2 * Copyright (c) 2011 Sveriges Television AB <info@casparcg.com>
4 * This file is part of CasparCG (www.casparcg.com).
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.
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.
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/>.
19 * Author: Robert Nagy, ronag89@gmail.com
22 #include "../../StdAfx.h"
24 #include "frame_muxer.h"
26 #include "../filter/filter.h"
27 #include "../util/util.h"
28 #include "../../ffmpeg.h"
30 #include <core/producer/frame_producer.h>
31 #include <core/frame/draw_frame.h>
32 #include <core/frame/frame_transform.h>
33 #include <core/frame/pixel_format.h>
34 #include <core/frame/frame_factory.h>
35 #include <core/frame/frame.h>
36 #include <core/frame/audio_channel_layout.h>
38 #include <common/env.h>
39 #include <common/except.h>
40 #include <common/log.h>
43 #pragma warning (push)
44 #pragma warning (disable : 4244)
48 #define __STDC_CONSTANT_MACROS
49 #define __STDC_LIMIT_MACROS
50 #include <libavcodec/avcodec.h>
51 #include <libavformat/avformat.h>
57 #include <common/assert.h>
58 #include <boost/range/algorithm_ext/push_back.hpp>
59 #include <boost/algorithm/string/predicate.hpp>
65 using namespace caspar::core;
67 namespace caspar { namespace ffmpeg {
69 bool is_frame_format_changed(const AVFrame& lhs, const AVFrame& rhs)
71 if (lhs.format != rhs.format)
74 for (int i = 0; i < AV_NUM_DATA_POINTERS; ++i)
76 if (lhs.linesize[i] != rhs.linesize[i])
83 struct frame_muxer::impl : boost::noncopyable
85 std::queue<core::mutable_frame> video_stream_;
86 core::mutable_audio_buffer audio_stream_;
87 std::queue<draw_frame> frame_buffer_;
88 display_mode display_mode_ = display_mode::invalid;
90 const video_format_desc format_desc_;
91 audio_channel_layout channel_layout_;
93 std::vector<int> audio_cadence_ = format_desc_.audio_cadence;
95 spl::shared_ptr<core::frame_factory> frame_factory_;
96 std::shared_ptr<AVFrame> previous_frame_;
98 std::unique_ptr<filter> filter_;
99 const std::wstring filter_str_;
100 bool force_deinterlacing_ = env::properties().get(L"configuration.force-deinterlace", true);
104 const spl::shared_ptr<core::frame_factory>& frame_factory,
105 const core::video_format_desc& format_desc,
106 const core::audio_channel_layout& channel_layout,
107 const std::wstring& filter_str)
109 , format_desc_(format_desc)
110 , channel_layout_(channel_layout)
111 , frame_factory_(frame_factory)
112 , filter_str_(filter_str)
114 // Note: Uses 1 step rotated cadence for 1001 modes (1602, 1602, 1601, 1602, 1601)
115 // This cadence fills the audio mixer most optimally.
116 boost::range::rotate(audio_cadence_, std::end(audio_cadence_)-1);
119 void push_video(const std::shared_ptr<AVFrame>& video)
124 if (previous_frame_ && video->data[0] && is_frame_format_changed(*previous_frame_, *video))
126 // Fixes bug where avfilter crashes server on some DV files (starts in YUV420p but changes to YUV411p after the first frame).
127 if (ffmpeg::is_logging_quiet_for_thread())
128 CASPAR_LOG(debug) << L"[frame_muxer] Frame format has changed. Resetting display mode.";
130 CASPAR_LOG(info) << L"[frame_muxer] Frame format has changed. Resetting display mode.";
132 display_mode_ = display_mode::invalid;
137 auto empty_frame = frame_factory_->create_frame(this, core::pixel_format_desc(core::pixel_format::invalid), channel_layout_);
138 video_stream_.push(std::move(empty_frame));
139 display_mode_ = display_mode::simple;
143 if(!filter_ || display_mode_ == display_mode::invalid)
144 update_display_mode(video);
146 filter_->push(video);
147 previous_frame_ = video;
148 for (auto& av_frame : filter_->poll_all())
149 video_stream_.push(make_frame(this, av_frame, *frame_factory_, channel_layout_));
155 void push_audio(const std::shared_ptr<AVFrame>& audio)
162 if (channel_layout_ == core::audio_channel_layout::invalid())
163 channel_layout_ = *core::audio_channel_layout_repository::get_default()->get_layout(L"stereo");
165 boost::range::push_back(audio_stream_, core::mutable_audio_buffer(audio_cadence_.front() * channel_layout_.num_channels, 0));
169 auto ptr = reinterpret_cast<int32_t*>(audio->data[0]);
170 audio_stream_.insert(audio_stream_.end(), ptr, ptr + audio->linesize[0]/sizeof(int32_t));
176 bool video_ready() const
178 switch(display_mode_)
180 case display_mode::deinterlace_bob_reinterlace:
181 case display_mode::interlace:
182 case display_mode::half:
183 return video_stream_.size() >= 2;
185 return video_stream_.size() >= 1;
189 bool audio_ready() const
191 switch(display_mode_)
193 case display_mode::duplicate:
194 return audio_stream_.size() >= static_cast<size_t>(audio_cadence_[0] + audio_cadence_[1 % audio_cadence_.size()]) * channel_layout_.num_channels;
196 return audio_stream_.size() >= static_cast<size_t>(audio_cadence_.front()) * channel_layout_.num_channels;
202 return frame_buffer_.empty();
205 core::draw_frame front() const
207 return frame_buffer_.front();
217 while(video_ready() && audio_ready() && display_mode_ != display_mode::invalid)
219 auto frame1 = pop_video();
220 frame1.audio_data() = pop_audio();
222 switch(display_mode_)
224 case display_mode::simple:
225 case display_mode::deinterlace_bob:
226 case display_mode::deinterlace:
228 frame_buffer_.push(core::draw_frame(std::move(frame1)));
231 case display_mode::interlace:
232 case display_mode::deinterlace_bob_reinterlace:
234 auto frame2 = pop_video();
236 frame_buffer_.push(core::draw_frame::interlace(
237 core::draw_frame(std::move(frame1)),
238 core::draw_frame(std::move(frame2)),
239 format_desc_.field_mode));
242 case display_mode::duplicate:
244 //boost::range::push_back(frame1.audio_data(), pop_audio());
246 auto second_audio_frame = core::mutable_frame(
247 std::vector<array<std::uint8_t>>(),
250 core::pixel_format_desc(),
252 auto first_frame = core::draw_frame(std::move(frame1));
253 auto muted_first_frame = core::draw_frame(first_frame);
254 muted_first_frame.transform().audio_transform.volume = 0;
255 auto second_frame = core::draw_frame({ core::draw_frame(std::move(second_audio_frame)), muted_first_frame });
257 // Same video but different audio.
258 frame_buffer_.push(first_frame);
259 frame_buffer_.push(second_frame);
262 case display_mode::half:
264 pop_video(); // Throw away
266 frame_buffer_.push(core::draw_frame(std::move(frame1)));
270 CASPAR_THROW_EXCEPTION(invalid_operation());
275 core::mutable_frame pop_video()
277 auto frame = std::move(video_stream_.front());
279 return std::move(frame);
282 core::mutable_audio_buffer pop_audio()
284 if (audio_stream_.size() < audio_cadence_.front() * channel_layout_.num_channels)
285 CASPAR_THROW_EXCEPTION(out_of_range());
287 auto begin = audio_stream_.begin();
288 auto end = begin + audio_cadence_.front() * channel_layout_.num_channels;
290 core::mutable_audio_buffer samples(begin, end);
291 audio_stream_.erase(begin, end);
293 boost::range::rotate(audio_cadence_, std::begin(audio_cadence_)+1);
298 void update_display_mode(const std::shared_ptr<AVFrame>& frame)
300 std::wstring filter_str = filter_str_;
302 display_mode_ = display_mode::simple;
304 auto mode = get_mode(*frame);
305 if(mode == core::field_mode::progressive && frame->height < 720 && in_fps_ < 50.0) // SD frames are interlaced. Probably incorrect meta-data. Fix it.
306 mode = core::field_mode::upper;
310 if(filter::is_deinterlacing(filter_str_))
311 mode = core::field_mode::progressive;
313 if(filter::is_double_rate(filter_str_))
316 display_mode_ = get_display_mode(mode, fps, format_desc_.field_mode, format_desc_.fps);
318 if((frame->height != 480 || format_desc_.height != 486) && // don't deinterlace for NTSC DV
319 display_mode_ == display_mode::simple && mode != core::field_mode::progressive && format_desc_.field_mode != core::field_mode::progressive &&
320 frame->height != format_desc_.height)
322 display_mode_ = display_mode::deinterlace_bob_reinterlace; // The frame will most likely be scaled, we need to deinterlace->reinterlace
325 // ALWAYS de-interlace, until we have GPU de-interlacing.
326 if(force_deinterlacing_ && frame->interlaced_frame && display_mode_ != display_mode::deinterlace_bob && display_mode_ != display_mode::deinterlace)
327 display_mode_ = display_mode::deinterlace_bob_reinterlace;
329 if(display_mode_ == display_mode::deinterlace)
330 filter_str = append_filter(filter_str, L"YADIF=0:-1");
331 else if(display_mode_ == display_mode::deinterlace_bob || display_mode_ == display_mode::deinterlace_bob_reinterlace)
332 filter_str = append_filter(filter_str, L"YADIF=1:-1");
334 if(display_mode_ == display_mode::invalid)
336 if (ffmpeg::is_logging_quiet_for_thread())
337 CASPAR_LOG(debug) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";
339 CASPAR_LOG(warning) << L"[frame_muxer] Auto-transcode: Failed to detect display-mode.";
341 display_mode_ = display_mode::simple;
344 if(frame->height == 480) // NTSC DV
346 auto pad_str = L"PAD=" + boost::lexical_cast<std::wstring>(frame->width) + L":486:0:2:black";
347 filter_str = append_filter(filter_str, pad_str);
350 filter_.reset (new filter(
353 boost::rational<int>(1000000, static_cast<int>(in_fps_ * 1000000)),
354 boost::rational<int>(static_cast<int>(in_fps_ * 1000000), 1000000),
355 boost::rational<int>(frame->sample_aspect_ratio.num, frame->sample_aspect_ratio.den),
356 static_cast<AVPixelFormat>(frame->format),
357 std::vector<AVPixelFormat>(),
360 if (ffmpeg::is_logging_quiet_for_thread())
361 CASPAR_LOG(debug) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);
363 CASPAR_LOG(info) << L"[frame_muxer] " << display_mode_ << L" " << print_mode(frame->width, frame->height, in_fps_, frame->interlaced_frame > 0);
366 uint32_t calc_nb_frames(uint32_t nb_frames) const
368 uint64_t nb_frames2 = nb_frames;
370 if(filter_ && filter_->is_double_rate()) // Take into account transformations in filter.
373 switch(display_mode_) // Take into account transformation in run.
375 case display_mode::deinterlace_bob_reinterlace:
376 case display_mode::interlace:
377 case display_mode::half:
380 case display_mode::duplicate:
385 return static_cast<uint32_t>(nb_frames2);
390 while(!video_stream_.empty())
393 audio_stream_.clear();
395 while(!frame_buffer_.empty())
402 frame_muxer::frame_muxer(
404 const spl::shared_ptr<core::frame_factory>& frame_factory,
405 const core::video_format_desc& format_desc,
406 const core::audio_channel_layout& channel_layout,
407 const std::wstring& filter)
408 : impl_(new impl(in_fps, frame_factory, format_desc, channel_layout, filter)){}
409 void frame_muxer::push_video(const std::shared_ptr<AVFrame>& frame){impl_->push_video(frame);}
410 void frame_muxer::push_audio(const std::shared_ptr<AVFrame>& frame){impl_->push_audio(frame);}
411 bool frame_muxer::empty() const{return impl_->empty();}
412 core::draw_frame frame_muxer::front() const{return impl_->front();}
413 void frame_muxer::pop(){return impl_->pop();}
414 void frame_muxer::clear(){impl_->clear();}
415 uint32_t frame_muxer::calc_nb_frames(uint32_t nb_frames) const {return impl_->calc_nb_frames(nb_frames);}
416 bool frame_muxer::video_ready() const{return impl_->video_ready();}
417 bool frame_muxer::audio_ready() const{return impl_->audio_ready();}