git.sesse.net Git - casparcg/blob - core/consumer/output.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 // TODO: Try to recover consumer from bad_alloc...\r
  21 #include "../StdAfx.h"\r
  22 \r
  23 #ifdef _MSC_VER\r
  24 #pragma warning (disable : 4244)\r
  25 #endif\r
  26 \r
  27 #include "output.h"\r
  28 \r
  29 #include "../video_channel_context.h"\r
  30 \r
  31 #include "../video_format.h"\r
  32 #include "../mixer/gpu/ogl_device.h"\r
  33 #include "../mixer/read_frame.h"\r
  34 \r
  35 #include <common/concurrency/executor.h>\r
  36 #include <common/utility/assert.h>\r
  37 #include <common/utility/timer.h>\r
  38 #include <common/memory/memshfl.h>\r
  39 \r
  40 #include <tbb/mutex.h>\r
  41 \r
  42 namespace caspar { namespace core {\r
  43 \r
  44 class deferred_key_read_Frame : public core::read_frame\r
  45 {\r
  46         ogl_device&                                              ogl_;\r
  47         safe_ptr<read_frame>                     fill_;\r
  48         std::shared_ptr<host_buffer>     key_;\r
  49         tbb::mutex                                           mutex_;\r
  50 public:\r
  51         deferred_key_read_Frame(ogl_device& ogl, const safe_ptr<read_frame>& fill)\r
  52                 : ogl_(ogl)\r
  53                 , fill_(fill)\r
  54         {\r
  55         }\r
  56 \r
  57         virtual const boost::iterator_range<const uint8_t*> image_data()\r
  58         {\r
  59                 tbb::mutex::scoped_lock lock(mutex_);\r
  60                 if(!key_)\r
  61                 {\r
  62                         key_ = ogl_.create_host_buffer(fill_->image_data().size(), host_buffer::write_only);                            \r
  63                         fast_memsfhl(key_->data(), fill_->image_data().begin(), fill_->image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);\r
  64                 }\r
  65 \r
  66                 auto ptr = static_cast<const uint8_t*>(key_->data());\r
  67                 return boost::iterator_range<const uint8_t*>(ptr, ptr + key_->size());\r
  68         }\r
  69 \r
  70         virtual const boost::iterator_range<const int16_t*> audio_data()\r
  71         {\r
  72                 return fill_->audio_data();\r
  73         }       \r
  74 };\r
  75         \r
  76 struct output::implementation\r
  77 {       \r
  78         typedef std::pair<safe_ptr<read_frame>, safe_ptr<read_frame>> fill_and_key;\r
  79         \r
  80         video_channel_context& channel_;\r
  81 \r
  82         std::map<int, safe_ptr<frame_consumer>> consumers_;\r
  83         typedef std::map<int, safe_ptr<frame_consumer>>::value_type layer_t;\r
  84         \r
  85         high_prec_timer timer_;\r
  86                 \r
  87 public:\r
  88         implementation(video_channel_context& video_channel) \r
  89                 : channel_(video_channel){}     \r
  90         \r
  91         void add(int index, safe_ptr<frame_consumer>&& consumer)\r
  92         {               \r
  93                 channel_.execution().invoke([&]\r
  94                 {\r
  95                         consumers_.erase(index);\r
  96                 });\r
  97 \r
  98                 consumer->initialize(channel_.get_format_desc());\r
  99 \r
 100                 channel_.execution().invoke([&]\r
 101                 {\r
 102                         consumers_.insert(std::make_pair(index, consumer));\r
 103 \r
 104                         CASPAR_LOG(info) << print() << L" " << consumer->print() << L" Added.";\r
 105                 });\r
 106         }\r
 107 \r
 108         void remove(int index)\r
 109         {\r
 110                 channel_.execution().invoke([&]\r
 111                 {\r
 112                         auto it = consumers_.find(index);\r
 113                         if(it != consumers_.end())\r
 114                         {\r
 115                                 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";\r
 116                                 consumers_.erase(it);\r
 117                         }\r
 118                 });\r
 119         }\r
 120                                                 \r
 121         void execute(const safe_ptr<read_frame>& frame)\r
 122         {                       \r
 123                 if(!has_synchronization_clock())\r
 124                         timer_.tick(1.0/channel_.get_format_desc().fps);\r
 125 \r
 126                 if(frame->image_size() != channel_.get_format_desc().size)\r
 127                 {\r
 128                         timer_.tick(1.0/channel_.get_format_desc().fps);\r
 129                         return;\r
 130                 }\r
 131 \r
 132                 auto fill = frame;\r
 133                 auto key = make_safe<deferred_key_read_Frame>(channel_.ogl(), frame);\r
 134 \r
 135                 auto it = consumers_.begin();\r
 136                 while(it != consumers_.end())\r
 137                 {\r
 138                         auto consumer = it->second;\r
 139 \r
 140                         if(consumer->get_video_format_desc() != channel_.get_format_desc())\r
 141                                 consumer->initialize(channel_.get_format_desc());\r
 142 \r
 143                         if(consumer->send(consumer->key_only() ? key : fill))\r
 144                                 ++it;\r
 145                         else\r
 146                                 consumers_.erase(it++);\r
 147                 }\r
 148         }\r
 149 \r
 150 private:\r
 151         \r
 152         bool has_synchronization_clock()\r
 153         {\r
 154                 return std::any_of(consumers_.begin(), consumers_.end(), [](const decltype(*consumers_.begin())& p)\r
 155                 {\r
 156                         return p.second->has_synchronization_clock();\r
 157                 });\r
 158         }\r
 159         \r
 160         std::wstring print() const\r
 161         {\r
 162                 return L"output";\r
 163         }\r
 164 };\r
 165 \r
 166 output::output(video_channel_context& video_channel) : impl_(new implementation(video_channel)){}\r
 167 void output::add(int index, safe_ptr<frame_consumer>&& consumer){impl_->add(index, std::move(consumer));}\r
 168 void output::remove(int index){impl_->remove(index);}\r
 169 void output::execute(const safe_ptr<read_frame>& frame) {impl_->execute(frame); }\r
 170 }}