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Revision 1.3 - (view) (download)
| 1 : | Isibaar | 1.2 | #include <stdlib.h> |
| 2 : | #include <stdio.h> | ||
| 3 : | #include "mem_align.h" | ||
| 4 : | |||
| 5 : | void *xvid_malloc(size_t size, uint8_t alignment) | ||
| 6 : | { | ||
| 7 : | edgomez | 1.3 | uint8_t *mem_ptr; |
| 8 : | Isibaar | 1.2 | |
| 9 : | edgomez | 1.3 | if(alignment == 0) |
| 10 : | { | ||
| 11 : | if((mem_ptr = (uint8_t *) malloc(size + 1)) != NULL) { | ||
| 12 : | *mem_ptr = 0; | ||
| 13 : | return (void *) mem_ptr++; | ||
| 14 : | } | ||
| 15 : | } | ||
| 16 : | else | ||
| 17 : | { | ||
| 18 : | uint8_t *tmp; | ||
| 19 : | Isibaar | 1.2 | |
| 20 : | edgomez | 1.3 | if((tmp = (uint8_t *) malloc(size + alignment)) != NULL) { |
| 21 : | mem_ptr = (uint8_t *)((uint32_t)(tmp + alignment - 1)&(~(uint32_t)(alignment - 1))); | ||
| 22 : | *(mem_ptr - 1) = (uint8_t)(mem_ptr - tmp); | ||
| 23 : | return (void *) mem_ptr; | ||
| 24 : | } | ||
| 25 : | } | ||
| 26 : | |||
| 27 : | return NULL; | ||
| 28 : | Isibaar | 1.2 | |
| 29 : | } | ||
| 30 : | |||
| 31 : | void xvid_free(void *mem_ptr) | ||
| 32 : | { | ||
| 33 : | |||
| 34 : | edgomez | 1.3 | uint8_t *real_ptr; |
| 35 : | |||
| 36 : | real_ptr = (uint8_t*)mem_ptr; | ||
| 37 : | |||
| 38 : | free(real_ptr - *(real_ptr -1)); | ||
| 39 : | Isibaar | 1.2 | |
| 40 : | } |
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