/***************************************************************************
 * 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                                                        */
/**                                                                       */
/**   Video Class                                                         */
/**                                                                       */
/**************************************************************************/
/**************************************************************************/


/* Include necessary system files.  */

#define UX_SOURCE_CODE

#include "ux_api.h"
#include "ux_host_class_video.h"
#include "ux_host_stack.h"


/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _ux_host_class_video_entry                          PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Chaoqiong Xiao, Microsoft Corporation                               */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function is the entry point of the Video class. It will be     */
/*    called by the USBX stack enumeration module when there is a new     */
/*    video device (speaker, microphone ...) on the bus or when the video */
/*    device is removed.                                                  */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    command                               Pointer to command            */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    Completion Status                                                   */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _ux_host_class_video_activate         Activate video class          */
/*    _ux_host_class_video_deactivate       Deactivate video class        */
/*    _ux_system_error_handler              Log system error              */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Host Stack                                                          */
/*                                                                        */
/**************************************************************************/
UINT  _ux_host_class_video_entry(UX_HOST_CLASS_COMMAND *command)
{

UINT        status = UX_SUCCESS;


    /* The command request will tell us we need to do here, either a enumeration
       query, an activation or a deactivation.  */
    switch (command -> ux_host_class_command_request)
    {


    case UX_HOST_CLASS_COMMAND_QUERY:

        /* The query command is used to let the stack enumeration process know if we want to own
           this device or not.  */
        if ((command -> ux_host_class_command_usage == UX_HOST_CLASS_COMMAND_USAGE_CSP) &&
            (command -> ux_host_class_command_class == UX_HOST_CLASS_VIDEO_CLASS))
            status = UX_SUCCESS;
        else
            status = UX_NO_CLASS_MATCH;
        break;

    case UX_HOST_CLASS_COMMAND_ACTIVATE:

        /* The activate command is used when the device inserted has found a parent and
           is ready to complete the enumeration.   */
        status =  _ux_host_class_video_activate(command);

        break;


    case UX_HOST_CLASS_COMMAND_DEACTIVATE:

        /* The deactivate command is used when the device has been extracted either
           directly or when its parents has been extracted.  */
        status =  _ux_host_class_video_deactivate(command);

        break;


    default:

        /* Error trap. */
        _ux_system_error_handler(UX_SYSTEM_LEVEL_THREAD, UX_SYSTEM_CONTEXT_CLASS, UX_FUNCTION_NOT_SUPPORTED);

        /* If trace is enabled, insert this event into the trace buffer.  */
        //UX_TRACE_IN_LINE_INSERT(UX_TRACE_ERROR, UX_FUNCTION_NOT_SUPPORTED, 0, 0, 0, UX_TRACE_ERRORS, 0, 0)

        status = UX_FUNCTION_NOT_SUPPORTED;
    }

    return(status);
}

