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1030 lines
38 KiB
C
1030 lines
38 KiB
C
/*
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* QEMU USB audio device
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*
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* written by:
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* H. Peter Anvin <hpa@linux.intel.com>
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* Gerd Hoffmann <kraxel@redhat.com>
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*
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* lousely based on usb net device code which is:
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*
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* Copyright (c) 2006 Thomas Sailer
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* Copyright (c) 2008 Andrzej Zaborowski
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qemu/module.h"
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#include "hw/qdev-properties.h"
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#include "hw/usb.h"
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#include "migration/vmstate.h"
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#include "desc.h"
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#include "audio/audio.h"
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#include "qom/object.h"
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static void usb_audio_reinit(USBDevice *dev, unsigned channels);
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#define USBAUDIO_VENDOR_NUM 0x46f4 /* CRC16() of "QEMU" */
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#define USBAUDIO_PRODUCT_NUM 0x0002
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#define DEV_CONFIG_VALUE 1 /* The one and only */
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#define USBAUDIO_MAX_CHANNELS(s) (s->multi ? 8 : 2)
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/* Descriptor subtypes for AC interfaces */
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#define DST_AC_HEADER 1
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#define DST_AC_INPUT_TERMINAL 2
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#define DST_AC_OUTPUT_TERMINAL 3
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#define DST_AC_FEATURE_UNIT 6
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/* Descriptor subtypes for AS interfaces */
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#define DST_AS_GENERAL 1
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#define DST_AS_FORMAT_TYPE 2
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/* Descriptor subtypes for endpoints */
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#define DST_EP_GENERAL 1
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enum usb_audio_strings {
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STRING_NULL,
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STRING_MANUFACTURER,
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STRING_PRODUCT,
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STRING_SERIALNUMBER,
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STRING_CONFIG,
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STRING_USBAUDIO_CONTROL,
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STRING_INPUT_TERMINAL,
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STRING_FEATURE_UNIT,
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STRING_OUTPUT_TERMINAL,
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STRING_NULL_STREAM,
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STRING_REAL_STREAM,
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};
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static const USBDescStrings usb_audio_stringtable = {
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[STRING_MANUFACTURER] = "QEMU",
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[STRING_PRODUCT] = "QEMU USB Audio",
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[STRING_SERIALNUMBER] = "1",
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[STRING_CONFIG] = "Audio Configuration",
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[STRING_USBAUDIO_CONTROL] = "Audio Device",
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[STRING_INPUT_TERMINAL] = "Audio Output Pipe",
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[STRING_FEATURE_UNIT] = "Audio Output Volume Control",
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[STRING_OUTPUT_TERMINAL] = "Audio Output Terminal",
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[STRING_NULL_STREAM] = "Audio Output - Disabled",
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[STRING_REAL_STREAM] = "Audio Output - 48 kHz Stereo",
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};
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/*
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* A USB audio device supports an arbitrary number of alternate
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* interface settings for each interface. Each corresponds to a block
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* diagram of parameterized blocks. This can thus refer to things like
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* number of channels, data rates, or in fact completely different
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* block diagrams. Alternative setting 0 is always the null block diagram,
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* which is used by a disabled device.
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*/
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enum usb_audio_altset {
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ALTSET_OFF = 0x00, /* No endpoint */
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ALTSET_STEREO = 0x01, /* Single endpoint */
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ALTSET_51 = 0x02,
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ALTSET_71 = 0x03,
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};
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static unsigned altset_channels[] = {
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[ALTSET_STEREO] = 2,
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[ALTSET_51] = 6,
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[ALTSET_71] = 8,
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};
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#define U16(x) ((x) & 0xff), (((x) >> 8) & 0xff)
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#define U24(x) U16(x), (((x) >> 16) & 0xff)
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#define U32(x) U24(x), (((x) >> 24) & 0xff)
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/*
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* A Basic Audio Device uses these specific values
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*/
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#define USBAUDIO_PACKET_SIZE_BASE 96
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#define USBAUDIO_PACKET_SIZE(channels) (USBAUDIO_PACKET_SIZE_BASE * channels)
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#define USBAUDIO_SAMPLE_RATE 48000
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#define USBAUDIO_PACKET_INTERVAL 1
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static const USBDescIface desc_iface[] = {
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{
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.bInterfaceNumber = 0,
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.bNumEndpoints = 0,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
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.bInterfaceProtocol = 0x04,
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.iInterface = STRING_USBAUDIO_CONTROL,
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.ndesc = 4,
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.descs = (USBDescOther[]) {
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{
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/* Headphone Class-Specific AC Interface Header Descriptor */
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.data = (uint8_t[]) {
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0x09, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_HEADER, /* u8 bDescriptorSubtype */
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U16(0x0100), /* u16 bcdADC */
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U16(0x2b), /* u16 wTotalLength */
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0x01, /* u8 bInCollection */
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0x01, /* u8 baInterfaceNr */
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}
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},{
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/* Generic Stereo Input Terminal ID1 Descriptor */
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.data = (uint8_t[]) {
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0x0c, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_INPUT_TERMINAL, /* u8 bDescriptorSubtype */
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0x01, /* u8 bTerminalID */
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U16(0x0101), /* u16 wTerminalType */
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0x00, /* u8 bAssocTerminal */
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0x02, /* u8 bNrChannels */
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U16(0x0003), /* u16 wChannelConfig */
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0x00, /* u8 iChannelNames */
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STRING_INPUT_TERMINAL, /* u8 iTerminal */
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}
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},{
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/* Generic Stereo Feature Unit ID2 Descriptor */
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.data = (uint8_t[]) {
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0x0d, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_FEATURE_UNIT, /* u8 bDescriptorSubtype */
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0x02, /* u8 bUnitID */
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0x01, /* u8 bSourceID */
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0x02, /* u8 bControlSize */
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U16(0x0001), /* u16 bmaControls(0) */
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U16(0x0002), /* u16 bmaControls(1) */
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U16(0x0002), /* u16 bmaControls(2) */
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STRING_FEATURE_UNIT, /* u8 iFeature */
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}
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},{
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/* Headphone Output Terminal ID3 Descriptor */
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.data = (uint8_t[]) {
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0x09, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_OUTPUT_TERMINAL, /* u8 bDescriptorSubtype */
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0x03, /* u8 bUnitID */
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U16(0x0301), /* u16 wTerminalType (SPK) */
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0x00, /* u8 bAssocTerminal */
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0x02, /* u8 bSourceID */
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STRING_OUTPUT_TERMINAL, /* u8 iTerminal */
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}
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}
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},
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},{
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.bInterfaceNumber = 1,
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.bAlternateSetting = ALTSET_OFF,
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.bNumEndpoints = 0,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
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.iInterface = STRING_NULL_STREAM,
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},{
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.bInterfaceNumber = 1,
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.bAlternateSetting = ALTSET_STEREO,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
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.iInterface = STRING_REAL_STREAM,
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.ndesc = 2,
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.descs = (USBDescOther[]) {
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{
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/* Headphone Class-specific AS General Interface Descriptor */
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.data = (uint8_t[]) {
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0x07, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AS_GENERAL, /* u8 bDescriptorSubtype */
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0x01, /* u8 bTerminalLink */
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0x00, /* u8 bDelay */
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0x01, 0x00, /* u16 wFormatTag */
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}
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},{
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/* Headphone Type I Format Type Descriptor */
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.data = (uint8_t[]) {
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0x0b, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
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0x01, /* u8 bFormatType */
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0x02, /* u8 bNrChannels */
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0x02, /* u8 bSubFrameSize */
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0x10, /* u8 bBitResolution */
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0x01, /* u8 bSamFreqType */
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U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
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}
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}
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},
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.eps = (USBDescEndpoint[]) {
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{
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.bEndpointAddress = USB_DIR_OUT | 0x01,
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.bmAttributes = 0x0d,
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.wMaxPacketSize = USBAUDIO_PACKET_SIZE(2),
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.bInterval = 1,
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.is_audio = 1,
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/* Stereo Headphone Class-specific
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AS Audio Data Endpoint Descriptor */
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.extra = (uint8_t[]) {
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0x07, /* u8 bLength */
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USB_DT_CS_ENDPOINT, /* u8 bDescriptorType */
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DST_EP_GENERAL, /* u8 bDescriptorSubtype */
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0x00, /* u8 bmAttributes */
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0x00, /* u8 bLockDelayUnits */
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U16(0x0000), /* u16 wLockDelay */
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},
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},
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}
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}
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};
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static const USBDescDevice desc_device = {
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.bcdUSB = 0x0100,
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.bMaxPacketSize0 = 64,
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.bNumConfigurations = 1,
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.confs = (USBDescConfig[]) {
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{
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.bNumInterfaces = 2,
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.bConfigurationValue = DEV_CONFIG_VALUE,
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.iConfiguration = STRING_CONFIG,
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.bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_SELFPOWER,
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.bMaxPower = 0x32,
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.nif = ARRAY_SIZE(desc_iface),
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.ifs = desc_iface,
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},
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},
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};
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static const USBDesc desc_audio = {
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.id = {
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.idVendor = USBAUDIO_VENDOR_NUM,
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.idProduct = USBAUDIO_PRODUCT_NUM,
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.bcdDevice = 0,
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.iManufacturer = STRING_MANUFACTURER,
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.iProduct = STRING_PRODUCT,
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.iSerialNumber = STRING_SERIALNUMBER,
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},
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.full = &desc_device,
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.str = usb_audio_stringtable,
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};
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/* multi channel compatible desc */
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static const USBDescIface desc_iface_multi[] = {
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{
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.bInterfaceNumber = 0,
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.bNumEndpoints = 0,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIO_CONTROL,
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.bInterfaceProtocol = 0x04,
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.iInterface = STRING_USBAUDIO_CONTROL,
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.ndesc = 4,
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.descs = (USBDescOther[]) {
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{
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/* Headphone Class-Specific AC Interface Header Descriptor */
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.data = (uint8_t[]) {
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0x09, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_HEADER, /* u8 bDescriptorSubtype */
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U16(0x0100), /* u16 bcdADC */
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U16(0x38), /* u16 wTotalLength */
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0x01, /* u8 bInCollection */
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0x01, /* u8 baInterfaceNr */
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}
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},{
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/* Generic Stereo Input Terminal ID1 Descriptor */
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.data = (uint8_t[]) {
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0x0c, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_INPUT_TERMINAL, /* u8 bDescriptorSubtype */
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0x01, /* u8 bTerminalID */
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U16(0x0101), /* u16 wTerminalType */
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0x00, /* u8 bAssocTerminal */
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0x08, /* u8 bNrChannels */
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U16(0x063f), /* u16 wChannelConfig */
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0x00, /* u8 iChannelNames */
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STRING_INPUT_TERMINAL, /* u8 iTerminal */
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}
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},{
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/* Generic Stereo Feature Unit ID2 Descriptor */
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.data = (uint8_t[]) {
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0x19, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_FEATURE_UNIT, /* u8 bDescriptorSubtype */
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0x02, /* u8 bUnitID */
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0x01, /* u8 bSourceID */
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0x02, /* u8 bControlSize */
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U16(0x0001), /* u16 bmaControls(0) */
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U16(0x0002), /* u16 bmaControls(1) */
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U16(0x0002), /* u16 bmaControls(2) */
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U16(0x0002), /* u16 bmaControls(3) */
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U16(0x0002), /* u16 bmaControls(4) */
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U16(0x0002), /* u16 bmaControls(5) */
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U16(0x0002), /* u16 bmaControls(6) */
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U16(0x0002), /* u16 bmaControls(7) */
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U16(0x0002), /* u16 bmaControls(8) */
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STRING_FEATURE_UNIT, /* u8 iFeature */
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}
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},{
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/* Headphone Output Terminal ID3 Descriptor */
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.data = (uint8_t[]) {
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0x09, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AC_OUTPUT_TERMINAL, /* u8 bDescriptorSubtype */
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0x03, /* u8 bUnitID */
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U16(0x0301), /* u16 wTerminalType (SPK) */
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0x00, /* u8 bAssocTerminal */
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0x02, /* u8 bSourceID */
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STRING_OUTPUT_TERMINAL, /* u8 iTerminal */
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}
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}
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},
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},{
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.bInterfaceNumber = 1,
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.bAlternateSetting = ALTSET_OFF,
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.bNumEndpoints = 0,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
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.iInterface = STRING_NULL_STREAM,
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},{
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.bInterfaceNumber = 1,
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.bAlternateSetting = ALTSET_STEREO,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIO_STREAMING,
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.iInterface = STRING_REAL_STREAM,
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.ndesc = 2,
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.descs = (USBDescOther[]) {
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{
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/* Headphone Class-specific AS General Interface Descriptor */
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.data = (uint8_t[]) {
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0x07, /* u8 bLength */
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AS_GENERAL, /* u8 bDescriptorSubtype */
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0x01, /* u8 bTerminalLink */
|
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0x00, /* u8 bDelay */
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0x01, 0x00, /* u16 wFormatTag */
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}
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},{
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/* Headphone Type I Format Type Descriptor */
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.data = (uint8_t[]) {
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0x0b, /* u8 bLength */
|
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USB_DT_CS_INTERFACE, /* u8 bDescriptorType */
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DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
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0x01, /* u8 bFormatType */
|
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0x02, /* u8 bNrChannels */
|
|
0x02, /* u8 bSubFrameSize */
|
|
0x10, /* u8 bBitResolution */
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0x01, /* u8 bSamFreqType */
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U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
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}
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}
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},
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.eps = (USBDescEndpoint[]) {
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{
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.bEndpointAddress = USB_DIR_OUT | 0x01,
|
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.bmAttributes = 0x0d,
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|
.wMaxPacketSize = USBAUDIO_PACKET_SIZE(2),
|
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.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 */
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|
},
|
|
},
|
|
}
|
|
},{
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.bInterfaceNumber = 1,
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.bAlternateSetting = ALTSET_51,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.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 */
|
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DST_AS_FORMAT_TYPE, /* u8 bDescriptorSubtype */
|
|
0x01, /* u8 bFormatType */
|
|
0x06, /* u8 bNrChannels */
|
|
0x02, /* u8 bSubFrameSize */
|
|
0x10, /* u8 bBitResolution */
|
|
0x01, /* u8 bSamFreqType */
|
|
U24(USBAUDIO_SAMPLE_RATE), /* u24 tSamFreq */
|
|
}
|
|
}
|
|
},
|
|
.eps = (USBDescEndpoint[]) {
|
|
{
|
|
.bEndpointAddress = USB_DIR_OUT | 0x01,
|
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.bmAttributes = 0x0d,
|
|
.wMaxPacketSize = USBAUDIO_PACKET_SIZE(6),
|
|
.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 */
|
|
},
|
|
},
|
|
}
|
|
},{
|
|
.bInterfaceNumber = 1,
|
|
.bAlternateSetting = ALTSET_71,
|
|
.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 */
|
|
0x08, /* 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(8),
|
|
.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_multi = {
|
|
.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_multi),
|
|
.ifs = desc_iface_multi,
|
|
}
|
|
},
|
|
};
|
|
|
|
static const USBDesc desc_audio_multi = {
|
|
.id = {
|
|
.idVendor = USBAUDIO_VENDOR_NUM,
|
|
.idProduct = USBAUDIO_PRODUCT_NUM,
|
|
.bcdDevice = 0,
|
|
.iManufacturer = STRING_MANUFACTURER,
|
|
.iProduct = STRING_PRODUCT,
|
|
.iSerialNumber = STRING_SERIALNUMBER,
|
|
},
|
|
.full = &desc_device_multi,
|
|
.str = usb_audio_stringtable,
|
|
};
|
|
|
|
/*
|
|
* 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;
|
|
size_t size;
|
|
uint64_t prod;
|
|
uint64_t cons;
|
|
};
|
|
|
|
static void streambuf_init(struct streambuf *buf, uint32_t size,
|
|
uint32_t channels)
|
|
{
|
|
g_free(buf->data);
|
|
buf->size = size - (size % USBAUDIO_PACKET_SIZE(channels));
|
|
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 channels)
|
|
{
|
|
int64_t free = buf->size - (buf->prod - buf->cons);
|
|
|
|
if (free < USBAUDIO_PACKET_SIZE(channels)) {
|
|
return 0;
|
|
}
|
|
if (p->iov.size != USBAUDIO_PACKET_SIZE(channels)) {
|
|
return 0;
|
|
}
|
|
|
|
/* can happen if prod overflows */
|
|
assert(buf->prod % USBAUDIO_PACKET_SIZE(channels) == 0);
|
|
usb_packet_copy(p, buf->data + (buf->prod % buf->size),
|
|
USBAUDIO_PACKET_SIZE(channels));
|
|
buf->prod += USBAUDIO_PACKET_SIZE(channels);
|
|
return USBAUDIO_PACKET_SIZE(channels);
|
|
}
|
|
|
|
static uint8_t *streambuf_get(struct streambuf *buf, size_t *len)
|
|
{
|
|
int64_t used = buf->prod - buf->cons;
|
|
uint8_t *data;
|
|
|
|
if (used <= 0) {
|
|
*len = 0;
|
|
return NULL;
|
|
}
|
|
data = buf->data + (buf->cons % buf->size);
|
|
*len = MIN(buf->prod - buf->cons,
|
|
buf->size - (buf->cons % buf->size));
|
|
return data;
|
|
}
|
|
|
|
struct USBAudioState {
|
|
/* qemu interfaces */
|
|
USBDevice dev;
|
|
QEMUSoundCard card;
|
|
|
|
/* state */
|
|
struct {
|
|
enum usb_audio_altset altset;
|
|
struct audsettings as;
|
|
SWVoiceOut *voice;
|
|
Volume vol;
|
|
struct streambuf buf;
|
|
uint32_t channels;
|
|
} out;
|
|
|
|
/* properties */
|
|
uint32_t debug;
|
|
uint32_t buffer_user, buffer;
|
|
bool multi;
|
|
};
|
|
|
|
#define TYPE_USB_AUDIO "usb-audio"
|
|
OBJECT_DECLARE_SIMPLE_TYPE(USBAudioState, USB_AUDIO)
|
|
|
|
static void output_callback(void *opaque, int avail)
|
|
{
|
|
USBAudioState *s = opaque;
|
|
uint8_t *data;
|
|
|
|
while (avail) {
|
|
size_t written, len;
|
|
|
|
data = streambuf_get(&s->out.buf, &len);
|
|
if (!data) {
|
|
return;
|
|
}
|
|
|
|
written = AUD_write(s->out.voice, data, len);
|
|
avail -= written;
|
|
s->out.buf.cons += written;
|
|
|
|
if (written < len) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int usb_audio_set_output_altset(USBAudioState *s, int altset)
|
|
{
|
|
switch (altset) {
|
|
case ALTSET_OFF:
|
|
AUD_set_active_out(s->out.voice, false);
|
|
break;
|
|
case ALTSET_STEREO:
|
|
case ALTSET_51:
|
|
case ALTSET_71:
|
|
if (s->out.channels != altset_channels[altset]) {
|
|
usb_audio_reinit(USB_DEVICE(s), altset_channels[altset]);
|
|
}
|
|
streambuf_init(&s->out.buf, s->buffer, s->out.channels);
|
|
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.vol.mute;
|
|
ret = 1;
|
|
break;
|
|
case ATTRIB_ID(VOLUME_CONTROL, CR_GET_CUR, 0x0200):
|
|
if (cn < USBAUDIO_MAX_CHANNELS(s)) {
|
|
uint16_t vol = (s->out.vol.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 < USBAUDIO_MAX_CHANNELS(s)) {
|
|
data[0] = 0x01;
|
|
data[1] = 0x80;
|
|
ret = 2;
|
|
}
|
|
break;
|
|
case ATTRIB_ID(VOLUME_CONTROL, CR_GET_MAX, 0x0200):
|
|
if (cn < USBAUDIO_MAX_CHANNELS(s)) {
|
|
data[0] = 0x00;
|
|
data[1] = 0x08;
|
|
ret = 2;
|
|
}
|
|
break;
|
|
case ATTRIB_ID(VOLUME_CONTROL, CR_GET_RES, 0x0200):
|
|
if (cn < USBAUDIO_MAX_CHANNELS(s)) {
|
|
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.vol.mute = data[0] & 1;
|
|
set_vol = true;
|
|
ret = 0;
|
|
break;
|
|
case ATTRIB_ID(VOLUME_CONTROL, CR_SET_CUR, 0x0200):
|
|
if (cn < USBAUDIO_MAX_CHANNELS(s)) {
|
|
uint16_t vol = data[0] + (data[1] << 8);
|
|
|
|
if (s->debug) {
|
|
fprintf(stderr, "usb-audio: cn %d vol %04x\n", cn,
|
|
(uint16_t)vol);
|
|
}
|
|
|
|
vol -= 0x8000;
|
|
vol = (vol * 255 + 0x4400) / 0x8800;
|
|
if (vol > 255) {
|
|
vol = 255;
|
|
}
|
|
|
|
s->out.vol.vol[cn] = vol;
|
|
set_vol = true;
|
|
ret = 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (set_vol) {
|
|
if (s->debug) {
|
|
int i;
|
|
fprintf(stderr, "usb-audio: mute %d", s->out.vol.mute);
|
|
for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
|
|
fprintf(stderr, ", vol[%d] %3d", i, s->out.vol.vol[i]);
|
|
}
|
|
fprintf(stderr, "\n");
|
|
}
|
|
audio_set_volume_out(s->out.voice, &s->out.vol);
|
|
}
|
|
|
|
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, s->out.channels);
|
|
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_unrealize(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);
|
|
int i;
|
|
|
|
dev->usb_desc = s->multi ? &desc_audio_multi : &desc_audio;
|
|
|
|
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.vol.mute = false;
|
|
for (i = 0; i < USBAUDIO_MAX_CHANNELS(s); ++i) {
|
|
s->out.vol.vol[i] = 240; /* 0 dB */
|
|
}
|
|
|
|
usb_audio_reinit(dev, 2);
|
|
}
|
|
|
|
static void usb_audio_reinit(USBDevice *dev, unsigned channels)
|
|
{
|
|
USBAudioState *s = USB_AUDIO(dev);
|
|
|
|
s->out.channels = channels;
|
|
if (!s->buffer_user) {
|
|
s->buffer = 32 * USBAUDIO_PACKET_SIZE(s->out.channels);
|
|
} else {
|
|
s->buffer = s->buffer_user;
|
|
}
|
|
|
|
s->out.vol.channels = s->out.channels;
|
|
s->out.as.freq = USBAUDIO_SAMPLE_RATE;
|
|
s->out.as.nchannels = s->out.channels;
|
|
s->out.as.fmt = AUDIO_FORMAT_S16;
|
|
s->out.as.endianness = 0;
|
|
streambuf_init(&s->out.buf, s->buffer, s->out.channels);
|
|
|
|
s->out.voice = AUD_open_out(&s->card, s->out.voice, TYPE_USB_AUDIO,
|
|
s, output_callback, &s->out.as);
|
|
audio_set_volume_out(s->out.voice, &s->out.vol);
|
|
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_AUDIO_PROPERTIES(USBAudioState, card),
|
|
DEFINE_PROP_UINT32("debug", USBAudioState, debug, 0),
|
|
DEFINE_PROP_UINT32("buffer", USBAudioState, buffer_user, 0),
|
|
DEFINE_PROP_BOOL("multi", USBAudioState, multi, false),
|
|
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;
|
|
device_class_set_props(dc, usb_audio_properties);
|
|
set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
|
|
k->product_desc = "QEMU USB Audio Interface";
|
|
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->unrealize = usb_audio_unrealize;
|
|
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);
|
|
}
|
|
|
|
type_init(usb_audio_register_types)
|