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comparison blastem.c @ 1682:a0aa9e3c9508

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Fix SMD ROM support
author Michael Pavone <pavone@retrodev.com>
date Thu, 17 Jan 2019 19:14:09 -0800
parents 357b4951d9b2
children 7e044a84268d
comparison
equal deleted inserted replaced
1681:3f1c8258e20f 1682:a0aa9e3c9508
74 uint8_t block[SMD_BLOCK_SIZE]; 74 uint8_t block[SMD_BLOCK_SIZE];
75 romseek(f, SMD_HEADER_SIZE, SEEK_SET); 75 romseek(f, SMD_HEADER_SIZE, SEEK_SET);
76 76
77 size_t filesize = 512 * 1024; 77 size_t filesize = 512 * 1024;
78 size_t readsize = 0; 78 size_t readsize = 0;
79 uint16_t *dst = malloc(filesize); 79 uint16_t *dst, *buf;
80 dst = buf = malloc(filesize);
80 81
81 82
82 size_t read; 83 size_t read;
83 do { 84 do {
84 if ((readsize + SMD_BLOCK_SIZE > filesize)) { 85 if ((readsize + SMD_BLOCK_SIZE > filesize)) {
85 filesize *= 2; 86 filesize *= 2;
86 dst = realloc(dst, filesize); 87 buf = realloc(buf, filesize);
88 dst = buf + readsize/sizeof(uint16_t);
87 } 89 }
88 read = romread(block, 1, SMD_BLOCK_SIZE, f); 90 read = romread(block, 1, SMD_BLOCK_SIZE, f);
89 if (read > 0) { 91 if (read > 0) {
90 for (uint8_t *low = block, *high = (block+read/2), *end = block+read; high < end; high++, low++) { 92 for (uint8_t *low = block, *high = (block+read/2), *end = block+read; high < end; high++, low++) {
91 *(dst++) = *low << 8 | *high; 93 *(dst++) = *low << 8 | *high;
93 readsize += read; 95 readsize += read;
94 } 96 }
95 } while(read > 0); 97 } while(read > 0);
96 romclose(f); 98 romclose(f);
97 99
98 *buffer = dst; 100 *buffer = buf;
99 101
100 return readsize; 102 return readsize;
101 } 103 }
102 104
103 uint32_t load_rom_zip(const char *filename, void **dst) 105 uint32_t load_rom_zip(const char *filename, void **dst)