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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 */
/** */
/** Pictbridge Application */
/** */
/**************************************************************************/
/**************************************************************************/
/* Include necessary system files. */
#define UX_SOURCE_CODE
#include "ux_api.h"
#include "ux_pictbridge.h"
#include "ux_host_class_pima.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_pictbridge_dpshost_response_get PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function obtains a response. */
/* */
/* INPUT */
/* */
/* pictbridge Pictbridge instance */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* */
/* CALLED BY */
/* */
/* _ux_pictbridge_dpshost_thread */
/* */
/**************************************************************************/
UINT _ux_pictbridge_dpshost_response_get(UX_PICTBRIDGE *pictbridge)
{
UINT status;
UX_HOST_CLASS_PIMA *pima;
UX_HOST_CLASS_PIMA_SESSION *pima_session;
UX_HOST_CLASS_PIMA_OBJECT *pima_object;
ULONG object_length;
ULONG requested_length;
ULONG actual_length;
UCHAR *object_buffer;
UCHAR object_file_name[UX_PICTBRIDGE_MAX_FILE_NAME_SIZE + 1]; /* +1 for null-terminator */
ULONG object_handle;
UX_PICTBRIDGE_EVENT *pictbridge_event;
UINT length, length1;
/* Get the pima instance from the pictbridge container. */
pima = (UX_HOST_CLASS_PIMA *) pictbridge -> ux_pictbridge_pima;
/* And now the session since we use it. */
pima_session = (UX_HOST_CLASS_PIMA_SESSION *) pictbridge -> ux_pictbridge_session;
/* Get the address of the object container. */
pima_object = (UX_HOST_CLASS_PIMA_OBJECT *) pictbridge -> ux_pictbridge_object_host;
/* Wait for the semaphore to be put by the root hub or a regular hub. */
_ux_system_semaphore_get_norc(&pictbridge -> ux_pictbridge_notification_semaphore, UX_WAIT_FOREVER);
/* Check if there is an event. Normally there should be at least one since we got awaken. */
if (pictbridge -> ux_pictbridge_event_array_tail != pictbridge -> ux_pictbridge_event_array_head)
{
/* Get the current event tail. */
pictbridge_event = pictbridge -> ux_pictbridge_event_array_tail;
/* Analyze the event type. */
switch (pictbridge_event -> ux_pictbridge_event_code)
{
/* The DSC client is informing us that an object is ready. */
case UX_PICTBRIDGE_EC_OBJECT_ADDED :
case UX_PICTBRIDGE_EC_REQUEST_OBJECT_TRANSFER :
/* Obtain the object handle. */
object_handle = pictbridge_event -> ux_pictbridge_event_parameter_1;
break;
default :
return(UX_ERROR);
}
/* Compute the next entry in the event array. */
if ((pictbridge -> ux_pictbridge_event_array_tail + 1) == pictbridge -> ux_pictbridge_event_array_end)
/* Start at the beginning of the list. */
pictbridge_event = pictbridge -> ux_pictbridge_event_array;
else
/* Point to the next entry in the event array. */
pictbridge_event = pictbridge -> ux_pictbridge_event_array_tail + 1;
/* Now, store the new event tail. */
pictbridge -> ux_pictbridge_event_array_tail = pictbridge_event;
}
else
/* We have an error. Got awaken for nothing ! */
return(UX_ERROR);
/* Get the object info structure. */
status = _ux_host_class_pima_object_info_get(pima, pima_session,
object_handle, pima_object);
if (status != UX_SUCCESS)
{
/* Return an error. */
return(UX_PICTBRIDGE_ERROR_INVALID_OBJECT_HANDLE);
}
/* Check if this is a script. If the object is not a script or does not contain the
File Name we expect, we ignore it. */
if (pima_object -> ux_host_class_pima_object_format == UX_HOST_CLASS_PIMA_OFC_SCRIPT)
{
/* Yes this is a script. We need to search for the DRSPONSE.DPS file name.
Get the file name length (with null-terminator). */
length1 = (UINT)(*pima_object -> ux_host_class_pima_object_filename);
/* Check the file name from this script. It should be in the form DRSPONSE.DPS. */
if (length1 <= UX_PICTBRIDGE_MAX_FILE_NAME_SIZE)
{
/* Invalidate length, on error it's untouched. */
length = UX_PICTBRIDGE_MAX_FILE_NAME_SIZE + 1;
_ux_utility_string_length_check(_ux_pictbridge_drsponse_name, &length, UX_PICTBRIDGE_MAX_FILE_NAME_SIZE);
if ((length + 1) == length1)
{
/* Get the file name in a ascii format (with null-terminator). */
_ux_utility_unicode_to_string(pima_object -> ux_host_class_pima_object_filename, object_file_name);
/* So far, the length of name of the files are the same.
Compare names now (since length is same just compare without null-terminator). */
if (_ux_utility_memory_compare(_ux_pictbridge_drsponse_name, object_file_name,
length) == UX_SUCCESS)
{
/* Yes this is a script. Get the entire object in memory. */
/* Get script length from the object info. */
object_length = pima_object -> ux_host_class_pima_object_compressed_size;
/* Check for overflow. */
if (object_length > UX_PICTBRIDGE_MAX_PIMA_OBJECT_BUFFER)
return(UX_PICTBRIDGE_ERROR_SCRIPT_BUFFER_OVERFLOW);
/* Open the object. */
status = _ux_host_class_pima_object_open(pima, pima_session, object_handle, pima_object);
/* Check status. */
if (status != UX_SUCCESS)
return(status);
/* Set the object buffer pointer. */
object_buffer = pima_object -> ux_host_class_pima_object_buffer;
/* Obtain all the object data. */
while(object_length != 0)
{
/* Calculate what length to request. */
if (object_length > UX_PICTBRIDGE_MAX_PIMA_OBJECT_BUFFER)
/* Request maximum length. */
requested_length = UX_PICTBRIDGE_MAX_PIMA_OBJECT_BUFFER;
else
/* Request remaining length. */
requested_length = object_length;
/* Get the object data. */
status = _ux_host_class_pima_object_get(pima, pima_session, object_handle, pima_object,
object_buffer, requested_length, &actual_length);
if (status != UX_SUCCESS)
{
/* We had a problem, abort the transfer. */
_ux_host_class_pima_object_transfer_abort(pima, pima_session, object_handle, pima_object);
/* And close the object. */
_ux_host_class_pima_object_close(pima, pima_session, object_handle, pima_object);
return(status);
}
/* We have received some data, update the length remaining. */
object_length -= actual_length;
/* Update the buffer address. */
object_buffer += actual_length;
}
/* Close the object. */
status = _ux_host_class_pima_object_close(pima, pima_session, object_handle, pima_object);
/* Check the error. */
if (status != UX_SUCCESS)
return(UX_PICTBRIDGE_ERROR_INVALID_OBJECT_HANDLE);
/* We now have the entire script into memory. Parse the object and execute the script. */
status = _ux_pictbridge_object_parse(pictbridge, pima_object -> ux_host_class_pima_object_buffer,
pima_object -> ux_host_class_pima_object_compressed_size);
/* Analyze the status from the parsing and determine the result code. */
switch (status)
{
case UX_SUCCESS :
/* Set the result code to OK. */
pictbridge -> ux_pictbridge_operation_result = UX_PICTBRIDGE_ACTION_RESULT_OK;
break;
case UX_PICTBRIDGE_ERROR_SCRIPT_SYNTAX_ERROR :
/* Set the result code to Error. */
pictbridge -> ux_pictbridge_operation_result = UX_PICTBRIDGE_ACTION_RESULT_NOT_SUPPORTED_IP;
break;
case UX_PICTBRIDGE_ERROR_PARAMETER_UNKNOWN :
/* Set the result code to Error. */
pictbridge -> ux_pictbridge_operation_result = UX_PICTBRIDGE_ACTION_RESULT_NOT_SUPPORTED_UP;
break;
case UX_PICTBRIDGE_ERROR_PARAMETER_MISSING :
/* Set the result code to Error. */
pictbridge -> ux_pictbridge_operation_result = UX_PICTBRIDGE_ACTION_RESULT_NOT_SUPPORTED_MP;
break;
default :
/* Set the result code to Error. */
pictbridge -> ux_pictbridge_operation_result = UX_PICTBRIDGE_ACTION_RESULT_NOT_SUPPORTED_DEFAULT;
break;
}
if (status != UX_SUCCESS)
return(status);
}
}
}
}
return(UX_SUCCESS);
}
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