1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
*
* mga_vid_test.c
*
* Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
* Sept 1999
*
* This software has been released under the terms of the GNU Public
* license. See http://www.gnu.org/copyleft/gpl.html for details.
*/
//#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <inttypes.h>
#include <string.h>
#include "mga_vid.h"
mga_vid_config_t config;
uint8_t *mga_vid_base;
uint32_t is_g400;
#define SRC_IMAGE_WIDTH 256
#define SRC_IMAGE_HEIGHT 256
uint8_t y_image[SRC_IMAGE_WIDTH * SRC_IMAGE_HEIGHT];
uint8_t cr_image[SRC_IMAGE_WIDTH * SRC_IMAGE_HEIGHT];
uint8_t cb_image[SRC_IMAGE_WIDTH * SRC_IMAGE_HEIGHT];
void
write_frame_g200(uint8_t *y,uint8_t *cr, uint8_t *cb)
{
uint8_t *dest;
uint32_t bespitch,h,w;
dest = mga_vid_base;
bespitch = (config.src_width + 31) & ~31;
for(h=0; h < config.src_height; h++)
{
memcpy(dest, y, config.src_width);
y += config.src_width;
dest += bespitch;
}
for(h=0; h < config.src_height/2; h++)
{
for(w=0; w < config.src_width/2; w++)
{
*dest++ = *cb++;
*dest++ = *cr++;
}
dest += bespitch - config.src_width;
}
}
void
write_frame_g400(uint8_t *y,uint8_t *cr, uint8_t *cb)
{
uint8_t *dest;
uint32_t bespitch,h;
dest = mga_vid_base;
bespitch = (config.src_width + 31) & ~31;
for(h=0; h < config.src_height; h++)
{
memcpy(dest, y, config.src_width);
y += config.src_width;
dest += bespitch;
}
for(h=0; h < config.src_height/2; h++)
{
memcpy(dest, cb, config.src_width/2);
cb += config.src_width/2;
dest += bespitch/2;
}
for(h=0; h < config.src_height/2; h++)
{
memcpy(dest, cr, config.src_width/2);
cr += config.src_width/2;
dest += bespitch/2;
}
}
void write_frame(uint8_t *y,uint8_t *cr, uint8_t *cb)
{
if(is_g400)
write_frame_g400(y,cr,cb);
else
write_frame_g200(y,cr,cb);
}
void
draw_cool_pattern(void)
{
int i,x,y;
i = 0;
for (y=0; y<config.src_height; y++) {
for (x=0; x<config.src_width; x++) {
y_image[i++] = x*x/2 + y*y/2 - 128;
}
}
i = 0;
for (y=0; y<config.src_height/2; y++)
for (x=0; x<config.src_width/2; x++)
{
cr_image[i++] = x - 128;
}
i = 0;
for (y=0; y<config.src_height/2; y++)
for (x=0; x<config.src_width/2; x++)
{
cb_image[i++] = y - 128;
}
}
void
draw_color_blend(void)
{
int i,x,y;
i = 0;
for (y=0; y<config.src_height; y++) {
for (x=0; x<config.src_width; x++) {
y_image[i++] = 0;
}
}
i = 0;
for (y=0; y<config.src_height/2; y++)
for (x=0; x<config.src_width/2; x++)
{
cr_image[i++] = x - 128;
}
i = 0;
for (y=0; y<config.src_height/2; y++)
for (x=0; x<config.src_width/2; x++)
{
cb_image[i++] = y - 128;
}
}
int
main(int argc, char *argv[])
{
int f;
f = open("/dev/mga_vid",O_RDWR);
if(f == -1)
{
fprintf(stderr,"Couldn't open driver\n");
exit(1);
}
config.version = MGA_VID_VERSION;
config.src_width = SRC_IMAGE_WIDTH;
config.src_height= SRC_IMAGE_HEIGHT;
config.dest_width = SRC_IMAGE_WIDTH;
config.dest_height = SRC_IMAGE_HEIGHT;
config.x_org= 10;
config.y_org= 10;
config.colkey_on = 0;
config.format = MGA_VID_FORMAT_YV12;
config.frame_size=SRC_IMAGE_WIDTH*SRC_IMAGE_HEIGHT*2;
config.num_frames=1;
if (ioctl(f,MGA_VID_CONFIG,&config))
{
perror("Error in config ioctl");
}
if (config.card_type == MGA_G200)
{
printf("Testing MGA G200 Backend Scaler with %d MB of RAM\n", config.ram_size);
is_g400 = 0;
}
else
{
printf("Testing MGA G400 Backend Scaler with %d MB of RAM\n", config.ram_size);
is_g400 = 1;
}
ioctl(f,MGA_VID_ON,0);
mga_vid_base = (uint8_t*)mmap(0,256 * 4096,PROT_WRITE,MAP_SHARED,f,0);
printf("mga_vid_base = %8p\n",mga_vid_base);
//memset(y_image,80,256 * 128);
//memset(cr_image,80,256/2 * 20);
//memset(cb_image,80,256/2 * 20);
write_frame(y_image,cr_image,cb_image);
printf("(1) There should be a green square, offset by 10 pixels from\n"
" the upper left corner displayed\n");
sleep(3);
draw_cool_pattern();
write_frame(y_image,cr_image,cb_image);
printf("(2) There should be a cool mosaic like pattern now.\n");
sleep(3);
draw_color_blend();
write_frame(y_image,cr_image,cb_image);
printf("(3) There should be a color blend with black, red, purple, blue\n"
" corners (starting top left going CW)\n");
sleep(3);
ioctl(f,MGA_VID_OFF,0);
close(f);
return 0;
}
|
