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// SPDX-License-Identifier: GPL-2.0 /* * 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 uac_v2v3_control_is_readable(u32 bmControls, u8 control) { return (bmControls >> ((control - 1) 2)) & 0x1; } static inline bool uac_v2v3_control_is_writeable(u32 bmControls, u8 control) { return (bmControls >> ((control - 1) * 2)) & 0x2; } /* 4.7.2 Class-Specific AC Interface Descriptor / struct uac2_ac_header_descriptor { __u8 bLength; / 9 / __u8 bDescriptorType; / USB_DT_CS_INTERFACE / __u8 bDescriptorSubtype; / UAC_MS_HEADER / __le16 bcdADC; / 0x0200 / __u8 bCategory; __le16 wTotalLength; / includes Unit and Terminal desc. / __u8 bmControls; } __packed; / 2.3.1.6 Type I Format Type Descriptor (Frmts20 final.pdf)/ struct uac2_format_type_i_descriptor { __u8 bLength; / in bytes: 6 / __u8 bDescriptorType; / USB_DT_CS_INTERFACE / __u8 bDescriptorSubtype; / FORMAT_TYPE / __u8 bFormatType; / FORMAT_TYPE_1 / __u8 bSubslotSize; / {1,2,3,4} / __u8 bBitResolution; } __packed; / 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 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; __le16 wTerminalType; __u8 bAssocTerminal; __u8 bCSourceID; __u8 bNrChannels; __le32 bmChannelConfig; __u8 iChannelNames; __le16 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; __le16 wTerminalType; __u8 bAssocTerminal; __u8 bSourceID; __u8 bCSourceID; __le16 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; __le32 bmFormats; __u8 bNrChannels; __le32 bmChannelConfig; __u8 iChannelNames; } __attribute__((packed)); #define UAC2_FORMAT_TYPE_I_RAW_DATA (1 << 31) / 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) / 5.2.5.4.2 Connector Control Parameter Block / struct uac2_connectors_ctl_blk { __u8 bNrChannels; __le32 bmChannelConfig; __u8 iChannelNames; } __attribute__((packed)); / 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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