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 #include <common/timer.h>
  40
  41 #include <core/video_format.h>
  42 #include <core/producer/frame_producer.h>
  43 #include <core/frame/frame_factory.h>
  44 #include <core/frame/draw_frame.h>
  45 #include <core/frame/frame_transform.h>
  46 #include <core/monitor/monitor.h>
  47
  48 #include <boost/algorithm/string.hpp>
  49 #include <common/assert.h>
  50 #include <boost/filesystem.hpp>
  51 #include <boost/property_tree/ptree.hpp>
  52 #include <boost/regex.hpp>
  53 #include <boost/thread/future.hpp>
  54
  55 #include <tbb/parallel_invoke.h>
  56
  57 #include <limits>
  58 #include <memory>
  59 #include <queue>
  60
  61 namespace caspar { namespace ffmpeg {
  62
  63 std::wstring get_relative_or_original(
  64                 const std::wstring& filename,
  65                 const boost::filesystem::wpath& relative_to)
  66 {
  67         boost::filesystem::wpath file(filename);
  68         auto result = file.filename().wstring();
  69
  70         boost::filesystem::wpath current_path = file;
  71
  72         while (true)
  73         {
  74                 current_path = current_path.parent_path();
  75
  76                 if (boost::filesystem::equivalent(current_path, relative_to))
  77                         break;
  78
  79                 if (current_path.empty())
  80                         return filename;
  81
  82                 result = current_path.filename().wstring() + L"/" + result;
  83         }
  84
  85         return result;
  86 }
  87
  88 struct ffmpeg_producer : public core::frame_producer_base
  89 {
  90         spl::shared_ptr<core::monitor::subject>                 monitor_subject_;
  91         const std::wstring                                                              filename_;
  92         const std::wstring                                                              path_relative_to_media_ = get_relative_or_original(filename_, env::media_folder());
  93
  94         const spl::shared_ptr<diagnostics::graph>               graph_;
  95
  96         const spl::shared_ptr<core::frame_factory>              frame_factory_;
  97         const core::video_format_desc                                   format_desc_;
  98
  99         input                                                                                   input_;
 100
 101         const double                                                                    fps_                                    = read_fps(input_.context(), format_desc_.fps);
 102         const uint32_t                                                                  start_;
 103
 104         std::unique_ptr<video_decoder>                                  video_decoder_;
 105         std::unique_ptr<audio_decoder>                                  audio_decoder_;
 106         frame_muxer                                                                             muxer_;
 107         core::constraints                                                               constraints_;
 108
 109         core::draw_frame                                                                last_frame_                             = core::draw_frame::empty();
 110
 111         boost::optional<uint32_t>                                               seek_target_;
 112
 113 public:
 114         explicit ffmpeg_producer(const spl::shared_ptr<core::frame_factory>& frame_factory,
 115                                                          const core::video_format_desc& format_desc,
 116                                                          const std::wstring& filename,
 117                                                          const std::wstring& filter,
 118                                                          bool loop,
 119                                                          uint32_t start,
 120                                                          uint32_t length)
 121                 : filename_(filename)
 122                 , frame_factory_(frame_factory)
 123                 , format_desc_(format_desc)
 124                 , input_(graph_, filename_, loop, start, length)
 125                 , fps_(read_fps(input_.context(), format_desc_.fps))
 126                 , muxer_(fps_, frame_factory, format_desc_, filter)
 127                 , start_(start)
 128         {
 129                 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
 130                 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));
 131                 diagnostics::register_graph(graph_);
 132
 133
 134                 try
 135                 {
 136                         video_decoder_.reset(new video_decoder(input_));
 137                         video_decoder_->monitor_output().attach_parent(monitor_subject_);
 138                         constraints_.width.set(video_decoder_->width());
 139                         constraints_.height.set(video_decoder_->height());
 140
 141                         CASPAR_LOG(info) << print() << L" " << video_decoder_->print();
 142                 }
 143                 catch(averror_stream_not_found&)
 144                 {
 145                         //CASPAR_LOG(warning) << print() << " No video-stream found. Running without video.";
 146                 }
 147                 catch(...)
 148                 {
 149                         CASPAR_LOG_CURRENT_EXCEPTION();
 150                         CASPAR_LOG(warning) << print() << "Failed to open video-stream. Running without video.";
 151                 }
 152
 153                 try
 154                 {
 155                         audio_decoder_ .reset(new audio_decoder(input_, format_desc_));
 156                         audio_decoder_->monitor_output().attach_parent(monitor_subject_);
 157
 158                         CASPAR_LOG(info) << print() << L" " << audio_decoder_->print();
 159                 }
 160                 catch(averror_stream_not_found&)
 161                 {
 162                         //CASPAR_LOG(warning) << print() << " No audio-stream found. Running without audio.";
 163                 }
 164                 catch(...)
 165                 {
 166                         CASPAR_LOG_CURRENT_EXCEPTION();
 167                         CASPAR_LOG(warning) << print() << " Failed to open audio-stream. Running without audio.";
 168                 }
 169
 170                 decode_next_frame();
 171
 172                 CASPAR_LOG(info) << print() << L" Initialized";
 173         }
 174
 175         // frame_producer
 176
 177         core::draw_frame receive_impl() override
 178         {
 179                 auto frame = core::draw_frame::late();
 180
 181                 caspar::timer frame_timer;
 182
 183                 end_seek();
 184
 185                 decode_next_frame();
 186
 187                 if(!muxer_.empty())
 188                 {
 189                         last_frame_ = frame = std::move(muxer_.front());
 190                         muxer_.pop();
 191                 }
 192                 else
 193                         graph_->set_tag("underflow");
 194
 195                 graph_->set_value("frame-time", frame_timer.elapsed()*format_desc_.fps*0.5);
 196                 *monitor_subject_
 197                                 << core::monitor::message("/profiler/time")     % frame_timer.elapsed() % (1.0/format_desc_.fps);
 198                 *monitor_subject_
 199                                 << core::monitor::message("/file/time")         % (file_frame_number()/fps_)
 200                                                                                                                         % (file_nb_frames()/fps_)
 201                                 << core::monitor::message("/file/frame")        % static_cast<int32_t>(file_frame_number())
 202                                                                                                                         % static_cast<int32_t>(file_nb_frames())
 203                                 << core::monitor::message("/file/fps")          % fps_
 204                                 << core::monitor::message("/file/path")         % path_relative_to_media_
 205                                 << core::monitor::message("/loop")                      % input_.loop();
 206
 207                 return frame;
 208         }
 209
 210         core::draw_frame last_frame() override
 211         {
 212                 end_seek();
 213                 return core::draw_frame::still(last_frame_);
 214         }
 215
 216         core::constraints& pixel_constraints() override
 217         {
 218                 return constraints_;
 219         }
 220
 221         uint32_t nb_frames() const override
 222         {
 223                 if(input_.loop())
 224                         return std::numeric_limits<uint32_t>::max();
 225
 226                 uint32_t nb_frames = file_nb_frames();
 227
 228                 nb_frames = std::min(input_.length(), nb_frames);
 229                 nb_frames = muxer_.calc_nb_frames(nb_frames);
 230
 231                 return nb_frames > start_ ? nb_frames - start_ : 0;
 232         }
 233
 234         uint32_t file_nb_frames() const
 235         {
 236                 uint32_t file_nb_frames = 0;
 237                 file_nb_frames = std::max(file_nb_frames, video_decoder_ ? video_decoder_->nb_frames() : 0);
 238                 file_nb_frames = std::max(file_nb_frames, audio_decoder_ ? audio_decoder_->nb_frames() : 0);
 239                 return file_nb_frames;
 240         }
 241
 242         uint32_t file_frame_number() const
 243         {
 244                 return video_decoder_ ? video_decoder_->file_frame_number() : 0;
 245         }
 246
 247         std::future<std::wstring> call(const std::vector<std::wstring>& params) override
 248         {
 249                 static const boost::wregex loop_exp(LR"(LOOP\s*(?<VALUE>\d?)?)", boost::regex::icase);
 250                 static const boost::wregex seek_exp(LR"(SEEK\s+(?<VALUE>\d+))", boost::regex::icase);
 251                 static const boost::wregex length_exp(LR"(LENGTH\s+(?<VALUE>\d+)?)", boost::regex::icase);
 252                 static const boost::wregex start_exp(LR"(START\\s+(?<VALUE>\\d+)?)", boost::regex::icase);
 253
 254                 auto param = boost::algorithm::join(params, L" ");
 255
 256                 std::wstring result;
 257
 258                 boost::wsmatch what;
 259                 if(boost::regex_match(param, what, loop_exp))
 260                 {
 261                         auto value = what["VALUE"].str();
 262                         if(!value.empty())
 263                                 input_.loop(boost::lexical_cast<bool>(value));
 264                         result = boost::lexical_cast<std::wstring>(loop());
 265                 }
 266                 else if(boost::regex_match(param, what, seek_exp))
 267                 {
 268                         auto value = what["VALUE"].str();
 269                         seek(boost::lexical_cast<uint32_t>(value));
 270                 }
 271                 else if(boost::regex_match(param, what, length_exp))
 272                 {
 273                         auto value = what["VALUE"].str();
 274                         if(!value.empty())
 275                                 length(boost::lexical_cast<uint32_t>(value));
 276                         result = boost::lexical_cast<std::wstring>(length());
 277                 }
 278                 else if(boost::regex_match(param, what, start_exp))
 279                 {
 280                         auto value = what["VALUE"].str();
 281                         if(!value.empty())
 282                                 start(boost::lexical_cast<uint32_t>(value));
 283                         result = boost::lexical_cast<std::wstring>(start());
 284                 }
 285                 else
 286                         CASPAR_THROW_EXCEPTION(invalid_argument());
 287
 288                 return make_ready_future(std::move(result));
 289         }
 290
 291         std::wstring print() const override
 292         {
 293                 return L"ffmpeg[" + boost::filesystem::path(filename_).filename().wstring() + L"|"
 294                                                   + print_mode() + L"|"
 295                                                   + boost::lexical_cast<std::wstring>(file_frame_number()) + L"/" + boost::lexical_cast<std::wstring>(file_nb_frames()) + L"]";
 296         }
 297
 298         std::wstring name() const override
 299         {
 300                 return L"ffmpeg";
 301         }
 302
 303         boost::property_tree::wptree info() const override
 304         {
 305                 boost::property_tree::wptree info;
 306                 info.add(L"type",                               L"ffmpeg");
 307                 info.add(L"filename",                   filename_);
 308                 info.add(L"width",                              video_decoder_ ? video_decoder_->width() : 0);
 309                 info.add(L"height",                             video_decoder_ ? video_decoder_->height() : 0);
 310                 info.add(L"progressive",                video_decoder_ ? video_decoder_->is_progressive() : 0);
 311                 info.add(L"fps",                                fps_);
 312                 info.add(L"loop",                               input_.loop());
 313                 info.add(L"frame-number",               frame_number());
 314                 auto nb_frames2 = nb_frames();
 315                 info.add(L"nb-frames",                  nb_frames2 == std::numeric_limits<int64_t>::max() ? -1 : nb_frames2);
 316                 info.add(L"file-frame-number",  file_frame_number());
 317                 info.add(L"file-nb-frames",             file_nb_frames());
 318                 return info;
 319         }
 320
 321         core::monitor::subject& monitor_output()
 322         {
 323                 return *monitor_subject_;
 324         }
 325
 326         // ffmpeg_producer
 327
 328         void end_seek()
 329         {
 330                 for(int n = 0; n < 8 && (last_frame_ == core::draw_frame::empty() || (seek_target_ && file_frame_number() != *seek_target_+2)); ++n)
 331                 {
 332                         decode_next_frame();
 333                         if(!muxer_.empty())
 334                         {
 335                                 last_frame_ = muxer_.front();
 336                                 seek_target_.reset();
 337                         }
 338                 }
 339         }
 340
 341         void loop(bool value)
 342         {
 343                 input_.loop(value);
 344         }
 345
 346         bool loop() const
 347         {
 348                 return input_.loop();
 349         }
 350
 351         void length(uint32_t value)
 352         {
 353                 input_.length(value);
 354         }
 355
 356         uint32_t length()
 357         {
 358                 return input_.length();
 359         }
 360
 361         void start(uint32_t value)
 362         {
 363                 input_.start(value);
 364         }
 365
 366         uint32_t start()
 367         {
 368                 return input_.start();
 369         }
 370
 371         void seek(uint32_t target)
 372         {
 373                 seek_target_ = std::min(target, file_nb_frames());
 374
 375                 input_.seek(*seek_target_);
 376                 muxer_.clear();
 377         }
 378
 379         std::wstring print_mode() const
 380         {
 381                 return ffmpeg::print_mode(video_decoder_ ? video_decoder_->width() : 0,
 382                         video_decoder_ ? video_decoder_->height() : 0,
 383                         fps_,
 384                         video_decoder_ ? !video_decoder_->is_progressive() : false);
 385         }
 386
 387         void decode_next_frame()
 388         {
 389                 for(int n = 0; n < 8 && muxer_.empty(); ++n)
 390                 {
 391                         if(!muxer_.video_ready())
 392                                 muxer_.push_video(video_decoder_ ? (*video_decoder_)() : create_frame());
 393                         if(!muxer_.audio_ready())
 394                                 muxer_.push_audio(audio_decoder_ ? (*audio_decoder_)() : create_frame());
 395                 }
 396                 graph_->set_text(print());
 397         }
 398 };
 399
 400 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)
 401 {
 402         auto filename = probe_stem(env::media_folder() + L"/" + params.at(0));
 403
 404         if(filename.empty())
 405                 return core::frame_producer::empty();
 406
 407         bool loop               = contains_param(L"LOOP", params);
 408         auto start              = get_param(L"START", params, get_param(L"SEEK", params, static_cast<uint32_t>(0)));
 409         auto length             = get_param(L"LENGTH", params, std::numeric_limits<uint32_t>::max());
 410         auto filter_str = get_param(L"FILTER", params, L"");
 411
 412         return create_destroy_proxy(spl::make_shared_ptr(std::make_shared<ffmpeg_producer>(frame_factory, format_desc, filename, filter_str, loop, start, length)));
 413 }
 414
 415 }}