f1076ac4d6
Added parameter directions to function parameter documentation. Added new experimental FAST_STREAM_FUNCTIONS compile time option to speed up stream transfers at the expense of a higher FLASH consumption (needs testing to verify improved throughput).
164 lines
No EOL
4.3 KiB
C
164 lines
No EOL
4.3 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#include "../../HighLevel/USBMode.h"
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#if defined(USB_CAN_BE_DEVICE)
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#include "Audio.h"
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void Audio_Device_ProcessControlPacket(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
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{
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if (!(Endpoint_IsSETUPReceived()))
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return;
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if (USB_ControlRequest.wIndex != AudioInterfaceInfo->Config.StreamingInterfaceNumber)
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return;
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switch (USB_ControlRequest.bRequest)
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{
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case REQ_SetInterface:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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AudioInterfaceInfo->State.InterfaceEnabled = (USB_ControlRequest.wValue != 0);
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while (!(Endpoint_IsINReady()));
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Endpoint_ClearIN();
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}
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break;
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}
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}
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bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_Device_t* AudioInterfaceInfo)
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{
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if (AudioInterfaceInfo->Config.DataINEndpointNumber)
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{
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if (!(Endpoint_ConfigureEndpoint(AudioInterfaceInfo->Config.DataINEndpointNumber, EP_TYPE_ISOCHRONOUS,
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ENDPOINT_DIR_IN, AudioInterfaceInfo->Config.DataINEndpointSize,
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ENDPOINT_BANK_DOUBLE)))
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{
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return false;
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}
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}
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if (AudioInterfaceInfo->Config.DataOUTEndpointNumber)
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{
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if (!(Endpoint_ConfigureEndpoint(AudioInterfaceInfo->Config.DataOUTEndpointNumber, EP_TYPE_ISOCHRONOUS,
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ENDPOINT_DIR_OUT, AudioInterfaceInfo->Config.DataOUTEndpointSize,
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ENDPOINT_BANK_DOUBLE)))
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{
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return false;
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}
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}
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return true;
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}
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void Audio_Device_USBTask(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
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{
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}
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int8_t Audio_Device_ReadSample8(void)
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{
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int8_t Sample;
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Sample = Endpoint_Read_Byte();
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if (!(Endpoint_IsReadWriteAllowed()))
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Endpoint_ClearOUT();
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return Sample;
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}
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int16_t Audio_Device_ReadSample16(void)
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{
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int16_t Sample;
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Sample = (int16_t)Endpoint_Read_Word_LE();
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if (!(Endpoint_IsReadWriteAllowed()))
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Endpoint_ClearOUT();
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return Sample;
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}
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int32_t Audio_Device_ReadSample24(void)
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{
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int32_t Sample;
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Sample = (((uint32_t)Endpoint_Read_Byte() << 16) | Endpoint_Read_Word_LE());
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if (!(Endpoint_IsReadWriteAllowed()))
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Endpoint_ClearOUT();
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return Sample;
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}
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void Audio_Device_WriteSample8(const int8_t Sample)
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{
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Endpoint_Write_Byte(Sample);
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if (!(Endpoint_IsReadWriteAllowed()))
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Endpoint_ClearIN();
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}
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void Audio_Device_WriteSample16(const int16_t Sample)
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{
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Endpoint_Write_Word_LE(Sample);
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if (!(Endpoint_IsReadWriteAllowed()))
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Endpoint_ClearIN();
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}
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void Audio_Device_WriteSample24(const int32_t Sample)
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{
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Endpoint_Write_Byte(Sample >> 16);
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Endpoint_Write_Word_LE(Sample);
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if (!(Endpoint_IsReadWriteAllowed()))
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Endpoint_ClearIN();
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}
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bool Audio_Device_IsSampleReceived(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
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{
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Endpoint_SelectEndpoint(AudioInterfaceInfo->Config.DataOUTEndpointNumber);
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return Endpoint_IsOUTReceived();
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}
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bool Audio_Device_IsReadyForNextSample(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
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{
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Endpoint_SelectEndpoint(AudioInterfaceInfo->Config.DataINEndpointNumber);
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return Endpoint_IsINReady();
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}
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#endif |