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<core::mutable_frame>                                 video_stream_;\r
  71         core::audio_buffer                                                              audio_stream_;\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                 // Note: Uses 1 step rotated cadence for 1001 modes (1602, 1602, 1601, 1602, 1601)\r
  93                 // This cadence fills the audio mixer most optimally.\r
  94                 boost::range::rotate(audio_cadence_, std::end(audio_cadence_)-1);\r
  95         }\r
  96 \r
  97         void push(const std::shared_ptr<AVFrame>& video)\r
  98         {               \r
  99                 if(video == empty_video())\r
 100                 {\r
 101                         auto empty_frame = frame_factory_->create_frame(this, core::pixel_format_desc(core::pixel_format::invalid));\r
 102                         video_stream_.push(std::move(empty_frame));\r
 103                         display_mode_ = display_mode::simple;\r
 104                 }\r
 105                 else if(video)\r
 106                 {\r
 107                         if(display_mode_ == display_mode::invalid)\r
 108                                 update_display_mode(video);\r
 109                                 \r
 110                         filter_.push(video);\r
 111                         BOOST_FOREACH(auto& av_frame, filter_.poll_all())                       \r
 112                                 video_stream_.push(make_frame(this, av_frame, format_desc_.fps, *frame_factory_));                      \r
 113                 }\r
 114 \r
 115                 merge();\r
 116         }\r
 117 \r
 118         void push(const std::shared_ptr<core::audio_buffer>& audio)\r
 119         {\r
 120                 if(audio == empty_audio())              \r
 121                         boost::range::push_back(audio_stream_, core::audio_buffer(audio_cadence_.front(), 0));          \r
 122                 else if(audio)  \r
 123                         boost::range::push_back(audio_stream_, *audio);         \r
 124 \r
 125                 merge();\r
 126         }\r
 127         \r
 128         bool video_ready() const\r
 129         {               \r
 130                 switch(display_mode_)\r
 131                 {\r
 132                 case display_mode::deinterlace_bob_reinterlace:                                 \r
 133                 case display_mode::interlace:   \r
 134                 case display_mode::half:\r
 135                         return video_stream_.size() >= 2;\r
 136                 default:                                                                                \r
 137                         return video_stream_.size() >= 1;\r
 138                 }\r
 139         }\r
 140         \r
 141         bool audio_ready() const\r
 142         {\r
 143                 switch(display_mode_)\r
 144                 {\r
 145                 case display_mode::duplicate:                                   \r
 146                         return audio_stream_.size() >= static_cast<size_t>(audio_cadence_[0] + audio_cadence_[1 % audio_cadence_.size()]);\r
 147                 default:                                                                                \r
 148                         return audio_stream_.size() >= static_cast<size_t>(audio_cadence_.front());\r
 149                 }\r
 150         }\r
 151 \r
 152         bool empty() const\r
 153         {\r
 154                 return frame_buffer_.empty();\r
 155         }\r
 156 \r
 157         core::draw_frame front() const\r
 158         {\r
 159                 return frame_buffer_.front();\r
 160         }\r
 161 \r
 162         void pop()\r
 163         {\r
 164                 frame_buffer_.pop();\r
 165         }\r
 166                 \r
 167         void merge()\r
 168         {\r
 169                 while(video_ready() && audio_ready() && display_mode_ != display_mode::invalid)\r
 170                 {                               \r
 171                         auto frame1                     = pop_video();\r
 172                         frame1.audio_data()     = pop_audio();\r
 173 \r
 174                         switch(display_mode_)\r
 175                         {\r
 176                         case display_mode::simple:                                              \r
 177                         case display_mode::deinterlace_bob:                             \r
 178                         case display_mode::deinterlace: \r
 179                                 {\r
 180                                         frame_buffer_.push(core::draw_frame(std::move(frame1)));\r
 181                                         break;\r
 182                                 }\r
 183                         case display_mode::interlace:                                   \r
 184                         case display_mode::deinterlace_bob_reinterlace: \r
 185                                 {                               \r
 186                                         auto frame2 = pop_video();\r
 187 \r
 188                                         frame_buffer_.push(core::draw_frame::interlace(\r
 189                                                 core::draw_frame(std::move(frame1)),\r
 190                                                 core::draw_frame(std::move(frame2)),\r
 191                                                 format_desc_.field_mode));      \r
 192                                         break;\r
 193                                 }\r
 194                         case display_mode::duplicate:   \r
 195                                 {\r
 196                                         boost::range::push_back(frame1.audio_data(), pop_audio());\r
 197 \r
 198                                         auto draw_frame = core::draw_frame(std::move(frame1));\r
 199                                         frame_buffer_.push(draw_frame);\r
 200                                         frame_buffer_.push(draw_frame);\r
 201                                         break;\r
 202                                 }\r
 203                         case display_mode::half:        \r
 204                                 {                               \r
 205                                         pop_video(); // Throw away\r
 206 \r
 207                                         frame_buffer_.push(core::draw_frame(std::move(frame1)));\r
 208                                         break;\r
 209                                 }\r
 210                         default:\r
 211                                 BOOST_THROW_EXCEPTION(invalid_operation());\r
 212                         }\r
 213                 }\r
 214         }\r
 215         \r
 216         core::mutable_frame pop_video()\r
 217         {\r
 218                 auto frame = std::move(video_stream_.front());\r
 219                 video_stream_.pop();            \r
 220                 return std::move(frame);\r
 221         }\r
 222 \r
 223         core::audio_buffer pop_audio()\r
 224         {\r
 225                 if(audio_stream_.size() < audio_cadence_.front())\r
 226                         BOOST_THROW_EXCEPTION(out_of_range());\r
 227 \r
 228                 auto begin = audio_stream_.begin();\r
 229                 auto end   = begin + audio_cadence_.front();\r
 230 \r
 231                 core::audio_buffer samples(begin, end);\r
 232                 audio_stream_.erase(begin, end);\r
 233                 \r
 234                 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);\r
 235 \r
 236                 return samples;\r
 237         }\r
 238                                 \r
 239         void update_display_mode(const std::shared_ptr<AVFrame>& frame)\r
 240         {\r
 241                 std::wstring filter_str = filter_str_;\r
 242 \r
 243                 display_mode_ = display_mode::simple;\r
 244 \r
 245                 auto mode = get_mode(*frame);\r
 246                 if(mode == core::field_mode::progressive && frame->height < 720 && in_fps_ < 50.0) // SD frames are interlaced. Probably incorrect meta-data. Fix it.\r
 247                         mode = core::field_mode::upper;\r
 248 \r
 249                 auto fps  = in_fps_;\r
 250 \r
 251                 if(filter::is_deinterlacing(filter_str_))\r
 252                         mode = core::field_mode::progressive;\r
 253 \r
 254                 if(filter::is_double_rate(filter_str_))\r
 255                         fps *= 2;\r
 256                         \r
 257                 display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);\r
 258                         \r
 259                 if((frame->height != 480 || format_desc_.height != 486) && // don't deinterlace for NTSC DV\r
 260                                 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive && \r
 261                                 frame->height != format_desc_.height)\r
 262                 {\r
 263                         display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace \r
 264                 }\r
 265 \r
 266                 // ALWAYS de-interlace, until we have GPU de-interlacing.\r
 267                 if(frame->interlaced_frame && display_mode_ != display_mode::deinterlace_bob && display_mode_ != display_mode::deinterlace)\r
 268                         display_mode_ = display_mode::deinterlace_bob_reinterlace;\r
 269                 \r
 270                 if(display_mode_ == display_mode::deinterlace)\r
 271                         filter_str = append_filter(filter_str, L"YADIF=0:-1");\r
 272                 else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)\r
 273                         filter_str = append_filter(filter_str, L"YADIF=1:-1");\r
 274 \r
 275                 if(display_mode_ == display_mode::invalid)\r
 276                 {\r
 277                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";\r
 278                         display_mode_ = display_mode::simple;\r
 279                 }\r
 280 \r
 281                 filter_ = filter(filter_str);\r
 282                 CASPAR_LOG(info) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);\r
 283         }\r
 284         \r
 285         uint32_t calc_nb_frames(uint32_t nb_frames) const\r
 286         {\r
 287                 uint64_t nb_frames2 = nb_frames;\r
 288                 \r
 289                 if(filter_.is_double_rate()) // Take into account transformations in filter.\r
 290                         nb_frames2 *= 2;\r
 291 \r
 292                 switch(display_mode_) // Take into account transformation in run.\r
 293                 {\r
 294                 case display_mode::deinterlace_bob_reinterlace:\r
 295                 case display_mode::interlace:   \r
 296                 case display_mode::half:\r
 297                         nb_frames2 /= 2;\r
 298                         break;\r
 299                 case display_mode::duplicate:\r
 300                         nb_frames2 *= 2;\r
 301                         break;\r
 302                 }\r
 303 \r
 304                 return static_cast<uint32_t>(nb_frames2);\r
 305         }\r
 306 \r
 307         void clear()\r
 308         {\r
 309                 while(!video_stream_.empty())\r
 310                         video_stream_.pop();    \r
 311 \r
 312                 audio_stream_.clear();\r
 313 \r
 314                 while(!frame_buffer_.empty())\r
 315                         frame_buffer_.pop();\r
 316 \r
 317                 filter_ = filter(filter_.filter_str());\r
 318         }\r
 319 };\r
 320 \r
 321 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
 322         : impl_(new impl(in_fps, frame_factory, format_desc, filter)){}\r
 323 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame){impl_->push(video_frame);}\r
 324 void frame_muxer::push(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push(audio_samples);}\r
 325 bool frame_muxer::empty() const{return impl_->empty();}\r
 326 core::draw_frame frame_muxer::front() const{return impl_->front();}\r
 327 void frame_muxer::pop(){return impl_->pop();}\r
 328 void frame_muxer::clear(){impl_->clear();}\r
 329 uint32_t frame_muxer::calc_nb_frames(uint32_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}\r
 330 bool frame_muxer::video_ready() const{return impl_->video_ready();}\r
 331 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}\r
 332 \r
 333 }}