diff options
Diffstat (limited to 'Demos/Device/LowLevel/AudioOutput/Descriptors.h')
| -rw-r--r-- | Demos/Device/LowLevel/AudioOutput/Descriptors.h | 254 |
1 files changed, 11 insertions, 243 deletions
diff --git a/Demos/Device/LowLevel/AudioOutput/Descriptors.h b/Demos/Device/LowLevel/AudioOutput/Descriptors.h index c8b43b617..d5b11b377 100644 --- a/Demos/Device/LowLevel/AudioOutput/Descriptors.h +++ b/Demos/Device/LowLevel/AudioOutput/Descriptors.h @@ -42,95 +42,6 @@ #include <avr/pgmspace.h> /* Macros: */ - /** Audio class descriptor subtype value for a Audio class specific header descriptor. */ - #define DSUBTYPE_AudioHeader 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) - /** Endpoint number of the Audio isochronous streaming data endpoint. */ #define AUDIO_STREAM_EPNUM 1 @@ -144,165 +55,23 @@ #define AUDIO_SAMPLE_FREQUENCY 48000 /* Type Defines: */ - /** 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; - - /** 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; - - /** 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; - - /** 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; - - /** 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; - - /** 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 */ - } Audio_SampleFreq_t; - - /** 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 */ - Audio_SampleFreq_t SampleFrequencies[1]; /**< Sample frequencies supported by the device */ - } USB_Audio_Format_t; - - /** 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; - - /** 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; - /** Type define for the device configuration descriptor structure. This must be defined in the * application code, as the configuration descriptor contains several sub-descriptors which * vary between devices, and which describe the device's usage to the host. */ typedef struct { - USB_Descriptor_Configuration_Header_t Config; - USB_Descriptor_Interface_t Audio_ControlInterface; - USB_Audio_Interface_AC_t Audio_ControlInterface_SPC; - USB_Audio_InputTerminal_t Audio_InputTerminal; - USB_Audio_OutputTerminal_t Audio_OutputTerminal; - USB_Descriptor_Interface_t Audio_StreamInterface_Alt0; - USB_Descriptor_Interface_t Audio_StreamInterface_Alt1; - USB_Audio_Interface_AS_t Audio_StreamInterface_SPC; - USB_Audio_Format_t Audio_AudioFormat; - USB_Audio_StreamEndpoint_Std_t Audio_StreamEndpoint; - USB_Audio_StreamEndpoint_Spc_t Audio_StreamEndpoint_SPC; + USB_Descriptor_Configuration_Header_t Config; + USB_Descriptor_Interface_t Audio_ControlInterface; + USB_Audio_Descriptor_Interface_AC_t Audio_ControlInterface_SPC; + USB_Audio_Descriptor_InputTerminal_t Audio_InputTerminal; + USB_Audio_Descriptor_OutputTerminal_t Audio_OutputTerminal; + USB_Descriptor_Interface_t Audio_StreamInterface_Alt0; + USB_Descriptor_Interface_t Audio_StreamInterface_Alt1; + USB_Audio_Descriptor_Interface_AS_t Audio_StreamInterface_SPC; + USB_Audio_Descriptor_Format_t Audio_AudioFormat; + USB_Audio_Descriptor_StreamEndpoint_Std_t Audio_StreamEndpoint; + USB_Audio_Descriptor_StreamEndpoint_Spc_t Audio_StreamEndpoint_SPC; } USB_Descriptor_Configuration_t; /* Function Prototypes: */ @@ -312,4 +81,3 @@ ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3); #endif - |