git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/muxer/frame_muxer.cpp

   1 /*\r
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>\r
   3 *\r
   4 * This file is part of CasparCG (www.casparcg.com).\r
   5 *\r
   6 * CasparCG is free software: you can redistribute it and/or modify\r
   7 * it under the terms of the GNU General Public License as published by\r
   8 * the Free Software Foundation, either version 3 of the License, or\r
   9 * (at your option) any later version.\r
  10 *\r
  11 * CasparCG is distributed in the hope that it will be useful,\r
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14 * GNU General Public License for more details.\r
  15 *\r
  16 * You should have received a copy of the GNU General Public License\r
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.\r
  18 *\r
  19 * Author: Robert Nagy, ronag89@gmail.com\r
  20 */\r
  21 \r
  22 #include "../../StdAfx.h"\r
  23 \r
  24 #include "frame_muxer.h"\r
  25 \r
  26 #include "display_mode.h"\r
  27 \r
  28 #include "../filter/filter.h"\r
  29 #include "../util/util.h"\r
  30 \r
  31 #include <core/producer/frame_producer.h>\r
  32 #include <core/producer/frame/basic_frame.h>\r
  33 #include <core/producer/frame/frame_transform.h>\r
  34 #include <core/producer/frame/pixel_format.h>\r
  35 #include <core/producer/frame/frame_factory.h>\r
  36 #include <core/mixer/write_frame.h>\r
  37 \r
  38 #include <common/env.h>\r
  39 #include <common/exception/exceptions.h>\r
  40 #include <common/log/log.h>\r
  41 \r
  42 #if defined(_MSC_VER)\r
  43 #pragma warning (push)\r
  44 #pragma warning (disable : 4244)\r
  45 #endif\r
  46 extern "C" \r
  47 {\r
  48         #define __STDC_CONSTANT_MACROS\r
  49         #define __STDC_LIMIT_MACROS\r
  50         #include <libavcodec/avcodec.h>\r
  51         #include <libavformat/avformat.h>\r
  52 }\r
  53 #if defined(_MSC_VER)\r
  54 #pragma warning (pop)\r
  55 #endif\r
  56 \r
  57 #include <boost/foreach.hpp>\r
  58 #include <boost/range/algorithm_ext/push_back.hpp>\r
  59 #include <boost/algorithm/string/predicate.hpp>\r
  60 \r
  61 #include <deque>\r
  62 #include <queue>\r
  63 #include <vector>\r
  64 \r
  65 using namespace caspar::core;\r
  66 \r
  67 namespace caspar { namespace ffmpeg {\r
  68         \r
  69 struct frame_muxer::implementation : boost::noncopyable\r
  70 {       \r
  71         std::queue<std::queue<safe_ptr<write_frame>>>   video_streams_;\r
  72         std::queue<core::audio_buffer>                                  audio_streams_;\r
  73         std::queue<safe_ptr<basic_frame>>                               frame_buffer_;\r
  74         display_mode::type                                                              display_mode_;\r
  75         const double                                                                    in_fps_;\r
  76         const video_format_desc                                                 format_desc_;\r
  77         bool                                                                                    auto_transcode_;\r
  78         bool                                                                                    auto_deinterlace_;\r
  79         \r
  80         std::vector<size_t>                                                             audio_cadence_;\r
  81                         \r
  82         safe_ptr<core::frame_factory>                                   frame_factory_;\r
  83         \r
  84         filter                                                                                  filter_;\r
  85         const std::wstring                                                              filter_str_;\r
  86         bool                                                                                    force_deinterlacing_;\r
  87                 \r
  88         implementation(double in_fps, const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filter_str)\r
  89                 : display_mode_(display_mode::invalid)\r
  90                 , in_fps_(in_fps)\r
  91                 , format_desc_(frame_factory->get_video_format_desc())\r
  92                 , auto_transcode_(env::properties().get("configuration.auto-transcode", true))\r
  93                 , auto_deinterlace_(env::properties().get("configuration.auto-deinterlace", true))\r
  94                 , audio_cadence_(format_desc_.audio_cadence)\r
  95                 , frame_factory_(frame_factory)\r
  96                 , filter_str_(filter_str)\r
  97                 , force_deinterlacing_(false)\r
  98         {\r
  99                 video_streams_.push(std::queue<safe_ptr<write_frame>>());\r
 100                 audio_streams_.push(core::audio_buffer());\r
 101                 boost::range::sort(audio_cadence_);\r
 102                 boost::range::reverse(audio_cadence_);\r
 103         }\r
 104 \r
 105         void push(const std::shared_ptr<AVFrame>& video_frame, int hints)\r
 106         {               \r
 107                 if(!video_frame)\r
 108                         return;\r
 109                 \r
 110                 if(video_frame == flush_video())\r
 111                 {       \r
 112                         video_streams_.push(std::queue<safe_ptr<write_frame>>());\r
 113                 }\r
 114                 else if(video_frame == empty_video())\r
 115                 {\r
 116                         video_streams_.back().push(make_safe<core::write_frame>(this));\r
 117                         display_mode_ = display_mode::simple;\r
 118                 }\r
 119                 else\r
 120                 {\r
 121                         if(display_mode_ == display_mode::invalid)\r
 122                                 update_display_mode(video_frame);\r
 123                                 \r
 124                         if(hints & core::frame_producer::ALPHA_HINT)\r
 125                                 video_frame->format = make_alpha_format(video_frame->format);\r
 126                 \r
 127                         auto format = video_frame->format;\r
 128                         if(video_frame->format == CASPAR_PIX_FMT_LUMA) // CASPAR_PIX_FMT_LUMA is not valid for filter, change it to GRAY8\r
 129                                 video_frame->format = PIX_FMT_GRAY8;\r
 130 \r
 131                         filter_.push(video_frame);\r
 132                         BOOST_FOREACH(auto& av_frame, filter_.poll_all())\r
 133                         {\r
 134                                 if(video_frame->format == PIX_FMT_GRAY8 && format == CASPAR_PIX_FMT_LUMA)\r
 135                                         av_frame->format = format;\r
 136 \r
 137                                 video_streams_.back().push(make_write_frame(this, av_frame, frame_factory_, hints));\r
 138                         }\r
 139                 }\r
 140 \r
 141                 if(video_streams_.back().size() > 32)\r
 142                         BOOST_THROW_EXCEPTION(invalid_operation() << source_info("frame_muxer") << msg_info("video-stream overflow. This can be caused by incorrect frame-rate. Check clip meta-data."));\r
 143         }\r
 144 \r
 145         void push(const std::shared_ptr<core::audio_buffer>& audio)\r
 146         {\r
 147                 if(!audio)      \r
 148                         return;\r
 149 \r
 150                 if(audio == flush_audio())\r
 151                 {\r
 152                         audio_streams_.push(core::audio_buffer());\r
 153                 }\r
 154                 else if(audio == empty_audio())\r
 155                 {\r
 156                         boost::range::push_back(audio_streams_.back(), core::audio_buffer(audio_cadence_.front(), 0));\r
 157                 }\r
 158                 else\r
 159                 {\r
 160                         boost::range::push_back(audio_streams_.back(), *audio);\r
 161                 }\r
 162 \r
 163                 if(audio_streams_.back().size() > 32*audio_cadence_.front())\r
 164                         BOOST_THROW_EXCEPTION(invalid_operation() << source_info("frame_muxer") << msg_info("audio-stream overflow. This can be caused by incorrect frame-rate. Check clip meta-data."));\r
 165         }\r
 166         \r
 167         bool video_ready() const\r
 168         {               \r
 169                 return video_streams_.size() > 1 || (video_streams_.size() >= audio_streams_.size() && video_ready2());\r
 170         }\r
 171         \r
 172         bool audio_ready() const\r
 173         {\r
 174                 return audio_streams_.size() > 1 || (audio_streams_.size() >= video_streams_.size() && audio_ready2());\r
 175         }\r
 176 \r
 177         bool video_ready2() const\r
 178         {               \r
 179                 switch(display_mode_)\r
 180                 {\r
 181                 case display_mode::deinterlace_bob_reinterlace:                                 \r
 182                 case display_mode::interlace:   \r
 183                 case display_mode::half:\r
 184                         return video_streams_.front().size() >= 2;\r
 185                 default:                                                                                \r
 186                         return video_streams_.front().size() >= 1;\r
 187                 }\r
 188         }\r
 189         \r
 190         bool audio_ready2() const\r
 191         {\r
 192                 switch(display_mode_)\r
 193                 {\r
 194                 case display_mode::duplicate:                                   \r
 195                         return audio_streams_.front().size()/2 >= audio_cadence_.front();\r
 196                 default:                                                                                \r
 197                         return audio_streams_.front().size() >= audio_cadence_.front();\r
 198                 }\r
 199         }\r
 200                 \r
 201         std::shared_ptr<basic_frame> poll()\r
 202         {\r
 203                 if(!frame_buffer_.empty())\r
 204                 {\r
 205                         auto frame = frame_buffer_.front();\r
 206                         frame_buffer_.pop();    \r
 207                         return frame;\r
 208                 }\r
 209 \r
 210                 if(video_streams_.size() > 1 && audio_streams_.size() > 1 && (!video_ready2() || !audio_ready2()))\r
 211                 {\r
 212                         if(!video_streams_.front().empty() || !audio_streams_.front().empty())\r
 213                                 CASPAR_LOG(trace) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";\r
 214 \r
 215                         video_streams_.pop();\r
 216                         audio_streams_.pop();\r
 217                 }\r
 218 \r
 219                 if(!video_ready2() || !audio_ready2())\r
 220                         return nullptr;\r
 221                                 \r
 222                 auto frame1                             = pop_video();\r
 223                 frame1->audio_data()    = pop_audio();\r
 224 \r
 225                 switch(display_mode_)\r
 226                 {\r
 227                 case display_mode::simple:                                              \r
 228                 case display_mode::deinterlace_bob:                             \r
 229                 case display_mode::deinterlace: \r
 230                 {\r
 231                         frame_buffer_.push(frame1);\r
 232                         break;\r
 233                 }\r
 234                 case display_mode::interlace:                                   \r
 235                 case display_mode::deinterlace_bob_reinterlace: \r
 236                 {                               \r
 237                         auto frame2 = pop_video();\r
 238 \r
 239                         frame_buffer_.push(core::basic_frame::interlace(frame1, frame2, format_desc_.field_mode));      \r
 240                         break;\r
 241                 }\r
 242                 case display_mode::duplicate:   \r
 243                 {\r
 244                         auto frame2                             = make_safe<core::write_frame>(*frame1);\r
 245                         frame2->audio_data()    = pop_audio();\r
 246 \r
 247                         frame_buffer_.push(frame1);\r
 248                         frame_buffer_.push(frame2);\r
 249                         break;\r
 250                 }\r
 251                 case display_mode::half:        \r
 252                 {                               \r
 253                         pop_video(); // Throw away\r
 254 \r
 255                         frame_buffer_.push(frame1);\r
 256                         break;\r
 257                 }\r
 258                 default:                                                                                \r
 259                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("invalid display-mode"));\r
 260                 }\r
 261                 \r
 262                 return frame_buffer_.empty() ? nullptr : poll();\r
 263         }\r
 264         \r
 265         safe_ptr<core::write_frame> pop_video()\r
 266         {\r
 267                 auto frame = video_streams_.front().front();\r
 268                 video_streams_.front().pop();           \r
 269                 return frame;\r
 270         }\r
 271 \r
 272         core::audio_buffer pop_audio()\r
 273         {\r
 274                 CASPAR_VERIFY(audio_streams_.front().size() >= audio_cadence_.front());\r
 275 \r
 276                 auto begin = audio_streams_.front().begin();\r
 277                 auto end   = begin + audio_cadence_.front();\r
 278 \r
 279                 core::audio_buffer samples(begin, end);\r
 280                 audio_streams_.front().erase(begin, end);\r
 281                 \r
 282                 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);\r
 283 \r
 284                 return samples;\r
 285         }\r
 286                                 \r
 287         void update_display_mode(const std::shared_ptr<AVFrame>& frame)\r
 288         {\r
 289                 std::wstring filter_str = filter_str_;\r
 290 \r
 291                 display_mode_ = display_mode::simple;\r
 292                 if(auto_transcode_)\r
 293                 {\r
 294                         auto mode = get_mode(*frame);\r
 295                         auto fps  = in_fps_;\r
 296 \r
 297                         if(is_deinterlacing(filter_str_))\r
 298                                 mode = core::field_mode::progressive;\r
 299 \r
 300                         if(is_double_rate(filter_str_))\r
 301                                 fps *= 2;\r
 302                         \r
 303                         display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 304                         \r
 305                         if(force_deinterlacing_ || \r
 306                                 ((frame->height != 480 || format_desc_.height != 486) && \r
 307                                         display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && \r
 308                                         frame->height != static_cast<int>(format_desc_.height)))\r
 309                         {\r
 310                                 display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 311                         }\r
 312 \r
 313                         if(display_mode_ == display_mode::deinterlace)\r
 314                                 filter_str = append_filter(filter_str, L"YADIF=0:-1");\r
 315                         else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)\r
 316                                 filter_str = append_filter(filter_str, L"YADIF=1:-1");\r
 317                 }\r
 318 \r
 319                 if(display_mode_ == display_mode::invalid)\r
 320                 {\r
 321                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";\r
 322                         display_mode_ = display_mode::simple;\r
 323                 }\r
 324                         \r
 325                 if(!boost::iequals(filter_.filter_str(), filter_str))\r
 326                 {\r
 327                         for(int n = 0; n < filter_delay(filter_.filter_str()); ++n)\r
 328                         {\r
 329                                 filter_.push(frame);\r
 330                                 auto av_frame = filter_.poll();\r
 331                                 if(av_frame)                                                    \r
 332                                         video_streams_.back().push(make_write_frame(this, make_safe_ptr(av_frame), frame_factory_, 0));\r
 333                         }\r
 334                         filter_ = filter(filter_str);\r
 335                         CASPAR_LOG(info) << "[frame_muxer] " << display_mode::print(display_mode_) << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);\r
 336                 }\r
 337         }\r
 338 \r
 339         void force_deinterlacing(bool value)\r
 340         {\r
 341                 if(!auto_deinterlace_ || value == force_deinterlacing_)\r
 342                         return;\r
 343 \r
 344                 force_deinterlacing_ = value;\r
 345                 display_mode_ = display_mode::invalid;\r
 346         }\r
 347 \r
 348         int64_t calc_nb_frames(int64_t nb_frames) const\r
 349         {\r
 350                 switch(display_mode_) // Take into account transformation in run.\r
 351                 {\r
 352                 case display_mode::deinterlace_bob_reinterlace:\r
 353                 case display_mode::interlace:   \r
 354                 case display_mode::half:\r
 355                         nb_frames /= 2;\r
 356                         break;\r
 357                 case display_mode::duplicate:\r
 358                         nb_frames *= 2;\r
 359                         break;\r
 360                 }\r
 361 \r
 362                 if(is_double_rate(widen(filter_.filter_str()))) // Take into account transformations in filter.\r
 363                         nb_frames *= 2;\r
 364 \r
 365                 return nb_frames;\r
 366         }\r
 367 };\r
 368 \r
 369 frame_muxer::frame_muxer(double in_fps, const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filter)\r
 370         : impl_(new implementation(in_fps, frame_factory, filter)){}\r
 371 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame, int hints){impl_->push(video_frame, hints);}\r
 372 void frame_muxer::push(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push(audio_samples);}\r
 373 std::shared_ptr<basic_frame> frame_muxer::poll(){return impl_->poll();}\r
 374 int64_t frame_muxer::calc_nb_frames(int64_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}\r
 375 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 376 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 377 void frame_muxer::force_deinterlacing(bool value){impl_->force_deinterlacing(value);}\r
 378 \r
 379 }}