1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libvpx/vp9/common/vp9_common.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,94 @@
1.4 +/*
1.5 + * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +
1.14 +#ifndef VP9_COMMON_VP9_COMMON_H_
1.15 +#define VP9_COMMON_VP9_COMMON_H_
1.16 +
1.17 +/* Interface header for common constant data structures and lookup tables */
1.18 +
1.19 +#include <assert.h>
1.20 +
1.21 +#include "./vpx_config.h"
1.22 +#include "vpx_mem/vpx_mem.h"
1.23 +#include "vpx/vpx_integer.h"
1.24 +
1.25 +#define MIN(x, y) (((x) < (y)) ? (x) : (y))
1.26 +#define MAX(x, y) (((x) > (y)) ? (x) : (y))
1.27 +
1.28 +#define ROUND_POWER_OF_TWO(value, n) \
1.29 + (((value) + (1 << ((n) - 1))) >> (n))
1.30 +
1.31 +#define ALIGN_POWER_OF_TWO(value, n) \
1.32 + (((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1))
1.33 +
1.34 +// Only need this for fixed-size arrays, for structs just assign.
1.35 +#define vp9_copy(dest, src) { \
1.36 + assert(sizeof(dest) == sizeof(src)); \
1.37 + vpx_memcpy(dest, src, sizeof(src)); \
1.38 + }
1.39 +
1.40 +// Use this for variably-sized arrays.
1.41 +#define vp9_copy_array(dest, src, n) { \
1.42 + assert(sizeof(*dest) == sizeof(*src)); \
1.43 + vpx_memcpy(dest, src, n * sizeof(*src)); \
1.44 + }
1.45 +
1.46 +#define vp9_zero(dest) vpx_memset(&dest, 0, sizeof(dest))
1.47 +#define vp9_zero_array(dest, n) vpx_memset(dest, 0, n * sizeof(*dest))
1.48 +
1.49 +static INLINE uint8_t clip_pixel(int val) {
1.50 + return (val > 255) ? 255u : (val < 0) ? 0u : val;
1.51 +}
1.52 +
1.53 +static INLINE int clamp(int value, int low, int high) {
1.54 + return value < low ? low : (value > high ? high : value);
1.55 +}
1.56 +
1.57 +static INLINE double fclamp(double value, double low, double high) {
1.58 + return value < low ? low : (value > high ? high : value);
1.59 +}
1.60 +
1.61 +static int get_unsigned_bits(unsigned int num_values) {
1.62 + int cat = 0;
1.63 + if (num_values <= 1)
1.64 + return 0;
1.65 + num_values--;
1.66 + while (num_values > 0) {
1.67 + cat++;
1.68 + num_values >>= 1;
1.69 + }
1.70 + return cat;
1.71 +}
1.72 +
1.73 +#if CONFIG_DEBUG
1.74 +#define CHECK_MEM_ERROR(cm, lval, expr) do { \
1.75 + lval = (expr); \
1.76 + if (!lval) \
1.77 + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
1.78 + "Failed to allocate "#lval" at %s:%d", \
1.79 + __FILE__, __LINE__); \
1.80 + } while (0)
1.81 +#else
1.82 +#define CHECK_MEM_ERROR(cm, lval, expr) do { \
1.83 + lval = (expr); \
1.84 + if (!lval) \
1.85 + vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \
1.86 + "Failed to allocate "#lval); \
1.87 + } while (0)
1.88 +#endif
1.89 +
1.90 +#define VP9_SYNC_CODE_0 0x49
1.91 +#define VP9_SYNC_CODE_1 0x83
1.92 +#define VP9_SYNC_CODE_2 0x42
1.93 +
1.94 +#define VP9_FRAME_MARKER 0x2
1.95 +
1.96 +
1.97 +#endif // VP9_COMMON_VP9_COMMON_H_
