| 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/core/qdev-properties.h" |
| 35 | #include "hw/usb/usb.h" |
| 36 | #include "migration/vmstate.h" |
| 37 | #include "desc.h" |
| 38 | #include "qemu/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 | AudioBackend *audio_be; |
| 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 = audio_be_write(s->audio_be, 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 | audio_be_set_active_out(s->audio_be, 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 | audio_be_set_active_out(s->audio_be, 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_be_set_volume_out(s->audio_be, 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 | audio_be_close_out(s->audio_be, s->out.voice); |
| 935 | |
| 936 | streambuf_fini(&s->out.buf); |
| 937 | } |
| 938 | |
| 939 | static void usb_audio_realize(USBDevice *dev, Error **errp) |
| 940 | { |
| 941 | USBAudioState *s = USB_AUDIO(dev); |
| 942 | int i; |
| 943 | |
| 944 | if (!audio_be_check(&s->audio_be, errp)) { |
| 945 | return; |
| 946 | } |
| 947 | |
| 948 | dev->usb_desc = s->multi ? &desc_audio_multi : &desc_audio; |
| 949 | |
| 950 | usb_desc_create_serial(dev); |
| 951 | usb_desc_init(dev); |
| 952 | s->dev.opaque = s; |
| 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; /* 0 dB */ |
| 958 | } |
| 959 | |
| 960 | usb_audio_reinit(dev, 2); |
| 961 | } |
| 962 | |
| 963 | static 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.big_endian = false; |
| 979 | streambuf_init(&s->out.buf, s->buffer, s->out.channels); |
| 980 | |
| 981 | s->out.voice = audio_be_open_out(s->audio_be, s->out.voice, TYPE_USB_AUDIO, |
| 982 | s, output_callback, &s->out.as); |
| 983 | audio_be_set_volume_out(s->audio_be, s->out.voice, &s->out.vol); |
| 984 | audio_be_set_active_out(s->audio_be, s->out.voice, 0); |
| 985 | } |
| 986 | |
| 987 | static const VMStateDescription vmstate_usb_audio = { |
| 988 | .name = TYPE_USB_AUDIO, |
| 989 | .unmigratable = 1, |
| 990 | }; |
| 991 | |
| 992 | static const Property usb_audio_properties[] = { |
| 993 | DEFINE_AUDIO_PROPERTIES(USBAudioState, audio_be), |
| 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 | }; |
| 998 | |
| 999 | static void usb_audio_class_init(ObjectClass *klass, const void *data) |
| 1000 | { |
| 1001 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 1002 | USBDeviceClass *k = USB_DEVICE_CLASS(klass); |
| 1003 | |
| 1004 | dc->vmsd = &vmstate_usb_audio; |
| 1005 | device_class_set_props(dc, 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 | } |
| 1027 | |
| 1028 | type_init(usb_audio_register_types) |