git.sesse.net Git - casparcg/blob - core/video_channel.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 \r
  21 #include "StdAfx.h"\r
  22 \r
  23 #include "video_channel.h"\r
  24 \r
  25 #include "video_channel_context.h"\r
  26 \r
  27 #include "video_format.h"\r
  28 #include "producer/layer.h"\r
  29 \r
  30 #include <common/concurrency/executor.h>\r
  31 \r
  32 #include <boost/range/algorithm_ext/erase.hpp>\r
  33 \r
  34 #ifdef _MSC_VER\r
  35 #pragma warning(disable : 4355)\r
  36 #endif\r
  37 \r
  38 namespace caspar { namespace core {\r
  39 \r
  40 struct video_channel::implementation : boost::noncopyable\r
  41 {\r
  42         video_channel_context                                   context_;\r
  43 \r
  44         safe_ptr<frame_consumer_device> consumer_;\r
  45         safe_ptr<frame_mixer_device>    mixer_;\r
  46         safe_ptr<frame_producer_device> producer_;\r
  47         \r
  48 public:\r
  49         implementation(int index, const video_format_desc& format_desc, ogl_device& ogl)  \r
  50                 : context_(index, ogl, format_desc)\r
  51                 , consumer_(new frame_consumer_device(context_))\r
  52                 , mixer_(new frame_mixer_device(context_))\r
  53                 , producer_(new frame_producer_device(context_))        \r
  54         {\r
  55                 CASPAR_LOG(info) << print() << " Successfully Initialized.";\r
  56                 context_.execution().begin_invoke([this]{tick();});\r
  57         }\r
  58 \r
  59         ~implementation()\r
  60         {\r
  61                 // Stop context before destroying devices.\r
  62                 context_.execution().stop();\r
  63                 context_.execution().join();\r
  64                 context_.destruction().stop();\r
  65                 context_.destruction().join();\r
  66         }\r
  67 \r
  68         void tick()\r
  69         {\r
  70                 auto simple_frames = (*producer_)();\r
  71                 auto finished_frame = (*mixer_)(simple_frames);\r
  72                 (*consumer_)(finished_frame);\r
  73 \r
  74                 context_.execution().begin_invoke([this]{tick();});\r
  75         }\r
  76                 \r
  77         std::wstring print() const\r
  78         {\r
  79                 return context_.print();\r
  80         }\r
  81 \r
  82         void set_video_format_desc(const video_format_desc& format_desc)\r
  83         {\r
  84                 context_.execution().begin_invoke([=]\r
  85                 {\r
  86                         context_.set_format_desc(format_desc);\r
  87                 });\r
  88         }\r
  89 };\r
  90 \r
  91 video_channel::video_channel(int index, const video_format_desc& format_desc, ogl_device& ogl) : impl_(new implementation(index, format_desc, ogl)){}\r
  92 video_channel::video_channel(video_channel&& other) : impl_(std::move(other.impl_)){}\r
  93 safe_ptr<frame_producer_device> video_channel::producer() { return impl_->producer_;} \r
  94 safe_ptr<frame_mixer_device> video_channel::mixer() { return impl_->mixer_;} \r
  95 safe_ptr<frame_consumer_device> video_channel::consumer() { return impl_->consumer_;} \r
  96 video_format_desc video_channel::get_video_format_desc() const{return impl_->context_.get_format_desc();}\r
  97 void video_channel::set_video_format_desc(const video_format_desc& format_desc){impl_->set_video_format_desc(format_desc);}\r
  98 std::wstring video_channel::print() const { return impl_->print();}\r
  99 \r
 100 }}