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/
usr/
src/
linux-headers-3.0.0-14/
include/
linux/
usb/
- drwxr-xr-x
|
Viewing file:  audio-v2.h (12.39 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
/*
* Copyright (c) 2010 Daniel Mack <daniel@caiaq.de>
*
* 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 in version 2.0.
* Comments below reference relevant sections of the documents contained
* in http://www.usb.org/developers/devclass_docs/Audio2.0_final.zip
*/
#ifndef __LINUX_USB_AUDIO_V2_H
#define __LINUX_USB_AUDIO_V2_H
#include <linux/types.h>
/* v1.0 and v2.0 of this standard have many things in common. For the rest
* of the definitions, please refer to audio.h */
/*
* bmControl field decoders
*
* From the USB Audio spec v2.0:
*
* bmaControls() is a (ch+1)-element array of 4-byte bitmaps,
* each containing a set of bit pairs. If a Control is present,
* it must be Host readable. If a certain Control is not
* present then the bit pair must be set to 0b00.
* If a Control is present but read-only, the bit pair must be
* set to 0b01. If a Control is also Host programmable, the bit
* pair must be set to 0b11. The value 0b10 is not allowed.
*
*/
static inline bool uac2_control_is_readable(u32 bmControls, u8 control)
{
return (bmControls >> (control * 2)) & 0x1;
}
static inline bool uac2_control_is_writeable(u32 bmControls, u8 control)
{
return (bmControls >> (control * 2)) & 0x2;
}
/* 4.7.2.1 Clock Source Descriptor */
struct uac_clock_source_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bClockID;
__u8 bmAttributes;
__u8 bmControls;
__u8 bAssocTerminal;
__u8 iClockSource;
} __attribute__((packed));
/* bmAttribute fields */
#define UAC_CLOCK_SOURCE_TYPE_EXT 0x0
#define UAC_CLOCK_SOURCE_TYPE_INT_FIXED 0x1
#define UAC_CLOCK_SOURCE_TYPE_INT_VAR 0x2
#define UAC_CLOCK_SOURCE_TYPE_INT_PROG 0x3
#define UAC_CLOCK_SOURCE_SYNCED_TO_SOF (1 << 2)
/* 4.7.2.2 Clock Source Descriptor */
struct uac_clock_selector_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bClockID;
__u8 bNrInPins;
__u8 baCSourceID[];
/* bmControls, bAssocTerminal and iClockSource omitted */
} __attribute__((packed));
/* 4.7.2.3 Clock Multiplier Descriptor */
struct uac_clock_multiplier_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bClockID;
__u8 bCSourceID;
__u8 bmControls;
__u8 iClockMultiplier;
} __attribute__((packed));
/* 4.7.2.4 Input terminal descriptor */
struct uac2_input_terminal_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bTerminalID;
__u16 wTerminalType;
__u8 bAssocTerminal;
__u8 bCSourceID;
__u8 bNrChannels;
__u32 bmChannelConfig;
__u8 iChannelNames;
__u16 bmControls;
__u8 iTerminal;
} __attribute__((packed));
/* 4.7.2.5 Output terminal descriptor */
struct uac2_output_terminal_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bTerminalID;
__u16 wTerminalType;
__u8 bAssocTerminal;
__u8 bSourceID;
__u8 bCSourceID;
__u16 bmControls;
__u8 iTerminal;
} __attribute__((packed));
/* 4.7.2.8 Feature Unit Descriptor */
struct uac2_feature_unit_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bUnitID;
__u8 bSourceID;
/* bmaControls is actually u32,
* but u8 is needed for the hybrid parser */
__u8 bmaControls[0]; /* variable length */
} __attribute__((packed));
/* 4.9.2 Class-Specific AS Interface Descriptor */
struct uac2_as_header_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__u8 bDescriptorSubtype;
__u8 bTerminalLink;
__u8 bmControls;
__u8 bFormatType;
__u32 bmFormats;
__u8 bNrChannels;
__u32 bmChannelConfig;
__u8 iChannelNames;
} __attribute__((packed));
/* 4.10.1.2 Class-Specific AS Isochronous Audio Data Endpoint Descriptor */
struct uac2_iso_endpoint_descriptor {
__u8 bLength; /* in bytes: 8 */
__u8 bDescriptorType; /* USB_DT_CS_ENDPOINT */
__u8 bDescriptorSubtype; /* EP_GENERAL */
__u8 bmAttributes;
__u8 bmControls;
__u8 bLockDelayUnits;
__le16 wLockDelay;
} __attribute__((packed));
#define UAC2_CONTROL_PITCH (3 << 0)
#define UAC2_CONTROL_DATA_OVERRUN (3 << 2)
#define UAC2_CONTROL_DATA_UNDERRUN (3 << 4)
/* 6.1 Interrupt Data Message */
#define UAC2_INTERRUPT_DATA_MSG_VENDOR (1 << 0)
#define UAC2_INTERRUPT_DATA_MSG_EP (1 << 1)
struct uac2_interrupt_data_msg {
__u8 bInfo;
__u8 bAttribute;
__le16 wValue;
__le16 wIndex;
} __attribute__((packed));
/* A.7 Audio Function Category Codes */
#define UAC2_FUNCTION_SUBCLASS_UNDEFINED 0x00
#define UAC2_FUNCTION_DESKTOP_SPEAKER 0x01
#define UAC2_FUNCTION_HOME_THEATER 0x02
#define UAC2_FUNCTION_MICROPHONE 0x03
#define UAC2_FUNCTION_HEADSET 0x04
#define UAC2_FUNCTION_TELEPHONE 0x05
#define UAC2_FUNCTION_CONVERTER 0x06
#define UAC2_FUNCTION_SOUND_RECORDER 0x07
#define UAC2_FUNCTION_IO_BOX 0x08
#define UAC2_FUNCTION_MUSICAL_INSTRUMENT 0x09
#define UAC2_FUNCTION_PRO_AUDIO 0x0a
#define UAC2_FUNCTION_AUDIO_VIDEO 0x0b
#define UAC2_FUNCTION_CONTROL_PANEL 0x0c
#define UAC2_FUNCTION_OTHER 0xff
/* A.9 Audio Class-Specific AC Interface Descriptor Subtypes */
/* see audio.h for the rest, which is identical to v1 */
#define UAC2_EFFECT_UNIT 0x07
#define UAC2_PROCESSING_UNIT_V2 0x08
#define UAC2_EXTENSION_UNIT_V2 0x09
#define UAC2_CLOCK_SOURCE 0x0a
#define UAC2_CLOCK_SELECTOR 0x0b
#define UAC2_CLOCK_MULTIPLIER 0x0c
#define UAC2_SAMPLE_RATE_CONVERTER 0x0d
/* A.10 Audio Class-Specific AS Interface Descriptor Subtypes */
/* see audio.h for the rest, which is identical to v1 */
#define UAC2_ENCODER 0x03
#define UAC2_DECODER 0x04
/* A.11 Effect Unit Effect Types */
#define UAC2_EFFECT_UNDEFINED 0x00
#define UAC2_EFFECT_PARAM_EQ 0x01
#define UAC2_EFFECT_REVERB 0x02
#define UAC2_EFFECT_MOD_DELAY 0x03
#define UAC2_EFFECT_DYN_RANGE_COMP 0x04
/* A.12 Processing Unit Process Types */
#define UAC2_PROCESS_UNDEFINED 0x00
#define UAC2_PROCESS_UP_DOWNMIX 0x01
#define UAC2_PROCESS_DOLBY_PROLOCIC 0x02
#define UAC2_PROCESS_STEREO_EXTENDER 0x03
/* A.14 Audio Class-Specific Request Codes */
#define UAC2_CS_CUR 0x01
#define UAC2_CS_RANGE 0x02
#define UAC2_CS_MEM 0x03
/* A.15 Encoder Type Codes */
#define UAC2_ENCODER_UNDEFINED 0x00
#define UAC2_ENCODER_OTHER 0x01
#define UAC2_ENCODER_MPEG 0x02
#define UAC2_ENCODER_AC3 0x03
#define UAC2_ENCODER_WMA 0x04
#define UAC2_ENCODER_DTS 0x05
/* A.16 Decoder Type Codes */
#define UAC2_DECODER_UNDEFINED 0x00
#define UAC2_DECODER_OTHER 0x01
#define UAC2_DECODER_MPEG 0x02
#define UAC2_DECODER_AC3 0x03
#define UAC2_DECODER_WMA 0x04
#define UAC2_DECODER_DTS 0x05
/* A.17.1 Clock Source Control Selectors */
#define UAC2_CS_UNDEFINED 0x00
#define UAC2_CS_CONTROL_SAM_FREQ 0x01
#define UAC2_CS_CONTROL_CLOCK_VALID 0x02
/* A.17.2 Clock Selector Control Selectors */
#define UAC2_CX_UNDEFINED 0x00
#define UAC2_CX_CLOCK_SELECTOR 0x01
/* A.17.3 Clock Multiplier Control Selectors */
#define UAC2_CM_UNDEFINED 0x00
#define UAC2_CM_NUMERATOR 0x01
#define UAC2_CM_DENOMINTATOR 0x02
/* A.17.4 Terminal Control Selectors */
#define UAC2_TE_UNDEFINED 0x00
#define UAC2_TE_COPY_PROTECT 0x01
#define UAC2_TE_CONNECTOR 0x02
#define UAC2_TE_OVERLOAD 0x03
#define UAC2_TE_CLUSTER 0x04
#define UAC2_TE_UNDERFLOW 0x05
#define UAC2_TE_OVERFLOW 0x06
#define UAC2_TE_LATENCY 0x07
/* A.17.5 Mixer Control Selectors */
#define UAC2_MU_UNDEFINED 0x00
#define UAC2_MU_MIXER 0x01
#define UAC2_MU_CLUSTER 0x02
#define UAC2_MU_UNDERFLOW 0x03
#define UAC2_MU_OVERFLOW 0x04
#define UAC2_MU_LATENCY 0x05
/* A.17.6 Selector Control Selectors */
#define UAC2_SU_UNDEFINED 0x00
#define UAC2_SU_SELECTOR 0x01
#define UAC2_SU_LATENCY 0x02
/* A.17.7 Feature Unit Control Selectors */
/* see audio.h for the rest, which is identical to v1 */
#define UAC2_FU_INPUT_GAIN 0x0b
#define UAC2_FU_INPUT_GAIN_PAD 0x0c
#define UAC2_FU_PHASE_INVERTER 0x0d
#define UAC2_FU_UNDERFLOW 0x0e
#define UAC2_FU_OVERFLOW 0x0f
#define UAC2_FU_LATENCY 0x10
/* A.17.8.1 Parametric Equalizer Section Effect Unit Control Selectors */
#define UAC2_PE_UNDEFINED 0x00
#define UAC2_PE_ENABLE 0x01
#define UAC2_PE_CENTERFREQ 0x02
#define UAC2_PE_QFACTOR 0x03
#define UAC2_PE_GAIN 0x04
#define UAC2_PE_UNDERFLOW 0x05
#define UAC2_PE_OVERFLOW 0x06
#define UAC2_PE_LATENCY 0x07
/* A.17.8.2 Reverberation Effect Unit Control Selectors */
#define UAC2_RV_UNDEFINED 0x00
#define UAC2_RV_ENABLE 0x01
#define UAC2_RV_TYPE 0x02
#define UAC2_RV_LEVEL 0x03
#define UAC2_RV_TIME 0x04
#define UAC2_RV_FEEDBACK 0x05
#define UAC2_RV_PREDELAY 0x06
#define UAC2_RV_DENSITY 0x07
#define UAC2_RV_HIFREQ_ROLLOFF 0x08
#define UAC2_RV_UNDERFLOW 0x09
#define UAC2_RV_OVERFLOW 0x0a
#define UAC2_RV_LATENCY 0x0b
/* A.17.8.3 Modulation Delay Effect Control Selectors */
#define UAC2_MD_UNDEFINED 0x00
#define UAC2_MD_ENABLE 0x01
#define UAC2_MD_BALANCE 0x02
#define UAC2_MD_RATE 0x03
#define UAC2_MD_DEPTH 0x04
#define UAC2_MD_TIME 0x05
#define UAC2_MD_FEEDBACK 0x06
#define UAC2_MD_UNDERFLOW 0x07
#define UAC2_MD_OVERFLOW 0x08
#define UAC2_MD_LATENCY 0x09
/* A.17.8.4 Dynamic Range Compressor Effect Unit Control Selectors */
#define UAC2_DR_UNDEFINED 0x00
#define UAC2_DR_ENABLE 0x01
#define UAC2_DR_COMPRESSION_RATE 0x02
#define UAC2_DR_MAXAMPL 0x03
#define UAC2_DR_THRESHOLD 0x04
#define UAC2_DR_ATTACK_TIME 0x05
#define UAC2_DR_RELEASE_TIME 0x06
#define UAC2_DR_UNDEFLOW 0x07
#define UAC2_DR_OVERFLOW 0x08
#define UAC2_DR_LATENCY 0x09
/* A.17.9.1 Up/Down-mix Processing Unit Control Selectors */
#define UAC2_UD_UNDEFINED 0x00
#define UAC2_UD_ENABLE 0x01
#define UAC2_UD_MODE_SELECT 0x02
#define UAC2_UD_CLUSTER 0x03
#define UAC2_UD_UNDERFLOW 0x04
#define UAC2_UD_OVERFLOW 0x05
#define UAC2_UD_LATENCY 0x06
/* A.17.9.2 Dolby Prologic[tm] Processing Unit Control Selectors */
#define UAC2_DP_UNDEFINED 0x00
#define UAC2_DP_ENABLE 0x01
#define UAC2_DP_MODE_SELECT 0x02
#define UAC2_DP_CLUSTER 0x03
#define UAC2_DP_UNDERFFLOW 0x04
#define UAC2_DP_OVERFLOW 0x05
#define UAC2_DP_LATENCY 0x06
/* A.17.9.3 Stereo Expander Processing Unit Control Selectors */
#define UAC2_ST_EXT_UNDEFINED 0x00
#define UAC2_ST_EXT_ENABLE 0x01
#define UAC2_ST_EXT_WIDTH 0x02
#define UAC2_ST_EXT_UNDEFLOW 0x03
#define UAC2_ST_EXT_OVERFLOW 0x04
#define UAC2_ST_EXT_LATENCY 0x05
/* A.17.10 Extension Unit Control Selectors */
#define UAC2_XU_UNDEFINED 0x00
#define UAC2_XU_ENABLE 0x01
#define UAC2_XU_CLUSTER 0x02
#define UAC2_XU_UNDERFLOW 0x03
#define UAC2_XU_OVERFLOW 0x04
#define UAC2_XU_LATENCY 0x05
/* A.17.11 AudioStreaming Interface Control Selectors */
#define UAC2_AS_UNDEFINED 0x00
#define UAC2_AS_ACT_ALT_SETTING 0x01
#define UAC2_AS_VAL_ALT_SETTINGS 0x02
#define UAC2_AS_AUDIO_DATA_FORMAT 0x03
/* A.17.12 Encoder Control Selectors */
#define UAC2_EN_UNDEFINED 0x00
#define UAC2_EN_BIT_RATE 0x01
#define UAC2_EN_QUALITY 0x02
#define UAC2_EN_VBR 0x03
#define UAC2_EN_TYPE 0x04
#define UAC2_EN_UNDERFLOW 0x05
#define UAC2_EN_OVERFLOW 0x06
#define UAC2_EN_ENCODER_ERROR 0x07
#define UAC2_EN_PARAM1 0x08
#define UAC2_EN_PARAM2 0x09
#define UAC2_EN_PARAM3 0x0a
#define UAC2_EN_PARAM4 0x0b
#define UAC2_EN_PARAM5 0x0c
#define UAC2_EN_PARAM6 0x0d
#define UAC2_EN_PARAM7 0x0e
#define UAC2_EN_PARAM8 0x0f
/* A.17.13.1 MPEG Decoder Control Selectors */
#define UAC2_MPEG_UNDEFINED 0x00
#define UAC2_MPEG_DUAL_CHANNEL 0x01
#define UAC2_MPEG_SECOND_STEREO 0x02
#define UAC2_MPEG_MULTILINGUAL 0x03
#define UAC2_MPEG_DYN_RANGE 0x04
#define UAC2_MPEG_SCALING 0x05
#define UAC2_MPEG_HILO_SCALING 0x06
#define UAC2_MPEG_UNDERFLOW 0x07
#define UAC2_MPEG_OVERFLOW 0x08
#define UAC2_MPEG_DECODER_ERROR 0x09
/* A17.13.2 AC3 Decoder Control Selectors */
#define UAC2_AC3_UNDEFINED 0x00
#define UAC2_AC3_MODE 0x01
#define UAC2_AC3_DYN_RANGE 0x02
#define UAC2_AC3_SCALING 0x03
#define UAC2_AC3_HILO_SCALING 0x04
#define UAC2_AC3_UNDERFLOW 0x05
#define UAC2_AC3_OVERFLOW 0x06
#define UAC2_AC3_DECODER_ERROR 0x07
/* A17.13.3 WMA Decoder Control Selectors */
#define UAC2_WMA_UNDEFINED 0x00
#define UAC2_WMA_UNDERFLOW 0x01
#define UAC2_WMA_OVERFLOW 0x02
#define UAC2_WMA_DECODER_ERROR 0x03
/* A17.13.4 DTS Decoder Control Selectors */
#define UAC2_DTS_UNDEFINED 0x00
#define UAC2_DTS_UNDERFLOW 0x01
#define UAC2_DTS_OVERFLOW 0x02
#define UAC2_DTS_DECODER_ERROR 0x03
/* A17.14 Endpoint Control Selectors */
#define UAC2_EP_CS_UNDEFINED 0x00
#define UAC2_EP_CS_PITCH 0x01
#define UAC2_EP_CS_DATA_OVERRUN 0x02
#define UAC2_EP_CS_DATA_UNDERRUN 0x03
#endif /* __LINUX_USB_AUDIO_V2_H */
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