diff options
Diffstat (limited to 'LUFA/Drivers/USB/Class/Device/Audio.c')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Device/Audio.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/Audio.c b/LUFA/Drivers/USB/Class/Device/Audio.c new file mode 100644 index 000000000..b0800ba0f --- /dev/null +++ b/LUFA/Drivers/USB/Class/Device/Audio.c @@ -0,0 +1,154 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2009.
+
+ 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
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+#include "Audio.h"
+
+void USB_Audio_ProcessControlPacket(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
+{
+ if (!(Endpoint_IsSETUPReceived()))
+ return;
+
+// if (USB_ControlRequest.wIndex != AudioInterfaceInfo->InterfaceNumber)
+// return;
+
+ switch (USB_ControlRequest.bRequest)
+ {
+ case REQ_SetInterface:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+
+ AudioInterfaceInfo->InterfaceEnabled = (USB_ControlRequest.wValue != 0);
+
+ while (!(Endpoint_IsINReady()));
+ Endpoint_ClearIN();
+ }
+
+ break;
+ }
+}
+
+bool USB_Audio_ConfigureEndpoints(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
+{
+ if (AudioInterfaceInfo->DataINEndpointNumber)
+ {
+ if (!(Endpoint_ConfigureEndpoint(AudioInterfaceInfo->DataINEndpointNumber, EP_TYPE_ISOCHRONOUS,
+ ENDPOINT_DIR_IN, AudioInterfaceInfo->DataINEndpointSize,
+ ENDPOINT_BANK_DOUBLE)))
+ {
+ return false;
+ }
+ }
+
+ if (AudioInterfaceInfo->DataOUTEndpointNumber)
+ {
+ if (!(Endpoint_ConfigureEndpoint(AudioInterfaceInfo->DataOUTEndpointNumber, EP_TYPE_ISOCHRONOUS,
+ ENDPOINT_DIR_OUT, AudioInterfaceInfo->DataOUTEndpointSize,
+ ENDPOINT_BANK_DOUBLE)))
+ {
+ return false;
+ }
+ }
+
+ return true;
+}
+
+int8_t USB_Audio_ReadSample8(void)
+{
+ int8_t Sample;
+
+ Sample = Endpoint_Read_Byte();
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearOUT();
+
+ return Sample;
+}
+
+int16_t USB_Audio_ReadSample16(void)
+{
+ int16_t Sample;
+
+ Sample = (int16_t)Endpoint_Read_Word_LE();
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearOUT();
+
+ return Sample;
+}
+
+int32_t USB_Audio_ReadSample24(void)
+{
+ int32_t Sample;
+
+ Sample = (((uint32_t)Endpoint_Read_Byte() << 16) | Endpoint_Read_Word_LE());
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearOUT();
+
+ return Sample;
+}
+
+void USB_Audio_WriteSample8(int8_t Sample)
+{
+ Endpoint_Write_Byte(Sample);
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearIN();
+}
+
+void USB_Audio_WriteSample16(int16_t Sample)
+{
+ Endpoint_Write_Word_LE(Sample);
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearIN();
+}
+
+void USB_Audio_WriteSample24(int32_t Sample)
+{
+ Endpoint_Write_Byte(Sample >> 16);
+ Endpoint_Write_Word_LE(Sample);
+
+ if (!(Endpoint_IsReadWriteAllowed()))
+ Endpoint_ClearIN();
+}
+
+bool USB_Audio_IsSampleReceived(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
+{
+ Endpoint_SelectEndpoint(AudioInterfaceInfo->DataOUTEndpointNumber);
+ return Endpoint_IsOUTReceived();
+}
+
+bool USB_Audio_IsReadyForNextSample(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
+{
+ Endpoint_SelectEndpoint(AudioInterfaceInfo->DataINEndpointNumber);
+ return Endpoint_IsINReady();
+}
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