git.sesse.net Git - casparcg/blob - core/producer/scene/scene_producer.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: Helge Norberg, helge.norberg@svt.se
  20 */
  21
  22 #pragma once
  23
  24 #include <common/log.h>
  25
  26 #include "../frame_producer.h"
  27 #include "../../fwd.h"
  28
  29 #include "../binding.h"
  30 #include "../variable.h"
  31
  32 namespace caspar { namespace core { namespace scene {
  33
  34 struct coord
  35 {
  36         binding<double> x;
  37         binding<double> y;
  38 };
  39
  40 struct rect
  41 {
  42         coord upper_left;
  43         coord lower_right;
  44 };
  45
  46 struct corners
  47 {
  48         coord upper_left;
  49         coord upper_right;
  50         coord lower_right;
  51         coord lower_left;
  52 };
  53
  54 struct adjustments
  55 {
  56         binding<double> opacity;
  57
  58         adjustments();
  59 };
  60
  61 struct chroma_key
  62 {
  63         binding<core::chroma::type>     key;
  64         binding<double>                         threshold;
  65         binding<double>                         softness;
  66         binding<double>                         spill;
  67 };
  68
  69 struct layer
  70 {
  71         binding<std::wstring>                                           name;
  72         scene::coord                                                            anchor;
  73         scene::coord                                                            position;
  74         scene::rect                                                                     crop;
  75         scene::corners                                                          perspective;
  76         binding<double>                                                         rotation;
  77         scene::adjustments                                                      adjustments;
  78         binding<spl::shared_ptr<frame_producer>>        producer;
  79         binding<bool>                                                           hidden;
  80         binding<bool>                                                           is_key;
  81         binding<bool>                                                           use_mipmap;
  82         binding<core::blend_mode>                                       blend_mode;
  83         scene::chroma_key                                                       chroma_key;
  84
  85         explicit layer(const std::wstring& name, const spl::shared_ptr<frame_producer>& producer);
  86 };
  87
  88 struct keyframe
  89 {
  90         std::function<void ()>                                                                                          on_start_animate;
  91         std::function<void (int64_t start_frame, int64_t current_frame)>        on_animate_to;
  92         std::function<void ()>                                                                                          on_destination_frame;
  93         int64_t                                                                                                                         destination_frame;
  94 public:
  95         keyframe(int64_t destination_frame)
  96                 : destination_frame(destination_frame)
  97         {
  98         }
  99 };
 100
 101 enum class mark_action
 102 {
 103         start,
 104         stop,
 105         jump_to,
 106         remove
 107 };
 108
 109 mark_action get_mark_action(const std::wstring& name);
 110
 111 class scene_producer : public frame_producer_base
 112 {
 113 public:
 114         scene_producer(std::wstring producer_name, int width, int height, const video_format_desc& format_desc);
 115         ~scene_producer();
 116
 117         draw_frame receive_impl() override;
 118         constraints& pixel_constraints() override;
 119         void on_interaction(const interaction_event::ptr& event) override;
 120         bool collides(double x, double y) const override;
 121         std::wstring print() const override;
 122         std::wstring name() const override;
 123         std::future<std::wstring> call(const std::vector<std::wstring>& params) override;
 124         boost::property_tree::wptree info() const override;
 125         monitor::subject& monitor_output();
 126
 127         layer& create_layer(
 128                         const spl::shared_ptr<frame_producer>& producer, int x, int y, const std::wstring& name);
 129         layer& create_layer(
 130                         const spl::shared_ptr<frame_producer>& producer, const std::wstring& name);
 131         binding<int64_t> frame();
 132         binding<double> speed();
 133
 134         template<typename T> binding<T>& create_variable(
 135                         const std::wstring& name, bool is_public, const std::wstring& expr = L"")
 136         {
 137                 std::shared_ptr<core::variable> var =
 138                                 std::make_shared<core::variable_impl<T>>(expr, is_public);
 139
 140                 store_variable(name, var);
 141
 142                 return var->as<T>();
 143         }
 144
 145         template<typename T>
 146         void add_keyframe(
 147                         binding<T>& to_affect,
 148                         T destination_value,
 149                         int64_t at_frame,
 150                         const std::wstring& easing)
 151         {
 152                 add_keyframe(to_affect, binding<T>(destination_value), at_frame, easing);
 153         }
 154
 155         template<typename T>
 156         void add_keyframe(
 157                         binding<T>& to_affect,
 158                         const binding<T>& destination_value,
 159                         int64_t at_frame,
 160                         const std::wstring& easing)
 161         {
 162                 if (easing.empty())
 163                 {
 164                         add_keyframe(to_affect, destination_value, at_frame);
 165                         return;
 166                 }
 167
 168                 tweener tween(easing);
 169                 keyframe k(at_frame);
 170
 171                 std::shared_ptr<T> start_value(new T);
 172
 173                 k.on_start_animate = [=]() mutable
 174                 {
 175                         *start_value = to_affect.get();
 176                         to_affect.unbind();
 177                 };
 178
 179                 k.on_destination_frame = [=]() mutable
 180                 {
 181                         to_affect.bind(destination_value);
 182                 };
 183
 184                 k.on_animate_to =
 185                                 [=](int64_t start_frame, int64_t current_frame) mutable
 186                                 {
 187                                         auto relative_frame = current_frame - start_frame;
 188                                         auto duration = at_frame - start_frame;
 189                                         auto tweened = static_cast<T>(tween(
 190                                                         static_cast<double>(relative_frame),
 191                                                         *start_value,
 192                                                         destination_value.get() - *start_value,
 193                                                         static_cast<double>(duration)));
 194
 195                                         to_affect.set(tweened);
 196
 197                                         //CASPAR_LOG(info) << relative_frame << L" " << *start_value << L" " << duration << L" " << tweened;
 198                                 };
 199
 200                 store_keyframe(to_affect.identity(), k);
 201         }
 202
 203         template<typename T>
 204         void add_keyframe(binding<T>& to_affect, T set_value, int64_t at_frame)
 205         {
 206                 add_keyframe(to_affect, binding<T>(set_value), at_frame);
 207         }
 208
 209         template<typename T>
 210         void add_keyframe(binding<T>& to_affect, const binding<T>& set_value, int64_t at_frame)
 211         {
 212                 keyframe k(at_frame);
 213
 214                 k.on_destination_frame = [=]() mutable
 215                 {
 216                         to_affect.bind(set_value);
 217                 };
 218
 219                 store_keyframe(to_affect.identity(), k);
 220         }
 221
 222         void add_mark(int64_t frame, mark_action action, const std::wstring& label);
 223
 224         core::variable& get_variable(const std::wstring& name) override;
 225         const std::vector<std::wstring>& get_variables() const override;
 226 private:
 227         void store_keyframe(void* timeline_identity, const keyframe& k);
 228         void store_variable(
 229                         const std::wstring& name, const std::shared_ptr<core::variable>& var);
 230
 231         struct impl;
 232         std::unique_ptr<impl> impl_;
 233 };
 234
 235 }}}