1 #include "../../StdAfx.h"
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3 #include "frame_muxer.h"
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5 #include "display_mode.h"
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7 #include "../filter/filter.h"
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8 #include "../util/util.h"
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10 #include <core/producer/frame_producer.h>
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11 #include <core/producer/frame/basic_frame.h>
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12 #include <core/producer/frame/frame_transform.h>
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13 #include <core/producer/frame/pixel_format.h>
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14 #include <core/producer/frame/frame_factory.h>
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15 #include <core/mixer/write_frame.h>
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17 #include <common/env.h>
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18 #include <common/exception/exceptions.h>
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19 #include <common/log/log.h>
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21 #if defined(_MSC_VER)
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22 #pragma warning (push)
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23 #pragma warning (disable : 4244)
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27 #define __STDC_CONSTANT_MACROS
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28 #define __STDC_LIMIT_MACROS
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29 #include <libavcodec/avcodec.h>
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30 #include <libavformat/avformat.h>
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32 #if defined(_MSC_VER)
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33 #pragma warning (pop)
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36 #include <boost/foreach.hpp>
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37 #include <boost/range/algorithm_ext/push_back.hpp>
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43 using namespace caspar::core;
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45 namespace caspar { namespace ffmpeg {
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47 struct frame_muxer::implementation : boost::noncopyable
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49 std::queue<std::queue<safe_ptr<write_frame>>> video_streams_;
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50 std::queue<core::audio_buffer> audio_streams_;
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51 std::queue<safe_ptr<basic_frame>> frame_buffer_;
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52 display_mode::type display_mode_;
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53 const double in_fps_;
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54 const video_format_desc format_desc_;
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55 bool auto_transcode_;
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57 std::vector<size_t> audio_cadence_;
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59 size_t audio_sample_count_;
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60 size_t video_frame_count_;
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62 safe_ptr<core::frame_factory> frame_factory_;
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65 std::wstring filter_str_;
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67 implementation(double in_fps, const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filter_str)
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68 : display_mode_(display_mode::invalid)
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70 , format_desc_(frame_factory->get_video_format_desc())
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71 , auto_transcode_(env::properties().get("configuration.auto-transcode", true))
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72 , audio_cadence_(format_desc_.audio_cadence)
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73 , audio_sample_count_(0)
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74 , video_frame_count_(0)
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75 , frame_factory_(frame_factory)
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76 , filter_str_(filter_str)
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78 video_streams_.push(std::queue<safe_ptr<write_frame>>());
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79 audio_streams_.push(core::audio_buffer());
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80 boost::range::sort(audio_cadence_);
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81 boost::range::reverse(audio_cadence_);
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84 void push(const std::shared_ptr<AVFrame>& video_frame, int hints)
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89 if(video_frame == flush_video())
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91 video_frame_count_ = 0;
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92 video_streams_.push(std::queue<safe_ptr<write_frame>>());
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94 else if(video_frame == empty_video())
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96 video_streams_.back().push(make_safe<core::write_frame>(this));
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97 ++video_frame_count_;
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98 display_mode_ = display_mode::simple;
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102 if(display_mode_ == display_mode::invalid)
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103 initialize_display_mode(*video_frame);
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105 if(hints & core::frame_producer::ALPHA_HINT)
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106 video_frame->format = make_alpha_format(video_frame->format);
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108 auto format = video_frame->format;
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109 if(video_frame->format == CASPAR_PIX_FMT_LUMA) // CASPAR_PIX_FMT_LUMA is not valid for filter, change it to GRAY8
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110 video_frame->format = PIX_FMT_GRAY8;
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112 filter_.push(video_frame);
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113 BOOST_FOREACH(auto& av_frame, filter_.poll_all())
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115 if(video_frame->format == PIX_FMT_GRAY8 && format == CASPAR_PIX_FMT_LUMA)
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116 av_frame->format = format;
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118 video_streams_.back().push(make_write_frame(this, av_frame, frame_factory_, hints));
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119 ++video_frame_count_;
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123 if(video_streams_.back().size() > 32)
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124 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."));
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127 void push(const std::shared_ptr<core::audio_buffer>& audio)
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132 if(audio == flush_audio())
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134 audio_sample_count_ = 0;
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135 audio_streams_.push(core::audio_buffer());
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137 else if(audio == empty_audio())
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139 boost::range::push_back(audio_streams_.back(), core::audio_buffer(audio_cadence_.front(), 0));
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140 audio_sample_count_ += audio->size();
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144 boost::range::push_back(audio_streams_.back(), *audio);
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145 audio_sample_count_ += audio->size();
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148 if(audio_streams_.back().size() > 32*audio_cadence_.front())
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149 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."));
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152 bool video_ready() const
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154 return video_streams_.size() > 1 || (video_streams_.size() >= audio_streams_.size() && video_ready2());
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157 bool audio_ready() const
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159 return audio_streams_.size() > 1 || (audio_streams_.size() >= video_streams_.size() && audio_ready2());
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162 bool video_ready2() const
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164 switch(display_mode_)
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166 case display_mode::deinterlace_bob_reinterlace:
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167 case display_mode::interlace:
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168 case display_mode::half:
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169 return video_streams_.front().size() >= 2;
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171 return video_streams_.front().size() >= 1;
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175 bool audio_ready2() const
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177 switch(display_mode_)
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179 case display_mode::duplicate:
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180 return audio_streams_.front().size()/2 >= audio_cadence_.front();
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182 return audio_streams_.front().size() >= audio_cadence_.front();
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186 std::shared_ptr<basic_frame> poll()
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188 if(!frame_buffer_.empty())
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190 auto frame = frame_buffer_.front();
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191 frame_buffer_.pop();
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195 if(video_streams_.size() > 1 && audio_streams_.size() > 1 && (!video_ready2() || !audio_ready2()))
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197 if(!video_streams_.front().empty() || !audio_streams_.front().empty())
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198 CASPAR_LOG(debug) << "Truncating: " << video_streams_.front().size() << L" video-frames, " << audio_streams_.front().size() << L" audio-samples.";
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200 video_streams_.pop();
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201 audio_streams_.pop();
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204 if(!video_ready2() || !audio_ready2())
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207 auto frame1 = pop_video();
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208 frame1->audio_data() = pop_audio();
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210 switch(display_mode_)
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212 case display_mode::simple:
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213 case display_mode::deinterlace_bob:
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214 case display_mode::deinterlace:
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216 frame_buffer_.push(frame1);
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219 case display_mode::interlace:
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220 case display_mode::deinterlace_bob_reinterlace:
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222 auto frame2 = pop_video();
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224 frame_buffer_.push(core::basic_frame::interlace(frame1, frame2, format_desc_.field_mode));
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227 case display_mode::duplicate:
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229 auto frame2 = make_safe<core::write_frame>(*frame1);
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230 frame2->audio_data() = pop_audio();
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232 frame_buffer_.push(frame1);
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233 frame_buffer_.push(frame2);
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236 case display_mode::half:
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238 pop_video(); // Throw away
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240 frame_buffer_.push(frame1);
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244 BOOST_THROW_EXCEPTION(invalid_operation() << msg_info("invalid display-mode"));
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247 return frame_buffer_.empty() ? nullptr : poll();
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250 safe_ptr<core::write_frame> pop_video()
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252 auto frame = video_streams_.front().front();
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253 video_streams_.front().pop();
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257 core::audio_buffer pop_audio()
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259 CASPAR_VERIFY(audio_streams_.front().size() >= audio_cadence_.front());
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261 auto begin = audio_streams_.front().begin();
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262 auto end = begin + audio_cadence_.front();
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264 core::audio_buffer samples(begin, end);
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265 audio_streams_.front().erase(begin, end);
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267 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);
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272 void initialize_display_mode(const AVFrame& frame)
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274 display_mode_ = display_mode::simple;
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275 if(auto_transcode_)
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277 auto mode = get_mode(frame);
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278 auto fps = in_fps_;
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280 if(is_deinterlacing(filter_str_))
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281 mode = core::field_mode::progressive;
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283 if(is_double_rate(filter_str_))
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286 display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);
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288 if((frame.height != 480 || format_desc_.height != 486) &&
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289 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive &&
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290 frame.height != static_cast<int>(format_desc_.height))
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292 display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace
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295 if(display_mode_ == display_mode::deinterlace)
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296 filter_str_ = append_filter(filter_str_, L"YADIF=0:-1");
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297 else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)
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298 filter_str_ = append_filter(filter_str_, L"YADIF=1:-1");
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301 if(display_mode_ == display_mode::invalid)
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303 CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";
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304 display_mode_ = display_mode::simple;
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307 filter_ = filter(filter_str_);
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309 CASPAR_LOG(info) << "[frame_muxer] " << display_mode::print(display_mode_)
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310 << L" " << frame.width << L"x" << frame.height
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311 << (frame.interlaced_frame ? L"i" : L"p")
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312 << (frame.interlaced_frame ? in_fps_*2 : in_fps_);
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315 int64_t calc_nb_frames(int64_t nb_frames) const
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317 switch(display_mode_) // Take into account transformation in run.
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319 case display_mode::deinterlace_bob_reinterlace:
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320 case display_mode::interlace:
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321 case display_mode::half:
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324 case display_mode::duplicate:
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329 if(is_double_rate(widen(filter_.filter_str()))) // Take into account transformations in filter.
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336 frame_muxer::frame_muxer(double in_fps, const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filter)
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337 : impl_(new implementation(in_fps, frame_factory, filter)){}
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338 void frame_muxer::push(const std::shared_ptr<AVFrame>& video_frame, int hints){impl_->push(video_frame, hints);}
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339 void frame_muxer::push(const std::shared_ptr<core::audio_buffer>& audio_samples){return impl_->push(audio_samples);}
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340 std::shared_ptr<basic_frame> frame_muxer::poll(){return impl_->poll();}
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341 int64_t frame_muxer::calc_nb_frames(int64_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}
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342 bool frame_muxer::video_ready() const{return impl_->video_ready();}
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343 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}
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