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annotate 3rdparty/packages/sierra/convutils/picpatch.c @ 2202:981b4e7e8014

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Fixed makefile to copy dsks
author boisy
date Sat, 14 Mar 2009 20:11:55 +0000
parents b2820d3f1e38
children
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b2820d3f1e38 Utils written by G. Major for VOL conversion to CoCo interpreter
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1 /***********************************************************************************
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2 * Program Name : picpatch *
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3 * Description : Removes the Plot command (0xFA) from all the pictures to make *
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4 * them compatible with the coco AGI interpreter. *
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5 * Author : Guillaume Major *
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6 * Date : July 19, 2006 *
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7 * License : Freeware. Do whatever you want with it! *
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8 ***********************************************************************************/
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9
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10 #include <stdio.h>
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11 #include <ctype.h>
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12 #include <string.h>
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13 #include <stdlib.h>
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14 #include <io.h>
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15 #include <direct.h>
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16 #include <windows.h>
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17
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18 /* VOL directory entry structure */
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19 struct DIRECTORY_ENTRY {
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20 unsigned char byte1;
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21 unsigned char byte2;
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22 unsigned char byte3;
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23 };
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24
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25 /* Global variables */
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26 char sGamePath[MAX_PATH];
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27
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28 /* Function prototypes */
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29 void PatchPicture(unsigned int iVolFile, unsigned int iPicNum, unsigned int iPicPos);
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30 void ShowUsage();
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31
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32 /* Main */
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33 int main(int argc, char **argv) {
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34
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35 FILE *picDir;
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36 char sPicDir[MAX_PATH];
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37 unsigned int iPicNum, iVolFile, iPicPos;
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38 struct DIRECTORY_ENTRY dir;
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39
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40 printf("\n");
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41 printf("picpatch AGI picture resources patcher\n");
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42 printf("Version 1.0 (July 2006)\n\n");
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43
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44 if (argc < 2) {
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45 ShowUsage();
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46 }
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47 else {
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48 strncpy(sGamePath, argv[1], MAX_PATH);
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49 }
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50
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51 /* Get the full path of picDir */
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52 sprintf(sPicDir, "%s\\picDir", sGamePath);
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53
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54 /* Open picDir file */
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55 if ((picDir = fopen(sPicDir, "rb")) == NULL) {
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56 perror("Error opening picDir file");
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57 exit(1);
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58 }
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59
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60 /* Initialize the picture counter */
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61 iPicNum = 0;
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62
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63 /* Loop through the picDir file to remove plot commands */
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64 while (!ferror(picDir) && !feof(picDir) && fread(&dir, sizeof(dir), 1, picDir)) {
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65 /* Verify if the picture resource exists */
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66 if (dir.byte1 != 0xFF) {
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67 iVolFile = (dir.byte1 >> 4);
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68 iPicPos = ((dir.byte1 & 0x0F) << 16) + (dir.byte2 << 8) + dir.byte3;
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69 PatchPicture(iVolFile, iPicNum, iPicPos);
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70 }
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71 iPicNum++;
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72 }
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73
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74 printf("Done!\n\n");
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75
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76 /* Exit normally */
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77 exit(0);
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78 }
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79
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80 /* Patch the picture number specified in the VOL file */
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81 void PatchPicture(unsigned int iVolFile, unsigned int iPicNum, unsigned int iPicPos) {
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82
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83 FILE *volFile;
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84 char sVolFile[MAX_PATH];
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85 unsigned short iPicSize = 0;
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86 unsigned char acBuffer[16184];
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87 unsigned char cChar;
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88 BOOL bSkip = FALSE;
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89
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90 printf("Patching picture.%03i\n", iPicNum);
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91
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92 /* Get the VOL file name */
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93 sprintf(sVolFile, "%s\\vol.%i", sGamePath, iVolFile);
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94
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95 /* Open the VOL file for writing */
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96 if ((volFile = fopen(sVolFile, "r+b")) == NULL) {
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97 perror("Error opening VOL file");
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98 exit(1);
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99 }
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100
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101 /* Skip the resource header */
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102 fseek(volFile, iPicPos + 5, SEEK_SET);
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103
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104 while (!ferror(volFile) && !feof(volFile) && fread(&cChar, sizeof(unsigned char), 1, volFile) && cChar != 0xFF) {
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105 if ((cChar & 0xF0) == 0xF0) {
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106 bSkip = FALSE;
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107 }
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108 if (bSkip == FALSE) {
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109 if (cChar != 0xFA) {
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110 acBuffer[iPicSize] = cChar;
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111 iPicSize++;
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112 }
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113 else {
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114 bSkip = TRUE;
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115 }
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116 }
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117 }
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118
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119 /* Add 0xFF to the buffer */
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120 acBuffer[iPicSize] = 0xFF;
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121 iPicSize++;
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122
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123 /* Modify the size of the picture in the header */
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124 fseek(volFile, 0, SEEK_SET);
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125 fwrite(&iPicSize, sizeof(unsigned short), 1, volFile);
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126
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127 /* Write the buffer in the VOL file */
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128 fwrite(acBuffer, sizeof(char), iPicSize, volFile);
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129
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130 /* Close the VOL file */
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131 fclose(volFile);
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132
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133 }
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134
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135 /* Shows usage */
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136 void ShowUsage() {
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137
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138 printf("Usage: picpatch game-path\n");
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139
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140 /* Exit normally */
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141 exit(0);
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142
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143 }