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 std::wstring get_relative_or_original(
  68                 const std::wstring& filename,
  69                 const boost::filesystem::wpath& relative_to)
  70 {
  71         boost::filesystem::wpath file(filename);
  72         auto result = file.filename().wstring();
  73
  74         boost::filesystem::wpath current_path = file;
  75
  76         while (true)
  77         {
  78                 current_path = current_path.parent_path();
  79
  80                 if (boost::filesystem::equivalent(current_path, relative_to))
  81                         break;
  82
  83                 if (current_path.empty())
  84                         return filename;
  85
  86                 result = current_path.filename().wstring() + L"/" + result;
  87         }
  88
  89         return result;
  90 }
  91
  92 struct ffmpeg_producer : public core::frame_producer_base
  93 {
  94         spl::shared_ptr<core::monitor::subject>                 monitor_subject_;
  95         const std::wstring                                                              filename_;
  96         const std::wstring                                                              path_relative_to_media_;
  97
  98         const spl::shared_ptr<diagnostics::graph>               graph_;
  99
 100         const spl::shared_ptr<core::frame_factory>              frame_factory_;
 101         const core::video_format_desc                                   format_desc_;
 102
 103         input                                                                                   input_;
 104
 105         const double                                                                    fps_;
 106         const uint32_t                                                                  start_;
 107
 108         std::unique_ptr<video_decoder>                                  video_decoder_;
 109         std::unique_ptr<audio_decoder>                                  audio_decoder_;
 110         frame_muxer                                                                             muxer_;
 111         core::constraints                                                               constraints_;
 112
 113         core::draw_frame                                                                last_frame_;
 114
 115         boost::optional<uint32_t>                                               seek_target_;
 116
 117 public:
 118         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory,
 119                                                          const core::video_format_desc& format_desc,
 120                                                          const std::wstring& filename,
 121                                                          const std::wstring& filter,
 122                                                          bool loop,
 123                                                          uint32_t start,
 124                                                          uint32_t length)
 125                 : filename_(filename)
 126                 , path_relative_to_media_(get_relative_or_original(filename, env::media_folder()))
 127                 , frame_factory_(frame_factory)
 128                 , format_desc_(format_desc)
 129                 , input_(graph_, filename_, loop, start, length)
 130                 , fps_(read_fps(input_.context(), format_desc_.fps))
 131                 , muxer_(fps_, frame_factory, format_desc_, filter)
 132                 , start_(start)
 133                 , last_frame_(core::draw_frame::empty())
 134         {
 135                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 136                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));
 137                 diagnostics::register_graph(graph_);
 138
 139
 140                 try
 141                 {
 142                         video_decoder_.reset(new video_decoder(input_));
 143                         video_decoder_->monitor_output().attach_parent(monitor_subject_);
 144                         constraints_.width.set(video_decoder_->width());
 145                         constraints_.height.set(video_decoder_->height());
 146
 147                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();
 148                 }
 149                 catch(averror_stream_not_found&)
 150                 {
 151                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";
 152                 }
 153                 catch(...)
 154                 {
 155                         CASPAR_LOG_CURRENT_EXCEPTION();
 156                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";
 157                 }
 158
 159                 try
 160                 {
 161                         audio_decoder_ .reset(new audio_decoder(input_, format_desc_));
 162                         audio_decoder_->monitor_output().attach_parent(monitor_subject_);
 163
 164                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();
 165                 }
 166                 catch(averror_stream_not_found&)
 167                 {
 168                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";
 169                 }
 170                 catch(...)
 171                 {
 172                         CASPAR_LOG_CURRENT_EXCEPTION();
 173                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";
 174                 }
 175
 176                 decode_next_frame();
 177
 178                 CASPAR_LOG(info) << print() << L" Initialized";
 179         }
 180
 181         // frame_producer
 182
 183         core::draw_frame receive_impl() override
 184         {
 185                 auto frame = core::draw_frame::late();
 186
 187                 boost::timer frame_timer;
 188
 189                 end_seek();
 190
 191                 decode_next_frame();
 192
 193                 if(!muxer_.empty())
 194                 {
 195                         last_frame_ = frame = std::move(muxer_.front());
 196                         muxer_.pop();
 197                 }
 198                 else
 199                         graph_->set_tag("underflow");
 200
 201                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 202                 *monitor_subject_
 203                                 << core::monitor::message("/profiler/time")     % frame_timer.elapsed() % (1.0/format_desc_.fps);
 204                 *monitor_subject_
 205                                 << core::monitor::message("/file/time")         % (file_frame_number()/fps_)
 206                                                                                                                         % (file_nb_frames()/fps_)
 207                                 << core::monitor::message("/file/frame")        % static_cast<int32_t>(file_frame_number())
 208                                                                                                                         % static_cast<int32_t>(file_nb_frames())
 209                                 << core::monitor::message("/file/fps")          % fps_
 210                                 << core::monitor::message("/file/path")         % path_relative_to_media_
 211                                 << core::monitor::message("/loop")                      % input_.loop();
 212
 213                 return frame;
 214         }
 215
 216         core::draw_frame last_frame() override
 217         {
 218                 end_seek();
 219                 return core::draw_frame::still(last_frame_);
 220         }
 221
 222         core::constraints& pixel_constraints() override
 223         {
 224                 return constraints_;
 225         }
 226
 227         uint32_t nb_frames() const override
 228         {
 229                 if(input_.loop())
 230                         return std::numeric_limits<uint32_t>::max();
 231
 232                 uint32_t nb_frames = file_nb_frames();
 233
 234                 nb_frames = std::min(input_.length(), nb_frames);
 235                 nb_frames = muxer_.calc_nb_frames(nb_frames);
 236
 237                 return nb_frames > start_ ? nb_frames - start_ : 0;
 238         }
 239
 240         uint32_t file_nb_frames() const
 241         {
 242                 uint32_t file_nb_frames = 0;
 243                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);
 244                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);
 245                 return file_nb_frames;
 246         }
 247
 248         uint32_t file_frame_number() const
 249         {
 250                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;
 251         }
 252
 253         std::future<std::wstring> call(const std::vector<std::wstring>& params) override
 254         {
 255                 static const boost::wregex loop_exp(L"LOOP\\s*(?<VALUE>\\d?)?", boost::regex::icase);
 256                 static const boost::wregex seek_exp(L"SEEK\\s+(?<VALUE>\\d+)", boost::regex::icase);
 257                 static const boost::wregex length_exp(L"LENGTH\\s+(?<VALUE>\\d+)?", boost::regex::icase);
 258                 static const boost::wregex start_exp(L"START\\s+(?<VALUE>\\d+)?", boost::regex::icase);
 259
 260                 auto param = boost::algorithm::join(params, L" ");
 261
 262                 std::wstring result;
 263
 264                 boost::wsmatch what;
 265                 if(boost::regex_match(param, what, loop_exp))
 266                 {
 267                         auto value = what["VALUE"].str();
 268                         if(!value.empty())
 269                                 input_.loop(boost::lexical_cast<bool>(value));
 270                         result = boost::lexical_cast<std::wstring>(loop());
 271                 }
 272                 else if(boost::regex_match(param, what, seek_exp))
 273                 {
 274                         auto value = what["VALUE"].str();
 275                         seek(boost::lexical_cast<uint32_t>(value));
 276                 }
 277                 else if(boost::regex_match(param, what, length_exp))
 278                 {
 279                         auto value = what["VALUE"].str();
 280                         if(!value.empty())
 281                                 length(boost::lexical_cast<uint32_t>(value));
 282                         result = boost::lexical_cast<std::wstring>(length());
 283                 }
 284                 else if(boost::regex_match(param, what, start_exp))
 285                 {
 286                         auto value = what["VALUE"].str();
 287                         if(!value.empty())
 288                                 start(boost::lexical_cast<uint32_t>(value));
 289                         result = boost::lexical_cast<std::wstring>(start());
 290                 }
 291                 else
 292                         CASPAR_THROW_EXCEPTION(invalid_argument());
 293
 294                 return make_ready_future(std::move(result));
 295         }
 296
 297         std::wstring print() const override
 298         {
 299                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|"
 300                                                   + print_mode() + L"|"
 301                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";
 302         }
 303
 304         std::wstring name() const override
 305         {
 306                 return L"ffmpeg";
 307         }
 308
 309         boost::property_tree::wptree info() const override
 310         {
 311                 boost::property_tree::wptree info;
 312                 info.add(L"type",                               L"ffmpeg");
 313                 info.add(L"filename",                   filename_);
 314                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);
 315                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);
 316                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : 0);
 317                 info.add(L"fps",                                fps_);
 318                 info.add(L"loop",                               input_.loop());
 319                 info.add(L"frame-number",               frame_number());
 320                 auto nb_frames2 = nb_frames();
 321                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);
 322                 info.add(L"file-frame-number",  file_frame_number());
 323                 info.add(L"file-nb-frames",             file_nb_frames());
 324                 return info;
 325         }
 326
 327         core::monitor::subject& monitor_output()
 328         {
 329                 return *monitor_subject_;
 330         }
 331
 332         // ffmpeg_producer
 333
 334         void end_seek()
 335         {
 336                 for(int n = 0; n < 8 && (last_frame_ == core::draw_frame::empty() || (seek_target_ && file_frame_number() != *seek_target_+2)); ++n)
 337                 {
 338                         decode_next_frame();
 339                         if(!muxer_.empty())
 340                         {
 341                                 last_frame_ = muxer_.front();
 342                                 seek_target_.reset();
 343                         }
 344                 }
 345         }
 346
 347         void loop(bool value)
 348         {
 349                 input_.loop(value);
 350         }
 351
 352         bool loop() const
 353         {
 354                 return input_.loop();
 355         }
 356
 357         void length(uint32_t value)
 358         {
 359                 input_.length(value);
 360         }
 361
 362         uint32_t length()
 363         {
 364                 return input_.length();
 365         }
 366
 367         void start(uint32_t value)
 368         {
 369                 input_.start(value);
 370         }
 371
 372         uint32_t start()
 373         {
 374                 return input_.start();
 375         }
 376
 377         void seek(uint32_t target)
 378         {
 379                 seek_target_ = std::min(target, file_nb_frames());
 380
 381                 input_.seek(*seek_target_);
 382                 muxer_.clear();
 383         }
 384
 385         std::wstring print_mode() const
 386         {
 387                 return ffmpeg::print_mode(video_decoder_ ? video_decoder_->width() : 0,
 388                         video_decoder_ ? video_decoder_->height() : 0,
 389                         fps_,
 390                         video_decoder_ ? !video_decoder_->is_progressive() : false);
 391         }
 392
 393         void decode_next_frame()
 394         {
 395                 for(int n = 0; n < 8 && muxer_.empty(); ++n)
 396                 {
 397                         if(!muxer_.video_ready())
 398                                 muxer_.push_video(video_decoder_ ? (*video_decoder_)() : create_frame());
 399                         if(!muxer_.audio_ready())
 400                                 muxer_.push_audio(audio_decoder_ ? (*audio_decoder_)() : create_frame());
 401                 }
 402                 graph_->set_text(print());
 403         }
 404 };
 405
 406 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)
 407 {
 408         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));
 409
 410         if(filename.empty())
 411                 return core::frame_producer::empty();
 412
 413         bool loop               = contains_param(L"LOOP", params);
 414         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));
 415         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());
 416         auto filter_str = get_param(L"FILTER", params, L"");
 417
 418         return create_destroy_proxy(spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length)));
 419 }
 420
 421 }}