FreeCalypso > hg > freecalypso-tools
annotate ringtools/fc-e1gen.c @ 820:03457a66d860
buzplayer: add basic support for PWT
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 30 May 2021 03:39:58 +0000 |
parents | 2133c475f5bd |
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rev | line source |
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cefdc6623322
fc-e1gen utility written, compiles
Mychaela Falconia <falcon@freecalypso.org>
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1 /* |
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2 * This program is an experimental compiler for TI's Melody E1 format |
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3 * based on the description given in the L1M_AS001_1.pdf document |
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4 * found in the Peek/FGW drop. |
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5 */ |
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6 |
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7 #include <sys/types.h> |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include <ctype.h> |
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11 #include <string.h> |
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12 #include <strings.h> |
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13 |
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14 #define MAX_FIELDS 17 |
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15 |
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16 char *infname, *outfname; |
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17 FILE *inf, *outf; |
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18 char linebuf[512], *fields[MAX_FIELDS+1]; |
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19 int lineno, nfields; |
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20 |
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21 int global_osc_set; |
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22 int start_time, osc_mask; |
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23 u_short osc_words[8][4]; |
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24 |
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25 get_input_line() |
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26 { |
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27 char *cp; |
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28 int n; |
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29 |
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30 if (!fgets(linebuf, sizeof linebuf, inf)) { |
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31 fprintf(stderr, "%s: unexpected EOF\n", infname); |
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32 exit(1); |
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33 } |
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34 cp = index(linebuf, '\n'); |
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35 if (!cp) { |
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36 fprintf(stderr, "%s line %d: too long or missing newline\n", |
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37 infname, lineno); |
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38 exit(1); |
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39 } |
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40 *cp = '\0'; |
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41 /* parse it into fields */ |
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42 cp = linebuf; |
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43 n = 0; |
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44 for (;;) { |
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45 while (isspace(*cp)) |
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46 cp++; |
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47 if (*cp == '\0' || *cp == '#') |
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48 break; |
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49 if (n >= MAX_FIELDS) { |
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50 fprintf(stderr, "%s line %d: too many fields\n", |
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51 infname, lineno); |
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52 exit(1); |
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53 } |
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54 fields[n++] = cp; |
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55 while (*cp && !isspace(*cp)) |
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56 cp++; |
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57 if (*cp) |
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58 *cp++ = '\0'; |
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59 } |
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60 fields[n] = 0; |
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61 nfields = n; |
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62 } |
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63 |
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64 input_number(str, min, max) |
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65 char *str; |
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66 { |
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67 char *endp; |
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68 long val; |
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69 |
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70 val = strtol(str, &endp, 10); |
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71 if (*endp) { |
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72 fprintf(stderr, |
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73 "%s line %d: \"%s\" is not a valid decimal number\n", |
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74 infname, lineno, str); |
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75 exit(1); |
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76 } |
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77 if (val < min || val > max) { |
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78 fprintf(stderr, "%s line %d: number %ld is out of range\n", |
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79 infname, lineno, val); |
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80 exit(1); |
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81 } |
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82 return val; |
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83 } |
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84 |
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85 input_paren_number(str, min, max) |
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86 char *str; |
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87 { |
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88 char *cp; |
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89 |
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90 if (str[0] != '(') { |
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91 badparen: fprintf(stderr, |
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92 "%s line %d: bad parenthesized argument \"%s\"\n", |
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93 infname, lineno, str); |
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94 exit(1); |
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95 } |
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96 cp = index(str, ')'); |
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97 if (!cp || cp[1]) |
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98 goto badparen; |
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99 *cp = '\0'; |
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100 return input_number(str + 1, min, max); |
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101 } |
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102 |
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103 handle_time_line() |
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104 { |
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105 if (nfields != 2) { |
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106 fprintf(stderr, "%s line %d: time header takes 1 argument\n", |
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107 infname, lineno); |
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108 exit(1); |
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109 } |
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110 start_time = input_number(fields[1], 1, 255); |
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111 } |
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112 |
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113 check_req_field(n) |
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114 { |
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115 if (n >= nfields) { |
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116 fprintf(stderr, "%s line %d: too few fields\n", |
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117 infname, lineno); |
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118 exit(1); |
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119 } |
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120 } |
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121 |
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122 process_osc_line() |
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123 { |
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124 int p = 1; |
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125 int oscn, osc_bit; |
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126 u_short word0, word1, word2, word3; |
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127 int amp, freq, length; |
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128 int tremT0, tremFreq; |
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129 int sustain, t1, t2, t3, t5; |
175
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172
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130 int bit0; |
33
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131 |
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132 check_req_field(p); |
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133 oscn = input_number(fields[p], 0, 7); |
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134 p++; |
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135 osc_bit = 1 << oscn; |
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136 if (osc_mask & osc_bit) { |
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137 fprintf(stderr, "%s line %d: osc %d defined more than once\n", |
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138 infname, lineno, oscn); |
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139 exit(1); |
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140 } |
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141 osc_mask |= osc_bit; |
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142 |
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143 /* basic part */ |
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144 check_req_field(p); |
175
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172
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145 if (fields[p][0] == '(') { |
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172
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146 bit0 = input_paren_number(fields[p], 0, 1); |
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147 p++; |
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148 check_req_field(p); |
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149 } else |
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150 bit0 = 0; |
33
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151 if (!strcmp(fields[p], "df")) { |
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152 p++; |
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153 check_req_field(p); |
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154 freq = input_number(fields[p], -8192, 8191) & 0x3FFF; |
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155 p++; |
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156 check_req_field(p); |
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157 amp = input_number(fields[p], 0, 1023); |
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158 p++; |
175
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159 word0 = freq << 2 | 2 | bit0; |
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160 word1 = amp << 6; |
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161 } else { |
175
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172
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162 word0 = bit0; |
33
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163 if (!strcmp(fields[p], "sq1")) { |
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164 p++; |
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165 word0 |= 4; |
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166 check_req_field(p); |
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167 } |
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168 if (!strcmp(fields[p], "sq2")) { |
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169 p++; |
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170 word0 |= 8; |
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171 check_req_field(p); |
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172 } |
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173 amp = input_number(fields[p], 0, 63); |
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174 p++; |
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175 check_req_field(p); |
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176 freq = input_number(fields[p], 0, 63); |
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177 p++; |
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178 word0 |= (freq << 10) | (amp << 4); |
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179 check_req_field(p); |
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180 length = input_number(fields[p], 0, 1023); |
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181 p++; |
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182 word1 = length << 6; |
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183 } |
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184 |
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185 /* optional 3rd word */ |
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186 if (p < nfields && !strcmp(fields[p], "trem")) { |
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187 p++; |
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188 word1 |= 0x10; |
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189 check_req_field(p); |
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190 tremT0 = input_number(fields[p], 0, 7); |
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191 p++; |
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192 check_req_field(p); |
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193 tremFreq = input_number(fields[p], -16, 15) & 31; |
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194 p++; |
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195 word2 = (tremFreq << 11) | (tremT0 << 8); |
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196 } |
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197 |
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198 /* optional 4th word */ |
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199 if (p < nfields && !strcmp(fields[p], "env")) { |
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200 p++; |
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201 word1 |= 0x20; |
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202 check_req_field(p); |
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203 sustain = input_number(fields[p], 0, 15); |
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204 p++; |
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205 check_req_field(p); |
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206 t1 = input_number(fields[p], 0, 7); |
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207 p++; |
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208 check_req_field(p); |
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209 t2 = input_number(fields[p], 0, 7); |
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210 p++; |
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211 check_req_field(p); |
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212 t3 = input_number(fields[p], 0, 7); |
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213 p++; |
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214 check_req_field(p); |
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215 t5 = input_number(fields[p], 0, 7); |
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216 p++; |
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217 word3 = (t1 << 13) | (t2 << 10) | (t3 << 7) | (t5 << 4) | |
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218 sustain; |
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219 } |
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220 |
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221 if (p != nfields) { |
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222 fprintf(stderr, "%s line %d: unexpected extra fields\n", |
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223 infname, lineno); |
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224 } |
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225 osc_words[oscn][0] = word0; |
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226 osc_words[oscn][1] = word1; |
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227 osc_words[oscn][2] = word2; |
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228 osc_words[oscn][3] = word3; |
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229 } |
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230 |
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231 read_osc_lines() |
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Mychaela Falconia <falcon@freecalypso.org>
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|
232 { |
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233 osc_mask = 0; |
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Mychaela Falconia <falcon@freecalypso.org>
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234 for (;;) { |
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Mychaela Falconia <falcon@freecalypso.org>
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235 get_input_line(); |
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Mychaela Falconia <falcon@freecalypso.org>
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|
236 if (!nfields) |
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Mychaela Falconia <falcon@freecalypso.org>
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237 break; |
cefdc6623322
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Mychaela Falconia <falcon@freecalypso.org>
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238 if (!strcmp(fields[0], "osc")) { |
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Mychaela Falconia <falcon@freecalypso.org>
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239 process_osc_line(); |
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Mychaela Falconia <falcon@freecalypso.org>
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240 continue; |
cefdc6623322
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Mychaela Falconia <falcon@freecalypso.org>
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|
241 } |
cefdc6623322
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Mychaela Falconia <falcon@freecalypso.org>
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242 fprintf(stderr, "%s line %d: osc line expected\n", |
cefdc6623322
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Mychaela Falconia <falcon@freecalypso.org>
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|
243 infname, lineno); |
cefdc6623322
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Mychaela Falconia <falcon@freecalypso.org>
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244 exit(1); |
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Mychaela Falconia <falcon@freecalypso.org>
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245 } |
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246 } |
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247 |
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248 emit_16bit_word(word) |
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249 u_short word; |
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250 { |
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251 putc(word & 0xFF, outf); |
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252 putc(word >> 8, outf); |
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253 } |
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254 |
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255 emit_record() |
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256 { |
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257 int oscn, osc_bit; |
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258 |
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259 putc(start_time, outf); |
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260 putc(osc_mask, outf); |
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261 for (oscn = 0; oscn < 8; oscn++) { |
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262 osc_bit = 1 << oscn; |
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263 if (!(osc_mask & osc_bit)) |
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264 continue; |
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265 emit_16bit_word(osc_words[oscn][0]); |
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266 emit_16bit_word(osc_words[oscn][1]); |
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267 if (osc_words[oscn][1] & 0x10) |
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268 emit_16bit_word(osc_words[oscn][2]); |
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269 if (osc_words[oscn][1] & 0x20) |
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270 emit_16bit_word(osc_words[oscn][3]); |
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271 } |
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272 } |
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273 |
172
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274 handle_global_osc_set() |
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275 { |
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276 int p; |
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277 int oscn, osc_bit; |
175
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278 int dummy_time_byte; |
172
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279 |
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280 do |
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281 get_input_line(); |
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282 while (!nfields); |
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283 if (strcmp(fields[0], "osc-set")) { |
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284 fprintf(stderr, "%s line %d: osc-set line expected\n", |
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285 infname, lineno); |
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286 exit(1); |
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287 } |
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288 if (nfields < 2) { |
175
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289 emptyerr: fprintf(stderr, "%s line %d: osc-set must be non-empty\n", |
172
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290 infname, lineno); |
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291 exit(1); |
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292 } |
175
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293 p = 1; |
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294 if (fields[p][0] == '(') { |
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295 dummy_time_byte = input_paren_number(fields[p], 0, 255); |
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296 p++; |
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297 if (nfields < 3) |
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298 goto emptyerr; |
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299 } else |
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300 dummy_time_byte = 0; |
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301 for (; p < nfields; p++) { |
172
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302 oscn = input_number(fields[p], 0, 7); |
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303 osc_bit = 1 << oscn; |
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304 global_osc_set |= osc_bit; |
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305 } |
175
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306 putc(dummy_time_byte, outf); |
172
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307 putc(global_osc_set, outf); |
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308 } |
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309 |
33
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310 main(argc, argv) |
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311 char **argv; |
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312 { |
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313 if (argc != 3) { |
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314 fprintf(stderr, "usage: %s src-file e1-bin-file\n", argv[0]); |
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315 exit(1); |
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316 } |
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317 if (strcmp(argv[1], "-")) { |
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318 infname = argv[1]; |
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319 inf = fopen(infname, "r"); |
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320 if (!inf) { |
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321 perror(infname); |
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322 exit(1); |
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323 } |
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324 } else { |
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325 infname = "stdin"; |
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326 inf = stdin; |
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327 } |
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328 outfname = argv[2]; |
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329 outf = fopen(outfname, "w"); |
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330 if (!outf) { |
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331 perror(outfname); |
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332 exit(1); |
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333 } |
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334 |
172
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335 handle_global_osc_set(); |
33
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336 /* main loop */ |
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337 for (;;) { |
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338 do |
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339 get_input_line(); |
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340 while (!nfields); |
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341 if (!strcmp(fields[0], "time")) { |
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342 handle_time_line(); |
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343 read_osc_lines(); |
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344 emit_record(); |
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345 } else if (!strcmp(fields[0], "end")) { |
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346 emit_16bit_word(0); |
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347 exit(0); |
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348 } else { |
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349 fprintf(stderr, "%s line %d: expected time or end\n", |
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350 infname, lineno); |
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351 exit(1); |
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352 } |
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353 } |
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354 } |