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 "frame_muxer.h"\r
  25 #include "input.h"\r
  26 #include "util.h"\r
  27 #include "audio/audio_decoder.h"\r
  28 #include "video/video_decoder.h"\r
  29 #include "../ffmpeg_error.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 \r
  40 #include <boost/algorithm/string.hpp>\r
  41 #include <boost/assign.hpp>\r
  42 #include <boost/timer.hpp>\r
  43 #include <boost/foreach.hpp>\r
  44 #include <boost/filesystem.hpp>\r
  45 #include <boost/range/algorithm/find_if.hpp>\r
  46 #include <boost/range/algorithm/find.hpp>\r
  47 \r
  48 #include <agents.h>\r
  49 \r
  50 using namespace Concurrency;\r
  51 \r
  52 namespace caspar { namespace ffmpeg {\r
  53                 \r
  54 struct ffmpeg_producer : public core::frame_producer\r
  55 {       \r
  56         const std::wstring                                                                                              filename_;\r
  57         const int                                                                                                               start_;\r
  58         const bool                                                                                                              loop_;\r
  59         const size_t                                                                                                    length_;\r
  60         \r
  61         call<input::target_element_t>                                                                   throw_away_;\r
  62         unbounded_buffer<input::target_element_t>                                               packets_;\r
  63         std::shared_ptr<unbounded_buffer<frame_muxer2::video_source_element_t>> video_;\r
  64         std::shared_ptr<unbounded_buffer<frame_muxer2::audio_source_element_t>> audio_;\r
  65         unbounded_buffer<frame_muxer2::target_element_t>                                frames_;\r
  66                 \r
  67         const safe_ptr<diagnostics::graph>                                                              graph_;\r
  68                                         \r
  69         input                                                                                                                   input_; \r
  70         std::unique_ptr<frame_muxer2>                                                                   muxer_;\r
  71         std::shared_ptr<video_decoder>                                                                  video_decoder_;\r
  72         std::shared_ptr<audio_decoder>                                                                  audio_decoder_; \r
  73 \r
  74         safe_ptr<core::basic_frame>                                                                             last_frame_;\r
  75         \r
  76 public:\r
  77         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
  78                 : filename_(filename)\r
  79                 , start_(start)\r
  80                 , loop_(loop)\r
  81                 , length_(length)\r
  82                 , throw_away_([](const input::target_element_t&){})\r
  83                 , graph_(diagnostics::create_graph("", false))\r
  84                 , input_(packets_, graph_, filename_, loop, start, length)\r
  85                 , last_frame_(core::basic_frame::empty())\r
  86         {               \r
  87                 try\r
  88                 {\r
  89                         auto video = std::make_shared<unbounded_buffer<frame_muxer2::video_source_element_t>>();\r
  90                         video_decoder_.reset(new video_decoder(packets_, *video, *input_.context()));\r
  91                         video_ = video;\r
  92                 }\r
  93                 catch(averror_stream_not_found&)\r
  94                 {\r
  95                         CASPAR_LOG(warning) << "No video-stream found. Running without video."; \r
  96                 }\r
  97                 catch(...)\r
  98                 {\r
  99                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 100                         CASPAR_LOG(warning) << "Failed to open video-stream. Running without video.";   \r
 101                 }\r
 102 \r
 103                 try\r
 104                 {\r
 105                         auto audio = std::make_shared<unbounded_buffer<frame_muxer2::audio_source_element_t>>();\r
 106                         audio_decoder_.reset(new audio_decoder(packets_, *audio, *input_.context(), frame_factory->get_video_format_desc()));\r
 107                         audio_ = audio;\r
 108                 }\r
 109                 catch(averror_stream_not_found&)\r
 110                 {\r
 111                         CASPAR_LOG(warning) << "No audio-stream found. Running without video."; \r
 112                 }\r
 113                 catch(...)\r
 114                 {\r
 115                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 116                         CASPAR_LOG(warning) << "Failed to open audio-stream. Running without audio.";           \r
 117                 }               \r
 118 \r
 119                 CASPAR_VERIFY(video_decoder_ || audio_decoder_, ffmpeg_error());\r
 120                 \r
 121                 packets_.link_target(&throw_away_);\r
 122                 muxer_.reset(new frame_muxer2(video_.get(), audio_.get(), frames_, video_decoder_ ? video_decoder_->fps() : frame_factory->get_video_format_desc().fps, frame_factory));\r
 123                                 \r
 124                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 125                 graph_->start();\r
 126 \r
 127                 input_.start();\r
 128         }\r
 129 \r
 130         ~ffmpeg_producer()\r
 131         {\r
 132                 input_.stop();  \r
 133         }\r
 134                                                 \r
 135         virtual safe_ptr<core::basic_frame> receive(int hints)\r
 136         {\r
 137                 auto frame = core::basic_frame::late();\r
 138                 \r
 139                 try\r
 140                 {               \r
 141                         auto frame_element = Concurrency::receive(frames_, 10);\r
 142                         frame = last_frame_ = frame_element.first;\r
 143                         graph_->update_text(narrow(print()));\r
 144                 }\r
 145                 catch(operation_timed_out&)\r
 146                 {               \r
 147                         graph_->add_tag("underflow");   \r
 148                 }\r
 149 \r
 150                 return frame;\r
 151         }\r
 152 \r
 153         virtual safe_ptr<core::basic_frame> last_frame() const\r
 154         {\r
 155                 return disable_audio(last_frame_);\r
 156         }\r
 157         \r
 158         virtual int64_t nb_frames() const\r
 159         {\r
 160                 if(loop_)\r
 161                         return std::numeric_limits<int64_t>::max();\r
 162 \r
 163                 // This function estimates nb_frames until input has read all packets for one loop, at which point the count should be accurate.\r
 164 \r
 165                 int64_t nb_frames = input_.nb_frames();\r
 166                 if(input_.nb_loops() < 1) // input still hasn't counted all frames\r
 167                 {\r
 168                         int64_t video_nb_frames = video_decoder_->nb_frames();\r
 169                         int64_t audio_nb_frames = audio_decoder_->nb_frames();\r
 170 \r
 171                         nb_frames = std::min(static_cast<int64_t>(length_), std::max(nb_frames, std::max(video_nb_frames, audio_nb_frames)));\r
 172                 }\r
 173 \r
 174                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 175                 \r
 176                 return nb_frames - start_;\r
 177         }\r
 178                                 \r
 179         virtual std::wstring print() const\r
 180         {\r
 181                 if(video_decoder_)\r
 182                 {\r
 183                         return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 184                                                           + boost::lexical_cast<std::wstring>(video_decoder_->width()) + L"x" + boost::lexical_cast<std::wstring>(video_decoder_->height())\r
 185                                                           + (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
 186                                                           + L"]";\r
 187                 }\r
 188                 \r
 189                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 190         }\r
 191 };\r
 192 \r
 193 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, 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"m2v")(L"m4v")(L"mp3")(L"mp4")(L"mpga")\r
 197                 (L"avi")\r
 198                 (L"mov")\r
 199                 (L"qt")\r
 200                 (L"webm")\r
 201                 (L"dv")         \r
 202                 (L"f4v")(L"flv")\r
 203                 (L"mkv")(L"mka")\r
 204                 (L"wmv")(L"wma")(L"wav")\r
 205                 (L"rm")(L"ram")\r
 206                 (L"ogg")(L"ogv")(L"oga")(L"ogx")\r
 207                 (L"divx")(L"xvid");\r
 208 \r
 209         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 210         \r
 211         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 212         {                                       \r
 213                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 214         });\r
 215 \r
 216         if(ext == extensions.end())\r
 217                 return core::frame_producer::empty();\r
 218 \r
 219         auto path               = filename + L"." + *ext;\r
 220         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 221         auto start              = core::get_param(L"SEEK", params, 0);\r
 222         auto length             = core::get_param(L"LENGTH", params, std::numeric_limits<size_t>::max());\r
 223         auto filter_str = core::get_param<std::wstring>(L"FILTER", params, L"");        \r
 224                 \r
 225         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 226         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 227         \r
 228         return make_safe<ffmpeg_producer>(frame_factory, path, filter_str, loop, start, length);\r
 229 }\r
 230 \r
 231 }}