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/algorithm/string.hpp>\r
  40 #include <boost/assign.hpp>\r
  41 #include <boost/timer.hpp>\r
  42 #include <boost/foreach.hpp>\r
  43 #include <boost/filesystem.hpp>\r
  44 #include <boost/range/algorithm/find_if.hpp>\r
  45 #include <boost/range/algorithm/find.hpp>\r
  46 \r
  47 #include <tbb/parallel_invoke.h>\r
  48 \r
  49 namespace caspar { namespace ffmpeg {\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         boost::timer                                                                    video_timer_;\r
  58         boost::timer                                                                    audio_timer_;\r
  59                                         \r
  60         const safe_ptr<core::frame_factory>                             frame_factory_;\r
  61         const core::video_format_desc                                   format_desc_;\r
  62 \r
  63         input                                                                                   input_; \r
  64         video_decoder                                                                   video_decoder_;\r
  65         audio_decoder                                                                   audio_decoder_; \r
  66         double                                                                                  fps_;\r
  67         frame_muxer                                                                             muxer_;\r
  68 \r
  69         const int                                                                               start_;\r
  70         const bool                                                                              loop_;\r
  71         const size_t                                                                    length_;\r
  72 \r
  73         safe_ptr<core::basic_frame>                                             last_frame_;\r
  74 \r
  75         const size_t                                                                    width_;\r
  76         const size_t                                                                    height_;\r
  77         bool                                                                                    is_progressive_;\r
  78         \r
  79 public:\r
  80         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
  81                 : filename_(filename)\r
  82                 , graph_(diagnostics::create_graph([this]{return print();}))\r
  83                 , frame_factory_(frame_factory)         \r
  84                 , format_desc_(frame_factory->get_video_format_desc())\r
  85                 , input_(graph_, filename_, loop, start, length)\r
  86                 , video_decoder_(input_.context(), frame_factory, filter)\r
  87                 , audio_decoder_(input_.context(), frame_factory->get_video_format_desc())\r
  88                 , fps_(video_decoder_.fps())\r
  89                 , muxer_(fps_, frame_factory)\r
  90                 , start_(start)\r
  91                 , loop_(loop)\r
  92                 , length_(length)\r
  93                 , last_frame_(core::basic_frame::empty())\r
  94                 , width_(video_decoder_.width())\r
  95                 , height_(video_decoder_.height())\r
  96                 , is_progressive_(true)\r
  97         {\r
  98                 graph_->add_guide("frame-time", 0.5);\r
  99                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 100                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 101                 \r
 102                 // Do some pre-work in order to not block rendering thread for initialization and allocations.\r
 103 \r
 104                 push_packets();\r
 105                 auto video_frames = video_decoder_.poll();\r
 106                 if(!video_frames.empty())\r
 107                 {\r
 108                         auto& video_frame = video_frames.front();\r
 109                         auto  desc                = get_pixel_format_desc(static_cast<PixelFormat>(video_frame->format), video_frame->width, video_frame->height);\r
 110                         if(desc.pix_fmt == core::pixel_format::invalid)\r
 111                                 get_pixel_format_desc(PIX_FMT_BGRA, video_frame->width, video_frame->height);\r
 112                         \r
 113                         for(int n = 0; n < 3; ++n)\r
 114                                 frame_factory->create_frame(this, desc);\r
 115                 }\r
 116                 BOOST_FOREACH(auto& video, video_frames)                        \r
 117                         muxer_.push(video, 0);  \r
 118         }\r
 119                         \r
 120         virtual safe_ptr<core::basic_frame> receive(int hints)\r
 121         {\r
 122                 auto frame = core::basic_frame::late();\r
 123                 \r
 124                 frame_timer_.restart();\r
 125                 \r
 126                 for(int n = 0; n < 64 && muxer_.empty(); ++n)\r
 127                         decode_frame(hints);\r
 128                 \r
 129                 graph_->update_value("frame-time", static_cast<float>(frame_timer_.elapsed()*format_desc_.fps*0.5));\r
 130 \r
 131                 if(!muxer_.empty())\r
 132                         frame = last_frame_ = muxer_.pop();     \r
 133                 else\r
 134                 {\r
 135                         if(input_.eof())\r
 136                                 return core::basic_frame::eof();\r
 137                         else                    \r
 138                                 graph_->add_tag("underflow");   \r
 139                 }\r
 140                 \r
 141                 return frame;\r
 142         }\r
 143 \r
 144         virtual safe_ptr<core::basic_frame> last_frame() const\r
 145         {\r
 146                 return disable_audio(last_frame_);\r
 147         }\r
 148 \r
 149         void push_packets()\r
 150         {\r
 151                 for(int n = 0; n < 16 && ((!muxer_.video_ready() && !video_decoder_.ready()) || (!muxer_.audio_ready() && !audio_decoder_.ready())); ++n) \r
 152                 {\r
 153                         std::shared_ptr<AVPacket> pkt;\r
 154                         if(input_.try_pop(pkt))\r
 155                         {\r
 156                                 video_decoder_.push(pkt);\r
 157                                 audio_decoder_.push(pkt);\r
 158                         }\r
 159                 }\r
 160         }\r
 161 \r
 162         void decode_frame(int hints)\r
 163         {\r
 164                 push_packets();\r
 165                 \r
 166                 tbb::parallel_invoke(\r
 167                 [&]\r
 168                 {\r
 169                         if(muxer_.video_ready())\r
 170                                 return;\r
 171 \r
 172                         auto video_frames = video_decoder_.poll();\r
 173                         BOOST_FOREACH(auto& video, video_frames)        \r
 174                         {\r
 175                                 is_progressive_ = video ? video->interlaced_frame == 0 : is_progressive_;\r
 176                                 muxer_.push(video, hints);      \r
 177                         }\r
 178                 },\r
 179                 [&]\r
 180                 {\r
 181                         if(muxer_.audio_ready())\r
 182                                 return;\r
 183                                         \r
 184                         auto audio_samples = audio_decoder_.poll();\r
 185                         BOOST_FOREACH(auto& audio, audio_samples)\r
 186                                 muxer_.push(audio);                             \r
 187                 });\r
 188 \r
 189                 muxer_.commit();\r
 190         }\r
 191 \r
 192         virtual int64_t nb_frames() const \r
 193         {\r
 194                 if(loop_)\r
 195                         return std::numeric_limits<int64_t>::max();\r
 196 \r
 197                 // This function estimates nb_frames until input has read all packets for one loop, at which point the count should be accurate.\r
 198 \r
 199                 int64_t nb_frames = input_.nb_frames();\r
 200                 if(input_.nb_loops() < 1) // input still hasn't counted all frames\r
 201                 {\r
 202                         int64_t video_nb_frames = video_decoder_.nb_frames();\r
 203                         int64_t audio_nb_frames = audio_decoder_.nb_frames();\r
 204 \r
 205                         nb_frames = std::min(static_cast<int64_t>(length_), std::max(nb_frames, std::max(video_nb_frames, audio_nb_frames)));\r
 206                 }\r
 207 \r
 208                 nb_frames = muxer_.calc_nb_frames(nb_frames);\r
 209 \r
 210                 // TODO: Might need to scale nb_frames av frame_muxer transformations.\r
 211 \r
 212                 return nb_frames - start_;\r
 213         }\r
 214                                 \r
 215         virtual std::wstring print() const\r
 216         {\r
 217                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 218                                                   + boost::lexical_cast<std::wstring>(width_) + L"x" + boost::lexical_cast<std::wstring>(height_)\r
 219                                                   + (is_progressive_ ? L"p" : L"i")  + boost::lexical_cast<std::wstring>(is_progressive_ ? fps_ : 2.0 * fps_)\r
 220                                                   + L"]";\r
 221         }\r
 222 };\r
 223 \r
 224 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 225 {               \r
 226         static const std::vector<std::wstring> extensions = boost::assign::list_of\r
 227                 (L"mpg")(L"mpeg")(L"m2v")(L"m4v")(L"mp3")(L"mp4")(L"mpga")\r
 228                 (L"avi")\r
 229                 (L"mov")\r
 230                 (L"qt")\r
 231                 (L"webm")\r
 232                 (L"dv")         \r
 233                 (L"f4v")(L"flv")\r
 234                 (L"mkv")(L"mka")\r
 235                 (L"wmv")(L"wma")(L"wav")\r
 236                 (L"rm")(L"ram")\r
 237                 (L"ogg")(L"ogv")(L"oga")(L"ogx")\r
 238                 (L"divx")(L"xvid");\r
 239 \r
 240         std::wstring filename = env::media_folder() + L"\\" + params[0];\r
 241         \r
 242         auto ext = boost::find_if(extensions, [&](const std::wstring& ex)\r
 243         {                                       \r
 244                 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));\r
 245         });\r
 246 \r
 247         if(ext == extensions.end())\r
 248                 return core::frame_producer::empty();\r
 249 \r
 250         auto path               = filename + L"." + *ext;\r
 251         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 252         auto start              = core::get_param(L"SEEK", params, 0);\r
 253         auto length             = core::get_param(L"LENGTH", params, std::numeric_limits<size_t>::max());\r
 254         auto filter_str = core::get_param<std::wstring>(L"FILTER", params, L"");        \r
 255                 \r
 256         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 257         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 258         \r
 259         return make_safe<ffmpeg_producer>(frame_factory, path, filter_str, loop, start, length);\r
 260 }\r
 261 \r
 262 }}