diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
---|---|---|
committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/hw/usb/dev-audio.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/hw/usb/dev-audio.c')
-rw-r--r-- | qemu/hw/usb/dev-audio.c | 702 |
1 files changed, 702 insertions, 0 deletions
diff --git a/qemu/hw/usb/dev-audio.c b/qemu/hw/usb/dev-audio.c new file mode 100644 index 000000000..f092bb849 --- /dev/null +++ b/qemu/hw/usb/dev-audio.c @@ -0,0 +1,702 @@ +/* + * QEMU USB audio device + * + * written by: + * H. Peter Anvin <hpa@linux.intel.com> + * Gerd Hoffmann <kraxel@redhat.com> + * + * lousely based on usb net device code which is: + * + * Copyright (c) 2006 Thomas Sailer + * Copyright (c) 2008 Andrzej Zaborowski + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu-common.h" +#include "hw/usb.h" +#include "hw/usb/desc.h" +#include "hw/hw.h" +#include "audio/audio.h" + +#define USBAUDIO_VENDOR_NUM 0x46f4 /* CRC16() of "QEMU" */ +#define USBAUDIO_PRODUCT_NUM 0x0002 + +#define DEV_CONFIG_VALUE 1 /* The one and only */ + +/* Descriptor subtypes for AC interfaces */ +#define DST_AC_HEADER 1 +#define DST_AC_INPUT_TERMINAL 2 +#define DST_AC_OUTPUT_TERMINAL 3 +#define DST_AC_FEATURE_UNIT 6 +/* Descriptor subtypes for AS interfaces */ +#define DST_AS_GENERAL 1 +#define DST_AS_FORMAT_TYPE 2 +/* Descriptor subtypes for endpoints */ +#define DST_EP_GENERAL 1 + +enum usb_audio_strings { + STRING_NULL, + STRING_MANUFACTURER, + STRING_PRODUCT, + STRING_SERIALNUMBER, + STRING_CONFIG, + STRING_USBAUDIO_CONTROL, + STRING_INPUT_TERMINAL, + STRING_FEATURE_UNIT, + STRING_OUTPUT_TERMINAL, + STRING_NULL_STREAM, + STRING_REAL_STREAM, +}; + +static const USBDescStrings usb_audio_stringtable = { + [STRING_MANUFACTURER] = "QEMU", + [STRING_PRODUCT] = "QEMU USB Audio", + [STRING_SERIALNUMBER] = "1", + [STRING_CONFIG] = "Audio Configuration", + [STRING_USBAUDIO_CONTROL] = "Audio Device", + [STRING_INPUT_TERMINAL] = "Audio Output Pipe", + [STRING_FEATURE_UNIT] = "Audio Output Volume Control", + [STRING_OUTPUT_TERMINAL] = "Audio Output Terminal", + [STRING_NULL_STREAM] = "Audio Output - Disabled", + [STRING_REAL_STREAM] = "Audio Output - 48 kHz Stereo", +}; + +#define U16(x) ((x) & 0xff), (((x) >> 8) & 0xff) +#define U24(x) U16(x), (((x) >> 16) & 0xff) +#define U32(x) U24(x), (((x) >> 24) & 0xff) + +/* + * A Basic Audio Device uses these specific values + */ +#define USBAUDIO_PACKET_SIZE 192 +#define USBAUDIO_SAMPLE_RATE 48000 +#define USBAUDIO_PACKET_INTERVAL 1 + +static const USBDescIface desc_iface[] = { + { + .bInterfaceNumber = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL, + .bInterfaceProtocol = 0x04, + .iInterface = STRING_USBAUDIO_CONTROL, + .ndesc = 4, + .descs = (USBDescOther[]) { + { + /* Headphone Class-Specific AC Interface Header Descriptor */ + .data = (uint8_t[]) { + 0x09, /* u8 bLength */ + USB_DT_CS_INTERFACE, /* u8 bDescriptorType */ + DST_AC_HEADER, /* u8 bDescriptorSubtype */ + U16(0x0100), /* u16 bcdADC */ + U16(0x2b), /* u16 wTotalLength */ + 0x01, /* u8 bInCollection */ + 0x01, /* u8 baInterfaceNr */ + } + },{ + /* Generic Stereo Input Terminal ID1 Descriptor */ + .data = (uint8_t[]) { + 0x0c, /* u8 bLength */ + USB_DT_CS_INTERFACE, /* u8 bDescriptorType */ + DST_AC_INPUT_TERMINAL, /* u8 bDescriptorSubtype */ + 0x01, /* u8 bTerminalID */ + U16(0x0101), /* u16 wTerminalType */ + 0x00, /* u8 bAssocTerminal */ + 0x02, /* u16 bNrChannels */ + U16(0x0003), /* u16 wChannelConfig */ + 0x00, /* u8 iChannelNames */ + STRING_INPUT_TERMINAL, /* u8 iTerminal */ + } + },{ + /* Generic Stereo Feature Unit ID2 Descriptor */ + .data = (uint8_t[]) { + 0x0d, /* u8 bLength */ + USB_DT_CS_INTERFACE, /* u8 bDescriptorType */ + DST_AC_FEATURE_UNIT, /* u8 bDescriptorSubtype */ + 0x02, /* u8 bUnitID */ + 0x01, /* u8 bSourceID */ + 0x02, /* u8 bControlSize */ + U16(0x0001), /* u16 bmaControls(0) */ + U16(0x0002), /* u16 bmaControls(1) */ + U16(0x0002), /* u16 bmaControls(2) */ + STRING_FEATURE_UNIT, /* u8 iFeature */ + } + },{ + /* Headphone Ouptut Terminal ID3 Descriptor */ + .data = (uint8_t[]) { + 0x09, /* u8 bLength */ + USB_DT_CS_INTERFACE, /* u8 bDescriptorType */ + DST_AC_OUTPUT_TERMINAL, /* u8 bDescriptorSubtype */ + 0x03, /* u8 bUnitID */ + U16(0x0301), /* u16 wTerminalType (SPK) */ + 0x00, /* u8 bAssocTerminal */ + 0x02, /* u8 bSourceID */ + STRING_OUTPUT_TERMINAL, /* u8 iTerminal */ + } + } + }, + },{ + .bInterfaceNumber = 1, + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING, + .iInterface = STRING_NULL_STREAM, + },{ + .bInterfaceNumber = 1, + .bAlternateSetting = 1, + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_AUDIO, + .bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING, + .iInterface = STRING_REAL_STREAM, + .ndesc = 2, + .descs = (USBDescOther[]) { + { + /* Headphone Class-specific AS General Interface Descriptor */ + .data = (uint8_t[]) { + 0x07, /* u8 bLength */ + USB_DT_CS_INTERFACE, /* u8 bDescriptorType */ + DST_AS_GENERAL, /* u8 bDescriptorSubtype */ + 0x01, /* u8 bTerminalLink */ + 0x00, /* u8 bDelay */ + 0x01, 0x00, /* u16 wFormatTag */ + } + },{ + /* Headphone Type I Format Type Descriptor */ + .data = (uint8_t[]) { + 0x0b, /* u8 bLength */ + USB_DT_CS_INTERFACE, /* u8 bDescriptorType */ + DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */ + 0x01, /* u8 bFormatType */ + 0x02, /* u8 bNrChannels */ + 0x02, /* u8 bSubFrameSize */ + 0x10, /* u8 bBitResolution */ + 0x01, /* u8 bSamFreqType */ + U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */ + } + } + }, + .eps = (USBDescEndpoint[]) { + { + .bEndpointAddress = USB_DIR_OUT | 0x01, + .bmAttributes = 0x0d, + .wMaxPacketSize = USBAUDIO_PACKET_SIZE, + .bInterval = 1, + .is_audio = 1, + /* Stereo Headphone Class-specific + AS Audio Data Endpoint Descriptor */ + .extra = (uint8_t[]) { + 0x07, /* u8 bLength */ + USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */ + DST_EP_GENERAL, /* u8 bDescriptorSubtype */ + 0x00, /* u8 bmAttributes */ + 0x00, /* u8 bLockDelayUnits */ + U16(0x0000), /* u16 wLockDelay */ + }, + }, + } + } +}; + +static const USBDescDevice desc_device = { + .bcdUSB = 0x0100, + .bMaxPacketSize0 = 64, + .bNumConfigurations = 1, + .confs = (USBDescConfig[]) { + { + .bNumInterfaces = 2, + .bConfigurationValue = DEV_CONFIG_VALUE, + .iConfiguration = STRING_CONFIG, + .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER, + .bMaxPower = 0x32, + .nif = ARRAY_SIZE(desc_iface), + .ifs = desc_iface, + }, + }, +}; + +static const USBDesc desc_audio = { + .id = { + .idVendor = USBAUDIO_VENDOR_NUM, + .idProduct = USBAUDIO_PRODUCT_NUM, + .bcdDevice = 0, + .iManufacturer = STRING_MANUFACTURER, + .iProduct = STRING_PRODUCT, + .iSerialNumber = STRING_SERIALNUMBER, + }, + .full = &desc_device, + .str = usb_audio_stringtable, +}; + +/* + * A USB audio device supports an arbitrary number of alternate + * interface settings for each interface. Each corresponds to a block + * diagram of parameterized blocks. This can thus refer to things like + * number of channels, data rates, or in fact completely different + * block diagrams. Alternative setting 0 is always the null block diagram, + * which is used by a disabled device. + */ +enum usb_audio_altset { + ALTSET_OFF = 0x00, /* No endpoint */ + ALTSET_ON = 0x01, /* Single endpoint */ +}; + +/* + * Class-specific control requests + */ +#define CR_SET_CUR 0x01 +#define CR_GET_CUR 0x81 +#define CR_SET_MIN 0x02 +#define CR_GET_MIN 0x82 +#define CR_SET_MAX 0x03 +#define CR_GET_MAX 0x83 +#define CR_SET_RES 0x04 +#define CR_GET_RES 0x84 +#define CR_SET_MEM 0x05 +#define CR_GET_MEM 0x85 +#define CR_GET_STAT 0xff + +/* + * Feature Unit Control Selectors + */ +#define MUTE_CONTROL 0x01 +#define VOLUME_CONTROL 0x02 +#define BASS_CONTROL 0x03 +#define MID_CONTROL 0x04 +#define TREBLE_CONTROL 0x05 +#define GRAPHIC_EQUALIZER_CONTROL 0x06 +#define AUTOMATIC_GAIN_CONTROL 0x07 +#define DELAY_CONTROL 0x08 +#define BASS_BOOST_CONTROL 0x09 +#define LOUDNESS_CONTROL 0x0a + +/* + * buffering + */ + +struct streambuf { + uint8_t *data; + uint32_t size; + uint32_t prod; + uint32_t cons; +}; + +static void streambuf_init(struct streambuf *buf, uint32_t size) +{ + g_free(buf->data); + buf->size = size - (size % USBAUDIO_PACKET_SIZE); + buf->data = g_malloc(buf->size); + buf->prod = 0; + buf->cons = 0; +} + +static void streambuf_fini(struct streambuf *buf) +{ + g_free(buf->data); + buf->data = NULL; +} + +static int streambuf_put(struct streambuf *buf, USBPacket *p) +{ + uint32_t free = buf->size - (buf->prod - buf->cons); + + if (!free) { + return 0; + } + assert(free >= USBAUDIO_PACKET_SIZE); + usb_packet_copy(p, buf->data + (buf->prod % buf->size), + USBAUDIO_PACKET_SIZE); + buf->prod += USBAUDIO_PACKET_SIZE; + return USBAUDIO_PACKET_SIZE; +} + +static uint8_t *streambuf_get(struct streambuf *buf) +{ + uint32_t used = buf->prod - buf->cons; + uint8_t *data; + + if (!used) { + return NULL; + } + assert(used >= USBAUDIO_PACKET_SIZE); + data = buf->data + (buf->cons % buf->size); + buf->cons += USBAUDIO_PACKET_SIZE; + return data; +} + +typedef struct USBAudioState { + /* qemu interfaces */ + USBDevice dev; + QEMUSoundCard card; + + /* state */ + struct { + enum usb_audio_altset altset; + struct audsettings as; + SWVoiceOut *voice; + bool mute; + uint8_t vol[2]; + struct streambuf buf; + } out; + + /* properties */ + uint32_t debug; + uint32_t buffer; +} USBAudioState; + +#define TYPE_USB_AUDIO "usb-audio" +#define USB_AUDIO(obj) OBJECT_CHECK(USBAudioState, (obj), TYPE_USB_AUDIO) + +static void output_callback(void *opaque, int avail) +{ + USBAudioState *s = opaque; + uint8_t *data; + + for (;;) { + if (avail < USBAUDIO_PACKET_SIZE) { + return; + } + data = streambuf_get(&s->out.buf); + if (!data) { + return; + } + AUD_write(s->out.voice, data, USBAUDIO_PACKET_SIZE); + avail -= USBAUDIO_PACKET_SIZE; + } +} + +static int usb_audio_set_output_altset(USBAudioState *s, int altset) +{ + switch (altset) { + case ALTSET_OFF: + streambuf_init(&s->out.buf, s->buffer); + AUD_set_active_out(s->out.voice, false); + break; + case ALTSET_ON: + AUD_set_active_out(s->out.voice, true); + break; + default: + return -1; + } + + if (s->debug) { + fprintf(stderr, "usb-audio: set interface %d\n", altset); + } + s->out.altset = altset; + return 0; +} + +/* + * Note: we arbitrarily map the volume control range onto -inf..+8 dB + */ +#define ATTRIB_ID(cs, attrib, idif) \ + (((cs) << 24) | ((attrib) << 16) | (idif)) + +static int usb_audio_get_control(USBAudioState *s, uint8_t attrib, + uint16_t cscn, uint16_t idif, + int length, uint8_t *data) +{ + uint8_t cs = cscn >> 8; + uint8_t cn = cscn - 1; /* -1 for the non-present master control */ + uint32_t aid = ATTRIB_ID(cs, attrib, idif); + int ret = USB_RET_STALL; + + switch (aid) { + case ATTRIB_ID(MUTE_CONTROL, CR_GET_CUR, 0x0200): + data[0] = s->out.mute; + ret = 1; + break; + case ATTRIB_ID(VOLUME_CONTROL, CR_GET_CUR, 0x0200): + if (cn < 2) { + uint16_t vol = (s->out.vol[cn] * 0x8800 + 127) / 255 + 0x8000; + data[0] = vol; + data[1] = vol >> 8; + ret = 2; + } + break; + case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MIN, 0x0200): + if (cn < 2) { + data[0] = 0x01; + data[1] = 0x80; + ret = 2; + } + break; + case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MAX, 0x0200): + if (cn < 2) { + data[0] = 0x00; + data[1] = 0x08; + ret = 2; + } + break; + case ATTRIB_ID(VOLUME_CONTROL, CR_GET_RES, 0x0200): + if (cn < 2) { + data[0] = 0x88; + data[1] = 0x00; + ret = 2; + } + break; + } + + return ret; +} +static int usb_audio_set_control(USBAudioState *s, uint8_t attrib, + uint16_t cscn, uint16_t idif, + int length, uint8_t *data) +{ + uint8_t cs = cscn >> 8; + uint8_t cn = cscn - 1; /* -1 for the non-present master control */ + uint32_t aid = ATTRIB_ID(cs, attrib, idif); + int ret = USB_RET_STALL; + bool set_vol = false; + + switch (aid) { + case ATTRIB_ID(MUTE_CONTROL, CR_SET_CUR, 0x0200): + s->out.mute = data[0] & 1; + set_vol = true; + ret = 0; + break; + case ATTRIB_ID(VOLUME_CONTROL, CR_SET_CUR, 0x0200): + if (cn < 2) { + uint16_t vol = data[0] + (data[1] << 8); + + if (s->debug) { + fprintf(stderr, "usb-audio: vol %04x\n", (uint16_t)vol); + } + + vol -= 0x8000; + vol = (vol * 255 + 0x4400) / 0x8800; + if (vol > 255) { + vol = 255; + } + + s->out.vol[cn] = vol; + set_vol = true; + ret = 0; + } + break; + } + + if (set_vol) { + if (s->debug) { + fprintf(stderr, "usb-audio: mute %d, lvol %3d, rvol %3d\n", + s->out.mute, s->out.vol[0], s->out.vol[1]); + } + AUD_set_volume_out(s->out.voice, s->out.mute, + s->out.vol[0], s->out.vol[1]); + } + + return ret; +} + +static void usb_audio_handle_control(USBDevice *dev, USBPacket *p, + int request, int value, int index, + int length, uint8_t *data) +{ + USBAudioState *s = USB_AUDIO(dev); + int ret = 0; + + if (s->debug) { + fprintf(stderr, "usb-audio: control transaction: " + "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n", + request, value, index, length); + } + + ret = usb_desc_handle_control(dev, p, request, value, index, length, data); + if (ret >= 0) { + return; + } + + switch (request) { + case ClassInterfaceRequest | CR_GET_CUR: + case ClassInterfaceRequest | CR_GET_MIN: + case ClassInterfaceRequest | CR_GET_MAX: + case ClassInterfaceRequest | CR_GET_RES: + ret = usb_audio_get_control(s, request & 0xff, value, index, + length, data); + if (ret < 0) { + if (s->debug) { + fprintf(stderr, "usb-audio: fail: get control\n"); + } + goto fail; + } + p->actual_length = ret; + break; + + case ClassInterfaceOutRequest | CR_SET_CUR: + case ClassInterfaceOutRequest | CR_SET_MIN: + case ClassInterfaceOutRequest | CR_SET_MAX: + case ClassInterfaceOutRequest | CR_SET_RES: + ret = usb_audio_set_control(s, request & 0xff, value, index, + length, data); + if (ret < 0) { + if (s->debug) { + fprintf(stderr, "usb-audio: fail: set control\n"); + } + goto fail; + } + break; + + default: +fail: + if (s->debug) { + fprintf(stderr, "usb-audio: failed control transaction: " + "request 0x%04x value 0x%04x index 0x%04x length 0x%04x\n", + request, value, index, length); + } + p->status = USB_RET_STALL; + break; + } +} + +static void usb_audio_set_interface(USBDevice *dev, int iface, + int old, int value) +{ + USBAudioState *s = USB_AUDIO(dev); + + if (iface == 1) { + usb_audio_set_output_altset(s, value); + } +} + +static void usb_audio_handle_reset(USBDevice *dev) +{ + USBAudioState *s = USB_AUDIO(dev); + + if (s->debug) { + fprintf(stderr, "usb-audio: reset\n"); + } + usb_audio_set_output_altset(s, ALTSET_OFF); +} + +static void usb_audio_handle_dataout(USBAudioState *s, USBPacket *p) +{ + if (s->out.altset == ALTSET_OFF) { + p->status = USB_RET_STALL; + return; + } + + streambuf_put(&s->out.buf, p); + if (p->actual_length < p->iov.size && s->debug > 1) { + fprintf(stderr, "usb-audio: output overrun (%zd bytes)\n", + p->iov.size - p->actual_length); + } +} + +static void usb_audio_handle_data(USBDevice *dev, USBPacket *p) +{ + USBAudioState *s = (USBAudioState *) dev; + + if (p->pid == USB_TOKEN_OUT && p->ep->nr == 1) { + usb_audio_handle_dataout(s, p); + return; + } + + p->status = USB_RET_STALL; + if (s->debug) { + fprintf(stderr, "usb-audio: failed data transaction: " + "pid 0x%x ep 0x%x len 0x%zx\n", + p->pid, p->ep->nr, p->iov.size); + } +} + +static void usb_audio_handle_destroy(USBDevice *dev) +{ + USBAudioState *s = USB_AUDIO(dev); + + if (s->debug) { + fprintf(stderr, "usb-audio: destroy\n"); + } + + usb_audio_set_output_altset(s, ALTSET_OFF); + AUD_close_out(&s->card, s->out.voice); + AUD_remove_card(&s->card); + + streambuf_fini(&s->out.buf); +} + +static void usb_audio_realize(USBDevice *dev, Error **errp) +{ + USBAudioState *s = USB_AUDIO(dev); + + usb_desc_create_serial(dev); + usb_desc_init(dev); + s->dev.opaque = s; + AUD_register_card(TYPE_USB_AUDIO, &s->card); + + s->out.altset = ALTSET_OFF; + s->out.mute = false; + s->out.vol[0] = 240; /* 0 dB */ + s->out.vol[1] = 240; /* 0 dB */ + s->out.as.freq = USBAUDIO_SAMPLE_RATE; + s->out.as.nchannels = 2; + s->out.as.fmt = AUD_FMT_S16; + s->out.as.endianness = 0; + streambuf_init(&s->out.buf, s->buffer); + + s->out.voice = AUD_open_out(&s->card, s->out.voice, TYPE_USB_AUDIO, + s, output_callback, &s->out.as); + AUD_set_volume_out(s->out.voice, s->out.mute, s->out.vol[0], s->out.vol[1]); + AUD_set_active_out(s->out.voice, 0); +} + +static const VMStateDescription vmstate_usb_audio = { + .name = TYPE_USB_AUDIO, + .unmigratable = 1, +}; + +static Property usb_audio_properties[] = { + DEFINE_PROP_UINT32("debug", USBAudioState, debug, 0), + DEFINE_PROP_UINT32("buffer", USBAudioState, buffer, + 8 * USBAUDIO_PACKET_SIZE), + DEFINE_PROP_END_OF_LIST(), +}; + +static void usb_audio_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + USBDeviceClass *k = USB_DEVICE_CLASS(klass); + + dc->vmsd = &vmstate_usb_audio; + dc->props = usb_audio_properties; + set_bit(DEVICE_CATEGORY_SOUND, dc->categories); + k->product_desc = "QEMU USB Audio Interface"; + k->usb_desc = &desc_audio; + k->realize = usb_audio_realize; + k->handle_reset = usb_audio_handle_reset; + k->handle_control = usb_audio_handle_control; + k->handle_data = usb_audio_handle_data; + k->handle_destroy = usb_audio_handle_destroy; + k->set_interface = usb_audio_set_interface; +} + +static const TypeInfo usb_audio_info = { + .name = TYPE_USB_AUDIO, + .parent = TYPE_USB_DEVICE, + .instance_size = sizeof(USBAudioState), + .class_init = usb_audio_class_init, +}; + +static void usb_audio_register_types(void) +{ + type_register_static(&usb_audio_info); + usb_legacy_register(TYPE_USB_AUDIO, "audio", NULL); +} + +type_init(usb_audio_register_types) |