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 "../stdafx.h"
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23 #include "decklink_producer.h"
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25 #include "../interop/DeckLinkAPI_h.h"
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26 #include "../util/util.h"
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28 #include <common/diagnostics/graph.h>
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29 #include <common/concurrency/com_context.h>
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30 #include <common/exception/exceptions.h>
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31 #include <common/memory/memclr.h>
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32 #include <common/utility/timer.h>
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34 #include <core/producer/frame/frame_factory.h>
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35 #include <core/producer/frame/write_frame.h>
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37 #include <tbb/concurrent_queue.h>
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38 #include <tbb/atomic.h>
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40 #include <boost/algorithm/string.hpp>
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41 #include <boost/timer.hpp>
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43 #pragma warning(push)
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44 #pragma warning(disable : 4996)
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46 #include <atlbase.h>
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49 #include <atlhost.h>
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51 #pragma warning(push)
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53 #include <functional>
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57 class decklink_producer : public IDeckLinkInputCallback
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59 CComPtr<IDeckLink> decklink_;
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60 CComQIPtr<IDeckLinkInput> input_;
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62 const std::wstring model_name_;
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63 const core::video_format_desc format_desc_;
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64 const size_t device_index_;
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66 std::shared_ptr<diagnostics::graph> graph_;
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67 boost::timer perf_timer_;
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69 std::vector<short> audio_data_;
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71 std::shared_ptr<core::frame_factory> frame_factory_;
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73 tbb::concurrent_bounded_queue<safe_ptr<core::basic_frame>> frame_buffer_;
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74 safe_ptr<core::basic_frame> tail_;
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76 std::exception_ptr exception_;
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79 decklink_producer(const core::video_format_desc& format_desc, size_t device_index, const std::shared_ptr<core::frame_factory>& frame_factory)
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80 : decklink_(get_device(device_index))
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82 , model_name_(get_model_name(decklink_))
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83 , format_desc_(format_desc)
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84 , device_index_(device_index)
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85 , frame_factory_(frame_factory)
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86 , tail_(core::basic_frame::empty())
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88 frame_buffer_.set_capacity(2);
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90 graph_ = diagnostics::create_graph(boost::bind(&decklink_producer::print, this));
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91 graph_->add_guide("tick-time", 0.5);
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92 graph_->set_color("tick-time", diagnostics::color(0.1f, 0.7f, 0.8f));
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93 graph_->set_color("late-frame", diagnostics::color(0.6f, 0.3f, 0.3f));
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94 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));
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95 graph_->set_color("output-buffer", diagnostics::color(0.0f, 1.0f, 0.0f));
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97 auto display_mode = get_display_mode(input_, format_desc_.format);
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99 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Card does not support requested videoformat."));
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101 // NOTE: For some reason the code below fails even for PAL.
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102 //BMDDisplayModeSupport displayModeSupport;
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103 //if(FAILED(input_->DoesSupportVideoMode(display_mode->GetDisplayMode(), bmdFormat8BitBGRA, bmdVideoOutputFlagDefault, &displayModeSupport, nullptr)) || displayModeSupport == bmdDisplayModeNotSupported)
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104 // BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Card does not support requested videoformat."));
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105 //else if(displayModeSupport == bmdDisplayModeSupportedWithConversion)
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106 // CASPAR_LOG(warning) << print() << " Display mode is supported with conversion.";
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108 // NOTE: bmdFormat8BitARGB is currently not supported by any decklink card. (2011-05-08)
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109 if(FAILED(input_->EnableVideoInput(display_mode->GetDisplayMode(), bmdFormat8BitYUV, 0)))
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110 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Could not enable video input."));
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112 if(FAILED(input_->EnableAudioInput(bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, 2)))
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113 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Could not enable audio input."));
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115 if (FAILED(input_->SetCallback(this)) != S_OK)
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116 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to set input callback."));
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118 if(FAILED(input_->StartStreams()))
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119 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to start input stream."));
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121 CASPAR_LOG(info) << print() << " successfully initialized decklink for " << format_desc_.name;
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124 ~decklink_producer()
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126 if(input_ != nullptr)
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128 input_->StopStreams();
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129 input_->DisableVideoInput();
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133 virtual HRESULT STDMETHODCALLTYPE QueryInterface (REFIID, LPVOID*) {return E_NOINTERFACE;}
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134 virtual ULONG STDMETHODCALLTYPE AddRef () {return 1;}
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135 virtual ULONG STDMETHODCALLTYPE Release () {return 1;}
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137 virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents /*notificationEvents*/, IDeckLinkDisplayMode* newDisplayMode, BMDDetectedVideoInputFormatFlags /*detectedSignalFlags*/)
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142 virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame* video, IDeckLinkAudioInputPacket* audio)
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146 graph_->update_value("tick-time", static_cast<float>(perf_timer_.elapsed()/format_desc_.interval*0.5));
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147 perf_timer_.restart();
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149 core::pixel_format_desc desc;
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150 desc.pix_fmt = core::pixel_format::ycbcr;
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151 desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width, format_desc_.height, 1));
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152 desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width/2, format_desc_.height, 1));
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153 desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width/2, format_desc_.height, 1));
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154 auto frame = frame_factory_->create_frame(this, desc);
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156 void* bytes = nullptr;
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157 video->GetBytes(&bytes);
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158 unsigned char* data = reinterpret_cast<unsigned char*>(bytes);
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159 const size_t frame_size = (format_desc_.width * 16 / 8) * format_desc_.height;
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161 // Convert to planar YUV422
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162 unsigned char* y = frame->image_data(0).begin();
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163 unsigned char* cb = frame->image_data(1).begin();
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164 unsigned char* cr = frame->image_data(2).begin();
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166 tbb::parallel_for(tbb::blocked_range<size_t>(0, frame_size/4), [&](const tbb::blocked_range<size_t>& r)
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168 for(auto n = r.begin(); n != r.end(); ++n)
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170 cb[n] = data[n*4+0];
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171 y [n*2+0] = data[n*4+1];
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172 cr[n] = data[n*4+2];
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173 y [n*2+1] = data[n*4+3];
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177 // It is assumed that audio is always equal or ahead of video.
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178 if(audio && SUCCEEDED(audio->GetBytes(&bytes)))
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180 const size_t audio_samples = static_cast<size_t>(48000.0 / format_desc_.fps);
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181 const size_t audio_nchannels = 2;
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183 auto sample_frame_count = audio->GetSampleFrameCount();
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184 auto audio_data = reinterpret_cast<short*>(bytes);
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185 audio_data_.insert(audio_data_.end(), audio_data, audio_data + sample_frame_count*2);
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187 if(audio_data_.size() > audio_samples*audio_nchannels)
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189 frame->audio_data() = std::vector<short>(audio_data_.begin(), audio_data_.begin() + audio_samples*audio_nchannels);
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190 audio_data_.erase(audio_data_.begin(), audio_data_.begin() + audio_samples*audio_nchannels);
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194 if(!frame_buffer_.try_push(frame))
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195 graph_->add_tag("dropped-frame");
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196 graph_->set_value("output-buffer", static_cast<float>(frame_buffer_.size())/static_cast<float>(frame_buffer_.capacity()));
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200 exception_ = std::current_exception();
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207 safe_ptr<core::basic_frame> get_frame()
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209 if(exception_ != nullptr)
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210 std::rethrow_exception(exception_);
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212 if(!frame_buffer_.try_pop(tail_))
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213 graph_->add_tag("late-frame");
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214 graph_->set_value("output-buffer", static_cast<float>(frame_buffer_.size())/static_cast<float>(frame_buffer_.capacity()));
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218 std::wstring print() const
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220 return model_name_ + L" [" + boost::lexical_cast<std::wstring>(device_index_) + L"]";
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224 class decklink_producer_proxy : public core::frame_producer
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226 com_context<decklink_producer> context_;
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229 explicit decklink_producer_proxy(const safe_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, size_t device_index)
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230 : context_(L"decklink_producer[" + boost::lexical_cast<std::wstring>(device_index) + L"]")
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232 context_.reset([&]{return new decklink_producer(format_desc, device_index, frame_factory);});
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235 virtual safe_ptr<core::basic_frame> receive()
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237 return context_->get_frame();
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240 std::wstring print() const
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242 return context_->print();
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246 safe_ptr<core::frame_producer> create_decklink_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)
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248 if(params.empty() || !boost::iequals(params[0], "decklink"))
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249 return core::frame_producer::empty();
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251 size_t device_index = 1;
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252 if(params.size() > 1)
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253 device_index = lexical_cast_or_default(params[1], 1);
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255 core::video_format_desc format_desc = core::video_format_desc::get(L"PAL");
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256 if(params.size() > 2)
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258 auto desc = core::video_format_desc::get(params[2]);
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259 if(desc.format != core::video_format::invalid)
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260 format_desc = desc;
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263 return make_safe<decklink_producer_proxy>(frame_factory, format_desc, device_index);
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