/***************************************************************************
 * 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_endpoints_get                  PORTABLE C      */
/*                                                           6.1          */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Chaoqiong Xiao, Microsoft Corporation                               */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    This function searches for the handle of the isochronous endpoints. */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    video                                 Pointer to video class        */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    Completion Status                                                   */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*    _ux_host_stack_interface_endpoint_get Get interface endpoint        */
/*    _ux_system_error_handler              Log system error              */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    Video Class                                                         */
/*                                                                        */
/**************************************************************************/
UINT  _ux_host_class_video_endpoints_get(UX_HOST_CLASS_VIDEO *video)
{

UINT            status;
UINT            endpoint_index;
UX_ENDPOINT     *endpoint;


    /* Search the ISO OUT endpoint. It is attached to the interface container.  */
    for (endpoint_index = 0; endpoint_index < video -> ux_host_class_video_streaming_interface -> ux_interface_descriptor.bNumEndpoints;
         endpoint_index++)
    {

        /* Get interface endpoint.  */
        status =  _ux_host_stack_interface_endpoint_get(video -> ux_host_class_video_streaming_interface, endpoint_index, &endpoint);

        /* Check completion status.  */
        if (status == UX_SUCCESS)
        {

            /* Check if endpoint is iso and OUT.  */
            if (((endpoint -> ux_endpoint_descriptor.bEndpointAddress & UX_ENDPOINT_DIRECTION) == UX_ENDPOINT_OUT) &&
                ((endpoint -> ux_endpoint_descriptor.bmAttributes & UX_MASK_ENDPOINT_TYPE) == UX_ISOCHRONOUS_ENDPOINT))
            {

                /* We have found the bulk endpoint, save it.  */
                video -> ux_host_class_video_isochronous_endpoint =  endpoint;
                break;
            }
        }
    }

    /* The isochronous endpoint is mandatory. If we didn't find it, return an error.  */
    if (video -> ux_host_class_video_isochronous_endpoint == UX_NULL)
    {

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

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

        return(UX_ENDPOINT_HANDLE_UNKNOWN);
    }

    /* Return successful status.  */
    return(UX_SUCCESS);
}

