2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This file is part of CasparCG.
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6 * CasparCG is free software: you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation, either version 3 of the License, or
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9 * (at your option) any later version.
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11 * CasparCG is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
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20 #include "../stdafx.h"
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22 #include "ffmpeg_producer.h"
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24 #include "../ffmpeg_error.h"
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25 #include "muxer/frame_muxer.h"
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26 #include "input/input.h"
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27 #include "util/util.h"
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28 #include "audio/audio_decoder.h"
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29 #include "video/video_decoder.h"
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31 #include <common/env.h>
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32 #include <common/utility/assert.h>
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33 #include <common/diagnostics/graph.h>
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35 #include <core/video_format.h>
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36 #include <core/producer/frame_producer.h>
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37 #include <core/producer/frame/frame_factory.h>
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38 #include <core/producer/frame/basic_frame.h>
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39 #include <core/producer/frame/frame_transform.h>
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41 #include <boost/algorithm/string.hpp>
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42 #include <boost/assign.hpp>
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43 #include <boost/timer.hpp>
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44 #include <boost/foreach.hpp>
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45 #include <boost/filesystem.hpp>
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46 #include <boost/range/algorithm/find_if.hpp>
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47 #include <boost/range/algorithm/find.hpp>
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49 #include <tbb/parallel_invoke.h>
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55 namespace caspar { namespace ffmpeg {
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57 struct ffmpeg_producer : public core::frame_producer
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59 const std::wstring filename_;
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61 const safe_ptr<diagnostics::graph> graph_;
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62 boost::timer frame_timer_;
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63 boost::timer video_timer_;
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64 boost::timer audio_timer_;
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66 const safe_ptr<core::frame_factory> frame_factory_;
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67 const core::video_format_desc format_desc_;
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70 std::unique_ptr<video_decoder> video_decoder_;
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71 std::unique_ptr<audio_decoder> audio_decoder_;
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72 std::unique_ptr<frame_muxer> muxer_;
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76 const size_t length_;
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78 safe_ptr<core::basic_frame> last_frame_;
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80 std::queue<safe_ptr<core::basic_frame>> frame_buffer_;
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83 explicit ffmpeg_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::wstring& filename, const std::wstring& filter, bool loop, int start, size_t length)
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84 : filename_(filename)
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85 , frame_factory_(frame_factory)
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86 , format_desc_(frame_factory->get_video_format_desc())
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87 , input_(graph_, filename_, loop, start, length)
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91 , last_frame_(core::basic_frame::empty())
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93 graph_->add_guide("frame-time", 0.5);
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94 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
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95 graph_->set_color("underflow", diagnostics::color(0.6f, 0.3f, 0.9f));
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96 diagnostics::register_graph(graph_);
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100 video_decoder_.reset(new video_decoder(input_.context()));
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102 catch(averror_stream_not_found&)
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104 CASPAR_LOG(warning) << "No video-stream found. Running without video.";
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108 CASPAR_LOG_CURRENT_EXCEPTION();
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109 CASPAR_LOG(warning) << "Failed to open video-stream. Running without video.";
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114 audio_decoder_.reset(new audio_decoder(input_.context(), frame_factory->get_video_format_desc()));
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116 catch(averror_stream_not_found&)
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118 CASPAR_LOG(warning) << "No audio-stream found. Running without audio.";
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122 CASPAR_LOG_CURRENT_EXCEPTION();
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123 CASPAR_LOG(warning) << "Failed to open audio-stream. Running without audio.";
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126 muxer_.reset(new frame_muxer(video_decoder_ ? video_decoder_->fps() : frame_factory->get_video_format_desc().fps, frame_factory, filter));
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129 virtual safe_ptr<core::basic_frame> receive(int hints)
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131 frame_timer_.restart();
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133 for(int n = 0; n < 32 && frame_buffer_.size() < 2; ++n)
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134 try_decode_frame(hints);
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136 graph_->update_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);
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138 if(frame_buffer_.empty() && input_.eof())
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139 return core::basic_frame::eof();
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141 if(frame_buffer_.empty())
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143 graph_->add_tag("underflow");
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144 return core::basic_frame::late();
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147 last_frame_ = frame_buffer_.front();
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148 frame_buffer_.pop();
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150 graph_->set_text(print());
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152 return last_frame_;
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155 virtual safe_ptr<core::basic_frame> last_frame() const
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157 return disable_audio(last_frame_);
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160 void try_decode_frame(int hints)
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162 std::shared_ptr<AVPacket> pkt;
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164 for(int n = 0; n < 32 && ((video_decoder_ && !video_decoder_->ready()) || (audio_decoder_ && !audio_decoder_->ready())) && input_.try_pop(pkt); ++n)
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167 video_decoder_->push(pkt);
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169 audio_decoder_->push(pkt);
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172 std::shared_ptr<AVFrame> video;
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173 std::shared_ptr<core::audio_buffer> audio;
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175 tbb::parallel_invoke(
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178 if(!muxer_->video_ready() && video_decoder_)
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179 video = video_decoder_->poll();
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183 if(!muxer_->audio_ready() && audio_decoder_)
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184 audio = audio_decoder_->poll();
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187 muxer_->push(video, hints);
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188 muxer_->push(audio);
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190 if(!audio_decoder_)
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192 if(video == flush_video())
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193 muxer_->push(flush_audio());
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194 else if(!muxer_->audio_ready())
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195 muxer_->push(empty_audio());
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198 if(!video_decoder_)
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200 if(audio == flush_audio())
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201 muxer_->push(flush_video(), 0);
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202 else if(!muxer_->video_ready())
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203 muxer_->push(empty_video(), 0);
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206 for(auto frame = muxer_->poll(); frame; frame = muxer_->poll())
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207 frame_buffer_.push(make_safe_ptr(frame));
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210 virtual int64_t nb_frames() const
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213 return std::numeric_limits<int64_t>::max();
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215 // This function estimates nb_frames until input has read all packets for one loop, at which point the count should be accurate.
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217 int64_t nb_frames = input_.nb_frames();
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218 if(input_.nb_loops() < 1) // input still hasn't counted all frames
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220 auto video_nb_frames = video_decoder_ ? video_decoder_->nb_frames() : std::numeric_limits<int64_t>::max();
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221 auto audio_nb_frames = audio_decoder_ ? audio_decoder_->nb_frames() : std::numeric_limits<int64_t>::max();
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223 nb_frames = std::max(nb_frames, std::max(video_nb_frames, audio_nb_frames));
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226 nb_frames = std::min(static_cast<int64_t>(length_), nb_frames);
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228 nb_frames = muxer_->calc_nb_frames(nb_frames);
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230 // TODO: Might need to scale nb_frames av frame_muxer transformations.
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232 return nb_frames - start_;
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235 virtual std::wstring print() const
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239 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"|"
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240 + boost::lexical_cast<std::wstring>(video_decoder_->width()) + L"x" + boost::lexical_cast<std::wstring>(video_decoder_->height())
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241 + (video_decoder_->is_progressive() ? L"p" : L"i") + boost::lexical_cast<std::wstring>(video_decoder_->is_progressive() ? video_decoder_->fps() : 2.0 * video_decoder_->fps())
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245 return L"ffmpeg[" + boost::filesystem::wpath(filename_).filename() + L"]";
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249 safe_ptr<core::frame_producer> create_producer(const safe_ptr<core::frame_factory>& frame_factory, const std::vector<std::wstring>& params)
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251 static const std::vector<std::wstring> extensions = boost::assign::list_of
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252 (L"mpg")(L"mpeg")(L"m2v")(L"m4v")(L"mp3")(L"mp4")(L"mpga")
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260 (L"wmv")(L"wma")(L"wav")
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262 (L"ogg")(L"ogv")(L"oga")(L"ogx")
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263 (L"divx")(L"xvid");
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265 std::wstring filename = env::media_folder() + L"\\" + params[0];
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267 auto ext = boost::find_if(extensions, [&](const std::wstring& ex)
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269 return boost::filesystem::is_regular_file(boost::filesystem::wpath(filename + L"." + ex));
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272 if(ext == extensions.end())
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273 return core::frame_producer::empty();
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275 auto path = filename + L"." + *ext;
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276 auto loop = boost::range::find(params, L"LOOP") != params.end();
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277 auto start = core::get_param(L"SEEK", params, 0);
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278 auto length = core::get_param(L"LENGTH", params, std::numeric_limits<size_t>::max());
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279 auto filter_str = core::get_param<std::wstring>(L"FILTER", params, L"");
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281 boost::replace_all(filter_str, L"DEINTERLACE", L"YADIF=0:-1");
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282 boost::replace_all(filter_str, L"DEINTERLACE_BOB", L"YADIF=1:-1");
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284 return create_destroy_proxy(make_safe<ffmpeg_producer>(frame_factory, path, filter_str, loop, start, length));
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