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#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;
}
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