2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG.
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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21 #include "oal_consumer.h"
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23 #include <common/diagnostics/graph.h>
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24 #include <common/log/log.h>
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25 #include <common/utility/timer.h>
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27 #include <core/video_format.h>
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29 #include <core/mixer/read_frame.h>
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31 #include <SFML/Audio.hpp>
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33 #include <boost/circular_buffer.hpp>
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34 #include <boost/timer.hpp>
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36 #include <tbb/concurrent_queue.h>
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40 struct oal_consumer::implementation : public sf::SoundStream, boost::noncopyable
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42 safe_ptr<diagnostics::graph> graph_;
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43 boost::timer perf_timer_;
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45 tbb::concurrent_bounded_queue<std::vector<short>> input_;
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46 boost::circular_buffer<std::vector<short>> container_;
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47 tbb::atomic<bool> is_running_;
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49 core::video_format_desc format_desc_;
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52 implementation(const core::video_format_desc& format_desc)
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53 : graph_(diagnostics::create_graph(narrow(print())))
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55 , format_desc_(format_desc)
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58 graph_->add_guide("tick-time", 0.5);
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59 graph_->set_color("tick-time", diagnostics::color(0.1f, 0.7f, 0.8f));
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61 input_.set_capacity(CONSUMER_BUFFER_DEPTH-2);
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63 sf::SoundStream::Initialize(2, 48000);
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65 CASPAR_LOG(info) << print() << " Sucessfully initialized.";
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70 is_running_ = false;
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71 input_.try_push(std::vector<short>());
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72 input_.try_push(std::vector<short>());
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74 CASPAR_LOG(info) << print() << L" Shutting down.";
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77 void send(const safe_ptr<const core::read_frame>& frame)
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79 if(preroll_count_ < input_.capacity())
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81 while(input_.try_push(std::vector<short>(static_cast<size_t>(48000.0f/format_desc_.fps)*2, 0)))
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85 if(!frame->audio_data().empty())
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86 input_.push(std::vector<short>(frame->audio_data().begin(), frame->audio_data().end()));
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88 input_.push(std::vector<short>(3840, 0)); //static_cast<size_t>(48000.0f/format_desc_.fps)*2
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91 size_t buffer_depth() const{return 3;}
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93 virtual bool OnGetData(sf::SoundStream::Chunk& data)
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95 std::vector<short> audio_data;
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96 input_.pop(audio_data);
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98 container_.push_back(std::move(audio_data));
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99 data.Samples = container_.back().data();
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100 data.NbSamples = container_.back().size();
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102 graph_->update_value("tick-time", perf_timer_.elapsed()*format_desc_.fps*0.5);
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103 perf_timer_.restart();
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105 return is_running_;
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108 std::wstring print() const
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110 return L"oal[" + format_desc_.name + L"]";
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114 oal_consumer::oal_consumer(){}
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115 oal_consumer::oal_consumer(oal_consumer&& other) : impl_(std::move(other.impl_)){}
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116 void oal_consumer::send(const safe_ptr<const core::read_frame>& frame){impl_->send(frame);}
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117 size_t oal_consumer::buffer_depth() const{return impl_->buffer_depth();}
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118 void oal_consumer::initialize(const core::video_format_desc& format_desc){impl_.reset(new implementation(format_desc));}
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119 std::wstring oal_consumer::print() const { return impl_->print(); }
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120 const core::video_format_desc& oal_consumer::get_video_format_desc() const{return impl_->format_desc_;}
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122 safe_ptr<core::frame_consumer> create_oal_consumer(const std::vector<std::wstring>& params)
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124 if(params.size() < 1 || params[0] != L"OAL")
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125 return core::frame_consumer::empty();
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127 return make_safe<oal_consumer>();
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