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-rw-r--r--LUFA/Drivers/USB/Class/Common/Audio.h812
1 files changed, 406 insertions, 406 deletions
diff --git a/LUFA/Drivers/USB/Class/Common/Audio.h b/LUFA/Drivers/USB/Class/Common/Audio.h
index 512758866..7b9e9f5da 100644
--- a/LUFA/Drivers/USB/Class/Common/Audio.h
+++ b/LUFA/Drivers/USB/Class/Common/Audio.h
@@ -1,406 +1,406 @@
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2010.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, distribute, and sell this
- software and its documentation for any purpose is hereby granted
- without fee, provided that the above copyright notice appear in
- all copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- * \brief Common definitions and declarations for the library USB Audio Class driver.
- *
- * Common definitions and declarations for the library USB Audio Class driver.
- *
- * \note This file should not be included directly. It is automatically included as needed by the class driver
- * dispatch header located in LUFA/Drivers/USB/Class/Audio.h.
- */
-
-/** \ingroup Group_USBClassAudio
- * @defgroup Group_USBClassAudioCommon Common Class Definitions
- *
- * \section Module Description
- * Constants, Types and Enum definitions that are common to both Device and Host modes for the USB
- * Audio Class.
- *
- * @{
- */
-
-#ifndef _AUDIO_CLASS_COMMON_H_
-#define _AUDIO_CLASS_COMMON_H_
-
- /* Includes: */
- #include "../../USB.h"
-
- #include <string.h>
-
- /* Enable C linkage for C++ Compilers: */
- #if defined(__cplusplus)
- extern "C" {
- #endif
-
- /* Preprocessor Checks: */
- #if !defined(__INCLUDE_FROM_AUDIO_DRIVER)
- #error Do not include this file directly. Include LUFA/Drivers/Class/Audio.h instead.
- #endif
-
- /* Macros: */
- #if !defined(AUDIO_TOTAL_SAMPLE_RATES) || defined(__DOXYGEN__)
- /** Total number of discrete audio sample rates supported by the device. This value can be overridden by defining this
- * token in the project makefile to the desired value, and passing it to the compiler via the -D switch.
- */
- #define AUDIO_TOTAL_SAMPLE_RATES 1
- #endif
-
- /** Descriptor header constant to indicate a Audio class interface descriptor. */
- #define DTYPE_AudioInterface 0x24
-
- /** Descriptor header constant to indicate a Audio class endpoint descriptor. */
- #define DTYPE_AudioEndpoint 0x25
-
- /** Audio class descriptor subtype value for a Audio class specific header descriptor. */
- #define DSUBTYPE_Header 0x01
-
- /** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
- #define DSUBTYPE_InputTerminal 0x02
-
- /** Audio class descriptor subtype value for an Input Terminal Audio class specific descriptor. */
- #define DSUBTYPE_OutputTerminal 0x03
-
- /** Audio class descriptor subtype value for a Feature Unit Audio class specific descriptor. */
- #define DSUBTYPE_FeatureUnit 0x06
-
- /** Audio class descriptor subtype value for a general Audio class specific descriptor. */
- #define DSUBTYPE_General 0x01
-
- /** Audio class descriptor subtype value for an Audio class specific descriptor indicating the format of an audio stream. */
- #define DSUBTYPE_Format 0x02
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_LEFT_FRONT (1 << 0)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_RIGHT_FRONT (1 << 1)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_CENTER_FRONT (1 << 2)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_LOW_FREQ_ENHANCE (1 << 3)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_LEFT_SURROUND (1 << 4)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_RIGHT_SURROUND (1 << 5)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_LEFT_OF_CENTER (1 << 6)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_RIGHT_OF_CENTER (1 << 7)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_SURROUND (1 << 8)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_SIDE_LEFT (1 << 9)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_SIDE_RIGHT (1 << 10)
-
- /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define CHANNEL_TOP (1 << 11)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_MUTE (1 << 0)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_VOLUME (1 << 1)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_BASS (1 << 2)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_MID (1 << 3)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_TREBLE (1 << 4)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_GRAPHIC_EQUALIZER (1 << 5)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_AUTOMATIC_GAIN (1 << 6)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_DELAY (1 << 7)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_BASS_BOOST (1 << 8)
-
- /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
- #define FEATURE_BASS_LOUDNESS (1 << 9)
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_UNDEFINED 0x0100
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_STREAMING 0x0101
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_VENDOR 0x01FF
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_UNDEFINED 0x0200
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_MIC 0x0201
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_DESKTOP_MIC 0x0202
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_PERSONAL_MIC 0x0203
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_OMNIDIR_MIC 0x0204
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_MIC_ARRAY 0x0205
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_PROCESSING_MIC 0x0206
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_IN_OUT_UNDEFINED 0x0300
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_OUT_SPEAKER 0x0301
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_OUT_HEADPHONES 0x0302
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_OUT_HEAD_MOUNTED 0x0303
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_OUT_DESKTOP 0x0304
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_OUT_ROOM 0x0305
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_OUT_COMMUNICATION 0x0306
-
- /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
- #define TERMINAL_OUT_LOWFREQ 0x0307
-
- /** Convenience macro, to fill a 24-bit AudioSampleFreq_t structure with the given sample rate as a 24-bit number.
- *
- * \param[in] freq Required audio sampling frequency in HZ
- */
- #define AUDIO_SAMPLE_FREQ(freq) {LowWord: ((uint32_t)freq & 0x00FFFF), HighByte: (((uint32_t)freq >> 16) & 0x0000FF)}
-
- /** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
- * accepts only filled endpoint packets of audio samples.
- */
- #define EP_ACCEPTS_ONLY_FULL_PACKETS (1 << 7)
-
- /** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
- * will accept partially filled endpoint packets of audio samples.
- */
- #define EP_ACCEPTS_SMALL_PACKETS (0 << 7)
-
- /* Type Defines: */
- /** \brief Audio Class Specific Interface Descriptor.
- *
- * Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to
- * supply extra information about the audio device's layout to the host. See the USB Audio specification for more
- * details.
- */
- typedef struct
- {
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
-
- uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
- uint16_t TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
-
- uint8_t InCollection; /**< Total number of audio class interfaces within this device */
- uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface */
- } USB_Audio_Interface_AC_t;
-
- /** \brief Audio Class Specific Feature Unit Descriptor.
- *
- * Type define for an Audio class specific Feature Unit descriptor. This indicates to the host what features
- * are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
- * specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
-
- uint8_t UnitID; /**< ID value of this feature unit - must be a unique value within the device */
- uint8_t SourceID; /**< Source ID value of the audio source input into this feature unit */
-
- uint8_t ControlSize; /**< Size of each element in the ChanelControlls array */
- uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel */
-
- uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
- } USB_Audio_FeatureUnit_t;
-
- /** \brief Audio Class Specific Input Terminal Descriptor.
- *
- * Type define for an Audio class specific input terminal descriptor. This indicates to the host that the device
- * contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
- * a USB endpoint). See the USB Audio specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
-
- uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
- uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
- uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
- * such as the speaker and microphone of a phone handset
- */
- uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
- uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal */
-
- uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device */
- uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
- } USB_Audio_InputTerminal_t;
-
- /** \brief Audio Class Specific Output Terminal Descriptor.
- *
- * Type define for an Audio class specific output terminal descriptor. This indicates to the host that the device
- * contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
- * a USB endpoint). See the USB Audio specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
-
- uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
- uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
- uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
- * such as the speaker and microphone of a phone handset
- */
- uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from */
-
- uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
- } USB_Audio_OutputTerminal_t;
-
- /** \brief Audio Class Specific Streaming Audio Interface Descriptor.
- *
- * Type define for an Audio class specific streaming interface descriptor. This indicates to the host
- * how audio streams within the device are formatted. See the USB Audio specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
-
- uint8_t TerminalLink; /**< ID value of the output terminal this descriptor is describing */
-
- uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output */
- uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification */
- } USB_Audio_Interface_AS_t;
-
- /** \brief 24-Bit Audio Frequency Structure.
- *
- * Type define for a 24bit audio sample frequency structure. GCC does not contain a built in 24bit datatype,
- * this this structure is used to build up the value instead. Fill this structure with the SAMPLE_FREQ() macro.
- */
- typedef struct
- {
- uint16_t LowWord; /**< Low 16 bits of the 24-bit value */
- uint8_t HighByte; /**< Upper 8 bits of the 24-bit value */
- } USB_Audio_SampleFreq_t;
-
- /** \brief Audio Class Specific Format Descriptor.
- *
- * Type define for an Audio class specific audio format descriptor. This is used to give the host full details
- * about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
- * in the device's audio streams. See the USB Audio specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
-
- uint8_t FormatType; /**< Format of the audio stream, see Audio Device Formats specification */
- uint8_t Channels; /**< Total number of discrete channels in the stream */
-
- uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream */
- uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream */
-
- uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device */
- USB_Audio_SampleFreq_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES]; /**< Sample frequencies supported by the device */
- } USB_Audio_Format_t;
-
- /** \brief Audio Class Specific Streaming Endpoint Descriptor.
- *
- * Type define for an Audio class specific endpoint descriptor. This contains a regular endpoint
- * descriptor with a few Audio-class specific extensions. See the USB Audio specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
-
- uint8_t Refresh; /**< Always set to zero */
- uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronization information to, if needed (zero otherwise) */
- } USB_Audio_StreamEndpoint_Std_t;
-
- /** \brief Audio Class Specific Extended Endpoint Descriptor.
- *
- * Type define for an Audio class specific extended endpoint descriptor. This contains extra information
- * on the usage of endpoints used to stream audio in and out of the USB Audio device, and follows an Audio
- * class specific extended endpoint descriptor. See the USB Audio specification for more details.
- */
- typedef struct
- {
- USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
- uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
-
- uint8_t Attributes; /**< Audio class specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS */
-
- uint8_t LockDelayUnits; /**< Units used for the LockDelay field, see Audio class specification */
- uint16_t LockDelay; /**< Time required to internally lock endpoint's internal clock recovery circuitry */
- } USB_Audio_StreamEndpoint_Spc_t;
-
- /* Disable C linkage for C++ Compilers: */
- #if defined(__cplusplus)
- }
- #endif
-
-#endif
-
-/** @} */
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.fourwalledcubicle.com
+*/
+
+/*
+ Copyright 2010 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \file
+ * \brief Common definitions and declarations for the library USB Audio Class driver.
+ *
+ * Common definitions and declarations for the library USB Audio Class driver.
+ *
+ * \note This file should not be included directly. It is automatically included as needed by the class driver
+ * dispatch header located in LUFA/Drivers/USB/Class/Audio.h.
+ */
+
+/** \ingroup Group_USBClassAudio
+ * @defgroup Group_USBClassAudioCommon Common Class Definitions
+ *
+ * \section Module Description
+ * Constants, Types and Enum definitions that are common to both Device and Host modes for the USB
+ * Audio Class.
+ *
+ * @{
+ */
+
+#ifndef _AUDIO_CLASS_COMMON_H_
+#define _AUDIO_CLASS_COMMON_H_
+
+ /* Includes: */
+ #include "../../USB.h"
+
+ #include <string.h>
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_AUDIO_DRIVER)
+ #error Do not include this file directly. Include LUFA/Drivers/Class/Audio.h instead.
+ #endif
+
+ /* Macros: */
+ #if !defined(AUDIO_TOTAL_SAMPLE_RATES) || defined(__DOXYGEN__)
+ /** Total number of discrete audio sample rates supported by the device. This value can be overridden by defining this
+ * token in the project makefile to the desired value, and passing it to the compiler via the -D switch.
+ */
+ #define AUDIO_TOTAL_SAMPLE_RATES 1
+ #endif
+
+ /** Descriptor header constant to indicate a Audio class interface descriptor. */
+ #define DTYPE_AudioInterface 0x24
+
+ /** Descriptor header constant to indicate a Audio class endpoint descriptor. */
+ #define DTYPE_AudioEndpoint 0x25
+
+ /** Audio class descriptor subtype value for a Audio class specific header descriptor. */
+ #define DSUBTYPE_Header 0x01
+
+ /** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
+ #define DSUBTYPE_InputTerminal 0x02
+
+ /** Audio class descriptor subtype value for an Input Terminal Audio class specific descriptor. */
+ #define DSUBTYPE_OutputTerminal 0x03
+
+ /** Audio class descriptor subtype value for a Feature Unit Audio class specific descriptor. */
+ #define DSUBTYPE_FeatureUnit 0x06
+
+ /** Audio class descriptor subtype value for a general Audio class specific descriptor. */
+ #define DSUBTYPE_General 0x01
+
+ /** Audio class descriptor subtype value for an Audio class specific descriptor indicating the format of an audio stream. */
+ #define DSUBTYPE_Format 0x02
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_LEFT_FRONT (1 << 0)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_RIGHT_FRONT (1 << 1)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_CENTER_FRONT (1 << 2)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_LOW_FREQ_ENHANCE (1 << 3)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_LEFT_SURROUND (1 << 4)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_RIGHT_SURROUND (1 << 5)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_LEFT_OF_CENTER (1 << 6)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_RIGHT_OF_CENTER (1 << 7)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_SURROUND (1 << 8)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_SIDE_LEFT (1 << 9)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_SIDE_RIGHT (1 << 10)
+
+ /** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define CHANNEL_TOP (1 << 11)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_MUTE (1 << 0)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_VOLUME (1 << 1)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_BASS (1 << 2)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_MID (1 << 3)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_TREBLE (1 << 4)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_GRAPHIC_EQUALIZER (1 << 5)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_AUTOMATIC_GAIN (1 << 6)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_DELAY (1 << 7)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_BASS_BOOST (1 << 8)
+
+ /** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+ #define FEATURE_BASS_LOUDNESS (1 << 9)
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_UNDEFINED 0x0100
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_STREAMING 0x0101
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_VENDOR 0x01FF
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_UNDEFINED 0x0200
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_MIC 0x0201
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_DESKTOP_MIC 0x0202
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_PERSONAL_MIC 0x0203
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_OMNIDIR_MIC 0x0204
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_MIC_ARRAY 0x0205
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_PROCESSING_MIC 0x0206
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_IN_OUT_UNDEFINED 0x0300
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_OUT_SPEAKER 0x0301
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_OUT_HEADPHONES 0x0302
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_OUT_HEAD_MOUNTED 0x0303
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_OUT_DESKTOP 0x0304
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_OUT_ROOM 0x0305
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_OUT_COMMUNICATION 0x0306
+
+ /** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+ #define TERMINAL_OUT_LOWFREQ 0x0307
+
+ /** Convenience macro, to fill a 24-bit AudioSampleFreq_t structure with the given sample rate as a 24-bit number.
+ *
+ * \param[in] freq Required audio sampling frequency in HZ
+ */
+ #define AUDIO_SAMPLE_FREQ(freq) {LowWord: ((uint32_t)freq & 0x00FFFF), HighByte: (((uint32_t)freq >> 16) & 0x0000FF)}
+
+ /** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
+ * accepts only filled endpoint packets of audio samples.
+ */
+ #define EP_ACCEPTS_ONLY_FULL_PACKETS (1 << 7)
+
+ /** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
+ * will accept partially filled endpoint packets of audio samples.
+ */
+ #define EP_ACCEPTS_SMALL_PACKETS (0 << 7)
+
+ /* Type Defines: */
+ /** \brief Audio Class Specific Interface Descriptor.
+ *
+ * Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to
+ * supply extra information about the audio device's layout to the host. See the USB Audio specification for more
+ * details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+ uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
+ uint16_t TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
+
+ uint8_t InCollection; /**< Total number of audio class interfaces within this device */
+ uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface */
+ } USB_Audio_Interface_AC_t;
+
+ /** \brief Audio Class Specific Feature Unit Descriptor.
+ *
+ * Type define for an Audio class specific Feature Unit descriptor. This indicates to the host what features
+ * are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
+ * specification for more details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+ uint8_t UnitID; /**< ID value of this feature unit - must be a unique value within the device */
+ uint8_t SourceID; /**< Source ID value of the audio source input into this feature unit */
+
+ uint8_t ControlSize; /**< Size of each element in the ChanelControlls array */
+ uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel */
+
+ uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
+ } USB_Audio_FeatureUnit_t;
+
+ /** \brief Audio Class Specific Input Terminal Descriptor.
+ *
+ * Type define for an Audio class specific input terminal descriptor. This indicates to the host that the device
+ * contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
+ * a USB endpoint). See the USB Audio specification for more details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+ uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
+ uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
+ uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
+ * such as the speaker and microphone of a phone handset
+ */
+ uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
+ uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal */
+
+ uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device */
+ uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
+ } USB_Audio_InputTerminal_t;
+
+ /** \brief Audio Class Specific Output Terminal Descriptor.
+ *
+ * Type define for an Audio class specific output terminal descriptor. This indicates to the host that the device
+ * contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
+ * a USB endpoint). See the USB Audio specification for more details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+ uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
+ uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask */
+ uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
+ * such as the speaker and microphone of a phone handset
+ */
+ uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from */
+
+ uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device */
+ } USB_Audio_OutputTerminal_t;
+
+ /** \brief Audio Class Specific Streaming Audio Interface Descriptor.
+ *
+ * Type define for an Audio class specific streaming interface descriptor. This indicates to the host
+ * how audio streams within the device are formatted. See the USB Audio specification for more details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+ uint8_t TerminalLink; /**< ID value of the output terminal this descriptor is describing */
+
+ uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output */
+ uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification */
+ } USB_Audio_Interface_AS_t;
+
+ /** \brief 24-Bit Audio Frequency Structure.
+ *
+ * Type define for a 24bit audio sample frequency structure. GCC does not contain a built in 24bit datatype,
+ * this this structure is used to build up the value instead. Fill this structure with the SAMPLE_FREQ() macro.
+ */
+ typedef struct
+ {
+ uint16_t LowWord; /**< Low 16 bits of the 24-bit value */
+ uint8_t HighByte; /**< Upper 8 bits of the 24-bit value */
+ } USB_Audio_SampleFreq_t;
+
+ /** \brief Audio Class Specific Format Descriptor.
+ *
+ * Type define for an Audio class specific audio format descriptor. This is used to give the host full details
+ * about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
+ * in the device's audio streams. See the USB Audio specification for more details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+ uint8_t FormatType; /**< Format of the audio stream, see Audio Device Formats specification */
+ uint8_t Channels; /**< Total number of discrete channels in the stream */
+
+ uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream */
+ uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream */
+
+ uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device */
+ USB_Audio_SampleFreq_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES]; /**< Sample frequencies supported by the device */
+ } USB_Audio_Format_t;
+
+ /** \brief Audio Class Specific Streaming Endpoint Descriptor.
+ *
+ * Type define for an Audio class specific endpoint descriptor. This contains a regular endpoint
+ * descriptor with a few Audio-class specific extensions. See the USB Audio specification for more details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
+
+ uint8_t Refresh; /**< Always set to zero */
+ uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronization information to, if needed (zero otherwise) */
+ } USB_Audio_StreamEndpoint_Std_t;
+
+ /** \brief Audio Class Specific Extended Endpoint Descriptor.
+ *
+ * Type define for an Audio class specific extended endpoint descriptor. This contains extra information
+ * on the usage of endpoints used to stream audio in and out of the USB Audio device, and follows an Audio
+ * class specific extended endpoint descriptor. See the USB Audio specification for more details.
+ */
+ typedef struct
+ {
+ USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length */
+ uint8_t Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+ uint8_t Attributes; /**< Audio class specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS */
+
+ uint8_t LockDelayUnits; /**< Units used for the LockDelay field, see Audio class specification */
+ uint16_t LockDelay; /**< Time required to internally lock endpoint's internal clock recovery circuitry */
+ } USB_Audio_StreamEndpoint_Spc_t;
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-29 23:41:18 +0000