- /** 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)
- #define CHANNEL_RIGHT_FRONT (1 << 1)
- #define CHANNEL_CENTER_FRONT (1 << 2)
- #define CHANNEL_LOW_FREQ_ENHANCE (1 << 3)
- #define CHANNEL_LEFT_SURROUND (1 << 4)
- #define CHANNEL_RIGHT_SURROUND (1 << 5)
- #define CHANNEL_LEFT_OF_CENTER (1 << 6)
- #define CHANNEL_RIGHT_OF_CENTER (1 << 7)
- #define CHANNEL_SURROUND (1 << 8)
- #define CHANNEL_SIDE_LEFT (1 << 9)
- #define CHANNEL_SIDE_RIGHT (1 << 10)
- #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)
- #define FEATURE_VOLUME (1 << 1)
- #define FEATURE_BASS (1 << 2)
- #define FEATURE_MID (1 << 3)
- #define FEATURE_TREBLE (1 << 4)
- #define FEATURE_GRAPHIC_EQUALIZER (1 << 5)
- #define FEATURE_AUTOMATIC_GAIN (1 << 6)
- #define FEATURE_DELAY (1 << 7)
- #define FEATURE_BASS_BOOST (1 << 8)
- #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
- #define TERMINAL_STREAMING 0x0101
- #define TERMINAL_VENDOR 0x01FF
- #define TERMINAL_IN_UNDEFINED 0x0200
- #define TERMINAL_IN_MIC 0x0201
- #define TERMINAL_IN_DESKTOP_MIC 0x0202
- #define TERMINAL_IN_PERSONAL_MIC 0x0203
- #define TERMINAL_IN_OMNIDIR_MIC 0x0204
- #define TERMINAL_IN_MIC_ARRAY 0x0205
- #define TERMINAL_IN_PROCESSING_MIC 0x0206
- #define TERMINAL_IN_OUT_UNDEFINED 0x0300
- #define TERMINAL_OUT_SPEAKER 0x0301
- #define TERMINAL_OUT_HEADPHONES 0x0302
- #define TERMINAL_OUT_HEAD_MOUNTED 0x0303
- #define TERMINAL_OUT_DESKTOP 0x0304
- #define TERMINAL_OUT_ROOM 0x0305
- #define TERMINAL_OUT_COMMUNICATION 0x0306
- #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 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)
-