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/timer.hpp>
  50 #include <boost/filesystem.hpp>
  51 #include <boost/range/algorithm/find_if.hpp>
  52 #include <boost/range/algorithm/find.hpp>
  53 #include <boost/property_tree/ptree.hpp>
  54 #include <boost/regex.hpp>
  55 #include <boost/thread/future.hpp>
  56
  57 #include <tbb/parallel_invoke.h>
  58
  59 #include <limits>
  60 #include <memory>
  61 #include <queue>
  62
  63 namespace caspar { namespace ffmpeg {
  64
  65 std::wstring get_relative_or_original(
  66                 const std::wstring& filename,
  67                 const boost::filesystem::wpath& relative_to)
  68 {
  69         boost::filesystem::wpath file(filename);
  70         auto result = file.filename().wstring();
  71
  72         boost::filesystem::wpath current_path = file;
  73
  74         while (true)
  75         {
  76                 current_path = current_path.parent_path();
  77
  78                 if (boost::filesystem::equivalent(current_path, relative_to))
  79                         break;
  80
  81                 if (current_path.empty())
  82                         return filename;
  83
  84                 result = current_path.filename().wstring() + L"/" + result;
  85         }
  86
  87         return result;
  88 }
  89
  90 struct ffmpeg_producer : public core::frame_producer_base
  91 {
  92         spl::shared_ptr<core::monitor::subject>                 monitor_subject_;
  93         const std::wstring                                                              filename_;
  94         const std::wstring                                                              path_relative_to_media_;
  95
  96         const spl::shared_ptr<diagnostics::graph>               graph_;
  97
  98         const spl::shared_ptr<core::frame_factory>              frame_factory_;
  99         const core::video_format_desc                                   format_desc_;
 100
 101         input                                                                                   input_;
 102
 103         const double                                                                    fps_;
 104         const uint32_t                                                                  start_;
 105
 106         std::unique_ptr<video_decoder>                                  video_decoder_;
 107         std::unique_ptr<audio_decoder>                                  audio_decoder_;
 108         frame_muxer                                                                             muxer_;
 109         core::constraints                                                               constraints_;
 110
 111         core::draw_frame                                                                last_frame_;
 112
 113         boost::optional<uint32_t>                                               seek_target_;
 114
 115 public:
 116         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory,
 117                                                          const core::video_format_desc& format_desc,
 118                                                          const std::wstring& filename,
 119                                                          const std::wstring& filter,
 120                                                          bool loop,
 121                                                          uint32_t start,
 122                                                          uint32_t length)
 123                 : filename_(filename)
 124                 , path_relative_to_media_(get_relative_or_original(filename, env::media_folder()))
 125                 , frame_factory_(frame_factory)
 126                 , format_desc_(format_desc)
 127                 , input_(graph_, filename_, loop, start, length)
 128                 , fps_(read_fps(input_.context(), format_desc_.fps))
 129                 , muxer_(fps_, frame_factory, format_desc_, filter)
 130                 , start_(start)
 131                 , last_frame_(core::draw_frame::empty())
 132         {
 133                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 134                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));
 135                 diagnostics::register_graph(graph_);
 136
 137
 138                 try
 139                 {
 140                         video_decoder_.reset(new video_decoder(input_));
 141                         video_decoder_->monitor_output().attach_parent(monitor_subject_);
 142                         constraints_.width.set(video_decoder_->width());
 143                         constraints_.height.set(video_decoder_->height());
 144
 145                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();
 146                 }
 147                 catch(averror_stream_not_found&)
 148                 {
 149                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";
 150                 }
 151                 catch(...)
 152                 {
 153                         CASPAR_LOG_CURRENT_EXCEPTION();
 154                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";
 155                 }
 156
 157                 try
 158                 {
 159                         audio_decoder_ .reset(new audio_decoder(input_, format_desc_));
 160                         audio_decoder_->monitor_output().attach_parent(monitor_subject_);
 161
 162                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();
 163                 }
 164                 catch(averror_stream_not_found&)
 165                 {
 166                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";
 167                 }
 168                 catch(...)
 169                 {
 170                         CASPAR_LOG_CURRENT_EXCEPTION();
 171                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";
 172                 }
 173
 174                 decode_next_frame();
 175
 176                 CASPAR_LOG(info) << print() << L" Initialized";
 177         }
 178
 179         // frame_producer
 180
 181         core::draw_frame receive_impl() override
 182         {
 183                 auto frame = core::draw_frame::late();
 184
 185                 boost::timer frame_timer;
 186
 187                 end_seek();
 188
 189                 decode_next_frame();
 190
 191                 if(!muxer_.empty())
 192                 {
 193                         last_frame_ = frame = std::move(muxer_.front());
 194                         muxer_.pop();
 195                 }
 196                 else
 197                         graph_->set_tag("underflow");
 198
 199                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 200                 *monitor_subject_
 201                                 << core::monitor::message("/profiler/time")     % frame_timer.elapsed() % (1.0/format_desc_.fps);
 202                 *monitor_subject_
 203                                 << core::monitor::message("/file/time")         % (file_frame_number()/fps_)
 204                                                                                                                         % (file_nb_frames()/fps_)
 205                                 << core::monitor::message("/file/frame")        % static_cast<int32_t>(file_frame_number())
 206                                                                                                                         % static_cast<int32_t>(file_nb_frames())
 207                                 << core::monitor::message("/file/fps")          % fps_
 208                                 << core::monitor::message("/file/path")         % path_relative_to_media_
 209                                 << core::monitor::message("/loop")                      % input_.loop();
 210
 211                 return frame;
 212         }
 213
 214         core::draw_frame last_frame() override
 215         {
 216                 end_seek();
 217                 return core::draw_frame::still(last_frame_);
 218         }
 219
 220         core::constraints& pixel_constraints() override
 221         {
 222                 return constraints_;
 223         }
 224
 225         uint32_t nb_frames() const override
 226         {
 227                 if(input_.loop())
 228                         return std::numeric_limits<uint32_t>::max();
 229
 230                 uint32_t nb_frames = file_nb_frames();
 231
 232                 nb_frames = std::min(input_.length(), nb_frames);
 233                 nb_frames = muxer_.calc_nb_frames(nb_frames);
 234
 235                 return nb_frames > start_ ? nb_frames - start_ : 0;
 236         }
 237
 238         uint32_t file_nb_frames() const
 239         {
 240                 uint32_t file_nb_frames = 0;
 241                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);
 242                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);
 243                 return file_nb_frames;
 244         }
 245
 246         uint32_t file_frame_number() const
 247         {
 248                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;
 249         }
 250
 251         std::future<std::wstring> call(const std::vector<std::wstring>& params) override
 252         {
 253                 static const boost::wregex loop_exp(LR"(LOOP\s*(?<VALUE>\d?)?)", boost::regex::icase);
 254                 static const boost::wregex seek_exp(LR"(SEEK\s+(?<VALUE>\d+))", boost::regex::icase);
 255                 static const boost::wregex length_exp(LR"(LENGTH\s+(?<VALUE>\d+)?)", boost::regex::icase);
 256                 static const boost::wregex start_exp(LR"(START\\s+(?<VALUE>\\d+)?)", boost::regex::icase);
 257
 258                 auto param = boost::algorithm::join(params, L" ");
 259
 260                 std::wstring result;
 261
 262                 boost::wsmatch what;
 263                 if(boost::regex_match(param, what, loop_exp))
 264                 {
 265                         auto value = what["VALUE"].str();
 266                         if(!value.empty())
 267                                 input_.loop(boost::lexical_cast<bool>(value));
 268                         result = boost::lexical_cast<std::wstring>(loop());
 269                 }
 270                 else if(boost::regex_match(param, what, seek_exp))
 271                 {
 272                         auto value = what["VALUE"].str();
 273                         seek(boost::lexical_cast<uint32_t>(value));
 274                 }
 275                 else if(boost::regex_match(param, what, length_exp))
 276                 {
 277                         auto value = what["VALUE"].str();
 278                         if(!value.empty())
 279                                 length(boost::lexical_cast<uint32_t>(value));
 280                         result = boost::lexical_cast<std::wstring>(length());
 281                 }
 282                 else if(boost::regex_match(param, what, start_exp))
 283                 {
 284                         auto value = what["VALUE"].str();
 285                         if(!value.empty())
 286                                 start(boost::lexical_cast<uint32_t>(value));
 287                         result = boost::lexical_cast<std::wstring>(start());
 288                 }
 289                 else
 290                         CASPAR_THROW_EXCEPTION(invalid_argument());
 291
 292                 return make_ready_future(std::move(result));
 293         }
 294
 295         std::wstring print() const override
 296         {
 297                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|"
 298                                                   + print_mode() + L"|"
 299                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";
 300         }
 301
 302         std::wstring name() const override
 303         {
 304                 return L"ffmpeg";
 305         }
 306
 307         boost::property_tree::wptree info() const override
 308         {
 309                 boost::property_tree::wptree info;
 310                 info.add(L"type",                               L"ffmpeg");
 311                 info.add(L"filename",                   filename_);
 312                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);
 313                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);
 314                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : 0);
 315                 info.add(L"fps",                                fps_);
 316                 info.add(L"loop",                               input_.loop());
 317                 info.add(L"frame-number",               frame_number());
 318                 auto nb_frames2 = nb_frames();
 319                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);
 320                 info.add(L"file-frame-number",  file_frame_number());
 321                 info.add(L"file-nb-frames",             file_nb_frames());
 322                 return info;
 323         }
 324
 325         core::monitor::subject& monitor_output()
 326         {
 327                 return *monitor_subject_;
 328         }
 329
 330         // ffmpeg_producer
 331
 332         void end_seek()
 333         {
 334                 for(int n = 0; n < 8 && (last_frame_ == core::draw_frame::empty() || (seek_target_ && file_frame_number() != *seek_target_+2)); ++n)
 335                 {
 336                         decode_next_frame();
 337                         if(!muxer_.empty())
 338                         {
 339                                 last_frame_ = muxer_.front();
 340                                 seek_target_.reset();
 341                         }
 342                 }
 343         }
 344
 345         void loop(bool value)
 346         {
 347                 input_.loop(value);
 348         }
 349
 350         bool loop() const
 351         {
 352                 return input_.loop();
 353         }
 354
 355         void length(uint32_t value)
 356         {
 357                 input_.length(value);
 358         }
 359
 360         uint32_t length()
 361         {
 362                 return input_.length();
 363         }
 364
 365         void start(uint32_t value)
 366         {
 367                 input_.start(value);
 368         }
 369
 370         uint32_t start()
 371         {
 372                 return input_.start();
 373         }
 374
 375         void seek(uint32_t target)
 376         {
 377                 seek_target_ = std::min(target, file_nb_frames());
 378
 379                 input_.seek(*seek_target_);
 380                 muxer_.clear();
 381         }
 382
 383         std::wstring print_mode() const
 384         {
 385                 return ffmpeg::print_mode(video_decoder_ ? video_decoder_->width() : 0,
 386                         video_decoder_ ? video_decoder_->height() : 0,
 387                         fps_,
 388                         video_decoder_ ? !video_decoder_->is_progressive() : false);
 389         }
 390
 391         void decode_next_frame()
 392         {
 393                 for(int n = 0; n < 8 && muxer_.empty(); ++n)
 394                 {
 395                         if(!muxer_.video_ready())
 396                                 muxer_.push_video(video_decoder_ ? (*video_decoder_)() : create_frame());
 397                         if(!muxer_.audio_ready())
 398                                 muxer_.push_audio(audio_decoder_ ? (*audio_decoder_)() : create_frame());
 399                 }
 400                 graph_->set_text(print());
 401         }
 402 };
 403
 404 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)
 405 {
 406         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));
 407
 408         if(filename.empty())
 409                 return core::frame_producer::empty();
 410
 411         bool loop               = contains_param(L"LOOP", params);
 412         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));
 413         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());
 414         auto filter_str = get_param(L"FILTER", params, L"");
 415
 416         return create_destroy_proxy(spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length)));
 417 }
 418
 419 }}