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