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_video(const std::shared_ptr<AVFrame>& video_frame)\r
 101         {               \r
 102                 if(!video_frame)\r
 103                         return;\r
 104                 \r
 105                 if(video_frame == flush_video())\r
 106                 {       \r
 107                         video_streams_.push(std::queue<core::mutable_frame>());\r
 108                 }\r
 109                 else if(video_frame == empty_video())\r
 110                 {\r
 111                         auto empty_frame = frame_factory_->create_frame(this, core::pixel_format_desc(core::pixel_format::invalid));\r
 112                         video_streams_.back().push(std::move(empty_frame));\r
 113                         display_mode_ = display_mode::simple;\r
 114                 }\r
 115                 else\r
 116                 {\r
 117                         if(display_mode_ == display_mode::invalid)\r
 118                                 update_display_mode(video_frame);\r
 119                                 \r
 120                         filter_.push(video_frame);\r
 121                         BOOST_FOREACH(auto& av_frame, filter_.poll_all())                       \r
 122                                 video_streams_.back().push(make_frame(this, av_frame, format_desc_.fps, *frame_factory_));                      \r
 123                 }\r
 124 \r
 125                 if(video_streams_.back().size() > 32)\r
 126                         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
 127         }\r
 128 \r
 129         void push_audio(const std::shared_ptr<core::audio_buffer>& audio)\r
 130         {\r
 131                 if(!audio)      \r
 132                         return;\r
 133 \r
 134                 if(audio == flush_audio())\r
 135                 {\r
 136                         audio_streams_.push(core::audio_buffer());\r
 137                 }\r
 138                 else if(audio == empty_audio())\r
 139                 {\r
 140                         boost::range::push_back(audio_streams_.back(), core::audio_buffer(audio_cadence_.front(), 0));\r
 141                 }\r
 142                 else\r
 143                 {\r
 144                         boost::range::push_back(audio_streams_.back(), *audio);\r
 145                 }\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         \r
 151         bool video_ready() const\r
 152         {               \r
 153                 return video_streams_.size() > 1 || (video_streams_.size() >= audio_streams_.size() && video_ready2());\r
 154         }\r
 155         \r
 156         bool audio_ready() const\r
 157         {\r
 158                 return audio_streams_.size() > 1 || (audio_streams_.size() >= video_streams_.size() && audio_ready2());\r
 159         }\r
 160 \r
 161         bool video_ready2() const\r
 162         {               \r
 163                 switch(display_mode_)\r
 164                 {\r
 165                 case display_mode::deinterlace_bob_reinterlace:                                 \r
 166                 case display_mode::interlace:   \r
 167                 case display_mode::half:\r
 168                         return video_streams_.front().size() >= 2;\r
 169                 default:                                                                                \r
 170                         return video_streams_.front().size() >= 1;\r
 171                 }\r
 172         }\r
 173         \r
 174         bool audio_ready2() const\r
 175         {\r
 176                 switch(display_mode_)\r
 177                 {\r
 178                 case display_mode::duplicate:                                   \r
 179                         return audio_streams_.front().size()/2 >= static_cast<size_t>(audio_cadence_.front());\r
 180                 default:                                                                                \r
 181                         return audio_streams_.front().size() >= static_cast<size_t>(audio_cadence_.front());\r
 182                 }\r
 183         }\r
 184                 \r
 185         bool try_pop(core::draw_frame& result)\r
 186         {\r
 187                 if(!frame_buffer_.empty())\r
 188                 {\r
 189                         result = std::move(frame_buffer_.front());\r
 190                         frame_buffer_.pop();    \r
 191                         return true;\r
 192                 }\r
 193 \r
 194                 if(video_streams_.size() > 1 && audio_streams_.size() > 1 && (!video_ready2() || !audio_ready2()))\r
 195                 {\r
 196                         if(!video_streams_.front().empty() || !audio_streams_.front().empty())\r
 197                                 CASPAR_LOG(trace) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";\r
 198 \r
 199                         video_streams_.pop();\r
 200                         audio_streams_.pop();\r
 201                 }\r
 202 \r
 203                 if(!video_ready2() || !audio_ready2() || display_mode_ == display_mode::invalid)\r
 204                         return false;\r
 205                                 \r
 206                 auto frame1                             = pop_video();\r
 207                 frame1.audio_data()     = pop_audio();\r
 208 \r
 209                 switch(display_mode_)\r
 210                 {\r
 211                 case display_mode::simple:                                              \r
 212                 case display_mode::deinterlace_bob:                             \r
 213                 case display_mode::deinterlace: \r
 214                         {\r
 215                                 frame_buffer_.push(core::draw_frame(std::move(frame1)));\r
 216                                 break;\r
 217                         }\r
 218                 case display_mode::interlace:                                   \r
 219                 case display_mode::deinterlace_bob_reinterlace: \r
 220                         {                               \r
 221                                 auto frame2 = pop_video();\r
 222 \r
 223                                 frame_buffer_.push(core::draw_frame::interlace(\r
 224                                         core::draw_frame(std::move(frame1)),\r
 225                                         core::draw_frame(std::move(frame2)),\r
 226                                         format_desc_.field_mode));      \r
 227                                 break;\r
 228                         }\r
 229                 case display_mode::duplicate:   \r
 230                         {\r
 231                                 boost::range::push_back(frame1.audio_data(), pop_audio());\r
 232 \r
 233                                 auto draw_frame = core::draw_frame(std::move(frame1));\r
 234                                 frame_buffer_.push(draw_frame);\r
 235                                 frame_buffer_.push(draw_frame);\r
 236                                 break;\r
 237                         }\r
 238                 case display_mode::half:        \r
 239                         {                               \r
 240                                 pop_video(); // Throw away\r
 241 \r
 242                                 frame_buffer_.push(core::draw_frame(std::move(frame1)));\r
 243                                 break;\r
 244                         }\r
 245                 default:\r
 246                         BOOST_THROW_EXCEPTION(invalid_operation());\r
 247                 }\r
 248                 \r
 249                 return try_pop(result);\r
 250         }\r
 251         \r
 252         core::mutable_frame pop_video()\r
 253         {\r
 254                 auto frame = std::move(video_streams_.front().front());\r
 255                 video_streams_.front().pop();           \r
 256                 return std::move(frame);\r
 257         }\r
 258 \r
 259         core::audio_buffer pop_audio()\r
 260         {\r
 261                 CASPAR_VERIFY(audio_streams_.front().size() >= static_cast<size_t>(audio_cadence_.front()));\r
 262 \r
 263                 auto begin = audio_streams_.front().begin();\r
 264                 auto end   = begin + audio_cadence_.front();\r
 265 \r
 266                 core::audio_buffer samples(begin, end);\r
 267                 audio_streams_.front().erase(begin, end);\r
 268                 \r
 269                 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);\r
 270 \r
 271                 return samples;\r
 272         }\r
 273                                 \r
 274         void update_display_mode(const std::shared_ptr<AVFrame>& frame)\r
 275         {\r
 276                 std::wstring filter_str = filter_str_;\r
 277 \r
 278                 display_mode_ = display_mode::simple;\r
 279 \r
 280                 auto mode = get_mode(*frame);\r
 281                 auto fps  = in_fps_;\r
 282 \r
 283                 if(filter::is_deinterlacing(filter_str_))\r
 284                         mode = core::field_mode::progressive;\r
 285 \r
 286                 if(filter::is_double_rate(filter_str_))\r
 287                         fps *= 2;\r
 288                         \r
 289                 display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 290                         \r
 291                 if((frame->height != 480 || format_desc_.height != 486) && // don't deinterlace for NTSC DV\r
 292                                 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && \r
 293                                 frame->height != format_desc_.height)\r
 294                 {\r
 295                         display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 296                 }\r
 297                 \r
 298                 if(display_mode_ == display_mode::deinterlace)\r
 299                         filter_str = append_filter(filter_str, L"YADIF=0:-1");\r
 300                 else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)\r
 301                         filter_str = append_filter(filter_str, L"YADIF=1:-1");\r
 302 \r
 303                 if(display_mode_ == display_mode::invalid)\r
 304                 {\r
 305                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";\r
 306                         display_mode_ = display_mode::simple;\r
 307                 }\r
 308                         \r
 309                 if(!boost::iequals(filter_.filter_str(), filter_str))\r
 310                 {\r
 311                         for(int n = 0; n < filter_.delay(); ++n)\r
 312                         {\r
 313                                 filter_.push(frame);\r
 314                                 auto av_frame = filter_.poll();\r
 315                                 if(av_frame)                                                    \r
 316                                         video_streams_.back().push(make_frame(this, spl::make_shared_ptr(av_frame), format_desc_.fps, *frame_factory_));\r
 317                         }\r
 318                         filter_ = filter(filter_str);\r
 319                         CASPAR_LOG(info) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);\r
 320                 }\r
 321         }\r
 322         \r
 323         uint32_t calc_nb_frames(uint32_t nb_frames) const\r
 324         {\r
 325                 uint64_t nb_frames2 = nb_frames;\r
 326                 \r
 327                 if(filter_.is_double_rate()) // Take into account transformations in filter.\r
 328                         nb_frames2 *= 2;\r
 329 \r
 330                 switch(display_mode_) // Take into account transformation in run.\r
 331                 {\r
 332                 case display_mode::deinterlace_bob_reinterlace:\r
 333                 case display_mode::interlace:   \r
 334                 case display_mode::half:\r
 335                         nb_frames2 /= 2;\r
 336                         break;\r
 337                 case display_mode::duplicate:\r
 338                         nb_frames2 *= 2;\r
 339                         break;\r
 340                 }\r
 341 \r
 342                 return static_cast<uint32_t>(nb_frames2);\r
 343         }\r
 344 };\r
 345 \r
 346 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
 347         : impl_(new impl(in_fps, frame_factory, format_desc, filter)){}\r
 348 void frame_muxer::push_video(const std::shared_ptr<AVFrame>& video_frame){impl_->push_video(video_frame);}\r
 349 void frame_muxer::push_audio(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push_audio(audio_samples);}\r
 350 bool frame_muxer::try_pop(core::draw_frame& result){return impl_->try_pop(result);}\r
 351 uint32_t frame_muxer::calc_nb_frames(uint32_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}\r
 352 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 353 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 354 \r
 355 }}