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 #include <concrt.h>\r
  50 \r
  51 #include <vector>\r
  52 #include <string>\r
  53 \r
  54 using namespace Concurrency;\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         const int                                                                                                                               start_;\r
  62         const bool                                                                                                                              loop_;\r
  63         const size_t                                                                                                                    length_;\r
  64         \r
  65         call<input::target_element_t>                                                                                   throw_away_packets_;\r
  66         call<frame_muxer2::target_element_t>                                                                    throw_away_frames_;\r
  67         unbounded_buffer<input::target_element_t>                                                               packets_;\r
  68         std::shared_ptr<unbounded_buffer<frame_muxer2::video_source_element_t>> video_;\r
  69         std::shared_ptr<unbounded_buffer<frame_muxer2::audio_source_element_t>> audio_;\r
  70         unbounded_buffer<frame_muxer2::target_element_t>                                                frames_;\r
  71                 \r
  72         const safe_ptr<diagnostics::graph>                                                                              graph_;\r
  73                                         \r
  74         input                                                                                                                                   input_; \r
  75         std::unique_ptr<video_decoder>                                                                                  video_decoder_;\r
  76         std::unique_ptr<audio_decoder>                                                                                  audio_decoder_; \r
  77         std::unique_ptr<frame_muxer2>                                                                                   muxer_;\r
  78 \r
  79         safe_ptr<core::basic_frame>                                                                                             last_frame_;\r
  80         \r
  81 public:\r
  82         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
  83                 : filename_(filename)\r
  84                 , start_(start)\r
  85                 , loop_(loop)\r
  86                 , length_(length)\r
  87                 , throw_away_packets_([](const input::target_element_t&){})\r
  88                 , throw_away_frames_([](const frame_muxer2::target_element_t&){})\r
  89                 , input_(packets_, graph_, filename_, loop, start, length)\r
  90                 , last_frame_(core::basic_frame::empty())\r
  91         {               \r
  92                 try\r
  93                 {\r
  94                         auto video = std::make_shared<unbounded_buffer<frame_muxer2::video_source_element_t>>();\r
  95                         video_decoder_.reset(new video_decoder(packets_, *video, *input_.context()));\r
  96                         video_ = video;\r
  97                 }\r
  98                 catch(averror_stream_not_found&)\r
  99                 {\r
 100                         CASPAR_LOG(warning) << "No video-stream found. Running without video."; \r
 101                 }\r
 102                 catch(...)\r
 103                 {\r
 104                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 105                         CASPAR_LOG(warning) << "Failed to open video-stream. Running without video.";   \r
 106                 }\r
 107 \r
 108                 try\r
 109                 {\r
 110                         auto audio = std::make_shared<unbounded_buffer<frame_muxer2::audio_source_element_t>>();\r
 111                         audio_decoder_.reset(new audio_decoder(packets_, *audio, *input_.context(), frame_factory->get_video_format_desc()));\r
 112                         audio_ = audio;\r
 113                 }\r
 114                 catch(averror_stream_not_found&)\r
 115                 {\r
 116                         CASPAR_LOG(warning) << "No audio-stream found. Running without video."; \r
 117                 }\r
 118                 catch(...)\r
 119                 {\r
 120                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 121                         CASPAR_LOG(warning) << "Failed to open audio-stream. Running without audio.";           \r
 122                 }               \r
 123 \r
 124                 CASPAR_VERIFY(video_decoder_ || audio_decoder_, ffmpeg_error());\r
 125                 \r
 126                 packets_.link_target(&throw_away_packets_);\r
 127                 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
 128                                 \r
 129                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 130                 graph_->set_text(print());\r
 131                 diagnostics::register_graph(graph_);\r
 132 \r
 133                 input_.start();\r
 134         }\r
 135 \r
 136         ~ffmpeg_producer()\r
 137         {\r
 138                 input_.stop();  \r
 139                 frames_.link_target(&throw_away_frames_);\r
 140         }\r
 141                                                 \r
 142         virtual safe_ptr<core::basic_frame> receive(int hints)\r
 143         {\r
 144                 win32_exception::install_handler();\r
 145 \r
 146                 auto frame = core::basic_frame::late();\r
 147                 \r
 148                 try\r
 149                 {               \r
 150                         frame = last_frame_ = Concurrency::receive(frames_, 10).first;\r
 151                         graph_->set_text(narrow(print()));\r
 152                 }\r
 153                 catch(operation_timed_out&)\r
 154                 {               \r
 155                         graph_->add_tag("underflow");   \r
 156                 }\r
 157 \r
 158                 return frame;\r
 159         }\r
 160 \r
 161         virtual safe_ptr<core::basic_frame> last_frame() const\r
 162         {\r
 163                 return disable_audio(last_frame_);\r
 164         }\r
 165         \r
 166         virtual int64_t nb_frames() const\r
 167         {\r
 168                 if(loop_)\r
 169                         return std::numeric_limits<int64_t>::max();\r
 170 \r
 171                 // This function estimates nb_frames until input has read all packets for one loop, at which point the count should be accurate.\r
 172 \r
 173                 int64_t nb_frames = input_.nb_frames();\r
 174                 if(input_.nb_loops() < 1) // input still hasn't counted all frames\r
 175                 {\r
 176                         int64_t video_nb_frames = video_decoder_->nb_frames();\r
 177                         int64_t audio_nb_frames = audio_decoder_->nb_frames();\r
 178 \r
 179                         nb_frames = std::min(static_cast<int64_t>(length_), std::max(nb_frames, std::max(video_nb_frames, audio_nb_frames)));\r
 180                 }\r
 181 \r
 182                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 183                 \r
 184                 return nb_frames - start_;\r
 185         }\r
 186 \r
 187         virtual void param(const std::wstring& param)\r
 188         {\r
 189                 typedef std::istream_iterator<std::wstring, wchar_t, std::char_traits<wchar_t>> wistream_iterator;\r
 190                 std::wstringstream str(param);\r
 191                 std::vector<std::wstring> params;\r
 192                 std::copy(wistream_iterator(str), wistream_iterator(), std::back_inserter(params));\r
 193 \r
 194                 if(boost::iequals(params.at(0), L"LOOP"))\r
 195                         input_.loop(boost::lexical_cast<bool>(params.at(1)));\r
 196         }\r
 197                                 \r
 198         virtual std::wstring print() const\r
 199         {\r
 200                 if(video_decoder_)\r
 201                 {\r
 202                         return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 203                                                           + boost::lexical_cast<std::wstring>(video_decoder_->width()) + L"x" + boost::lexical_cast<std::wstring>(video_decoder_->height())\r
 204                                                           + (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
 205                                                           + L"]";\r
 206                 }\r
 207                 \r
 208                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 209         }\r
 210 };\r
 211 \r
 212 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 213 {               \r
 214         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 215                 (L"mpg")(L"mpeg")(L"m2v")(L"m4v")(L"mp3")(L"mp4")(L"mpga")\r
 216                 (L"avi")\r
 217                 (L"mov")\r
 218                 (L"qt")\r
 219                 (L"webm")\r
 220                 (L"dv")         \r
 221                 (L"f4v")(L"flv")\r
 222                 (L"mkv")(L"mka")\r
 223                 (L"wmv")(L"wma")(L"wav")\r
 224                 (L"rm")(L"ram")\r
 225                 (L"ogg")(L"ogv")(L"oga")(L"ogx")\r
 226                 (L"divx")(L"xvid");\r
 227 \r
 228         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 229         \r
 230         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 231         {                                       \r
 232                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 233         });\r
 234 \r
 235         if(ext == extensions.end())\r
 236                 return core::frame_producer::empty();\r
 237 \r
 238         auto path               = filename + L"." + *ext;\r
 239         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 240         auto start              = core::get_param(L"SEEK", params, 0);\r
 241         auto length             = core::get_param(L"LENGTH", params, std::numeric_limits<size_t>::max());\r
 242         auto filter_str = core::get_param<std::wstring>(L"FILTER", params, L"");        \r
 243                 \r
 244         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 245         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 246         \r
 247         return make_safe<ffmpeg_producer>(frame_factory, path, filter_str, loop, start, length);\r
 248 }\r
 249 \r
 250 }}