vpx_dsp/vpx_dsp_common.h

   1 /*
   2  *  Copyright (c) 2015 The WebM project authors. All Rights Reserved.
   3  *
   4  *  Use of this source code is governed by a BSD-style license
   5  *  that can be found in the LICENSE file in the root of the source
   6  *  tree. An additional intellectual property rights grant can be found
   7  *  in the file PATENTS.  All contributing project authors may
   8  *  be found in the AUTHORS file in the root of the source tree.
   9  */
  10
  11 #ifndef VPX_DSP_COMMON_H_
  12 #define VPX_DSP_COMMON_H_
  13
  14 #include "./vpx_config.h"
  15 #include "vpx/vpx_integer.h"
  16 #include "vpx_dsp/vpx_dsp_common.h"
  17 #include "vpx_ports/mem.h"
  18
  19 #ifdef __cplusplus
  20 extern "C" {
  21 #endif
  22
  23 #define VPXMIN(x, y) (((x) < (y)) ? (x) : (y))
  24 #define VPXMAX(x, y) (((x) > (y)) ? (x) : (y))
  25
  26 #if CONFIG_VP9_HIGHBITDEPTH
  27 // Note:
  28 // tran_low_t  is the datatype used for final transform coefficients.
  29 // tran_high_t is the datatype used for intermediate transform stages.
  30 typedef int64_t tran_high_t;
  31 typedef int32_t tran_low_t;
  32 #else
  33 // Note:
  34 // tran_low_t  is the datatype used for final transform coefficients.
  35 // tran_high_t is the datatype used for intermediate transform stages.
  36 typedef int32_t tran_high_t;
  37 typedef int16_t tran_low_t;
  38 #endif  // CONFIG_VP9_HIGHBITDEPTH
  39
  40 static INLINE uint8_t clip_pixel(int val) {
  41   return (val > 255) ? 255 : (val < 0) ? 0 : val;
  42 }
  43
  44 static INLINE int clamp(int value, int low, int high) {
  45   return value < low ? low : (value > high ? high : value);
  46 }
  47
  48 static INLINE double fclamp(double value, double low, double high) {
  49   return value < low ? low : (value > high ? high : value);
  50 }
  51
  52 #if CONFIG_VP9_HIGHBITDEPTH
  53 static INLINE uint16_t clip_pixel_highbd(int val, int bd) {
  54   switch (bd) {
  55     case 8:
  56     default:
  57       return (uint16_t)clamp(val, 0, 255);
  58     case 10:
  59       return (uint16_t)clamp(val, 0, 1023);
  60     case 12:
  61       return (uint16_t)clamp(val, 0, 4095);
  62   }
  63 }
  64 #endif  // CONFIG_VP9_HIGHBITDEPTH
  65
  66 #ifdef __cplusplus
  67 }  // extern "C"
  68 #endif
  69
  70 #endif  // VPX_DSP_COMMON_H_