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#include <stdlib.h> |
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#include <stdio.h> |
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#include "mem_align.h" |
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void *xvid_malloc(size_t size, uint8_t alignment) |
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{ |
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uint8_t *mem_ptr; |
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if(alignment == 0) |
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{ |
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if((mem_ptr = (uint8_t *) malloc(size + 1)) != NULL) { |
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*mem_ptr = 0; |
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return (void *) mem_ptr++; |
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} |
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} |
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else |
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{ |
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uint8_t *tmp; |
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if((tmp = (uint8_t *) malloc(size + alignment)) != NULL) { |
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mem_ptr = (uint8_t *)((uint32_t)(tmp + alignment - 1)&(~(uint32_t)(alignment - 1))); |
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*(mem_ptr - 1) = (uint8_t)(mem_ptr - tmp); |
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return (void *) mem_ptr; |
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} |
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} |
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return NULL; |
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} |
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void xvid_free(void *mem_ptr) |
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{ |
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uint8_t *real_ptr; |
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real_ptr = (uint8_t*)mem_ptr; |
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free(real_ptr - *(real_ptr -1)); |
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} |