media/libvpx/vp9/common/vp9_common.h@6474c204b198 (annotated)
media/libvpx/vp9/common/vp9_common.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* |
| michael@0 | 2 | * Copyright (c) 2010 The WebM project authors. All Rights Reserved. |
| michael@0 | 3 | * |
| michael@0 | 4 | * Use of this source code is governed by a BSD-style license |
| michael@0 | 5 | * that can be found in the LICENSE file in the root of the source |
| michael@0 | 6 | * tree. An additional intellectual property rights grant can be found |
| michael@0 | 7 | * in the file PATENTS. All contributing project authors may |
| michael@0 | 8 | * be found in the AUTHORS file in the root of the source tree. |
| michael@0 | 9 | */ |
| michael@0 | 10 | |
| michael@0 | 11 | #ifndef VP9_COMMON_VP9_COMMON_H_ |
| michael@0 | 12 | #define VP9_COMMON_VP9_COMMON_H_ |
| michael@0 | 13 | |
| michael@0 | 14 | /* Interface header for common constant data structures and lookup tables */ |
| michael@0 | 15 | |
| michael@0 | 16 | #include <assert.h> |
| michael@0 | 17 | |
| michael@0 | 18 | #include "./vpx_config.h" |
| michael@0 | 19 | #include "vpx_mem/vpx_mem.h" |
| michael@0 | 20 | #include "vpx/vpx_integer.h" |
| michael@0 | 21 | |
| michael@0 | 22 | #define MIN(x, y) (((x) < (y)) ? (x) : (y)) |
| michael@0 | 23 | #define MAX(x, y) (((x) > (y)) ? (x) : (y)) |
| michael@0 | 24 | |
| michael@0 | 25 | #define ROUND_POWER_OF_TWO(value, n) \ |
| michael@0 | 26 | (((value) + (1 << ((n) - 1))) >> (n)) |
| michael@0 | 27 | |
| michael@0 | 28 | #define ALIGN_POWER_OF_TWO(value, n) \ |
| michael@0 | 29 | (((value) + ((1 << (n)) - 1)) & ~((1 << (n)) - 1)) |
| michael@0 | 30 | |
| michael@0 | 31 | // Only need this for fixed-size arrays, for structs just assign. |
| michael@0 | 32 | #define vp9_copy(dest, src) { \ |
| michael@0 | 33 | assert(sizeof(dest) == sizeof(src)); \ |
| michael@0 | 34 | vpx_memcpy(dest, src, sizeof(src)); \ |
| michael@0 | 35 | } |
| michael@0 | 36 | |
| michael@0 | 37 | // Use this for variably-sized arrays. |
| michael@0 | 38 | #define vp9_copy_array(dest, src, n) { \ |
| michael@0 | 39 | assert(sizeof(*dest) == sizeof(*src)); \ |
| michael@0 | 40 | vpx_memcpy(dest, src, n * sizeof(*src)); \ |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | #define vp9_zero(dest) vpx_memset(&dest, 0, sizeof(dest)) |
| michael@0 | 44 | #define vp9_zero_array(dest, n) vpx_memset(dest, 0, n * sizeof(*dest)) |
| michael@0 | 45 | |
| michael@0 | 46 | static INLINE uint8_t clip_pixel(int val) { |
| michael@0 | 47 | return (val > 255) ? 255u : (val < 0) ? 0u : val; |
| michael@0 | 48 | } |
| michael@0 | 49 | |
| michael@0 | 50 | static INLINE int clamp(int value, int low, int high) { |
| michael@0 | 51 | return value < low ? low : (value > high ? high : value); |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | static INLINE double fclamp(double value, double low, double high) { |
| michael@0 | 55 | return value < low ? low : (value > high ? high : value); |
| michael@0 | 56 | } |
| michael@0 | 57 | |
| michael@0 | 58 | static int get_unsigned_bits(unsigned int num_values) { |
| michael@0 | 59 | int cat = 0; |
| michael@0 | 60 | if (num_values <= 1) |
| michael@0 | 61 | return 0; |
| michael@0 | 62 | num_values--; |
| michael@0 | 63 | while (num_values > 0) { |
| michael@0 | 64 | cat++; |
| michael@0 | 65 | num_values >>= 1; |
| michael@0 | 66 | } |
| michael@0 | 67 | return cat; |
| michael@0 | 68 | } |
| michael@0 | 69 | |
| michael@0 | 70 | #if CONFIG_DEBUG |
| michael@0 | 71 | #define CHECK_MEM_ERROR(cm, lval, expr) do { \ |
| michael@0 | 72 | lval = (expr); \ |
| michael@0 | 73 | if (!lval) \ |
| michael@0 | 74 | vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \ |
| michael@0 | 75 | "Failed to allocate "#lval" at %s:%d", \ |
| michael@0 | 76 | __FILE__, __LINE__); \ |
| michael@0 | 77 | } while (0) |
| michael@0 | 78 | #else |
| michael@0 | 79 | #define CHECK_MEM_ERROR(cm, lval, expr) do { \ |
| michael@0 | 80 | lval = (expr); \ |
| michael@0 | 81 | if (!lval) \ |
| michael@0 | 82 | vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR, \ |
| michael@0 | 83 | "Failed to allocate "#lval); \ |
| michael@0 | 84 | } while (0) |
| michael@0 | 85 | #endif |
| michael@0 | 86 | |
| michael@0 | 87 | #define VP9_SYNC_CODE_0 0x49 |
| michael@0 | 88 | #define VP9_SYNC_CODE_1 0x83 |
| michael@0 | 89 | #define VP9_SYNC_CODE_2 0x42 |
| michael@0 | 90 | |
| michael@0 | 91 | #define VP9_FRAME_MARKER 0x2 |
| michael@0 | 92 | |
| michael@0 | 93 | |
| michael@0 | 94 | #endif // VP9_COMMON_VP9_COMMON_H_ |
