Add new MediaController project, a simple Media Playback control manipulator (Play/Pause/Next Track/Volume/etc.).

1 files changed, 246 insertions, 0 deletions

diff --git a/Projects/MediaController/Descriptors.c b/Projects/MediaController/Descriptors.c
new file mode 100644
index 000000000..8ad3b0a70
--- /dev/null
+++ b/Projects/MediaController/Descriptors.c
@@ -0,0 +1,246 @@
+/*

+             LUFA Library

+     Copyright (C) Dean Camera, 2011.

+

+  dean [at] fourwalledcubicle [dot] com

+           www.lufa-lib.org

+*/

+

+/*

+  Copyright 2011  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

+  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.

+*/

+

+/** \file

+ *

+ *  USB Device Descriptors, for library use when in USB device mode. Descriptors are special

+ *  computer-readable structures which the host requests upon device enumeration, to determine

+ *  the device's capabilities and functions.

+ */

+

+#include "Descriptors.h"

+

+/** HID class report descriptor. This is a special descriptor constructed with values from the

+ *  USBIF HID class specification to describe the reports and capabilities of the HID device. This

+ *  descriptor is parsed by the host and its contents used to determine what data (and in what encoding)

+ *  the device will send, and what it may be sent back from the host. Refer to the HID specification for

+ *  more details on HID report descriptors.

+ */

+const USB_Descriptor_HIDReport_Datatype_t PROGMEM MediaControlReport[] =

+{

+	HID_RI_USAGE_PAGE(8, 0x0C), /* Consumer Page */

+	HID_RI_USAGE(8, 0x01), /* Consumer Controls */

+	HID_RI_COLLECTION(8, 0x01), /* Application */

+		HID_RI_USAGE_MINIMUM(8, 0xB0),

+		HID_RI_USAGE_MAXIMUM(8, 0xB7),

+		HID_RI_LOGICAL_MINIMUM(8, 0),

+		HID_RI_LOGICAL_MAXIMUM(8, 1),

+		HID_RI_REPORT_SIZE(8, 0x01),

+		HID_RI_REPORT_COUNT(8, 0x08),

+		HID_RI_INPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE),

+		HID_RI_USAGE(8, 0xCD),

+		HID_RI_USAGE(8, 0xE2),

+		HID_RI_USAGE(8, 0xE9),

+		HID_RI_USAGE(8, 0xEA),

+		HID_RI_REPORT_COUNT(8, 0x04),

+		HID_RI_INPUT(8, HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE),

+		HID_RI_REPORT_COUNT(8, 0x04),

+		HID_RI_INPUT(8, HID_IOF_CONSTANT),

+	HID_RI_END_COLLECTION(0),

+};

+

+/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall

+ *  device characteristics, including the supported USB version, control endpoint size and the

+ *  number of device configurations. The descriptor is read out by the USB host when the enumeration

+ *  process begins.

+ */

+const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =

+{

+	.Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},

+

+	.USBSpecification       = VERSION_BCD(01.10),

+	.Class                  = USB_CSCP_NoDeviceClass,

+	.SubClass               = USB_CSCP_NoDeviceSubclass,

+	.Protocol               = USB_CSCP_NoDeviceProtocol,

+

+	.Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,

+

+	.VendorID               = 0x03EB,

+	.ProductID              = 0x206A,

+	.ReleaseNumber          = VERSION_BCD(00.01),

+

+	.ManufacturerStrIndex   = 0x01,

+	.ProductStrIndex        = 0x02,

+	.SerialNumStrIndex      = NO_DESCRIPTOR,

+

+	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS

+};

+

+/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage

+ *  of the device in one of its supported configurations, including information about any device interfaces

+ *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting

+ *  a configuration so that the host may correctly communicate with the USB device.

+ */

+const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =

+{

+	.Config =

+		{

+			.Header                 = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},

+

+			.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),

+			.TotalInterfaces        = 1,

+

+			.ConfigurationNumber    = 1,

+			.ConfigurationStrIndex  = NO_DESCRIPTOR,

+

+			.ConfigAttributes       = (USB_CONFIG_ATTR_BUSPOWERED | USB_CONFIG_ATTR_SELFPOWERED),

+

+			.MaxPowerConsumption    = USB_CONFIG_POWER_MA(100)

+		},

+

+	.HID_Interface =

+		{

+			.Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},

+

+			.InterfaceNumber        = 0x00,

+			.AlternateSetting       = 0x00,

+

+			.TotalEndpoints         = 1,

+

+			.Class                  = HID_CSCP_HIDClass,

+			.SubClass               = HID_CSCP_NonBootSubclass,

+			.Protocol               = HID_CSCP_NonBootProtocol,

+

+			.InterfaceStrIndex      = NO_DESCRIPTOR

+		},

+

+	.HID_MediaControlHID =

+		{

+			.Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},

+

+			.HIDSpec                = VERSION_BCD(01.11),

+			.CountryCode            = 0x00,

+			.TotalReportDescriptors = 1,

+			.HIDReportType          = HID_DTYPE_Report,

+			.HIDReportLength        = sizeof(MediaControlReport)

+		},

+

+	.HID_ReportINEndpoint =

+		{

+			.Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},

+

+			.EndpointAddress        = (ENDPOINT_DESCRIPTOR_DIR_IN | MEDIACONTROL_HID_EPNUM),

+			.Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),

+			.EndpointSize           = MEDIACONTROL_HID_EPSIZE,

+			.PollingIntervalMS      = 0x01

+		},

+};

+

+/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests

+ *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate

+ *  via the language ID table available at USB.org what languages the device supports for its string descriptors.

+ */

+const USB_Descriptor_String_t PROGMEM LanguageString =

+{

+	.Header                 = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String},

+

+	.UnicodeString          = {LANGUAGE_ID_ENG}

+};

+

+/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable

+ *  form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device

+ *  Descriptor.

+ */

+const USB_Descriptor_String_t PROGMEM ManufacturerString =

+{

+	.Header                 = {.Size = USB_STRING_LEN(11), .Type = DTYPE_String},

+

+	.UnicodeString          = L"Dean Camera"

+};

+

+/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,

+ *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device

+ *  Descriptor.

+ */

+const USB_Descriptor_String_t PROGMEM ProductString =

+{

+	.Header                 = {.Size = USB_STRING_LEN(21), .Type = DTYPE_String},

+

+	.UnicodeString          = L"LUFA Media Controller"

+};

+

+/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"

+ *  documentation) by the application code so that the address and size of a requested descriptor can be given

+ *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function

+ *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the

+ *  USB host.

+ */

+uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,

+                                    const uint8_t wIndex,

+                                    const void** const DescriptorAddress)

+{

+	const uint8_t  DescriptorType   = (wValue >> 8);

+	const uint8_t  DescriptorNumber = (wValue & 0xFF);

+

+	const void* Address = NULL;

+	uint16_t    Size    = NO_DESCRIPTOR;

+

+	switch (DescriptorType)

+	{

+		case DTYPE_Device:

+			Address = &DeviceDescriptor;

+			Size    = sizeof(USB_Descriptor_Device_t);

+			break;

+		case DTYPE_Configuration:

+			Address = &ConfigurationDescriptor;

+			Size    = sizeof(USB_Descriptor_Configuration_t);

+			break;

+		case DTYPE_String:

+			switch (DescriptorNumber)

+			{

+				case 0x00:

+					Address = &LanguageString;

+					Size    = pgm_read_byte(&LanguageString.Header.Size);

+					break;

+				case 0x01:

+					Address = &ManufacturerString;

+					Size    = pgm_read_byte(&ManufacturerString.Header.Size);

+					break;

+				case 0x02:

+					Address = &ProductString;

+					Size    = pgm_read_byte(&ProductString.Header.Size);

+					break;

+			}

+

+			break;

+		case HID_DTYPE_HID:

+			Address = &ConfigurationDescriptor.HID_MediaControlHID;

+			Size    = sizeof(USB_HID_Descriptor_HID_t);

+			break;

+		case HID_DTYPE_Report:

+			Address = &MediaControlReport;

+			Size    = sizeof(MediaControlReport);

+			break;

+	}

+

+	*DescriptorAddress = Address;

+	return Size;

+}

+