Mercurial > hg > sidinfo
annotate sidlib.c @ 104:09ca9d9a8710
Change to match changed th_ioctx API.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Mon, 15 Feb 2016 06:07:50 +0200 |
parents | ff6d1a9a2fde |
children | c1462b7880e8 |
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 |
103
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11 #define SIDLIB_DB_MAGIC "SIDLibDB" |
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12 #define SIDLIB_DB_VERSION 0x0100 |
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13 |
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14 |
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15 typedef struct |
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16 { |
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17 char magic[8]; // File magic ID |
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18 uint16_t version; // Version |
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19 uint32_t nnodes; // Number of song nodes |
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20 // struct { |
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21 // th_md5hash_t hash; // Hash for this SID file |
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22 // uint16_t nlengths; // Number of song (lengths) |
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23 // uint16_t length[nlengths]; // Length in seconds |
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24 // } * nnodes; |
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25 th_md5hash_t hash; |
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26 } PSIDLibHdr; |
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27 |
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28 |
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29 int si_read_sid_file(th_ioctx *ctx, PSIDHeader *psid) |
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30 { |
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31 th_md5state_t state; |
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32 uint8_t tmp8, *data = NULL; |
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33 int index, ret = -1; |
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34 size_t read; |
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35 BOOL first; |
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36 |
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37 memset(psid, 0, sizeof(*psid)); |
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38 |
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39 if ((data = (uint8_t *) th_malloc(PSID_BUFFER_SIZE)) == NULL) |
70
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40 { |
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41 th_io_error(ctx, THERR_MALLOC, |
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42 "Error allocating temporary data buffer of %d bytes.\n", |
77 | 43 PSID_BUFFER_SIZE); |
70
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44 goto error; |
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45 } |
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46 |
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47 // Read PSID header in |
85
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48 if (!thfread_str(ctx, (uint8_t *) psid->magic, PSID_MAGIC_LEN) || |
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49 !thfread_be16(ctx, &psid->version) || |
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50 !thfread_be16(ctx, &psid->dataOffset) || |
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51 !thfread_be16(ctx, &psid->loadAddress) || |
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52 !thfread_be16(ctx, &psid->initAddress) || |
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53 !thfread_be16(ctx, &psid->playAddress) || |
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54 !thfread_be16(ctx, &psid->nSongs) || |
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55 !thfread_be16(ctx, &psid->startSong) || |
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56 !thfread_be32(ctx, &psid->speed)) |
70
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57 { |
104
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58 th_io_error(ctx, ctx->status, |
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59 "Could not read PSID/RSID header: %s.\n", |
104
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60 th_error_str(ctx->status)); |
70
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61 goto error; |
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62 } |
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63 |
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64 psid->magic[PSID_MAGIC_LEN] = 0; |
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65 |
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66 if ((psid->magic[0] != 'R' && psid->magic[0] != 'P') || |
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67 psid->magic[1] != 'S' || psid->magic[2] != 'I' || psid->magic[3] != 'D' || |
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68 psid->version < 1 || psid->version > 3) |
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69 { |
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70 th_io_error(ctx, THERR_NOT_SUPPORTED, |
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71 "Not a supported PSID or RSID file.\n"); |
70
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72 goto error; |
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73 } |
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74 |
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75 psid->isRSID = psid->magic[0] == 'R'; |
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76 |
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77 if (!thfread_str(ctx, (uint8_t *) psid->sidName, PSID_STR_LEN) || |
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78 !thfread_str(ctx, (uint8_t *) psid->sidAuthor, PSID_STR_LEN) || |
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79 !thfread_str(ctx, (uint8_t *) psid->sidCopyright, PSID_STR_LEN)) |
70
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80 { |
104
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81 th_io_error(ctx, ctx->status, |
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82 "Error reading SID file header: %s.\n", |
104
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83 th_error_str(ctx->status)); |
70
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84 goto error; |
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85 } |
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86 |
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87 psid->sidName[PSID_STR_LEN] = 0; |
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88 psid->sidAuthor[PSID_STR_LEN] = 0; |
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89 psid->sidCopyright[PSID_STR_LEN] = 0; |
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90 |
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91 // Check if we need to load PSIDv2NG header ... |
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92 if (psid->version >= 2) |
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93 { |
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94 // Yes, we need to |
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95 if (!thfread_be16(ctx, &psid->flags) || |
98
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96 !thfread_u8(ctx, &psid->startPage) || |
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97 !thfread_u8(ctx, &psid->pageLength) || |
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98 !thfread_be16(ctx, &psid->reserved)) |
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99 { |
104
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100 th_io_error(ctx, ctx->status, |
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101 "Error reading PSID/RSID v2+ extra header data: %s.\n", |
104
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102 th_error_str(ctx->status)); |
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103 goto error; |
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104 } |
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105 } |
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106 |
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107 // Initialize MD5-hash calculation |
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108 th_md5_init(&state); |
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109 |
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110 // Process actual data |
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111 psid->dataSize = 0; |
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112 first = TRUE; |
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113 do |
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114 { |
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115 read = thfread(data, sizeof(uint8_t), PSID_BUFFER_SIZE, ctx); |
70
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116 psid->dataSize += read; |
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117 |
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118 if (first && psid->loadAddress == 0) |
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119 { |
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120 if (read < 4) |
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121 { |
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122 th_io_error(ctx, THERR_FREAD, |
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123 "Error reading song data, unexpectedly small file.\n"); |
70
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|
124 goto error; |
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|
125 } |
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|
126 |
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|
127 // Grab the actual load address |
85
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128 psid->loadAddress = TH_LE16_TO_NATIVE(*(uint16_t *) data); |
70
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129 |
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130 // Strip load address (2 first bytes) |
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131 th_md5_append(&state, &data[2], read - 2); |
70
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|
132 first = FALSE; |
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133 } |
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134 else |
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135 if (read > 0) |
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|
136 { |
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137 // Append "as is" |
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138 th_md5_append(&state, data, read); |
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139 } |
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140 } while (read > 0 && !thfeof(ctx)); |
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141 |
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142 // Append header data to hash |
95
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143 th_md5_append_le16(&state, psid->initAddress); |
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144 th_md5_append_le16(&state, psid->playAddress); |
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145 th_md5_append_le16(&state, psid->nSongs); |
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146 |
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147 // Append song speed data to hash |
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|
148 tmp8 = psid->isRSID ? 60 : 0; |
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149 for (index = 0; index < psid->nSongs && index < 32; index++) |
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150 { |
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151 if (psid->isRSID) |
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|
152 tmp8 = 60; |
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153 else |
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|
154 tmp8 = (psid->speed & (1 << index)) ? 60 : 0; |
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155 |
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156 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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157 } |
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158 |
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159 // Rest of songs (more than 32) |
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|
160 for (index = 32; index < psid->nSongs; index++) |
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161 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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162 |
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163 // PSIDv2NG specific |
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164 if (psid->version >= 2) |
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165 { |
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|
166 // REFER TO SIDPLAY HEADERS FOR MORE INFORMATION |
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167 tmp8 = (psid->flags >> 2) & 3; |
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|
168 if (tmp8 == 2) |
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|
169 th_md5_append(&state, &tmp8, sizeof(tmp8)); |
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|
170 } |
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|
171 |
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|
172 // Calculate the hash |
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|
173 th_md5_finish(&state, psid->hash); |
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|
174 ret = 0; |
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|
175 |
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|
176 error: |
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|
177 // Free buffer |
85
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|
178 th_free(data); |
70
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|
179 return ret; |
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|
180 } |
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181 |
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182 |
85
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183 const char *si_get_sid_clock_str(const int flags) |
70
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|
184 { |
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|
185 switch (flags & PSF_CLOCK_MASK) |
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|
186 { |
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|
187 case PSF_CLOCK_UNKNOWN : return "Unknown"; |
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|
188 case PSF_CLOCK_PAL : return "PAL 50Hz"; |
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|
189 case PSF_CLOCK_NTSC : return "NTSC 60Hz"; |
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|
190 case PSF_CLOCK_ANY : return "PAL / NTSC"; |
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|
191 default : return "?"; |
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|
192 } |
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|
193 } |
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|
194 |
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195 |
85
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|
196 const char *si_get_sid_model_str(const int flags) |
70
4779bbec2f28
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|
197 { |
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|
198 switch (flags & PSF_MODEL_MASK) |
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|
199 { |
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|
200 case PSF_MODEL_UNKNOWN : return "Unknown"; |
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|
201 case PSF_MODEL_MOS6581 : return "MOS6581"; |
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|
202 case PSF_MODEL_MOS8580 : return "MOS8580"; |
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|
203 case PSF_MODEL_ANY : return "MOS6581 / MOS8580"; |
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|
204 default : return "?"; |
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|
205 } |
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|
206 } |
86
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|
207 |
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208 |
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|
209 // Free memory allocated for given SLDB node |
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|
210 // |
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|
211 static void si_sldb_node_free(SIDLibSLDBNode *node) |
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212 { |
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|
213 if (node) |
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214 { |
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|
215 th_free_r(&node->lengths); |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
216 th_free_r(&node); |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
217 } |
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|
218 } |
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219 |
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220 |
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|
221 // Insert given node to db linked list |
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|
222 // |
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|
223 static void si_sldb_node_insert(SIDLibSLDB *dbh, SIDLibSLDBNode *node) |
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224 { |
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|
225 if (dbh->nodes) |
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226 { |
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|
227 node->prev = dbh->nodes->prev; |
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|
228 dbh->nodes->prev->next = node; |
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|
229 dbh->nodes->prev = node; |
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230 } |
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231 else |
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232 { |
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|
233 dbh->nodes = node; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
234 node->prev = node; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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235 } |
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|
236 node->next = NULL; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
237 } |
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238 |
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239 |
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|
240 // Parse a time-entry in SLDB format |
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|
241 // |
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|
242 static int si_sldb_get_value(const char *str, size_t *pos) |
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243 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
244 int result = 0; |
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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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|
245 |
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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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|
246 while (isdigit(str[*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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|
247 result = (result * 10) + (str[(*pos)++] - '0'); |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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248 |
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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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|
249 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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|
250 } |
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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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|
251 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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252 |
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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 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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254 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
255 int result; |
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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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|
256 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
257 // Check if it starts with a digit |
88
c5ff71d64e53
More work on sidlib SLDB code.
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86
diff
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|
258 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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259 { |
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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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|
260 // Get minutes-field |
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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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|
261 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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262 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
263 // 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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85
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changeset
|
264 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
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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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|
266 // Get seconds-field |
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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 (*pos)++; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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268 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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269 } |
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270 else |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
271 result = -2; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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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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273 else |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
274 result = -1; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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275 |
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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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|
276 // Ignore and skip the possible attributes |
88
c5ff71d64e53
More work on sidlib SLDB code.
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86
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|
277 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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|
278 (*pos)++; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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279 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
280 return result; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
281 } |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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282 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
283 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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diff
changeset
|
284 // 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
|
285 // |
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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
|
286 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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|
287 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
288 SIDLibSLDBNode *node = NULL; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
289 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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changeset
|
290 BOOL isOK; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
291 int i; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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292 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
293 // Allocate new node |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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|
294 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
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changeset
|
295 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
|
296 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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changeset
|
297 th_io_error(ctx, THERR_MALLOC, |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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changeset
|
298 "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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85
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changeset
|
299 return 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
|
300 } |
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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
|
301 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
302 // Get hash value |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
303 pos = 0; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
304 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
|
305 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
306 unsigned int tmpu; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
307 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
|
308 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
|
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 // 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
|
312 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
|
313 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
|
314 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
315 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
|
316 "'=' 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
|
317 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
|
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 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
320 // 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
|
321 savePos = ++pos; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
85
diff
changeset
|
322 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
|
323 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
324 // 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
|
325 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
|
326 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
|
327 { |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
328 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
|
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 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
|
331 node->nlengths++; |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
332 else |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
333 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
|
334 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
335 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
336 // 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
|
337 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
|
338 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
|
339 |
99 | 340 node->lengths = (int *) th_calloc(node->nlengths, sizeof(int)); |
86
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
341 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
|
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 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
|
344 "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
|
345 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
|
346 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
347 |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
diff
changeset
|
348 // 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
|
349 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
|
350 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
|
351 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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352 int l; |
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353 th_findnext(line, &pos); |
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354 |
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355 l = si_sldb_gettime(line, &pos); |
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356 if (l >= 0) |
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357 node->lengths[i] = l; |
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358 else |
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359 isOK = FALSE; |
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360 } |
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361 |
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362 return node; |
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363 |
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364 error: |
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365 si_sldb_node_free(node); |
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366 return NULL; |
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367 } |
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368 |
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369 |
88
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370 SIDLibSLDB * si_sldb_new(void) |
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371 { |
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372 return (SIDLibSLDB *) th_malloc0(sizeof(SIDLibSLDB)); |
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373 } |
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374 |
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375 |
86
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376 // Read SLDB database to memory |
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377 // |
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378 int si_sldb_read(th_ioctx *ctx, SIDLibSLDB *dbh) |
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379 { |
88
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380 char *line = NULL; |
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381 |
88
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382 if ((line = th_malloc(PSID_BUFFER_SIZE)) == NULL) |
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383 { |
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384 th_io_error(ctx, THERR_MALLOC, |
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385 "Error allocating temporary data buffer of %d bytes.\n", |
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386 PSID_BUFFER_SIZE); |
104
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387 return ctx->status; |
88
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388 } |
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389 |
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390 while (thfgets(line, PSID_BUFFER_SIZE, ctx) != NULL) |
86
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391 { |
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392 SIDLibSLDBNode *tmnode; |
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393 size_t pos = 0; |
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394 ctx->line++; |
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395 |
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396 th_findnext(line, &pos); |
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397 |
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398 // Check if it is datafield |
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399 if (th_isxdigit(line[pos])) |
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400 { |
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401 // Check the length of the hash |
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402 int hashLen; |
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403 for (hashLen = 0; line[pos] && th_isxdigit(line[pos]); hashLen++, pos++); |
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404 |
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405 if (hashLen != TH_MD5HASH_LENGTH_CH) |
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406 { |
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407 th_io_error(ctx, THERR_INVALID_DATA, |
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408 "Invalid MD5-hash in SongLengthDB file '%s' line #%d:\n%s\n", |
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409 ctx->filename, ctx->line, line); |
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410 } |
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411 else |
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412 { |
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413 // Parse and add node to db |
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414 if ((tmnode = si_sldb_parse_entry(ctx, line)) != NULL) |
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415 { |
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416 si_sldb_node_insert(dbh, tmnode); |
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417 } |
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418 else |
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419 { |
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420 th_io_error(ctx, THERR_INVALID_DATA, |
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421 "Invalid entry 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 } |
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426 else |
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427 if (line[pos] != ';' && line[pos] != '[' && line[pos] != 0) |
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428 { |
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429 th_io_error(ctx, THERR_INVALID_DATA, |
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430 "Invalid line in SongLengthDB file '%s' line #%d:\n%s\n", |
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431 ctx->filename, ctx->line, line); |
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432 } |
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433 } |
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434 |
88
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435 th_free(line); |
86
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436 return THERR_OK; |
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437 } |
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438 |
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439 |
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440 // Compare two given MD5-hashes. |
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441 // Return: 0 if equal |
102 | 442 // negative if hash1 < hash2 |
443 // positive if hash1 > hash2 | |
86
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444 // |
102 | 445 static int si_sldb_compare_hash(th_md5hash_t hash1, th_md5hash_t hash2) |
86
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446 { |
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447 int i, delta; |
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448 |
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449 for (i = delta = 0; i < TH_MD5HASH_LENGTH && !delta; i++) |
102 | 450 delta = hash1[i] - hash2[i]; |
86
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451 |
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452 return delta; |
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453 } |
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454 |
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455 |
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456 // Compare two nodes. |
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457 // We assume here that we never ever get NULL-pointers. |
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458 static int si_sldb_compare_nodes(const void *node1, const void *node2) |
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459 { |
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460 return si_sldb_compare_hash( |
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461 (*(SIDLibSLDBNode **) node1)->hash, |
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462 (*(SIDLibSLDBNode **) node2)->hash); |
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463 } |
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464 |
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465 |
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466 // (Re)create index |
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467 // |
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468 int si_sldb_build_index(SIDLibSLDB * dbh) |
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469 { |
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470 SIDLibSLDBNode *node; |
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471 |
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472 // Free old index |
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473 th_free_r(&dbh->pindex); |
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474 |
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475 // Get size of db |
100 | 476 for (node = dbh->nodes, dbh->nnodes = 0; node != NULL; node = node->next) |
477 dbh->nnodes++; | |
86
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478 |
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479 // Check number of nodes |
100 | 480 if (dbh->nnodes > 0) |
86
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481 { |
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482 size_t i; |
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483 |
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484 // Allocate memory for index-table |
100 | 485 dbh->pindex = (SIDLibSLDBNode **) th_malloc(sizeof(SIDLibSLDBNode *) * dbh->nnodes); |
86
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486 if (dbh->pindex == NULL) |
88
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487 return THERR_MALLOC; |
86
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488 |
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489 // Get node-pointers to table |
100 | 490 for (i = 0, node = dbh->nodes; node && i < dbh->nnodes; node = node->next) |
86
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491 dbh->pindex[i++] = node; |
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492 |
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493 // Sort the indexes |
100 | 494 qsort(dbh->pindex, dbh->nnodes, sizeof(SIDLibSLDBNode *), si_sldb_compare_nodes); |
86
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495 } |
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496 |
88
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497 return THERR_OK; |
86
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498 } |
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499 |
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500 |
103
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501 // |
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502 // Read binary format SLDB |
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503 // |
101
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504 int si_sldb_read_bin(th_ioctx *ctx, SIDLibSLDB *dbh) |
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505 { |
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506 PSIDLibHdr hdr; |
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507 th_md5state_t state; |
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508 th_md5hash_t hash; |
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509 size_t n; |
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510 |
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511 // Check pointers |
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512 if (ctx == NULL || dbh == NULL) |
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513 return THERR_NULLPTR; |
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514 |
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515 if (!thfread_str(ctx, &hdr.magic, sizeof(hdr.magic)) || |
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516 !thfread_le16(ctx, &hdr.version) || |
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517 !thfread_le32(ctx, &hdr.nnodes)) |
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518 return THERR_FREAD; |
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519 |
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520 // Check magic and version |
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521 if (memcmp(hdr.magic, SIDLIB_DB_MAGIC, sizeof(hdr.magic)) != 0) |
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522 return THERR_NOT_SUPPORTED; |
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523 |
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524 if (hdr.version != SIDLIB_DB_VERSION) |
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525 return THERR_NOT_SUPPORTED; |
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526 |
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527 // Make some reasonable assumptions about validity |
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528 if (hdr.nnodes == 0 || hdr.nnodes > 256*1024) |
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529 return THERR_INVALID_DATA; |
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530 |
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531 th_md5_init(&state); |
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532 th_md5_append_ne16(&state, hdr.version); |
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533 th_md5_append_ne32(&state, hdr.nnodes); |
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534 |
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535 // Allocate index |
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536 dbh->nnodes = hdr.nnodes; |
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537 dbh->pindex = (SIDLibSLDBNode **) th_malloc(sizeof(SIDLibSLDBNode *) * dbh->nnodes); |
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538 if (dbh->pindex == NULL) |
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539 return THERR_MALLOC; |
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540 |
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541 // Read nodes |
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542 for (n = 0; n < dbh->nnodes; n++) |
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543 { |
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544 SIDLibSLDBNode *node; |
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545 th_md5hash_t mhash; |
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546 uint16_t tmpn; |
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547 int index; |
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548 |
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549 // Read node hash and nlengths |
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550 if (!thfread_str(ctx, mhash, TH_MD5HASH_LENGTH) || |
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551 !thfread_le16(ctx, &tmpn)) |
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552 return THERR_FREAD; |
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553 |
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554 // Sanity check |
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555 if (tmpn == 0 || tmpn > 2048) |
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556 return THERR_INVALID_DATA; |
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557 |
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558 // Append to hash |
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559 th_md5_append(&state, mhash, TH_MD5HASH_LENGTH); |
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560 th_md5_append_ne16(&state, tmpn); |
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561 |
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562 // Allocate node |
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563 node = (SIDLibSLDBNode *) th_malloc0(sizeof(SIDLibSLDBNode)); |
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564 if (node == NULL) |
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565 return THERR_MALLOC; |
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566 |
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567 node->nlengths = tmpn; |
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568 memcpy(node->hash, mhash, sizeof(mhash)); |
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569 |
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570 node->lengths = (int *) th_calloc(node->nlengths, sizeof(int)); |
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571 if (node->lengths == NULL) |
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572 { |
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573 th_free(node); |
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574 th_io_error(ctx, THERR_MALLOC, |
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575 "Could not allocate memory for node.\n"); |
104
09ca9d9a8710
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576 return ctx->status; |
101
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577 } |
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578 |
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579 // Read node lenghts |
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580 for (index = 0; index < node->nlengths; index++) |
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581 { |
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582 uint16_t tmpl; |
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583 if (!thfread_le16(ctx, &tmpl)) |
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584 return THERR_FREAD; |
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585 |
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586 th_md5_append_ne16(&state, tmpl); |
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587 node->lengths[index] = tmpl; |
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changeset
|
588 } |
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589 |
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590 si_sldb_node_insert(dbh, node); |
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|
591 dbh->pindex[n] = node; |
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changeset
|
592 } |
9d4d1783800b
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|
593 |
9d4d1783800b
Add si_sldb_{read,write}_bin() functions to write and read a binary format
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changeset
|
594 // Read stored checksum hash |
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|
595 if (!thfread_str(ctx, hdr.hash, sizeof(hdr.hash))) |
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|
596 return THERR_FREAD; |
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diff
changeset
|
597 |
9d4d1783800b
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100
diff
changeset
|
598 // Compare to what we get |
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|
599 th_md5_finish(&state, hash); |
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600 if (memcmp(hash, hdr.hash, sizeof(hdr.hash)) != 0) |
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diff
changeset
|
601 return THERR_INVALID_DATA; |
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changeset
|
602 |
9d4d1783800b
Add si_sldb_{read,write}_bin() functions to write and read a binary format
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diff
changeset
|
603 return THERR_OK; |
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diff
changeset
|
604 } |
9d4d1783800b
Add si_sldb_{read,write}_bin() functions to write and read a binary format
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100
diff
changeset
|
605 |
9d4d1783800b
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100
diff
changeset
|
606 |
9d4d1783800b
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diff
changeset
|
607 int si_sldb_write_bin(th_ioctx *ctx, SIDLibSLDB *dbh) |
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608 { |
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609 th_md5state_t state; |
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changeset
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610 th_md5hash_t hash; |
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611 size_t n; |
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612 |
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613 // Check pointers |
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614 if (ctx == NULL || dbh == NULL) |
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615 return THERR_NULLPTR; |
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100
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changeset
|
616 |
9d4d1783800b
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changeset
|
617 // Write header |
9d4d1783800b
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618 if (!thfwrite_str(ctx, SIDLIB_DB_MAGIC, 8) || |
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619 !thfwrite_le16(ctx, SIDLIB_DB_VERSION) || |
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620 !thfwrite_le32(ctx, dbh->nnodes)) |
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changeset
|
621 return THERR_FWRITE; |
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|
622 |
9d4d1783800b
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623 th_md5_init(&state); |
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624 th_md5_append_ne16(&state, SIDLIB_DB_VERSION); |
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625 th_md5_append_ne32(&state, dbh->nnodes); |
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|
626 |
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627 // Write nodes |
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|
628 for (n = 0; n < dbh->nnodes; n++) |
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|
629 { |
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changeset
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630 SIDLibSLDBNode *node = dbh->pindex[n]; |
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changeset
|
631 uint16_t tmpn; |
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632 int index; |
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|
633 |
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634 // Sanity check |
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diff
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635 if (node->nlengths <= 0 || node->nlengths > 2048) |
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636 return THERR_INVALID_DATA; |
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changeset
|
637 |
9d4d1783800b
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|
638 tmpn = node->nlengths; |
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639 th_md5_append(&state, node->hash, TH_MD5HASH_LENGTH); |
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|
640 th_md5_append_ne16(&state, tmpn); |
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|
641 |
9d4d1783800b
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642 // Write node data |
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643 if (!thfwrite_str(ctx, node->hash, TH_MD5HASH_LENGTH) || |
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644 !thfwrite_le16(ctx, tmpn)) |
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645 return THERR_FWRITE; |
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changeset
|
646 |
9d4d1783800b
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diff
changeset
|
647 for (index = 0; index < node->nlengths; index++) |
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|
648 { |
9d4d1783800b
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diff
changeset
|
649 if (node->lengths[index] > 16378) |
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650 return THERR_INVALID_DATA; |
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|
651 |
9d4d1783800b
Add si_sldb_{read,write}_bin() functions to write and read a binary format
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|
652 if (!thfwrite_le16(ctx, node->lengths[index])) |
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|
653 return THERR_FWRITE; |
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|
654 |
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655 th_md5_append_ne16(&state, node->lengths[index]); |
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656 } |
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|
657 } |
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|
658 |
9d4d1783800b
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659 th_md5_finish(&state, hash); |
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660 if (!thfwrite_str(ctx, hash, sizeof(hash))) |
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661 return THERR_FWRITE; |
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|
662 |
9d4d1783800b
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|
663 return THERR_OK; |
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664 } |
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|
665 |
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|
666 |
86
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
667 // Free a given song-length database |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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diff
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|
668 // |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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diff
changeset
|
669 void si_sldb_free(SIDLibSLDB *dbh) |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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parents:
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diff
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|
670 { |
88
c5ff71d64e53
More work on sidlib SLDB code.
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parents:
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diff
changeset
|
671 if (dbh != NULL) |
86
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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diff
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|
672 { |
88
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More work on sidlib SLDB code.
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changeset
|
673 SIDLibSLDBNode *node = dbh->nodes; |
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More work on sidlib SLDB code.
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changeset
|
674 while (node != NULL) |
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More work on sidlib SLDB code.
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|
675 { |
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|
676 SIDLibSLDBNode *next = node->next; |
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changeset
|
677 si_sldb_node_free(node); |
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|
678 node = next; |
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|
679 } |
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More work on sidlib SLDB code.
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680 |
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More work on sidlib SLDB code.
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681 dbh->nodes = NULL; |
100 | 682 dbh->nnodes = 0; |
88
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More work on sidlib SLDB code.
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683 |
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More work on sidlib SLDB code.
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684 th_free_r(&dbh->pindex); |
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More work on sidlib SLDB code.
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685 th_free(dbh); |
86
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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686 } |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
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687 } |
e1ff9cd27a84
Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
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688 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
85
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689 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
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690 SIDLibSLDBNode *si_sldb_get_by_hash(SIDLibSLDB *dbh, th_md5hash_t hash) |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
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691 { |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
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692 SIDLibSLDBNode keyItem, *key, **item; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
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693 |
88
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694 memcpy(&keyItem.hash, hash, sizeof(th_md5hash_t)); |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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695 key = &keyItem; |
100 | 696 item = bsearch(&key, dbh->pindex, dbh->nnodes, sizeof(dbh->pindex[0]), si_sldb_compare_nodes); |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
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697 |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
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698 return (item != NULL) ? *item : NULL; |
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Initial port of songlength database (SLDB) handling code from XMMS-SID to here.
Matti Hamalainen <ccr@tnsp.org>
parents:
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699 } |