/*----------------------------------------------------------------------------
 *      U S B  -  K e r n e l
 *----------------------------------------------------------------------------
 *      Name:    AUDIO.H
 *      Purpose: USB Audio Device Class Definitions
 *      Version: V1.10
 *----------------------------------------------------------------------------
 *      This file is part of the uVision/ARM development tools.
 *      This software may only be used under the terms of a valid, current,
 *      end user licence from KEIL for a compatible version of KEIL software
 *      development tools. Nothing else gives you the right to use it.
 *
 *      Copyright (c) 2005-2006 Keil Software.
 *---------------------------------------------------------------------------*/

#ifndef __AUDIO_H__
#define __AUDIO_H__


/* Audio Interface Subclass Codes */
#define AUDIO_SUBCLASS_UNDEFINED                0x00
#define AUDIO_SUBCLASS_AUDIOCONTROL             0x01
#define AUDIO_SUBCLASS_AUDIOSTREAMING           0x02
#define AUDIO_SUBCLASS_MIDISTREAMING            0x03

/* Audio Interface Protocol Codes */
#define AUDIO_PROTOCOL_UNDEFINED                0x00


/* Audio Descriptor Types */
#define AUDIO_UNDEFINED_DESCRIPTOR_TYPE         0x20
#define AUDIO_DEVICE_DESCRIPTOR_TYPE            0x21
#define AUDIO_CONFIGURATION_DESCRIPTOR_TYPE     0x22
#define AUDIO_STRING_DESCRIPTOR_TYPE            0x23
#define AUDIO_INTERFACE_DESCRIPTOR_TYPE         0x24
#define AUDIO_ENDPOINT_DESCRIPTOR_TYPE          0x25


/* Audio Control Interface Descriptor Subtypes */
#define AUDIO_CONTROL_UNDEFINED                 0x00
#define AUDIO_CONTROL_HEADER                    0x01
#define AUDIO_CONTROL_INPUT_TERMINAL            0x02
#define AUDIO_CONTROL_OUTPUT_TERMINAL           0x03
#define AUDIO_CONTROL_MIXER_UNIT                0x04
#define AUDIO_CONTROL_SELECTOR_UNIT             0x05
#define AUDIO_CONTROL_FEATURE_UNIT              0x06
#define AUDIO_CONTROL_PROCESSING_UNIT           0x07
#define AUDIO_CONTROL_EXTENSION_UNIT            0x08

/* Audio Streaming Interface Descriptor Subtypes */
#define AUDIO_STREAMING_UNDEFINED               0x00
#define AUDIO_STREAMING_GENERAL                 0x01
#define AUDIO_STREAMING_FORMAT_TYPE             0x02
#define AUDIO_STREAMING_FORMAT_SPECIFIC         0x03

/* Audio Endpoint Descriptor Subtypes */
#define AUDIO_ENDPOINT_UNDEFINED                0x00
#define AUDIO_ENDPOINT_GENERAL                  0x01


/* Audio Descriptor Sizes */
#define AUDIO_CONTROL_INTERFACE_DESC_SZ(n)      0x08+n
#define AUDIO_STREAMING_INTERFACE_DESC_SIZE     0x07
#define AUDIO_INPUT_TERMINAL_DESC_SIZE          0x0C
#define AUDIO_OUTPUT_TERMINAL_DESC_SIZE         0x09
#define AUDIO_MIXER_UNIT_DESC_SZ(p,n)           0x0A+p+n
#define AUDIO_SELECTOR_UNIT_DESC_SZ(p)          0x06+p
#define AUDIO_FEATURE_UNIT_DESC_SZ(ch,n)        0x07+(ch+1)*n
#define AUDIO_PROCESSING_UNIT_DESC_SZ(p,n,x)    0x0D+p+n+x
#define AUDIO_EXTENSION_UNIT_DESC_SZ(p,n)       0x0D+p+n
#define AUDIO_STANDARD_ENDPOINT_DESC_SIZE       0x09
#define AUDIO_STREAMING_ENDPOINT_DESC_SIZE      0x07


/* Audio Processing Unit Process Types */
#define AUDIO_UNDEFINED_PROCESS                 0x00
#define AUDIO_UP_DOWN_MIX_PROCESS               0x01
#define AUDIO_DOLBY_PROLOGIC_PROCESS            0x02
#define AUDIO_3D_STEREO_PROCESS                 0x03
#define AUDIO_REVERBERATION_PROCESS             0x04
#define AUDIO_CHORUS_PROCESS                    0x05
#define AUDIO_DYN_RANGE_COMP_PROCESS            0x06


/* Audio Request Codes */
#define AUDIO_REQUEST_UNDEFINED                 0x00
#define AUDIO_REQUEST_SET_CUR                   0x01
#define AUDIO_REQUEST_GET_CUR                   0x81
#define AUDIO_REQUEST_SET_MIN                   0x02
#define AUDIO_REQUEST_GET_MIN                   0x82
#define AUDIO_REQUEST_SET_MAX                   0x03
#define AUDIO_REQUEST_GET_MAX                   0x83
#define AUDIO_REQUEST_SET_RES                   0x04
#define AUDIO_REQUEST_GET_RES                   0x84
#define AUDIO_REQUEST_SET_MEM                   0x05
#define AUDIO_REQUEST_GET_MEM                   0x85
#define AUDIO_REQUEST_GET_STAT                  0xFF


/* Audio Control Selector Codes */
#define AUDIO_CONTROL_UNDEFINED                 0x00    /* Common Selector */

/*  Terminal Control Selectors */
#define AUDIO_COPY_PROTECT_CONTROL              0x01

/*  Feature Unit Control Selectors */
#define AUDIO_MUTE_CONTROL                      0x01
#define AUDIO_VOLUME_CONTROL                    0x02
#define AUDIO_BASS_CONTROL                      0x03
#define AUDIO_MID_CONTROL                       0x04
#define AUDIO_TREBLE_CONTROL                    0x05
#define AUDIO_GRAPHIC_EQUALIZER_CONTROL         0x06
#define AUDIO_AUTOMATIC_GAIN_CONTROL            0x07
#define AUDIO_DELAY_CONTROL                     0x08
#define AUDIO_BASS_BOOST_CONTROL                0x09
#define AUDIO_LOUDNESS_CONTROL                  0x0A

/*  Processing Unit Control Selectors: */
#define AUDIO_ENABLE_CONTROL                    0x01    /* Common Selector */
#define AUDIO_MODE_SELECT_CONTROL               0x02    /* Common Selector */

/*  - Up/Down-mix Control Selectors */
/*      AUDIO_ENABLE_CONTROL                    0x01       Common Selector */
/*      AUDIO_MODE_SELECT_CONTROL               0x02       Common Selector */

/*  - Dolby Prologic Control Selectors */
/*      AUDIO_ENABLE_CONTROL                    0x01       Common Selector */
/*      AUDIO_MODE_SELECT_CONTROL               0x02       Common Selector */

/*  - 3D Stereo Extender Control Selectors */
/*      AUDIO_ENABLE_CONTROL                    0x01       Common Selector */
#define AUDIO_SPACIOUSNESS_CONTROL              0x02

/*  - Reverberation Control Selectors */
/*      AUDIO_ENABLE_CONTROL                    0x01       Common Selector */
#define AUDIO_REVERB_LEVEL_CONTROL              0x02
#define AUDIO_REVERB_TIME_CONTROL               0x03
#define AUDIO_REVERB_FEEDBACK_CONTROL           0x04

/*  - Chorus Control Selectors */
/*      AUDIO_ENABLE_CONTROL                    0x01       Common Selector */
#define AUDIO_CHORUS_LEVEL_CONTROL              0x02
#define AUDIO_SHORUS_RATE_CONTROL               0x03
#define AUDIO_CHORUS_DEPTH_CONTROL              0x04

/*  - Dynamic Range Compressor Control Selectors */
/*      AUDIO_ENABLE_CONTROL                    0x01       Common Selector */
#define AUDIO_COMPRESSION_RATE_CONTROL          0x02
#define AUDIO_MAX_AMPL_CONTROL                  0x03
#define AUDIO_THRESHOLD_CONTROL                 0x04
#define AUDIO_ATTACK_TIME_CONTROL               0x05
#define AUDIO_RELEASE_TIME_CONTROL              0x06

/*  Extension Unit Control Selectors */
/*      AUDIO_ENABLE_CONTROL                    0x01       Common Selector */

/*  Endpoint Control Selectors */
#define AUDIO_SAMPLING_FREQ_CONTROL             0x01
#define AUDIO_PITCH_CONTROL                     0x02


/* Audio Format Specific Control Selectors */

/*  MPEG Control Selectors */
#define AUDIO_MPEG_CONTROL_UNDEFINED            0x00
#define AUDIO_MPEG_DUAL_CHANNEL_CONTROL         0x01
#define AUDIO_MPEG_SECOND_STEREO_CONTROL        0x02
#define AUDIO_MPEG_MULTILINGUAL_CONTROL         0x03
#define AUDIO_MPEG_DYN_RANGE_CONTROL            0x04
#define AUDIO_MPEG_SCALING_CONTROL              0x05
#define AUDIO_MPEG_HILO_SCALING_CONTROL         0x06

/*  AC-3 Control Selectors */
#define AUDIO_AC3_CONTROL_UNDEFINED             0x00
#define AUDIO_AC3_MODE_CONTROL                  0x01
#define AUDIO_AC3_DYN_RANGE_CONTROL             0x02
#define AUDIO_AC3_SCALING_CONTROL               0x03
#define AUDIO_AC3_HILO_SCALING_CONTROL          0x04


/* Audio Format Types */
#define AUDIO_FORMAT_TYPE_UNDEFINED             0x00
#define AUDIO_FORMAT_TYPE_I                     0x01
#define AUDIO_FORMAT_TYPE_II                    0x02
#define AUDIO_FORMAT_TYPE_III                   0x03