Mercurial > hg > sidinfo
annotate sidlib.c @ 88:c5ff71d64e53
More work on sidlib SLDB code.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Fri, 12 Feb 2016 01:13:48 +0200 |
parents | e1ff9cd27a84 |
children | 681dfc3b006e |
rev | line source |
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70
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1 /* |
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2 * SIDInfoLib - Way too simplistic PSID/RSID file library |
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3 * Written by Matti 'ccr' H�m�l�inen <ccr@tnsp.org> |
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2b2376f1b0cc
Update copyright years. Yay. It's 2016!
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4 * (C) Copyright 2014-2016 Tecnic Software productions (TNSP) |
70
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5 */ |
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6 #include "sidlib.h" |
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7 #include "th_endian.h" |
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8 #include "th_string.h" |
70
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9 |
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10 |
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11 static void si_append_hash16(th_md5state_t *state, uint16_t data) |
70
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12 { |
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13 uint8_t ib8[2]; |
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14 ib8[0] = data & 0xff; |
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15 ib8[1] = data >> 8; |
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16 th_md5_append(state, (uint8_t *) &ib8, sizeof(ib8)); |
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17 } |
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18 |
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19 |
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20 int si_read_sid_file(th_ioctx *ctx, PSIDHeader *psid) |
70
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21 { |
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22 th_md5state_t state; |
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23 uint8_t tmp8, *data = NULL; |
70
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24 int index, ret = -1; |
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25 size_t read; |
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26 BOOL first; |
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27 |
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28 memset(psid, 0, sizeof(*psid)); |
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29 |
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30 if ((data = (uint8_t *) th_malloc(PSID_BUFFER_SIZE)) == NULL) |
70
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31 { |
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32 th_io_error(ctx, THERR_MALLOC, |
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33 "Error allocating temporary data buffer of %d bytes.\n", |
77 | 34 PSID_BUFFER_SIZE); |
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35 goto error; |
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36 } |
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37 |
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38 // Read PSID header in |
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39 if (!thfread_str(ctx, (uint8_t *) psid->magic, PSID_MAGIC_LEN) || |
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40 !thfread_be16(ctx, &psid->version) || |
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41 !thfread_be16(ctx, &psid->dataOffset) || |
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42 !thfread_be16(ctx, &psid->loadAddress) || |
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43 !thfread_be16(ctx, &psid->initAddress) || |
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44 !thfread_be16(ctx, &psid->playAddress) || |
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45 !thfread_be16(ctx, &psid->nSongs) || |
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46 !thfread_be16(ctx, &psid->startSong) || |
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47 !thfread_be32(ctx, &psid->speed)) |
70
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48 { |
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49 th_io_error(ctx, ctx->errno, |
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50 "Could not read PSID/RSID header: %s.\n", |
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51 th_error_str(ctx->errno)); |
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52 goto error; |
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53 } |
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54 |
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55 psid->magic[PSID_MAGIC_LEN] = 0; |
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56 |
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57 if ((psid->magic[0] != 'R' && psid->magic[0] != 'P') || |
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58 psid->magic[1] != 'S' || psid->magic[2] != 'I' || psid->magic[3] != 'D' || |
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59 psid->version < 1 || psid->version > 3) |
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60 { |
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61 th_io_error(ctx, THERR_NOT_SUPPORTED, |
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62 "Not a supported PSID or RSID file.\n"); |
70
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63 goto error; |
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64 } |
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65 |
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66 psid->isRSID = psid->magic[0] == 'R'; |
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67 |
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68 if (!thfread_str(ctx, (uint8_t *) psid->sidName, PSID_STR_LEN) || |
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69 !thfread_str(ctx, (uint8_t *) psid->sidAuthor, PSID_STR_LEN) || |
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70 !thfread_str(ctx, (uint8_t *) psid->sidCopyright, PSID_STR_LEN)) |
70
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71 { |
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72 th_io_error(ctx, ctx->errno, |
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73 "Error reading SID file header: %s.\n", |
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74 th_error_str(ctx->errno)); |
70
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75 goto error; |
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76 } |
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77 |
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78 psid->sidName[PSID_STR_LEN] = 0; |
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79 psid->sidAuthor[PSID_STR_LEN] = 0; |
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80 psid->sidCopyright[PSID_STR_LEN] = 0; |
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81 |
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82 // Check if we need to load PSIDv2NG header ... |
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83 if (psid->version >= 2) |
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84 { |
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85 // Yes, we need to |
85
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86 if (!thfread_be16(ctx, &psid->flags) || |
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87 !thfread_byte(ctx, &psid->startPage) || |
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88 !thfread_byte(ctx, &psid->pageLength) || |
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89 !thfread_be16(ctx, &psid->reserved)) |
70
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90 { |
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91 th_io_error(ctx, ctx->errno, |
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92 "Error reading PSID/RSID v2+ extra header data: %s.\n", |
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93 th_error_str(ctx->errno)); |
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94 goto error; |
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95 } |
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96 } |
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97 |
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98 // Initialize MD5-hash calculation |
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99 th_md5_init(&state); |
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100 |
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101 // Process actual data |
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102 psid->dataSize = 0; |
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103 first = TRUE; |
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104 do |
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105 { |
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106 read = thfread(data, sizeof(uint8_t), PSID_BUFFER_SIZE, ctx); |
70
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107 psid->dataSize += read; |
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108 |
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109 if (first && psid->loadAddress == 0) |
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110 { |
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111 if (read < 4) |
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112 { |
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113 th_io_error(ctx, THERR_FREAD, |
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114 "Error reading song data, unexpectedly small file.\n"); |
70
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115 goto error; |
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116 } |
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117 |
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118 // Grab the actual load address |
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119 psid->loadAddress = TH_LE16_TO_NATIVE(*(uint16_t *) data); |
70
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120 |
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121 // Strip load address (2 first bytes) |
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122 th_md5_append(&state, &data[2], read - 2); |
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123 first = FALSE; |
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124 } |
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125 else |
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126 if (read > 0) |
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127 { |
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128 // Append "as is" |
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129 th_md5_append(&state, data, read); |
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130 } |
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131 } while (read > 0 && !thfeof(ctx)); |
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132 |
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133 // Append header data to hash |
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134 si_append_hash16(&state, psid->initAddress); |
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135 si_append_hash16(&state, psid->playAddress); |
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136 si_append_hash16(&state, psid->nSongs); |
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137 |
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138 // Append song speed data to hash |
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139 tmp8 = psid->isRSID ? 60 : 0; |
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140 for (index = 0; index < psid->nSongs && index < 32; index++) |
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141 { |
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142 if (psid->isRSID) |
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143 tmp8 = 60; |
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144 else |
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145 tmp8 = (psid->speed & (1 << index)) ? 60 : 0; |
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146 |
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147 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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148 } |
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149 |
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150 // Rest of songs (more than 32) |
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151 for (index = 32; index < psid->nSongs; index++) |
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152 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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153 |
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154 // PSIDv2NG specific |
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155 if (psid->version >= 2) |
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156 { |
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157 // REFER TO SIDPLAY HEADERS FOR MORE INFORMATION |
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158 tmp8 = (psid->flags >> 2) & 3; |
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159 if (tmp8 == 2) |
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160 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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161 } |
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162 |
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163 // Calculate the hash |
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164 th_md5_finish(&state, psid->hash); |
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165 ret = 0; |
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166 |
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167 error: |
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168 // Free buffer |
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169 th_free(data); |
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170 return ret; |
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171 } |
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172 |
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173 |
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174 const char *si_get_sid_clock_str(const int flags) |
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175 { |
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176 switch (flags & PSF_CLOCK_MASK) |
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177 { |
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178 case PSF_CLOCK_UNKNOWN : return "Unknown"; |
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179 case PSF_CLOCK_PAL : return "PAL 50Hz"; |
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180 case PSF_CLOCK_NTSC : return "NTSC 60Hz"; |
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181 case PSF_CLOCK_ANY : return "PAL / NTSC"; |
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182 default : return "?"; |
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183 } |
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184 } |
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185 |
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186 |
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187 const char *si_get_sid_model_str(const int flags) |
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188 { |
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189 switch (flags & PSF_MODEL_MASK) |
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190 { |
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191 case PSF_MODEL_UNKNOWN : return "Unknown"; |
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192 case PSF_MODEL_MOS6581 : return "MOS6581"; |
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193 case PSF_MODEL_MOS8580 : return "MOS8580"; |
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194 case PSF_MODEL_ANY : return "MOS6581 / MOS8580"; |
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195 default : return "?"; |
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196 } |
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197 } |
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198 |
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199 |
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200 // Free memory allocated for given SLDB node |
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201 // |
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202 static void si_sldb_node_free(SIDLibSLDBNode *node) |
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203 { |
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204 if (node) |
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205 { |
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206 th_free_r(&node->lengths); |
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207 th_free_r(&node); |
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208 } |
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209 } |
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210 |
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211 |
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212 // Insert given node to db linked list |
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213 // |
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214 static void si_sldb_node_insert(SIDLibSLDB *dbh, SIDLibSLDBNode *node) |
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215 { |
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216 if (dbh->nodes) |
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217 { |
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218 node->prev = dbh->nodes->prev; |
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219 dbh->nodes->prev->next = node; |
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220 dbh->nodes->prev = node; |
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221 } |
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222 else |
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223 { |
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224 dbh->nodes = node; |
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225 node->prev = node; |
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226 } |
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227 node->next = NULL; |
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228 } |
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229 |
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230 |
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231 // Parse a time-entry in SLDB format |
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232 // |
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233 static int si_sldb_get_value(const char *str, size_t *pos) |
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234 { |
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235 int result = 0; |
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236 |
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237 while (isdigit(str[*pos])) |
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238 result = (result * 10) + (str[(*pos)++] - '0'); |
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239 |
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240 return result; |
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241 } |
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242 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
243 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
244 static int si_sldb_gettime(const char *str, size_t *pos) |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
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|
245 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
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|
246 int result; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
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|
247 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
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|
248 // Check if it starts with a digit |
88
c5ff71d64e53
More work on sidlib SLDB code.
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parents:
86
diff
changeset
|
249 if (th_isdigit(str[*pos])) |
86
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
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|
250 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
251 // Get minutes-field |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
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|
252 result = si_sldb_get_value(str, pos) * 60; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
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253 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
254 // Check the field separator char |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
255 if (str[*pos] == ':') |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
256 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
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|
257 // Get seconds-field |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
258 (*pos)++; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
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|
259 result += si_sldb_get_value(str, pos); |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
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|
260 } |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
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|
261 else |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
262 result = -2; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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diff
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|
263 } |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
264 else |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
265 result = -1; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
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|
266 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
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|
267 // Ignore and skip the possible attributes |
88
c5ff71d64e53
More work on sidlib SLDB code.
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86
diff
changeset
|
268 while (str[*pos] && !th_isspace(str[*pos])) |
86
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
269 (*pos)++; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
270 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
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|
271 return result; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
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|
272 } |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
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|
273 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
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|
274 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
275 // Parse one SLDB definition line, return SLDB node |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
276 // |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
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changeset
|
277 SIDLibSLDBNode *si_sldb_parse_entry(th_ioctx *ctx, const char *line) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
278 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
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changeset
|
279 SIDLibSLDBNode *node = NULL; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
280 size_t pos, tmpLen, savePos; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
281 BOOL isOK; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
282 int i; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
283 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
284 // Allocate new node |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
285 node = (SIDLibSLDBNode *) th_malloc0(sizeof(SIDLibSLDBNode)); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
286 if (node == NULL) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
287 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
288 th_io_error(ctx, THERR_MALLOC, |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
289 "Error allocating new node.\n"); |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
290 return NULL; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
291 } |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
292 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
293 // Get hash value |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
294 pos = 0; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
295 for (i = 0; i < TH_MD5HASH_LENGTH; i++, pos += 2) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
296 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
297 unsigned int tmpu; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
298 sscanf(&line[pos], "%2x", &tmpu); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
299 node->hash[i] = tmpu; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
300 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
301 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
302 // Get playtimes |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
303 th_findnext(line, &pos); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
304 if (line[pos] != '=') |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
305 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
306 th_io_error(ctx, THERR_INVALID_DATA, |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
307 "'=' expected on column #%d.\n", pos); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
308 goto error; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
309 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
310 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
311 // First playtime is after '=' |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
312 savePos = ++pos; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
313 tmpLen = strlen(line); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
314 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
315 // Get number of sub-tune lengths |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
316 isOK = TRUE; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
317 while (pos < tmpLen && isOK) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
318 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
319 th_findnext(line, &pos); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
320 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
321 if (si_sldb_gettime(line, &pos) >= 0) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
322 node->nlengths++; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
323 else |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
324 isOK = FALSE; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
325 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
326 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
327 // Allocate memory for lengths |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
328 if (node->nlengths == 0) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
329 goto error; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
330 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
331 node->lengths = (int *) th_malloc0(node->nlengths * sizeof(int)); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
332 if (node->lengths == NULL) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
333 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
334 th_io_error(ctx, THERR_MALLOC, |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
335 "Could not allocate memory for node.\n"); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
336 goto error; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
337 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
338 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
339 // Read lengths in |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
340 for (i = 0, pos = savePos, isOK = TRUE; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
341 pos < tmpLen && i < node->nlengths && isOK; i++) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
342 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
343 int l; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
344 th_findnext(line, &pos); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
345 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
346 l = si_sldb_gettime(line, &pos); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
347 if (l >= 0) |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
348 node->lengths[i] = l; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
349 else |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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350 isOK = FALSE; |
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351 } |
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352 |
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353 return node; |
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354 |
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355 error: |
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356 si_sldb_node_free(node); |
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357 return NULL; |
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358 } |
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359 |
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360 |
88
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361 SIDLibSLDB * si_sldb_new(void) |
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362 { |
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363 return (SIDLibSLDB *) th_malloc0(sizeof(SIDLibSLDB)); |
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364 } |
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365 |
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366 |
86
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367 // Read SLDB database to memory |
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368 // |
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369 int si_sldb_read(th_ioctx *ctx, SIDLibSLDB *dbh) |
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370 { |
88
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371 char *line = NULL; |
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372 |
88
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373 if ((line = th_malloc(PSID_BUFFER_SIZE)) == NULL) |
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374 { |
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375 th_io_error(ctx, THERR_MALLOC, |
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376 "Error allocating temporary data buffer of %d bytes.\n", |
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377 PSID_BUFFER_SIZE); |
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378 return ctx->errno; |
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379 } |
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380 |
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381 while (thfgets(line, PSID_BUFFER_SIZE, ctx) != NULL) |
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382 { |
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383 SIDLibSLDBNode *tmnode; |
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384 size_t pos = 0; |
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385 ctx->line++; |
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386 |
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387 th_findnext(line, &pos); |
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388 |
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389 // Check if it is datafield |
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390 if (th_isxdigit(line[pos])) |
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391 { |
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392 // Check the length of the hash |
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393 int hashLen; |
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394 for (hashLen = 0; line[pos] && th_isxdigit(line[pos]); hashLen++, pos++); |
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395 |
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396 if (hashLen != TH_MD5HASH_LENGTH_CH) |
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397 { |
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398 th_io_error(ctx, THERR_INVALID_DATA, |
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399 "Invalid MD5-hash in SongLengthDB file '%s' line #%d:\n%s\n", |
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400 ctx->filename, ctx->line, line); |
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401 } |
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402 else |
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403 { |
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404 // Parse and add node to db |
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405 if ((tmnode = si_sldb_parse_entry(ctx, line)) != NULL) |
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406 { |
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407 si_sldb_node_insert(dbh, tmnode); |
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408 } |
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409 else |
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410 { |
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411 th_io_error(ctx, THERR_INVALID_DATA, |
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412 "Invalid entry in SongLengthDB file '%s' line #%d:\n%s\n", |
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413 ctx->filename, ctx->line, line); |
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414 } |
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415 } |
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416 } |
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417 else |
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418 if (line[pos] != ';' && line[pos] != '[' && line[pos] != 0) |
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419 { |
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420 th_io_error(ctx, THERR_INVALID_DATA, |
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421 "Invalid line in SongLengthDB file '%s' line #%d:\n%s\n", |
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422 ctx->filename, ctx->line, line); |
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423 } |
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424 } |
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425 |
88
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426 th_free(line); |
86
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427 return THERR_OK; |
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428 } |
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429 |
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430 |
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431 // Compare two given MD5-hashes. |
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432 // Return: 0 if equal |
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433 // negative if testHash1 < testHash2 |
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434 // positive if testHash1 > testHash2 |
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435 // |
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436 static int si_sldb_compare_hash(th_md5hash_t testHash1, th_md5hash_t testHash2) |
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437 { |
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438 int i, delta; |
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439 |
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440 for (i = delta = 0; i < TH_MD5HASH_LENGTH && !delta; i++) |
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441 delta = testHash1[i] - testHash2[i]; |
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442 |
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443 return delta; |
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444 } |
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445 |
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446 |
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447 // Compare two nodes. |
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448 // We assume here that we never ever get NULL-pointers. |
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449 static int si_sldb_compare_nodes(const void *node1, const void *node2) |
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450 { |
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451 return si_sldb_compare_hash( |
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452 (*(SIDLibSLDBNode **) node1)->hash, |
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453 (*(SIDLibSLDBNode **) node2)->hash); |
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454 } |
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455 |
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456 |
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457 // (Re)create index |
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458 // |
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459 int si_sldb_build_index(SIDLibSLDB * dbh) |
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460 { |
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461 SIDLibSLDBNode *node; |
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462 |
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463 // Free old index |
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464 th_free_r(&dbh->pindex); |
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465 |
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466 // Get size of db |
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467 for (node = dbh->nodes, dbh->n = 0; node != NULL; node = node->next) |
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468 dbh->n++; |
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469 |
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470 // Check number of nodes |
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471 if (dbh->n > 0) |
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472 { |
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473 size_t i; |
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474 |
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475 // Allocate memory for index-table |
88
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476 dbh->pindex = (SIDLibSLDBNode **) th_malloc(sizeof(SIDLibSLDBNode *) * dbh->n); |
86
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477 if (dbh->pindex == NULL) |
88
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478 return THERR_MALLOC; |
86
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479 |
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480 // Get node-pointers to table |
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481 for (i = 0, node = dbh->nodes; node && i < dbh->n; node = node->next) |
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482 dbh->pindex[i++] = node; |
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483 |
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484 // Sort the indexes |
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485 qsort(dbh->pindex, dbh->n, sizeof(SIDLibSLDBNode *), si_sldb_compare_nodes); |
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486 } |
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487 |
88
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488 return THERR_OK; |
86
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489 } |
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490 |
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491 |
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492 // Free a given song-length database |
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493 // |
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494 void si_sldb_free(SIDLibSLDB *dbh) |
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495 { |
88
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496 if (dbh != NULL) |
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497 { |
88
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498 SIDLibSLDBNode *node = dbh->nodes; |
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499 while (node != NULL) |
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500 { |
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501 SIDLibSLDBNode *next = node->next; |
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502 si_sldb_node_free(node); |
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503 node = next; |
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504 } |
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505 |
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506 dbh->nodes = NULL; |
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507 dbh->n = 0; |
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508 |
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509 th_free_r(&dbh->pindex); |
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510 th_free(dbh); |
86
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511 } |
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512 } |
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513 |
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514 |
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515 SIDLibSLDBNode *si_sldb_get_by_hash(SIDLibSLDB *dbh, th_md5hash_t hash) |
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516 { |
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517 SIDLibSLDBNode keyItem, *key, **item; |
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518 |
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519 memcpy(&keyItem.hash, hash, sizeof(th_md5hash_t)); |
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520 key = &keyItem; |
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521 item = bsearch(&key, dbh->pindex, dbh->n, sizeof(dbh->pindex[0]), si_sldb_compare_nodes); |
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522 |
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523 return (item != NULL) ? *item : NULL; |
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524 } |