72 lines
1.2 KiB
C
72 lines
1.2 KiB
C
|
#include <os_types.h>
|
||
|
|
|
||
|
|
static unsigned char *mallocbuf;
|
||
|
|
static long bufsize, tmp_ptr, mem_ptr;
|
||
|
|
|
||
|
|
void ogg_malloc_init(void)
|
||
|
|
{
|
||
|
|
mallocbuf = (unsigned char *)ci->get_codec_memory((size_t *)&bufsize);
|
||
|
|
tmp_ptr = bufsize & ~3;
|
||
|
|
mem_ptr = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *ogg_malloc(size_t size)
|
||
|
|
{
|
||
|
|
void* x;
|
||
|
|
|
||
|
|
if (mem_ptr + (long)size > tmp_ptr)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
x = &mallocbuf[mem_ptr];
|
||
|
|
mem_ptr += (size + 3) & ~3; /* Keep memory 32-bit aligned */
|
||
|
|
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *ogg_tmpmalloc(size_t size)
|
||
|
|
{
|
||
|
|
if (mem_ptr + (long)size > tmp_ptr)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
tmp_ptr -= (size + 3) & ~3;
|
||
|
|
return &mallocbuf[tmp_ptr];
|
||
|
|
}
|
||
|
|
|
||
|
|
void *ogg_calloc(size_t nmemb, size_t size)
|
||
|
|
{
|
||
|
|
void *x;
|
||
|
|
x = ogg_malloc(nmemb * size);
|
||
|
|
if (x == NULL)
|
||
|
|
return NULL;
|
||
|
|
ci->memset(x, 0, nmemb * size);
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *ogg_tmpcalloc(size_t nmemb, size_t size)
|
||
|
|
{
|
||
|
|
void *x;
|
||
|
|
x = ogg_tmpmalloc(nmemb * size);
|
||
|
|
if (x == NULL)
|
||
|
|
return NULL;
|
||
|
|
ci->memset(x, 0, nmemb * size);
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
void *ogg_realloc(void *ptr, size_t size)
|
||
|
|
{
|
||
|
|
void *x;
|
||
|
|
(void)ptr;
|
||
|
|
x = ogg_malloc(size);
|
||
|
|
return x;
|
||
|
|
}
|
||
|
|
|
||
|
|
long ogg_tmpmalloc_pos(void)
|
||
|
|
{
|
||
|
|
return tmp_ptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ogg_tmpmalloc_free(long pos)
|
||
|
|
{
|
||
|
|
tmp_ptr = pos;
|
||
|
|
}
|