Mercurial > hg > sidinfo
annotate sidlib.c @ 98:d9f38d657433
Match with th-libs API change.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Sun, 14 Feb 2016 07:54:00 +0200 |
parents | 833bb78eb658 |
children | 29a080678091 |
rev | line source |
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70
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Split some functionality into sidlib.[ch].
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1 /* |
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2 * SIDInfoLib - Way too simplistic PSID/RSID file library |
93 | 3 * Written by Matti 'ccr' Hämäläinen <ccr@tnsp.org> |
73
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 int si_read_sid_file(th_ioctx *ctx, PSIDHeader *psid) |
70
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12 { |
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13 th_md5state_t state; |
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14 uint8_t tmp8, *data = NULL; |
70
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15 int index, ret = -1; |
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16 size_t read; |
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17 BOOL first; |
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18 |
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19 memset(psid, 0, sizeof(*psid)); |
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20 |
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21 if ((data = (uint8_t *) th_malloc(PSID_BUFFER_SIZE)) == NULL) |
70
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22 { |
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23 th_io_error(ctx, THERR_MALLOC, |
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24 "Error allocating temporary data buffer of %d bytes.\n", |
77 | 25 PSID_BUFFER_SIZE); |
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26 goto error; |
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27 } |
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28 |
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29 // Read PSID header in |
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30 if (!thfread_str(ctx, (uint8_t *) psid->magic, PSID_MAGIC_LEN) || |
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31 !thfread_be16(ctx, &psid->version) || |
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32 !thfread_be16(ctx, &psid->dataOffset) || |
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33 !thfread_be16(ctx, &psid->loadAddress) || |
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34 !thfread_be16(ctx, &psid->initAddress) || |
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35 !thfread_be16(ctx, &psid->playAddress) || |
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36 !thfread_be16(ctx, &psid->nSongs) || |
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37 !thfread_be16(ctx, &psid->startSong) || |
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38 !thfread_be32(ctx, &psid->speed)) |
70
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39 { |
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40 th_io_error(ctx, ctx->errno, |
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41 "Could not read PSID/RSID header: %s.\n", |
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42 th_error_str(ctx->errno)); |
70
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43 goto error; |
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44 } |
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45 |
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46 psid->magic[PSID_MAGIC_LEN] = 0; |
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47 |
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48 if ((psid->magic[0] != 'R' && psid->magic[0] != 'P') || |
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49 psid->magic[1] != 'S' || psid->magic[2] != 'I' || psid->magic[3] != 'D' || |
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50 psid->version < 1 || psid->version > 3) |
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51 { |
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52 th_io_error(ctx, THERR_NOT_SUPPORTED, |
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53 "Not a supported PSID or RSID file.\n"); |
70
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54 goto error; |
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55 } |
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56 |
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57 psid->isRSID = psid->magic[0] == 'R'; |
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58 |
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59 if (!thfread_str(ctx, (uint8_t *) psid->sidName, PSID_STR_LEN) || |
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60 !thfread_str(ctx, (uint8_t *) psid->sidAuthor, PSID_STR_LEN) || |
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61 !thfread_str(ctx, (uint8_t *) psid->sidCopyright, PSID_STR_LEN)) |
70
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62 { |
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63 th_io_error(ctx, ctx->errno, |
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64 "Error reading SID file header: %s.\n", |
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65 th_error_str(ctx->errno)); |
70
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66 goto error; |
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67 } |
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68 |
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69 psid->sidName[PSID_STR_LEN] = 0; |
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70 psid->sidAuthor[PSID_STR_LEN] = 0; |
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71 psid->sidCopyright[PSID_STR_LEN] = 0; |
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72 |
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73 // Check if we need to load PSIDv2NG header ... |
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74 if (psid->version >= 2) |
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75 { |
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76 // Yes, we need to |
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77 if (!thfread_be16(ctx, &psid->flags) || |
98
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78 !thfread_u8(ctx, &psid->startPage) || |
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79 !thfread_u8(ctx, &psid->pageLength) || |
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80 !thfread_be16(ctx, &psid->reserved)) |
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81 { |
85
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82 th_io_error(ctx, ctx->errno, |
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83 "Error reading PSID/RSID v2+ extra header data: %s.\n", |
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84 th_error_str(ctx->errno)); |
70
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85 goto error; |
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86 } |
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87 } |
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88 |
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89 // Initialize MD5-hash calculation |
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90 th_md5_init(&state); |
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91 |
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92 // Process actual data |
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93 psid->dataSize = 0; |
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94 first = TRUE; |
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95 do |
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96 { |
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97 read = thfread(data, sizeof(uint8_t), PSID_BUFFER_SIZE, ctx); |
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98 psid->dataSize += read; |
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99 |
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100 if (first && psid->loadAddress == 0) |
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101 { |
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102 if (read < 4) |
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103 { |
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104 th_io_error(ctx, THERR_FREAD, |
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105 "Error reading song data, unexpectedly small file.\n"); |
70
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106 goto error; |
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107 } |
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108 |
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109 // Grab the actual load address |
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110 psid->loadAddress = TH_LE16_TO_NATIVE(*(uint16_t *) data); |
70
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111 |
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112 // Strip load address (2 first bytes) |
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113 th_md5_append(&state, &data[2], read - 2); |
70
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114 first = FALSE; |
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115 } |
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116 else |
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117 if (read > 0) |
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118 { |
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119 // Append "as is" |
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120 th_md5_append(&state, data, read); |
70
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121 } |
85
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122 } while (read > 0 && !thfeof(ctx)); |
70
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123 |
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124 // Append header data to hash |
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125 th_md5_append_le16(&state, psid->initAddress); |
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126 th_md5_append_le16(&state, psid->playAddress); |
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127 th_md5_append_le16(&state, psid->nSongs); |
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128 |
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129 // Append song speed data to hash |
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130 tmp8 = psid->isRSID ? 60 : 0; |
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131 for (index = 0; index < psid->nSongs && index < 32; index++) |
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132 { |
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133 if (psid->isRSID) |
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134 tmp8 = 60; |
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135 else |
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136 tmp8 = (psid->speed & (1 << index)) ? 60 : 0; |
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137 |
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138 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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139 } |
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140 |
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141 // Rest of songs (more than 32) |
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142 for (index = 32; index < psid->nSongs; index++) |
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143 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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144 |
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145 // PSIDv2NG specific |
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146 if (psid->version >= 2) |
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147 { |
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148 // REFER TO SIDPLAY HEADERS FOR MORE INFORMATION |
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149 tmp8 = (psid->flags >> 2) & 3; |
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150 if (tmp8 == 2) |
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151 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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152 } |
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153 |
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154 // Calculate the hash |
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155 th_md5_finish(&state, psid->hash); |
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156 ret = 0; |
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157 |
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158 error: |
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159 // Free buffer |
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160 th_free(data); |
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161 return ret; |
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162 } |
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163 |
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164 |
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165 const char *si_get_sid_clock_str(const int flags) |
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166 { |
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167 switch (flags & PSF_CLOCK_MASK) |
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168 { |
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169 case PSF_CLOCK_UNKNOWN : return "Unknown"; |
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170 case PSF_CLOCK_PAL : return "PAL 50Hz"; |
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171 case PSF_CLOCK_NTSC : return "NTSC 60Hz"; |
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172 case PSF_CLOCK_ANY : return "PAL / NTSC"; |
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173 default : return "?"; |
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174 } |
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175 } |
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176 |
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177 |
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178 const char *si_get_sid_model_str(const int flags) |
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179 { |
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180 switch (flags & PSF_MODEL_MASK) |
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181 { |
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182 case PSF_MODEL_UNKNOWN : return "Unknown"; |
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183 case PSF_MODEL_MOS6581 : return "MOS6581"; |
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184 case PSF_MODEL_MOS8580 : return "MOS8580"; |
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185 case PSF_MODEL_ANY : return "MOS6581 / MOS8580"; |
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186 default : return "?"; |
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187 } |
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188 } |
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189 |
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190 |
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191 // Free memory allocated for given SLDB node |
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192 // |
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193 static void si_sldb_node_free(SIDLibSLDBNode *node) |
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194 { |
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195 if (node) |
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196 { |
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197 th_free_r(&node->lengths); |
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198 th_free_r(&node); |
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199 } |
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200 } |
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201 |
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202 |
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203 // Insert given node to db linked list |
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204 // |
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205 static void si_sldb_node_insert(SIDLibSLDB *dbh, SIDLibSLDBNode *node) |
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206 { |
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207 if (dbh->nodes) |
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208 { |
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209 node->prev = dbh->nodes->prev; |
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210 dbh->nodes->prev->next = node; |
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211 dbh->nodes->prev = node; |
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212 } |
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213 else |
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214 { |
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215 dbh->nodes = node; |
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216 node->prev = node; |
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217 } |
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218 node->next = NULL; |
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219 } |
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220 |
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221 |
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222 // Parse a time-entry in SLDB format |
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223 // |
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224 static int si_sldb_get_value(const char *str, size_t *pos) |
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225 { |
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226 int result = 0; |
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227 |
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228 while (isdigit(str[*pos])) |
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229 result = (result * 10) + (str[(*pos)++] - '0'); |
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230 |
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231 return result; |
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232 } |
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233 |
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234 |
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235 static int si_sldb_gettime(const char *str, size_t *pos) |
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236 { |
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237 int result; |
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238 |
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239 // Check if it starts with a digit |
88
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240 if (th_isdigit(str[*pos])) |
86
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241 { |
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|
242 // 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
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|
243 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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parents:
85
diff
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|
244 |
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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 // 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
|
246 if (str[*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
changeset
|
247 { |
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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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|
248 // 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
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|
249 (*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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|
250 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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parents:
85
diff
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|
251 } |
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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 else |
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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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|
253 result = -2; |
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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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|
254 } |
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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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|
255 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
|
256 result = -1; |
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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
|
257 |
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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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|
258 // Ignore and skip the possible attributes |
88
c5ff71d64e53
More work on sidlib SLDB code.
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86
diff
changeset
|
259 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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|
260 (*pos)++; |
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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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|
261 |
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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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|
262 return result; |
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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
|
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 |
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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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|
265 |
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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 // 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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parents:
85
diff
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|
267 // |
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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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|
268 SIDLibSLDBNode *si_sldb_parse_entry(th_ioctx *ctx, const char *line) |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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diff
changeset
|
269 { |
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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
|
270 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
|
271 size_t pos, tmpLen, savePos; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
272 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
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|
273 int i; |
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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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|
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 // 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
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changeset
|
276 node = (SIDLibSLDBNode *) th_malloc0(sizeof(SIDLibSLDBNode)); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
277 if (node == NULL) |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
278 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
279 th_io_error(ctx, THERR_MALLOC, |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
280 "Error allocating new node.\n"); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
281 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
|
282 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
283 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
284 // Get hash value |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
285 pos = 0; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
286 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
|
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 unsigned int tmpu; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
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changeset
|
289 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
|
290 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
|
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 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
293 // Get playtimes |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
294 th_findnext(line, &pos); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
295 if (line[pos] != '=') |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
296 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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85
diff
changeset
|
297 th_io_error(ctx, THERR_INVALID_DATA, |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
298 "'=' expected on column #%d.\n", pos); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
299 goto error; |
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.
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parents:
85
diff
changeset
|
301 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
302 // 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
|
303 savePos = ++pos; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
304 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
|
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 // 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
|
307 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
|
308 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
|
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 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
|
311 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
312 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
|
313 node->nlengths++; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
314 else |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
315 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
|
316 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
317 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
318 // 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
|
319 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
|
320 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
|
321 |
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->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
|
323 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
|
324 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
325 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
|
326 "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
|
327 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
|
328 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
329 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
330 // 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
|
331 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
|
332 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
|
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 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
|
335 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
|
336 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
337 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
|
338 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
|
339 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
|
340 else |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
341 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
|
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 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
344 return node; |
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 error: |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
347 si_sldb_node_free(node); |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
348 return NULL; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
349 } |
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350 |
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351 |
88
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352 SIDLibSLDB * si_sldb_new(void) |
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353 { |
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354 return (SIDLibSLDB *) th_malloc0(sizeof(SIDLibSLDB)); |
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355 } |
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356 |
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357 |
86
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358 // Read SLDB database to memory |
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359 // |
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360 int si_sldb_read(th_ioctx *ctx, SIDLibSLDB *dbh) |
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361 { |
88
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362 char *line = NULL; |
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363 |
88
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364 if ((line = th_malloc(PSID_BUFFER_SIZE)) == NULL) |
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365 { |
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366 th_io_error(ctx, THERR_MALLOC, |
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367 "Error allocating temporary data buffer of %d bytes.\n", |
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368 PSID_BUFFER_SIZE); |
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369 return ctx->errno; |
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370 } |
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371 |
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372 while (thfgets(line, PSID_BUFFER_SIZE, ctx) != NULL) |
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373 { |
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374 SIDLibSLDBNode *tmnode; |
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375 size_t pos = 0; |
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376 ctx->line++; |
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377 |
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378 th_findnext(line, &pos); |
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379 |
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380 // Check if it is datafield |
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381 if (th_isxdigit(line[pos])) |
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382 { |
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383 // Check the length of the hash |
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384 int hashLen; |
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385 for (hashLen = 0; line[pos] && th_isxdigit(line[pos]); hashLen++, pos++); |
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386 |
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387 if (hashLen != TH_MD5HASH_LENGTH_CH) |
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388 { |
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389 th_io_error(ctx, THERR_INVALID_DATA, |
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390 "Invalid MD5-hash in SongLengthDB file '%s' line #%d:\n%s\n", |
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391 ctx->filename, ctx->line, line); |
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392 } |
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393 else |
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394 { |
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395 // Parse and add node to db |
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396 if ((tmnode = si_sldb_parse_entry(ctx, line)) != NULL) |
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397 { |
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398 si_sldb_node_insert(dbh, tmnode); |
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399 } |
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400 else |
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401 { |
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402 th_io_error(ctx, THERR_INVALID_DATA, |
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403 "Invalid entry in SongLengthDB file '%s' line #%d:\n%s\n", |
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404 ctx->filename, ctx->line, line); |
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405 } |
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406 } |
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407 } |
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408 else |
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409 if (line[pos] != ';' && line[pos] != '[' && line[pos] != 0) |
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410 { |
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411 th_io_error(ctx, THERR_INVALID_DATA, |
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412 "Invalid line 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 |
88
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417 th_free(line); |
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418 return THERR_OK; |
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419 } |
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420 |
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421 |
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422 // Compare two given MD5-hashes. |
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423 // Return: 0 if equal |
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424 // negative if testHash1 < testHash2 |
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425 // positive if testHash1 > testHash2 |
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426 // |
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427 static int si_sldb_compare_hash(th_md5hash_t testHash1, th_md5hash_t testHash2) |
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428 { |
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429 int i, delta; |
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430 |
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431 for (i = delta = 0; i < TH_MD5HASH_LENGTH && !delta; i++) |
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432 delta = testHash1[i] - testHash2[i]; |
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433 |
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434 return delta; |
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435 } |
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436 |
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437 |
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438 // Compare two nodes. |
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439 // We assume here that we never ever get NULL-pointers. |
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440 static int si_sldb_compare_nodes(const void *node1, const void *node2) |
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441 { |
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442 return si_sldb_compare_hash( |
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443 (*(SIDLibSLDBNode **) node1)->hash, |
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444 (*(SIDLibSLDBNode **) node2)->hash); |
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445 } |
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446 |
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447 |
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448 // (Re)create index |
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449 // |
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450 int si_sldb_build_index(SIDLibSLDB * dbh) |
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451 { |
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452 SIDLibSLDBNode *node; |
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453 |
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454 // Free old index |
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455 th_free_r(&dbh->pindex); |
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456 |
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457 // Get size of db |
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458 for (node = dbh->nodes, dbh->n = 0; node != NULL; node = node->next) |
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459 dbh->n++; |
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460 |
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461 // Check number of nodes |
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462 if (dbh->n > 0) |
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463 { |
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464 size_t i; |
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465 |
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466 // Allocate memory for index-table |
88
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467 dbh->pindex = (SIDLibSLDBNode **) th_malloc(sizeof(SIDLibSLDBNode *) * dbh->n); |
86
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468 if (dbh->pindex == NULL) |
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469 return THERR_MALLOC; |
86
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470 |
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471 // Get node-pointers to table |
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472 for (i = 0, node = dbh->nodes; node && i < dbh->n; node = node->next) |
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473 dbh->pindex[i++] = node; |
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474 |
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475 // Sort the indexes |
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476 qsort(dbh->pindex, dbh->n, sizeof(SIDLibSLDBNode *), si_sldb_compare_nodes); |
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477 } |
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478 |
88
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479 return THERR_OK; |
86
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480 } |
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481 |
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482 |
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483 // Free a given song-length database |
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484 // |
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485 void si_sldb_free(SIDLibSLDB *dbh) |
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486 { |
88
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487 if (dbh != NULL) |
86
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488 { |
88
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489 SIDLibSLDBNode *node = dbh->nodes; |
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490 while (node != NULL) |
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491 { |
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492 SIDLibSLDBNode *next = node->next; |
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493 si_sldb_node_free(node); |
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494 node = next; |
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495 } |
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496 |
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497 dbh->nodes = NULL; |
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498 dbh->n = 0; |
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499 |
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500 th_free_r(&dbh->pindex); |
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501 th_free(dbh); |
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502 } |
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503 } |
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504 |
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505 |
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506 SIDLibSLDBNode *si_sldb_get_by_hash(SIDLibSLDB *dbh, th_md5hash_t hash) |
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507 { |
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508 SIDLibSLDBNode keyItem, *key, **item; |
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509 |
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510 memcpy(&keyItem.hash, hash, sizeof(th_md5hash_t)); |
86
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511 key = &keyItem; |
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512 item = bsearch(&key, dbh->pindex, dbh->n, sizeof(dbh->pindex[0]), si_sldb_compare_nodes); |
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513 |
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514 return (item != NULL) ? *item : NULL; |
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515 } |