75 lines
2 KiB
C++
75 lines
2 KiB
C++
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/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VP9_COMMON_VP9_COMMON_H_
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#define VP9_COMMON_VP9_COMMON_H_
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/* Interface header for common constant data structures and lookup tables */
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#include <assert.h>
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#include "./vpx_config.h"
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#include "vpx_dsp/vpx_dsp_common.h"
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#include "vpx_mem/vpx_mem.h"
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#include "vpx/vpx_integer.h"
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#include "vpx_ports/bitops.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Only need this for fixed-size arrays, for structs just assign.
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#define vp9_copy(dest, src) { \
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assert(sizeof(dest) == sizeof(src)); \
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memcpy(dest, src, sizeof(src)); \
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}
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// Use this for variably-sized arrays.
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#define vp9_copy_array(dest, src, n) { \
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assert(sizeof(*dest) == sizeof(*src)); \
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memcpy(dest, src, n * sizeof(*src)); \
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}
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#define vp9_zero(dest) memset(&(dest), 0, sizeof(dest))
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#define vp9_zero_array(dest, n) memset(dest, 0, n * sizeof(*dest))
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static INLINE int get_unsigned_bits(unsigned int num_values) {
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return num_values > 0 ? get_msb(num_values) + 1 : 0;
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}
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#if CONFIG_DEBUG
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#define CHECK_MEM_ERROR(cm, lval, expr) do { \
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lval = (expr); \
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if (!lval) \
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vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
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"Failed to allocate "#lval" at %s:%d", \
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__FILE__, __LINE__); \
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} while (0)
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#else
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#define CHECK_MEM_ERROR(cm, lval, expr) do { \
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lval = (expr); \
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if (!lval) \
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vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
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"Failed to allocate "#lval); \
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} while (0)
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#endif
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#define VP9_SYNC_CODE_0 0x49
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#define VP9_SYNC_CODE_1 0x83
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#define VP9_SYNC_CODE_2 0x42
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#define VP9_FRAME_MARKER 0x2
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VP9_COMMON_VP9_COMMON_H_
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