git.sesse.net Git - casparcg/blob - core/mixer/mixer.cpp

   1 /*\r
   2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 *  This file is part of CasparCG.\r
   5 *\r
   6 *    CasparCG is free software: you can redistribute it and/or modify\r
   7 *    it under the terms of the GNU General Public License as published by\r
   8 *    the Free Software Foundation, either version 3 of the License, or\r
   9 *    (at your option) any later version.\r
  10 *\r
  11 *    CasparCG is distributed in the hope that it will be useful,\r
  12 *    but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 *    GNU General Public License for more details.\r
  15 \r
  16 *    You should have received a copy of the GNU General Public License\r
  17 *    along with CasparCG.  If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 */\r
  20 #include "../StdAfx.h"\r
  21 \r
  22 #include "mixer.h"\r
  23 \r
  24 #include "read_frame.h"\r
  25 #include "write_frame.h"\r
  26 \r
  27 #include "audio/audio_mixer.h"\r
  28 #include "image/image_mixer.h"\r
  29 \r
  30 #include "../video_channel_context.h"\r
  31 \r
  32 #include <common/exception/exceptions.h>\r
  33 #include <common/concurrency/executor.h>\r
  34 #include <common/utility/tweener.h>\r
  35 \r
  36 \r
  37 #include <core/mixer/read_frame.h>\r
  38 #include <core/mixer/write_frame.h>\r
  39 #include <core/producer/frame/basic_frame.h>\r
  40 #include <core/producer/frame/frame_factory.h>\r
  41 #include <core/producer/frame/pixel_format.h>\r
  42 #include <core/producer/frame/audio_transform.h>\r
  43 #include <core/producer/frame/image_transform.h>\r
  44 \r
  45 #include <core/video_format.h>\r
  46 \r
  47 #include <boost/fusion/container/map.hpp>\r
  48 #include <boost/fusion/include/at_key.hpp>\r
  49 \r
  50 #include <unordered_map>\r
  51 \r
  52 namespace caspar { namespace core {\r
  53                 \r
  54 template<typename T>\r
  55 class tweened_transform\r
  56 {\r
  57         T source_;\r
  58         T dest_;\r
  59         int duration_;\r
  60         int time_;\r
  61         tweener_t tweener_;\r
  62 public: \r
  63         tweened_transform()\r
  64                 : duration_(0)\r
  65                 , time_(0)\r
  66                 , tweener_(get_tweener(L"linear")){}\r
  67         tweened_transform(const T& source, const T& dest, int duration, const std::wstring& tween = L"linear")\r
  68                 : source_(source)\r
  69                 , dest_(dest)\r
  70                 , duration_(duration)\r
  71                 , time_(0)\r
  72                 , tweener_(get_tweener(tween)){}\r
  73         \r
  74         T fetch()\r
  75         {\r
  76                 return time_ == duration_ ? dest_ : tween(static_cast<double>(time_), source_, dest_, static_cast<double>(duration_), tweener_);\r
  77         }\r
  78 \r
  79         T fetch_and_tick(int num)\r
  80         {                                               \r
  81                 time_ = std::min(time_+num, duration_);\r
  82                 return fetch();\r
  83         }\r
  84 };\r
  85 \r
  86 struct mixer::implementation : boost::noncopyable\r
  87 {               \r
  88         video_channel_context& channel_;\r
  89         \r
  90         audio_mixer     audio_mixer_;\r
  91         image_mixer image_mixer_;\r
  92         \r
  93         typedef std::unordered_map<int, tweened_transform<core::image_transform>> image_transforms;\r
  94         typedef std::unordered_map<int, tweened_transform<core::audio_transform>> audio_transforms;\r
  95 \r
  96         boost::fusion::map<boost::fusion::pair<core::image_transform, image_transforms>,\r
  97                                         boost::fusion::pair<core::audio_transform, audio_transforms>> transforms_;\r
  98         \r
  99         boost::fusion::map<boost::fusion::pair<core::image_transform, tweened_transform<core::image_transform>>,\r
 100                                         boost::fusion::pair<core::audio_transform, tweened_transform<core::audio_transform>>> root_transforms_;\r
 101 public:\r
 102         implementation(video_channel_context& video_channel) \r
 103                 : channel_(video_channel)\r
 104                 , image_mixer_(channel_)\r
 105         {       \r
 106                 CASPAR_LOG(info) << print() << L" Successfully initialized.";   \r
 107         }\r
 108                         \r
 109         safe_ptr<read_frame> execute(const std::map<int, safe_ptr<core::basic_frame>>& frames)\r
 110         {                       \r
 111                 try\r
 112                 {\r
 113                         auto image = mix_image(frames);\r
 114                         auto audio = mix_audio(frames);\r
 115                         \r
 116                         return make_safe<read_frame>(channel_.ogl(), std::move(image), std::move(audio));\r
 117                 }\r
 118                 catch(...)\r
 119                 {\r
 120                         channel_.ogl().gc().wait();\r
 121                         image_mixer_ = image_mixer(channel_);\r
 122                         audio_mixer_ = audio_mixer();\r
 123                         channel_.ogl().gc().wait();\r
 124 \r
 125                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 126                         return make_safe<read_frame>();\r
 127                 }\r
 128         }\r
 129                         \r
 130         safe_ptr<core::write_frame> create_frame(void* tag, const core::pixel_format_desc& desc)\r
 131         {               \r
 132                 return image_mixer_.create_frame(tag, desc);\r
 133         }\r
 134                         \r
 135         template<typename T>    \r
 136         void set_transform(const T& transform, unsigned int mix_duration, const std::wstring& tween)\r
 137         {\r
 138                 channel_.execution().invoke([&]\r
 139                 {\r
 140                         auto& root = boost::fusion::at_key<T>(root_transforms_);\r
 141 \r
 142                         auto src = root.fetch();\r
 143                         auto dst = transform;\r
 144                         root = tweened_transform<T>(src, dst, mix_duration, tween);\r
 145                 });\r
 146         }\r
 147                 \r
 148         template<typename T>\r
 149         void set_transform(int index, const T& transform, unsigned int mix_duration, const std::wstring& tween)\r
 150         {\r
 151                 channel_.execution().invoke([&]\r
 152                 {\r
 153                         auto& transforms = boost::fusion::at_key<T>(transforms_);\r
 154 \r
 155                         auto src = transforms[index].fetch();\r
 156                         auto dst = transform;\r
 157                         transforms[index] = tweened_transform<T>(src, dst, mix_duration, tween);\r
 158                 });\r
 159         }\r
 160                 \r
 161         template<typename T>\r
 162         void apply_transform(const std::function<T(const T&)>& transform, unsigned int mix_duration, const std::wstring& tween)\r
 163         {\r
 164                 return channel_.execution().invoke([&]\r
 165                 {\r
 166                         auto& root = boost::fusion::at_key<T>(root_transforms_);\r
 167 \r
 168                         auto src = root.fetch();\r
 169                         auto dst = transform(src);\r
 170                         root = tweened_transform<T>(src, dst, mix_duration, tween);\r
 171                 });\r
 172         }\r
 173                 \r
 174         template<typename T>\r
 175         void apply_transform(int index, const std::function<T(T)>& transform, unsigned int mix_duration, const std::wstring& tween)\r
 176         {\r
 177                 channel_.execution().invoke([&]\r
 178                 {\r
 179                         auto& transforms = boost::fusion::at_key<T>(transforms_);\r
 180 \r
 181                         auto src = transforms[index].fetch();\r
 182                         auto dst = transform(src);\r
 183                         transforms[index] = tweened_transform<T>(src, dst, mix_duration, tween);\r
 184                 });\r
 185         }\r
 186                 \r
 187         std::wstring print() const\r
 188         {\r
 189                 return L"mixer";\r
 190         }\r
 191 \r
 192 private:\r
 193                 \r
 194         safe_ptr<host_buffer> mix_image(std::map<int, safe_ptr<core::basic_frame>> frames)\r
 195         {               \r
 196                 auto& root_image_transform = boost::fusion::at_key<core::image_transform>(root_transforms_);\r
 197                 auto& image_transforms = boost::fusion::at_key<core::image_transform>(transforms_);\r
 198                 \r
 199                 BOOST_FOREACH(auto& frame, frames)\r
 200                 {\r
 201                         image_mixer_.begin_layer();\r
 202                         \r
 203                         if(channel_.get_format_desc().mode != core::video_mode::progressive)\r
 204                         {\r
 205                                 auto frame1 = make_safe<core::basic_frame>(frame.second);\r
 206                                 auto frame2 = make_safe<core::basic_frame>(frame.second);\r
 207                                 \r
 208                                 frame1->get_image_transform() = root_image_transform.fetch_and_tick(1)*image_transforms[frame.first].fetch_and_tick(1);\r
 209                                 frame2->get_image_transform() = root_image_transform.fetch_and_tick(1)*image_transforms[frame.first].fetch_and_tick(1);\r
 210 \r
 211                                 if(frame1->get_image_transform() != frame2->get_image_transform())\r
 212                                         core::basic_frame::interlace(frame1, frame2, channel_.get_format_desc().mode)->accept(image_mixer_);\r
 213                                 else\r
 214                                         frame2->accept(image_mixer_);\r
 215                         }\r
 216                         else\r
 217                         {\r
 218                                 auto frame1 = make_safe<core::basic_frame>(frame.second);\r
 219                                 frame1->get_image_transform() = root_image_transform.fetch_and_tick(1)*image_transforms[frame.first].fetch_and_tick(1);\r
 220                                 frame1->accept(image_mixer_);\r
 221                         }\r
 222 \r
 223                         image_mixer_.end_layer();\r
 224                 }\r
 225 \r
 226                 return image_mixer_.render();\r
 227         }\r
 228 \r
 229         std::vector<int16_t> mix_audio(const std::map<int, safe_ptr<core::basic_frame>>& frames)\r
 230         {\r
 231                 auto& root_audio_transform = boost::fusion::at_key<core::audio_transform>(root_transforms_);\r
 232                 auto& audio_transforms = boost::fusion::at_key<core::audio_transform>(transforms_);\r
 233 \r
 234                 BOOST_FOREACH(auto& frame, frames)\r
 235                 {\r
 236                         const unsigned int num = channel_.get_format_desc().mode == core::video_mode::progressive ? 1 : 2;\r
 237 \r
 238                         auto frame1 = make_safe<core::basic_frame>(frame.second);\r
 239                         frame1->get_audio_transform() = root_audio_transform.fetch_and_tick(num)*audio_transforms[frame.first].fetch_and_tick(num);\r
 240                         frame1->accept(audio_mixer_);\r
 241                 }\r
 242 \r
 243                 return audio_mixer_.mix();\r
 244         }\r
 245 };\r
 246         \r
 247 mixer::mixer(video_channel_context& video_channel) : impl_(new implementation(video_channel)){}\r
 248 safe_ptr<core::read_frame> mixer::execute(const std::map<int, safe_ptr<core::basic_frame>>& frames){ return impl_->execute(frames);}\r
 249 core::video_format_desc mixer::get_video_format_desc() const { return impl_->channel_.get_format_desc(); }\r
 250 safe_ptr<core::write_frame> mixer::create_frame(void* tag, const core::pixel_format_desc& desc){ return impl_->create_frame(tag, desc); }               \r
 251 safe_ptr<core::write_frame> mixer::create_frame(void* tag, size_t width, size_t height, core::pixel_format::type pix_fmt)\r
 252 {\r
 253         // Create bgra frame\r
 254         core::pixel_format_desc desc;\r
 255         desc.pix_fmt = pix_fmt;\r
 256         desc.planes.push_back( core::pixel_format_desc::plane(width, height, 4));\r
 257         return create_frame(tag, desc);\r
 258 }\r
 259 void mixer::set_image_transform(const core::image_transform& transform, unsigned int mix_duration, const std::wstring& tween){impl_->set_transform<core::image_transform>(transform, mix_duration, tween);}\r
 260 void mixer::set_image_transform(int index, const core::image_transform& transform, unsigned int mix_duration, const std::wstring& tween){impl_->set_transform<core::image_transform>(index, transform, mix_duration, tween);}\r
 261 void mixer::set_audio_transform(const core::audio_transform& transform, unsigned int mix_duration, const std::wstring& tween){impl_->set_transform<core::audio_transform>(transform, mix_duration, tween);}\r
 262 void mixer::set_audio_transform(int index, const core::audio_transform& transform, unsigned int mix_duration, const std::wstring& tween){impl_->set_transform<core::audio_transform>(index, transform, mix_duration, tween);}\r
 263 void mixer::apply_image_transform(const std::function<core::image_transform(core::image_transform)>& transform, unsigned int mix_duration, const std::wstring& tween){impl_->apply_transform<core::image_transform>(transform, mix_duration, tween);}\r
 264 void mixer::apply_image_transform(int index, const std::function<core::image_transform(core::image_transform)>& transform, unsigned int mix_duration, const std::wstring& tween){impl_->apply_transform<core::image_transform>(index, transform, mix_duration, tween);}\r
 265 void mixer::apply_audio_transform(const std::function<core::audio_transform(core::audio_transform)>& transform, unsigned int mix_duration, const std::wstring& tween){impl_->apply_transform<core::audio_transform>(transform, mix_duration, tween);}\r
 266 void mixer::apply_audio_transform(int index, const std::function<core::audio_transform(core::audio_transform)>& transform, unsigned int mix_duration, const std::wstring& tween){impl_->apply_transform<core::audio_transform>(index, transform, mix_duration, tween);}\r
 267 \r
 268 }}