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 "audio/audio_decoder.h"\r
  27 #include "video/video_decoder.h"\r
  28 \r
  29 #include <common/utility/assert.h>\r
  30 #include <common/utility/timer.h>\r
  31 #include <common/diagnostics/graph.h>\r
  32 \r
  33 #include <core/mixer/write_frame.h>\r
  34 #include <core/video_format.h>\r
  35 #include <core/producer/frame/audio_transform.h>\r
  36 #include <core/producer/frame/basic_frame.h>\r
  37 #include <core/producer/color/color_producer.h>\r
  38 \r
  39 #include <common/env.h>\r
  40 \r
  41 #include <boost/timer.hpp>\r
  42 #include <boost/range/algorithm.hpp>\r
  43 #include <boost/range/algorithm_ext.hpp>\r
  44 \r
  45 #include <tbb/task_group.h>\r
  46 \r
  47 #include <deque>\r
  48 #include <vector>\r
  49 \r
  50 namespace caspar {\r
  51                         \r
  52 struct ffmpeg_producer : public core::frame_producer\r
  53 {\r
  54         const std::wstring                                                              filename_;\r
  55         \r
  56         const safe_ptr<diagnostics::graph>                              graph_;\r
  57         boost::timer                                                                    frame_timer_;\r
  58                                         \r
  59         const safe_ptr<core::frame_factory>                             frame_factory_;\r
  60         const core::video_format_desc                                   format_desc_;\r
  61 \r
  62         input                                                                                   input_; \r
  63         video_decoder                                                                   video_decoder_;\r
  64         audio_decoder                                                                   audio_decoder_;\r
  65         \r
  66         frame_muxer                                                                             muxer_;\r
  67         \r
  68         tbb::task_group                                                                 tasks_;\r
  69 \r
  70         int                                                                                             start_;\r
  71         int64_t                                                                                 nb_frames_;\r
  72         bool                                                                                    loop_;\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, int length) \r
  78                 : filename_(filename)\r
  79                 , graph_(diagnostics::create_graph(narrow(print())))\r
  80                 , frame_factory_(frame_factory)         \r
  81                 , format_desc_(frame_factory->get_video_format_desc())\r
  82                 , input_(safe_ptr<diagnostics::graph>(graph_), filename_, loop, start, length)\r
  83                 , video_decoder_(input_.context(), frame_factory, filter)\r
  84                 , audio_decoder_(input_.context(), frame_factory->get_video_format_desc())\r
  85                 , muxer_(video_decoder_.fps(), format_desc_, frame_factory)\r
  86                 , start_(start)\r
  87                 , nb_frames_(video_decoder_.nb_frames() - start)\r
  88                 , loop_(loop)\r
  89                 , last_frame_(core::basic_frame::empty())\r
  90         {\r
  91                 graph_->add_guide("frame-time", 0.5);\r
  92                 graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
  93                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));           \r
  94                 \r
  95                 for(int n = 0; n < 128 && muxer_.size() < 2; ++n)\r
  96                         decode_frame();\r
  97         }\r
  98         \r
  99         virtual safe_ptr<core::basic_frame> receive()\r
 100         {\r
 101                 // TODO: Do rendering asynchronously.\r
 102 \r
 103                 frame_timer_.restart();\r
 104 \r
 105                 for(int n = 0; n < 64 && muxer_.size() < 2; ++n)\r
 106                         decode_frame();\r
 107 \r
 108                 graph_->update_value("frame-time", static_cast<float>(frame_timer_.elapsed()*format_desc_.fps*0.5));\r
 109                 \r
 110                 auto frame = core::basic_frame::late();\r
 111 \r
 112                 if(muxer_.empty())\r
 113                 {\r
 114                         if(input_.eof())\r
 115                                 frame = core::basic_frame::eof();\r
 116                         else\r
 117                         {\r
 118                                 graph_->add_tag("underflow");   \r
 119                                 ++nb_frames_;\r
 120                         }\r
 121                 }\r
 122                 else            \r
 123                         frame = last_frame_ = muxer_.pop();             \r
 124                 \r
 125                 return frame;\r
 126         }\r
 127 \r
 128         virtual safe_ptr<core::basic_frame> last_frame() const\r
 129         {\r
 130                 return disable_audio(last_frame_);\r
 131         }\r
 132 \r
 133         void decode_frame()\r
 134         {\r
 135                 for(int n = 0; n < 32 && ((muxer_.video_frames() < 2 && !video_decoder_.ready()) ||     (muxer_.audio_chunks() < 2 && !audio_decoder_.ready())); ++n) \r
 136                 {\r
 137                         std::shared_ptr<AVPacket> pkt;\r
 138                         if(input_.try_pop(pkt))\r
 139                         {\r
 140                                 video_decoder_.push(pkt);\r
 141                                 audio_decoder_.push(pkt);\r
 142                         }\r
 143                 }\r
 144 \r
 145                 decltype(video_decoder_.poll()) video_frames;\r
 146                 decltype(audio_decoder_.poll()) audio_samples;\r
 147                 \r
 148                 tbb::parallel_invoke(\r
 149                 [&]\r
 150                 {\r
 151                         if(muxer_.video_frames() < 2)\r
 152                                 video_frames = video_decoder_.poll();\r
 153                 },\r
 154                 [&]\r
 155                 {\r
 156                         if(muxer_.audio_chunks() < 2)\r
 157                                 audio_samples = audio_decoder_.poll();\r
 158                 });\r
 159                 \r
 160                 BOOST_FOREACH(auto& audio, audio_samples)\r
 161                         muxer_.push(audio);\r
 162 \r
 163                 BOOST_FOREACH(auto& video, video_frames)\r
 164                         muxer_.push(video);             \r
 165         }\r
 166 \r
 167         virtual int64_t nb_frames() const\r
 168         {\r
 169                 return loop_ ? 0 : nb_frames_;\r
 170         }\r
 171                                 \r
 172         virtual std::wstring print() const\r
 173         {\r
 174                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 175         }\r
 176 };\r
 177 \r
 178 safe_ptr<core::frame_producer> create_ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 179 {               \r
 180         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 181                 (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
 182         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 183         \r
 184         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 185         {                                       \r
 186                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 187         });\r
 188 \r
 189         if(ext == extensions.end())\r
 190                 return core::frame_producer::empty();\r
 191 \r
 192         std::wstring path = filename + L"." + *ext;\r
 193         bool loop = boost::find(params, L"LOOP") != params.end();\r
 194 \r
 195         int start = -1;\r
 196         int length = -1;\r
 197         \r
 198         auto seek_it = std::find(params.begin(), params.end(), L"SEEK");\r
 199         if(seek_it != params.end())\r
 200         {\r
 201                 if(++seek_it != params.end())\r
 202                         start = boost::lexical_cast<int>(*seek_it);\r
 203         }\r
 204 \r
 205         std::wstring filter = L"";\r
 206         auto filter_it = std::find(params.begin(), params.end(), L"FILTER");\r
 207         if(filter_it != params.end())\r
 208         {\r
 209                 if(++filter_it != params.end())\r
 210                         filter = *filter_it;\r
 211         }\r
 212 \r
 213         return make_safe<ffmpeg_producer>(frame_factory, path, filter, loop, start, length);\r
 214 }\r
 215 \r
 216 }