We are going to use buffer anyway for the sensitive work so that we could start to use simple format and start the PPM format.
| .\vDisplayController_002.cpp Sat Mar 26 16:01:16 2022 |
| ... |
| 40 :// |
| 41 :int vDisplayController_002::write_ppm_002 (char* filename, float*** img, int width, int height, int flag) { |
| 42 : int i, j; |
| 43 : FILE *fp; |
| 44 : FILE *start_fp; |
| 45 : char w[1]; |
| 46 : char head[128]; |
| 47 : int count = 0, index = 0; |
| 48 : |
| 49 : printf("int write_ppm_002 starts.\n"); |
| 50 : |
| 51 : |
| 52 : for ( i = 0; i<128; i++ ) |
| 53 : head[i] = 0; |
| 54 : |
| 55 : fp = fopen ( (char*) filename, "wb" ); |
| 56 : start_fp = fp; |
| 57 : |
| 58 : sprintf( head, "P6\r%d %d\r%d\r", width, height, 255 ); |
| 59 : |
| 60 : // count the buffer. |
| 61 : for ( i = 0; i<128; i++ ) { |
| 62 : if ( head[i] == '\r' ) |
| 63 : count++; |
| 64 : |
| 65 : if ( count == 3 ) { |
| 66 : index = i; |
| 67 : break; |
| 68 : } |
| 69 : } |
| 70 : |
| 71 : printf("index %d flag %d filename %s\n", index, flag, filename ); |
| 72 : printf("start|fp| to |fp| = |%p| to |%p|\n", start_fp, fp); |
| 73 : |
| 74 : fwrite( (char*)head, 128, index, fp ); |
| 75 : |
| 76 : printf("start|fp| to |fp| = |%p| to |%p|\n", start_fp, fp); |
| 77 : |
| 78 : if ( flag == 1 ) { |
| 79 : for ( j = 0; j< height; j++ ) { |
| 80 : for ( i = 0; i< width; i++ ) { |
| 81 : printf(" i, j = %d, %d\n", i, j ); |
| 82 : w[0] = 255.0f * img[j][i][0]; |
| 83 : fwrite( (char*) w, 1, 1, fp ); |
| 84 : w[0] = 255.0f * img[j][i][1]; |
| 85 : fwrite( (char*) w, 1, 1, fp ); |
| 86 : w[0] = 255.0f * img[j][i][2]; |
| 87 : fwrite( (char*) w, 1, 1, fp ); |
| 88 : } |
| 89 : } |
| 90 : } else if ( flag == 0 ) { |
| 91 : printf("We are going to Print the message in the header.\n"); |
| 92 : fprintf(fp, "#Print Only Header flag %d.\n", flag); |
| 93 : } |
| 94 : |
| 95 : printf("start|fp| to |fp| = |%p| to |%p|\n", start_fp, fp); |
| 96 : fclose (fp); |
| 97 : |
| 98 : printf("int write_ppm_002 ends. fp=|%p|\n", fp); |
| 99 : |
| 00 : return 0; |
| 01 :} |
| 02 : |
*
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