Added usblib

1 files changed, 362 insertions, 0 deletions

diff --git a/usblib/device/usbdaudio.h b/usblib/device/usbdaudio.h
new file mode 100644
index 0000000..4406597
--- /dev/null
+++ b/usblib/device/usbdaudio.h
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+//*****************************************************************************

+//

+// usbdaudio.h - USB audio device class driver.

+//

+// Copyright (c) 2009-2012 Texas Instruments Incorporated.  All rights reserved.

+// Software License Agreement

+// 

+// Texas Instruments (TI) is supplying this software for use solely and

+// exclusively on TI's microcontroller products. The software is owned by

+// TI and/or its suppliers, and is protected under applicable copyright

+// laws. You may not combine this software with "viral" open-source

+// software in order to form a larger program.

+// 

+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.

+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT

+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY

+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL

+// DAMAGES, FOR ANY REASON WHATSOEVER.

+// 

+// This is part of revision 9453 of the Stellaris USB Library.

+//

+//*****************************************************************************

+

+#ifndef __USBDAUDIO_H__

+#define __USBDAUDIO_H__

+

+//*****************************************************************************

+//

+// If building with a C++ compiler, make all of the definitions in this header

+// have a C binding.

+//

+//*****************************************************************************

+#ifdef __cplusplus

+extern "C"

+{

+#endif

+

+//*****************************************************************************

+//

+//! \addtogroup audio_device_class_api

+//! @{

+//

+//*****************************************************************************

+

+typedef void (* tUSBAudioBufferCallback)(void *pvBuffer, unsigned long ulParam,

+                                         unsigned long ulEvent);

+

+//*****************************************************************************

+//

+// PRIVATE

+//

+// This structure defines the private instance data and state variables for the

+// audio device class.  The memory for this structure is pointed to by

+// the psPrivateData field in the tUSBDAudioDevice structure passed on

+// USBDAudioInit() and should not be modified by any code outside of the audio

+// device.

+//

+//*****************************************************************************

+typedef struct

+{

+    unsigned long ulUSBBase;

+    tDeviceInfo *psDevInfo;

+    tConfigDescriptor *psConfDescriptor;

+

+    //

+    // The maximum volume expressed as an 8.8 signed value.

+    //

+    short sVolumeMax;

+

+    //

+    // The minimum volume expressed as an 8.8 signed value.

+    //

+    short sVolumeMin;

+

+    //

+    // The minimum volume step expressed as an 8.8 signed value.

+    //

+    short sVolumeStep;

+

+    struct

+    {

+        //

+        // Pointer to a buffer provided by caller.

+        //

+        void *pvData;

+

+        //

+        // Size of the data area provided in pvData in bytes.

+        //

+        unsigned long ulSize;

+

+        //

+        // Number of valid bytes copied into the pvData area.

+        //

+        unsigned long ulNumBytes;

+

+        //

+        // The buffer callback for this function.

+        //

+        tUSBAudioBufferCallback pfnCallback;

+    } sBuffer;

+

+    //

+    // Pending request type.

+    //

+    unsigned short usRequestType;

+

+    //

+    // Pending request.

+    //

+    unsigned char ucRequest;

+

+    //

+    // Pending update value.

+    //

+    unsigned short usUpdate;

+

+    //

+    // Current Volume setting.

+    //

+    short sVolume;

+

+    //

+    // Current Mute setting.

+    //

+    unsigned char ucMute;

+

+    //

+    // Current Sample rate, this is not writable but the host will try.

+    //

+    unsigned long ulSampleRate;

+

+    //

+    // The OUT endpoint in use by this instance.

+    //

+    unsigned char ucOUTEndpoint;

+

+    //

+    // The OUT endpoint DMA channel in use by this instance.

+    //

+    unsigned char ucOUTDMA;

+

+    //

+    // The control interface number associated with this instance.

+    //

+    unsigned char ucInterfaceControl;

+

+    //

+    // The audio interface number associated with this instance.

+    //

+    unsigned char ucInterfaceAudio;

+}

+tAudioInstance;

+

+//*****************************************************************************

+//

+//! This is the size in bytes of the private data for the device audio class.

+//

+//*****************************************************************************

+#define USB_AUDIO_INSTANCE_SIZE sizeof(tAudioInstance);

+

+//*****************************************************************************

+//

+//! The size of the memory that should be allocated to create a configuration

+//! descriptor for a single instance of the USB Audio Device.

+//! This does not include the configuration descriptor which is automatically

+//! ignored by the composite device class.

+//

+// This value must be at least sizeof(g_pIADAudioDescriptor) +

+// sizeof(g_pAudioControlInterface) +

+// sizeof(g_sAudioStreamInterfaceSection)

+//

+//*****************************************************************************

+#define COMPOSITE_DAUDIO_SIZE   (8 + 52 + 52)

+

+//*****************************************************************************

+//

+//! The structure used by the application to define operating parameters for

+//! the device audio class.

+//

+//*****************************************************************************

+typedef struct

+{

+    //

+    //! The vendor ID that this device is to present in the device descriptor.

+    //

+    unsigned short usVID;

+

+    //

+    //! The product ID that this device is to present in the device descriptor.

+    //

+    unsigned short usPID;

+

+    //

+    //! 8 byte vendor string.

+    //

+    unsigned char pucVendor[8];

+

+    //

+    //! 16 byte vendor string.

+    //

+    unsigned char pucProduct[16];

+

+    //

+    //! 4 byte vendor string.

+    //

+    unsigned char pucVersion[4];

+

+    //

+    //! The maximum power consumption of the device, expressed in mA.

+    //

+    unsigned short usMaxPowermA;

+

+    //

+    //! Indicates whether the device is self or bus-powered and whether or not

+    //! it supports remote wake up.  Valid values are USB_CONF_ATTR_SELF_PWR or

+    //! USB_CONF_ATTR_BUS_PWR, optionally ORed with USB_CONF_ATTR_RWAKE.

+    //

+    unsigned char ucPwrAttributes;

+

+    //

+    //! A pointer to the callback function which will be called to notify

+    //! the application of events relating to the operation of the audio

+    //! device.

+    //

+    tUSBCallback pfnCallback;

+

+    //

+    //! A pointer to the string descriptor array for this device.  This array

+    //! must contain the following string descriptor pointers in this order.

+    //! Language descriptor, Manufacturer name string (language 1), Product

+    //! name string (language 1), Serial number string (language 1), Audio

+    //! Interface description string (language 1), Configuration description

+    //! string (language 1).

+    //!

+    //! If supporting more than 1 language, the descriptor block (except for

+    //! string descriptor 0) must be repeated for each language defined in the

+    //! language descriptor.

+    //!

+    //

+    const unsigned char * const *ppStringDescriptors;

+

+    //

+    //! The number of descriptors provided in the ppStringDescriptors

+    //! array.  This must be 1 + ((5 + (number of strings)) *

+    //!                           (number of languages)).

+    //

+    unsigned long ulNumStringDescriptors;

+

+    //

+    //! The maximum volume expressed as an 8.8 signed value.

+    //

+    short sVolumeMax;

+

+    //

+    //! The minimum volume expressed as an 8.8 signed value.

+    //

+    short sVolumeMin;

+

+    //

+    //! The minimum volume step expressed as an 8.8 signed value.

+    //

+    short sVolumeStep;

+

+    //

+    //! A pointer to private instance data for the audio device.  This memory

+    //! must remain accessible for as long as the audio device is in use and

+    //! must not be modified by any code outside the audio class driver.

+    //

+    tAudioInstance *psPrivateData;

+}

+tUSBDAudioDevice;

+

+//*****************************************************************************

+//

+// Audio specific device class driver events

+//

+//*****************************************************************************

+

+//*****************************************************************************

+//

+//! This USB audio event indicates that the device is connected but not active.

+//

+//*****************************************************************************

+#define USBD_AUDIO_EVENT_IDLE   (USBD_AUDIO_EVENT_BASE + 0)

+

+//*****************************************************************************

+//

+//! This USB audio event indicates that the device is connected and is now

+//! active.

+//

+//*****************************************************************************

+#define USBD_AUDIO_EVENT_ACTIVE (USBD_AUDIO_EVENT_BASE + 1)

+

+//*****************************************************************************

+//

+//! This USB audio event indicates that the device is returning a data buffer

+//! provided by the USBAudioBufferOut() function back to the application with

+//! valid audio data received from the USB host controller. The \e pvBuffer

+//! parameter holds the pointer to the buffer with the new audio data and

+//! the \e ulParam value holds the amount of valid data in bytes that are

+//! contained in the \e pvBuffer parameter.

+//

+//*****************************************************************************

+#define USBD_AUDIO_EVENT_DATAOUT (USBD_AUDIO_EVENT_BASE + 2)

+

+//*****************************************************************************

+//

+//! This USB audio event indicates that a volume change has occured.  The

+//! \e ulParam value contains a signed 8.8 fixed point value that represents

+//! the current volume gain/attenuation in decibels(dB).  The provided message

+//! handler should be prepared to handle negative and positive values with the

+//! value 0x8000 indicating maximum attenuation.  The \e pvBuffer parameter

+//! should be ignored.

+//

+//*****************************************************************************

+#define USBD_AUDIO_EVENT_VOLUME (USBD_AUDIO_EVENT_BASE + 4)

+

+//*****************************************************************************

+//

+//! This USB audio event indicates that a mute request has occured.  The

+//! \e ulParam value will either be a 1 to indicate that the audio is now

+//! muted, and a value of 0 indicates that the audio has been unmuted.

+//

+//*****************************************************************************

+#define USBD_AUDIO_EVENT_MUTE   (USBD_AUDIO_EVENT_BASE + 5)

+

+extern tDeviceInfo g_sAudioDeviceInfo;

+

+//*****************************************************************************

+//

+// API Function Prototypes

+//

+//*****************************************************************************

+extern void *USBDAudioInit(unsigned long ulIndex,

+                           const tUSBDAudioDevice *psAudioDevice);

+extern void *USBDAudioCompositeInit(unsigned long ulIndex,

+                                    const tUSBDAudioDevice *psAudioDevice);

+extern void USBDAudioTerm(void *pvInstance);

+extern long USBAudioBufferOut(void *pvInstance, void *pvBuffer,

+                              unsigned long ulSize,

+                              tUSBAudioBufferCallback pfnCallback);

+

+//*****************************************************************************

+//

+// Close the Doxygen group.

+//! @}

+//

+//*****************************************************************************

+

+//*****************************************************************************

+//

+// Mark the end of the C bindings section for C++ compilers.

+//

+//*****************************************************************************

+#ifdef __cplusplus

+}

+#endif

+

+#endif

+