2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
\r
4 * This file is part of CasparCG.
\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
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
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
21 #include "oal_consumer.h"
\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
29 #include <core/consumer/frame_consumer.h>
\r
30 #include <core/video_format.h>
\r
32 #include <core/mixer/read_frame.h>
\r
34 #include <SFML/Audio.hpp>
\r
36 #include <boost/circular_buffer.hpp>
\r
37 #include <boost/timer.hpp>
\r
39 #include <tbb/concurrent_queue.h>
\r
43 struct oal_consumer : public core::frame_consumer, public sf::SoundStream
\r
45 safe_ptr<diagnostics::graph> graph_;
\r
46 boost::timer perf_timer_;
\r
48 tbb::concurrent_bounded_queue<std::shared_ptr<std::vector<short>>> input_;
\r
49 boost::circular_buffer<std::vector<short>> container_;
\r
50 tbb::atomic<bool> is_running_;
\r
52 core::video_format_desc format_desc_;
\r
56 : graph_(diagnostics::create_graph(narrow(print())))
\r
60 if(core::consumer_buffer_depth() < 3)
\r
61 BOOST_THROW_EXCEPTION(invalid_argument() << msg_info("audio-consumer does not support buffer-depth lower than 3."));
\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
66 input_.set_capacity(core::consumer_buffer_depth()-2);
\r
71 is_running_ = false;
\r
72 input_.try_push(std::make_shared<std::vector<short>>());
\r
73 input_.try_push(std::make_shared<std::vector<short>>());
\r
75 CASPAR_LOG(info) << print() << L" Shutting down.";
\r
78 virtual void initialize(const core::video_format_desc& format_desc)
\r
80 format_desc_ = format_desc;
\r
81 sf::SoundStream::Initialize(2, 48000);
\r
82 CASPAR_LOG(info) << print() << " Sucessfully initialized.";
\r
85 virtual bool send(const safe_ptr<core::read_frame>& frame)
\r
87 if(preroll_count_ < input_.capacity())
\r
89 while(input_.try_push(std::make_shared<std::vector<int16_t>>(format_desc_.audio_samples_per_frame, 0)))
\r
94 std::vector<int16_t> audio16(frame->audio_data().size());
\r
95 for(size_t n = 0; n < audio16.size(); ++n)
\r
96 audio16[n] = (frame->audio_data()[n] >> 16) & 0xffff;
\r
98 input_.push(std::make_shared<std::vector<int16_t>>(std::move(audio16)));
\r
103 virtual bool OnGetData(sf::SoundStream::Chunk& data)
\r
105 std::shared_ptr<std::vector<short>> audio_data;
\r
106 input_.pop(audio_data);
\r
108 container_.push_back(std::move(*audio_data));
\r
109 data.Samples = container_.back().data();
\r
110 data.NbSamples = container_.back().size();
\r
112 graph_->update_value("tick-time", perf_timer_.elapsed()*format_desc_.fps*0.5);
\r
113 perf_timer_.restart();
\r
115 return is_running_;
\r
118 virtual std::wstring print() const
\r
120 return L"oal[" + format_desc_.name + L"]";
\r
123 virtual const core::video_format_desc& get_video_format_desc() const
\r
125 return format_desc_;
\r
129 safe_ptr<core::frame_consumer> create_oal_consumer(const std::vector<std::wstring>& params)
\r
131 if(params.size() < 1 || params[0] != L"OAL")
\r
132 return core::frame_consumer::empty();
\r
134 return make_safe<oal_consumer>();
\r
137 safe_ptr<core::frame_consumer> create_oal_consumer()
\r
139 return make_safe<oal_consumer>();
\r