-/*\r
-* copyright (c) 2010 Sveriges Television AB <info@casparcg.com>\r
-*\r
-* This file is part of CasparCG.\r
-*\r
-* CasparCG is free software: you can redistribute it and/or modify\r
-* it under the terms of the GNU General Public License as published by\r
-* the Free Software Foundation, either version 3 of the License, or\r
-* (at your option) any later version.\r
-*\r
-* CasparCG is distributed in the hope that it will be useful,\r
-* but WITHOUT ANY WARRANTY; without even the implied warranty of\r
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
-* GNU General Public License for more details.\r
-\r
-* You should have received a copy of the GNU General Public License\r
-* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
-*\r
-*/\r
- \r
-#include "oal_consumer.h"\r
-\r
-#include <common/diagnostics/graph.h>\r
-#include <common/log/log.h>\r
-#include <common/utility/timer.h>\r
-\r
-#include <core/video_format.h>\r
-\r
-#include <core/mixer/read_frame.h>\r
-\r
-#include <SFML/Audio.hpp>\r
-\r
-#include <boost/circular_buffer.hpp>\r
-#include <boost/timer.hpp>\r
-\r
-#include <tbb/concurrent_queue.h>\r
-\r
-namespace caspar {\r
-\r
-struct oal_consumer::implementation : public sf::SoundStream, boost::noncopyable\r
-{\r
- safe_ptr<diagnostics::graph> graph_;\r
- boost::timer perf_timer_;\r
-\r
- tbb::concurrent_bounded_queue<std::vector<short>> input_;\r
- boost::circular_buffer<std::vector<short>> container_;\r
- tbb::atomic<bool> is_running_;\r
-\r
- core::video_format_desc format_desc_;\r
- int preroll_count_;\r
-public:\r
- implementation(const core::video_format_desc& format_desc) \r
- : graph_(diagnostics::create_graph(narrow(print())))\r
- , container_(5)\r
- , format_desc_(format_desc)\r
- , preroll_count_(0)\r
- {\r
- graph_->add_guide("tick-time", 0.5);\r
- graph_->set_color("tick-time", diagnostics::color(0.1f, 0.7f, 0.8f));\r
- is_running_ = true;\r
- input_.set_capacity(CONSUMER_BUFFER_DEPTH-2);\r
- \r
- sf::SoundStream::Initialize(2, 48000);\r
- Play(); \r
- CASPAR_LOG(info) << print() << " Sucessfully initialized.";\r
- }\r
-\r
- ~implementation()\r
- {\r
- is_running_ = false;\r
- input_.try_push(std::vector<short>());\r
- input_.try_push(std::vector<short>());\r
- Stop();\r
- CASPAR_LOG(info) << print() << L" Shutting down."; \r
- }\r
- \r
- void send(const safe_ptr<core::read_frame>& frame)\r
- { \r
- if(preroll_count_ < input_.capacity())\r
- {\r
- while(input_.try_push(std::vector<int16_t>(format_desc_.audio_samples_per_frame, 0)))\r
- ++preroll_count_;\r
- }\r
-\r
- input_.push(std::vector<int16_t>(frame->audio_data().begin(), frame->audio_data().end())); \r
- }\r
-\r
- size_t buffer_depth() const{return 3;}\r
-\r
- virtual bool OnGetData(sf::SoundStream::Chunk& data)\r
- { \r
- std::vector<short> audio_data; \r
- input_.pop(audio_data);\r
- \r
- container_.push_back(std::move(audio_data));\r
- data.Samples = container_.back().data();\r
- data.NbSamples = container_.back().size(); \r
- \r
- graph_->update_value("tick-time", perf_timer_.elapsed()*format_desc_.fps*0.5); \r
- perf_timer_.restart();\r
-\r
- return is_running_;\r
- }\r
-\r
- std::wstring print() const\r
- {\r
- return L"oal[" + format_desc_.name + L"]";\r
- }\r
-};\r
-\r
-oal_consumer::oal_consumer(){}\r
-oal_consumer::oal_consumer(oal_consumer&& other) : impl_(std::move(other.impl_)){}\r
-void oal_consumer::send(const safe_ptr<core::read_frame>& frame){impl_->send(frame);}\r
-size_t oal_consumer::buffer_depth() const{return impl_->buffer_depth();}\r
-void oal_consumer::initialize(const core::video_format_desc& format_desc){impl_.reset(new implementation(format_desc));}\r
-std::wstring oal_consumer::print() const { return impl_->print(); }\r
-const core::video_format_desc& oal_consumer::get_video_format_desc() const{return impl_->format_desc_;}\r
-\r
-safe_ptr<core::frame_consumer> create_oal_consumer(const std::vector<std::wstring>& params)\r
-{\r
- if(params.size() < 1 || params[0] != L"OAL")\r
- return core::frame_consumer::empty();\r
-\r
- return make_safe<oal_consumer>();\r
-}\r
-}\r
+/*
+* Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
+*
+* This file is part of CasparCG (www.casparcg.com).
+*
+* CasparCG is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* CasparCG is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
+*
+* Author: Robert Nagy, ronag89@gmail.com
+*/
+
+#include "oal_consumer.h"
+
+#include <common/except.h>
+#include <common/executor.h>
+#include <common/diagnostics/graph.h>
+#include <common/log.h>
+#include <common/utf.h>
+#include <common/env.h>
+
+#include <core/consumer/frame_consumer.h>
+#include <core/frame/frame.h>
+#include <core/mixer/audio/audio_util.h>
+#include <core/mixer/audio/audio_mixer.h>
+#include <core/video_format.h>
+
+#include <boost/circular_buffer.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/timer.hpp>
+#include <boost/foreach.hpp>
+#include <boost/thread/once.hpp>
+
+#include <tbb/concurrent_queue.h>
+
+#include <al/alc.h>
+#include <al/al.h>
+
+#include <array>
+
+namespace caspar { namespace oal {
+
+typedef std::vector<int16_t, tbb::cache_aligned_allocator<int16_t>> audio_buffer_16;
+
+class device
+{
+ ALCdevice* device_;
+ ALCcontext* context_;
+
+public:
+ device()
+ : device_(0)
+ , context_(0)
+ {
+ device_ = alcOpenDevice(nullptr);
+
+ if(!device_)
+ CASPAR_THROW_EXCEPTION(invalid_operation() << msg_info("Failed to initialize audio device."));
+
+ context_ = alcCreateContext(device_, nullptr);
+
+ if(!context_)
+ CASPAR_THROW_EXCEPTION(invalid_operation() << msg_info("Failed to create audio context."));
+
+ if(alcMakeContextCurrent(context_) == ALC_FALSE)
+ CASPAR_THROW_EXCEPTION(invalid_operation() << msg_info("Failed to activate audio context."));
+ }
+
+ ~device()
+ {
+ alcMakeContextCurrent(nullptr);
+
+ if(context_)
+ alcDestroyContext(context_);
+
+ if(device_)
+ alcCloseDevice(device_);
+ }
+
+ ALCdevice* get()
+ {
+ return device_;
+ }
+};
+
+void init_device()
+{
+ static std::unique_ptr<device> instance;
+ static boost::once_flag f = BOOST_ONCE_INIT;
+
+ boost::call_once(f, []{instance.reset(new device());});
+}
+
+struct oal_consumer : public core::frame_consumer
+{
+ spl::shared_ptr<diagnostics::graph> graph_;
+ boost::timer perf_timer_;
+ int channel_index_;
+
+ core::video_format_desc format_desc_;
+
+ ALuint source_;
+ std::array<ALuint, 3> buffers_;
+
+ executor executor_;
+
+public:
+ oal_consumer()
+ : channel_index_(-1)
+ , source_(0)
+ , executor_(L"oal_consumer")
+ {
+ buffers_.assign(0);
+
+ init_device();
+
+ graph_->set_color("tick-time", diagnostics::color(0.0f, 0.6f, 0.9f));
+ graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
+ graph_->set_color("late-frame", diagnostics::color(0.6f, 0.3f, 0.3f));
+ diagnostics::register_graph(graph_);
+ }
+
+ ~oal_consumer()
+ {
+ executor_.begin_invoke([=]
+ {
+ if(source_)
+ {
+ alSourceStop(source_);
+ alDeleteSources(1, &source_);
+ }
+
+ BOOST_FOREACH(auto& buffer, buffers_)
+ {
+ if(buffer)
+ alDeleteBuffers(1, &buffer);
+ };
+ });
+ }
+
+ // frame consumer
+
+ void initialize(const core::video_format_desc& format_desc, int channel_index) override
+ {
+ format_desc_ = format_desc;
+ channel_index_ = channel_index;
+ graph_->set_text(print());
+
+ executor_.begin_invoke([=]
+ {
+ alGenBuffers(static_cast<ALsizei>(buffers_.size()), buffers_.data());
+ alGenSources(1, &source_);
+
+ for(std::size_t n = 0; n < buffers_.size(); ++n)
+ {
+ std::vector<int16_t> audio(format_desc_.audio_cadence[n % format_desc_.audio_cadence.size()], 0);
+ alBufferData(buffers_[n], AL_FORMAT_STEREO16, audio.data(), static_cast<ALsizei>(audio.size()*sizeof(int16_t)), format_desc_.audio_sample_rate);
+ alSourceQueueBuffers(source_, 1, &buffers_[n]);
+ }
+
+ alSourcei(source_, AL_LOOPING, AL_FALSE);
+
+ alSourcePlay(source_);
+ });
+ }
+
+ bool send(core::const_frame frame) override
+ {
+ executor_.begin_invoke([=]
+ {
+ ALenum state;
+ alGetSourcei(source_, AL_SOURCE_STATE,&state);
+ if(state != AL_PLAYING)
+ {
+ for(int n = 0; n < buffers_.size()-1; ++n)
+ {
+ ALuint buffer = 0;
+ alSourceUnqueueBuffers(source_, 1, &buffer);
+ if(buffer)
+ {
+ std::vector<int16_t> audio(format_desc_.audio_cadence[n % format_desc_.audio_cadence.size()], 0);
+ alBufferData(buffer, AL_FORMAT_STEREO16, audio.data(), static_cast<ALsizei>(audio.size()*sizeof(int16_t)), format_desc_.audio_sample_rate);
+ alSourceQueueBuffers(source_, 1, &buffer);
+ }
+ }
+ alSourcePlay(source_);
+ graph_->set_tag("late-frame");
+ }
+
+ auto audio = core::audio_32_to_16(frame.audio_data());
+
+ ALuint buffer = 0;
+ alSourceUnqueueBuffers(source_, 1, &buffer);
+ if(buffer)
+ {
+ alBufferData(buffer, AL_FORMAT_STEREO16, audio.data(), static_cast<ALsizei>(audio.size()*sizeof(int16_t)), format_desc_.audio_sample_rate);
+ alSourceQueueBuffers(source_, 1, &buffer);
+ }
+ else
+ graph_->set_tag("dropped-frame");
+
+ graph_->set_value("tick-time", perf_timer_.elapsed()*format_desc_.fps*0.5);
+ perf_timer_.restart();
+ });
+
+ return true;
+ }
+
+ std::wstring print() const override
+ {
+ return L"oal[" + boost::lexical_cast<std::wstring>(channel_index_) + L"|" + format_desc_.name + L"]";
+ }
+
+ std::wstring name() const override
+ {
+ return L"system-audio";
+ }
+
+ boost::property_tree::wptree info() const override
+ {
+ boost::property_tree::wptree info;
+ info.add(L"type", L"system-audio");
+ return info;
+ }
+
+ bool has_synchronization_clock() const override
+ {
+ return false;
+ }
+
+ int buffer_depth() const override
+ {
+ return 3;
+ }
+
+ int index() const override
+ {
+ return 500;
+ }
+
+ void subscribe(const monitor::observable::observer_ptr& o) override
+ {
+ }
+
+ void unsubscribe(const monitor::observable::observer_ptr& o) override
+ {
+ }
+};
+
+spl::shared_ptr<core::frame_consumer> create_consumer(const std::vector<std::wstring>& params)
+{
+ if(params.size() < 1 || params[0] != L"AUDIO")
+ return core::frame_consumer::empty();
+
+ return spl::make_shared<oal_consumer>();
+}
+
+spl::shared_ptr<core::frame_consumer> create_consumer()
+{
+ return spl::make_shared<oal_consumer>();
+}
+
+}}
projects / casparcg / blobdiff