ref: 6c4007be1c7b663db1717a0768b8299517b6708d
dir: /vp9/common/vp9_common.h/
/*
* 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 VP9_COMMON_VP9_COMMON_H_
#define VP9_COMMON_VP9_COMMON_H_
/* Interface header for common constant data structures and lookup tables */
#include <assert.h>
#include "./vpx_config.h"
#include "vpx_dsp/vpx_dsp_common.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx/vpx_integer.h"
#include "vpx_ports/bitops.h"
#ifdef __cplusplus
extern "C" {
#endif
// Only need this for fixed-size arrays, for structs just assign.
#define vp9_copy(dest, src) { \
assert(sizeof(dest) == sizeof(src)); \
memcpy(dest, src, sizeof(src)); \
}
// Use this for variably-sized arrays.
#define vp9_copy_array(dest, src, n) { \
assert(sizeof(*dest) == sizeof(*src)); \
memcpy(dest, src, n * sizeof(*src)); \
}
#define vp9_zero(dest) memset(&(dest), 0, sizeof(dest))
#define vp9_zero_array(dest, n) memset(dest, 0, n * sizeof(*dest))
static INLINE int get_unsigned_bits(unsigned int num_values) {
return num_values > 0 ? get_msb(num_values) + 1 : 0;
}
#if CONFIG_DEBUG
#define CHECK_MEM_ERROR(cm, lval, expr) do { \
lval = (expr); \
if (!lval) \
vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
"Failed to allocate "#lval" at %s:%d", \
__FILE__, __LINE__); \
} while (0)
#else
#define CHECK_MEM_ERROR(cm, lval, expr) do { \
lval = (expr); \
if (!lval) \
vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
"Failed to allocate "#lval); \
} while (0)
#endif
#define VP9_SYNC_CODE_0 0x49
#define VP9_SYNC_CODE_1 0x83
#define VP9_SYNC_CODE_2 0x42
#define VP9_FRAME_MARKER 0x2
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VP9_COMMON_VP9_COMMON_H_