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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 419 | lvd | 1 | #include <stdlib.h> |
| 2 | #include <stdio.h> |
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| 3 | #include <errno.h> |
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| 4 | |||
| 5 | #include <sys/types.h> |
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| 6 | #include <sys/socket.h> |
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| 7 | #include <arpa/inet.h> |
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| 8 | |||
| 9 | #if defined(_MSC_VER) |
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| 10 | #include "SDL.h" |
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| 11 | #else |
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| 12 | #include "SDL/SDL.h" |
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| 13 | #endif |
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| 14 | |||
| 15 | SDL_Surface *plane; |
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| 16 | |||
| 17 | |||
| 18 | void net_init(void); |
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| 19 | void net_recv(void); |
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| 20 | void parse_recv_data(char * buf,int bytes_read); |
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| 21 | void bufrender(void); |
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| 22 | |||
| 23 | void render(void); |
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| 24 | |||
| 25 | void exitt(int); |
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| 26 | |||
| 27 | #define SIZEX 896 |
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| 28 | #define SIZEY 640 |
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| 29 | #define BITSIZE 32 |
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| 30 | |||
| 31 | #define ZXSIZEX 1792 |
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| 32 | #define ZXSIZEY 320 |
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| 33 | |||
| 34 | char zxbuf[ZXSIZEX*ZXSIZEY*4]; |
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| 35 | |||
| 36 | |||
| 37 | // Entry point |
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| 38 | int main(int argc, char *argv[]) |
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| 39 | { |
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| 40 | // Initialize SDL's subsystems - in this case, only video. |
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| 41 | if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) |
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| 42 | { |
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| 43 | fprintf(stderr, "Unable to init SDL: %s\n", SDL_GetError()); |
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| 44 | exit(1); |
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| 45 | } |
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| 46 | |||
| 47 | // Register SDL_Quit to be called at exit; makes sure things are |
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| 48 | // cleaned up when we quit. |
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| 49 | atexit(SDL_Quit); |
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| 50 | |||
| 51 | // Attempt to create a window with 32bit pixels. |
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| 52 | plane = SDL_SetVideoMode(SIZEX, SIZEY, BITSIZE, SDL_SWSURFACE); |
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| 53 | |||
| 54 | // If we fail, return error. |
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| 55 | if ( plane == NULL ) |
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| 56 | { |
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| 57 | fprintf(stderr, "Unable to set 896x640 video: %s\n", SDL_GetError()); |
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| 58 | exit(1); |
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| 59 | } |
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| 60 | |||
| 61 | |||
| 62 | net_init(); |
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| 63 | |||
| 64 | |||
| 65 | // Main loop: loop forever. |
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| 66 | while (1) |
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| 67 | { |
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| 68 | net_recv(); |
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| 69 | |||
| 70 | render(); |
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| 71 | |||
| 72 | // Poll for events, and handle the ones we care about. |
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| 73 | SDL_Event event; |
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| 74 | while (SDL_PollEvent(&event)) |
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| 75 | { |
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| 76 | switch (event.type) |
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| 77 | { |
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| 78 | case SDL_KEYDOWN: |
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| 79 | break; |
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| 80 | case SDL_KEYUP: |
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| 81 | // If escape is pressed, return (and thus, quit) |
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| 82 | if (event.key.keysym.sym == SDLK_ESCAPE) |
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| 83 | return 0; |
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| 84 | break; |
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| 85 | case SDL_QUIT: |
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| 86 | return(0); |
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| 87 | } |
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| 88 | } |
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| 89 | } |
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| 90 | return 0; |
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| 91 | } |
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| 92 | |||
| 93 | |||
| 94 | |||
| 95 | |||
| 96 | |||
| 97 | |||
| 98 | int sock=(-1), listener=(-1); |
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| 99 | struct sockaddr_in addr; |
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| 100 | |||
| 101 | |||
| 102 | |||
| 103 | |||
| 104 | void net_init(void) |
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| 105 | { |
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| 106 | listener = socket(AF_INET, SOCK_STREAM, 0); |
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| 107 | if(listener < 0) |
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| 108 | { |
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| 109 | perror("socket init error"); |
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| 110 | exit(1); |
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| 111 | } |
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| 112 | |||
| 113 | int tr=1; |
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| 114 | |||
| 115 | setsockopt(listener,SOL_SOCKET,SO_REUSEADDR,&tr,sizeof(int)); |
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| 116 | |||
| 117 | addr.sin_family = AF_INET; |
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| 118 | addr.sin_port = htons(12345); |
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| 119 | addr.sin_addr.s_addr = htonl(INADDR_ANY); |
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| 120 | if(bind(listener, (struct sockaddr *)&addr, sizeof(addr)) < 0) |
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| 121 | { |
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| 122 | perror("bind error"); |
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| 123 | exit(2); |
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| 124 | } |
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| 125 | |||
| 126 | listen(listener, 1); |
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| 127 | |||
| 128 | sock = accept(listener, NULL, NULL); |
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| 129 | if(sock < 0) |
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| 130 | { |
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| 131 | perror("accept error"); |
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| 132 | exitt(3); |
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| 133 | } |
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| 134 | } |
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| 135 | |||
| 136 | |||
| 137 | |||
| 138 | |||
| 139 | |||
| 140 | void net_recv(void) |
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| 141 | { |
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| 142 | #define BUFSIZE 10240 |
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| 143 | char buf[BUFSIZE]; |
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| 144 | |||
| 145 | |||
| 146 | int bytes_read; |
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| 147 | |||
| 148 | |||
| 149 | |||
| 150 | bytes_read = recv(sock,buf,BUFSIZE, MSG_DONTWAIT); |
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| 151 | // bytes_read = recv(sock,buf,BUFSIZE, 0); |
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| 152 | |||
| 153 | if( bytes_read<0 ) |
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| 154 | { |
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| 155 | if( ! ((errno==EAGAIN) || (errno==EWOULDBLOCK)) ) |
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| 156 | { |
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| 157 | printf("recv failed - error %d!\n",errno); |
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| 158 | exitt(1); |
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| 159 | } |
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| 160 | } |
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| 161 | else if( bytes_read==0 ) |
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| 162 | { |
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| 163 | printf("recv failed - closed! errno=%d\n",errno); |
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| 164 | exitt(1); |
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| 165 | } |
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| 166 | else // >0 |
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| 167 | { |
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| 168 | parse_recv_data(buf,bytes_read); |
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| 169 | } |
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| 170 | |||
| 171 | // if( 4!=sscanf(buf,"%X<=%X:%X with %X",&addr,&dat_hi,&dat_lo,&sel) ) |
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| 172 | } |
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| 173 | |||
| 174 | |||
| 175 | |||
| 176 | |||
| 177 | |||
| 178 | void parse_recv_data(char * buf,int bytes_read) |
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| 179 | { |
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| 180 | #define PBUF_SIZE 63 |
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| 181 | char pbuf[PBUF_SIZE+1]; |
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| 182 | |||
| 183 | static int parsed = 0; |
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| 184 | |||
| 185 | |||
| 186 | int i; |
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| 187 | char c; |
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| 188 | char r,g,b; |
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| 189 | char * pix; |
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| 190 | |||
| 191 | int xcoord,ycoord,color; |
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| 192 | |||
| 193 | |||
| 194 | i=0; |
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| 195 | |||
| 196 | while( bytes_read>0 ) |
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| 197 | { |
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| 198 | c = *(buf++); |
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| 199 | |||
| 200 | if(c=='\n') |
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| 201 | { |
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| 202 | pbuf[parsed]=0; |
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| 203 | parsed=0; |
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| 204 | |||
| 205 | if( (*pbuf)=='p' ) |
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| 206 | { |
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| 207 | //printf("%s\n",pbuf+1); |
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| 208 | |||
| 209 | if( 3==sscanf(pbuf+1,"%X,%X,%X",&xcoord,&ycoord,&color) ) |
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| 210 | { |
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| 211 | if( (0<=xcoord)&&(xcoord<ZXSIZEX)&& |
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| 212 | (0<=ycoord)&&(ycoord<ZXSIZEY) ) |
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| 213 | { |
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| 214 | pix = zxbuf + ( xcoord*4 + (ycoord*ZXSIZEX*4) ); |
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| 215 | |||
| 216 | r = (color<<2); |
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| 217 | g = (color<<4); |
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| 218 | b = (color<<6); |
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| 219 | |||
| 220 | r &= 0xC0; |
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| 221 | g &= 0xC0; |
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| 222 | b &= 0xC0; |
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| 223 | |||
| 224 | r |= r>>2; |
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| 225 | g |= g>>2; |
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| 226 | b |= b>>2; |
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| 227 | |||
| 228 | r |= r>>4; |
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| 229 | g |= g>>4; |
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| 230 | b |= b>>4; |
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| 231 | |||
| 232 | *(pix+0) = b; |
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| 233 | *(pix+1) = g; |
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| 234 | *(pix+2) = r; |
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| 235 | } |
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| 236 | } |
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| 237 | } |
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| 238 | } |
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| 239 | else |
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| 240 | { |
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| 241 | if(parsed>=PBUF_SIZE) |
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| 242 | { |
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| 243 | printf("too long string in network data!\n"); |
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| 244 | exitt(1); |
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| 245 | } |
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| 246 | pbuf[parsed++]=c; |
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| 247 | } |
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| 248 | |||
| 249 | bytes_read--; |
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| 250 | } |
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| 251 | } |
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| 252 | |||
| 253 | |||
| 254 | |||
| 255 | |||
| 256 | |||
| 257 | void bufrender(void) |
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| 258 | { |
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| 259 | |||
| 260 | int bx,by; |
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| 261 | |||
| 262 | int * la1, * la2; |
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| 263 | |||
| 264 | unsigned char * za; |
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| 265 | |||
| 266 | int r,g,b; |
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| 267 | int value; |
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| 268 | |||
| 269 | |||
| 270 | for(by=0;by<ZXSIZEY;by++) |
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| 271 | { |
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| 272 | la1 = ((int *)plane->pixels) + by*((plane->pitch)>>2)*2; |
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| 273 | la2 = la1 + ((plane->pitch)>>2); |
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| 274 | |||
| 275 | za = (unsigned char *)zxbuf + (by*ZXSIZEX*4); |
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| 276 | |||
| 277 | for(bx=0;bx<(ZXSIZEX/2);bx++) |
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| 278 | { |
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| 279 | r = *(za+2); |
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| 280 | g = *(za+1); |
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| 281 | b = *(za+0); |
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| 282 | |||
| 283 | r += *(za+6); |
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| 284 | g += *(za+5); |
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| 285 | b += *(za+4); |
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| 286 | |||
| 287 | r <<= 15; |
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| 288 | g <<= 7; |
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| 289 | b >>= 1; |
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| 290 | |||
| 291 | r &= 0x00FF0000; |
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| 292 | g &= 0x0000FF00; |
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| 293 | b &= 0x000000FF; |
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| 294 | |||
| 295 | za += 8; |
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| 296 | |||
| 297 | value = r|g|b; |
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| 298 | |||
| 299 | *(la1++) = value; |
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| 300 | *(la2++) = value; |
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| 301 | } |
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| 302 | } |
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| 303 | } |
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| 304 | |||
| 305 | |||
| 306 | |||
| 307 | |||
| 308 | |||
| 309 | |||
| 310 | |||
| 311 | |||
| 312 | |||
| 313 | |||
| 314 | void render() |
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| 315 | { |
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| 316 | // Lock surface if needed |
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| 317 | if( SDL_MUSTLOCK(plane) ) |
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| 318 | if (SDL_LockSurface(plane) < 0) |
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| 319 | return; |
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| 320 | |||
| 321 | // Ask SDL for the time in milliseconds |
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| 322 | int tick = SDL_GetTicks(); |
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| 323 | |||
| 324 | // Unlock if needed |
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| 325 | if( SDL_MUSTLOCK(plane) ) |
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| 326 | SDL_UnlockSurface(plane); |
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| 327 | |||
| 328 | //render picture |
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| 329 | bufrender(); |
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| 330 | |||
| 331 | // Tell SDL to update the whole plane |
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| 332 | SDL_UpdateRect(plane, 0, 0, SIZEX, SIZEY); |
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| 333 | } |
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| 334 | |||
| 335 | |||
| 336 | |||
| 337 | |||
| 338 | |||
| 339 | |||
| 340 | |||
| 341 | |||
| 342 | void exitt(int a) |
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| 343 | { |
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| 344 | |||
| 345 | if( sock>=0 ) close(sock); |
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| 346 | |||
| 347 | if( listener>=0 ) close(listener); |
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| 348 | |||
| 349 | exit(a); |
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| 350 | |||
| 351 | |||
| 352 | |||
| 353 | |||
| 354 | |||
| 355 | } |
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| 356 |