145 lines
4.5 KiB
C
145 lines
4.5 KiB
C
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#ifndef USB_AUDIO_H
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#define USB_AUDIO_H
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// (Partial) USB Class Definitions for Audio Devices, version 1.0
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// Reference: http://www.usb.org/developers/devclass_docs/audio10.pdf
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#include <BeBuild.h> // for _PACKED definition
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#define USB_AUDIO_DEVICE_CLASS 0x01
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#define USB_AUDIO_CLASS_VERSION 0x0100
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enum {
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USB_AUDIO_INTERFACE_AUDIO_CLASS = 0x01
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};
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enum { // Audio Interface Subclasses
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USB_AUDIO_INTERFACE_AUDIOCONTROL_SUBCLASS = 0x01, //
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USB_AUDIO_INTERFACE_AUDIOSTREAMING_SUBCLASS, //
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USB_AUDIO_INTERFACE_MIDISTREAMING_SUBCLASS //
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};
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enum { // Audio Class-Specific AudioControl Interface descriptor subtypes
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USB_AUDIO_AC_HEADER = 0x01,
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USB_AUDIO_AC_INPUT_TERMINAL,
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USB_AUDIO_AC_OUTPUT_TERMINAL,
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USB_AUDIO_AC_MIXER_UNIT,
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USB_AUDIO_AC_SELECTOR_UNIT,
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USB_AUDIO_AC_FEATURE_UNIT,
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USB_AUDIO_AC_PROCESSING_UNIT,
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USB_AUDIO_AC_EXTENSION_UNIT
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};
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enum { // Audio Class-Specific AudioStreaming Interface descriptor subtypes
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USB_AUDIO_AS_GENERAL = 0x01,
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USB_AUDIO_AS_FORMAT_TYPE,
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USB_AUDIO_AS_FORMAT_SPECIFIC
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};
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enum { // Processing Unit Process Types (for USB_AUDIO_AC_PROCESSING_UNIT)
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USB_AUDIO_UPDOWNMIX_PROCESS = 0x01,
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USB_AUDIO_DOLBY_PROLOGIC_PROCESS,
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USB_AUDIO_3D_STEREO_EXTENDER_PROCESS,
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USB_AUDIO_REVERBERATION_PROCESS,
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USB_AUDIO_CHORUS_PROCESS,
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USB_AUDIO_DYN_RANGE_COMP_PROCESS
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};
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// AudioControl request codes
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#define USB_AUDIO_SET_CURRENT 0x01
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#define USB_AUDIO_GET_CURRENT 0x81
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#define USB_AUDIO_SET_MIN 0x02
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#define USB_AUDIO_GET_MIN 0x82
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#define USB_AUDIO_SET_MAX 0x03
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#define USB_AUDIO_GET_MAX 0x83
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#define USB_AUDIO_SET_RES 0x04
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#define USB_AUDIO_GET_RES 0x84
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#define USB_AUDIO_SET_MEM 0x05
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#define USB_AUDIO_GET_MEM 0x85
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#define USB_AUDIO_GET_STATUS 0xFF
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enum { // Terminal Control Selectors
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USB_AUDIO_COPY_PROTECT_CONTROL = 0x01
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};
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/* A.10.2 Feature Unit Control Selectors */
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#define AC_FU_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_MUTE_CONTROL 0x01
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#define USB_AUDIO_VOLUME_CONTROL 0x02
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#define USB_AUDIO_BASS_CONTROL 0x03
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#define USB_AUDIO_MID_CONTROL 0x04
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#define USB_AUDIO_TREBLE_CONTROL 0x05
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#define USB_AUDIO_GRAPHIC_EQUALIZER_CONTROL 0x06
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#define USB_AUDIO_AUTOMATIC_GAIN_CONTROL 0x07
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#define USB_AUDIO_DELAY_CONTROL 0x08
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#define USB_AUDIO_BASS_BOOST_CONTROL 0x09
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#define USB_AUDIO_LOUDNESS_CONTROL 0x0A
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/* A.10.3.1 Up/Down-mix Processing Unit Control Selectors */
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#define USB_AUDIO_UD_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_UD_ENABLED_CONTROL 0x01
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#define USB_AUDIO_UD_MODE_SELECT_CONTROL 0x02
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/* A.10.3.2 Dolby Prologic(tm) Processing Unit Control Selectors */
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#define USB_AUDIO_DP_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_DP_ENABLE_CONTROL 0x01
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#define USB_AUDIO_DP_MODE_SELECT_CONTROL 0x02
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/* A.10.3.3 3D Stereo Extender Processing Unit Control Selectors */
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#define USB_AUDIO_3D_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_3D_ENABLED_CONTROL 0x01
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#define USB_AUDIO_3D_SPACIOUSNESS_CONTROL 0x03
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/* A.10.3.4 Reverberation Processing Unit Control Selectors */
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#define USB_AUDIO_RV_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_RV_ENABLE_CONTROL 0x01
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#define USB_AUDIO_RV_REVERB_LEVEL_CONTROL 0x02
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#define USB_AUDIO_RV_REVERB_TIME_CONTROL 0x03
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#define USB_AUDIO_RV_REVERB_FEEDBACK_CONTROL 0x04
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/* A.10.3.5 Chorus Processing Unit Control Selectors */
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#define USB_AUDIO_CH_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_CH_ENABLE_CONTROL 0x01
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#define USB_AUDIO_CHORUS_LEVEL_CONTROL 0x02
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#define USB_AUDIO_CHORUS_RATE_CONTROL 0x03
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#define USB_AUDIO_CHORUS_DETH_CONTROL 0x04
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/* A.10.3.6 Dynamic Range Compressor Processing Unit Control Selectors */
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#define USB_AUDIO_DR_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_DR_ENABLE_CONTROL 0x01
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#define USB_AUDIO_COMPRESSION_RATE_CONTROL 0x02
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#define USB_AUDIO_MAXAMPL_CONTROL 0x03
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#define USB_AUDIO_THRESHOLD_CONTROL 0x04
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#define USB_AUDIO_ATTACK_TIME 0x05
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#define USB_AUDIO_RELEASE_TIME 0x06
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/* A.10.4 Extension Unit Control Selectors */
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#define USB_AUDIO_XU_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_XU_ENABLE_CONTROL 0x01
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/* A.10.5 Endpoint Control Selectors */
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#define USB_AUDIO_EP_CONTROL_UNDEFINED 0x00
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#define USB_AUDIO_SAMPLING_FREQ_CONTROL 0x01
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#define USB_AUDIO_PITCH_CONTROL 0x02
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typedef struct {
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uint8 length;
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uint8 type;
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uint8 subtype;
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uint8 format_type;
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uint8 num_channels;
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uint8 subframe_size;
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uint8 bit_resolution;
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uint8 sample_freq_type;
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uint8 sample_freq[3]; // [0] + [1] << 8 + [2] << 16
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// if sample_freq_type != 1,
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// (sample_freq_type - 1) x uint8 sample_freq[3] follows...
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} _PACKED usb_audio_format_type_descriptor;
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#define USB_AUDIO_FORMAT_TYPE_UNDEFINED 0x00
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#define USB_AUDIO_FORMAT_TYPE_I 0x01
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#define USB_AUDIO_FORMAT_TYPE_II 0x02
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#define USB_AUDIO_FORMAT_TYPE_III 0x03
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#endif // USB_AUDIO_H
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