git.sesse.net Git - casparcg/blob - core/frame/frame_transform.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "../stdafx.h"
  23
  24 #include "frame_transform.h"
  25
  26 #include <boost/range/algorithm/equal.hpp>
  27 #include <boost/range/algorithm/fill.hpp>
  28
  29 namespace caspar { namespace core {
  30
  31 // image_transform
  32
  33 image_transform::image_transform()
  34         : opacity(1.0)
  35         , brightness(1.0)
  36         , contrast(1.0)
  37         , saturation(1.0)
  38         , field_mode(field_mode::progressive)
  39         , is_key(false)
  40         , is_mix(false)
  41         , is_still(false)
  42 {
  43         boost::range::fill(fill_translation, 0.0);
  44         boost::range::fill(fill_scale, 1.0);
  45         boost::range::fill(clip_translation, 0.0);
  46         boost::range::fill(clip_scale, 1.0);
  47 }
  48
  49 image_transform& image_transform::operator*=(const image_transform &other)
  50 {
  51         opacity                                 *= other.opacity;
  52         brightness                              *= other.brightness;
  53         contrast                                *= other.contrast;
  54         saturation                              *= other.saturation;
  55         fill_translation[0]             += other.fill_translation[0]*fill_scale[0];
  56         fill_translation[1]             += other.fill_translation[1]*fill_scale[1];
  57         fill_scale[0]                   *= other.fill_scale[0];
  58         fill_scale[1]                   *= other.fill_scale[1];
  59         clip_translation[0]             += other.clip_translation[0]*clip_scale[0];
  60         clip_translation[1]             += other.clip_translation[1]*clip_scale[1];
  61         clip_scale[0]                   *= other.clip_scale[0];
  62         clip_scale[1]                   *= other.clip_scale[1];
  63         levels.min_input                 = std::max(levels.min_input,  other.levels.min_input);
  64         levels.max_input                 = std::min(levels.max_input,  other.levels.max_input);
  65         levels.min_output                = std::max(levels.min_output, other.levels.min_output);
  66         levels.max_output                = std::min(levels.max_output, other.levels.max_output);
  67         levels.gamma                    *= other.levels.gamma;
  68         field_mode                               = field_mode & other.field_mode;
  69         is_key                                  |= other.is_key;
  70         is_mix                                  |= other.is_mix;
  71         is_still                                |= other.is_still;
  72         return *this;
  73 }
  74
  75 image_transform image_transform::operator*(const image_transform &other) const
  76 {
  77         return image_transform(*this) *= other;
  78 }
  79
  80 image_transform image_transform::tween(double time, const image_transform& source, const image_transform& dest, double duration, const tweener& tween)
  81 {
  82         auto do_tween = [](double time, double source, double dest, double duration, const tweener& tween)
  83         {
  84                 return tween(time, source, dest-source, duration);
  85         };
  86
  87         image_transform result;
  88         result.brightness                       = do_tween(time, source.brightness,                             dest.brightness,                        duration, tween);
  89         result.contrast                         = do_tween(time, source.contrast,                               dest.contrast,                          duration, tween);
  90         result.saturation                       = do_tween(time, source.saturation,                             dest.saturation,                        duration, tween);
  91         result.opacity                          = do_tween(time, source.opacity,                                dest.opacity,                           duration, tween);
  92         result.fill_translation[0]      = do_tween(time, source.fill_translation[0],    dest.fill_translation[0],       duration, tween),
  93         result.fill_translation[1]      = do_tween(time, source.fill_translation[1],    dest.fill_translation[1],       duration, tween);
  94         result.fill_scale[0]            = do_tween(time, source.fill_scale[0],                  dest.fill_scale[0],                     duration, tween),
  95         result.fill_scale[1]            = do_tween(time, source.fill_scale[1],                  dest.fill_scale[1],                     duration, tween);
  96         result.clip_translation[0]      = do_tween(time, source.clip_translation[0],    dest.clip_translation[0],       duration, tween),
  97         result.clip_translation[1]      = do_tween(time, source.clip_translation[1],    dest.clip_translation[1],       duration, tween);
  98         result.clip_scale[0]            = do_tween(time, source.clip_scale[0],                  dest.clip_scale[0],                     duration, tween),
  99         result.clip_scale[1]            = do_tween(time, source.clip_scale[1],                  dest.clip_scale[1],                     duration, tween);
 100         result.levels.max_input         = do_tween(time, source.levels.max_input,               dest.levels.max_input,          duration, tween);
 101         result.levels.min_input         = do_tween(time, source.levels.min_input,               dest.levels.min_input,          duration, tween);
 102         result.levels.max_output        = do_tween(time, source.levels.max_output,              dest.levels.max_output,         duration, tween);
 103         result.levels.min_output        = do_tween(time, source.levels.min_output,              dest.levels.min_output,         duration, tween);
 104         result.levels.gamma                     = do_tween(time, source.levels.gamma,                   dest.levels.gamma,                      duration, tween);
 105         result.field_mode                       = source.field_mode & dest.field_mode;
 106         result.is_key                           = source.is_key | dest.is_key;
 107         result.is_mix                           = source.is_mix | dest.is_mix;
 108         result.is_still                         = source.is_still | dest.is_still;
 109
 110         return result;
 111 }
 112
 113 bool operator==(const image_transform& lhs, const image_transform& rhs)
 114 {
 115         auto eq = [](double lhs, double rhs)
 116         {
 117                 return std::abs(lhs - rhs) < 5e-8;
 118         };
 119
 120         return
 121                 eq(lhs.opacity, rhs.opacity) &&
 122                 eq(lhs.contrast, rhs.contrast) &&
 123                 eq(lhs.brightness, rhs.brightness) &&
 124                 eq(lhs.saturation, rhs.saturation) &&
 125                 boost::range::equal(lhs.fill_translation, rhs.fill_translation, eq) &&
 126                 boost::range::equal(lhs.fill_scale, rhs.fill_scale, eq) &&
 127                 boost::range::equal(lhs.clip_translation, rhs.clip_translation, eq) &&
 128                 boost::range::equal(lhs.clip_scale, rhs.clip_scale, eq) &&
 129                 lhs.field_mode == rhs.field_mode &&
 130                 lhs.is_key == rhs.is_key &&
 131                 lhs.is_mix == rhs.is_mix &&
 132                 lhs.is_still == rhs.is_still;
 133 }
 134
 135 bool operator!=(const image_transform& lhs, const image_transform& rhs)
 136 {
 137         return !(lhs == rhs);
 138 }
 139
 140 // audio_transform
 141
 142 audio_transform::audio_transform()
 143         : volume(1.0)
 144         , is_still(false)
 145 {
 146 }
 147
 148 audio_transform& audio_transform::operator*=(const audio_transform &other)
 149 {
 150         volume   *= other.volume;
 151         is_still |= other.is_still;
 152         return *this;
 153 }
 154
 155 audio_transform audio_transform::operator*(const audio_transform &other) const
 156 {
 157         return audio_transform(*this) *= other;
 158 }
 159
 160 audio_transform audio_transform::tween(double time, const audio_transform& source, const audio_transform& dest, double duration, const tweener& tween)
 161 {
 162         auto do_tween = [](double time, double source, double dest, double duration, const tweener& tween)
 163         {
 164                 return tween(time, source, dest-source, duration);
 165         };
 166
 167         audio_transform result;
 168         result.is_still                 = source.is_still | dest.is_still;
 169         result.volume                   = do_tween(time, source.volume,                         dest.volume,                    duration, tween);
 170
 171         return result;
 172 }
 173
 174 bool operator==(const audio_transform& lhs, const audio_transform& rhs)
 175 {
 176         auto eq = [](double lhs, double rhs)
 177         {
 178                 return std::abs(lhs - rhs) < 5e-8;
 179         };
 180
 181         return eq(lhs.volume, rhs.volume) && lhs.is_still == rhs.is_still;
 182 }
 183
 184 bool operator!=(const audio_transform& lhs, const audio_transform& rhs)
 185 {
 186         return !(lhs == rhs);
 187 }
 188
 189 // frame_transform
 190 frame_transform::frame_transform()
 191 {
 192 }
 193
 194 frame_transform& frame_transform::operator*=(const frame_transform &other)
 195 {
 196         image_transform *= other.image_transform;
 197         audio_transform *= other.audio_transform;
 198         return *this;
 199 }
 200
 201 frame_transform frame_transform::operator*(const frame_transform &other) const
 202 {
 203         return frame_transform(*this) *= other;
 204 }
 205
 206 frame_transform frame_transform::tween(double time, const frame_transform& source, const frame_transform& dest, double duration, const tweener& tween)
 207 {
 208         frame_transform result;
 209         result.image_transform = image_transform::tween(time, source.image_transform, dest.image_transform, duration, tween);
 210         result.audio_transform = audio_transform::tween(time, source.audio_transform, dest.audio_transform, duration, tween);
 211         return result;
 212 }
 213
 214 bool operator==(const frame_transform& lhs, const frame_transform& rhs)
 215 {
 216         return  lhs.image_transform == rhs.image_transform &&
 217                         lhs.audio_transform == rhs.audio_transform;
 218 }
 219
 220 bool operator!=(const frame_transform& lhs, const frame_transform& rhs)
 221 {
 222         return !(lhs == rhs);
 223 }
 224
 225 }}