zlib_uefi.c

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#include "zutil.h"
 
#include <Library/MemoryAllocationLib.h>
#include <Library/OcCompressionLib.h>
 
voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
    voidpf opaque;
    unsigned items;
    unsigned size;
{
  (void) opaque;
  return (voidpf) AllocatePool (items * size);
}
 
void ZLIB_INTERNAL zcfree (opaque, ptr)
    voidpf opaque;
    voidpf ptr;
{
  (void) opaque;
  FreePool (ptr);
}
 
UINT8 *
CompressZLIB (
  OUT UINT8        *Dst,
  IN  UINT32       DstLen,
  IN  CONST UINT8  *Src,
  IN  UINT32       SrcLen
  )
{
  uLongf  ResultingLen = DstLen;
 
  if (SrcLen > OC_COMPRESSION_MAX_LENGTH || DstLen > OC_COMPRESSION_MAX_LENGTH) {
    return 0;
  }
 
  if (compress (Dst, &ResultingLen, Src, SrcLen) == Z_OK) {
    return Dst + ResultingLen;
  }
 
  return NULL;
}
 
UINTN
DecompressZLIB (
  OUT UINT8        *Dst,
  IN  UINTN        DstLen,
  IN  CONST UINT8  *Src,
  IN  UINTN        SrcLen
  )
{
  uLongf  ResultingLen = DstLen;
 
  if (SrcLen > OC_COMPRESSION_MAX_LENGTH || DstLen > OC_COMPRESSION_MAX_LENGTH) {
    return 0;
  }
 
  if (uncompress (Dst, &ResultingLen, Src, SrcLen) == Z_OK) {
    return ResultingLen;
  }
 
  return 0;
}
 
UINT32
Adler32 (
  IN CONST UINT8  *Buffer,
  IN UINT32       BufferLen
  )
{
  return adler32 (1, Buffer, BufferLen);
}