git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/ffmpeg_producer.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\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 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../stdafx.h"\r
  23 \r
  24 #include "ffmpeg_producer.h"\r
  25 \r
  26 #include "../ffmpeg_error.h"\r
  27 \r
  28 #include "muxer/frame_muxer.h"\r
  29 #include "input/input.h"\r
  30 #include "util/util.h"\r
  31 #include "audio/audio_decoder.h"\r
  32 #include "video/video_decoder.h"\r
  33 \r
  34 #include <common/env.h>\r
  35 #include <common/utility/assert.h>\r
  36 #include <common/utility/param.h>\r
  37 #include <common/diagnostics/graph.h>\r
  38 \r
  39 #include <core/video_format.h>\r
  40 #include <core/producer/frame_producer.h>\r
  41 #include <core/producer/frame/frame_factory.h>\r
  42 #include <core/producer/frame/basic_frame.h>\r
  43 #include <core/producer/frame/frame_transform.h>\r
  44 \r
  45 #include <boost/algorithm/string.hpp>\r
  46 #include <boost/assign.hpp>\r
  47 #include <boost/timer.hpp>\r
  48 #include <boost/foreach.hpp>\r
  49 #include <boost/filesystem.hpp>\r
  50 #include <boost/range/algorithm/find_if.hpp>\r
  51 #include <boost/range/algorithm/find.hpp>\r
  52 #include <boost/regex.hpp>\r
  53 \r
  54 #include <tbb/parallel_invoke.h>\r
  55 \r
  56 #include <limits>\r
  57 #include <memory>\r
  58 #include <queue>\r
  59 \r
  60 namespace caspar { namespace ffmpeg {\r
  61                                 \r
  62 struct ffmpeg_producer : public core::frame_producer\r
  63 {\r
  64         const std::wstring                                                                                      filename_;\r
  65         \r
  66         const safe_ptr<diagnostics::graph>                                                      graph_;\r
  67         boost::timer                                                                                            frame_timer_;\r
  68                                         \r
  69         const safe_ptr<core::frame_factory>                                                     frame_factory_;\r
  70         const core::video_format_desc                                                           format_desc_;\r
  71 \r
  72         input                                                                                                           input_; \r
  73         std::unique_ptr<video_decoder>                                                          video_decoder_;\r
  74         std::unique_ptr<audio_decoder>                                                          audio_decoder_; \r
  75         std::unique_ptr<frame_muxer>                                                            muxer_;\r
  76 \r
  77         const double                                                                                            fps_;\r
  78         const uint32_t                                                                                          start_;\r
  79         const uint32_t                                                                                          length_;\r
  80 \r
  81         safe_ptr<core::basic_frame>                                                                     last_frame_;\r
  82         \r
  83         std::queue<std::pair<safe_ptr<core::basic_frame>, size_t>>      frame_buffer_;\r
  84 \r
  85         int64_t                                                                                                         frame_number_;\r
  86         uint32_t                                                                                                        file_frame_number_;\r
  87         \r
  88 public:\r
  89         explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, const std::wstring& filter, bool loop, uint32_t start, uint32_t length) \r
  90                 : filename_(filename)\r
  91                 , frame_factory_(frame_factory)         \r
  92                 , format_desc_(frame_factory->get_video_format_desc())\r
  93                 , input_(graph_, filename_, loop, start, length)\r
  94                 , fps_(read_fps(*input_.context(), format_desc_.fps))\r
  95                 , start_(start)\r
  96                 , length_(length)\r
  97                 , last_frame_(core::basic_frame::empty())\r
  98                 , frame_number_(0)\r
  99         {\r
 100                 graph_->add_guide("frame-time", 0.5);\r
 101                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));\r
 102                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));   \r
 103                 diagnostics::register_graph(graph_);\r
 104                 \r
 105                 try\r
 106                 {\r
 107                         video_decoder_.reset(new video_decoder(input_.context()));\r
 108                 }\r
 109                 catch(averror_stream_not_found&)\r
 110                 {\r
 111                         CASPAR_LOG(warning) << "No video-stream found. Running without video."; \r
 112                 }\r
 113                 catch(...)\r
 114                 {\r
 115                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 116                         CASPAR_LOG(warning) << "Failed to open video-stream. Running without video.";   \r
 117                 }\r
 118 \r
 119                 try\r
 120                 {\r
 121                         audio_decoder_.reset(new audio_decoder(input_.context(), frame_factory->get_video_format_desc()));\r
 122                 }\r
 123                 catch(averror_stream_not_found&)\r
 124                 {\r
 125                         CASPAR_LOG(warning) << "No audio-stream found. Running without audio."; \r
 126                 }\r
 127                 catch(...)\r
 128                 {\r
 129                         CASPAR_LOG_CURRENT_EXCEPTION();\r
 130                         CASPAR_LOG(warning) << "Failed to open audio-stream. Running without audio.";           \r
 131                 }       \r
 132 \r
 133                 if(!video_decoder_ && !audio_decoder_)\r
 134                         BOOST_THROW_EXCEPTION(averror_stream_not_found() << msg_info("No streams found"));\r
 135 \r
 136                 muxer_.reset(new frame_muxer(fps_, frame_factory, filter));\r
 137         }\r
 138 \r
 139         // frame_producer\r
 140         \r
 141         virtual safe_ptr<core::basic_frame> receive(int hints) override\r
 142         {               \r
 143                 frame_timer_.restart();\r
 144                                 \r
 145                 for(int n = 0; n < 16 && frame_buffer_.size() < 2; ++n)\r
 146                         try_decode_frame(hints);\r
 147                 \r
 148                 graph_->update_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);\r
 149                                 \r
 150                 if(frame_buffer_.empty() && input_.eof())\r
 151                         return last_frame();\r
 152 \r
 153                 if(frame_buffer_.empty())\r
 154                 {\r
 155                         graph_->add_tag("underflow");   \r
 156                         return core::basic_frame::late();                       \r
 157                 }\r
 158                 \r
 159                 auto frame = frame_buffer_.front(); \r
 160                 frame_buffer_.pop();\r
 161                 \r
 162                 ++frame_number_;\r
 163                 file_frame_number_ = frame.second;\r
 164 \r
 165                 graph_->set_text(print());\r
 166 \r
 167                 return last_frame_ = frame.first;\r
 168         }\r
 169 \r
 170         virtual safe_ptr<core::basic_frame> last_frame() const override\r
 171         {\r
 172                 return disable_audio(last_frame_);\r
 173         }\r
 174 \r
 175         virtual uint32_t nb_frames() const override\r
 176         {\r
 177                 if(input_.loop())\r
 178                         return std::numeric_limits<uint32_t>::max();\r
 179 \r
 180                 uint32_t nb_frames = file_nb_frames();\r
 181 \r
 182                 nb_frames = std::min(length_, nb_frames);\r
 183                 nb_frames = muxer_->calc_nb_frames(nb_frames);\r
 184                 \r
 185                 return nb_frames > start_ ? nb_frames - start_ : 0;\r
 186         }\r
 187 \r
 188         uint32_t file_nb_frames() const\r
 189         {\r
 190                 uint32_t file_nb_frames = 0;\r
 191                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);\r
 192                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);\r
 193                 return file_nb_frames;\r
 194         }\r
 195         \r
 196         virtual boost::unique_future<std::wstring> call(const std::wstring& param) override\r
 197         {\r
 198                 boost::promise<std::wstring> promise;\r
 199                 promise.set_value(do_call(param));\r
 200                 return promise.get_future();\r
 201         }\r
 202                                 \r
 203         virtual std::wstring print() const override\r
 204         {\r
 205                 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|" \r
 206                                                   + print_mode() + L"|" \r
 207                                                   + boost::lexical_cast<std::wstring>(file_frame_number_) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";\r
 208         }\r
 209 \r
 210         boost::property_tree::wptree info() const override\r
 211         {\r
 212                 boost::property_tree::wptree info;\r
 213                 info.add(L"type",                               L"ffmpeg-producer");\r
 214                 info.add(L"filename",                   filename_);\r
 215                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);\r
 216                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);\r
 217                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : false);\r
 218                 info.add(L"fps",                                fps_);\r
 219                 info.add(L"loop",                               input_.loop());\r
 220                 info.add(L"frame-number",               frame_number_);\r
 221                 auto nb_frames2 = nb_frames();\r
 222                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);\r
 223                 info.add(L"file-frame-number",  file_frame_number_);\r
 224                 info.add(L"file-nb-frames",             file_nb_frames());\r
 225                 return info;\r
 226         }\r
 227 \r
 228         // ffmpeg_producer\r
 229 \r
 230         std::wstring print_mode() const\r
 231         {\r
 232                 return video_decoder_ ? ffmpeg::print_mode(video_decoder_->width(), video_decoder_->height(), fps_, !video_decoder_->is_progressive()) : L"";\r
 233         }\r
 234                                         \r
 235         std::wstring do_call(const std::wstring& param)\r
 236         {\r
 237                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);\r
 238                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);\r
 239                 \r
 240                 boost::wsmatch what;\r
 241                 if(boost::regex_match(param, what, loop_exp))\r
 242                 {\r
 243                         if(!what["VALUE"].str().empty())\r
 244                                 input_.loop(boost::lexical_cast<bool>(what["VALUE"].str()));\r
 245                         return boost::lexical_cast<std::wstring>(input_.loop());\r
 246                 }\r
 247                 if(boost::regex_match(param, what, seek_exp))\r
 248                 {\r
 249                         input_.seek(boost::lexical_cast<uint32_t>(what["VALUE"].str()));\r
 250                         return L"";\r
 251                 }\r
 252 \r
 253                 BOOST_THROW_EXCEPTION(invalid_argument());\r
 254         }\r
 255 \r
 256         void try_decode_frame(int hints)\r
 257         {\r
 258                 std::shared_ptr<AVPacket> pkt;\r
 259 \r
 260                 for(int n = 0; n < 32 && ((video_decoder_ && !video_decoder_->ready()) || (audio_decoder_ && !audio_decoder_->ready())) && input_.try_pop(pkt); ++n)\r
 261                 {\r
 262                         if(video_decoder_)\r
 263                                 video_decoder_->push(pkt);\r
 264                         if(audio_decoder_)\r
 265                                 audio_decoder_->push(pkt);\r
 266                 }\r
 267                 \r
 268                 std::shared_ptr<AVFrame>                        video;\r
 269                 std::shared_ptr<core::audio_buffer> audio;\r
 270 \r
 271                 tbb::parallel_invoke(\r
 272                 [&]\r
 273                 {\r
 274                         if(!muxer_->video_ready() && video_decoder_)    \r
 275                                 video = video_decoder_->poll(); \r
 276                 },\r
 277                 [&]\r
 278                 {               \r
 279                         if(!muxer_->audio_ready() && audio_decoder_)            \r
 280                                 audio = audio_decoder_->poll();         \r
 281                 });\r
 282                 \r
 283                 muxer_->push(video, hints);\r
 284                 muxer_->push(audio);\r
 285 \r
 286                 if(!audio_decoder_)\r
 287                 {\r
 288                         if(video == flush_video())\r
 289                                 muxer_->push(flush_audio());\r
 290                         else if(!muxer_->audio_ready())\r
 291                                 muxer_->push(empty_audio());\r
 292                 }\r
 293 \r
 294                 if(!video_decoder_)\r
 295                 {\r
 296                         if(audio == flush_audio())\r
 297                                 muxer_->push(flush_video(), 0);\r
 298                         else if(!muxer_->video_ready())\r
 299                                 muxer_->push(empty_video(), 0);\r
 300                 }\r
 301                 \r
 302                 size_t file_frame_number = 0;\r
 303                 file_frame_number = std::max(file_frame_number, video_decoder_ ? video_decoder_->file_frame_number() : 0);\r
 304                 //file_frame_number = std::max(file_frame_number, audio_decoder_ ? audio_decoder_->file_frame_number() : 0);\r
 305 \r
 306                 for(auto frame = muxer_->poll(); frame; frame = muxer_->poll())\r
 307                         frame_buffer_.push(std::make_pair(make_safe_ptr(frame), file_frame_number));\r
 308         }\r
 309 };\r
 310 \r
 311 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)\r
 312 {               \r
 313         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));\r
 314 \r
 315         if(filename.empty())\r
 316                 return core::frame_producer::empty();\r
 317         \r
 318         auto loop               = boost::range::find(params, L"LOOP") != params.end();\r
 319         auto start              = get_param(L"SEEK", params, static_cast<uint32_t>(0));\r
 320         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());\r
 321         auto filter_str = get_param(L"FILTER", params, L"");    \r
 322                 \r
 323         boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");\r
 324         boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");\r
 325         \r
 326         return create_producer_destroy_proxy(make_safe<ffmpeg_producer>(frame_factory, filename, filter_str, loop, start, length));\r
 327 }\r
 328 \r
 329 }}