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/foreach.hpp>
  51 #include <boost/filesystem.hpp>
  52 #include <boost/range/algorithm/find_if.hpp>
  53 #include <boost/range/algorithm/find.hpp>
  54 #include <boost/property_tree/ptree.hpp>
  55 #include <boost/regex.hpp>
  56 #include <boost/thread/future.hpp>
  57
  58 #include <tbb/parallel_invoke.h>
  59
  60 #include <limits>
  61 #include <memory>
  62 #include <queue>
  63
  64 namespace caspar { namespace ffmpeg {
  65
  66 std::wstring get_relative_or_original(
  67                 const std::wstring& filename,
  68                 const boost::filesystem::wpath& relative_to)
  69 {
  70         boost::filesystem::wpath file(filename);
  71         auto result = file.filename().wstring();
  72
  73         boost::filesystem::wpath current_path = file;
  74
  75         while (true)
  76         {
  77                 current_path = current_path.parent_path();
  78
  79                 if (boost::filesystem::equivalent(current_path, relative_to))
  80                         break;
  81
  82                 if (current_path.empty())
  83                         return filename;
  84
  85                 result = current_path.filename().wstring() + L"/" + result;
  86         }
  87
  88         return result;
  89 }
  90
  91 struct ffmpeg_producer : public core::frame_producer_base
  92 {
  93         spl::shared_ptr<core::monitor::subject>                 monitor_subject_;
  94         const std::wstring                                                              filename_;
  95         const std::wstring                                                              path_relative_to_media_;
  96
  97         const spl::shared_ptr<diagnostics::graph>               graph_;
  98
  99         const spl::shared_ptr<core::frame_factory>              frame_factory_;
 100         const core::video_format_desc                                   format_desc_;
 101
 102         input                                                                                   input_;
 103
 104         const double                                                                    fps_;
 105         const uint32_t                                                                  start_;
 106
 107         std::unique_ptr<video_decoder>                                  video_decoder_;
 108         std::unique_ptr<audio_decoder>                                  audio_decoder_;
 109         frame_muxer                                                                             muxer_;
 110         core::constraints                                                               constraints_;
 111
 112         core::draw_frame                                                                last_frame_;
 113
 114         boost::optional<uint32_t>                                               seek_target_;
 115
 116 public:
 117         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory,
 118                                                          const core::video_format_desc& format_desc,
 119                                                          const std::wstring& filename,
 120                                                          const std::wstring& filter,
 121                                                          bool loop,
 122                                                          uint32_t start,
 123                                                          uint32_t length)
 124                 : filename_(filename)
 125                 , path_relative_to_media_(get_relative_or_original(filename, env::media_folder()))
 126                 , frame_factory_(frame_factory)
 127                 , format_desc_(format_desc)
 128                 , input_(graph_, filename_, loop, start, length)
 129                 , fps_(read_fps(input_.context(), format_desc_.fps))
 130                 , muxer_(fps_, frame_factory, format_desc_, filter)
 131                 , start_(start)
 132                 , last_frame_(core::draw_frame::empty())
 133         {
 134                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 135                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));
 136                 diagnostics::register_graph(graph_);
 137
 138
 139                 try
 140                 {
 141                         video_decoder_.reset(new video_decoder(input_));
 142                         video_decoder_->monitor_output().attach_parent(monitor_subject_);
 143                         constraints_.width.set(video_decoder_->width());
 144                         constraints_.height.set(video_decoder_->height());
 145
 146                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();
 147                 }
 148                 catch(averror_stream_not_found&)
 149                 {
 150                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";
 151                 }
 152                 catch(...)
 153                 {
 154                         CASPAR_LOG_CURRENT_EXCEPTION();
 155                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";
 156                 }
 157
 158                 try
 159                 {
 160                         audio_decoder_ .reset(new audio_decoder(input_, format_desc_));
 161                         audio_decoder_->monitor_output().attach_parent(monitor_subject_);
 162
 163                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();
 164                 }
 165                 catch(averror_stream_not_found&)
 166                 {
 167                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";
 168                 }
 169                 catch(...)
 170                 {
 171                         CASPAR_LOG_CURRENT_EXCEPTION();
 172                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";
 173                 }
 174
 175                 decode_next_frame();
 176
 177                 CASPAR_LOG(info) << print() << L" Initialized";
 178         }
 179
 180         // frame_producer
 181
 182         core::draw_frame receive_impl() override
 183         {
 184                 auto frame = core::draw_frame::late();
 185
 186                 boost::timer frame_timer;
 187
 188                 end_seek();
 189
 190                 decode_next_frame();
 191
 192                 if(!muxer_.empty())
 193                 {
 194                         last_frame_ = frame = std::move(muxer_.front());
 195                         muxer_.pop();
 196                 }
 197                 else
 198                         graph_->set_tag("underflow");
 199
 200                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 201                 *monitor_subject_
 202                                 << core::monitor::message("/profiler/time")     % frame_timer.elapsed() % (1.0/format_desc_.fps);
 203                 *monitor_subject_
 204                                 << core::monitor::message("/file/time")         % (file_frame_number()/fps_)
 205                                                                                                                         % (file_nb_frames()/fps_)
 206                                 << core::monitor::message("/file/frame")        % static_cast<int32_t>(file_frame_number())
 207                                                                                                                         % static_cast<int32_t>(file_nb_frames())
 208                                 << core::monitor::message("/file/fps")          % fps_
 209                                 << core::monitor::message("/file/path")         % path_relative_to_media_
 210                                 << core::monitor::message("/loop")                      % input_.loop();
 211
 212                 return frame;
 213         }
 214
 215         core::draw_frame last_frame() override
 216         {
 217                 end_seek();
 218                 return core::draw_frame::still(last_frame_);
 219         }
 220
 221         core::constraints& pixel_constraints() override
 222         {
 223                 return constraints_;
 224         }
 225
 226         uint32_t nb_frames() const override
 227         {
 228                 if(input_.loop())
 229                         return std::numeric_limits<uint32_t>::max();
 230
 231                 uint32_t nb_frames = file_nb_frames();
 232
 233                 nb_frames = std::min(input_.length(), nb_frames);
 234                 nb_frames = muxer_.calc_nb_frames(nb_frames);
 235
 236                 return nb_frames > start_ ? nb_frames - start_ : 0;
 237         }
 238
 239         uint32_t file_nb_frames() const
 240         {
 241                 uint32_t file_nb_frames = 0;
 242                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);
 243                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);
 244                 return file_nb_frames;
 245         }
 246
 247         uint32_t file_frame_number() const
 248         {
 249                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;
 250         }
 251
 252         std::future<std::wstring> call(const std::vector<std::wstring>& params) override
 253         {
 254                 static const boost::wregex loop_exp(LR"(LOOP\s*(?<VALUE>\d?)?)", boost::regex::icase);
 255                 static const boost::wregex seek_exp(LR"(SEEK\s+(?<VALUE>\d+))", boost::regex::icase);
 256                 static const boost::wregex length_exp(LR"(LENGTH\s+(?<VALUE>\d+)?)", boost::regex::icase);
 257                 static const boost::wregex start_exp(LR"(START\\s+(?<VALUE>\\d+)?)", boost::regex::icase);
 258
 259                 auto param = boost::algorithm::join(params, L" ");
 260
 261                 std::wstring result;
 262
 263                 boost::wsmatch what;
 264                 if(boost::regex_match(param, what, loop_exp))
 265                 {
 266                         auto value = what["VALUE"].str();
 267                         if(!value.empty())
 268                                 input_.loop(boost::lexical_cast<bool>(value));
 269                         result = boost::lexical_cast<std::wstring>(loop());
 270                 }
 271                 else if(boost::regex_match(param, what, seek_exp))
 272                 {
 273                         auto value = what["VALUE"].str();
 274                         seek(boost::lexical_cast<uint32_t>(value));
 275                 }
 276                 else if(boost::regex_match(param, what, length_exp))
 277                 {
 278                         auto value = what["VALUE"].str();
 279                         if(!value.empty())
 280                                 length(boost::lexical_cast<uint32_t>(value));
 281                         result = boost::lexical_cast<std::wstring>(length());
 282                 }
 283                 else if(boost::regex_match(param, what, start_exp))
 284                 {
 285                         auto value = what["VALUE"].str();
 286                         if(!value.empty())
 287                                 start(boost::lexical_cast<uint32_t>(value));
 288                         result = boost::lexical_cast<std::wstring>(start());
 289                 }
 290                 else
 291                         CASPAR_THROW_EXCEPTION(invalid_argument());
 292
 293                 return make_ready_future(std::move(result));
 294         }
 295
 296         std::wstring print() const override
 297         {
 298                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|"
 299                                                   + print_mode() + L"|"
 300                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";
 301         }
 302
 303         std::wstring name() const override
 304         {
 305                 return L"ffmpeg";
 306         }
 307
 308         boost::property_tree::wptree info() const override
 309         {
 310                 boost::property_tree::wptree info;
 311                 info.add(L"type",                               L"ffmpeg");
 312                 info.add(L"filename",                   filename_);
 313                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);
 314                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);
 315                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : 0);
 316                 info.add(L"fps",                                fps_);
 317                 info.add(L"loop",                               input_.loop());
 318                 info.add(L"frame-number",               frame_number());
 319                 auto nb_frames2 = nb_frames();
 320                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);
 321                 info.add(L"file-frame-number",  file_frame_number());
 322                 info.add(L"file-nb-frames",             file_nb_frames());
 323                 return info;
 324         }
 325
 326         core::monitor::subject& monitor_output()
 327         {
 328                 return *monitor_subject_;
 329         }
 330
 331         // ffmpeg_producer
 332
 333         void end_seek()
 334         {
 335                 for(int n = 0; n < 8 && (last_frame_ == core::draw_frame::empty() || (seek_target_ && file_frame_number() != *seek_target_+2)); ++n)
 336                 {
 337                         decode_next_frame();
 338                         if(!muxer_.empty())
 339                         {
 340                                 last_frame_ = muxer_.front();
 341                                 seek_target_.reset();
 342                         }
 343                 }
 344         }
 345
 346         void loop(bool value)
 347         {
 348                 input_.loop(value);
 349         }
 350
 351         bool loop() const
 352         {
 353                 return input_.loop();
 354         }
 355
 356         void length(uint32_t value)
 357         {
 358                 input_.length(value);
 359         }
 360
 361         uint32_t length()
 362         {
 363                 return input_.length();
 364         }
 365
 366         void start(uint32_t value)
 367         {
 368                 input_.start(value);
 369         }
 370
 371         uint32_t start()
 372         {
 373                 return input_.start();
 374         }
 375
 376         void seek(uint32_t target)
 377         {
 378                 seek_target_ = std::min(target, file_nb_frames());
 379
 380                 input_.seek(*seek_target_);
 381                 muxer_.clear();
 382         }
 383
 384         std::wstring print_mode() const
 385         {
 386                 return ffmpeg::print_mode(video_decoder_ ? video_decoder_->width() : 0,
 387                         video_decoder_ ? video_decoder_->height() : 0,
 388                         fps_,
 389                         video_decoder_ ? !video_decoder_->is_progressive() : false);
 390         }
 391
 392         void decode_next_frame()
 393         {
 394                 for(int n = 0; n < 8 && muxer_.empty(); ++n)
 395                 {
 396                         if(!muxer_.video_ready())
 397                                 muxer_.push_video(video_decoder_ ? (*video_decoder_)() : create_frame());
 398                         if(!muxer_.audio_ready())
 399                                 muxer_.push_audio(audio_decoder_ ? (*audio_decoder_)() : create_frame());
 400                 }
 401                 graph_->set_text(print());
 402         }
 403 };
 404
 405 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)
 406 {
 407         auto filename = probe_stem(env::media_folder() + L"\\" + params.at(0));
 408
 409         if(filename.empty())
 410                 return core::frame_producer::empty();
 411
 412         bool loop               = contains_param(L"LOOP", params);
 413         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));
 414         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());
 415         auto filter_str = get_param(L"FILTER", params, L"");
 416
 417         return create_destroy_proxy(spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length)));
 418 }
 419
 420 }}