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         core::constraints                                                               constraints_;
  86
  87         core::draw_frame                                                                last_frame_;
  88
  89         boost::optional<uint32_t>                                               seek_target_;
  90
  91 public:
  92         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory,
  93                                                          const core::video_format_desc& format_desc,
  94                                                          const std::wstring& filename,
  95                                                          const std::wstring& filter,
  96                                                          bool loop,
  97                                                          uint32_t start,
  98                                                          uint32_t length)
  99                 : filename_(filename)
 100                 , frame_factory_(frame_factory)
 101                 , format_desc_(format_desc)
 102                 , input_(graph_, filename_, loop, start, length)
 103                 , fps_(read_fps(input_.context(), format_desc_.fps))
 104                 , muxer_(fps_, frame_factory, format_desc_, filter)
 105                 , start_(start)
 106                 , last_frame_(core::draw_frame::empty())
 107         {
 108                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 109                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));
 110                 diagnostics::register_graph(graph_);
 111
 112
 113                 try
 114                 {
 115                         video_decoder_.reset(new video_decoder(input_));
 116                         video_decoder_->subscribe(event_subject_);
 117                         constraints_.width.set(video_decoder_->width());
 118                         constraints_.height.set(video_decoder_->height());
 119
 120                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();
 121                 }
 122                 catch(averror_stream_not_found&)
 123                 {
 124                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";
 125                 }
 126                 catch(...)
 127                 {
 128                         CASPAR_LOG_CURRENT_EXCEPTION();
 129                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";
 130                 }
 131
 132                 try
 133                 {
 134                         audio_decoder_ .reset(new audio_decoder(input_, format_desc_));
 135                         audio_decoder_->subscribe(event_subject_);
 136
 137                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();
 138                 }
 139                 catch(averror_stream_not_found&)
 140                 {
 141                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";
 142                 }
 143                 catch(...)
 144                 {
 145                         CASPAR_LOG_CURRENT_EXCEPTION();
 146                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";
 147                 }
 148
 149                 decode_next_frame();
 150
 151                 CASPAR_LOG(info) << print() << L" Initialized";
 152         }
 153
 154         // frame_producer
 155
 156         core::draw_frame receive_impl() override
 157         {
 158                 auto frame = core::draw_frame::late();
 159
 160                 boost::timer frame_timer;
 161
 162                 end_seek();
 163
 164                 decode_next_frame();
 165
 166                 if(!muxer_.empty())
 167                 {
 168                         last_frame_ = frame = std::move(muxer_.front());
 169                         muxer_.pop();
 170                 }
 171                 else
 172                         graph_->set_tag("underflow");
 173
 174                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 175                 event_subject_  << monitor::event("profiler/time") % frame_timer.elapsed() % (1.0/format_desc_.fps);
 176
 177                 event_subject_  << monitor::event("file/time")                  % monitor::duration(file_frame_number()/fps_)
 178                                                                                                                                 % monitor::duration(file_nb_frames()/fps_)
 179                                                 << monitor::event("file/frame")                 % static_cast<int32_t>(file_frame_number())
 180                                                                                                                                 % static_cast<int32_t>(file_nb_frames())
 181                                                 << monitor::event("file/fps")                   % fps_
 182                                                 << monitor::event("file/path")                  % filename_
 183                                                 << monitor::event("loop")                               % input_.loop();
 184
 185                 return frame;
 186         }
 187
 188         core::draw_frame last_frame() override
 189         {
 190                 end_seek();
 191                 return core::draw_frame::still(last_frame_);
 192         }
 193
 194         core::constraints& pixel_constraints() override
 195         {
 196                 return constraints_;
 197         }
 198
 199         uint32_t nb_frames() const override
 200         {
 201                 if(input_.loop())
 202                         return std::numeric_limits<uint32_t>::max();
 203
 204                 uint32_t nb_frames = file_nb_frames();
 205
 206                 nb_frames = std::min(input_.length(), nb_frames);
 207                 nb_frames = muxer_.calc_nb_frames(nb_frames);
 208
 209                 return nb_frames > start_ ? nb_frames - start_ : 0;
 210         }
 211
 212         uint32_t file_nb_frames() const
 213         {
 214                 uint32_t file_nb_frames = 0;
 215                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);
 216                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);
 217                 return file_nb_frames;
 218         }
 219
 220         uint32_t file_frame_number() const
 221         {
 222                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;
 223         }
 224
 225         boost::unique_future<std::wstring> call(const std::vector<std::wstring>& params) override
 226         {
 227                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);
 228                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);
 229                 static const boost::wregex length_exp(L"LENGTH\\s+(?<VALUE>\\d+)?", boost::regex::icase);
 230                 static const boost::wregex start_exp(L"START\\s+(?<VALUE>\\d+)?", boost::regex::icase);
 231
 232                 auto param = boost::algorithm::join(params, L" ");
 233
 234                 std::wstring result;
 235
 236                 boost::wsmatch what;
 237                 if(boost::regex_match(param, what, loop_exp))
 238                 {
 239                         auto value = what["VALUE"].str();
 240                         if(!value.empty())
 241                                 input_.loop(boost::lexical_cast<bool>(value));
 242                         result = boost::lexical_cast<std::wstring>(loop());
 243                 }
 244                 else if(boost::regex_match(param, what, seek_exp))
 245                 {
 246                         auto value = what["VALUE"].str();
 247                         seek(boost::lexical_cast<uint32_t>(value));
 248                 }
 249                 else if(boost::regex_match(param, what, length_exp))
 250                 {
 251                         auto value = what["VALUE"].str();
 252                         if(!value.empty())
 253                                 length(boost::lexical_cast<uint32_t>(value));
 254                         result = boost::lexical_cast<std::wstring>(length());
 255                 }
 256                 else if(boost::regex_match(param, what, start_exp))
 257                 {
 258                         auto value = what["VALUE"].str();
 259                         if(!value.empty())
 260                                 start(boost::lexical_cast<uint32_t>(value));
 261                         result = boost::lexical_cast<std::wstring>(start());
 262                 }
 263                 else
 264                         CASPAR_THROW_EXCEPTION(invalid_argument());
 265
 266                 return async(launch::deferred, [=]{return result;});
 267         }
 268
 269         std::wstring print() const override
 270         {
 271                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|"
 272                                                   + print_mode() + L"|"
 273                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";
 274         }
 275
 276         std::wstring name() const override
 277         {
 278                 return L"ffmpeg";
 279         }
 280
 281         boost::property_tree::wptree info() const override
 282         {
 283                 boost::property_tree::wptree info;
 284                 info.add(L"type",                               L"ffmpeg");
 285                 info.add(L"filename",                   filename_);
 286                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);
 287                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);
 288                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : 0);
 289                 info.add(L"fps",                                fps_);
 290                 info.add(L"loop",                               input_.loop());
 291                 info.add(L"frame-number",               frame_number());
 292                 auto nb_frames2 = nb_frames();
 293                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);
 294                 info.add(L"file-frame-number",  file_frame_number());
 295                 info.add(L"file-nb-frames",             file_nb_frames());
 296                 return info;
 297         }
 298
 299         void subscribe(const monitor::observable::observer_ptr& o) override
 300         {
 301                 event_subject_.subscribe(o);
 302         }
 303
 304         void unsubscribe(const monitor::observable::observer_ptr& o) override
 305         {
 306                 event_subject_.unsubscribe(o);
 307         }
 308
 309         // ffmpeg_producer
 310
 311         void end_seek()
 312         {
 313                 for(int n = 0; n < 8 && (last_frame_ == core::draw_frame::empty() || (seek_target_ && file_frame_number() != *seek_target_+2)); ++n)
 314                 {
 315                         decode_next_frame();
 316                         if(!muxer_.empty())
 317                         {
 318                                 last_frame_ = muxer_.front();
 319                                 seek_target_.reset();
 320                         }
 321                 }
 322         }
 323
 324         void loop(bool value)
 325         {
 326                 input_.loop(value);
 327         }
 328
 329         bool loop() const
 330         {
 331                 return input_.loop();
 332         }
 333
 334         void length(uint32_t value)
 335         {
 336                 input_.length(value);
 337         }
 338
 339         uint32_t length()
 340         {
 341                 return input_.length();
 342         }
 343
 344         void start(uint32_t value)
 345         {
 346                 input_.start(value);
 347         }
 348
 349         uint32_t start()
 350         {
 351                 return input_.start();
 352         }
 353
 354         void seek(uint32_t target)
 355         {
 356                 seek_target_ = std::min(target, file_nb_frames());
 357
 358                 input_.seek(*seek_target_);
 359                 muxer_.clear();
 360         }
 361
 362         std::wstring print_mode() const
 363         {
 364                 return ffmpeg::print_mode(video_decoder_ ? video_decoder_->width() : 0,
 365                         video_decoder_ ? video_decoder_->height() : 0,
 366                         fps_,
 367                         video_decoder_ ? !video_decoder_->is_progressive() : false);
 368         }
 369
 370         void decode_next_frame()
 371         {
 372                 for(int n = 0; n < 8 && muxer_.empty(); ++n)
 373                 {
 374                         if(!muxer_.video_ready())
 375                                 muxer_.push_video(video_decoder_ ? (*video_decoder_)() : create_frame());
 376                         if(!muxer_.audio_ready())
 377                                 muxer_.push_audio(audio_decoder_ ? (*audio_decoder_)() : create_frame());
 378                 }
 379                 graph_->set_text(print());
 380         }
 381 };
 382
 383 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)
 384 {
 385         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));
 386
 387         if(filename.empty())
 388                 return core::frame_producer::empty();
 389
 390         auto loop               = boost::range::find(params, L"LOOP") != params.end();
 391         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));
 392         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());
 393         auto filter_str = get_param(L"FILTER", params, L"");
 394
 395         return create_destroy_proxy(spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length)));
 396 }
 397
 398 }}