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

   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 #pragma once
  23
  24 #include <common/tweener.h>
  25 #include <common/env.h>
  26
  27 #include <core/video_format.h>
  28 #include <core/mixer/image/blend_modes.h>
  29
  30 #include <boost/array.hpp>
  31 #include <boost/optional.hpp>
  32 #include <boost/property_tree/ptree.hpp>
  33
  34 namespace caspar { namespace core {
  35
  36 struct chroma
  37 {
  38         enum class legacy_type
  39         {
  40                 none,
  41                 green,
  42                 blue
  43         };
  44
  45         bool            enable                          = false;
  46         bool            show_mask                       = false;
  47         double          target_hue                      = 0.0;
  48         double          hue_width                       = 0.0;
  49         double          min_saturation          = 0.0;
  50         double          min_brightness          = 0.0;
  51         double          softness                        = 0.0;
  52         double          spill                           = 1.0;
  53         double          spill_darken            = 0.0;
  54 };
  55
  56 struct levels final
  57 {
  58         double min_input        = 0.0;
  59         double max_input        = 1.0;
  60         double gamma            = 1.0;
  61         double min_output       = 0.0;
  62         double max_output       = 1.0;
  63 };
  64
  65 struct corners final
  66 {
  67         boost::array<double, 2> ul = boost::array<double, 2> { { 0.0, 0.0 } };
  68         boost::array<double, 2> ur = boost::array<double, 2> { { 1.0, 0.0 } };
  69         boost::array<double, 2> lr = boost::array<double, 2> { { 1.0, 1.0 } };
  70         boost::array<double, 2> ll = boost::array<double, 2> { { 0.0, 1.0 } };
  71 };
  72
  73 struct rectangle final
  74 {
  75         boost::array<double, 2> ul = boost::array<double, 2> { { 0.0, 0.0 } };
  76         boost::array<double, 2> lr = boost::array<double, 2> { { 1.0, 1.0 } };
  77 };
  78
  79 struct image_transform final
  80 {
  81         double                                  opacity                         = 1.0;
  82         double                                  contrast                        = 1.0;
  83         double                                  brightness                      = 1.0;
  84         double                                  saturation                      = 1.0;
  85
  86         // A bug in VS 2013 prevents us from writing:
  87         // boost::array<double, 2> fill_translation = { { 0.0, 0.0 } };
  88         // See http://blogs.msdn.com/b/vcblog/archive/2014/08/19/the-future-of-non-static-data-member-initialization.aspx
  89         boost::array<double, 2> anchor                          = boost::array<double, 2> { { 0.0, 0.0 } };
  90         boost::array<double, 2> fill_translation        = boost::array<double, 2> { { 0.0, 0.0 } };
  91         boost::array<double, 2> fill_scale                      = boost::array<double, 2> { { 1.0, 1.0 } };
  92         boost::array<double, 2> clip_translation        = boost::array<double, 2> { { 0.0, 0.0 } };
  93         boost::array<double, 2> clip_scale                      = boost::array<double, 2> { { 1.0, 1.0 } };
  94         double                                  angle                           = 0.0;
  95         rectangle                               crop;
  96         corners                                 perspective;
  97         core::levels                    levels;
  98         core::chroma                    chroma;
  99
 100         core::field_mode                field_mode                      = core::field_mode::progressive;
 101         bool                                    is_key                          = false;
 102         bool                                    is_mix                          = false;
 103         bool                                    is_still                        = false;
 104         bool                                    use_mipmap                      = false;
 105         core::blend_mode                blend_mode                      = core::blend_mode::normal;
 106         int                                             layer_depth                     = 0;
 107
 108         image_transform& operator*=(const image_transform &other);
 109         image_transform operator*(const image_transform &other) const;
 110
 111         static image_transform tween(double time, const image_transform& source, const image_transform& dest, double duration, const tweener& tween);
 112 };
 113
 114 bool operator==(const image_transform& lhs, const image_transform& rhs);
 115 bool operator!=(const image_transform& lhs, const image_transform& rhs);
 116
 117 struct audio_transform final
 118 {
 119         double  volume          = 1.0;
 120         bool    is_still        = false;
 121
 122         audio_transform& operator*=(const audio_transform &other);
 123         audio_transform operator*(const audio_transform &other) const;
 124
 125         static audio_transform tween(double time, const audio_transform& source, const audio_transform& dest, double duration, const tweener& tween);
 126 };
 127
 128 bool operator==(const audio_transform& lhs, const audio_transform& rhs);
 129 bool operator!=(const audio_transform& lhs, const audio_transform& rhs);
 130
 131 //__declspec(align(16))
 132 struct frame_transform final
 133 {
 134 public:
 135         frame_transform();
 136
 137         core::image_transform image_transform;
 138         core::audio_transform audio_transform;
 139
 140         //char padding[(sizeof(core::image_transform) + sizeof(core::audio_transform)) % 16];
 141
 142         frame_transform& operator*=(const frame_transform &other);
 143         frame_transform operator*(const frame_transform &other) const;
 144
 145         static frame_transform tween(double time, const frame_transform& source, const frame_transform& dest, double duration, const tweener& tween);
 146 };
 147
 148 bool operator==(const frame_transform& lhs, const frame_transform& rhs);
 149 bool operator!=(const frame_transform& lhs, const frame_transform& rhs);
 150
 151 class tweened_transform
 152 {
 153         frame_transform source_;
 154         frame_transform dest_;
 155         int duration_;
 156         int time_;
 157         tweener tweener_;
 158 public:
 159         tweened_transform()
 160                 : duration_(0)
 161                 , time_(0)
 162         {
 163                 dest_.image_transform.use_mipmap = env::properties().get(L"configuration.mixer.mipmapping-default-on", false);
 164         }
 165
 166         tweened_transform(const frame_transform& source, const frame_transform& dest, int duration, const tweener& tween)
 167                 : source_(source)
 168                 , dest_(dest)
 169                 , duration_(duration)
 170                 , time_(0)
 171                 , tweener_(tween)
 172         {
 173         }
 174
 175         const frame_transform& dest() const
 176         {
 177                 return dest_;
 178         }
 179
 180         frame_transform fetch()
 181         {
 182                 return time_ == duration_ ? dest_ : frame_transform::tween(static_cast<double>(time_), source_, dest_, static_cast<double>(duration_), tweener_);
 183         }
 184
 185         frame_transform fetch_and_tick(int num)
 186         {
 187                 time_ = std::min(time_+num, duration_);
 188                 return fetch();
 189         }
 190 };
 191
 192 boost::optional<chroma::legacy_type> get_chroma_mode(const std::wstring& str);
 193
 194 namespace detail {
 195
 196 void set_current_aspect_ratio(double aspect_ratio);
 197 double get_current_aspect_ratio();
 198
 199 }}}