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 \r
  30 #include <common/env.h>\r
  31 #include <common/utility/assert.h>\r
  32 #include <common/diagnostics/graph.h>\r
  33 \r
  34 #include <core/video_format.h>\r
  35 #include <core/producer/frame_producer.h>\r
  36 #include <core/producer/frame/frame_factory.h>\r
  37 #include <core/producer/frame/basic_frame.h>\r
  38 \r
  39 #include <boost/assign.hpp>\r
  40 #include <boost/timer.hpp>\r
  41 #include <boost/foreach.hpp>\r
  42 #include <boost/filesystem.hpp>\r
  43 #include <boost/range/algorithm/find_if.hpp>\r
  44 #include <boost/range/algorithm/find.hpp>\r
  45 \r
  46 #include <tbb/task_group.h>\r
  47 #include <tbb/parallel_invoke.h>\r
  48 \r
  49 namespace caspar {\r
  50                         \r
  51 struct ffmpeg_producer : public core::frame_producer\r
  52 {\r
  53         const std::wstring                                                              filename_;\r
  54         \r
  55         const safe_ptr<diagnostics::graph>                              graph_;\r
  56         boost::timer                                                                    frame_timer_;\r
  57                                         \r
  58         const safe_ptr<core::frame_factory>                             frame_factory_;\r
  59         const core::video_format_desc                                   format_desc_;\r
  60 \r
  61         input                                                                                   input_; \r
  62         video_decoder                                                                   video_decoder_;\r
  63         audio_decoder                                                                   audio_decoder_;\r
  64         \r
  65         frame_muxer                                                                             muxer_;\r
  66 \r
  67         int                                                                                             late_frames_;\r
  68         const int                                                                               start_;\r
  69         const bool                                                                              loop_;\r
  70 \r
  71         safe_ptr<core::basic_frame>                                             last_frame_;\r
  72         \r
  73 public:\r
  74         explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, const std::wstring& filter, bool loop, int start, int length) \r
  75                 : filename_(filename)\r
  76                 , graph_(diagnostics::create_graph(narrow(print())))\r
  77                 , frame_factory_(frame_factory)         \r
  78                 , format_desc_(frame_factory->get_video_format_desc())\r
  79                 , input_(graph_, filename_, loop, start, length)\r
  80                 , video_decoder_(input_.context(), frame_factory, filter)\r
  81                 , audio_decoder_(input_.context(), frame_factory->get_video_format_desc())\r
  82                 , muxer_(video_decoder_.fps(), frame_factory)\r
  83                 , late_frames_(0)\r
  84                 , start_(start)\r
  85                 , loop_(loop)\r
  86                 , last_frame_(core::basic_frame::empty())\r
  87         {\r
  88                 graph_->add_guide("frame-time", 0.5);\r
  89                 graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
  90                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));           \r
  91                 \r
  92                 for(int n = 0; n < 128 && muxer_.size() < 2; ++n)\r
  93                         decode_frame(0);\r
  94         }\r
  95                 \r
  96         virtual safe_ptr<core::basic_frame> receive(int hints)\r
  97         {\r
  98                 auto frame = core::basic_frame::late();\r
  99                 \r
 100                 frame_timer_.restart();\r
 101 \r
 102                 for(int n = 0; n < 64 && muxer_.size() < 2; ++n)\r
 103                         decode_frame(hints);\r
 104                 \r
 105                 if(!muxer_.empty())\r
 106                         frame = last_frame_ = muxer_.pop();     \r
 107                 else\r
 108                 {\r
 109                         if(input_.eof())\r
 110                                 frame =  core::basic_frame::eof();\r
 111                         else\r
 112                         {\r
 113                                 graph_->add_tag("underflow");   \r
 114                                 ++late_frames_;         \r
 115                         }\r
 116                 }\r
 117                 \r
 118                 graph_->update_value("frame-time", static_cast<float>(frame_timer_.elapsed()*format_desc_.fps*0.5));\r
 119                 \r
 120                 return frame;\r
 121         }\r
 122 \r
 123         virtual safe_ptr<core::basic_frame> last_frame() const\r
 124         {\r
 125                 return disable_audio(last_frame_);\r
 126         }\r
 127 \r
 128         void decode_frame(int hints)\r
 129         {\r
 130                 for(int n = 0; n < 32 && ((!muxer_.video_ready() && !video_decoder_.ready()) || (!muxer_.audio_ready() && !audio_decoder_.ready())); ++n) \r
 131                 {\r
 132                         std::shared_ptr<AVPacket> pkt;\r
 133                         if(input_.try_pop(pkt))\r
 134                         {\r
 135                                 video_decoder_.push(pkt);\r
 136                                 audio_decoder_.push(pkt);\r
 137                         }\r
 138                 }\r
 139 \r
 140                 decltype(video_decoder_.poll()) video_frames;\r
 141                 decltype(audio_decoder_.poll()) audio_samples;\r
 142                 \r
 143                 tbb::parallel_invoke(\r
 144                 [&]\r
 145                 {\r
 146                         if(!muxer_.video_ready())\r
 147                                 video_frames = video_decoder_.poll();\r
 148                 },\r
 149                 [&]\r
 150                 {\r
 151                         if(!muxer_.audio_ready())\r
 152                                 audio_samples = audio_decoder_.poll();\r
 153                 });\r
 154                 \r
 155                 BOOST_FOREACH(auto& audio, audio_samples)\r
 156                         muxer_.push(audio);\r
 157 \r
 158                 BOOST_FOREACH(auto& video, video_frames)                \r
 159                         muxer_.push(video, hints);              \r
 160         }\r
 161 \r
 162         virtual int64_t nb_frames() const\r
 163         {\r
 164                 auto nb_frames = input_.nb_frames() != 0 ? input_.nb_frames() : video_decoder_.nb_frames();\r
 165                 return loop_ ? 0 : (nb_frames + late_frames_ - start_);\r
 166         }\r
 167                                 \r
 168         virtual std::wstring print() const\r
 169         {\r
 170                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 171         }\r
 172 };\r
 173 \r
 174 safe_ptr<core::frame_producer> create_ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 175 {               \r
 176         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 177                 (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"wmv")(L"wma")(L"ogg")(L"divx")(L"xvid")(L"wav")(L"mp3")(L"m2v");\r
 178         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 179         \r
 180         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 181         {                                       \r
 182                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 183         });\r
 184 \r
 185         if(ext == extensions.end())\r
 186                 return core::frame_producer::empty();\r
 187 \r
 188         std::wstring path = filename + L"." + *ext;\r
 189         bool loop = boost::find(params, L"LOOP") != params.end();\r
 190 \r
 191         int start = -1;\r
 192         int length = -1;\r
 193         \r
 194         auto seek_it = std::find(params.begin(), params.end(), L"SEEK");\r
 195         if(seek_it != params.end())\r
 196         {\r
 197                 if(++seek_it != params.end())\r
 198                         start = boost::lexical_cast<int>(*seek_it);\r
 199         }\r
 200 \r
 201         std::wstring filter = L"";\r
 202         auto filter_it = std::find(params.begin(), params.end(), L"FILTER");\r
 203         if(filter_it != params.end())\r
 204         {\r
 205                 if(++filter_it != params.end())\r
 206                         filter = *filter_it;\r
 207         }\r
 208 \r
 209         return make_safe<ffmpeg_producer>(frame_factory, path, filter, loop, start, length);\r
 210 }\r
 211 \r
 212 }