mga_vid_test.c
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上传日期:2007-01-06
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文件大小:4k
- /*
- *
- * 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 <stdlib.h>
- #include <stdio.h>
- #include <sys/ioctl.h>
- #include <unistd.h>
- #include <fcntl.h>
- #include <sys/mman.h>
- #include "mga_vid.h"
- //#define MGA_G200
- #define MGA_G400
- mga_vid_config_t config;
- uint_8 *mga_vid_base;
- uint_32 is_g400;
- #define SRC_IMAGE_WIDTH 256
- #define SRC_IMAGE_HEIGHT 256
- uint_8 y_image[SRC_IMAGE_WIDTH * SRC_IMAGE_HEIGHT];
- uint_8 cr_image[SRC_IMAGE_WIDTH * SRC_IMAGE_HEIGHT];
- uint_8 cb_image[SRC_IMAGE_WIDTH * SRC_IMAGE_HEIGHT];
- void
- write_frame_g200(uint_8 *y,uint_8 *cr, uint_8 *cb)
- {
- uint_8 *dest;
- uint_32 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(uint_8 *y,uint_8 *cr, uint_8 *cb)
- {
- uint_8 *dest;
- uint_32 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(uint_8 *y,uint_8 *cr, uint_8 *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;
- if(argv[0][strlen(argv[0]) - 3] == '4')
- {
- is_g400 = 1;
- printf("Testing MGA G400 Backend Scalern");
- }
- else
- {
- is_g400 = 0;
- printf("Testing MGA G200 Backend Scalern");
- }
- f = open("/dev/mga_vid",O_RDWR);
- if(f == -1)
- {
- fprintf(stderr,"Couldn't open drivern");
- exit(1);
- }
- 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;
- if (ioctl(f,MGA_VID_CONFIG,&config))
- {
- perror("Error in config ioctl");
- }
-
- ioctl(f,MGA_VID_ON,0);
- mga_vid_base = (uint_8*)mmap(0,256 * 4096,PROT_WRITE,MAP_SHARED,f,0);
- printf("mga_vid_base = %8pn",mga_vid_base);
- write_frame(y_image,cr_image,cb_image);
- printf("(1) There should be a green square, offset by 10 pixels fromn"
- " the upper left corner displayedn");
- 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, bluen"
- " corners (starting top left going CW)n");
- sleep(3);
- ioctl(f,MGA_VID_OFF,0);
- close(f);
- return 0;
- }