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/mixer/gpu/write_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<spl::shared_ptr<write_frame>>>    video_streams_;\r
  71         std::queue<core::audio_buffer>                                  audio_streams_;\r
  72         std::queue<spl::shared_ptr<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         bool                                                                                    auto_transcode_;\r
  77         bool                                                                                    auto_deinterlace_;\r
  78         \r
  79         std::vector<int>                                                                audio_cadence_;\r
  80                         \r
  81         spl::shared_ptr<core::frame_factory>                                    frame_factory_;\r
  82         \r
  83         filter                                                                                  filter_;\r
  84         const std::wstring                                                              filter_str_;\r
  85         bool                                                                                    force_deinterlacing_;\r
  86                 \r
  87         impl(double in_fps, const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filter_str)\r
  88                 : display_mode_(display_mode::invalid)\r
  89                 , in_fps_(in_fps)\r
  90                 , format_desc_(frame_factory->get_video_format_desc())\r
  91                 , auto_transcode_(env::properties().get(L"configuration.auto-transcode", true))\r
  92                 , auto_deinterlace_(env::properties().get(L"configuration.auto-deinterlace", true))\r
  93                 , audio_cadence_(format_desc_.audio_cadence)\r
  94                 , frame_factory_(frame_factory)\r
  95                 , filter_str_(filter_str)\r
  96                 , force_deinterlacing_(false)\r
  97         {\r
  98                 video_streams_.push(std::queue<spl::shared_ptr<write_frame>>());\r
  99                 audio_streams_.push(core::audio_buffer());\r
 100                 \r
 101                 // Note: Uses 1 step rotated cadence for 1001 modes (1602, 1602, 1601, 1602, 1601)\r
 102                 // This cadence fills the audio mixer most optimally.\r
 103                 boost::range::rotate(audio_cadence_, std::end(audio_cadence_)-1);\r
 104         }\r
 105 \r
 106         void push(const std::shared_ptr<AVFrame>& video_frame, int flags)\r
 107         {               \r
 108                 if(!video_frame)\r
 109                         return;\r
 110                 \r
 111                 if(video_frame == flush_video())\r
 112                 {       \r
 113                         video_streams_.push(std::queue<spl::shared_ptr<write_frame>>());\r
 114                 }\r
 115                 else if(video_frame == empty_video())\r
 116                 {\r
 117                         video_streams_.back().push(spl::make_shared<core::write_frame>(this));\r
 118                         display_mode_ = display_mode::simple;\r
 119                 }\r
 120                 else\r
 121                 {\r
 122                         bool DEINTERLACE_FLAG = (flags & core::frame_producer::flags::deinterlace) != 0;\r
 123                 \r
 124                         if(auto_deinterlace_ && force_deinterlacing_ != DEINTERLACE_FLAG)\r
 125                         {\r
 126                                 force_deinterlacing_ = DEINTERLACE_FLAG;\r
 127                                 display_mode_ = display_mode::invalid;\r
 128                         }\r
 129 \r
 130                         if(display_mode_ == display_mode::invalid)\r
 131                                 update_display_mode(video_frame, force_deinterlacing_);\r
 132                                 \r
 133                         if(flags & core::frame_producer::flags::alpha_only)\r
 134                                 video_frame->format = make_alpha_format(video_frame->format);\r
 135                 \r
 136                         auto format = video_frame->format;\r
 137                         if(video_frame->format == CASPAR_PIX_FMT_LUMA) // CASPAR_PIX_FMT_LUMA is not valid for filter, change it to GRAY8\r
 138                                 video_frame->format = PIX_FMT_GRAY8;\r
 139 \r
 140                         filter_.push(video_frame);\r
 141                         BOOST_FOREACH(auto& av_frame, filter_.poll_all())\r
 142                         {\r
 143                                 if(video_frame->format == PIX_FMT_GRAY8 && format == CASPAR_PIX_FMT_LUMA)\r
 144                                         av_frame->format = format;\r
 145 \r
 146                                 video_streams_.back().push(make_write_frame(this, av_frame, frame_factory_, flags));\r
 147                         }\r
 148                 }\r
 149 \r
 150                 if(video_streams_.back().size() > 32)\r
 151                         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
 152         }\r
 153 \r
 154         void push(const std::shared_ptr<core::audio_buffer>& audio)\r
 155         {\r
 156                 if(!audio)      \r
 157                         return;\r
 158 \r
 159                 if(audio == flush_audio())\r
 160                 {\r
 161                         audio_streams_.push(core::audio_buffer());\r
 162                 }\r
 163                 else if(audio == empty_audio())\r
 164                 {\r
 165                         boost::range::push_back(audio_streams_.back(), core::audio_buffer(audio_cadence_.front(), 0));\r
 166                 }\r
 167                 else\r
 168                 {\r
 169                         boost::range::push_back(audio_streams_.back(), *audio);\r
 170                 }\r
 171 \r
 172                 if(audio_streams_.back().size() > static_cast<size_t>(32*audio_cadence_.front()))\r
 173                         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
 174         }\r
 175         \r
 176         bool video_ready() const\r
 177         {               \r
 178                 return video_streams_.size() > 1 || (video_streams_.size() >= audio_streams_.size() && video_ready2());\r
 179         }\r
 180         \r
 181         bool audio_ready() const\r
 182         {\r
 183                 return audio_streams_.size() > 1 || (audio_streams_.size() >= video_streams_.size() && audio_ready2());\r
 184         }\r
 185 \r
 186         bool video_ready2() const\r
 187         {               \r
 188                 switch(display_mode_)\r
 189                 {\r
 190                 case display_mode::deinterlace_bob_reinterlace:                                 \r
 191                 case display_mode::interlace:   \r
 192                 case display_mode::half:\r
 193                         return video_streams_.front().size() >= 2;\r
 194                 default:                                                                                \r
 195                         return video_streams_.front().size() >= 1;\r
 196                 }\r
 197         }\r
 198         \r
 199         bool audio_ready2() const\r
 200         {\r
 201                 switch(display_mode_)\r
 202                 {\r
 203                 case display_mode::duplicate:                                   \r
 204                         return audio_streams_.front().size()/2 >= static_cast<size_t>(audio_cadence_.front());\r
 205                 default:                                                                                \r
 206                         return audio_streams_.front().size() >= static_cast<size_t>(audio_cadence_.front());\r
 207                 }\r
 208         }\r
 209                 \r
 210         std::shared_ptr<draw_frame> poll()\r
 211         {\r
 212                 if(!frame_buffer_.empty())\r
 213                 {\r
 214                         auto frame = frame_buffer_.front();\r
 215                         frame_buffer_.pop();    \r
 216                         return frame;\r
 217                 }\r
 218 \r
 219                 if(video_streams_.size() > 1 && audio_streams_.size() > 1 && (!video_ready2() || !audio_ready2()))\r
 220                 {\r
 221                         if(!video_streams_.front().empty() || !audio_streams_.front().empty())\r
 222                                 CASPAR_LOG(trace) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";\r
 223 \r
 224                         video_streams_.pop();\r
 225                         audio_streams_.pop();\r
 226                 }\r
 227 \r
 228                 if(!video_ready2() || !audio_ready2() || display_mode_ == display_mode::invalid)\r
 229                         return nullptr;\r
 230                                 \r
 231                 auto frame1                             = pop_video();\r
 232                 frame1->audio_data()    = pop_audio();\r
 233 \r
 234                 switch(display_mode_)\r
 235                 {\r
 236                 case display_mode::simple:                                              \r
 237                 case display_mode::deinterlace_bob:                             \r
 238                 case display_mode::deinterlace: \r
 239                         {\r
 240                                 frame_buffer_.push(frame1);\r
 241                                 break;\r
 242                         }\r
 243                 case display_mode::interlace:                                   \r
 244                 case display_mode::deinterlace_bob_reinterlace: \r
 245                         {                               \r
 246                                 auto frame2 = pop_video();\r
 247 \r
 248                                 frame_buffer_.push(core::draw_frame::interlace(frame1, frame2, format_desc_.field_mode));       \r
 249                                 break;\r
 250                         }\r
 251                 case display_mode::duplicate:   \r
 252                         {\r
 253                                 boost::range::push_back(frame1->audio_data(), pop_audio());\r
 254 \r
 255                                 frame_buffer_.push(frame1);\r
 256                                 frame_buffer_.push(frame1);\r
 257                                 break;\r
 258                         }\r
 259                 case display_mode::half:        \r
 260                         {                               \r
 261                                 pop_video(); // Throw away\r
 262 \r
 263                                 frame_buffer_.push(frame1);\r
 264                                 break;\r
 265                         }\r
 266                 }\r
 267                 \r
 268                 return frame_buffer_.empty() ? nullptr : poll();\r
 269         }\r
 270         \r
 271         spl::shared_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() >= static_cast<size_t>(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 update_display_mode(const std::shared_ptr<AVFrame>& frame, bool force_deinterlace)\r
 294         {\r
 295                 std::wstring filter_str = filter_str_;\r
 296 \r
 297                 display_mode_ = display_mode::simple;\r
 298                 if(auto_transcode_)\r
 299                 {\r
 300                         auto mode = get_mode(*frame);\r
 301                         auto fps  = in_fps_;\r
 302 \r
 303                         if(filter::is_deinterlacing(filter_str_))\r
 304                                 mode = core::field_mode::progressive;\r
 305 \r
 306                         if(filter::is_double_rate(filter_str_))\r
 307                                 fps *= 2;\r
 308                         \r
 309                         display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 310                         \r
 311                         if((frame->height != 480 || format_desc_.height != 486) && // don't deinterlace for NTSC DV\r
 312                                         display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && \r
 313                                         frame->height != static_cast<int>(format_desc_.height))\r
 314                         {\r
 315                                 display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 316                         }\r
 317 \r
 318                         if(force_deinterlace && mode != core::field_mode::progressive && \r
 319                            display_mode_ != display_mode::deinterlace && \r
 320                            display_mode_ != display_mode::deinterlace_bob && \r
 321                            display_mode_ != display_mode::deinterlace_bob_reinterlace)                  \r
 322                         {       \r
 323                                 CASPAR_LOG(info) << L"[frame_muxer] Automatically started non bob-deinterlacing. Consider starting producer with bob-deinterlacing (FILTER DEINTERLACE_BOB) for smoothest playback.";\r
 324                                 display_mode_ = display_mode::deinterlace;\r
 325                         }\r
 326 \r
 327                         if(display_mode_ == display_mode::deinterlace)\r
 328                                 filter_str = append_filter(filter_str, L"YADIF=0:-1");\r
 329                         else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)\r
 330                                 filter_str = append_filter(filter_str, L"YADIF=1:-1");\r
 331                 }\r
 332 \r
 333                 if(display_mode_ == display_mode::invalid)\r
 334                 {\r
 335                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";\r
 336                         display_mode_ = display_mode::simple;\r
 337                 }\r
 338                         \r
 339                 if(!boost::iequals(filter_.filter_str(), filter_str))\r
 340                 {\r
 341                         for(int n = 0; n < filter_.delay(); ++n)\r
 342                         {\r
 343                                 filter_.push(frame);\r
 344                                 auto av_frame = filter_.poll();\r
 345                                 if(av_frame)                                                    \r
 346                                         video_streams_.back().push(make_write_frame(this, spl::make_shared_ptr(av_frame), frame_factory_, 0));\r
 347                         }\r
 348                         filter_ = filter(filter_str);\r
 349                         CASPAR_LOG(info) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);\r
 350                 }\r
 351         }\r
 352         \r
 353         uint32_t calc_nb_frames(uint32_t nb_frames) const\r
 354         {\r
 355                 uint64_t nb_frames2 = nb_frames;\r
 356                 \r
 357                 if(filter_.is_double_rate()) // Take into account transformations in filter.\r
 358                         nb_frames2 *= 2;\r
 359 \r
 360                 switch(display_mode_) // Take into account transformation in run.\r
 361                 {\r
 362                 case display_mode::deinterlace_bob_reinterlace:\r
 363                 case display_mode::interlace:   \r
 364                 case display_mode::half:\r
 365                         nb_frames2 /= 2;\r
 366                         break;\r
 367                 case display_mode::duplicate:\r
 368                         nb_frames2 *= 2;\r
 369                         break;\r
 370                 }\r
 371 \r
 372                 return static_cast<uint32_t>(nb_frames2);\r
 373         }\r
 374 };\r
 375 \r
 376 frame_muxer::frame_muxer(double in_fps, const spl::shared_ptr<core::frame_factory>& frame_factory, const std::wstring& filter)\r
 377         : impl_(new impl(in_fps, frame_factory, filter)){}\r
 378 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame, int flags){impl_->push(video_frame, flags);}\r
 379 void frame_muxer::push(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push(audio_samples);}\r
 380 std::shared_ptr<draw_frame> frame_muxer::poll(){return impl_->poll();}\r
 381 uint32_t frame_muxer::calc_nb_frames(uint32_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}\r
 382 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 383 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 384 \r
 385 }}