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

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\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 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../StdAfx.h"\r
  23 \r
  24 #include "mixer.h"\r
  25 \r
  26 #include "../frame/data_frame.h"\r
  27 \r
  28 #include "audio/audio_mixer.h"\r
  29 #include "image/image_mixer.h"\r
  30 \r
  31 #include "gpu/image/image_mixer.h"\r
  32 #include "gpu/accelerator.h"\r
  33 #include "gpu/write_frame.h"\r
  34 \r
  35 #include <common/env.h>\r
  36 #include <common/concurrency/executor.h>\r
  37 #include <common/diagnostics/graph.h>\r
  38 #include <common/except.h>\r
  39 #include <common/gl/gl_check.h>\r
  40 \r
  41 #include <core/frame/draw_frame.h>\r
  42 #include <core/frame/frame_factory.h>\r
  43 #include <core/frame/frame_transform.h>\r
  44 #include <core/frame/pixel_format.h>\r
  45 #include <core/video_format.h>\r
  46 \r
  47 #include <boost/foreach.hpp>\r
  48 #include <boost/timer.hpp>\r
  49 #include <boost/property_tree/ptree.hpp>\r
  50 #include <boost/range/algorithm_ext.hpp>\r
  51 \r
  52 #include <tbb/concurrent_queue.h>\r
  53 #include <tbb/spin_mutex.h>\r
  54 \r
  55 #include <unordered_map>\r
  56 #include <vector>\r
  57 \r
  58 namespace caspar { namespace core {\r
  59 \r
  60 struct mixed_frame : public data_frame\r
  61 {\r
  62         mutable boost::unique_future<boost::iterator_range<const uint8_t*>>     image_data_;\r
  63         const audio_buffer                                                                                                      audio_data_;\r
  64         const video_format_desc                                                                                         video_desc_;\r
  65         pixel_format_desc                                                                                                       pixel_desc_;\r
  66         const void*                                                                                                                     tag_;\r
  67 \r
  68 public:\r
  69         mixed_frame(const void* tag, boost::unique_future<boost::iterator_range<const uint8_t*>>&& image_data, audio_buffer&& audio_data, const video_format_desc& format_desc) \r
  70                 : tag_(tag)\r
  71                 , image_data_(std::move(image_data))\r
  72                 , audio_data_(std::move(audio_data))\r
  73                 , video_desc_(format_desc)\r
  74                 , pixel_desc_(core::pixel_format::bgra)\r
  75         {\r
  76                 pixel_desc_.planes.push_back(core::pixel_format_desc::plane(format_desc.width, format_desc.height, 4));\r
  77         }       \r
  78         \r
  79         const boost::iterator_range<const uint8_t*> image_data(int index = 0) const override\r
  80         {\r
  81                 return image_data_.get();\r
  82         }\r
  83                 \r
  84         const boost::iterator_range<uint8_t*> image_data(int) override\r
  85         {\r
  86                 BOOST_THROW_EXCEPTION(invalid_operation());\r
  87         }\r
  88         \r
  89         virtual const struct pixel_format_desc& get_pixel_format_desc() const override\r
  90         {\r
  91                 return pixel_desc_;\r
  92         }\r
  93 \r
  94         virtual const audio_buffer& audio_data() const override\r
  95         {\r
  96                 return audio_data_;\r
  97         }\r
  98 \r
  99         virtual audio_buffer& audio_data() override\r
 100         {\r
 101                 BOOST_THROW_EXCEPTION(invalid_operation());\r
 102         }\r
 103 \r
 104         virtual double get_frame_rate() const override\r
 105         {\r
 106                 return video_desc_.fps;\r
 107         }\r
 108 \r
 109         virtual int width() const override\r
 110         {\r
 111                 return video_desc_.width;\r
 112         }\r
 113 \r
 114         virtual int height() const override\r
 115         {\r
 116                 return video_desc_.height;\r
 117         }\r
 118 \r
 119         virtual const void* tag() const override\r
 120         {\r
 121                 return tag_;\r
 122         }\r
 123 };\r
 124                 \r
 125 struct mixer::impl : boost::noncopyable\r
 126 {                       \r
 127         safe_ptr<gpu::accelerator>                      ogl_;\r
 128         \r
 129         audio_mixer                                                     audio_mixer_;\r
 130         safe_ptr<image_mixer>                           image_mixer_;\r
 131         \r
 132         std::unordered_map<int, blend_mode>     blend_modes_;\r
 133                         \r
 134         executor executor_;\r
 135 \r
 136 public:\r
 137         impl(const safe_ptr<gpu::accelerator>& ogl) \r
 138                 : ogl_(ogl)\r
 139                 , audio_mixer_()\r
 140                 , image_mixer_(make_safe<gpu::image_mixer>(ogl_))\r
 141                 , executor_(L"mixer")\r
 142         {                       \r
 143         }       \r
 144         \r
 145         safe_ptr<const data_frame> operator()(std::map<int, safe_ptr<draw_frame>> frames, const video_format_desc& format_desc)\r
 146         {               \r
 147                 return executor_.invoke([=]() mutable -> safe_ptr<const struct data_frame>\r
 148                 {               \r
 149                         try\r
 150                         {                               \r
 151                                 BOOST_FOREACH(auto& frame, frames)\r
 152                                 {\r
 153                                         auto blend_it = blend_modes_.find(frame.first);\r
 154                                         image_mixer_->begin_layer(blend_it != blend_modes_.end() ? blend_it->second : blend_mode::normal);\r
 155                                                                                                         \r
 156                                         frame.second->accept(audio_mixer_);                                     \r
 157                                         frame.second->accept(*image_mixer_);\r
 158 \r
 159                                         image_mixer_->end_layer();\r
 160                                 }\r
 161 \r
 162                                 auto image = (*image_mixer_)(format_desc);\r
 163                                 auto audio = audio_mixer_(format_desc);\r
 164 \r
 165                                 return make_safe<mixed_frame>(this, std::move(image), std::move(audio), format_desc);   \r
 166                         }\r
 167                         catch(...)\r
 168                         {\r
 169                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 170                                 return data_frame::empty();\r
 171                         }       \r
 172                 });             \r
 173         }\r
 174                                         \r
 175         void set_blend_mode(int index, blend_mode value)\r
 176         {\r
 177                 executor_.begin_invoke([=]\r
 178                 {\r
 179                         auto it = blend_modes_.find(index);\r
 180                         if(it == blend_modes_.end())\r
 181                                 blend_modes_.insert(std::make_pair(index, value));\r
 182                         else\r
 183                                 it->second = value;\r
 184                 }, high_priority);\r
 185         }\r
 186         \r
 187         boost::unique_future<boost::property_tree::wptree> info() const\r
 188         {\r
 189                 boost::promise<boost::property_tree::wptree> info;\r
 190                 info.set_value(boost::property_tree::wptree());\r
 191                 return info.get_future();\r
 192         }\r
 193 };\r
 194         \r
 195 mixer::mixer(const safe_ptr<gpu::accelerator>& ogl) \r
 196         : impl_(new impl(ogl)){}\r
 197 void mixer::set_blend_mode(int index, blend_mode value){impl_->set_blend_mode(index, value);}\r
 198 boost::unique_future<boost::property_tree::wptree> mixer::info() const{return impl_->info();}\r
 199 safe_ptr<const data_frame> mixer::operator()(std::map<int, safe_ptr<draw_frame>> frames, const struct video_format_desc& format_desc){return (*impl_)(std::move(frames), format_desc);}\r
 200 }}