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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_device_class_pima.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _ux_pictbridge_dpsclient_object_data_get PORTABLE C */
/* 6.1.12 */
/* AUTHOR */
/* */
/* Chaoqiong Xiao, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function returns the data of the object. */
/* */
/* INPUT */
/* */
/* pima Pima instance associated */
/* */
/* OUTPUT */
/* */
/* Completion Status */
/* */
/* CALLS */
/* */
/* */
/* CALLED BY */
/* */
/* user application */
/* */
/**************************************************************************/
UINT _ux_pictbridge_dpsclient_object_data_get(UX_SLAVE_CLASS_PIMA *pima, ULONG object_handle, UCHAR *object_buffer, ULONG object_offset,
ULONG object_length_requested, ULONG *object_actual_length)
{
UX_PICTBRIDGE *pictbridge;
UX_SLAVE_CLASS_PIMA_OBJECT *object_info;
UCHAR *pima_object_buffer;
ULONG actual_length;
UINT status;
/* Get the pointer to the Pictbridge instance. */
pictbridge = (UX_PICTBRIDGE *)pima -> ux_device_class_pima_application;
/* Check the object handle. If this is handle 1 or 2 , we need to return the XML script object.
If the handle is not 1 or 2, this is a JPEG picture or other object to be printed. */
if ((object_handle == UX_PICTBRIDGE_OBJECT_HANDLE_HOST_RESPONSE) || (object_handle == UX_PICTBRIDGE_OBJECT_HANDLE_CLIENT_REQUEST))
{
/* Check what XML object is requested. It is either a request script or a response. */
if (object_handle == UX_PICTBRIDGE_OBJECT_HANDLE_HOST_RESPONSE)
object_info = (UX_SLAVE_CLASS_PIMA_OBJECT *) pictbridge -> ux_pictbridge_object_host;
else
object_info = (UX_SLAVE_CLASS_PIMA_OBJECT *) pictbridge -> ux_pictbridge_object_client;
/* Is this the correct handle ? */
if (object_info -> ux_device_class_pima_object_handle_id == object_handle)
{
/* Get the pointer to the object buffer. */
pima_object_buffer = object_info -> ux_device_class_pima_object_buffer;
/* Copy the demanded object data portion. */
_ux_utility_memory_copy(object_buffer, pima_object_buffer + object_offset, object_length_requested); /* Use case of memcpy is verified. */
/* Update the length requested. for a demo, we do not do any checking. */
*object_actual_length = object_length_requested;
/* What cycle are we in ? */
if (pictbridge -> ux_pictbridge_host_client_state_machine & UX_PICTBRIDGE_STATE_MACHINE_HOST_REQUEST)
{
/* Check if we are blocking for a client request. */
if (pictbridge -> ux_pictbridge_host_client_state_machine & UX_PICTBRIDGE_STATE_MACHINE_CLIENT_REQUEST_PENDING)
/* Yes we are pending, send an event to release the pending request. */
_ux_system_event_flags_set(&pictbridge -> ux_pictbridge_event_flags_group, UX_PICTBRIDGE_EVENT_FLAG_STATE_MACHINE_READY, UX_OR);
/* Since we are in host request, this indicates we are done with the cycle. */
pictbridge -> ux_pictbridge_host_client_state_machine = UX_PICTBRIDGE_STATE_MACHINE_IDLE;
}
/* We have copied the requested data. Return OK. */
return(UX_SUCCESS);
}
}
else
{
/* Obtain the data from the application jobinfo callback. */
status = pictbridge -> ux_pictbridge_jobinfo.ux_pictbridge_jobinfo_object_data_read(pictbridge, object_handle, object_buffer, object_offset,
object_length_requested, &actual_length);
/* Save the length returned. */
*object_actual_length = actual_length;
/* Return the application status. */
return(status);
}
/* Could not find the handle. */
return(UX_DEVICE_CLASS_PIMA_RC_INVALID_OBJECT_HANDLE);
}
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