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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 */
/** */
/** 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);
}
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