1 /***************************************************************************
2 * Copyright (c) 2024 Microsoft Corporation
3 *
4 * This program and the accompanying materials are made available under the
5 * terms of the MIT License which is available at
6 * https://opensource.org/licenses/MIT.
7 *
8 * SPDX-License-Identifier: MIT
9 **************************************************************************/
10
11
12 /**************************************************************************/
13 /**************************************************************************/
14 /** */
15 /** GUIX Component */
16 /** */
17 /** Win32 Display Management (Display) */
18 /** */
19 /**************************************************************************/
20 #ifdef WIN32
21 #include "tx_api.h"
22 #include "gx_api.h"
23 #include "gx_system.h"
24 #include "gx_display.h"
25 #include "windows.h"
26 #include "gx_win32_display_driver.h"
27
28 /**************************************************************************/
29 /* */
30 /* FUNCTION RELEASE */
31 /* */
32 /* win32_565rgb_bitmap_header_create PORTABLE C */
33 /* 6.1.3 */
34 /* AUTHOR */
35 /* */
36 /* Kenneth Maxwell, Microsoft Corporation */
37 /* */
38 /* DESCRIPTION */
39 /* */
40 /* This function creates bitmap header for 565rgb driver. */
41 /* */
42 /* INPUT */
43 /* */
44 /* display Pointer to GX_DISPLAY */
45 /* */
46 /* OUTPUT */
47 /* */
48 /* None */
49 /* */
50 /* CALLS */
51 /* */
52 /* None */
53 /* */
54 /* CALLED BY */
55 /* */
56 /* win32_graphics_driver_setup_565rgb */
57 /* */
58 /* RELEASE HISTORY */
59 /* */
60 /* DATE NAME DESCRIPTION */
61 /* */
62 /* 12-31-2020 Kenneth Maxwell Initial Version 6.1.3 */
63 /* */
64 /**************************************************************************/
win32_565rgb_bitmap_header_create(GX_DISPLAY * display)65 static void win32_565rgb_bitmap_header_create(GX_DISPLAY *display)
66 {
67 DWORD *putmask;
68
69 GX_WIN32_DISPLAY_DRIVER_DATA *instance = (GX_WIN32_DISPLAY_DRIVER_DATA *)display -> gx_display_driver_data;
70
71 instance -> win32_driver_bmpinfo.gx_bmp_header.biSize = sizeof(BITMAPINFOHEADER);
72 instance -> win32_driver_bmpinfo.gx_bmp_header.biWidth = display -> gx_display_width;
73 instance -> win32_driver_bmpinfo.gx_bmp_header.biHeight = display -> gx_display_height;
74
75 instance -> win32_driver_bmpinfo.gx_bmp_header.biPlanes = 1;
76 instance -> win32_driver_bmpinfo.gx_bmp_header.biBitCount = 16;
77 instance -> win32_driver_bmpinfo.gx_bmp_header.biSizeImage = display -> gx_display_width * display -> gx_display_height * 2;
78 instance -> win32_driver_bmpinfo.gx_bmp_header.biClrUsed = 65535;
79 instance -> win32_driver_bmpinfo.gx_bmp_header.biClrImportant = 65535;
80 instance -> win32_driver_bmpinfo.gx_bmp_header.biCompression = BI_BITFIELDS;
81
82 putmask = (DWORD *)&(instance -> win32_driver_bmpinfo.gx_bmp_colors[0]);
83
84 *putmask++ = 0x0000f800;
85 *putmask++ = 0x000007e0;
86 *putmask = 0x0000001f;
87 }
88
89 /**************************************************************************/
90 /* */
91 /* FUNCTION RELEASE */
92 /* */
93 /* win32_graphics_driver_setup_565rgb PORTABLE C */
94 /* 6.1.10 */
95 /* AUTHOR */
96 /* */
97 /* Kenneth Maxwell, Microsoft Corporation */
98 /* */
99 /* DESCRIPTION */
100 /* */
101 /* This function creates a Windows specific 565rgb display driver. */
102 /* */
103 /* INPUT */
104 /* */
105 /* display Pointer to GX_DISPLAY */
106 /* */
107 /* OUTPUT */
108 /* */
109 /* status Completion status */
110 /* */
111 /* CALLS */
112 /* */
113 /* _gx_display_driver_565rgb_setup guix display setup funciton. */
114 /* win32_565rgb_bitmap_header_create Create bitmap header info */
115 /* gx_win32_get_free_data_instance Get display data instance */
116 /* GX_WIN32_EVENT_THREAD_CREATE Create event thread */
117 /* */
118 /* CALLED BY */
119 /* */
120 /* Application Code */
121 /* */
122 /* RELEASE HISTORY */
123 /* */
124 /* DATE NAME DESCRIPTION */
125 /* */
126 /* 12-31-2020 Kenneth Maxwell Initial Version 6.1.3 */
127 /* 01-31-2022 Ting Zhu Modified comment(s), */
128 /* improved logic, */
129 /* resulting in version 6.1.10 */
130 /* */
131 /**************************************************************************/
win32_graphics_driver_setup_565rgb(GX_DISPLAY * display)132 UINT win32_graphics_driver_setup_565rgb(GX_DISPLAY *display)
133 {
134 GX_WIN32_DISPLAY_DRIVER_DATA *data;
135
136 /* Initialize the low-level drawing function pointers.
137
138 For windows, these are always just the generic funcions,
139 but for some hardware, these will be customized,
140 optimized functions specific to that hardware. */
141
142 data = gx_win32_get_free_data_instance();
143 if (!data)
144 {
145 /* we don't have any free display data instance */
146 return(GX_FAILURE);
147 }
148
149 /* Save off the format of display driver.*/
150 data -> win32_driver_type = GX_COLOR_FORMAT_565RGB;
151
152 _gx_display_driver_565rgb_setup(display, data, gx_win32_display_buffer_toggle);
153
154 /* Create bitmap header for 565rgb display driver. */
155 win32_565rgb_bitmap_header_create(display);
156
157 /* Create the GUIX / Windows event thread
158 This thread is a substitute for a touch display
159 or keyboard driver thread that would be running
160 on embedded hardware. */
161 GX_WIN32_EVENT_THREAD_CREATE(data, "GUI-WIN32-565rgb");
162
163 return(GX_SUCCESS);
164 }
165 #endif /* WIN32 */
166
167
