101 lines
2.8 KiB
C
101 lines
2.8 KiB
C
/*
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* Copyright (c) 2015 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 VPX_DSP_VPX_DSP_COMMON_H_
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#define VPX_DSP_VPX_DSP_COMMON_H_
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#include "./vpx_config.h"
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#include "vpx/vpx_integer.h"
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#include "vpx_ports/mem.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef MAX_SB_SIZE
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# if CONFIG_VP10 && CONFIG_EXT_PARTITION
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# define MAX_SB_SIZE 128
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# else
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# define MAX_SB_SIZE 64
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# endif // CONFIG_VP10 && CONFIG_EXT_PARTITION
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#endif // ndef MAX_SB_SIZE
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#define VPXMIN(x, y) (((x) < (y)) ? (x) : (y))
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#define VPXMAX(x, y) (((x) > (y)) ? (x) : (y))
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#define IMPLIES(a, b) (!(a) || (b)) // Logical 'a implies b' (or 'a -> b')
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#define IS_POWER_OF_TWO(x) (((x) & ((x) - 1)) == 0)
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// These can be used to give a hint about branch outcomes.
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// This can have an effect, even if your target processor has a
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// good branch predictor, as these hints can affect basic block
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// ordering by the compiler.
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#ifdef __GNUC__
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# define LIKELY(v) __builtin_expect(v, 1)
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# define UNLIKELY(v) __builtin_expect(v, 0)
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#else
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# define LIKELY(v) (v)
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# define UNLIKELY(v) (v)
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#endif
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#define VPX_SWAP(type, a, b) \
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do { \
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type c = (b); \
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b = a; \
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a = c; \
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} while (0)
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#if CONFIG_VP9_HIGHBITDEPTH
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// Note:
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// tran_low_t is the datatype used for final transform coefficients.
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// tran_high_t is the datatype used for intermediate transform stages.
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typedef int64_t tran_high_t;
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typedef int32_t tran_low_t;
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#else
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// Note:
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// tran_low_t is the datatype used for final transform coefficients.
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// tran_high_t is the datatype used for intermediate transform stages.
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typedef int32_t tran_high_t;
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typedef int16_t tran_low_t;
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#endif // CONFIG_VP9_HIGHBITDEPTH
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static INLINE uint8_t clip_pixel(int val) {
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return (val > 255) ? 255 : (val < 0) ? 0 : val;
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}
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static INLINE int clamp(int value, int low, int high) {
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return value < low ? low : (value > high ? high : value);
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}
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static INLINE double fclamp(double value, double low, double high) {
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return value < low ? low : (value > high ? high : value);
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}
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#if CONFIG_VP9_HIGHBITDEPTH
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static INLINE uint16_t clip_pixel_highbd(int val, int bd) {
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switch (bd) {
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case 8:
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default:
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return (uint16_t)clamp(val, 0, 255);
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case 10:
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return (uint16_t)clamp(val, 0, 1023);
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case 12:
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return (uint16_t)clamp(val, 0, 4095);
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}
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}
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#endif // CONFIG_VP9_HIGHBITDEPTH
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // VPX_DSP_VPX_DSP_COMMON_H_
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