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/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2026-present Eclipse ThreadX contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** USBX Component */
/** */
/** Device Audio Class */
/** */
/**************************************************************************/
/**************************************************************************/
#define UX_SOURCE_CODE
/* Include necessary system files. */
#include "ux_api.h"
#include "ux_device_class_audio.h"
#include "ux_device_stack.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_device_class_audio_control_request PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function manages the based sent by the host on the control */
/* endpoints with a CLASS or VENDOR SPECIFIC type. */
/* */
/* INPUT */
/* */
/* command Pointer to class command */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_device_stack_endpoint_stall Endpoint stall */
/* */
/* CALLED BY */
/* */
/* Device Audio Class */
/* */
/**************************************************************************/
UINT _ux_device_class_audio_control_request(UX_SLAVE_CLASS_COMMAND *command)
{
UX_SLAVE_TRANSFER *transfer_request;
UX_SLAVE_DEVICE *device;
UX_SLAVE_CLASS *class_ptr;
UX_DEVICE_CLASS_AUDIO *audio;
/* Get the class container. */
class_ptr = command -> ux_slave_class_command_class_ptr;
/* Get the audio instance from this class container. */
audio = (UX_DEVICE_CLASS_AUDIO *) class_ptr -> ux_slave_class_instance;
/* Get the pointer to the device. */
device = &_ux_system_slave -> ux_system_slave_device;
/* Get the pointer to the transfer request associated with the control endpoint. */
transfer_request = &device -> ux_slave_device_control_endpoint.ux_slave_endpoint_transfer_request;
/* Invoke callback. */
if (audio -> ux_device_class_audio_callbacks.ux_device_class_audio_control_process != UX_NULL)
{
/* Handled by callback. */
return audio -> ux_device_class_audio_callbacks.ux_device_class_audio_control_process(audio, transfer_request);
}
/* Not handled. */
return(UX_ERROR);
}
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