git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/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 <common/utility/timer.h>\r
  10 #include <common/diagnostics/graph.h>\r
  11 \r
  12 #include <core/producer/frame/basic_frame.h>\r
  13 #include <core/producer/frame/write_frame.h>\r
  14 #include <core/producer/frame/audio_transform.h>\r
  15 #include <core/video_format.h>\r
  16 \r
  17 #include <common/env.h>\r
  18 #include <common/utility/timer.h>\r
  19 #include <common/utility/assert.h>\r
  20 \r
  21 #include <tbb/parallel_invoke.h>\r
  22 \r
  23 #include <deque>\r
  24 #include <functional>\r
  25 \r
  26 namespace caspar {\r
  27         \r
  28 struct ffmpeg_producer : public core::frame_producer\r
  29 {\r
  30         const std::wstring                                      filename_;\r
  31         const bool                                                      loop_;\r
  32         printer                                                         parent_printer_;\r
  33         \r
  34         std::shared_ptr<diagnostics::graph>     graph_;\r
  35         timer                                                           perf_timer_;\r
  36                 \r
  37         std::unique_ptr<audio_decoder>          audio_decoder_;\r
  38         std::unique_ptr<video_decoder>          video_decoder_;\r
  39 \r
  40         std::deque<safe_ptr<core::write_frame>> video_frame_channel_;   \r
  41         std::deque<std::vector<short>>                  audio_chunk_channel_;\r
  42 \r
  43         std::queue<safe_ptr<core::basic_frame>> ouput_channel_;\r
  44                 \r
  45         safe_ptr<core::basic_frame>                             last_frame_;\r
  46         std::shared_ptr<core::frame_factory>    frame_factory_;\r
  47 \r
  48         std::unique_ptr<input>                          input_; \r
  49 public:\r
  50         explicit ffmpeg_producer(const std::wstring& filename, bool loop) \r
  51                 : filename_(filename)\r
  52                 , loop_(loop) \r
  53                 , last_frame_(core::basic_frame(core::basic_frame::empty()))\r
  54                 \r
  55         {\r
  56                 graph_ = diagnostics::create_graph(boost::bind(&ffmpeg_producer::print, this)); \r
  57                 graph_->add_guide("frame-time", 0.5);\r
  58                 graph_->set_color("frame-time",  diagnostics::color(1.0f, 0.0f, 0.0f));\r
  59         }\r
  60         \r
  61         virtual void initialize(const safe_ptr<core::frame_factory>& frame_factory)\r
  62         {\r
  63                 frame_factory_ = frame_factory;\r
  64                 input_.reset(new input(safe_ptr<diagnostics::graph>(graph_), filename_, loop_, std::bind(&ffmpeg_producer::print, this)));\r
  65                 video_decoder_.reset(input_->get_video_codec_context().get() ? new video_decoder(input_->get_video_codec_context().get(), frame_factory) : nullptr);\r
  66                 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
  67 \r
  68                 double frame_time = 1.0f/input_->fps();\r
  69                 double format_frame_time = 1.0/frame_factory->get_video_format_desc().fps;\r
  70                 if(abs(frame_time - format_frame_time) > 0.0001)\r
  71                         CASPAR_LOG(warning) << print() << L" Invalid framerate detected. This may cause distorted audio during playback. frame-time: " << frame_time;\r
  72 \r
  73         }\r
  74                 \r
  75         virtual void set_parent_printer(const printer& parent_printer) \r
  76         {\r
  77                 parent_printer_ = parent_printer;\r
  78         }\r
  79 \r
  80         virtual safe_ptr<core::basic_frame> receive()\r
  81         {\r
  82                 perf_timer_.reset();\r
  83 \r
  84                 while(ouput_channel_.size() < 2 && !input_->is_eof())\r
  85                 {       \r
  86                         aligned_buffer video_packet;\r
  87                         if(video_frame_channel_.size() < 3 && video_decoder_)   \r
  88                                 video_packet = input_->get_video_packet();              \r
  89                         \r
  90                         aligned_buffer audio_packet;\r
  91                         if(audio_chunk_channel_.size() < 3 && audio_decoder_)   \r
  92                                 audio_packet = input_->get_audio_packet();              \r
  93 \r
  94                         tbb::parallel_invoke(\r
  95                         [&]\r
  96                         { // Video Decoding and Scaling\r
  97                                 if(!video_packet.empty() && video_decoder_)\r
  98                                 {\r
  99                                         try\r
 100                                         {\r
 101                                                 auto frame = video_decoder_->execute(video_packet);\r
 102                                                 frame->tag(reinterpret_cast<int>(this));\r
 103                                                 video_frame_channel_.push_back(std::move(frame));\r
 104                                         }\r
 105                                         catch(...)\r
 106                                         {\r
 107                                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 108                                                 video_decoder_.reset();\r
 109                                                 CASPAR_LOG(warning) << print() << " removed video-stream.";\r
 110                                         }\r
 111                                 }\r
 112                         }, \r
 113                         [&] \r
 114                         { // Audio Decoding\r
 115                                 if(!audio_packet.empty() && audio_decoder_)\r
 116                                 {\r
 117                                         try\r
 118                                         {\r
 119                                                 auto chunks = audio_decoder_->execute(audio_packet);\r
 120                                                 audio_chunk_channel_.insert(audio_chunk_channel_.end(), chunks.begin(), chunks.end());\r
 121                                         }\r
 122                                         catch(...)\r
 123                                         {\r
 124                                                 CASPAR_LOG_CURRENT_EXCEPTION();\r
 125                                                 audio_decoder_.reset();\r
 126                                                 CASPAR_LOG(warning) << print() << " removed audio-stream.";\r
 127                                         }\r
 128                                 }\r
 129                         });\r
 130 \r
 131                         while((!video_frame_channel_.empty() || !video_decoder_) && (!audio_chunk_channel_.empty() || !audio_decoder_))\r
 132                         {\r
 133                                 std::shared_ptr<core::write_frame> frame;\r
 134 \r
 135                                 if(video_decoder_)\r
 136                                 {\r
 137                                         frame = video_frame_channel_.front();\r
 138                                         video_frame_channel_.pop_front();\r
 139                                 }\r
 140 \r
 141                                 if(audio_decoder_) \r
 142                                 {\r
 143                                         if(!frame)\r
 144                                         {\r
 145                                                 frame = frame_factory_->create_frame(1, 1);\r
 146                                                 std::fill(frame->image_data().begin(), frame->image_data().end(), 0);\r
 147                                         }\r
 148                                         \r
 149                                         frame->audio_data() = std::move(audio_chunk_channel_.front());\r
 150                                         audio_chunk_channel_.pop_front();\r
 151                                 }\r
 152                                                         \r
 153                                 ouput_channel_.push(safe_ptr<core::write_frame>(frame));                                \r
 154                         }                               \r
 155 \r
 156                         if(ouput_channel_.empty() && video_packet.empty() && audio_packet.empty())                      \r
 157                                 return last_frame_;                     \r
 158                 }\r
 159                 \r
 160                 graph_->update_value("frame-time", static_cast<float>(perf_timer_.elapsed()/frame_factory_->get_video_format_desc().interval*0.5));\r
 161 \r
 162                 auto result = last_frame_;\r
 163                 if(!ouput_channel_.empty())\r
 164                 {\r
 165                         result = get_frame();\r
 166 \r
 167                         bool interlace = abs(input_->fps()/2.0 - frame_factory_->get_video_format_desc().fps) < 0.001;\r
 168                         if(interlace && !ouput_channel_.empty())\r
 169                                 result = core::basic_frame::interlace(result, get_frame(), frame_factory_->get_video_format_desc().mode);\r
 170                 }\r
 171                 else if(input_->is_eof())\r
 172                         result = core::basic_frame::eof();\r
 173                 \r
 174                 return result;\r
 175         }\r
 176 \r
 177         core::basic_frame get_frame()\r
 178         {\r
 179                 CASPAR_ASSERT(!ouput_channel_.empty());\r
 180                 auto result = std::move(ouput_channel_.front());\r
 181                 last_frame_ = core::basic_frame(result);\r
 182                 last_frame_->get_audio_transform().set_gain(0.0); // last_frame should not have audio\r
 183                 ouput_channel_.pop();\r
 184                 return result;\r
 185         }\r
 186 \r
 187         virtual std::wstring print() const\r
 188         {\r
 189                 return (parent_printer_ ? parent_printer_() + L"/" : L"") + L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 190         }\r
 191 };\r
 192 \r
 193 safe_ptr<core::frame_producer> create_ffmpeg_producer(const std::vector<std::wstring>& params)\r
 194 {                       \r
 195         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 196                 (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
 197         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 198         \r
 199         auto ext = std::find_if(extensions.begin(), extensions.end(), [&](const std::wstring& ex) -> bool\r
 200                 {                                       \r
 201                         return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename).replace_extension(ex));\r
 202                 });\r
 203 \r
 204         if(ext == extensions.end())\r
 205                 return core::frame_producer::empty();\r
 206 \r
 207         std::wstring path = filename + L"." + *ext;\r
 208         bool loop = std::find(params.begin(), params.end(), L"LOOP") != params.end();\r
 209         \r
 210         return make_safe<ffmpeg_producer>(path, loop);\r
 211 }\r
 212 \r
 213 }