git.sesse.net Git - casparcg/blob - modules/ffmpeg/producer/muxer/frame_muxer.cpp

   1 /*
   2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
   3 *
   4 * This file is part of CasparCG (www.casparcg.com).
   5 *
   6 * CasparCG is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * CasparCG is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
  18 *
  19 * Author: Robert Nagy, ronag89@gmail.com
  20 */
  21
  22 #include "../../StdAfx.h"
  23
  24 #include "frame_muxer.h"
  25
  26 #include "../filter/filter.h"
  27 #include "../util/util.h"
  28
  29 #include <core/producer/frame_producer.h>
  30 #include <core/frame/draw_frame.h>
  31 #include <core/frame/frame_transform.h>
  32 #include <core/frame/pixel_format.h>
  33 #include <core/frame/frame_factory.h>
  34 #include <core/frame/frame.h>
  35
  36 #include <common/env.h>
  37 #include <common/except.h>
  38 #include <common/log.h>
  39
  40 #if defined(_MSC_VER)
  41 #pragma warning (push)
  42 #pragma warning (disable : 4244)
  43 #endif
  44 extern "C"
  45 {
  46         #define __STDC_CONSTANT_MACROS
  47         #define __STDC_LIMIT_MACROS
  48         #include <libavcodec/avcodec.h>
  49         #include <libavformat/avformat.h>
  50 }
  51 #if defined(_MSC_VER)
  52 #pragma warning (pop)
  53 #endif
  54
  55 #include <common/assert.h>
  56 #include <boost/range/algorithm_ext/push_back.hpp>
  57 #include <boost/algorithm/string/predicate.hpp>
  58
  59 #include <deque>
  60 #include <queue>
  61 #include <vector>
  62
  63 using namespace caspar::core;
  64
  65 namespace caspar { namespace ffmpeg {
  66
  67 struct frame_muxer::impl : boost::noncopyable
  68 {
  69         std::queue<core::mutable_frame>                                 video_stream_;
  70         core::audio_buffer                                                              audio_stream_;
  71         std::queue<draw_frame>                                                  frame_buffer_;
  72         display_mode                                                                    display_mode_;
  73         const double                                                                    in_fps_;
  74         const video_format_desc                                                 format_desc_;
  75
  76         std::vector<int>                                                                audio_cadence_;
  77
  78         spl::shared_ptr<core::frame_factory>                    frame_factory_;
  79
  80         std::unique_ptr<filter>                                                 filter_;
  81         const std::wstring                                                              filter_str_;
  82         bool                                                                                    force_deinterlacing_;
  83
  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)
  85                 : display_mode_(display_mode::invalid)
  86                 , in_fps_(in_fps)
  87                 , format_desc_(format_desc)
  88                 , audio_cadence_(format_desc_.audio_cadence)
  89                 , frame_factory_(frame_factory)
  90                 , filter_str_(filter_str)
  91                 , force_deinterlacing_(env::properties().get(L"configuration.force-deinterlace", true))
  92         {
  93                 // Note: Uses 1 step rotated cadence for 1001 modes (1602, 1602, 1601, 1602, 1601)
  94                 // This cadence fills the audio mixer most optimally.
  95                 boost::range::rotate(audio_cadence_, std::end(audio_cadence_)-1);
  96         }
  97
  98         void push_video(const std::shared_ptr<AVFrame>& video)
  99         {
 100                 if(!video)
 101                         return;
 102
 103                 if(!video->data[0])
 104                 {
 105                         auto empty_frame = frame_factory_->create_frame(this, core::pixel_format_desc(core::pixel_format::invalid));
 106                         video_stream_.push(std::move(empty_frame));
 107                         display_mode_ = display_mode::simple;
 108                 }
 109                 else
 110                 {
 111                         if(!filter_ || display_mode_ == display_mode::invalid)
 112                                 update_display_mode(video);
 113
 114                         filter_->push(video);
 115                         for (auto& av_frame : filter_->poll_all())
 116                                 video_stream_.push(make_frame(this, av_frame, format_desc_.fps, *frame_factory_));
 117                 }
 118
 119                 merge();
 120         }
 121
 122         void push_audio(const std::shared_ptr<AVFrame>& audio)
 123         {
 124                 if(!audio)
 125                         return;
 126
 127                 if(!audio->data[0])
 128                 {
 129                         boost::range::push_back(audio_stream_, core::audio_buffer(audio_cadence_.front() * format_desc_.audio_channels, 0));
 130                 }
 131                 else
 132                 {
 133                         auto ptr = reinterpret_cast<int32_t*>(audio->data[0]);
 134                         audio_stream_.insert(audio_stream_.end(), ptr, ptr + audio->linesize[0]/sizeof(int32_t));
 135                 }
 136
 137                 merge();
 138         }
 139
 140         bool video_ready() const
 141         {
 142                 switch(display_mode_)
 143                 {
 144                 case display_mode::deinterlace_bob_reinterlace:
 145                 case display_mode::interlace:
 146                 case display_mode::half:
 147                         return video_stream_.size() >= 2;
 148                 default:
 149                         return video_stream_.size() >= 1;
 150                 }
 151         }
 152
 153         bool audio_ready() const
 154         {
 155                 switch(display_mode_)
 156                 {
 157                 case display_mode::duplicate:
 158                         return audio_stream_.size() >= static_cast<size_t>(audio_cadence_[0] + audio_cadence_[1 % audio_cadence_.size()]) * format_desc_.audio_channels;
 159                 default:
 160                         return audio_stream_.size() >= static_cast<size_t>(audio_cadence_.front()) * format_desc_.audio_channels;
 161                 }
 162         }
 163
 164         bool empty() const
 165         {
 166                 return frame_buffer_.empty();
 167         }
 168
 169         core::draw_frame front() const
 170         {
 171                 return frame_buffer_.front();
 172         }
 173
 174         void pop()
 175         {
 176                 frame_buffer_.pop();
 177         }
 178
 179         void merge()
 180         {
 181                 while(video_ready() && audio_ready() && display_mode_ != display_mode::invalid)
 182                 {
 183                         auto frame1                     = pop_video();
 184                         frame1.audio_data()     = pop_audio();
 185
 186                         switch(display_mode_)
 187                         {
 188                         case display_mode::simple:
 189                         case display_mode::deinterlace_bob:
 190                         case display_mode::deinterlace:
 191                                 {
 192                                         frame_buffer_.push(core::draw_frame(std::move(frame1)));
 193                                         break;
 194                                 }
 195                         case display_mode::interlace:
 196                         case display_mode::deinterlace_bob_reinterlace:
 197                                 {
 198                                         auto frame2 = pop_video();
 199
 200                                         frame_buffer_.push(core::draw_frame::interlace(
 201                                                 core::draw_frame(std::move(frame1)),
 202                                                 core::draw_frame(std::move(frame2)),
 203                                                 format_desc_.field_mode));
 204                                         break;
 205                                 }
 206                         case display_mode::duplicate:
 207                                 {
 208                                         //boost::range::push_back(frame1.audio_data(), pop_audio());
 209
 210                                         auto second_audio_frame = core::mutable_frame(
 211                                                         std::vector<array<std::uint8_t>>(),
 212                                                         pop_audio(),
 213                                                         frame1.data_tag(),
 214                                                         core::pixel_format_desc());
 215                                         auto first_frame = core::draw_frame(std::move(frame1));
 216                                         auto muted_first_frame = core::draw_frame(first_frame);
 217                                         muted_first_frame.transform().audio_transform.volume = 0;
 218                                         auto second_frame = core::draw_frame({ core::draw_frame(std::move(second_audio_frame)), muted_first_frame });
 219
 220                                         // Same video but different audio.
 221                                         frame_buffer_.push(first_frame);
 222                                         frame_buffer_.push(second_frame);
 223                                         break;
 224                                 }
 225                         case display_mode::half:
 226                                 {
 227                                         pop_video(); // Throw away
 228
 229                                         frame_buffer_.push(core::draw_frame(std::move(frame1)));
 230                                         break;
 231                                 }
 232                         default:
 233                                 CASPAR_THROW_EXCEPTION(invalid_operation());
 234                         }
 235                 }
 236         }
 237
 238         core::mutable_frame pop_video()
 239         {
 240                 auto frame = std::move(video_stream_.front());
 241                 video_stream_.pop();
 242                 return std::move(frame);
 243         }
 244
 245         core::audio_buffer pop_audio()
 246         {
 247                 if (audio_stream_.size() < audio_cadence_.front() * format_desc_.audio_channels)
 248                         CASPAR_THROW_EXCEPTION(out_of_range());
 249
 250                 auto begin = audio_stream_.begin();
 251                 auto end   = begin + audio_cadence_.front() * format_desc_.audio_channels;
 252
 253                 core::audio_buffer samples(begin, end);
 254                 audio_stream_.erase(begin, end);
 255
 256                 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);
 257
 258                 return samples;
 259         }
 260
 261         void update_display_mode(const std::shared_ptr<AVFrame>& frame)
 262         {
 263                 std::wstring filter_str = filter_str_;
 264
 265                 display_mode_ = display_mode::simple;
 266
 267                 auto mode = get_mode(*frame);
 268                 if(mode == core::field_mode::progressive && frame->height < 720 && in_fps_ < 50.0) // SD frames are interlaced. Probably incorrect meta-data. Fix it.
 269                         mode = core::field_mode::upper;
 270
 271                 auto fps  = in_fps_;
 272
 273                 if(filter::is_deinterlacing(filter_str_))
 274                         mode = core::field_mode::progressive;
 275
 276                 if(filter::is_double_rate(filter_str_))
 277                         fps *= 2;
 278
 279                 display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);
 280
 281                 if((frame->height != 480 || format_desc_.height != 486) && // don't deinterlace for NTSC DV
 282                                 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive &&
 283                                 frame->height != format_desc_.height)
 284                 {
 285                         display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace
 286                 }
 287
 288                 // ALWAYS de-interlace, until we have GPU de-interlacing.
 289                 if(force_deinterlacing_ && frame->interlaced_frame && display_mode_ != display_mode::deinterlace_bob && display_mode_ != display_mode::deinterlace)
 290                         display_mode_ = display_mode::deinterlace_bob_reinterlace;
 291
 292                 if(display_mode_ == display_mode::deinterlace)
 293                         filter_str = append_filter(filter_str, L"YADIF=0:-1");
 294                 else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)
 295                         filter_str = append_filter(filter_str, L"YADIF=1:-1");
 296
 297                 if(display_mode_ == display_mode::invalid)
 298                 {
 299                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";
 300                         display_mode_ = display_mode::simple;
 301                 }
 302
 303                 if(frame->height == 480) // NTSC DV
 304                 {
 305                         auto pad_str = L"PAD=" + boost::lexical_cast<std::wstring>(frame->width) + L":486:0:2:black";
 306                         filter_str = append_filter(filter_str, pad_str);
 307                 }
 308
 309                 filter_.reset (new filter(
 310                         frame->width,
 311                         frame->height,
 312                         boost::rational<int>(1000000, static_cast<int>(in_fps_ * 1000000)),
 313                         boost::rational<int>(static_cast<int>(in_fps_ * 1000000), 1000000),
 314                         boost::rational<int>(frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den),
 315                         static_cast<AVPixelFormat>(frame->format),
 316                         std::vector<AVPixelFormat>(),
 317                         u8(filter_str)));
 318
 319                 CASPAR_LOG(info) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);
 320         }
 321
 322         uint32_t calc_nb_frames(uint32_t nb_frames) const
 323         {
 324                 uint64_t nb_frames2 = nb_frames;
 325
 326                 if(filter_ && filter_->is_double_rate()) // Take into account transformations in filter.
 327                         nb_frames2 *= 2;
 328
 329                 switch(display_mode_) // Take into account transformation in run.
 330                 {
 331                 case display_mode::deinterlace_bob_reinterlace:
 332                 case display_mode::interlace:
 333                 case display_mode::half:
 334                         nb_frames2 /= 2;
 335                         break;
 336                 case display_mode::duplicate:
 337                         nb_frames2 *= 2;
 338                         break;
 339                 }
 340
 341                 return static_cast<uint32_t>(nb_frames2);
 342         }
 343
 344         void clear()
 345         {
 346                 while(!video_stream_.empty())
 347                         video_stream_.pop();
 348
 349                 audio_stream_.clear();
 350
 351                 while(!frame_buffer_.empty())
 352                         frame_buffer_.pop();
 353
 354                 filter_.reset();
 355         }
 356 };
 357
 358 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)
 359         : impl_(new impl(in_fps, frame_factory, format_desc, filter)){}
 360 void frame_muxer::push_video(const std::shared_ptr<AVFrame>& frame){impl_->push_video(frame);}
 361 void frame_muxer::push_audio(const std::shared_ptr<AVFrame>& frame){impl_->push_audio(frame);}
 362 bool frame_muxer::empty() const{return impl_->empty();}
 363 core::draw_frame frame_muxer::front() const{return impl_->front();}
 364 void frame_muxer::pop(){return impl_->pop();}
 365 void frame_muxer::clear(){impl_->clear();}
 366 uint32_t frame_muxer::calc_nb_frames(uint32_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}
 367 bool frame_muxer::video_ready() const{return impl_->video_ready();}
 368 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}
 369
 370 }}