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[pub/USBasp.git] / 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 87aabe1..8517782 100644 (file)
--- a/LUFA/Drivers/USB/Class/Device/MIDI.h
+++ b/LUFA/Drivers/USB/Class/Device/MIDI.h
@@ -1,21 +1,21 @@
 /*\r
              LUFA Library\r
 /*\r
              LUFA Library\r

-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r

               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r

-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r

   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r


@@ -31,6 +31,10 @@
 /** \ingroup Group_USBClassMIDI\r
  *  @defgroup Group_USBClassMIDIDevice MIDI Class Device Mode Driver\r
  *\r
 /** \ingroup Group_USBClassMIDI\r
  *  @defgroup Group_USBClassMIDIDevice MIDI Class Device Mode Driver\r
  *\r

+ *  \section Sec_Dependencies Module Source Dependencies\r
+ *  The following files must be built with any user project that uses this module:\r
+ *    - LUFA/Drivers/USB/Class/Device/MIDI.c\r
+ *\r

  *  \section Module Description\r
  *  Device Mode USB Class driver framework interface, for the MIDI USB Class driver.\r
  *\r
  *  \section Module Description\r
  *  Device Mode USB Class driver framework interface, for the MIDI USB Class driver.\r
  *\r


@@ -53,46 +57,103 @@
                #endif\r
 \r
        /* Public Interface - May be used in end-application: */\r
                #endif\r
 \r
        /* Public Interface - May be used in end-application: */\r

+               /* Type Define: */\r
+                       /** Class state structure. An instance of this structure should be made for each MIDI interface\r
+                        *  within the user application, and passed to each of the MIDI class driver functions as the\r
+                        *  MIDIInterfaceInfo parameter. This stores each MIDI interface's configuration and state information.\r
+                        */\r
+                       typedef struct\r
+                       {\r
+                               const struct\r
+                               {\r
+                                       uint8_t  StreamingInterfaceNumber; /**< Index of the Audio Streaming interface within the device this structure controls */\r
+\r
+                                       uint8_t  DataINEndpointNumber; /**< Endpoint number of the incoming MIDI data, if available (zero if unused) */\r
+                                       uint16_t DataINEndpointSize; /**< Size in bytes of the incoming MIDI data endpoint, if available (zero if unused) */\r
+                                       bool     DataINEndpointDoubleBank; /** Indicates if the MIDI interface's IN data endpoint should use double banking */\r
+\r
+                                       uint8_t  DataOUTEndpointNumber; /**< Endpoint number of the outgoing MIDI data, if available (zero if unused) */\r
+                                       uint16_t DataOUTEndpointSize; /**< Size in bytes of the outgoing MIDI data endpoint, if available (zero if unused) */\r
+                                       bool     DataOUTEndpointDoubleBank; /** Indicates if the MIDI interface's IN data endpoint should use double banking */\r
+                               } Config; /**< Config data for the USB class interface within the device. All elements in this section\r
+                                          *   <b>must</b> be set or the interface will fail to enumerate and operate correctly.\r
+                                          */                                                                    \r
+                               struct\r
+                               {\r
+                                       // No state information for this class yet\r
+                               } State; /**< State data for the USB class interface within the device. All elements in this section\r
+                                         *   are reset to their defaults when the interface is enumerated.\r
+                                         */\r
+                       } USB_ClassInfo_MIDI_Device_t;  \r
+       \r

                /* Function Prototypes: */\r
                        /** Configures the endpoints of a given MIDI interface, ready for use. This should be linked to the library\r
                /* Function Prototypes: */\r
                        /** Configures the endpoints of a given MIDI interface, ready for use. This should be linked to the library\r

-                        *  \ref EVENT_USB_ConfigurationChanged() event so that the endpoints are configured when the configuration\r
+                        *  \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration\r

                         *  containing the given MIDI interface is selected.\r
                         *\r
                         *  containing the given MIDI interface is selected.\r
                         *\r

-                        *  \param MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state.\r
+                        *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state\r

                         *\r
                         *\r

-                        *  \return Boolean true if the endpoints were sucessfully configured, false otherwise\r
+                        *  \return Boolean true if the endpoints were successfully configured, false otherwise\r

                         */\r
                         */\r

-                       bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);\r
+                       bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r

                        \r
                        \r

-                       /** Processes incomming control requests from the host, that are directed to the given MIDI class interface. This should be\r
-                        *  linked to the library \ref EVENT_USB_UnhandledControlPacket() event.\r
+                       /** Processes incoming control requests from the host, that are directed to the given MIDI class interface. This should be\r
+                        *  linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.\r

                         *\r
                         *\r

-                        *  \param MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state.\r
+                        *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state\r

                         */             \r
                         */             \r

-                       void MIDI_Device_ProcessControlPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);\r
+                       void MIDI_Device_ProcessControlRequest(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r

 \r
 \r

-                       /** General management task for a given MIDI class interface, required for the correct operation of the interface. This should\r
-                        *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().\r
+                       /** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded. Events are queued into the\r
+                        *  endpoint bank until either the endpoint bank is full, or \ref MIDI_Device_Flush() is called. This allows for multiple\r
+                        *  MIDI events to be packed into a single endpoint packet, increasing data throughput.\r
+                        *\r
+                        *  \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or\r
+                        *        the call will fail.\r
+                        *\r
+                        *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state\r
+                        *  \param[in] Event  Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send\r

                         *\r
                         *\r

-                        *  \param MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state.\r
+                        *  \return A value from the \ref Endpoint_Stream_RW_ErrorCodes_t enum                   \r

                         */\r
                         */\r

-                       void MIDI_Device_USBTask(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo);\r
+                       uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,\r
+                                                           MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r

 \r
 \r

-                       /** Sends a MIDI event packet to the host. If no host is connected, the event packet is discarded.\r
+\r
+                       /** Flushes the MIDI send buffer, sending any queued MIDI events to the host. This should be called to override the\r
+                        *  \ref MIDI_Device_SendEventPacket() function's packing behaviour, to flush queued events.\r
+                        *\r
+                        *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state\r

                         *\r
                         *\r

-                        *  \param MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state.\r
-                        *  \param Event  Pointer to a populated USB_MIDI_EventPacket_t structure containing the MIDI event to send\r
+                        *  \return A value from the \ref Endpoint_WaitUntilReady_ErrorCodes_t enum\r

                         */\r
                         */\r

-                       void MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event);\r
+                       uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo);\r

 \r
 \r

-                       /** Receives a MIDI event packet from the host.\r
+                       /** Receives a MIDI event packet from the host. Events are unpacked from the endpoint, thus if the endpoint bank contains\r
+                        *  multiple MIDI events from the host in the one packet, multiple calls to this function will return each individual event.\r

                         *\r
                         *\r

-                        *  \param MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state.\r
-                        *  \param Event  Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed\r
+                        *  \note This function must only be called when the Device state machine is in the DEVICE_STATE_Configured state or\r
+                        *        the call will fail.\r
+                        *\r
+                        *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state\r
+                        *  \param[out] Event  Pointer to a USB_MIDI_EventPacket_t structure where the received MIDI event is to be placed\r

                         *\r
                         *  \return Boolean true if a MIDI event packet was received, false otherwise\r
                         */\r
                         *\r
                         *  \return Boolean true if a MIDI event packet was received, false otherwise\r
                         */\r

-                       bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_t* MIDIInterfaceInfo, USB_MIDI_EventPacket_t* Event);\r
+                       bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,\r
+                                                           MIDI_EventPacket_t* const Event) ATTR_NON_NULL_PTR_ARG(1) ATTR_NON_NULL_PTR_ARG(2);\r
+\r
+               /* Inline Functions: */\r
+                       /** General management task for a given MIDI class interface, required for the correct operation of the interface. This should\r
+                        *  be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().\r
+                        *\r
+                        *  \param[in,out] MIDIInterfaceInfo  Pointer to a structure containing a MIDI Class configuration and state\r
+                        */\r
+                       static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo);\r
+                       static inline void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)\r
+                       {\r
+                               (void)MIDIInterfaceInfo;\r
+                       }               \r

 \r
        /* Disable C linkage for C++ Compilers: */\r
                #if defined(__cplusplus)\r
 \r
        /* Disable C linkage for C++ Compilers: */\r
                #if defined(__cplusplus)\r