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