git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/ffmpeg_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 #include "../stdafx.h"\r
  21 \r
  22 #include "ffmpeg_producer.h"\r
  23 \r
  24 #include "../ffmpeg_error.h"\r
  25 #include "muxer/frame_muxer.h"\r
  26 #include "input/input.h"\r
  27 #include "util/util.h"\r
  28 #include "audio/audio_decoder.h"\r
  29 #include "video/video_decoder.h"\r
  30 \r
  31 #include <common/env.h>\r
  32 #include <common/utility/assert.h>\r
  33 #include <common/diagnostics/graph.h>\r
  34 \r
  35 #include <core/video_format.h>\r
  36 #include <core/producer/frame_producer.h>\r
  37 #include <core/producer/frame/frame_factory.h>\r
  38 #include <core/producer/frame/basic_frame.h>\r
  39 #include <core/producer/frame/frame_transform.h>\r
  40 \r
  41 #include <boost/algorithm/string.hpp>\r
  42 #include <boost/assign.hpp>\r
  43 #include <boost/timer.hpp>\r
  44 #include <boost/foreach.hpp>\r
  45 #include <boost/filesystem.hpp>\r
  46 #include <boost/range/algorithm/find_if.hpp>\r
  47 #include <boost/range/algorithm/find.hpp>\r
  48 #include <boost/regex.hpp>\r
  49 \r
  50 #include <tbb/parallel_invoke.h>\r
  51 \r
  52 #include <limits>\r
  53 #include <memory>\r
  54 #include <queue>\r
  55 \r
  56 namespace caspar { namespace ffmpeg {\r
  57                                 \r
  58 struct ffmpeg_producer : public core::frame_producer\r
  59 {\r
  60         const std::wstring                                                              filename_;\r
  61         \r
  62         const safe_ptr<diagnostics::graph>                              graph_;\r
  63         boost::timer                                                                    frame_timer_;\r
  64         boost::timer                                                                    video_timer_;\r
  65         boost::timer                                                                    audio_timer_;\r
  66                                         \r
  67         const safe_ptr<core::frame_factory>                             frame_factory_;\r
  68         const core::video_format_desc                                   format_desc_;\r
  69 \r
  70         input                                                                                   input_; \r
  71         std::unique_ptr<video_decoder>                                  video_decoder_;\r
  72         std::unique_ptr<audio_decoder>                                  audio_decoder_; \r
  73         std::unique_ptr<frame_muxer>                                    muxer_;\r
  74 \r
  75         const int                                                                               start_;\r
  76         const bool                                                                              loop_;\r
  77         const size_t                                                                    length_;\r
  78 \r
  79         safe_ptr<core::basic_frame>                                             last_frame_;\r
  80         \r
  81         std::queue<safe_ptr<core::basic_frame>>                 frame_buffer_;\r
  82         \r
  83 public:\r
  84         explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, const std::wstring& filter, bool loop, int start, size_t length) \r
  85                 : filename_(filename)\r
  86                 , frame_factory_(frame_factory)         \r
  87                 , format_desc_(frame_factory->get_video_format_desc())\r
  88                 , input_(graph_, filename_, loop, start, length)\r
  89                 , start_(start)\r
  90                 , loop_(loop)\r
  91                 , length_(length)\r
  92                 , last_frame_(core::basic_frame::empty())\r
  93         {\r
  94                 graph_->add_guide("frame-time", 0.5);\r
  95                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
  96                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
  97                 diagnostics::register_graph(graph_);\r
  98                 \r
  99                 try\r
 100                 {\r
 101                         video_decoder_.reset(new video_decoder(input_.context()));\r
 102                 }\r
 103                 catch(averror_stream_not_found&)\r
 104                 {\r
 105                         CASPAR_LOG(warning) << "No video-stream found. Running without video."; \r
 106                 }\r
 107                 catch(...)\r
 108                 {\r
 109                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 110                         CASPAR_LOG(warning) << "Failed to open video-stream. Running without video.";   \r
 111                 }\r
 112 \r
 113                 try\r
 114                 {\r
 115                         audio_decoder_.reset(new audio_decoder(input_.context(), frame_factory->get_video_format_desc()));\r
 116                 }\r
 117                 catch(averror_stream_not_found&)\r
 118                 {\r
 119                         CASPAR_LOG(warning) << "No audio-stream found. Running without audio."; \r
 120                 }\r
 121                 catch(...)\r
 122                 {\r
 123                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 124                         CASPAR_LOG(warning) << "Failed to open audio-stream. Running without audio.";           \r
 125                 }       \r
 126 \r
 127                 muxer_.reset(new frame_muxer(video_decoder_ ? video_decoder_->fps() : frame_factory->get_video_format_desc().fps, frame_factory, filter));\r
 128         }\r
 129         \r
 130         virtual safe_ptr<core::basic_frame> receive(int hints)\r
 131         {               \r
 132                 frame_timer_.restart();\r
 133                 \r
 134                 for(int n = 0; n < 32 && frame_buffer_.size() < 2; ++n)\r
 135                         try_decode_frame(hints);\r
 136                 \r
 137                 graph_->update_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);\r
 138                                 \r
 139                 if(frame_buffer_.empty() && input_.eof())\r
 140                         return core::basic_frame::eof();\r
 141 \r
 142                 if(frame_buffer_.empty())\r
 143                 {\r
 144                         graph_->add_tag("underflow");   \r
 145                         return core::basic_frame::late();                       \r
 146                 }\r
 147                 \r
 148                 last_frame_ = frame_buffer_.front();    \r
 149                 frame_buffer_.pop();\r
 150 \r
 151                 graph_->set_text(print());\r
 152 \r
 153                 return last_frame_;\r
 154         }\r
 155 \r
 156         virtual safe_ptr<core::basic_frame> last_frame() const\r
 157         {\r
 158                 return disable_audio(last_frame_);\r
 159         }\r
 160         \r
 161         void try_decode_frame(int hints)\r
 162         {\r
 163                 std::shared_ptr<AVPacket> pkt;\r
 164 \r
 165                 for(int n = 0; n < 32 && ((video_decoder_ && !video_decoder_->ready()) || (audio_decoder_ && !audio_decoder_->ready())) && input_.try_pop(pkt); ++n)\r
 166                 {\r
 167                         if(video_decoder_)\r
 168                                 video_decoder_->push(pkt);\r
 169                         if(audio_decoder_)\r
 170                                 audio_decoder_->push(pkt);\r
 171                 }\r
 172                 \r
 173                 std::shared_ptr<AVFrame>                        video;\r
 174                 std::shared_ptr<core::audio_buffer> audio;\r
 175 \r
 176                 tbb::parallel_invoke(\r
 177                 [&]\r
 178                 {\r
 179                         if(!muxer_->video_ready() && video_decoder_)                    \r
 180                                 video = video_decoder_->poll();                 \r
 181                 },\r
 182                 [&]\r
 183                 {               \r
 184                         if(!muxer_->audio_ready() && audio_decoder_)                    \r
 185                                 audio = audio_decoder_->poll();                 \r
 186                 });\r
 187 \r
 188                 muxer_->push(video, hints);\r
 189                 muxer_->push(audio);\r
 190 \r
 191                 if(!audio_decoder_)\r
 192                 {\r
 193                         if(video == flush_video())\r
 194                                 muxer_->push(flush_audio());\r
 195                         else if(!muxer_->audio_ready())\r
 196                                 muxer_->push(empty_audio());\r
 197                 }\r
 198 \r
 199                 if(!video_decoder_)\r
 200                 {\r
 201                         if(audio == flush_audio())\r
 202                                 muxer_->push(flush_video(), 0);\r
 203                         else if(!muxer_->video_ready())\r
 204                                 muxer_->push(empty_video(), 0);\r
 205                 }\r
 206                 \r
 207                 for(auto frame = muxer_->poll(); frame; frame = muxer_->poll())\r
 208                         frame_buffer_.push(make_safe_ptr(frame));\r
 209         }\r
 210 \r
 211         virtual int64_t nb_frames() const \r
 212         {\r
 213                 if(loop_)\r
 214                         return std::numeric_limits<int64_t>::max();\r
 215 \r
 216                 // This function estimates nb_frames until input has read all packets for one loop, at which point the count should be accurate.\r
 217 \r
 218                 int64_t nb_frames = input_.nb_frames();\r
 219                 if(input_.nb_loops() < 1) // input still hasn't counted all frames\r
 220                 {\r
 221                         auto video_nb_frames = video_decoder_ ? video_decoder_->nb_frames() : std::numeric_limits<int64_t>::max();\r
 222                         auto audio_nb_frames = audio_decoder_ ? audio_decoder_->nb_frames() : std::numeric_limits<int64_t>::max();\r
 223 \r
 224                         nb_frames = std::max(nb_frames, std::max(video_nb_frames, audio_nb_frames));\r
 225                 }\r
 226 \r
 227                 nb_frames = std::min(static_cast<int64_t>(length_), nb_frames);\r
 228                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 229 \r
 230                 // TODO: Might need to scale nb_frames av frame_muxer transformations.\r
 231 \r
 232                 return nb_frames - start_;\r
 233         }\r
 234 \r
 235         virtual std::wstring param(const std::wstring& param)\r
 236         {\r
 237                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)");\r
 238                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)");\r
 239                 \r
 240                 boost::wsmatch what;\r
 241                 if(boost::regex_match(param, what, loop_exp))\r
 242                 {\r
 243                         if(!what["VALUE"].str().empty())\r
 244                                 input_.loop(boost::lexical_cast<bool>(what["VALUE"].str()));\r
 245                         return boost::lexical_cast<std::wstring>(input_.loop());\r
 246                 }\r
 247                 if(boost::regex_match(param, what, seek_exp))\r
 248                 {\r
 249                         input_.seek(boost::lexical_cast<int64_t>(what["VALUE"].str()));\r
 250                         return L"";\r
 251                 }\r
 252 \r
 253                 BOOST_THROW_EXCEPTION(invalid_argument());\r
 254         }\r
 255                                 \r
 256         virtual std::wstring print() const\r
 257         {\r
 258                 if(video_decoder_)\r
 259                 {\r
 260                         return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 261                                                           + boost::lexical_cast<std::wstring>(video_decoder_->width()) + L"x" + boost::lexical_cast<std::wstring>(video_decoder_->height())\r
 262                                                           + (video_decoder_->is_progressive() ? L"p" : L"i")  + boost::lexical_cast<std::wstring>(video_decoder_->is_progressive() ? video_decoder_->fps() : 2.0 * video_decoder_->fps())\r
 263                                                           + L"]";\r
 264                 }\r
 265                 \r
 266                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 267         }\r
 268 };\r
 269 \r
 270 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 271 {               \r
 272         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 273                 (L"mpg")(L"mpeg")(L"m2v")(L"m4v")(L"mp3")(L"mp4")(L"mpga")\r
 274                 (L"avi")\r
 275                 (L"mov")\r
 276                 (L"qt")\r
 277                 (L"webm")\r
 278                 (L"dv")         \r
 279                 (L"f4v")(L"flv")\r
 280                 (L"mkv")(L"mka")\r
 281                 (L"wmv")(L"wma")(L"wav")\r
 282                 (L"rm")(L"ram")\r
 283                 (L"ogg")(L"ogv")(L"oga")(L"ogx")\r
 284                 (L"divx")(L"xvid");\r
 285 \r
 286         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 287         \r
 288         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 289         {                                       \r
 290                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 291         });\r
 292 \r
 293         if(ext == extensions.end())\r
 294                 return core::frame_producer::empty();\r
 295 \r
 296         auto path               = filename + L"." + *ext;\r
 297         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 298         auto start              = core::get_param(L"SEEK", params, 0);\r
 299         auto length             = core::get_param(L"LENGTH", params, std::numeric_limits<size_t>::max());\r
 300         auto filter_str = core::get_param<std::wstring>(L"FILTER", params, L"");        \r
 301                 \r
 302         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 303         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 304         \r
 305         return create_destroy_proxy(make_safe<ffmpeg_producer>(frame_factory, path, filter_str, loop, start, length));\r
 306 }\r
 307 \r
 308 }}