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