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_                   = display_mode::invalid;
  73         const double                                                                    in_fps_;
  74         const video_format_desc                                                 format_desc_;
  75
  76         std::vector<int>                                                                audio_cadence_                  = format_desc_.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_    = env::properties().get(L"configuration.force-deinterlace", true);
  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                 : in_fps_(in_fps)
  86                 , format_desc_(format_desc)
  87                 , frame_factory_(frame_factory)
  88                 , filter_str_(filter_str)
  89         {
  90                 // Note: Uses 1 step rotated cadence for 1001 modes (1602, 1602, 1601, 1602, 1601)
  91                 // This cadence fills the audio mixer most optimally.
  92                 boost::range::rotate(audio_cadence_, std::end(audio_cadence_)-1);
  93         }
  94
  95         void push_video(const std::shared_ptr<AVFrame>& video)
  96         {
  97                 if(!video)
  98                         return;
  99
 100                 if(!video->data[0])
 101                 {
 102                         auto empty_frame = frame_factory_->create_frame(this, core::pixel_format_desc(core::pixel_format::invalid));
 103                         video_stream_.push(std::move(empty_frame));
 104                         display_mode_ = display_mode::simple;
 105                 }
 106                 else
 107                 {
 108                         if(!filter_ || display_mode_ == display_mode::invalid)
 109                                 update_display_mode(video);
 110
 111                         filter_->push(video);
 112                         for (auto& av_frame : filter_->poll_all())
 113                                 video_stream_.push(make_frame(this, av_frame, format_desc_.fps, *frame_factory_));
 114                 }
 115
 116                 merge();
 117         }
 118
 119         void push_audio(const std::shared_ptr<AVFrame>& audio)
 120         {
 121                 if(!audio)
 122                         return;
 123
 124                 if(!audio->data[0])
 125                 {
 126                         boost::range::push_back(audio_stream_, core::audio_buffer(audio_cadence_.front() * format_desc_.audio_channels, 0));
 127                 }
 128                 else
 129                 {
 130                         auto ptr = reinterpret_cast<int32_t*>(audio->data[0]);
 131                         audio_stream_.insert(audio_stream_.end(), ptr, ptr + audio->linesize[0]/sizeof(int32_t));
 132                 }
 133
 134                 merge();
 135         }
 136
 137         bool video_ready() const
 138         {
 139                 switch(display_mode_)
 140                 {
 141                 case display_mode::deinterlace_bob_reinterlace:
 142                 case display_mode::interlace:
 143                 case display_mode::half:
 144                         return video_stream_.size() >= 2;
 145                 default:
 146                         return video_stream_.size() >= 1;
 147                 }
 148         }
 149
 150         bool audio_ready() const
 151         {
 152                 switch(display_mode_)
 153                 {
 154                 case display_mode::duplicate:
 155                         return audio_stream_.size() >= static_cast<size_t>(audio_cadence_[0] + audio_cadence_[1 % audio_cadence_.size()]) * format_desc_.audio_channels;
 156                 default:
 157                         return audio_stream_.size() >= static_cast<size_t>(audio_cadence_.front()) * format_desc_.audio_channels;
 158                 }
 159         }
 160
 161         bool empty() const
 162         {
 163                 return frame_buffer_.empty();
 164         }
 165
 166         core::draw_frame front() const
 167         {
 168                 return frame_buffer_.front();
 169         }
 170
 171         void pop()
 172         {
 173                 frame_buffer_.pop();
 174         }
 175
 176         void merge()
 177         {
 178                 while(video_ready() && audio_ready() && display_mode_ != display_mode::invalid)
 179                 {
 180                         auto frame1                     = pop_video();
 181                         frame1.audio_data()     = pop_audio();
 182
 183                         switch(display_mode_)
 184                         {
 185                         case display_mode::simple:
 186                         case display_mode::deinterlace_bob:
 187                         case display_mode::deinterlace:
 188                                 {
 189                                         frame_buffer_.push(core::draw_frame(std::move(frame1)));
 190                                         break;
 191                                 }
 192                         case display_mode::interlace:
 193                         case display_mode::deinterlace_bob_reinterlace:
 194                                 {
 195                                         auto frame2 = pop_video();
 196
 197                                         frame_buffer_.push(core::draw_frame::interlace(
 198                                                 core::draw_frame(std::move(frame1)),
 199                                                 core::draw_frame(std::move(frame2)),
 200                                                 format_desc_.field_mode));
 201                                         break;
 202                                 }
 203                         case display_mode::duplicate:
 204                                 {
 205                                         //boost::range::push_back(frame1.audio_data(), pop_audio());
 206
 207                                         auto second_audio_frame = core::mutable_frame(
 208                                                         std::vector<array<std::uint8_t>>(),
 209                                                         pop_audio(),
 210                                                         frame1.data_tag(),
 211                                                         core::pixel_format_desc());
 212                                         auto first_frame = core::draw_frame(std::move(frame1));
 213                                         auto muted_first_frame = core::draw_frame(first_frame);
 214                                         muted_first_frame.transform().audio_transform.volume = 0;
 215                                         auto second_frame = core::draw_frame({ core::draw_frame(std::move(second_audio_frame)), muted_first_frame });
 216
 217                                         // Same video but different audio.
 218                                         frame_buffer_.push(first_frame);
 219                                         frame_buffer_.push(second_frame);
 220                                         break;
 221                                 }
 222                         case display_mode::half:
 223                                 {
 224                                         pop_video(); // Throw away
 225
 226                                         frame_buffer_.push(core::draw_frame(std::move(frame1)));
 227                                         break;
 228                                 }
 229                         default:
 230                                 CASPAR_THROW_EXCEPTION(invalid_operation());
 231                         }
 232                 }
 233         }
 234
 235         core::mutable_frame pop_video()
 236         {
 237                 auto frame = std::move(video_stream_.front());
 238                 video_stream_.pop();
 239                 return std::move(frame);
 240         }
 241
 242         core::audio_buffer pop_audio()
 243         {
 244                 if (audio_stream_.size() < audio_cadence_.front() * format_desc_.audio_channels)
 245                         CASPAR_THROW_EXCEPTION(out_of_range());
 246
 247                 auto begin = audio_stream_.begin();
 248                 auto end   = begin + audio_cadence_.front() * format_desc_.audio_channels;
 249
 250                 core::audio_buffer samples(begin, end);
 251                 audio_stream_.erase(begin, end);
 252
 253                 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);
 254
 255                 return samples;
 256         }
 257
 258         void update_display_mode(const std::shared_ptr<AVFrame>& frame)
 259         {
 260                 std::wstring filter_str = filter_str_;
 261
 262                 display_mode_ = display_mode::simple;
 263
 264                 auto mode = get_mode(*frame);
 265                 if(mode == core::field_mode::progressive && frame->height < 720 && in_fps_ < 50.0) // SD frames are interlaced. Probably incorrect meta-data. Fix it.
 266                         mode = core::field_mode::upper;
 267
 268                 auto fps  = in_fps_;
 269
 270                 if(filter::is_deinterlacing(filter_str_))
 271                         mode = core::field_mode::progressive;
 272
 273                 if(filter::is_double_rate(filter_str_))
 274                         fps *= 2;
 275
 276                 display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);
 277
 278                 if((frame->height != 480 || format_desc_.height != 486) && // don't deinterlace for NTSC DV
 279                                 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive &&
 280                                 frame->height != format_desc_.height)
 281                 {
 282                         display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace
 283                 }
 284
 285                 // ALWAYS de-interlace, until we have GPU de-interlacing.
 286                 if(force_deinterlacing_ && frame->interlaced_frame && display_mode_ != display_mode::deinterlace_bob && display_mode_ != display_mode::deinterlace)
 287                         display_mode_ = display_mode::deinterlace_bob_reinterlace;
 288
 289                 if(display_mode_ == display_mode::deinterlace)
 290                         filter_str = append_filter(filter_str, L"YADIF=0:-1");
 291                 else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)
 292                         filter_str = append_filter(filter_str, L"YADIF=1:-1");
 293
 294                 if(display_mode_ == display_mode::invalid)
 295                 {
 296                         CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";
 297                         display_mode_ = display_mode::simple;
 298                 }
 299
 300                 if(frame->height == 480) // NTSC DV
 301                 {
 302                         auto pad_str = L"PAD=" + boost::lexical_cast<std::wstring>(frame->width) + L":486:0:2:black";
 303                         filter_str = append_filter(filter_str, pad_str);
 304                 }
 305
 306                 filter_.reset (new filter(
 307                         frame->width,
 308                         frame->height,
 309                         boost::rational<int>(1000000, static_cast<int>(in_fps_ * 1000000)),
 310                         boost::rational<int>(static_cast<int>(in_fps_ * 1000000), 1000000),
 311                         boost::rational<int>(frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den),
 312                         static_cast<AVPixelFormat>(frame->format),
 313                         std::vector<AVPixelFormat>(),
 314                         u8(filter_str)));
 315
 316                 CASPAR_LOG(info) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);
 317         }
 318
 319         uint32_t calc_nb_frames(uint32_t nb_frames) const
 320         {
 321                 uint64_t nb_frames2 = nb_frames;
 322
 323                 if(filter_ && filter_->is_double_rate()) // Take into account transformations in filter.
 324                         nb_frames2 *= 2;
 325
 326                 switch(display_mode_) // Take into account transformation in run.
 327                 {
 328                 case display_mode::deinterlace_bob_reinterlace:
 329                 case display_mode::interlace:
 330                 case display_mode::half:
 331                         nb_frames2 /= 2;
 332                         break;
 333                 case display_mode::duplicate:
 334                         nb_frames2 *= 2;
 335                         break;
 336                 }
 337
 338                 return static_cast<uint32_t>(nb_frames2);
 339         }
 340
 341         void clear()
 342         {
 343                 while(!video_stream_.empty())
 344                         video_stream_.pop();
 345
 346                 audio_stream_.clear();
 347
 348                 while(!frame_buffer_.empty())
 349                         frame_buffer_.pop();
 350
 351                 filter_.reset();
 352         }
 353 };
 354
 355 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)
 356         : impl_(new impl(in_fps, frame_factory, format_desc, filter)){}
 357 void frame_muxer::push_video(const std::shared_ptr<AVFrame>& frame){impl_->push_video(frame);}
 358 void frame_muxer::push_audio(const std::shared_ptr<AVFrame>& frame){impl_->push_audio(frame);}
 359 bool frame_muxer::empty() const{return impl_->empty();}
 360 core::draw_frame frame_muxer::front() const{return impl_->front();}
 361 void frame_muxer::pop(){return impl_->pop();}
 362 void frame_muxer::clear(){impl_->clear();}
 363 uint32_t frame_muxer::calc_nb_frames(uint32_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}
 364 bool frame_muxer::video_ready() const{return impl_->video_ready();}
 365 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}
 366
 367 }}