2 * copyright (c) 2010 Sveriges Television AB <info@casparcg.com>
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4 * This ffmpeg 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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21 #include "../StdAfx.h"
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23 #include "../ffmpeg_error.h"
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25 #include "ffmpeg_consumer.h"
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27 #include <core/mixer/read_frame.h>
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28 #include <core/mixer/audio/audio_util.h>
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29 #include <core/consumer/frame_consumer.h>
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30 #include <core/video_format.h>
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32 #include <common/concurrency/executor.h>
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33 #include <common/diagnostics/graph.h>
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34 #include <common/utility/string.h>
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35 #include <common/env.h>
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37 #include <boost/timer.hpp>
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38 #include <boost/thread/once.hpp>
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39 #include <boost/thread.hpp>
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40 #include <boost/algorithm/string.hpp>
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42 #include <tbb/cache_aligned_allocator.h>
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43 #include <tbb/parallel_invoke.h>
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47 #if defined(_MSC_VER)
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48 #pragma warning (push)
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49 #pragma warning (disable : 4244)
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53 #define __STDC_CONSTANT_MACROS
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54 #define __STDC_LIMIT_MACROS
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55 #include <libavformat/avformat.h>
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56 #include <libswscale/swscale.h>
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57 #include <libavutil/opt.h>
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59 #if defined(_MSC_VER)
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60 #pragma warning (pop)
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63 namespace caspar { namespace ffmpeg {
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65 struct ffmpeg_consumer : boost::noncopyable
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67 const std::string filename_;
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69 const std::shared_ptr<AVFormatContext> oc_;
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70 const core::video_format_desc format_desc_;
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72 const safe_ptr<diagnostics::graph> graph_;
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73 boost::timer frame_timer_;
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74 boost::timer write_timer_;
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77 executor file_write_executor_;
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80 std::shared_ptr<AVStream> audio_st_;
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81 std::vector<uint8_t> audio_outbuf_;
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83 std::vector<int16_t> audio_input_buffer_;
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86 std::shared_ptr<AVStream> video_st_;
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87 std::vector<uint8_t> video_outbuf_;
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89 std::vector<uint8_t> picture_buf_;
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90 std::shared_ptr<SwsContext> img_convert_ctx_;
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92 int64_t frame_number_;
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95 ffmpeg_consumer(const std::string& filename, const core::video_format_desc& format_desc, const std::string& codec, const std::string& options)
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96 : filename_(filename + ".mov")
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97 , video_outbuf_(1920*1080*8)
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98 , audio_outbuf_(48000)
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99 , oc_(avformat_alloc_context(), av_free)
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100 , format_desc_(format_desc)
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101 , executor_(print())
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102 , file_write_executor_(print() + L"/output")
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105 graph_->add_guide("frame-time", 0.5);
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106 graph_->set_color("frame-time", diagnostics::color(0.1f, 1.0f, 0.1f));
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107 graph_->set_color("write-time", diagnostics::color(0.5f, 0.5f, 0.1f));
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108 graph_->set_text(print());
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109 diagnostics::register_graph(graph_);
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111 executor_.set_capacity(8);
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112 file_write_executor_.set_capacity(8);
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114 oc_->oformat = av_guess_format(nullptr, filename_.c_str(), nullptr);
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116 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Could not find suitable output format."));
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118 THROW_ON_ERROR2(av_set_parameters(oc_.get(), nullptr), "[ffmpeg_consumer]");
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120 strcpy_s(oc_->filename, filename_.c_str());
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122 auto video_codec = avcodec_find_encoder_by_name(codec.c_str());
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123 if(video_codec == nullptr)
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124 BOOST_THROW_EXCEPTION(invalid_argument() << arg_name_info(codec));
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126 // Add the audio and video streams using the default format codecs and initialize the codecs .
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127 video_st_ = add_video_stream(video_codec->id, options);
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128 audio_st_ = add_audio_stream();
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130 dump_format(oc_.get(), 0, filename_.c_str(), 1);
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132 // Open the output ffmpeg, if needed.
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133 if (!(oc_->oformat->flags & AVFMT_NOFILE))
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134 THROW_ON_ERROR2(avio_open(&oc_->pb, filename_.c_str(), URL_WRONLY), "[ffmpeg_consumer]");
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136 THROW_ON_ERROR2(av_write_header(oc_.get()), "[ffmpeg_consumer]");
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138 CASPAR_LOG(info) << print() << L" Successfully Initialized.";
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143 file_write_executor_.stop();
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144 file_write_executor_.join();
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151 THROW_ON_ERROR2(av_write_trailer(oc_.get()), "[ffmpeg_consumer]");
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156 for(size_t i = 0; i < oc_->nb_streams; i++)
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158 av_freep(&oc_->streams[i]->codec);
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159 av_freep(&oc_->streams[i]);
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162 if (!(oc_->oformat->flags & AVFMT_NOFILE))
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163 THROW_ON_ERROR2(avio_close(oc_->pb), "[ffmpeg_consumer]"); // Close the output ffmpeg.
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165 CASPAR_LOG(info) << print() << L" Successfully Uninitialized.";
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169 CASPAR_LOG_CURRENT_EXCEPTION();
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174 std::wstring print() const
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176 return L"ffmpeg[" + widen(filename_) + L"]";
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180 std::shared_ptr<AVStream> add_video_stream(enum CodecID codec_id, const std::string& options)
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182 auto st = av_new_stream(oc_.get(), 0);
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185 BOOST_THROW_EXCEPTION(caspar_exception()
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186 << msg_info("Could not alloc video-stream")
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187 << boost::errinfo_api_function("av_new_stream"));
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190 auto encoder = avcodec_find_encoder(codec_id);
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192 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));
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194 auto c = st->codec;
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196 avcodec_get_context_defaults3(c, encoder);
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198 c->codec_id = codec_id;
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199 c->codec_type = AVMEDIA_TYPE_VIDEO;
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200 c->width = format_desc_.width;
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201 c->height = format_desc_.height;
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202 c->time_base.den = format_desc_.time_scale;
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203 c->time_base.num = format_desc_.duration;
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206 if(c->codec_id == CODEC_ID_PRORES)
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208 c->bit_rate = c->bit_rate > 0 ? c->bit_rate : format_desc_.width < 1280 ? 42*1000000 : 147*1000000;
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209 c->pix_fmt = PIX_FMT_YUV422P10;
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210 CASPAR_LOG(info) << print() << L"Options set: " << av_set_options_string(c->priv_data, options.c_str(), "=", ":");
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212 else if(c->codec_id == CODEC_ID_DNXHD)
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214 if(format_desc_.width < 1280 || format_desc_.height < 720)
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215 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("unsupported dimension"));
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217 c->bit_rate = c->bit_rate > 0 ? c->bit_rate : 220*1000000;
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218 c->pix_fmt = PIX_FMT_YUV422P;
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220 CASPAR_LOG(info) << print() << L"Options set: " << av_set_options_string(c->priv_data, options.c_str(), "=", ":");
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222 else if(c->codec_id == CODEC_ID_DVVIDEO)
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224 c->bit_rate = c->bit_rate > 0 ? c->bit_rate : format_desc_.width < 1280 ? 50*1000000 : 100*1000000;
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225 c->pix_fmt = PIX_FMT_YUV422P;
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227 CASPAR_LOG(info) << print() << L"Options set: " << av_set_options_string(c->priv_data, options.c_str(), "=", ":");
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229 else if(c->codec_id == CODEC_ID_H264)
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231 c->pix_fmt = PIX_FMT_YUV420P;
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232 av_opt_set(c->priv_data, "preset", "faster", 0);
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234 CASPAR_LOG(info) << print() << L"Options set: " << av_set_options_string(c->priv_data, options.c_str(), "=", ":");
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236 c->max_b_frames = 0; // b-franes bit supported.
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240 CASPAR_LOG(info) << print() << L"Options set: " << av_set_options_string(c->priv_data, options.c_str(), "=", ":");
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241 CASPAR_LOG(warning) << " Potentially unsupported output parameters.";
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244 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)
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245 c->flags |= CODEC_FLAG_GLOBAL_HEADER;
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247 c->thread_count = boost::thread::hardware_concurrency();
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248 THROW_ON_ERROR2(avcodec_open(c, encoder), "[ffmpeg_consumer]");
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250 return std::shared_ptr<AVStream>(st, [](AVStream* st)
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252 avcodec_close(st->codec);
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256 std::shared_ptr<AVStream> add_audio_stream()
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258 auto st = av_new_stream(oc_.get(), 1);
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261 BOOST_THROW_EXCEPTION(caspar_exception()
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262 << msg_info("Could not alloc audio-stream")
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263 << boost::errinfo_api_function("av_new_stream"));
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266 st->codec->codec_id = CODEC_ID_PCM_S16LE;
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267 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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268 st->codec->sample_rate = 48000;
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269 st->codec->channels = 2;
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270 st->codec->sample_fmt = SAMPLE_FMT_S16;
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272 if(oc_->oformat->flags & AVFMT_GLOBALHEADER)
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273 st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
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275 auto codec = avcodec_find_encoder(st->codec->codec_id);
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277 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("codec not found"));
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279 THROW_ON_ERROR2(avcodec_open(st->codec, codec), "[ffmpeg_consumer]");
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281 return std::shared_ptr<AVStream>(st, [](AVStream* st)
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283 avcodec_close(st->codec);
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287 std::shared_ptr<AVFrame> convert_video_frame(const safe_ptr<core::read_frame>& frame, AVCodecContext* c)
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289 if(!img_convert_ctx_)
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291 img_convert_ctx_.reset(sws_getContext(format_desc_.width, format_desc_.height, PIX_FMT_BGRA, c->width, c->height, c->pix_fmt, SWS_BICUBIC, nullptr, nullptr, nullptr), sws_freeContext);
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292 if (img_convert_ctx_ == nullptr)
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293 BOOST_THROW_EXCEPTION(caspar_exception() << msg_info("Cannot initialize the conversion context"));
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296 std::shared_ptr<AVFrame> av_frame(avcodec_alloc_frame(), av_free);
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297 avpicture_fill(reinterpret_cast<AVPicture*>(av_frame.get()), const_cast<uint8_t*>(frame->image_data().begin()), PIX_FMT_BGRA, format_desc_.width, format_desc_.height);
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299 std::shared_ptr<AVFrame> local_av_frame(avcodec_alloc_frame(), av_free);
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300 picture_buf_.resize(avpicture_get_size(c->pix_fmt, format_desc_.width, format_desc_.height));
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301 avpicture_fill(reinterpret_cast<AVPicture*>(local_av_frame.get()), picture_buf_.data(), c->pix_fmt, format_desc_.width, format_desc_.height);
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303 sws_scale(img_convert_ctx_.get(), av_frame->data, av_frame->linesize, 0, c->height, local_av_frame->data, local_av_frame->linesize);
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305 return local_av_frame;
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308 std::shared_ptr<AVPacket> encode_video_frame(const safe_ptr<core::read_frame>& frame)
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310 auto c = video_st_->codec;
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312 auto av_frame = convert_video_frame(frame, c);
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313 av_frame->interlaced_frame = format_desc_.field_mode != core::field_mode::progressive;
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314 av_frame->top_field_first = format_desc_.field_mode == core::field_mode::upper;
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315 av_frame->pts = frame_number_++;
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317 int out_size = THROW_ON_ERROR2(avcodec_encode_video(c, video_outbuf_.data(), video_outbuf_.size(), av_frame.get()), "[ffmpeg_consumer]");
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320 safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)
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325 av_init_packet(pkt.get());
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327 if (c->coded_frame->pts != AV_NOPTS_VALUE)
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328 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, video_st_->time_base);
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330 if(c->coded_frame->key_frame)
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331 pkt->flags |= AV_PKT_FLAG_KEY;
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333 pkt->stream_index = video_st_->index;
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334 pkt->data = video_outbuf_.data();
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335 pkt->size = out_size;
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337 av_dup_packet(pkt.get());
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343 std::shared_ptr<AVPacket> encode_audio_frame(const safe_ptr<core::read_frame>& frame)
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345 auto c = audio_st_->codec;
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347 auto audio_data = core::audio_32_to_16(frame->audio_data());
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349 safe_ptr<AVPacket> pkt(new AVPacket, [](AVPacket* p)
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354 av_init_packet(pkt.get());
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356 if (c->coded_frame && c->coded_frame->pts != AV_NOPTS_VALUE)
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357 pkt->pts = av_rescale_q(c->coded_frame->pts, c->time_base, audio_st_->time_base);
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359 pkt->flags |= AV_PKT_FLAG_KEY;
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360 pkt->stream_index = audio_st_->index;
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361 pkt->size = audio_data.size()*2;
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362 pkt->data = reinterpret_cast<uint8_t*>(audio_data.data());
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364 av_dup_packet(pkt.get());
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368 void send(const safe_ptr<core::read_frame>& frame)
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370 executor_.begin_invoke([=]
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372 frame_timer_.restart();
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373 auto video = encode_video_frame(frame);
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374 auto audio = encode_audio_frame(frame);
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375 graph_->update_value("frame-time", frame_timer_.elapsed()*format_desc_.fps*0.5);
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377 file_write_executor_.begin_invoke([=]
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379 write_timer_.restart();
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381 av_write_frame(oc_.get(), video.get());
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383 av_write_frame(oc_.get(), audio.get());
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384 graph_->update_value("write-time", write_timer_.elapsed()*format_desc_.fps*0.5);
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390 struct ffmpeg_consumer_proxy : public core::frame_consumer
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392 const std::wstring filename_;
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393 const bool key_only_;
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394 const std::string codec_;
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395 const std::string options_;
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397 std::unique_ptr<ffmpeg_consumer> consumer_;
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401 ffmpeg_consumer_proxy(const std::wstring& filename, bool key_only, const std::string codec, const std::string& options)
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402 : filename_(filename)
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403 , key_only_(key_only)
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404 , codec_(boost::to_lower_copy(codec))
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405 , options_(options)
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409 virtual void initialize(const core::video_format_desc& format_desc, int, int)
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412 consumer_.reset(new ffmpeg_consumer(narrow(filename_), format_desc, codec_, options_));
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415 virtual bool send(const safe_ptr<core::read_frame>& frame) override
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417 consumer_->send(frame);
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421 virtual std::wstring print() const override
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423 return consumer_ ? consumer_->print() : L"[ffmpeg_consumer]";
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426 virtual bool has_synchronization_clock() const override
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431 virtual size_t buffer_depth() const override
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437 safe_ptr<core::frame_consumer> create_ffmpeg_consumer(const std::vector<std::wstring>& params)
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439 if(params.size() < 2 || params[0] != L"FILE")
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440 return core::frame_consumer::empty();
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442 // TODO: Ask stakeholders about case where file already exists.
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443 boost::filesystem::remove(boost::filesystem::wpath(env::media_folder() + params[1])); // Delete the file if it exists
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444 bool key_only = std::find(params.begin(), params.end(), L"KEY_ONLY") != params.end();
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446 std::string codec = "dnxhd";
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447 auto codec_it = std::find(params.begin(), params.end(), L"CODEC");
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448 if(codec_it != params.end() && codec_it++ != params.end())
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449 codec = narrow(*codec_it);
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451 if(codec == "H264" || codec == "h264")
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454 std::string options = "";
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455 auto options_it = std::find(params.begin(), params.end(), L"OPTIONS");
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456 if(options_it != params.end() && options_it++ != params.end())
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457 options = narrow(*options_it);
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459 return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + params[1], key_only, codec, boost::to_lower_copy(options));
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462 safe_ptr<core::frame_consumer> create_ffmpeg_consumer(const boost::property_tree::ptree& ptree)
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464 std::string filename = ptree.get<std::string>("path");
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465 auto key_only = ptree.get("key-only", false);
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466 auto codec = ptree.get("codec", "dnxhd");
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467 auto options = ptree.get("options", "");
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469 return make_safe<ffmpeg_consumer_proxy>(env::media_folder() + widen(filename), key_only, codec, options);
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