static void output_callback(void *opaque, int avail)
660 {
661 USBAudioState *s = opaque;
662 uint8_t *data;
663
664 while (avail) {
665 size_t written, len;
666
667 data = streambuf_get(&s->out.buf, &len);
668 if (!data) {
669 return;
670 }
671
672 written = AUD_write(s->out.voice, data, len);
673 avail -= written;
674 s->out.buf.cons += written;
675
676 if (written < len) {
677 return;
678 }
679 }
680 }
681
682 static int usb_audio_set_output_altset(USBAudioState *s, int altset)
683 {
684 switch (altset) {
685 case ALTSET_OFF:
686 AUD_set_active_out(s->out.voice, false);
687 break;
688 case ALTSET_STEREO:
689 case ALTSET_51:
690 case ALTSET_71:
691 if (s->out.channels != altset_channels[altset]) {
692 usb_audio_reinit(USB_DEVICE(s), altset_channels[altset]);
693 }
694 streambuf_init(&s->out.buf, s->buffer, s->out.channels);
695 AUD_set_active_out(s->out.voice, true);
696 break;
697 default:
698 return -1;
699 }
700
701 if (s->debug) {
702 fprintf(stderr, "usb-audio: set interface %d\n", altset);
703 }
704 s->out.altset = altset;
705 return 0;
706 }
707
708 /*
709 * Note: we arbitrarily map the volume control range onto -inf..+8 dB
710 */
711 #define ATTRIB_ID(cs, attrib, idif) \
712 (((cs) << 24) | ((attrib) << 16) | (idif))
713
714 static int usb_audio_get_control(USBAudioState *s, uint8_t attrib,
715 uint16_t cscn, uint16_t idif,
716 int length, uint8_t *data)
717 {
718 uint8_t cs = cscn >> 8;
719 uint8_t cn = cscn - 1; /* -1 for the non-present master control */
720 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
721 int ret = USB_RET_STALL;
722
723 switch (aid) {
724 case ATTRIB_ID(MUTE_CONTROL, CR_GET_CUR, 0x0200):
725 data[0] = s->out.vol.mute;
726 ret = 1;
727 break;
728 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_CUR, 0x0200):
729 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
730 uint16_t vol = (s->out.vol.vol[cn] * 0x8800 + 127) / 255 + 0x8000;
731 data[0] = vol;
732 data[1] = vol >> 8;
733 ret = 2;
734 }
735 break;
736 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MIN, 0x0200):
737 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
738 data[0] = 0x01;
739 data[1] = 0x80;
740 ret = 2;
741 }
742 break;
743 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MAX, 0x0200):
744 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
745 data[0] = 0x00;
746 data[1] = 0x08;
747 ret = 2;
748 }
749 break;
750 case ATTRIB_ID(VOLUME_CONTROL, CR_GET_RES, 0x0200):
751 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
752 data[0] = 0x88;
753 data[1] = 0x00;
754 ret = 2;
755 }
756 break;
757 }
758
759 return ret;
760 }
761 static int usb_audio_set_control(USBAudioState *s, uint8_t attrib,
762 uint16_t cscn, uint16_t idif,
763 int length, uint8_t *data)
764 {
765 uint8_t cs = cscn >> 8;
766 uint8_t cn = cscn - 1; /* -1 for the non-present master control */
767 uint32_t aid = ATTRIB_ID(cs, attrib, idif);
768 int ret = USB_RET_STALL;
769 bool set_vol = false;
770
771 switch (aid) {
772 case ATTRIB_ID(MUTE_CONTROL, CR_SET_CUR, 0x0200):
773 s->out.vol.mute = data[0] & 1;
774 set_vol = true;
775 ret = 0;
776 break;
777 case ATTRIB_ID(VOLUME_CONTROL, CR_SET_CUR, 0x0200):
778 if (cn < USBAUDIO_MAX_CHANNELS(s)) {
779 uint16_t vol = data[0] + (data[1] << 8);
780
781 if (s->debug) {
782 fprintf(stderr, "usb-audio: cn %d vol %04x\n", cn,
783 (uint16_t)vol);
784 }
785
786 vol -= 0x8000;
787 vol = (vol * 255 + 0x4400) / 0x8800;
788 if (vol > 255) {
789 vol = 255;
790 }
791
792 s->out.vol.vol[cn] = vol;
793 set_vol = true;
794 ret = 0;
795 }
796 break;
797 }
798
799 if (set_vol) {
800 if (s->debug) {
801 int i;
802 fprintf(stderr, "usb-audio: mute %d", s->out.vol.mute);
803 for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
804 fprintf(stderr, ", vol[%d] %3d", i, s->out.vol.vol[i]);
805 }
806 fprintf(stderr, "\n");
807 }
808 audio_set_volume_out(s->out.voice, &s->out.vol);
809 }
810
811 return ret;
812 }
813
814 static void usb_audio_handle_control(USBDevice *dev, USBPacket *p,
815 int request, int value, int index,
816 int length, uint8_t *data)
817 {
818 USBAudioState *s = USB_AUDIO(dev);
819 int ret = 0;
820
821 if (s->debug) {
822 fprintf(stderr, "usb-audio: control transaction: "
823 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
824 request, value, index, length);
825 }
826
827 ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
828 if (ret >= 0) {
829 return;
830 }
831
832 switch (request) {
833 case ClassInterfaceRequest | CR_GET_CUR:
834 case ClassInterfaceRequest | CR_GET_MIN:
835 case ClassInterfaceRequest | CR_GET_MAX:
836 case ClassInterfaceRequest | CR_GET_RES:
837 ret = usb_audio_get_control(s, request & 0xff, value, index,
838 length, data);
839 if (ret < 0) {
840 if (s->debug) {
841 fprintf(stderr, "usb-audio: fail: get control\n");
842 }
843 goto fail;
844 }
845 p->actual_length = ret;
846 break;
847
848 case ClassInterfaceOutRequest | CR_SET_CUR:
849 case ClassInterfaceOutRequest | CR_SET_MIN:
850 case ClassInterfaceOutRequest | CR_SET_MAX:
851 case ClassInterfaceOutRequest | CR_SET_RES:
852 ret = usb_audio_set_control(s, request & 0xff, value, index,
853 length, data);
854 if (ret < 0) {
855 if (s->debug) {
856 fprintf(stderr, "usb-audio: fail: set control\n");
857 }
858 goto fail;
859 }
860 break;
861
862 default:
863 fail:
864 if (s->debug) {
865 fprintf(stderr, "usb-audio: failed control transaction: "
866 "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n",
867 request, value, index, length);
868 }
869 p->status = USB_RET_STALL;
870 break;
871 }
872 }
873
874 static void usb_audio_set_interface(USBDevice *dev, int iface,
875 int old, int value)
876 {
877 USBAudioState *s = USB_AUDIO(dev);
878
879 if (iface == 1) {
880 usb_audio_set_output_altset(s, value);
881 }
882 }
883
884 static void usb_audio_handle_reset(USBDevice *dev)
885 {
886 USBAudioState *s = USB_AUDIO(dev);
887
888 if (s->debug) {
889 fprintf(stderr, "usb-audio: reset\n");
890 }
891 usb_audio_set_output_altset(s, ALTSET_OFF);
892 }
893
894 static void usb_audio_handle_dataout(USBAudioState *s, USBPacket *p)
895 {
896 if (s->out.altset == ALTSET_OFF) {
897 p->status = USB_RET_STALL;
898 return;
899 }
900
901 streambuf_put(&s->out.buf, p, s->out.channels);
902 if (p->actual_length < p->iov.size && s->debug > 1) {
903 fprintf(stderr, "usb-audio: output overrun (%zd bytes)\n",
904 p->iov.size - p->actual_length);
905 }
906 }
907
908 static void usb_audio_handle_data(USBDevice *dev, USBPacket *p)
909 {
910 USBAudioState *s = (USBAudioState *) dev;
911
912 if (p->pid == USB_TOKEN_OUT && p->ep->nr == 1) {
913 usb_audio_handle_dataout(s, p);
914 return;
915 }
916
917 p->status = USB_RET_STALL;
918 if (s->debug) {
919 fprintf(stderr, "usb-audio: failed data transaction: "
920 "pid 0x%x ep 0x%x len 0x%zx\n",
921 p->pid, p->ep->nr, p->iov.size);
922 }
923 }
924
925 static void usb_audio_unrealize(USBDevice *dev)
926 {
927 USBAudioState *s = USB_AUDIO(dev);
928
929 if (s->debug) {
930 fprintf(stderr, "usb-audio: destroy\n");
931 }
932
933 usb_audio_set_output_altset(s, ALTSET_OFF);
934 AUD_close_out(&s->card, s->out.voice);
935 AUD_remove_card(&s->card);
936
937 streambuf_fini(&s->out.buf);
938 }
939
940 static void usb_audio_realize(USBDevice *dev, Error **errp)
941 {
942 USBAudioState *s = USB_AUDIO(dev);
943 int i;
944
945 if (!AUD_register_card(TYPE_USB_AUDIO, &s->card, errp)) {
946 return;
947 }
948
949 dev->usb_desc = s->multi ? &desc_audio_multi : &desc_audio;
950
951 usb_desc_create_serial(dev);
952 usb_desc_init(dev);
953 s->dev.opaque = s;
954
955 s->out.altset = ALTSET_OFF;
956 s->out.vol.mute = false;
957 for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
958 s->out.vol.vol[i] = 240; /* 0 dB */
959 }
960
961 usb_audio_reinit(dev, 2);
962 }
963
964 static void usb_audio_reinit(USBDevice *dev, unsigned channels)
965 {
966 USBAudioState *s = USB_AUDIO(dev);
967
968 s->out.channels = channels;
969 if (!s->buffer_user) {
970 s->buffer = 32 * USBAUDIO_PACKET_SIZE(s->out.channels);
971 } else {
972 s->buffer = s->buffer_user;
973 }
974
975 s->out.vol.channels = s->out.channels;
976 s->out.as.freq = USBAUDIO_SAMPLE_RATE;
977 s->out.as.nchannels = s->out.channels;
978 s->out.as.fmt = AUDIO_FORMAT_S16;
979 s->out.as.endianness = 0;
980 streambuf_init(&s->out.buf, s->buffer, s->out.channels);
981
982 s->out.voice = AUD_open_out(&s->card, s->out.voice, TYPE_USB_AUDIO,
983 s, output_callback, &s->out.as);
984 audio_set_volume_out(s->out.voice, &s->out.vol);
985 AUD_set_active_out(s->out.voice, 0);
986 }
987
988 static const VMStateDescription vmstate_usb_audio = {
989 .name = TYPE_USB_AUDIO,
990 .unmigratable = 1,
991 };
992
993 static Property usb_audio_properties[] = {
994 DEFINE_AUDIO_PROPERTIES(USBAudioState, card),
995 DEFINE_PROP_UINT32("debug", USBAudioState, debug, 0),
996 DEFINE_PROP_UINT32("buffer", USBAudioState, buffer_user, 0),
997 DEFINE_PROP_BOOL("multi", USBAudioState, multi, false),
998 DEFINE_PROP_END_OF_LIST(),
999 };
1000
1001 static void usb_audio_class_init(ObjectClass *klass, void *data)
1002 {
1003 DeviceClass *dc = DEVICE_CLASS(klass);
1004 USBDeviceClass *k = USB_DEVICE_CLASS(klass);
1005
1006 dc->vmsd = &vmstate_usb_audio;
1007 device_class_set_props(dc, usb_audio_properties);
1008 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1009 k->product_desc = "QEMU USB Audio Interface";
1010 k->realize = usb_audio_realize;
1011 k->handle_reset = usb_audio_handle_reset;
1012 k->handle_control = usb_audio_handle_control;
1013 k->handle_data = usb_audio_handle_data;
1014 k->unrealize = usb_audio_unrealize;
1015 k->set_interface = usb_audio_set_interface;
1016 }
1017
1018 static const TypeInfo usb_audio_info = {
1019 .name = TYPE_USB_AUDIO,
1020 .parent = TYPE_USB_DEVICE,
1021 .instance_size = sizeof(USBAudioState),
1022 .class_init = usb_audio_class_init,
1023 };
1024
1025 static void usb_audio_register_types(void)
1026 {
1027 type_register_static(&usb_audio_info);
1028 }
1029
1030 type_init(usb_audio_register_types)
AR7 emulation for QEMU