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 <agents_extras.h>\r
  50 #include <ppl.h>\r
  51 \r
  52 using namespace Concurrency;\r
  53 \r
  54 namespace caspar { namespace ffmpeg {\r
  55                 \r
  56 struct ffmpeg_producer : public core::frame_producer\r
  57 {       \r
  58         const std::wstring                                              filename_;\r
  59         const int                                                               start_;\r
  60         const bool                                                              loop_;\r
  61         const size_t                                                    length_;\r
  62         \r
  63         Concurrency::unbounded_buffer<std::shared_ptr<AVPacket>>                                        packet_stream_;\r
  64         std::shared_ptr<Concurrency::ISource<std::shared_ptr<AVFrame>>>                         video_stream_;\r
  65         std::shared_ptr<Concurrency::ISource<std::shared_ptr<core::audio_buffer>>>      audio_stream_;\r
  66         Concurrency::bounded_buffer<std::shared_ptr<core::basic_frame>>                         frame_stream_;\r
  67                 \r
  68         const safe_ptr<diagnostics::graph>              graph_;\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_muxer2>                   muxer_;\r
  74 \r
  75         safe_ptr<core::basic_frame>                             last_frame_;\r
  76         \r
  77 public:\r
  78         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
  79                 : filename_(filename)\r
  80                 , start_(start)\r
  81                 , loop_(loop)\r
  82                 , length_(length)\r
  83                 , frame_stream_(2)\r
  84                 , graph_(diagnostics::create_graph([this]{return print();}, false))\r
  85                 , input_(packet_stream_, graph_, filename_, loop, start, length)\r
  86                 , last_frame_(core::basic_frame::empty())\r
  87         {\r
  88                 try\r
  89                 {\r
  90                         auto target = std::make_shared<Concurrency::bounded_buffer<std::shared_ptr<AVFrame>>>(2);\r
  91                         video_decoder_.reset(new video_decoder(packet_stream_, *target, input_.context(), frame_factory->get_video_format_desc().fps));\r
  92                         video_stream_ = target;\r
  93                 }\r
  94                 catch(ffmpeg_stream_not_found&)\r
  95                 {\r
  96                         CASPAR_LOG(warning) << "No video-stream found. Running without video."; \r
  97                 }\r
  98                 catch(...)\r
  99                 {\r
 100                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 101                         CASPAR_LOG(warning) << "Failed to open video-stream. Running without video.";   \r
 102                 }\r
 103 \r
 104                 try\r
 105                 {\r
 106                         auto target = std::make_shared<Concurrency::bounded_buffer<std::shared_ptr<core::audio_buffer>>>(25);\r
 107                         audio_decoder_.reset(new audio_decoder(packet_stream_, *target, input_.context(), frame_factory->get_video_format_desc()));\r
 108                         audio_stream_ = target;\r
 109                 }\r
 110                 catch(ffmpeg_stream_not_found&)\r
 111                 {\r
 112                         CASPAR_LOG(warning) << "No audio-stream found. Running without video."; \r
 113                 }\r
 114                 catch(...)\r
 115                 {\r
 116                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 117                         CASPAR_LOG(warning) << "Failed to open audio-stream. Running without audio.";           \r
 118                 }\r
 119 \r
 120                 CASPAR_VERIFY(video_decoder_ || audio_decoder_, ffmpeg_error());\r
 121 \r
 122                 muxer_.reset(new frame_muxer2(video_stream_, audio_stream_, frame_stream_, 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                 while(Concurrency::receive(frame_stream_) != core::basic_frame::eof())\r
 134                 {\r
 135                 }\r
 136         }\r
 137                                                 \r
 138         virtual safe_ptr<core::basic_frame> receive(int hints)\r
 139         {\r
 140                 auto frame = core::basic_frame::late();\r
 141                 \r
 142                 try\r
 143                 {               \r
 144                         frame = last_frame_ = safe_ptr<core::basic_frame>(Concurrency::receive(frame_stream_, 10));\r
 145                 }\r
 146                 catch(Concurrency::operation_timed_out&)\r
 147                 {               \r
 148                         graph_->add_tag("underflow");   \r
 149                 }\r
 150 \r
 151                 return frame;\r
 152         }\r
 153 \r
 154         virtual safe_ptr<core::basic_frame> last_frame() const\r
 155         {\r
 156                 return disable_audio(last_frame_);\r
 157         }\r
 158         \r
 159         virtual int64_t nb_frames() const\r
 160         {\r
 161                 if(loop_)\r
 162                         return std::numeric_limits<int64_t>::max();\r
 163 \r
 164                 // This function estimates nb_frames until input has read all packets for one loop, at which point the count should be accurate.\r
 165 \r
 166                 int64_t nb_frames = input_.nb_frames();\r
 167                 if(input_.nb_loops() < 1) // input still hasn't counted all frames\r
 168                 {\r
 169                         int64_t video_nb_frames = video_decoder_->nb_frames();\r
 170                         int64_t audio_nb_frames = audio_decoder_->nb_frames();\r
 171 \r
 172                         nb_frames = std::min(static_cast<int64_t>(length_), std::max(nb_frames, std::max(video_nb_frames, audio_nb_frames)));\r
 173                 }\r
 174 \r
 175                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 176 \r
 177                 // TODO: Might need to scale nb_frames av frame_muxer transformations.\r
 178 \r
 179                 return nb_frames - start_;\r
 180         }\r
 181                                 \r
 182         virtual std::wstring print() const\r
 183         {\r
 184                 if(video_decoder_)\r
 185                 {\r
 186                         return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 187                                                           + boost::lexical_cast<std::wstring>(video_decoder_->width()) + L"x" + boost::lexical_cast<std::wstring>(video_decoder_->height())\r
 188                                                           + (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
 189                                                           + L"]";\r
 190                 }\r
 191                 \r
 192                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 193         }\r
 194 };\r
 195 \r
 196 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 197 {               \r
 198         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 199                 (L"mpg")(L"mpeg")(L"m2v")(L"m4v")(L"mp3")(L"mp4")(L"mpga")\r
 200                 (L"avi")\r
 201                 (L"mov")\r
 202                 (L"qt")\r
 203                 (L"webm")\r
 204                 (L"dv")         \r
 205                 (L"f4v")(L"flv")\r
 206                 (L"mkv")(L"mka")\r
 207                 (L"wmv")(L"wma")(L"wav")\r
 208                 (L"rm")(L"ram")\r
 209                 (L"ogg")(L"ogv")(L"oga")(L"ogx")\r
 210                 (L"divx")(L"xvid");\r
 211 \r
 212         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 213         \r
 214         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 215         {                                       \r
 216                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 217         });\r
 218 \r
 219         if(ext == extensions.end())\r
 220                 return core::frame_producer::empty();\r
 221 \r
 222         auto path               = filename + L"." + *ext;\r
 223         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 224         auto start              = core::get_param(L"SEEK", params, 0);\r
 225         auto length             = core::get_param(L"LENGTH", params, std::numeric_limits<size_t>::max());\r
 226         auto filter_str = core::get_param<std::wstring>(L"FILTER", params, L"");        \r
 227                 \r
 228         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 229         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 230         \r
 231         return make_safe<ffmpeg_producer>(frame_factory, path, filter_str, loop, start, length);\r
 232 }\r
 233 \r
 234 }}