xref: /aosp_15_r20/external/libvpx/vp8/common/common.h (revision fb1b10ab9aebc7c7068eedab379b749d7e3900be)

/*
 *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef VPX_VP8_COMMON_COMMON_H_
#define VPX_VP8_COMMON_COMMON_H_

#include <assert.h>

/* Interface header for common constant data structures and lookup tables */

#include "vpx_mem/vpx_mem.h"

#ifdef __cplusplus
extern "C" {
#endif

/* Only need this for fixed-size arrays, for structs just assign. */

#define vp8_copy(Dest, Src)              \
  do {                                   \
    assert(sizeof(Dest) == sizeof(Src)); \
    memcpy(Dest, Src, sizeof(Src));      \
  } while (0)

/* Use this for variably-sized arrays. */

#define vp8_copy_array(Dest, Src, N)           \
  do {                                         \
    assert(sizeof(*(Dest)) == sizeof(*(Src))); \
    memcpy(Dest, Src, (N) * sizeof(*(Src)));   \
  } while (0)

#define vp8_zero(Dest) memset(&(Dest), 0, sizeof(Dest))

#define vp8_zero_array(Dest, N) memset(Dest, 0, (N) * sizeof(*(Dest)))

#ifdef __cplusplus
}  // extern "C"
#endif

#endif  // VPX_VP8_COMMON_COMMON_H_