639 lines
19 KiB
C
639 lines
19 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
/*
|
|
* <linux/usb/audio.h> -- USB Audio definitions.
|
|
*
|
|
* Copyright (C) 2006 Thumtronics Pty Ltd.
|
|
* Developed for Thumtronics by Grey Innovation
|
|
* Ben Williamson <ben.williamson@greyinnovation.com>
|
|
*
|
|
* This software is distributed under the terms of the GNU General Public
|
|
* License ("GPL") version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This file holds USB constants and structures defined
|
|
* by the USB Device Class Definition for Audio Devices.
|
|
* Comments below reference relevant sections of that document:
|
|
*
|
|
* http://www.usb.org/developers/devclass_docs/audio10.pdf
|
|
*
|
|
* Types and defines in this file are either specific to version 1.0 of
|
|
* this standard or common for newer versions.
|
|
*/
|
|
|
|
#ifndef _UAPI__LINUX_USB_AUDIO_H
|
|
#define _UAPI__LINUX_USB_AUDIO_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
/* bInterfaceProtocol values to denote the version of the standard used */
|
|
#define UAC_VERSION_1 0x00
|
|
#define UAC_VERSION_2 0x20
|
|
#define UAC_VERSION_3 0x30
|
|
|
|
/* A.2 Audio Interface Subclass Codes */
|
|
#define USB_SUBCLASS_AUDIOCONTROL 0x01
|
|
#define USB_SUBCLASS_AUDIOSTREAMING 0x02
|
|
#define USB_SUBCLASS_MIDISTREAMING 0x03
|
|
|
|
/* A.5 Audio Class-Specific AC Interface Descriptor Subtypes */
|
|
#define UAC_HEADER 0x01
|
|
#define UAC_INPUT_TERMINAL 0x02
|
|
#define UAC_OUTPUT_TERMINAL 0x03
|
|
#define UAC_MIXER_UNIT 0x04
|
|
#define UAC_SELECTOR_UNIT 0x05
|
|
#define UAC_FEATURE_UNIT 0x06
|
|
#define UAC1_PROCESSING_UNIT 0x07
|
|
#define UAC1_EXTENSION_UNIT 0x08
|
|
|
|
/* A.6 Audio Class-Specific AS Interface Descriptor Subtypes */
|
|
#define UAC_AS_GENERAL 0x01
|
|
#define UAC_FORMAT_TYPE 0x02
|
|
#define UAC_FORMAT_SPECIFIC 0x03
|
|
|
|
/* A.7 Processing Unit Process Types */
|
|
#define UAC_PROCESS_UNDEFINED 0x00
|
|
#define UAC_PROCESS_UP_DOWNMIX 0x01
|
|
#define UAC_PROCESS_DOLBY_PROLOGIC 0x02
|
|
#define UAC_PROCESS_STEREO_EXTENDER 0x03
|
|
#define UAC_PROCESS_REVERB 0x04
|
|
#define UAC_PROCESS_CHORUS 0x05
|
|
#define UAC_PROCESS_DYN_RANGE_COMP 0x06
|
|
|
|
/* A.8 Audio Class-Specific Endpoint Descriptor Subtypes */
|
|
#define UAC_EP_GENERAL 0x01
|
|
|
|
/* A.9 Audio Class-Specific Request Codes */
|
|
#define UAC_SET_ 0x00
|
|
#define UAC_GET_ 0x80
|
|
|
|
#define UAC__CUR 0x1
|
|
#define UAC__MIN 0x2
|
|
#define UAC__MAX 0x3
|
|
#define UAC__RES 0x4
|
|
#define UAC__MEM 0x5
|
|
|
|
#define UAC_SET_CUR (UAC_SET_ | UAC__CUR)
|
|
#define UAC_GET_CUR (UAC_GET_ | UAC__CUR)
|
|
#define UAC_SET_MIN (UAC_SET_ | UAC__MIN)
|
|
#define UAC_GET_MIN (UAC_GET_ | UAC__MIN)
|
|
#define UAC_SET_MAX (UAC_SET_ | UAC__MAX)
|
|
#define UAC_GET_MAX (UAC_GET_ | UAC__MAX)
|
|
#define UAC_SET_RES (UAC_SET_ | UAC__RES)
|
|
#define UAC_GET_RES (UAC_GET_ | UAC__RES)
|
|
#define UAC_SET_MEM (UAC_SET_ | UAC__MEM)
|
|
#define UAC_GET_MEM (UAC_GET_ | UAC__MEM)
|
|
|
|
#define UAC_GET_STAT 0xff
|
|
|
|
/* A.10 Control Selector Codes */
|
|
|
|
/* A.10.1 Terminal Control Selectors */
|
|
#define UAC_TERM_COPY_PROTECT 0x01
|
|
|
|
/* A.10.2 Feature Unit Control Selectors */
|
|
#define UAC_FU_MUTE 0x01
|
|
#define UAC_FU_VOLUME 0x02
|
|
#define UAC_FU_BASS 0x03
|
|
#define UAC_FU_MID 0x04
|
|
#define UAC_FU_TREBLE 0x05
|
|
#define UAC_FU_GRAPHIC_EQUALIZER 0x06
|
|
#define UAC_FU_AUTOMATIC_GAIN 0x07
|
|
#define UAC_FU_DELAY 0x08
|
|
#define UAC_FU_BASS_BOOST 0x09
|
|
#define UAC_FU_LOUDNESS 0x0a
|
|
|
|
#define UAC_CONTROL_BIT(CS) (1 << ((CS) - 1))
|
|
|
|
/* A.10.3.1 Up/Down-mix Processing Unit Controls Selectors */
|
|
#define UAC_UD_ENABLE 0x01
|
|
#define UAC_UD_MODE_SELECT 0x02
|
|
|
|
/* A.10.3.2 Dolby Prologic (tm) Processing Unit Controls Selectors */
|
|
#define UAC_DP_ENABLE 0x01
|
|
#define UAC_DP_MODE_SELECT 0x02
|
|
|
|
/* A.10.3.3 3D Stereo Extender Processing Unit Control Selectors */
|
|
#define UAC_3D_ENABLE 0x01
|
|
#define UAC_3D_SPACE 0x02
|
|
|
|
/* A.10.3.4 Reverberation Processing Unit Control Selectors */
|
|
#define UAC_REVERB_ENABLE 0x01
|
|
#define UAC_REVERB_LEVEL 0x02
|
|
#define UAC_REVERB_TIME 0x03
|
|
#define UAC_REVERB_FEEDBACK 0x04
|
|
|
|
/* A.10.3.5 Chorus Processing Unit Control Selectors */
|
|
#define UAC_CHORUS_ENABLE 0x01
|
|
#define UAC_CHORUS_LEVEL 0x02
|
|
#define UAC_CHORUS_RATE 0x03
|
|
#define UAC_CHORUS_DEPTH 0x04
|
|
|
|
/* A.10.3.6 Dynamic Range Compressor Unit Control Selectors */
|
|
#define UAC_DCR_ENABLE 0x01
|
|
#define UAC_DCR_RATE 0x02
|
|
#define UAC_DCR_MAXAMPL 0x03
|
|
#define UAC_DCR_THRESHOLD 0x04
|
|
#define UAC_DCR_ATTACK_TIME 0x05
|
|
#define UAC_DCR_RELEASE_TIME 0x06
|
|
|
|
/* A.10.4 Extension Unit Control Selectors */
|
|
#define UAC_XU_ENABLE 0x01
|
|
|
|
/* MIDI - A.1 MS Class-Specific Interface Descriptor Subtypes */
|
|
#define UAC_MS_HEADER 0x01
|
|
#define UAC_MIDI_IN_JACK 0x02
|
|
#define UAC_MIDI_OUT_JACK 0x03
|
|
|
|
/* MIDI - A.1 MS Class-Specific Endpoint Descriptor Subtypes */
|
|
#define UAC_MS_GENERAL 0x01
|
|
|
|
/* Terminals - 2.1 USB Terminal Types */
|
|
#define UAC_TERMINAL_UNDEFINED 0x100
|
|
#define UAC_TERMINAL_STREAMING 0x101
|
|
#define UAC_TERMINAL_VENDOR_SPEC 0x1FF
|
|
|
|
/* Terminal Control Selectors */
|
|
/* 4.3.2 Class-Specific AC Interface Descriptor */
|
|
struct uac1_ac_header_descriptor {
|
|
__u8 bLength; /* 8 + n */
|
|
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
|
|
__u8 bDescriptorSubtype; /* UAC_MS_HEADER */
|
|
__le16 bcdADC; /* 0x0100 */
|
|
__le16 wTotalLength; /* includes Unit and Terminal desc. */
|
|
__u8 bInCollection; /* n */
|
|
__u8 baInterfaceNr[]; /* [n] */
|
|
} __attribute__ ((packed));
|
|
|
|
#define UAC_DT_AC_HEADER_SIZE(n) (8 + (n))
|
|
|
|
/* As above, but more useful for defining your own descriptors: */
|
|
#define DECLARE_UAC_AC_HEADER_DESCRIPTOR(n) \
|
|
struct uac1_ac_header_descriptor_##n { \
|
|
__u8 bLength; \
|
|
__u8 bDescriptorType; \
|
|
__u8 bDescriptorSubtype; \
|
|
__le16 bcdADC; \
|
|
__le16 wTotalLength; \
|
|
__u8 bInCollection; \
|
|
__u8 baInterfaceNr[n]; \
|
|
} __attribute__ ((packed))
|
|
|
|
/* 4.3.2.1 Input Terminal Descriptor */
|
|
struct uac_input_terminal_descriptor {
|
|
__u8 bLength; /* in bytes: 12 */
|
|
__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
|
|
__u8 bDescriptorSubtype; /* INPUT_TERMINAL descriptor subtype */
|
|
__u8 bTerminalID; /* Constant uniquely terminal ID */
|
|
__le16 wTerminalType; /* USB Audio Terminal Types */
|
|
__u8 bAssocTerminal; /* ID of the Output Terminal associated */
|
|
__u8 bNrChannels; /* Number of logical output channels */
|
|
__le16 wChannelConfig;
|
|
__u8 iChannelNames;
|
|
__u8 iTerminal;
|
|
} __attribute__ ((packed));
|
|
|
|
#define UAC_DT_INPUT_TERMINAL_SIZE 12
|
|
|
|
/* Terminals - 2.2 Input Terminal Types */
|
|
#define UAC_INPUT_TERMINAL_UNDEFINED 0x200
|
|
#define UAC_INPUT_TERMINAL_MICROPHONE 0x201
|
|
#define UAC_INPUT_TERMINAL_DESKTOP_MICROPHONE 0x202
|
|
#define UAC_INPUT_TERMINAL_PERSONAL_MICROPHONE 0x203
|
|
#define UAC_INPUT_TERMINAL_OMNI_DIR_MICROPHONE 0x204
|
|
#define UAC_INPUT_TERMINAL_MICROPHONE_ARRAY 0x205
|
|
#define UAC_INPUT_TERMINAL_PROC_MICROPHONE_ARRAY 0x206
|
|
|
|
/* Terminals - control selectors */
|
|
|
|
#define UAC_TERMINAL_CS_COPY_PROTECT_CONTROL 0x01
|
|
|
|
/* 4.3.2.2 Output Terminal Descriptor */
|
|
struct uac1_output_terminal_descriptor {
|
|
__u8 bLength; /* in bytes: 9 */
|
|
__u8 bDescriptorType; /* CS_INTERFACE descriptor type */
|
|
__u8 bDescriptorSubtype; /* OUTPUT_TERMINAL descriptor subtype */
|
|
__u8 bTerminalID; /* Constant uniquely terminal ID */
|
|
__le16 wTerminalType; /* USB Audio Terminal Types */
|
|
__u8 bAssocTerminal; /* ID of the Input Terminal associated */
|
|
__u8 bSourceID; /* ID of the connected Unit or Terminal*/
|
|
__u8 iTerminal;
|
|
} __attribute__ ((packed));
|
|
|
|
#define UAC_DT_OUTPUT_TERMINAL_SIZE 9
|
|
|
|
/* Terminals - 2.3 Output Terminal Types */
|
|
#define UAC_OUTPUT_TERMINAL_UNDEFINED 0x300
|
|
#define UAC_OUTPUT_TERMINAL_SPEAKER 0x301
|
|
#define UAC_OUTPUT_TERMINAL_HEADPHONES 0x302
|
|
#define UAC_OUTPUT_TERMINAL_HEAD_MOUNTED_DISPLAY_AUDIO 0x303
|
|
#define UAC_OUTPUT_TERMINAL_DESKTOP_SPEAKER 0x304
|
|
#define UAC_OUTPUT_TERMINAL_ROOM_SPEAKER 0x305
|
|
#define UAC_OUTPUT_TERMINAL_COMMUNICATION_SPEAKER 0x306
|
|
#define UAC_OUTPUT_TERMINAL_LOW_FREQ_EFFECTS_SPEAKER 0x307
|
|
|
|
/* Terminals - 2.4 Bi-directional Terminal Types */
|
|
#define UAC_BIDIR_TERMINAL_UNDEFINED 0x400
|
|
#define UAC_BIDIR_TERMINAL_HANDSET 0x401
|
|
#define UAC_BIDIR_TERMINAL_HEADSET 0x402
|
|
#define UAC_BIDIR_TERMINAL_SPEAKER_PHONE 0x403
|
|
#define UAC_BIDIR_TERMINAL_ECHO_SUPPRESSING 0x404
|
|
#define UAC_BIDIR_TERMINAL_ECHO_CANCELING 0x405
|
|
|
|
/* Set bControlSize = 2 as default setting */
|
|
#define UAC_DT_FEATURE_UNIT_SIZE(ch) (7 + ((ch) + 1) * 2)
|
|
|
|
/* As above, but more useful for defining your own descriptors: */
|
|
#define DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(ch) \
|
|
struct uac_feature_unit_descriptor_##ch { \
|
|
__u8 bLength; \
|
|
__u8 bDescriptorType; \
|
|
__u8 bDescriptorSubtype; \
|
|
__u8 bUnitID; \
|
|
__u8 bSourceID; \
|
|
__u8 bControlSize; \
|
|
__le16 bmaControls[ch + 1]; \
|
|
__u8 iFeature; \
|
|
} __attribute__ ((packed))
|
|
|
|
/* 4.3.2.3 Mixer Unit Descriptor */
|
|
struct uac_mixer_unit_descriptor {
|
|
__u8 bLength;
|
|
__u8 bDescriptorType;
|
|
__u8 bDescriptorSubtype;
|
|
__u8 bUnitID;
|
|
__u8 bNrInPins;
|
|
__u8 baSourceID[];
|
|
} __attribute__ ((packed));
|
|
|
|
static inline __u8 uac_mixer_unit_bNrChannels(struct uac_mixer_unit_descriptor *desc)
|
|
{
|
|
return desc->baSourceID[desc->bNrInPins];
|
|
}
|
|
|
|
static inline __u32 uac_mixer_unit_wChannelConfig(struct uac_mixer_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
if (protocol == UAC_VERSION_1)
|
|
return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
|
|
desc->baSourceID[desc->bNrInPins + 1];
|
|
else
|
|
return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
|
|
(desc->baSourceID[desc->bNrInPins + 3] << 16) |
|
|
(desc->baSourceID[desc->bNrInPins + 2] << 8) |
|
|
(desc->baSourceID[desc->bNrInPins + 1]);
|
|
}
|
|
|
|
static inline __u8 uac_mixer_unit_iChannelNames(struct uac_mixer_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
return (protocol == UAC_VERSION_1) ?
|
|
desc->baSourceID[desc->bNrInPins + 3] :
|
|
desc->baSourceID[desc->bNrInPins + 5];
|
|
}
|
|
|
|
static inline __u8 *uac_mixer_unit_bmControls(struct uac_mixer_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
switch (protocol) {
|
|
case UAC_VERSION_1:
|
|
return &desc->baSourceID[desc->bNrInPins + 4];
|
|
case UAC_VERSION_2:
|
|
return &desc->baSourceID[desc->bNrInPins + 6];
|
|
case UAC_VERSION_3:
|
|
return &desc->baSourceID[desc->bNrInPins + 2];
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static inline __u16 uac3_mixer_unit_wClusterDescrID(struct uac_mixer_unit_descriptor *desc)
|
|
{
|
|
return (desc->baSourceID[desc->bNrInPins + 1] << 8) |
|
|
desc->baSourceID[desc->bNrInPins];
|
|
}
|
|
|
|
static inline __u8 uac_mixer_unit_iMixer(struct uac_mixer_unit_descriptor *desc)
|
|
{
|
|
__u8 *raw = (__u8 *) desc;
|
|
return raw[desc->bLength - 1];
|
|
}
|
|
|
|
/* 4.3.2.4 Selector Unit Descriptor */
|
|
struct uac_selector_unit_descriptor {
|
|
__u8 bLength;
|
|
__u8 bDescriptorType;
|
|
__u8 bDescriptorSubtype;
|
|
__u8 bUintID;
|
|
__u8 bNrInPins;
|
|
__u8 baSourceID[];
|
|
} __attribute__ ((packed));
|
|
|
|
static inline __u8 uac_selector_unit_iSelector(struct uac_selector_unit_descriptor *desc)
|
|
{
|
|
__u8 *raw = (__u8 *) desc;
|
|
return raw[desc->bLength - 1];
|
|
}
|
|
|
|
/* 4.3.2.5 Feature Unit Descriptor */
|
|
struct uac_feature_unit_descriptor {
|
|
__u8 bLength;
|
|
__u8 bDescriptorType;
|
|
__u8 bDescriptorSubtype;
|
|
__u8 bUnitID;
|
|
__u8 bSourceID;
|
|
__u8 bControlSize;
|
|
__u8 bmaControls[0]; /* variable length */
|
|
} __attribute__((packed));
|
|
|
|
static inline __u8 uac_feature_unit_iFeature(struct uac_feature_unit_descriptor *desc)
|
|
{
|
|
__u8 *raw = (__u8 *) desc;
|
|
return raw[desc->bLength - 1];
|
|
}
|
|
|
|
/* 4.3.2.6 Processing Unit Descriptors */
|
|
struct uac_processing_unit_descriptor {
|
|
__u8 bLength;
|
|
__u8 bDescriptorType;
|
|
__u8 bDescriptorSubtype;
|
|
__u8 bUnitID;
|
|
__le16 wProcessType;
|
|
__u8 bNrInPins;
|
|
__u8 baSourceID[];
|
|
} __attribute__ ((packed));
|
|
|
|
static inline __u8 uac_processing_unit_bNrChannels(struct uac_processing_unit_descriptor *desc)
|
|
{
|
|
return desc->baSourceID[desc->bNrInPins];
|
|
}
|
|
|
|
static inline __u32 uac_processing_unit_wChannelConfig(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
if (protocol == UAC_VERSION_1)
|
|
return (desc->baSourceID[desc->bNrInPins + 2] << 8) |
|
|
desc->baSourceID[desc->bNrInPins + 1];
|
|
else
|
|
return (desc->baSourceID[desc->bNrInPins + 4] << 24) |
|
|
(desc->baSourceID[desc->bNrInPins + 3] << 16) |
|
|
(desc->baSourceID[desc->bNrInPins + 2] << 8) |
|
|
(desc->baSourceID[desc->bNrInPins + 1]);
|
|
}
|
|
|
|
static inline __u8 uac_processing_unit_iChannelNames(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
return (protocol == UAC_VERSION_1) ?
|
|
desc->baSourceID[desc->bNrInPins + 3] :
|
|
desc->baSourceID[desc->bNrInPins + 5];
|
|
}
|
|
|
|
static inline __u8 uac_processing_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
switch (protocol) {
|
|
case UAC_VERSION_1:
|
|
return desc->baSourceID[desc->bNrInPins + 4];
|
|
case UAC_VERSION_2:
|
|
return 2; /* in UAC2, this value is constant */
|
|
case UAC_VERSION_3:
|
|
return 4; /* in UAC3, this value is constant */
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static inline __u8 *uac_processing_unit_bmControls(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
switch (protocol) {
|
|
case UAC_VERSION_1:
|
|
return &desc->baSourceID[desc->bNrInPins + 5];
|
|
case UAC_VERSION_2:
|
|
return &desc->baSourceID[desc->bNrInPins + 6];
|
|
case UAC_VERSION_3:
|
|
return &desc->baSourceID[desc->bNrInPins + 2];
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static inline __u8 uac_processing_unit_iProcessing(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
|
|
|
|
switch (protocol) {
|
|
case UAC_VERSION_1:
|
|
case UAC_VERSION_2:
|
|
default:
|
|
return *(uac_processing_unit_bmControls(desc, protocol)
|
|
+ control_size);
|
|
case UAC_VERSION_3:
|
|
return 0; /* UAC3 does not have this field */
|
|
}
|
|
}
|
|
|
|
static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
__u8 control_size = uac_processing_unit_bControlSize(desc, protocol);
|
|
|
|
switch (protocol) {
|
|
case UAC_VERSION_1:
|
|
case UAC_VERSION_2:
|
|
default:
|
|
return uac_processing_unit_bmControls(desc, protocol)
|
|
+ control_size + 1;
|
|
case UAC_VERSION_3:
|
|
return uac_processing_unit_bmControls(desc, protocol)
|
|
+ control_size;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Extension Unit (XU) has almost compatible layout with Processing Unit, but
|
|
* on UAC2, it has a different bmControls size (bControlSize); it's 1 byte for
|
|
* XU while 2 bytes for PU. The last iExtension field is a one-byte index as
|
|
* well as iProcessing field of PU.
|
|
*/
|
|
static inline __u8 uac_extension_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
switch (protocol) {
|
|
case UAC_VERSION_1:
|
|
return desc->baSourceID[desc->bNrInPins + 4];
|
|
case UAC_VERSION_2:
|
|
return 1; /* in UAC2, this value is constant */
|
|
case UAC_VERSION_3:
|
|
return 4; /* in UAC3, this value is constant */
|
|
default:
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static inline __u8 uac_extension_unit_iExtension(struct uac_processing_unit_descriptor *desc,
|
|
int protocol)
|
|
{
|
|
__u8 control_size = uac_extension_unit_bControlSize(desc, protocol);
|
|
|
|
switch (protocol) {
|
|
case UAC_VERSION_1:
|
|
case UAC_VERSION_2:
|
|
default:
|
|
return *(uac_processing_unit_bmControls(desc, protocol)
|
|
+ control_size);
|
|
case UAC_VERSION_3:
|
|
return 0; /* UAC3 does not have this field */
|
|
}
|
|
}
|
|
|
|
/* 4.5.2 Class-Specific AS Interface Descriptor */
|
|
struct uac1_as_header_descriptor {
|
|
__u8 bLength; /* in bytes: 7 */
|
|
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
|
|
__u8 bDescriptorSubtype; /* AS_GENERAL */
|
|
__u8 bTerminalLink; /* Terminal ID of connected Terminal */
|
|
__u8 bDelay; /* Delay introduced by the data path */
|
|
__le16 wFormatTag; /* The Audio Data Format */
|
|
} __attribute__ ((packed));
|
|
|
|
#define UAC_DT_AS_HEADER_SIZE 7
|
|
|
|
/* Formats - A.1.1 Audio Data Format Type I Codes */
|
|
#define UAC_FORMAT_TYPE_I_UNDEFINED 0x0
|
|
#define UAC_FORMAT_TYPE_I_PCM 0x1
|
|
#define UAC_FORMAT_TYPE_I_PCM8 0x2
|
|
#define UAC_FORMAT_TYPE_I_IEEE_FLOAT 0x3
|
|
#define UAC_FORMAT_TYPE_I_ALAW 0x4
|
|
#define UAC_FORMAT_TYPE_I_MULAW 0x5
|
|
|
|
struct uac_format_type_i_continuous_descriptor {
|
|
__u8 bLength; /* in bytes: 8 + (ns * 3) */
|
|
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
|
|
__u8 bDescriptorSubtype; /* FORMAT_TYPE */
|
|
__u8 bFormatType; /* FORMAT_TYPE_1 */
|
|
__u8 bNrChannels; /* physical channels in the stream */
|
|
__u8 bSubframeSize; /* */
|
|
__u8 bBitResolution;
|
|
__u8 bSamFreqType;
|
|
__u8 tLowerSamFreq[3];
|
|
__u8 tUpperSamFreq[3];
|
|
} __attribute__ ((packed));
|
|
|
|
#define UAC_FORMAT_TYPE_I_CONTINUOUS_DESC_SIZE 14
|
|
|
|
struct uac_format_type_i_discrete_descriptor {
|
|
__u8 bLength; /* in bytes: 8 + (ns * 3) */
|
|
__u8 bDescriptorType; /* USB_DT_CS_INTERFACE */
|
|
__u8 bDescriptorSubtype; /* FORMAT_TYPE */
|
|
__u8 bFormatType; /* FORMAT_TYPE_1 */
|
|
__u8 bNrChannels; /* physical channels in the stream */
|
|
__u8 bSubframeSize; /* */
|
|
__u8 bBitResolution;
|
|
__u8 bSamFreqType;
|
|
__u8 tSamFreq[][3];
|
|
} __attribute__ ((packed));
|
|
|
|
#define DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(n) \
|
|
struct uac_format_type_i_discrete_descriptor_##n { \
|
|
__u8 bLength; \
|
|
__u8 bDescriptorType; \
|
|
__u8 bDescriptorSubtype; \
|
|
__u8 bFormatType; \
|
|
__u8 bNrChannels; \
|
|
__u8 bSubframeSize; \
|
|
__u8 bBitResolution; \
|
|
__u8 bSamFreqType; \
|
|
__u8 tSamFreq[n][3]; \
|
|
} __attribute__ ((packed))
|
|
|
|
#define UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(n) (8 + (n * 3))
|
|
|
|
struct uac_format_type_i_ext_descriptor {
|
|
__u8 bLength;
|
|
__u8 bDescriptorType;
|
|
__u8 bDescriptorSubtype;
|
|
__u8 bFormatType;
|
|
__u8 bSubslotSize;
|
|
__u8 bBitResolution;
|
|
__u8 bHeaderLength;
|
|
__u8 bControlSize;
|
|
__u8 bSideBandProtocol;
|
|
} __attribute__((packed));
|
|
|
|
/* Formats - Audio Data Format Type I Codes */
|
|
|
|
#define UAC_FORMAT_TYPE_II_MPEG 0x1001
|
|
#define UAC_FORMAT_TYPE_II_AC3 0x1002
|
|
|
|
struct uac_format_type_ii_discrete_descriptor {
|
|
__u8 bLength;
|
|
__u8 bDescriptorType;
|
|
__u8 bDescriptorSubtype;
|
|
__u8 bFormatType;
|
|
__le16 wMaxBitRate;
|
|
__le16 wSamplesPerFrame;
|
|
__u8 bSamFreqType;
|
|
__u8 tSamFreq[][3];
|
|
} __attribute__((packed));
|
|
|
|
struct uac_format_type_ii_ext_descriptor {
|
|
__u8 bLength;
|
|
__u8 bDescriptorType;
|
|
__u8 bDescriptorSubtype;
|
|
__u8 bFormatType;
|
|
__le16 wMaxBitRate;
|
|
__le16 wSamplesPerFrame;
|
|
__u8 bHeaderLength;
|
|
__u8 bSideBandProtocol;
|
|
} __attribute__((packed));
|
|
|
|
/* type III */
|
|
#define UAC_FORMAT_TYPE_III_IEC1937_AC3 0x2001
|
|
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG1_LAYER1 0x2002
|
|
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_NOEXT 0x2003
|
|
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_EXT 0x2004
|
|
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER1_LS 0x2005
|
|
#define UAC_FORMAT_TYPE_III_IEC1937_MPEG2_LAYER23_LS 0x2006
|
|
|
|
/* Formats - A.2 Format Type Codes */
|
|
#define UAC_FORMAT_TYPE_UNDEFINED 0x0
|
|
#define UAC_FORMAT_TYPE_I 0x1
|
|
#define UAC_FORMAT_TYPE_II 0x2
|
|
#define UAC_FORMAT_TYPE_III 0x3
|
|
#define UAC_EXT_FORMAT_TYPE_I 0x81
|
|
#define UAC_EXT_FORMAT_TYPE_II 0x82
|
|
#define UAC_EXT_FORMAT_TYPE_III 0x83
|
|
|
|
struct uac_iso_endpoint_descriptor {
|
|
__u8 bLength; /* in bytes: 7 */
|
|
__u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */
|
|
__u8 bDescriptorSubtype; /* EP_GENERAL */
|
|
__u8 bmAttributes;
|
|
__u8 bLockDelayUnits;
|
|
__le16 wLockDelay;
|
|
} __attribute__((packed));
|
|
#define UAC_ISO_ENDPOINT_DESC_SIZE 7
|
|
|
|
#define UAC_EP_CS_ATTR_SAMPLE_RATE 0x01
|
|
#define UAC_EP_CS_ATTR_PITCH_CONTROL 0x02
|
|
#define UAC_EP_CS_ATTR_FILL_MAX 0x80
|
|
|
|
/* status word format (3.7.1.1) */
|
|
|
|
#define UAC1_STATUS_TYPE_ORIG_MASK 0x0f
|
|
#define UAC1_STATUS_TYPE_ORIG_AUDIO_CONTROL_IF 0x0
|
|
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_IF 0x1
|
|
#define UAC1_STATUS_TYPE_ORIG_AUDIO_STREAM_EP 0x2
|
|
|
|
#define UAC1_STATUS_TYPE_IRQ_PENDING (1 << 7)
|
|
#define UAC1_STATUS_TYPE_MEM_CHANGED (1 << 6)
|
|
|
|
struct uac1_status_word {
|
|
__u8 bStatusType;
|
|
__u8 bOriginator;
|
|
} __attribute__((packed));
|
|
|
|
|
|
#endif /* _UAPI__LINUX_USB_AUDIO_H */
|