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 "input.h"\r
  25 #include "audio/audio_decoder.h"\r
  26 #include "video/video_decoder.h"\r
  27 \r
  28 #include <common/utility/assert.h>\r
  29 #include <common/utility/timer.h>\r
  30 #include <common/diagnostics/graph.h>\r
  31 \r
  32 #include <core/mixer/write_frame.h>\r
  33 #include <core/video_format.h>\r
  34 #include <core/producer/frame/audio_transform.h>\r
  35 #include <core/producer/frame/basic_frame.h>\r
  36 #include <core/producer/color/color_producer.h>\r
  37 #include <core/producer/frame_muxer.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         std::queue<safe_ptr<core::basic_frame>>                 output_buffer_;\r
  67 \r
  68         core::frame_muxer                                                               muxer_;\r
  69         \r
  70         tbb::task_group                                                                 tasks_;\r
  71 \r
  72 public:\r
  73         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
  74                 : filename_(filename)\r
  75                 , graph_(diagnostics::create_graph(narrow(print())))\r
  76                 , frame_factory_(frame_factory)         \r
  77                 , format_desc_(frame_factory->get_video_format_desc())\r
  78                 , input_(safe_ptr<diagnostics::graph>(graph_), filename_, loop, start, length)\r
  79                 , video_decoder_(input_.context(), frame_factory, filter)\r
  80                 , audio_decoder_(input_.context(), frame_factory->get_video_format_desc())\r
  81                 , muxer_(video_decoder_.fps(), format_desc_.mode, format_desc_.fps)\r
  82         {\r
  83                 graph_->add_guide("frame-time", 0.5);\r
  84                 graph_->set_color("frame-time", diagnostics::color(1.0f, 0.0f, 0.0f));\r
  85                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));           \r
  86                 \r
  87                 for(int n = 0; n < 128 && muxer_.size() < 4; ++n)\r
  88                         decode_frame();\r
  89         }\r
  90 \r
  91         ~ffmpeg_producer()\r
  92         {\r
  93                 tasks_.cancel();\r
  94                 tasks_.wait();\r
  95         }\r
  96 \r
  97         virtual safe_ptr<core::basic_frame> receive()\r
  98         {\r
  99                 if(output_buffer_.empty())\r
 100                 {       \r
 101                         tasks_.wait();\r
 102 \r
 103                         while(muxer_.size() > 0)\r
 104                                 output_buffer_.push(muxer_.pop());\r
 105 \r
 106                         tasks_.run([=]\r
 107                         {\r
 108                                 frame_timer_.restart();\r
 109 \r
 110                                 for(int n = 0; n < 64 && muxer_.empty(); ++n)\r
 111                                         decode_frame();\r
 112 \r
 113                                 graph_->update_value("frame-time", static_cast<float>(frame_timer_.elapsed()*format_desc_.fps*0.5));\r
 114                         });\r
 115                 }\r
 116                 \r
 117                 auto frame = core::basic_frame::late();\r
 118 \r
 119                 if(output_buffer_.empty())\r
 120                 {\r
 121                         if(input_.eof())\r
 122                                 frame = core::basic_frame::eof();\r
 123                         else\r
 124                                 graph_->add_tag("underflow");                   \r
 125                 }\r
 126                 else\r
 127                 {\r
 128                         frame = output_buffer_.front();\r
 129                         output_buffer_.pop();\r
 130                 }\r
 131                 \r
 132                 return frame;\r
 133         }\r
 134 \r
 135         void decode_frame()\r
 136         {\r
 137                 for(int n = 0; n < 32 && ((muxer_.video_frames() < 2 && !video_decoder_.ready()) ||     (muxer_.audio_chunks() < 2 && !audio_decoder_.ready())); ++n) \r
 138                 {\r
 139                         std::shared_ptr<AVPacket> pkt;\r
 140                         if(input_.try_pop(pkt))\r
 141                         {\r
 142                                 video_decoder_.push(pkt);\r
 143                                 audio_decoder_.push(pkt);\r
 144                         }\r
 145                 }\r
 146                 \r
 147                 tbb::parallel_invoke(\r
 148                 [=]\r
 149                 {\r
 150                         if(muxer_.video_frames() < 2)\r
 151                         {\r
 152                                 BOOST_FOREACH(auto& video_frame, video_decoder_.poll())\r
 153                                         muxer_.push(video_frame);\r
 154                         }\r
 155                 },\r
 156                 [=]\r
 157                 {\r
 158                         if(muxer_.audio_chunks() < 2)\r
 159                         {\r
 160                                 BOOST_FOREACH(auto& audio_chunk, audio_decoder_.poll())\r
 161                                         muxer_.push(audio_chunk);\r
 162                         }\r
 163                 });\r
 164         }\r
 165                                 \r
 166         virtual std::wstring print() const\r
 167         {\r
 168                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";\r
 169         }\r
 170 };\r
 171 \r
 172 safe_ptr<core::frame_producer> create_ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 173 {               \r
 174         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 175                 (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
 176         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 177         \r
 178         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 179         {                                       \r
 180                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 181         });\r
 182 \r
 183         if(ext == extensions.end())\r
 184                 return core::frame_producer::empty();\r
 185 \r
 186         std::wstring path = filename + L"." + *ext;\r
 187         bool loop = boost::find(params, L"LOOP") != params.end();\r
 188 \r
 189         int start = -1;\r
 190         int length = -1;\r
 191         \r
 192         auto seek_it = std::find(params.begin(), params.end(), L"SEEK");\r
 193         if(seek_it != params.end())\r
 194         {\r
 195                 if(++seek_it != params.end())\r
 196                         start = boost::lexical_cast<int>(*seek_it);\r
 197         }\r
 198 \r
 199         std::wstring filter = L"";\r
 200         auto filter_it = std::find(params.begin(), params.end(), L"FILTER");\r
 201         if(filter_it != params.end())\r
 202         {\r
 203                 if(++filter_it != params.end())\r
 204                         filter = *filter_it;\r
 205         }\r
 206 \r
 207         return make_safe<ffmpeg_producer>(frame_factory, path, filter, loop, start, length);\r
 208 }\r
 209 \r
 210 }