X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/da138684e428a40f7f5a0c32617e5c62c9e3a664..16ea5aa7a2e5f326f8ff129e740a19bb3fb7829f:/LUFA/Drivers/USB/Class/Device/MIDI.h diff --git a/LUFA/Drivers/USB/Class/Device/MIDI.h b/LUFA/Drivers/USB/Class/Device/MIDI.h index 66330a1d4..8517782e2 100644 --- a/LUFA/Drivers/USB/Class/Device/MIDI.h +++ b/LUFA/Drivers/USB/Class/Device/MIDI.h @@ -1,21 +1,21 @@ /* LUFA Library - Copyright (C) Dean Camera, 2009. + Copyright (C) Dean Camera, 2010. dean [at] fourwalledcubicle [dot] com www.fourwalledcubicle.com */ /* - Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) - - Permission to use, copy, modify, and distribute this software - and its documentation for any purpose and without fee is hereby - granted, 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 + 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 @@ -68,11 +68,13 @@ { uint8_t StreamingInterfaceNumber; /**< Index of the Audio Streaming interface within the device this structure controls */ - uint8_t DataINEndpointNumber; /**< Endpoint number of the incomming MIDI data, if available (zero if unused) */ - uint16_t DataINEndpointSize; /**< Size in bytes of the incomming MIDI data endpoint, if available (zero if unused) */ + uint8_t DataINEndpointNumber; /**< Endpoint number of the incoming MIDI data, if available (zero if unused) */ + uint16_t DataINEndpointSize; /**< Size in bytes of the incoming MIDI data endpoint, if available (zero if unused) */ + bool DataINEndpointDoubleBank; /** Indicates if the MIDI interface's IN data endpoint should use double banking */ uint8_t DataOUTEndpointNumber; /**< Endpoint number of the outgoing MIDI data, if available (zero if unused) */ uint16_t DataOUTEndpointSize; /**< Size in bytes of the outgoing MIDI data endpoint, if available (zero if unused) */ + bool DataOUTEndpointDoubleBank; /** Indicates if the MIDI interface's IN data endpoint should use double banking */ } Config; /**< Config data for the USB class interface within the device. All elements in this section * must be set or the interface will fail to enumerate and operate correctly. */ @@ -80,51 +82,78 @@ { // No state information for this class yet } State; /**< State data for the USB class interface within the device. All elements in this section - * may be set to initial values, but may also be ignored to default to sane values when - * the interface is enumerated. + * are reset to their defaults when the interface is enumerated. */ } USB_ClassInfo_MIDI_Device_t; /* Function Prototypes: */ /** Configures the endpoints of a given MIDI interface, ready for use. This should be linked to the library - * \ref EVENT_USB_ConfigurationChanged() event so that the endpoints are configured when the configuration + * \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration * containing the given MIDI interface is selected. * - * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state. + * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state * - * \return Boolean true if the endpoints were sucessfully configured, false otherwise + * \return Boolean true if the endpoints were successfully configured, false otherwise */ - bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo); + bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1); - /** Processes incomming control requests from the host, that are directed to the given MIDI class interface. This should be - * linked to the library \ref EVENT_USB_UnhandledControlPacket() event. + /** Processes incoming control requests from the host, that are directed to the given MIDI class interface. This should be + * linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event. * - * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state. + * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state */ - void MIDI_Device_ProcessControlPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo); + void MIDI_Device_ProcessControlRequest(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1); - /** General management task for a given MIDI class interface, required for the correct operation of the interface. This should - * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask(). + /** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded. Events are queued into the + * endpoint bank until either the endpoint bank is full, or \ref MIDI_Device_Flush() is called. This allows for multiple + * MIDI events to be packed into a single endpoint packet, increasing data throughput. + * + * \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or + * the call will fail. + * + * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state + * \param[in] Event Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send * - * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state. + * \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum */ - void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo); + uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, + MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2); + - /** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded. + /** Flushes the MIDI send buffer, sending any queued MIDI events to the host. This should be called to override the + * \ref MIDI_Device_SendEventPacket() function's packing behaviour, to flush queued events. * - * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state. - * \param[in] Event Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send + * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state + * + * \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum */ - void MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event); + uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo); - /** Receives a MIDI event packet from the host. + /** Receives a MIDI event packet from the host. Events are unpacked from the endpoint, thus if the endpoint bank contains + * multiple MIDI events from the host in the one packet, multiple calls to this function will return each individual event. * - * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state. + * \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or + * the call will fail. + * + * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state * \param[out] Event Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed * * \return Boolean true if a MIDI event packet was received, false otherwise */ - bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, MIDI_EventPacket_t* const Event); + bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo, + MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2); + + /* Inline Functions: */ + /** General management task for a given MIDI class interface, required for the correct operation of the interface. This should + * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask(). + * + * \param[in,out] MIDIInterfaceInfo Pointer to a structure containing a MIDI Class configuration and state + */ + static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo); + static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) + { + (void)MIDIInterfaceInfo; + } /* Disable C linkage for C++ Compilers: */ #if defined(__cplusplus)