git.sesse.net Git - casparcg/blob - modules/decklink/producer/decklink_producer.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 "decklink_producer.h"\r
  24 \r
  25 #include "../interop/DeckLinkAPI_h.h"\r
  26 #include "../util/util.h"\r
  27 \r
  28 #include <common/diagnostics/graph.h>\r
  29 #include <common/concurrency/com_context.h>\r
  30 #include <common/exception/exceptions.h>\r
  31 #include <common/memory/memclr.h>\r
  32 #include <common/utility/timer.h>\r
  33 \r
  34 #include <core/producer/frame/frame_factory.h>\r
  35 #include <core/producer/frame/write_frame.h>\r
  36 \r
  37 #include <tbb/concurrent_queue.h>\r
  38 #include <tbb/atomic.h>\r
  39 \r
  40 #include <boost/algorithm/string.hpp>\r
  41 #include <boost/timer.hpp>\r
  42 \r
  43 #pragma warning(push)\r
  44 #pragma warning(disable : 4996)\r
  45 \r
  46         #include <atlbase.h>\r
  47 \r
  48         #include <atlcom.h>\r
  49         #include <atlhost.h>\r
  50 \r
  51 #pragma warning(push)\r
  52 \r
  53 #include <functional>\r
  54 \r
  55 namespace caspar { \r
  56 \r
  57 class decklink_producer : public IDeckLinkInputCallback\r
  58 {       \r
  59         CComPtr<IDeckLink>                              decklink_;\r
  60         CComQIPtr<IDeckLinkInput>               input_;\r
  61         \r
  62         const std::wstring model_name_;\r
  63         const core::video_format_desc format_desc_;\r
  64         const size_t device_index_;\r
  65 \r
  66         std::shared_ptr<diagnostics::graph> graph_;\r
  67         boost::timer perf_timer_;\r
  68         \r
  69         std::vector<short>                      audio_data_;\r
  70 \r
  71         std::shared_ptr<core::frame_factory> frame_factory_;\r
  72 \r
  73         tbb::concurrent_bounded_queue<safe_ptr<core::basic_frame>> frame_buffer_;\r
  74         safe_ptr<core::basic_frame> tail_;\r
  75 \r
  76         std::exception_ptr exception_;\r
  77 \r
  78 public:\r
  79         decklink_producer(const core::video_format_desc& format_desc, size_t device_index, const std::shared_ptr<core::frame_factory>& frame_factory)\r
  80                 : decklink_(get_device(device_index))\r
  81                 , input_(decklink_)\r
  82                 , model_name_(get_model_name(decklink_))\r
  83                 , format_desc_(format_desc)\r
  84                 , device_index_(device_index)\r
  85                 , frame_factory_(frame_factory)\r
  86                 , tail_(core::basic_frame::empty())\r
  87         {\r
  88                 frame_buffer_.set_capacity(2);\r
  89                 \r
  90                 graph_ = diagnostics::create_graph(boost::bind(&decklink_producer::print, this));\r
  91                 graph_->add_guide("tick-time", 0.5);\r
  92                 graph_->set_color("tick-time", diagnostics::color(0.1f, 0.7f, 0.8f));\r
  93                 graph_->set_color("late-frame", diagnostics::color(0.6f, 0.3f, 0.3f));\r
  94                 graph_->set_color("dropped-frame", diagnostics::color(0.3f, 0.6f, 0.3f));\r
  95                 graph_->set_color("output-buffer", diagnostics::color(0.0f, 1.0f, 0.0f));\r
  96                 \r
  97                 auto display_mode = get_display_mode(input_, format_desc_.format, bmdFormat8BitYUV, bmdVideoInputFlagDefault);\r
  98                 \r
  99                 // NOTE: bmdFormat8BitARGB is currently not supported by any decklink card. (2011-05-08)\r
 100                 if(FAILED(input_->EnableVideoInput(display_mode, bmdFormat8BitYUV, 0))) \r
 101                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Could not enable video input."));\r
 102 \r
 103                 if(FAILED(input_->EnableAudioInput(bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, 2))) \r
 104                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Could not enable audio input."));\r
 105                         \r
 106                 if (FAILED(input_->SetCallback(this)) != S_OK)\r
 107                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to set input callback."));\r
 108                         \r
 109                 if(FAILED(input_->StartStreams()))\r
 110                         BOOST_THROW_EXCEPTION(caspar_exception() << msg_info(narrow(print()) + " Failed to start input stream."));\r
 111 \r
 112                 CASPAR_LOG(info) << print() << " successfully initialized decklink for " << format_desc_.name;\r
 113         }\r
 114 \r
 115         ~decklink_producer()\r
 116         {\r
 117                 if(input_ != nullptr) \r
 118                 {\r
 119                         input_->StopStreams();\r
 120                         input_->DisableVideoInput();\r
 121                 }\r
 122         }\r
 123 \r
 124         virtual HRESULT STDMETHODCALLTYPE       QueryInterface (REFIID, LPVOID*)        {return E_NOINTERFACE;}\r
 125         virtual ULONG STDMETHODCALLTYPE         AddRef ()                                                       {return 1;}\r
 126         virtual ULONG STDMETHODCALLTYPE         Release ()                                                      {return 1;}\r
 127                 \r
 128         virtual HRESULT STDMETHODCALLTYPE VideoInputFormatChanged(BMDVideoInputFormatChangedEvents /*notificationEvents*/, IDeckLinkDisplayMode* newDisplayMode, BMDDetectedVideoInputFormatFlags /*detectedSignalFlags*/)\r
 129         {\r
 130                 return S_OK;\r
 131         }\r
 132 \r
 133         virtual HRESULT STDMETHODCALLTYPE VideoInputFrameArrived(IDeckLinkVideoInputFrame* video, IDeckLinkAudioInputPacket* audio)\r
 134         {       \r
 135                 try\r
 136                 {\r
 137                         graph_->update_value("tick-time", perf_timer_.elapsed()*format_desc_.fps*0.5);\r
 138                         perf_timer_.restart();\r
 139                                                 \r
 140                         core::pixel_format_desc desc;\r
 141                         desc.pix_fmt = core::pixel_format::ycbcr;\r
 142                         desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width,   format_desc_.height, 1));\r
 143                         desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width/2, format_desc_.height, 1));\r
 144                         desc.planes.push_back(core::pixel_format_desc::plane(format_desc_.width/2, format_desc_.height, 1));                    \r
 145                         auto frame = frame_factory_->create_frame(this, desc);\r
 146                                                 \r
 147                         void* bytes = nullptr;\r
 148                         video->GetBytes(&bytes);\r
 149                         unsigned char* data = reinterpret_cast<unsigned char*>(bytes);\r
 150                         const size_t frame_size = (format_desc_.width * 16 / 8) * format_desc_.height;\r
 151 \r
 152                         // Convert to planar YUV422\r
 153                         unsigned char* y  = frame->image_data(0).begin();\r
 154                         unsigned char* cb = frame->image_data(1).begin();\r
 155                         unsigned char* cr = frame->image_data(2).begin();\r
 156                 \r
 157                         tbb::parallel_for(tbb::blocked_range<size_t>(0, frame_size/4), [&](const tbb::blocked_range<size_t>& r)\r
 158                         {\r
 159                                 for(auto n = r.begin(); n != r.end(); ++n)\r
 160                                 {\r
 161                                         cb[n]     = data[n*4+0];\r
 162                                         y [n*2+0] = data[n*4+1];\r
 163                                         cr[n]     = data[n*4+2];\r
 164                                         y [n*2+1] = data[n*4+3];\r
 165                                 }\r
 166                         });\r
 167 \r
 168                         // It is assumed that audio is always equal or ahead of video.\r
 169                         if(audio && SUCCEEDED(audio->GetBytes(&bytes)))\r
 170                         {\r
 171                                 const size_t audio_samples = static_cast<size_t>(48000.0 / format_desc_.fps);\r
 172                                 const size_t audio_nchannels = 2;\r
 173 \r
 174                                 auto sample_frame_count = audio->GetSampleFrameCount();\r
 175                                 auto audio_data = reinterpret_cast<short*>(bytes);\r
 176                                 audio_data_.insert(audio_data_.end(), audio_data, audio_data + sample_frame_count*2);\r
 177 \r
 178                                 if(audio_data_.size() > audio_samples*audio_nchannels)\r
 179                                 {\r
 180                                         frame->audio_data() = std::vector<short>(audio_data_.begin(), audio_data_.begin() +  audio_samples*audio_nchannels);\r
 181                                         audio_data_.erase(audio_data_.begin(), audio_data_.begin() +  audio_samples*audio_nchannels);\r
 182                                 }\r
 183                         }\r
 184 \r
 185                         if(!frame_buffer_.try_push(frame))\r
 186                                 graph_->add_tag("dropped-frame");\r
 187                         graph_->set_value("output-buffer", static_cast<float>(frame_buffer_.size())/static_cast<float>(frame_buffer_.capacity()));      \r
 188                 }\r
 189                 catch(...)\r
 190                 {\r
 191                         exception_ = std::current_exception();\r
 192                         return E_FAIL;\r
 193                 }\r
 194 \r
 195                 return S_OK;\r
 196         }\r
 197         \r
 198         safe_ptr<core::basic_frame> get_frame()\r
 199         {\r
 200                 if(exception_ != nullptr)\r
 201                         std::rethrow_exception(exception_);\r
 202 \r
 203                 if(!frame_buffer_.try_pop(tail_))\r
 204                         graph_->add_tag("late-frame");\r
 205                 graph_->set_value("output-buffer", static_cast<float>(frame_buffer_.size())/static_cast<float>(frame_buffer_.capacity()));      \r
 206                 return tail_;\r
 207         }\r
 208         \r
 209         std::wstring print() const\r
 210         {\r
 211                 return model_name_ + L" [" + boost::lexical_cast<std::wstring>(device_index_) + L"]";\r
 212         }\r
 213 };\r
 214         \r
 215 class decklink_producer_proxy : public core::frame_producer\r
 216 {               \r
 217         com_context<decklink_producer> context_;\r
 218 public:\r
 219 \r
 220         explicit decklink_producer_proxy(const safe_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, size_t device_index)\r
 221                 : context_(L"decklink_producer[" + boost::lexical_cast<std::wstring>(device_index) + L"]")\r
 222         {\r
 223                 context_.reset([&]{return new decklink_producer(format_desc, device_index, frame_factory);}); \r
 224         }\r
 225                                 \r
 226         virtual safe_ptr<core::basic_frame> receive()\r
 227         {\r
 228                 return context_->get_frame();\r
 229         }\r
 230         \r
 231         std::wstring print() const\r
 232         {\r
 233                 return context_->print();\r
 234         }\r
 235 };\r
 236 \r
 237 safe_ptr<core::frame_producer> create_decklink_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 238 {\r
 239         if(params.empty() || !boost::iequals(params[0], "decklink"))\r
 240                 return core::frame_producer::empty();\r
 241 \r
 242         size_t device_index = 1;\r
 243         if(params.size() > 1)\r
 244                 device_index = lexical_cast_or_default(params[1], 1);\r
 245 \r
 246         core::video_format_desc format_desc = core::video_format_desc::get(L"PAL");\r
 247         if(params.size() > 2)\r
 248         {\r
 249                 auto desc = core::video_format_desc::get(params[2]);\r
 250                 if(desc.format != core::video_format::invalid)\r
 251                         format_desc = desc;\r
 252         }\r
 253 \r
 254         return make_safe<decklink_producer_proxy>(frame_factory, format_desc, device_index);\r
 255 }\r
 256 \r
 257 }