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comparison sidlib.c @ 162:7359170fbb7f

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Clarify some comments.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 16 Feb 2018 21:24:28 +0200
parents 27365eae837b
children 179ffe97599c
comparison
equal deleted inserted replaced
161:58fe784a6e48 162:7359170fbb7f
137 do 137 do
138 { 138 {
139 read = thfread(data, sizeof(uint8_t), PSID_BUFFER_SIZE, ctx); 139 read = thfread(data, sizeof(uint8_t), PSID_BUFFER_SIZE, ctx);
140 psid->dataSize += read; 140 psid->dataSize += read;
141 141
142 // If load address is 0 in header and we have the first block, grab it
142 if (first && psid->loadAddress == 0) 143 if (first && psid->loadAddress == 0)
143 { 144 {
144 if (read < 4) 145 if (read < 4)
145 { 146 {
146 th_io_error(ctx, THERR_FREAD, 147 th_io_error(ctx, THERR_FREAD,
147 "Error reading song data, unexpectedly small file.\n"); 148 "Error reading song data, unexpectedly small file.\n");
148 goto error; 149 goto error;
149 } 150 }
150 151
151 // Grab the actual load address 152 // Grab the load address
152 psid->loadAddress = TH_LE16_TO_NATIVE(*(uint16_t *) data); 153 psid->loadAddress = TH_LE16_TO_NATIVE(*(uint16_t *) data);
153 154
154 // Strip load address (2 first bytes) 155 // .. do not include the load address to the hash
155 th_md5_append(&state, &data[2], read - 2); 156 th_md5_append(&state, &data[2], read - 2);
156 first = FALSE; 157 first = FALSE;
157 } 158 }
158 else 159 else
159 if (read > 0) 160 if (read > 0)
160 { 161 {
161 // Append "as is" 162 // Append data "as is"
162 th_md5_append(&state, data, read); 163 th_md5_append(&state, data, read);
163 } 164 }
164 } while (read > 0 && !thfeof(ctx)); 165 } while (read > 0 && !thfeof(ctx));
165 166
166 // Append header data to hash 167 // Append header data to hash