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

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "../stdafx.h"
  23
  24 #include "ffmpeg_producer.h"
  25
  26 #include "../ffmpeg_error.h"
  27
  28 #include "muxer/frame_muxer.h"
  29 #include "input/input.h"
  30 #include "util/util.h"
  31 #include "audio/audio_decoder.h"
  32 #include "video/video_decoder.h"
  33
  34 #include <common/env.h>
  35 #include <common/log.h>
  36 #include <common/param.h>
  37 #include <common/diagnostics/graph.h>
  38 #include <common/future.h>
  39
  40 #include <core/video_format.h>
  41 #include <core/producer/frame_producer.h>
  42 #include <core/frame/frame_factory.h>
  43 #include <core/frame/draw_frame.h>
  44 #include <core/frame/frame_transform.h>
  45 #include <core/monitor/monitor.h>
  46
  47 #include <boost/algorithm/string.hpp>
  48 #include <common/assert.h>
  49 #include <boost/assign.hpp>
  50 #include <boost/timer.hpp>
  51 #include <boost/foreach.hpp>
  52 #include <boost/filesystem.hpp>
  53 #include <boost/range/algorithm/find_if.hpp>
  54 #include <boost/range/algorithm/find.hpp>
  55 #include <boost/property_tree/ptree.hpp>
  56 #include <boost/regex.hpp>
  57 #include <boost/thread/future.hpp>
  58
  59 #include <tbb/parallel_invoke.h>
  60
  61 #include <limits>
  62 #include <memory>
  63 #include <queue>
  64
  65 namespace caspar { namespace ffmpeg {
  66
  67 struct ffmpeg_producer : public core::frame_producer_base
  68 {
  69         monitor::basic_subject                                                  event_subject_;
  70         const std::wstring                                                              filename_;
  71
  72         const spl::shared_ptr<diagnostics::graph>               graph_;
  73
  74         const spl::shared_ptr<core::frame_factory>              frame_factory_;
  75         const core::video_format_desc                                   format_desc_;
  76
  77         input                                                                                   input_;
  78
  79         const double                                                                    fps_;
  80         const uint32_t                                                                  start_;
  81
  82         std::unique_ptr<video_decoder>                                  video_decoder_;
  83         std::unique_ptr<audio_decoder>                                  audio_decoder_;
  84         frame_muxer                                                                             muxer_;
  85
  86         core::draw_frame                                                                last_frame_;
  87
  88         boost::optional<uint32_t>                                               seek_target_;
  89
  90 public:
  91         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory,
  92                                                          const core::video_format_desc& format_desc,
  93                                                          const std::wstring& filename,
  94                                                          const std::wstring& filter,
  95                                                          bool loop,
  96                                                          uint32_t start,
  97                                                          uint32_t length)
  98                 : filename_(filename)
  99                 , frame_factory_(frame_factory)
 100                 , format_desc_(format_desc)
 101                 , input_(graph_, filename_, loop, start, length)
 102                 , fps_(read_fps(input_.context(), format_desc_.fps))
 103                 , muxer_(fps_, frame_factory, format_desc_, filter)
 104                 , start_(start)
 105                 , last_frame_(core::draw_frame::empty())
 106         {
 107                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 108                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));
 109                 diagnostics::register_graph(graph_);
 110
 111
 112                 try
 113                 {
 114                         video_decoder_.reset(new video_decoder(input_));
 115                         video_decoder_->subscribe(event_subject_);
 116
 117                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();
 118                 }
 119                 catch(averror_stream_not_found&)
 120                 {
 121                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";
 122                 }
 123                 catch(...)
 124                 {
 125                         CASPAR_LOG_CURRENT_EXCEPTION();
 126                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";
 127                 }
 128
 129                 try
 130                 {
 131                         audio_decoder_ .reset(new audio_decoder(input_, format_desc_));
 132                         audio_decoder_->subscribe(event_subject_);
 133
 134                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();
 135                 }
 136                 catch(averror_stream_not_found&)
 137                 {
 138                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";
 139                 }
 140                 catch(...)
 141                 {
 142                         CASPAR_LOG_CURRENT_EXCEPTION();
 143                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";
 144                 }
 145
 146                 decode_next_frame();
 147
 148                 CASPAR_LOG(info) << print() << L" Initialized";
 149         }
 150
 151         // frame_producer
 152
 153         core::draw_frame receive_impl() override
 154         {
 155                 auto frame = core::draw_frame::late();
 156
 157                 boost::timer frame_timer;
 158
 159                 end_seek();
 160
 161                 decode_next_frame();
 162
 163                 if(!muxer_.empty())
 164                 {
 165                         last_frame_ = frame = std::move(muxer_.front());
 166                         muxer_.pop();
 167                 }
 168                 else
 169                         graph_->set_tag("underflow");
 170
 171                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 172                 event_subject_  << monitor::event("profiler/time") % frame_timer.elapsed() % (1.0/format_desc_.fps);
 173
 174                 event_subject_  << monitor::event("file/time")                  % monitor::duration(file_frame_number()/fps_)
 175                                                                                                                                 % monitor::duration(file_nb_frames()/fps_)
 176                                                 << monitor::event("file/frame")                 % static_cast<int32_t>(file_frame_number())
 177                                                                                                                                 % static_cast<int32_t>(file_nb_frames())
 178                                                 << monitor::event("file/fps")                   % fps_
 179                                                 << monitor::event("file/path")                  % filename_
 180                                                 << monitor::event("loop")                               % input_.loop();
 181
 182                 return frame;
 183         }
 184
 185         core::draw_frame last_frame() override
 186         {
 187                 end_seek();
 188                 return core::draw_frame::still(last_frame_);
 189         }
 190
 191         uint32_t nb_frames() const override
 192         {
 193                 if(input_.loop())
 194                         return std::numeric_limits<uint32_t>::max();
 195
 196                 uint32_t nb_frames = file_nb_frames();
 197
 198                 nb_frames = std::min(input_.length(), nb_frames);
 199                 nb_frames = muxer_.calc_nb_frames(nb_frames);
 200
 201                 return nb_frames > start_ ? nb_frames - start_ : 0;
 202         }
 203
 204         uint32_t file_nb_frames() const
 205         {
 206                 uint32_t file_nb_frames = 0;
 207                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);
 208                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);
 209                 return file_nb_frames;
 210         }
 211
 212         uint32_t file_frame_number() const
 213         {
 214                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;
 215         }
 216
 217         boost::unique_future<std::wstring> call(const std::wstring& param) override
 218         {
 219                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);
 220                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);
 221                 static const boost::wregex length_exp(L"LENGTH\\s+(?<VALUE>\\d+)?", boost::regex::icase);
 222                 static const boost::wregex start_exp(L"START\\s+(?<VALUE>\\d+)?", boost::regex::icase);
 223
 224                 std::wstring result;
 225
 226                 boost::wsmatch what;
 227                 if(boost::regex_match(param, what, loop_exp))
 228                 {
 229                         auto value = what["VALUE"].str();
 230                         if(!value.empty())
 231                                 input_.loop(boost::lexical_cast<bool>(value));
 232                         result = boost::lexical_cast<std::wstring>(loop());
 233                 }
 234                 else if(boost::regex_match(param, what, seek_exp))
 235                 {
 236                         auto value = what["VALUE"].str();
 237                         seek(boost::lexical_cast<uint32_t>(value));
 238                 }
 239                 else if(boost::regex_match(param, what, length_exp))
 240                 {
 241                         auto value = what["VALUE"].str();
 242                         if(!value.empty())
 243                                 length(boost::lexical_cast<uint32_t>(value));
 244                         result = boost::lexical_cast<std::wstring>(length());
 245                 }
 246                 else if(boost::regex_match(param, what, start_exp))
 247                 {
 248                         auto value = what["VALUE"].str();
 249                         if(!value.empty())
 250                                 start(boost::lexical_cast<uint32_t>(value));
 251                         result = boost::lexical_cast<std::wstring>(start());
 252                 }
 253                 else
 254                         CASPAR_THROW_EXCEPTION(invalid_argument());
 255
 256                 return async(launch::deferred, [=]{return result;});
 257         }
 258
 259         std::wstring print() const override
 260         {
 261                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|"
 262                                                   + print_mode() + L"|"
 263                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";
 264         }
 265
 266         std::wstring name() const override
 267         {
 268                 return L"ffmpeg";
 269         }
 270
 271         boost::property_tree::wptree info() const override
 272         {
 273                 boost::property_tree::wptree info;
 274                 info.add(L"type",                               L"ffmpeg");
 275                 info.add(L"filename",                   filename_);
 276                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);
 277                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);
 278                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : 0);
 279                 info.add(L"fps",                                fps_);
 280                 info.add(L"loop",                               input_.loop());
 281                 info.add(L"frame-number",               frame_number());
 282                 auto nb_frames2 = nb_frames();
 283                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);
 284                 info.add(L"file-frame-number",  file_frame_number());
 285                 info.add(L"file-nb-frames",             file_nb_frames());
 286                 return info;
 287         }
 288
 289         void subscribe(const monitor::observable::observer_ptr& o) override
 290         {
 291                 event_subject_.subscribe(o);
 292         }
 293
 294         void unsubscribe(const monitor::observable::observer_ptr& o) override
 295         {
 296                 event_subject_.unsubscribe(o);
 297         }
 298
 299         // ffmpeg_producer
 300
 301         void end_seek()
 302         {
 303                 for(int n = 0; n < 8 && (last_frame_ == core::draw_frame::empty() || (seek_target_ && file_frame_number() != *seek_target_+2)); ++n)
 304                 {
 305                         decode_next_frame();
 306                         if(!muxer_.empty())
 307                         {
 308                                 last_frame_ = muxer_.front();
 309                                 seek_target_.reset();
 310                         }
 311                 }
 312         }
 313
 314         void loop(bool value)
 315         {
 316                 input_.loop(value);
 317         }
 318
 319         bool loop() const
 320         {
 321                 return input_.loop();
 322         }
 323
 324         void length(uint32_t value)
 325         {
 326                 input_.length(value);
 327         }
 328
 329         uint32_t length()
 330         {
 331                 return input_.length();
 332         }
 333
 334         void start(uint32_t value)
 335         {
 336                 input_.start(value);
 337         }
 338
 339         uint32_t start()
 340         {
 341                 return input_.start();
 342         }
 343
 344         void seek(uint32_t target)
 345         {
 346                 seek_target_ = std::min(target, file_nb_frames());
 347
 348                 input_.seek(*seek_target_);
 349                 muxer_.clear();
 350         }
 351
 352         std::wstring print_mode() const
 353         {
 354                 return ffmpeg::print_mode(video_decoder_ ? video_decoder_->width() : 0,
 355                         video_decoder_ ? video_decoder_->height() : 0,
 356                         fps_,
 357                         video_decoder_ ? !video_decoder_->is_progressive() : false);
 358         }
 359
 360         void decode_next_frame()
 361         {
 362                 for(int n = 0; n < 8 && muxer_.empty(); ++n)
 363                 {
 364                         if(!muxer_.video_ready())
 365                                 muxer_.push_video(video_decoder_ ? (*video_decoder_)() : create_frame());
 366                         if(!muxer_.audio_ready())
 367                                 muxer_.push_audio(audio_decoder_ ? (*audio_decoder_)() : create_frame());
 368                 }
 369                 graph_->set_text(print());
 370         }
 371 };
 372
 373 spl::shared_ptr<core::frame_producer> create_producer(const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::vector<std::wstring>& params)
 374 {
 375         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));
 376
 377         if(filename.empty())
 378                 return core::frame_producer::empty();
 379
 380         auto loop               = boost::range::find(params, L"LOOP") != params.end();
 381         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));
 382         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());
 383         auto filter_str = get_param(L"FILTER", params, L"");
 384
 385         return create_destroy_proxy(spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length)));
 386 }
 387
 388 }}