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 #include "../StdAfx.h"\r
  21 \r
  22 #ifdef _MSC_VER\r
  23 #pragma warning (disable : 4244)\r
  24 #endif\r
  25 \r
  26 #include "output.h"\r
  27 \r
  28 #include "../video_channel_context.h"\r
  29 \r
  30 #include "../video_format.h"\r
  31 #include "../mixer/gpu/ogl_device.h"\r
  32 #include "../mixer/read_frame.h"\r
  33 \r
  34 #include <common/concurrency/executor.h>\r
  35 #include <common/utility/assert.h>\r
  36 #include <common/utility/timer.h>\r
  37 #include <common/memory/memshfl.h>\r
  38 \r
  39 #include <boost/circular_buffer.hpp>\r
  40 \r
  41 namespace caspar { namespace core {\r
  42         \r
  43 struct output::implementation\r
  44 {       \r
  45         typedef std::pair<safe_ptr<const read_frame>, safe_ptr<const read_frame>> fill_and_key;\r
  46         \r
  47         video_channel_context& channel_;\r
  48 \r
  49         std::map<int, safe_ptr<frame_consumer>> consumers_;\r
  50         typedef std::map<int, safe_ptr<frame_consumer>>::value_type layer_t;\r
  51         \r
  52         high_prec_timer timer_;\r
  53                 \r
  54 public:\r
  55         implementation(video_channel_context& video_channel) \r
  56                 : channel_(video_channel)\r
  57         {               \r
  58         }\r
  59 \r
  60         std::pair<size_t, size_t> buffer_depth()\r
  61         {               \r
  62                 auto depth_comp = [](const layer_t& lhs, const layer_t& rhs){ return lhs.second->buffer_depth() < rhs.second->buffer_depth(); };\r
  63                 auto min = std::min_element(consumers_.begin(), consumers_.end(), depth_comp)->second->buffer_depth();\r
  64                 auto max = std::max_element(consumers_.begin(), consumers_.end(), depth_comp)->second->buffer_depth();\r
  65                 CASPAR_ASSERT(max >= min);\r
  66                 return std::make_pair(min, max);\r
  67         }\r
  68 \r
  69         void add(int index, safe_ptr<frame_consumer>&& consumer)\r
  70         {               \r
  71                 consumer->initialize(channel_.get_format_desc());\r
  72                 channel_.execution().invoke([&]\r
  73                 {\r
  74                         this->remove(index);\r
  75                         consumers_.insert(std::make_pair(index, consumer));\r
  76 \r
  77                         CASPAR_LOG(info) << print() << L" " << consumer->print() << L" Added.";\r
  78                 });\r
  79         }\r
  80 \r
  81         void remove(int index)\r
  82         {\r
  83                 channel_.execution().invoke([&]\r
  84                 {\r
  85                         auto it = consumers_.find(index);\r
  86                         if(it != consumers_.end())\r
  87                         {\r
  88                                 CASPAR_LOG(info) << print() << L" " << it->second->print() << L" Removed.";\r
  89                                 consumers_.erase(it);\r
  90                         }\r
  91                 });\r
  92         }\r
  93                                                 \r
  94         void execute(const safe_ptr<read_frame>& frame)\r
  95         {               \r
  96                 try\r
  97                 {               \r
  98                         if(!has_synchronization_clock())\r
  99                                 timer_.tick(1.0/channel_.get_format_desc().fps);\r
 100                                                 \r
 101                         auto fill = frame;\r
 102                         auto key = get_key_frame(frame);\r
 103 \r
 104                         auto it = consumers_.begin();\r
 105                         while(it != consumers_.end())\r
 106                         {\r
 107                                 try\r
 108                                 {\r
 109                                         auto consumer = it->second;\r
 110 \r
 111                                         if(consumer->get_video_format_desc() != channel_.get_format_desc())\r
 112                                                 consumer->initialize(channel_.get_format_desc());\r
 113 \r
 114                                         auto frame = consumer->key_only() ? key : fill;\r
 115 \r
 116                                         if(static_cast<size_t>(frame->image_data().size()) == consumer->get_video_format_desc().size)\r
 117                                                 consumer->send(frame);\r
 118 \r
 119                                         ++it;\r
 120                                 }\r
 121                                 catch(...)\r
 122                                 {\r
 123                                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 124                                         consumers_.erase(it++);\r
 125                                         CASPAR_LOG(error) << print() << L" " << it->second->print() << L" Removed.";\r
 126                                 }\r
 127                         }\r
 128                 }\r
 129                 catch(...)\r
 130                 {\r
 131                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 132                 }\r
 133         }\r
 134 \r
 135 private:\r
 136         \r
 137         bool has_synchronization_clock()\r
 138         {\r
 139                 return std::any_of(consumers_.begin(), consumers_.end(), [](const decltype(*consumers_.begin())& p)\r
 140                 {\r
 141                         return p.second->has_synchronization_clock();\r
 142                 });\r
 143         }\r
 144 \r
 145         safe_ptr<const read_frame> get_key_frame(const safe_ptr<const read_frame>& frame)\r
 146         {\r
 147                 bool has_key_only = std::any_of(consumers_.begin(), consumers_.end(), [](const decltype(*consumers_.begin())& p)\r
 148                 {\r
 149                         return p.second->key_only();\r
 150                 });\r
 151 \r
 152                 if(has_key_only)\r
 153                 {\r
 154                         // Currently do key_only transform on cpu. Unsure if the extra 400MB/s (1080p50) overhead is worth it to do it on gpu.\r
 155                         auto key_data = channel_.ogl().create_host_buffer(frame->image_data().size(), host_buffer::write_only);                         \r
 156                         fast_memsfhl(key_data->data(), frame->image_data().begin(), frame->image_data().size(), 0x0F0F0F0F, 0x0B0B0B0B, 0x07070707, 0x03030303);\r
 157                         std::vector<int16_t> audio_data(frame->audio_data().begin(), frame->audio_data().end());\r
 158                         return make_safe<read_frame>(std::move(key_data), std::move(audio_data));\r
 159                 }\r
 160                 \r
 161                 return make_safe<read_frame>();\r
 162         }\r
 163         \r
 164 \r
 165         std::wstring print() const\r
 166         {\r
 167                 return L"output";\r
 168         }\r
 169 };\r
 170 \r
 171 output::output(video_channel_context& video_channel) \r
 172         : impl_(new implementation(video_channel)){}\r
 173 void output::add(int index, safe_ptr<frame_consumer>&& consumer){impl_->add(index, std::move(consumer));}\r
 174 void output::remove(int index){impl_->remove(index);}\r
 175 void output::execute(const safe_ptr<read_frame>& frame) {impl_->execute(frame); }\r
 176 }}