git.sesse.net Git - casparcg/blob - core/consumer/oal/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 "../../StdAfx.h"\r
  22 \r
  23 #include "oal_consumer.h"\r
  24 \r
  25 #include "../../video_format.h"\r
  26 \r
  27 #include "../../mixer/frame/read_frame.h"\r
  28 \r
  29 #include <SFML/Audio.hpp>\r
  30 \r
  31 #include <boost/circular_buffer.hpp>\r
  32 \r
  33 namespace caspar { namespace core {\r
  34 \r
  35 struct oal_consumer::implementation : public sf::SoundStream, boost::noncopyable\r
  36 {\r
  37         tbb::concurrent_bounded_queue<std::vector<short>> input_;\r
  38         boost::circular_buffer<std::vector<short>> container_;\r
  39         tbb::atomic<bool> is_running_;\r
  40 public:\r
  41         implementation() \r
  42                 : container_(5)\r
  43         {\r
  44                 is_running_ = true;\r
  45                 sf::SoundStream::Initialize(2, 48000);\r
  46                 Play();         \r
  47                 CASPAR_LOG(info) << "Sucessfully started oal_consumer";\r
  48         }\r
  49 \r
  50         ~implementation()\r
  51         {\r
  52                 is_running_ = false;\r
  53                 input_.try_push(std::vector<short>());\r
  54                 input_.try_push(std::vector<short>());\r
  55                 CASPAR_LOG(info) << "Sucessfully ended oal_consumer";\r
  56         }\r
  57         \r
  58         virtual void send(const safe_ptr<const read_frame>& frame)\r
  59         {                               \r
  60                 if(frame->audio_data().empty())\r
  61                         return;\r
  62 \r
  63                 input_.push(std::vector<short>(frame->audio_data().begin(), frame->audio_data().end()));        \r
  64         }\r
  65 \r
  66         virtual size_t buffer_depth() const{return 3;}\r
  67 \r
  68         virtual bool OnGetData(sf::SoundStream::Chunk& data)\r
  69         {               \r
  70                 std::vector<short> audio_data;          \r
  71                 input_.pop(audio_data);\r
  72                                 \r
  73                 container_.push_back(std::move(audio_data));\r
  74                 data.Samples = container_.back().data();\r
  75                 data.NbSamples = container_.back().size();              \r
  76 \r
  77                 return is_running_;\r
  78         }\r
  79 };\r
  80 \r
  81 oal_consumer::oal_consumer(oal_consumer&& other) : impl_(std::move(other.impl_)){}\r
  82 oal_consumer::oal_consumer(const video_format_desc&) : impl_(new implementation()){}\r
  83 void oal_consumer::send(const safe_ptr<const read_frame>& frame){impl_->send(frame);}\r
  84 size_t oal_consumer::buffer_depth() const{return impl_->buffer_depth();}\r
  85 \r
  86 safe_ptr<frame_consumer> create_oal_consumer(const std::vector<std::wstring>& params)\r
  87 {\r
  88         if(params.size() < 2 || params[0] != L"OAL")\r
  89                 return frame_consumer::empty();\r
  90 \r
  91         auto format_desc = video_format_desc::get(params[1]);\r
  92         if(format_desc.format == video_format::invalid)\r
  93                 return frame_consumer::empty();\r
  94 \r
  95         return make_safe<oal_consumer>(format_desc);\r
  96 }\r
  97 }}\r