1 /**************************************************************************/
2 /* */
3 /* Copyright (c) Microsoft Corporation. All rights reserved. */
4 /* */
5 /* This software is licensed under the Microsoft Software License */
6 /* Terms for Microsoft Azure RTOS. Full text of the license can be */
7 /* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */
8 /* and in the root directory of this software. */
9 /* */
10 /**************************************************************************/
11
12
13 /**************************************************************************/
14 /**************************************************************************/
15 /** */
16 /** GUIX Component */
17 /** */
18 /** Display management (Display) */
19 /** */
20 /**************************************************************************/
21
22 #define GX_SOURCE_CODE
23
24
25 /* Include necessary system files. */
26
27 #include "gx_api.h"
28 #include "gx_display.h"
29
30 /* Bring in externs for caller checking code. */
31 GX_CALLER_CHECKING_EXTERNS
32
33 /**************************************************************************/
34 /* */
35 /* FUNCTION RELEASE */
36 /* */
37 /* _gxe_display_create PORTABLE C */
38 /* 6.1 */
39 /* AUTHOR */
40 /* */
41 /* Kenneth Maxwell, Microsoft Corporation */
42 /* */
43 /* DESCRIPTION */
44 /* */
45 /* This function checks for errors in the display create function */
46 /* call. */
47 /* */
48 /* INPUT */
49 /* */
50 /* display Display control block */
51 /* name Name of display */
52 /* display_driver_setup Display driver setup function */
53 /* width Display width in pixels */
54 /* height Display height in pixels */
55 /* display_control_block_size Size of the display control */
56 /* block */
57 /* */
58 /* OUTPUT */
59 /* */
60 /* status Completion status */
61 /* */
62 /* CALLS */
63 /* */
64 /* _gx_display_create Actual display create */
65 /* function */
66 /* */
67 /* CALLED BY */
68 /* */
69 /* Application Code */
70 /* */
71 /* RELEASE HISTORY */
72 /* */
73 /* DATE NAME DESCRIPTION */
74 /* */
75 /* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
76 /* 09-30-2020 Kenneth Maxwell Modified comment(s), */
77 /* resulting in version 6.1 */
78 /* */
79 /**************************************************************************/
_gxe_display_create(GX_DISPLAY * display,GX_CONST GX_CHAR * name,UINT (* display_driver_setup)(GX_DISPLAY *),GX_VALUE width,GX_VALUE height,UINT display_control_block_size)80 UINT _gxe_display_create(GX_DISPLAY *display, GX_CONST GX_CHAR *name,
81 UINT (*display_driver_setup)(GX_DISPLAY *),
82 GX_VALUE width, GX_VALUE height, UINT display_control_block_size)
83 {
84 UINT status;
85
86 /* Check for appropriate caller. */
87 GX_INIT_AND_THREADS_CALLER_CHECKING
88
89 /* Check for invalid input pointers. */
90 if ((display == GX_NULL) || (display_driver_setup == GX_NULL))
91 {
92 return(GX_PTR_ERROR);
93 }
94
95 if (display_control_block_size != sizeof(GX_DISPLAY))
96 {
97 return(GX_INVALID_SIZE);
98 }
99
100 if (display -> gx_display_id == GX_DISPLAY_ID)
101 {
102 return (GX_ALREADY_CREATED);
103 }
104
105 /* Call actual window create function. */
106 status = _gx_display_create(display, name, display_driver_setup, width, height);
107
108 /* Return completion status. */
109 return(status);
110 }
111
112
