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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_deactivate PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function deactivate an instance of the audio class. */
/* */
/* INPUT */
/* */
/* command Pointer to a class command */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* _ux_device_stack_transfer_all_request_abort */
/* Abort all transfers */
/* */
/* CALLED BY */
/* */
/* Device Audio Class */
/* */
/**************************************************************************/
UINT _ux_device_class_audio_deactivate(UX_SLAVE_CLASS_COMMAND *command)
{
UX_DEVICE_CLASS_AUDIO *audio;
UX_DEVICE_CLASS_AUDIO_STREAM *stream;
UX_SLAVE_ENDPOINT *endpoint;
UX_SLAVE_CLASS *class_ptr;
UINT i;
/* Get the class container. */
class_ptr = command -> ux_slave_class_command_class_ptr;
/* Get the class instance in the container. */
audio = (UX_DEVICE_CLASS_AUDIO *) class_ptr -> ux_slave_class_instance;
/* Stop pending streams. */
stream = audio -> ux_device_class_audio_streams;
for (i = 0; i < audio -> ux_device_class_audio_streams_nb; i ++)
{
/* Locate the endpoint. */
endpoint = stream -> ux_device_class_audio_stream_endpoint;
/* Terminate the transactions pending on the endpoint. */
if (endpoint)
_ux_device_stack_transfer_all_request_abort(endpoint, UX_TRANSFER_BUS_RESET);
/* Free the stream. */
stream -> ux_device_class_audio_stream_endpoint = UX_NULL;
stream -> ux_device_class_audio_stream_interface = UX_NULL;
stream ++;
}
/* Free the control. */
audio -> ux_device_class_audio_interface = UX_NULL;
/* If there is a deactivate function call it. */
if (audio -> ux_device_class_audio_callbacks.ux_slave_class_audio_instance_deactivate != UX_NULL)
/* Invoke the application. */
audio -> ux_device_class_audio_callbacks.ux_slave_class_audio_instance_deactivate(audio);
/* Return completion status. */
return(UX_SUCCESS);
}
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