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 "../filter/filter.h"\r
  27 #include "../util/util.h"\r
  28 \r
  29 #include <core/producer/frame_producer.h>\r
  30 #include <core/frame/draw_frame.h>\r
  31 #include <core/frame/frame_transform.h>\r
  32 #include <core/frame/pixel_format.h>\r
  33 #include <core/frame/frame_factory.h>\r
  34 #include <core/frame/frame.h>\r
  35 \r
  36 #include <common/env.h>\r
  37 #include <common/except.h>\r
  38 #include <common/log.h>\r
  39 \r
  40 #if defined(_MSC_VER)\r
  41 #pragma warning (push)\r
  42 #pragma warning (disable : 4244)\r
  43 #endif\r
  44 extern "C" \r
  45 {\r
  46         #define __STDC_CONSTANT_MACROS\r
  47         #define __STDC_LIMIT_MACROS\r
  48         #include <libavcodec/avcodec.h>\r
  49         #include <libavformat/avformat.h>\r
  50 }\r
  51 #if defined(_MSC_VER)\r
  52 #pragma warning (pop)\r
  53 #endif\r
  54 \r
  55 #include <common/assert.h>\r
  56 #include <boost/foreach.hpp>\r
  57 #include <boost/range/algorithm_ext/push_back.hpp>\r
  58 #include <boost/algorithm/string/predicate.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::impl : boost::noncopyable\r
  69 {       \r
  70         std::queue<std::queue<core::mutable_frame>>             video_streams_;\r
  71         std::queue<core::audio_buffer>                                  audio_streams_;\r
  72         std::queue<draw_frame>                                                  frame_buffer_;\r
  73         display_mode                                                                    display_mode_;\r
  74         const double                                                                    in_fps_;\r
  75         const video_format_desc                                                 format_desc_;\r
  76         \r
  77         std::vector<int>                                                                audio_cadence_;\r
  78                         \r
  79         spl::shared_ptr<core::frame_factory>                    frame_factory_;\r
  80         \r
  81         filter                                                                                  filter_;\r
  82         const std::wstring                                                              filter_str_;\r
  83                 \r
  84         impl(double in_fps, const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::wstring& filter_str)\r
  85                 : display_mode_(display_mode::invalid)\r
  86                 , in_fps_(in_fps)\r
  87                 , format_desc_(format_desc)\r
  88                 , audio_cadence_(format_desc_.audio_cadence)\r
  89                 , frame_factory_(frame_factory)\r
  90                 , filter_str_(filter_str)\r
  91         {\r
  92                 video_streams_.push(std::queue<core::mutable_frame>());\r
  93                 audio_streams_.push(core::audio_buffer());\r
  94                 \r
  95                 // Note: Uses 1 step rotated cadence for 1001 modes (1602, 1602, 1601, 1602, 1601)\r
  96                 // This cadence fills the audio mixer most optimally.\r
  97                 boost::range::rotate(audio_cadence_, std::end(audio_cadence_)-1);\r
  98         }\r
  99 \r
 100         void push(const std::shared_ptr<AVFrame>& video_frame)\r
 101         {               \r
 102                 if(!video_frame)\r
 103                 {\r
 104                         merge();\r
 105                         return;\r
 106                 }\r
 107 \r
 108                 if(video_frame == flush_video())                \r
 109                         video_streams_.push(std::queue<core::mutable_frame>());                         \r
 110                 else if(video_frame == empty_video())\r
 111                 {\r
 112                         auto empty_frame = frame_factory_->create_frame(this, core::pixel_format_desc(core::pixel_format::invalid));\r
 113                         video_streams_.back().push(std::move(empty_frame));\r
 114                         display_mode_ = display_mode::simple;\r
 115                 }\r
 116                 else\r
 117                 {\r
 118                         if(display_mode_ == display_mode::invalid)\r
 119                                 update_display_mode(video_frame);\r
 120                                 \r
 121                         filter_.push(video_frame);\r
 122                         BOOST_FOREACH(auto& av_frame, filter_.poll_all())                       \r
 123                                 video_streams_.back().push(make_frame(this, av_frame, format_desc_.fps, *frame_factory_));                      \r
 124                 }\r
 125 \r
 126                 if(video_streams_.back().size() > 32)\r
 127                         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
 128                 \r
 129                 merge();\r
 130         }\r
 131 \r
 132         void push(const std::shared_ptr<core::audio_buffer>& audio)\r
 133         {\r
 134                 if(!audio)\r
 135                 {\r
 136                         merge();\r
 137                         return;\r
 138                 }\r
 139 \r
 140                 if(audio == flush_audio())                      \r
 141                         audio_streams_.push(core::audio_buffer());                              \r
 142                 else if(audio == empty_audio())         \r
 143                         boost::range::push_back(audio_streams_.back(), core::audio_buffer(audio_cadence_.front(), 0));          \r
 144                 else            \r
 145                         boost::range::push_back(audio_streams_.back(), *audio);         \r
 146 \r
 147                 if(audio_streams_.back().size() > static_cast<size_t>(32*audio_cadence_.front()))\r
 148                         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
 149 \r
 150                 merge();\r
 151         }\r
 152         \r
 153         bool video_ready() const\r
 154         {               \r
 155                 return video_streams_.size() > 1 || (video_streams_.size() >= audio_streams_.size() && video_ready2());\r
 156         }\r
 157         \r
 158         bool audio_ready() const\r
 159         {\r
 160                 return audio_streams_.size() > 1 || (audio_streams_.size() >= video_streams_.size() && audio_ready2());\r
 161         }\r
 162 \r
 163         bool video_ready2() const\r
 164         {               \r
 165                 switch(display_mode_)\r
 166                 {\r
 167                 case display_mode::deinterlace_bob_reinterlace:                                 \r
 168                 case display_mode::interlace:   \r
 169                 case display_mode::half:\r
 170                         return video_streams_.front().size() >= 2;\r
 171                 default:                                                                                \r
 172                         return video_streams_.front().size() >= 1;\r
 173                 }\r
 174         }\r
 175         \r
 176         bool audio_ready2() const\r
 177         {\r
 178                 switch(display_mode_)\r
 179                 {\r
 180                 case display_mode::duplicate:                                   \r
 181                         return audio_streams_.front().size()/2 >= static_cast<size_t>(audio_cadence_.front());\r
 182                 default:                                                                                \r
 183                         return audio_streams_.front().size() >= static_cast<size_t>(audio_cadence_.front());\r
 184                 }\r
 185         }\r
 186 \r
 187         bool empty() const\r
 188         {\r
 189                 return frame_buffer_.empty();\r
 190         }\r
 191 \r
 192         core::draw_frame front() const\r
 193         {\r
 194                 return frame_buffer_.front();\r
 195         }\r
 196 \r
 197         void pop()\r
 198         {\r
 199                 frame_buffer_.pop();\r
 200         }\r
 201                 \r
 202         void merge()\r
 203         {\r
 204                 if(video_streams_.size() > 1 && audio_streams_.size() > 1 && (!video_ready2() || !audio_ready2()))\r
 205                 {\r
 206                         if(!video_streams_.front().empty() || !audio_streams_.front().empty())\r
 207                                 CASPAR_LOG(trace) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";\r
 208 \r
 209                         video_streams_.pop();\r
 210                         audio_streams_.pop();\r
 211                 }\r
 212 \r
 213                 if(!video_ready2() || !audio_ready2() || display_mode_ == display_mode::invalid)\r
 214                         return;\r
 215                                 \r
 216                 auto frame1                             = pop_video();\r
 217                 frame1.audio_data()     = pop_audio();\r
 218 \r
 219                 switch(display_mode_)\r
 220                 {\r
 221                 case display_mode::simple:                                              \r
 222                 case display_mode::deinterlace_bob:                             \r
 223                 case display_mode::deinterlace: \r
 224                         {\r
 225                                 frame_buffer_.push(core::draw_frame(std::move(frame1)));\r
 226                                 break;\r
 227                         }\r
 228                 case display_mode::interlace:                                   \r
 229                 case display_mode::deinterlace_bob_reinterlace: \r
 230                         {                               \r
 231                                 auto frame2 = pop_video();\r
 232 \r
 233                                 frame_buffer_.push(core::draw_frame::interlace(\r
 234                                         core::draw_frame(std::move(frame1)),\r
 235                                         core::draw_frame(std::move(frame2)),\r
 236                                         format_desc_.field_mode));      \r
 237                                 break;\r
 238                         }\r
 239                 case display_mode::duplicate:   \r
 240                         {\r
 241                                 boost::range::push_back(frame1.audio_data(), pop_audio());\r
 242 \r
 243                                 auto draw_frame = core::draw_frame(std::move(frame1));\r
 244                                 frame_buffer_.push(draw_frame);\r
 245                                 frame_buffer_.push(draw_frame);\r
 246                                 break;\r
 247                         }\r
 248                 case display_mode::half:        \r
 249                         {                               \r
 250                                 pop_video(); // Throw away\r
 251 \r
 252                                 frame_buffer_.push(core::draw_frame(std::move(frame1)));\r
 253                                 break;\r
 254                         }\r
 255                 default:\r
 256                         BOOST_THROW_EXCEPTION(invalid_operation());\r
 257                 }\r
 258         }\r
 259         \r
 260         core::mutable_frame pop_video()\r
 261         {\r
 262                 auto frame = std::move(video_streams_.front().front());\r
 263                 video_streams_.front().pop();           \r
 264                 return std::move(frame);\r
 265         }\r
 266 \r
 267         core::audio_buffer pop_audio()\r
 268         {\r
 269                 CASPAR_VERIFY(audio_streams_.front().size() >= static_cast<size_t>(audio_cadence_.front()));\r
 270 \r
 271                 auto begin = audio_streams_.front().begin();\r
 272                 auto end   = begin + audio_cadence_.front();\r
 273 \r
 274                 core::audio_buffer samples(begin, end);\r
 275                 audio_streams_.front().erase(begin, end);\r
 276                 \r
 277                 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);\r
 278 \r
 279                 return samples;\r
 280         }\r
 281                                 \r
 282         void update_display_mode(const std::shared_ptr<AVFrame>& frame)\r
 283         {\r
 284                 std::wstring filter_str = filter_str_;\r
 285 \r
 286                 display_mode_ = display_mode::simple;\r
 287 \r
 288                 auto mode = get_mode(*frame);\r
 289                 if(mode == core::field_mode::progressive && frame->height < 720 && in_fps_ < 50.0) // SD frames are interlaced. Probably incorrect meta-data. Fix it.\r
 290                         mode = core::field_mode::upper;\r
 291 \r
 292                 auto fps  = in_fps_;\r
 293 \r
 294                 if(filter::is_deinterlacing(filter_str_))\r
 295                         mode = core::field_mode::progressive;\r
 296 \r
 297                 if(filter::is_double_rate(filter_str_))\r
 298                         fps *= 2;\r
 299                         \r
 300                 display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 301                         \r
 302                 if((frame->height != 480 || format_desc_.height != 486) && // don't deinterlace for NTSC DV\r
 303                                 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && \r
 304                                 frame->height != format_desc_.height)\r
 305                 {\r
 306                         display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 307                 }\r
 308 \r
 309                 // ALWAYS de-interlace, until we have GPU de-interlacing.\r
 310                 if(frame->interlaced_frame && display_mode_ != display_mode::deinterlace_bob && display_mode_ != display_mode::deinterlace)\r
 311                         display_mode_ = display_mode::deinterlace_bob_reinterlace;\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                 if(display_mode_ == display_mode::invalid)\r
 319                 {\r
 320                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";\r
 321                         display_mode_ = display_mode::simple;\r
 322                 }\r
 323 \r
 324                 filter_ = filter(filter_str);\r
 325                 CASPAR_LOG(info) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);\r
 326         }\r
 327         \r
 328         uint32_t calc_nb_frames(uint32_t nb_frames) const\r
 329         {\r
 330                 uint64_t nb_frames2 = nb_frames;\r
 331                 \r
 332                 if(filter_.is_double_rate()) // Take into account transformations in filter.\r
 333                         nb_frames2 *= 2;\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_frames2 /= 2;\r
 341                         break;\r
 342                 case display_mode::duplicate:\r
 343                         nb_frames2 *= 2;\r
 344                         break;\r
 345                 }\r
 346 \r
 347                 return static_cast<uint32_t>(nb_frames2);\r
 348         }\r
 349 \r
 350         void clear()\r
 351         {\r
 352                 while(!video_streams_.empty())\r
 353                         video_streams_.pop();           \r
 354                 while(!audio_streams_.empty())\r
 355                         audio_streams_.pop();\r
 356                 while(!frame_buffer_.empty())\r
 357                         frame_buffer_.pop();\r
 358 \r
 359                 video_streams_.push(std::queue<core::mutable_frame>());\r
 360                 audio_streams_.push(core::audio_buffer());\r
 361         }\r
 362 };\r
 363 \r
 364 frame_muxer::frame_muxer(double in_fps, const spl::shared_ptr<core::frame_factory>& frame_factory, const core::video_format_desc& format_desc, const std::wstring& filter)\r
 365         : impl_(new impl(in_fps, frame_factory, format_desc, filter)){}\r
 366 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame){impl_->push(video_frame);}\r
 367 void frame_muxer::push(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push(audio_samples);}\r
 368 bool frame_muxer::empty() const{return impl_->empty();}\r
 369 core::draw_frame frame_muxer::front() const{return impl_->front();}\r
 370 void frame_muxer::pop(){return impl_->pop();}\r
 371 void frame_muxer::clear(){impl_->clear();}\r
 372 uint32_t frame_muxer::calc_nb_frames(uint32_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}\r
 373 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 374 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 375 \r
 376 }}