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 \r
  60 #include <deque>\r
  61 #include <queue>\r
  62 #include <vector>\r
  63 \r
  64 using namespace caspar::core;\r
  65 \r
  66 namespace caspar { namespace ffmpeg {\r
  67         \r
  68 struct frame_muxer::implementation : boost::noncopyable\r
  69 {       \r
  70         std::queue<std::queue<safe_ptr<write_frame>>>   video_streams_;\r
  71         std::queue<core::audio_buffer>                                  audio_streams_;\r
  72         std::queue<safe_ptr<basic_frame>>                               frame_buffer_;\r
  73         display_mode::type                                                              display_mode_;\r
  74         const double                                                                    in_fps_;\r
  75         const video_format_desc                                                 format_desc_;\r
  76         bool                                                                                    auto_transcode_;\r
  77         \r
  78         std::vector<size_t>                                                             audio_cadence_;\r
  79 \r
  80         size_t                                                                                  audio_sample_count_;\r
  81         size_t                                                                                  video_frame_count_;\r
  82                 \r
  83         safe_ptr<core::frame_factory>                                   frame_factory_;\r
  84         \r
  85         filter                                                                                  filter_;\r
  86         std::wstring                                                                    filter_str_;\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                 , audio_cadence_(format_desc_.audio_cadence)\r
  94                 , audio_sample_count_(0)\r
  95                 , video_frame_count_(0)\r
  96                 , frame_factory_(frame_factory)\r
  97                 , filter_str_(filter_str)\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_frame_count_ = 0;\r
 113                         video_streams_.push(std::queue<safe_ptr<write_frame>>());\r
 114                 }\r
 115                 else if(video_frame == empty_video())\r
 116                 {\r
 117                         video_streams_.back().push(make_safe<core::write_frame>(this));\r
 118                         ++video_frame_count_;\r
 119                         display_mode_ = display_mode::simple;\r
 120                 }\r
 121                 else\r
 122                 {\r
 123                         if(display_mode_ == display_mode::invalid)\r
 124                                 initialize_display_mode(*video_frame);\r
 125                                 \r
 126                         if(hints & core::frame_producer::ALPHA_HINT)\r
 127                                 video_frame->format = make_alpha_format(video_frame->format);\r
 128                 \r
 129                         auto format = video_frame->format;\r
 130                         if(video_frame->format == CASPAR_PIX_FMT_LUMA) // CASPAR_PIX_FMT_LUMA is not valid for filter, change it to GRAY8\r
 131                                 video_frame->format = PIX_FMT_GRAY8;\r
 132 \r
 133                         filter_.push(video_frame);\r
 134                         BOOST_FOREACH(auto& av_frame, filter_.poll_all())\r
 135                         {\r
 136                                 if(video_frame->format == PIX_FMT_GRAY8 && format == CASPAR_PIX_FMT_LUMA)\r
 137                                         av_frame->format = format;\r
 138 \r
 139                                 video_streams_.back().push(make_write_frame(this, av_frame, frame_factory_, hints));\r
 140                                 ++video_frame_count_;\r
 141                         }\r
 142                 }\r
 143 \r
 144                 if(video_streams_.back().size() > 32)\r
 145                         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
 146         }\r
 147 \r
 148         void push(const std::shared_ptr<core::audio_buffer>& audio)\r
 149         {\r
 150                 if(!audio)      \r
 151                         return;\r
 152 \r
 153                 if(audio == flush_audio())\r
 154                 {\r
 155                         audio_sample_count_ = 0;\r
 156                         audio_streams_.push(core::audio_buffer());\r
 157                 }\r
 158                 else if(audio == empty_audio())\r
 159                 {\r
 160                         boost::range::push_back(audio_streams_.back(), core::audio_buffer(audio_cadence_.front(), 0));\r
 161                         audio_sample_count_ += audio->size();\r
 162                 }\r
 163                 else\r
 164                 {\r
 165                         boost::range::push_back(audio_streams_.back(), *audio);\r
 166                         audio_sample_count_ += audio->size();\r
 167                 }\r
 168 \r
 169                 if(audio_streams_.back().size() > 32*audio_cadence_.front())\r
 170                         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
 171         }\r
 172         \r
 173         bool video_ready() const\r
 174         {               \r
 175                 return video_streams_.size() > 1 || (video_streams_.size() >= audio_streams_.size() && video_ready2());\r
 176         }\r
 177         \r
 178         bool audio_ready() const\r
 179         {\r
 180                 return audio_streams_.size() > 1 || (audio_streams_.size() >= video_streams_.size() && audio_ready2());\r
 181         }\r
 182 \r
 183         bool video_ready2() const\r
 184         {               \r
 185                 switch(display_mode_)\r
 186                 {\r
 187                 case display_mode::deinterlace_bob_reinterlace:                                 \r
 188                 case display_mode::interlace:   \r
 189                 case display_mode::half:\r
 190                         return video_streams_.front().size() >= 2;\r
 191                 default:                                                                                \r
 192                         return video_streams_.front().size() >= 1;\r
 193                 }\r
 194         }\r
 195         \r
 196         bool audio_ready2() const\r
 197         {\r
 198                 switch(display_mode_)\r
 199                 {\r
 200                 case display_mode::duplicate:                                   \r
 201                         return audio_streams_.front().size()/2 >= audio_cadence_.front();\r
 202                 default:                                                                                \r
 203                         return audio_streams_.front().size() >= audio_cadence_.front();\r
 204                 }\r
 205         }\r
 206                 \r
 207         std::shared_ptr<basic_frame> poll()\r
 208         {\r
 209                 if(!frame_buffer_.empty())\r
 210                 {\r
 211                         auto frame = frame_buffer_.front();\r
 212                         frame_buffer_.pop();    \r
 213                         return frame;\r
 214                 }\r
 215 \r
 216                 if(video_streams_.size() > 1 && audio_streams_.size() > 1 && (!video_ready2() || !audio_ready2()))\r
 217                 {\r
 218                         if(!video_streams_.front().empty() || !audio_streams_.front().empty())\r
 219                                 CASPAR_LOG(trace) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";\r
 220 \r
 221                         video_streams_.pop();\r
 222                         audio_streams_.pop();\r
 223                 }\r
 224 \r
 225                 if(!video_ready2() || !audio_ready2())\r
 226                         return nullptr;\r
 227                                 \r
 228                 auto frame1                             = pop_video();\r
 229                 frame1->audio_data()    = pop_audio();\r
 230 \r
 231                 switch(display_mode_)\r
 232                 {\r
 233                 case display_mode::simple:                                              \r
 234                 case display_mode::deinterlace_bob:                             \r
 235                 case display_mode::deinterlace: \r
 236                 {\r
 237                         frame_buffer_.push(frame1);\r
 238                         break;\r
 239                 }\r
 240                 case display_mode::interlace:                                   \r
 241                 case display_mode::deinterlace_bob_reinterlace: \r
 242                 {                               \r
 243                         auto frame2 = pop_video();\r
 244 \r
 245                         frame_buffer_.push(core::basic_frame::interlace(frame1, frame2, format_desc_.field_mode));      \r
 246                         break;\r
 247                 }\r
 248                 case display_mode::duplicate:   \r
 249                 {\r
 250                         auto frame2                             = make_safe<core::write_frame>(*frame1);\r
 251                         frame2->audio_data()    = pop_audio();\r
 252 \r
 253                         frame_buffer_.push(frame1);\r
 254                         frame_buffer_.push(frame2);\r
 255                         break;\r
 256                 }\r
 257                 case display_mode::half:        \r
 258                 {                               \r
 259                         pop_video(); // Throw away\r
 260 \r
 261                         frame_buffer_.push(frame1);\r
 262                         break;\r
 263                 }\r
 264                 default:                                                                                \r
 265                         BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("invalid display-mode"));\r
 266                 }\r
 267                 \r
 268                 return frame_buffer_.empty() ? nullptr : poll();\r
 269         }\r
 270         \r
 271         safe_ptr<core::write_frame> pop_video()\r
 272         {\r
 273                 auto frame = video_streams_.front().front();\r
 274                 video_streams_.front().pop();           \r
 275                 return frame;\r
 276         }\r
 277 \r
 278         core::audio_buffer pop_audio()\r
 279         {\r
 280                 CASPAR_VERIFY(audio_streams_.front().size() >= audio_cadence_.front());\r
 281 \r
 282                 auto begin = audio_streams_.front().begin();\r
 283                 auto end   = begin + audio_cadence_.front();\r
 284 \r
 285                 core::audio_buffer samples(begin, end);\r
 286                 audio_streams_.front().erase(begin, end);\r
 287                 \r
 288                 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);\r
 289 \r
 290                 return samples;\r
 291         }\r
 292                                 \r
 293         void initialize_display_mode(const AVFrame& frame)\r
 294         {\r
 295                 display_mode_ = display_mode::simple;\r
 296                 if(auto_transcode_)\r
 297                 {\r
 298                         auto mode = get_mode(frame);\r
 299                         auto fps  = in_fps_;\r
 300 \r
 301                         if(is_deinterlacing(filter_str_))\r
 302                                 mode = core::field_mode::progressive;\r
 303 \r
 304                         if(is_double_rate(filter_str_))\r
 305                                 fps *= 2;\r
 306                         \r
 307                         display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 308                         \r
 309                         if((frame.height != 480 || format_desc_.height != 486) && \r
 310                                 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && \r
 311                                 frame.height != static_cast<int>(format_desc_.height))\r
 312                         {\r
 313                                 display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 314                         }\r
 315 \r
 316                         if(display_mode_ == display_mode::deinterlace)\r
 317                                 filter_str_ = append_filter(filter_str_, L"YADIF=0:-1");\r
 318                         else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)\r
 319                                 filter_str_ = append_filter(filter_str_, L"YADIF=1:-1");\r
 320                 }\r
 321 \r
 322                 if(display_mode_ == display_mode::invalid)\r
 323                 {\r
 324                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";\r
 325                         display_mode_ = display_mode::simple;\r
 326                 }\r
 327                         \r
 328                 filter_ = filter(filter_str_);\r
 329 \r
 330                 CASPAR_LOG(info) << "[frame_muxer] " << display_mode::print(display_mode_) << L" " << print_mode(frame.width, frame.height, in_fps_, frame.interlaced_frame > 0);\r
 331         }\r
 332 \r
 333         int64_t calc_nb_frames(int64_t nb_frames) const\r
 334         {\r
 335                 switch(display_mode_) // Take into account transformation in run.\r
 336                 {\r
 337                 case display_mode::deinterlace_bob_reinterlace:\r
 338                 case display_mode::interlace:   \r
 339                 case display_mode::half:\r
 340                         nb_frames /= 2;\r
 341                         break;\r
 342                 case display_mode::duplicate:\r
 343                         nb_frames *= 2;\r
 344                         break;\r
 345                 }\r
 346 \r
 347                 if(is_double_rate(widen(filter_.filter_str()))) // Take into account transformations in filter.\r
 348                         nb_frames *= 2;\r
 349 \r
 350                 return nb_frames;\r
 351         }\r
 352 };\r
 353 \r
 354 frame_muxer::frame_muxer(double in_fps, const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filter)\r
 355         : impl_(new implementation(in_fps, frame_factory, filter)){}\r
 356 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame, int hints){impl_->push(video_frame, hints);}\r
 357 void frame_muxer::push(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push(audio_samples);}\r
 358 std::shared_ptr<basic_frame> frame_muxer::poll(){return impl_->poll();}\r
 359 int64_t frame_muxer::calc_nb_frames(int64_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}\r
 360 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 361 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 362 \r
 363 }}