git.sesse.net Git - casparcg/blob - core/producer/ffmpeg/ffmpeg_producer.cpp

   1 #include "../../stdafx.h"\r
   2 \r
   3 #include "ffmpeg_producer.h"\r
   4 \r
   5 #include "input.h"\r
   6 #include "audio/audio_decoder.h"\r
   7 #include "video/video_decoder.h"\r
   8 \r
   9 #include <core/video_format.h>\r
  10 #include <common/utility/timer.h>\r
  11 #include <common/diagnostics/graph.h>\r
  12 #include <mixer/frame/draw_frame.h>\r
  13 #include <mixer/audio/audio_transform.h>\r
  14 \r
  15 #include <common/env.h>\r
  16 \r
  17 #include <tbb/parallel_invoke.h>\r
  18 \r
  19 #include <deque>\r
  20 #include <functional>\r
  21 \r
  22 namespace caspar { namespace core { namespace ffmpeg{\r
  23         \r
  24 struct ffmpeg_producer : public frame_producer\r
  25 {\r
  26         const std::wstring                                      filename_;\r
  27         const bool                                                      loop_;\r
  28         printer                                                         parent_printer_;\r
  29         \r
  30         std::shared_ptr<diagnostics::graph>     graph_;\r
  31         timer                                                           perf_timer_;\r
  32                 \r
  33         std::unique_ptr<audio_decoder>          audio_decoder_;\r
  34         std::unique_ptr<video_decoder>          video_decoder_;\r
  35 \r
  36         std::deque<safe_ptr<write_frame>>       video_frame_channel_;   \r
  37         std::deque<std::vector<short>>          audio_chunk_channel_;\r
  38 \r
  39         std::queue<safe_ptr<draw_frame>>        ouput_channel_;\r
  40                 \r
  41         safe_ptr<draw_frame>                            last_frame_;\r
  42         std::shared_ptr<frame_factory>          frame_factory_;\r
  43 \r
  44         std::unique_ptr<input>                          input_; \r
  45 public:\r
  46         explicit ffmpeg_producer(const std::wstring& filename, bool loop) \r
  47                 : filename_(filename)\r
  48                 , loop_(loop) \r
  49                 , last_frame_(draw_frame(draw_frame::empty()))\r
  50                 \r
  51         {\r
  52                 graph_ = diagnostics::create_graph(boost::bind(&ffmpeg_producer::print, this)); \r
  53                 graph_->add_guide("frame-time", 0.5);\r
  54                 graph_->set_color("frame-time",  diagnostics::color(1.0f, 0.0f, 0.0f));\r
  55         }\r
  56         \r
  57         virtual void initialize(const safe_ptr<frame_factory>& frame_factory)\r
  58         {\r
  59                 frame_factory_ = frame_factory;\r
  60                 input_.reset(new input(safe_ptr<diagnostics::graph>(graph_), filename_, loop_, std::bind(&ffmpeg_producer::print, this)));\r
  61                 video_decoder_.reset(input_->get_video_codec_context().get() ? new video_decoder(input_->get_video_codec_context().get(), frame_factory) : nullptr);\r
  62                 audio_decoder_.reset(input_->get_audio_codec_context().get() ? new audio_decoder(input_->get_audio_codec_context().get(), frame_factory->get_video_format_desc().fps) : nullptr);\r
  63         }\r
  64                 \r
  65         virtual void set_parent_printer(const printer& parent_printer) \r
  66         {\r
  67                 parent_printer_ = parent_printer;\r
  68         }\r
  69 \r
  70         virtual safe_ptr<draw_frame> receive()\r
  71         {\r
  72                 perf_timer_.reset();\r
  73 \r
  74                 while(ouput_channel_.empty() && !input_->is_eof())\r
  75                 {       \r
  76                         aligned_buffer video_packet;\r
  77                         if(video_frame_channel_.size() < 3 && video_decoder_)   \r
  78                                 video_packet = input_->get_video_packet();              \r
  79                         \r
  80                         aligned_buffer audio_packet;\r
  81                         if(audio_chunk_channel_.size() < 3 && audio_decoder_)   \r
  82                                 audio_packet = input_->get_audio_packet();              \r
  83 \r
  84                         tbb::parallel_invoke(\r
  85                         [&]\r
  86                         { // Video Decoding and Scaling\r
  87                                 if(!video_packet.empty() && video_decoder_)\r
  88                                 {\r
  89                                         try\r
  90                                         {\r
  91                                                 auto frame = video_decoder_->execute(video_packet);\r
  92                                                 frame->tag(reinterpret_cast<int>(this));\r
  93                                                 video_frame_channel_.push_back(std::move(frame));\r
  94                                         }\r
  95                                         catch(...)\r
  96                                         {\r
  97                                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
  98                                                 video_decoder_.reset();\r
  99                                                 CASPAR_LOG(warning) << print() << " removed video-stream.";\r
 100                                         }\r
 101                                 }\r
 102                         }, \r
 103                         [&] \r
 104                         { // Audio Decoding\r
 105                                 if(!audio_packet.empty() && audio_decoder_)\r
 106                                 {\r
 107                                         try\r
 108                                         {\r
 109                                                 auto chunks = audio_decoder_->execute(audio_packet);\r
 110                                                 audio_chunk_channel_.insert(audio_chunk_channel_.end(), chunks.begin(), chunks.end());\r
 111                                         }\r
 112                                         catch(...)\r
 113                                         {\r
 114                                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 115                                                 audio_decoder_.reset();\r
 116                                                 CASPAR_LOG(warning) << print() << " removed audio-stream.";\r
 117                                         }\r
 118                                 }\r
 119                         });\r
 120 \r
 121                         while((!video_frame_channel_.empty() || !video_decoder_) && (!audio_chunk_channel_.empty() || !audio_decoder_))\r
 122                         {\r
 123                                 std::shared_ptr<write_frame> frame;\r
 124 \r
 125                                 if(video_decoder_)\r
 126                                 {\r
 127                                         frame = video_frame_channel_.front();\r
 128                                         video_frame_channel_.pop_front();\r
 129                                 }\r
 130 \r
 131                                 if(audio_decoder_) \r
 132                                 {\r
 133                                         if(!frame)\r
 134                                         {\r
 135                                                 frame = frame_factory_->create_frame(1, 1);\r
 136                                                 std::fill(frame->image_data().begin(), frame->image_data().end(), 0);\r
 137                                         }\r
 138                                         \r
 139                                         frame->audio_data() = std::move(audio_chunk_channel_.front());\r
 140                                         audio_chunk_channel_.pop_front();\r
 141                                 }\r
 142                                                         \r
 143                                 ouput_channel_.push(safe_ptr<write_frame>(frame));                              \r
 144                         }                               \r
 145 \r
 146                         if(ouput_channel_.empty() && video_packet.empty() && audio_packet.empty())                      \r
 147                                 return last_frame_;                     \r
 148                 }\r
 149                 \r
 150                 graph_->update_value("frame-time", static_cast<float>(perf_timer_.elapsed()/frame_factory_->get_video_format_desc().interval*0.5));\r
 151 \r
 152                 auto result = last_frame_;\r
 153                 if(!ouput_channel_.empty())\r
 154                 {\r
 155                         result = std::move(ouput_channel_.front());\r
 156                         last_frame_ = draw_frame(result);\r
 157                         last_frame_->get_audio_transform().set_gain(0.0); // last_frame should not have audio\r
 158                         ouput_channel_.pop();\r
 159                 }\r
 160                 else if(input_->is_eof())\r
 161                         return draw_frame::eof();\r
 162 \r
 163                 return result;\r
 164         }\r
 165 \r
 166         virtual std::wstring print() const\r
 167         {\r
 168                 return (parent_printer_ ? parent_printer_() + L"/" : L"") + L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 169         }\r
 170 };\r
 171 \r
 172 safe_ptr<frame_producer> create_ffmpeg_producer(const std::vector<std::wstring>& params)\r
 173 {                       \r
 174         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 175                 (L"mpg")(L"mpeg")(L"avi")(L"mov")(L"qt")(L"webm")(L"dv")(L"mp4")(L"f4v")(L"flv")(L"mkv")(L"mka")(L"wmw")(L"wma")(L"ogg")(L"divx")(L"wav")(L"mp3");\r
 176         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 177         \r
 178         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 179                 {                                       \r
 180                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 181                 });\r
 182 \r
 183         if(ext == extensions.end())\r
 184                 return frame_producer::empty();\r
 185 \r
 186         std::wstring path = filename + L"." + *ext;\r
 187         bool loop = std::find(params.begin(), params.end(), L"LOOP") != params.end();\r
 188         \r
 189         return make_safe<ffmpeg_producer>(path, loop);\r
 190 }\r
 191 \r
 192 }}}