git.sesse.net Git - casparcg/blob - modules/oal/consumer/oal_consumer.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 "oal_consumer.h"\r
  22 \r
  23 #include <common/exception/exceptions.h>\r
  24 #include <common/diagnostics/graph.h>\r
  25 #include <common/log/log.h>\r
  26 #include <common/utility/timer.h>\r
  27 #include <common/utility/string.h>\r
  28 \r
  29 #include <core/consumer/frame_consumer.h>\r
  30 #include <core/mixer/audio/audio_util.h>\r
  31 #include <core/video_format.h>\r
  32 \r
  33 #include <core/mixer/read_frame.h>\r
  34 \r
  35 #include <SFML/Audio.hpp>\r
  36 \r
  37 #include <boost/circular_buffer.hpp>\r
  38 #include <boost/property_tree/ptree.hpp>\r
  39 #include <boost/timer.hpp>\r
  40 \r
  41 #include <tbb/concurrent_queue.h>\r
  42 \r
  43 namespace caspar { namespace oal {\r
  44 \r
  45 typedef std::vector<int16_t, tbb::cache_aligned_allocator<int16_t>> audio_buffer_16;\r
  46 \r
  47 struct oal_consumer : public core::frame_consumer,  public sf::SoundStream\r
  48 {\r
  49         safe_ptr<diagnostics::graph>                                            graph_;\r
  50         boost::timer                                                                            perf_timer_;\r
  51         int                                                                                                     channel_index_;\r
  52 \r
  53         tbb::concurrent_bounded_queue<std::shared_ptr<audio_buffer_16>> input_;\r
  54         boost::circular_buffer<audio_buffer_16>                         container_;\r
  55         tbb::atomic<bool>                                                                       is_running_;\r
  56         core::audio_buffer                                                                      temp;\r
  57 \r
  58         core::video_format_desc                                                         format_desc_;\r
  59 public:\r
  60         oal_consumer() \r
  61                 : container_(16)\r
  62                 , channel_index_(-1)\r
  63         {\r
  64                 graph_->add_guide("tick-time", 0.5);\r
  65                 graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));   \r
  66                 diagnostics::register_graph(graph_);\r
  67 \r
  68                 is_running_ = true;\r
  69                 input_.set_capacity(1);\r
  70         }\r
  71 \r
  72         ~oal_consumer()\r
  73         {\r
  74                 is_running_ = false;\r
  75                 input_.try_push(std::make_shared<audio_buffer_16>());\r
  76                 input_.try_push(std::make_shared<audio_buffer_16>());\r
  77                 Stop();\r
  78                 input_.try_push(std::make_shared<audio_buffer_16>());\r
  79                 input_.try_push(std::make_shared<audio_buffer_16>());\r
  80 \r
  81                 CASPAR_LOG(info) << print() << L" Successfully Uninitialized."; \r
  82         }\r
  83 \r
  84         // frame consumer\r
  85 \r
  86         virtual void initialize(const core::video_format_desc& format_desc, int channel_index) override\r
  87         {\r
  88                 format_desc_    = format_desc;          \r
  89                 channel_index_  = channel_index;\r
  90                 graph_->set_text(print());\r
  91 \r
  92                 if(Status() != Playing)\r
  93                 {\r
  94                         sf::SoundStream::Initialize(2, 48000);\r
  95                         Play();         \r
  96                 }\r
  97                 CASPAR_LOG(info) << print() << " Sucessfully Initialized.";\r
  98         }\r
  99         \r
 100         virtual bool send(const safe_ptr<core::read_frame>& frame) override\r
 101         {                       \r
 102                 input_.push(std::make_shared<audio_buffer_16>(core::audio_32_to_16(frame->audio_data())));\r
 103                 return true;\r
 104         }\r
 105         \r
 106         virtual std::wstring print() const override\r
 107         {\r
 108                 return L"oal[" + boost::lexical_cast<std::wstring>(channel_index_) + L"|" + format_desc_.name + L"]";\r
 109         }\r
 110 \r
 111         virtual boost::property_tree::wptree info() const override\r
 112         {\r
 113                 boost::property_tree::wptree info;\r
 114                 info.add(L"type", L"oal-consumer");\r
 115                 return info;\r
 116         }\r
 117         \r
 118         virtual size_t buffer_depth() const override\r
 119         {\r
 120                 return 2;\r
 121         }\r
 122 \r
 123         // oal_consumer\r
 124         \r
 125         virtual bool OnGetData(sf::SoundStream::Chunk& data) override\r
 126         {               \r
 127                 std::shared_ptr<audio_buffer_16> audio_data;            \r
 128                 input_.pop(audio_data);\r
 129                                 \r
 130                 container_.push_back(std::move(*audio_data));\r
 131                 data.Samples = container_.back().data();\r
 132                 data.NbSamples = container_.back().size();      \r
 133                 \r
 134                 graph_->update_value("tick-time", perf_timer_.elapsed()*format_desc_.fps*0.5);          \r
 135                 perf_timer_.restart();\r
 136 \r
 137                 return is_running_;\r
 138         }\r
 139 \r
 140         virtual int index() const override\r
 141         {\r
 142                 return 500;\r
 143         }\r
 144 };\r
 145 \r
 146 safe_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)\r
 147 {\r
 148         if(params.size() < 1 || params[0] != L"AUDIO")\r
 149                 return core::frame_consumer::empty();\r
 150 \r
 151         return make_safe<oal_consumer>();\r
 152 }\r
 153 \r
 154 safe_ptr<core::frame_consumer> create_consumer()\r
 155 {\r
 156         return make_safe<oal_consumer>();\r
 157 }\r
 158 \r
 159 }}\r