Split the lib in smaller libs to ease unit tests
This commit is contained in:
emeric
@@ -0,0 +1,258 @@
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/*
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* Copyright (C) 2015 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "av/AvInfo.hpp"
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#include <array>
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#include "utils/Logger.hpp"
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#include "utils/String.hpp"
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namespace Av {
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static std::string averror_to_string(int error)
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{
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std::array<char, 128> buf = {0};
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if (av_strerror(error, buf.data(), buf.size()) == 0)
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return std::string(&buf[0]);
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else
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return "Unknown error";
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}
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MediaFileException::MediaFileException(int avError)
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: AvException("MediaFileException: " + averror_to_string(avError))
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{
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}
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MediaFile::MediaFile(const std::filesystem::path& p)
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: _p {p}
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{
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int error = avformat_open_input(&_context, _p.string().c_str(), nullptr, nullptr);
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if (error < 0)
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{
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LMS_LOG(AV, ERROR) << "Cannot open " << _p.string() << ": " << averror_to_string(error);
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throw MediaFileException(error);
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}
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error = avformat_find_stream_info(_context, nullptr);
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if (error < 0)
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{
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LMS_LOG(AV, ERROR) << "Cannot find stream information on " << _p.string() << ": " << averror_to_string(error);
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avformat_close_input(&_context);
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throw MediaFileException(error);
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}
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}
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MediaFile::~MediaFile()
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{
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avformat_close_input(&_context);
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}
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std::string
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MediaFile::getFormatName() const
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{
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return _context->iformat->name;
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}
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std::chrono::milliseconds
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MediaFile::getDuration() const
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{
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if (_context->duration == AV_NOPTS_VALUE)
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return std::chrono::milliseconds(0); // TODO estimate
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return std::chrono::milliseconds(_context->duration / AV_TIME_BASE * 1000);
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}
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void
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getMetaDataFromDictionnary(AVDictionary* dictionnary, std::map<std::string, std::string>& res)
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{
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if (!dictionnary)
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return;
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AVDictionaryEntry *tag = NULL;
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while ((tag = av_dict_get(dictionnary, "", tag, AV_DICT_IGNORE_SUFFIX)))
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{
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res[StringUtils::stringToUpper(tag->key)] = tag->value;
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}
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}
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std::map<std::string, std::string>
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MediaFile::getMetaData(void)
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{
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std::map<std::string, std::string> res;
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getMetaDataFromDictionnary(_context->metadata, res);
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// HACK for OGG files
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// If we did not find tags, search metadata in streams
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if (res.empty())
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{
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for (std::size_t i = 0; i < _context->nb_streams; ++i)
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{
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getMetaDataFromDictionnary(_context->streams[i]->metadata, res);
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if (!res.empty())
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break;
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}
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}
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return res;
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}
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std::vector<StreamInfo>
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MediaFile::getStreamInfo() const
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{
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std::vector<StreamInfo> res;
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for (std::size_t i {}; i < _context->nb_streams; ++i)
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{
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AVStream* avstream { _context->streams[i]};
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// Skip attached pics
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if (avstream->disposition & AV_DISPOSITION_ATTACHED_PIC)
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continue;
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if (!avstream->codecpar)
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{
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LMS_LOG(AV, ERROR) << "Skipping stream " << i << " since no codecpar is set";
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continue;
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}
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if (avstream->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
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continue;
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res.push_back( {i, static_cast<std::size_t>(avstream->codecpar->bit_rate)} );
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}
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return res;
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}
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std::optional<std::size_t>
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MediaFile::getBestStream() const
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{
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int res = av_find_best_stream(_context,
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AVMEDIA_TYPE_AUDIO,
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-1, // Auto
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-1, // Auto
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NULL,
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0);
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if (res < 0)
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return std::nullopt;
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return res;
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}
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bool
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MediaFile::hasAttachedPictures(void) const
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{
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for (std::size_t i = 0; i < _context->nb_streams; ++i)
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{
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if (_context->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC)
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return true;
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}
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return false;
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}
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std::vector<Picture>
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MediaFile::getAttachedPictures(std::size_t nbMaxPictures) const
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{
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static const std::map<int, std::string> codecMimeMap =
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{
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{ AV_CODEC_ID_BMP, "image/x-bmp" },
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{ AV_CODEC_ID_GIF, "image/gif" },
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{ AV_CODEC_ID_MJPEG, "image/jpeg" },
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{ AV_CODEC_ID_PNG, "image/png" },
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{ AV_CODEC_ID_PNG, "image/x-png" },
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{ AV_CODEC_ID_PPM, "image/x-portable-pixmap" },
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};
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std::vector<Picture> pictures;
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for (std::size_t i = 0; i < _context->nb_streams; ++i)
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{
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AVStream *avstream = _context->streams[i];
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// Skip attached pics
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if (!(avstream->disposition & AV_DISPOSITION_ATTACHED_PIC))
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continue;
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if (avstream->codecpar == nullptr)
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{
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LMS_LOG(AV, ERROR) << "Skipping stream " << i << " since no codecpar is set";
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continue;
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}
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Picture picture;
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auto itMime = codecMimeMap.find(avstream->codecpar->codec_id);
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if (itMime != codecMimeMap.end())
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{
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picture.mimeType = itMime->second;
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}
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else
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{
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picture.mimeType = "application/octet-stream";
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LMS_LOG(AV, ERROR) << "CODEC ID " << avstream->codecpar->codec_id << " not handled in mime type conversion";
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}
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AVPacket pkt = avstream->attached_pic;
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std::copy(pkt.data, pkt.data + pkt.size, std::back_inserter(picture.data));
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pictures.push_back( picture );
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if (pictures.size() >= nbMaxPictures)
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break;
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}
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return pictures;
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}
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std::optional<MediaFileFormat>
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guessMediaFileFormat(const std::filesystem::path& file)
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{
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AVOutputFormat* format {av_guess_format(NULL,file.string().c_str(),NULL)};
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if (!format || !format->name)
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return {};
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auto formats {StringUtils::splitString(format->name, ",")};
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if (formats.size() > 1)
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LMS_LOG(AV, INFO) << "File '" << file.string() << "' reported several formats: '" << format->name << "'";
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std::vector<std::string> mimeTypes;
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if (format->mime_type)
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mimeTypes = StringUtils::splitString(format->mime_type, ",");
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if (mimeTypes.empty())
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LMS_LOG(AV, INFO) << "File '" << file.string() << "', no mime type found!";
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else if (mimeTypes.size() > 1)
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LMS_LOG(AV, INFO) << "File '" << file.string() << "' reported several mime types: '" << format->mime_type << "'";
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MediaFileFormat res;
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res.format = formats.front();
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res.mimeType = mimeTypes.empty() ? "application/octet-stream" : mimeTypes.front();
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return res;
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}
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} // namespace Av
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@@ -0,0 +1,257 @@
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/*
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* Copyright (C) 2015 Emeric Poupon
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*
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* This file is part of LMS.
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*
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* LMS is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
|
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* (at your option) any later version.
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*
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* LMS is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with LMS. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "av/AvTranscoder.hpp"
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#include <atomic>
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#include <mutex>
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#include "av/AvInfo.hpp"
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#include "utils/IConfig.hpp"
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#include "utils/Path.hpp"
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#include "utils/Logger.hpp"
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#include "utils/Service.hpp"
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namespace Av {
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#define LMS_LOG_TRANSCODE(sev) LMS_LOG(TRANSCODE, sev) << "[" << _id << "] - "
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static std::atomic<size_t> globalId {};
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static std::filesystem::path ffmpegPath;
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void
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Transcoder::init()
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{
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ffmpegPath = ServiceProvider<IConfig>::get()->getPath("ffmpeg-file", "/usr/bin/ffmpeg");
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if (!std::filesystem::exists(ffmpegPath))
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throw LmsException {"File '" + ffmpegPath.string() + "' does not exist!"};
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}
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Transcoder::Transcoder(const std::filesystem::path& filePath, const TranscodeParameters& parameters)
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: _filePath {filePath},
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_parameters {parameters},
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_id {globalId++}
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{
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}
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bool
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Transcoder::start()
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{
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if (!std::filesystem::exists(_filePath))
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return false;
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else if (!std::filesystem::is_regular_file( _filePath) )
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return false;
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LMS_LOG_TRANSCODE(INFO) << "Transcoding file '" << _filePath.string() << "'";
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std::vector<std::string> args;
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args.emplace_back(ffmpegPath.string());
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// Make sure we do not produce anything in the stderr output
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// in order not to block the whole forked process
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args.emplace_back("-loglevel");
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args.emplace_back("quiet");
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args.emplace_back("-nostdin");
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// input Offset
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if (_parameters.offset)
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{
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args.emplace_back("-ss");
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args.emplace_back(std::to_string((*_parameters.offset).count()));
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}
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// Input file
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args.emplace_back("-i");
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args.emplace_back(_filePath.string());
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// Stream mapping, if set
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if (_parameters.stream)
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{
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args.emplace_back("-map");
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args.emplace_back("0:" + std::to_string(*_parameters.stream));
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}
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if (_parameters.stripMetadata)
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{
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// Strip metadata
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args.emplace_back("-map_metadata");
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args.emplace_back("-1");
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}
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// Skip video flows (including covers)
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args.emplace_back("-vn");
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// Codecs and formats
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if (_parameters.encoding)
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{
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// Output bitrates
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args.emplace_back("-b:a");
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args.emplace_back(std::to_string(_parameters.bitrate));
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switch (*_parameters.encoding)
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{
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case Encoding::MP3:
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args.emplace_back("-f");
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args.emplace_back("mp3");
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break;
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case Encoding::OGG_OPUS:
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args.emplace_back("-acodec");
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args.emplace_back("libopus");
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args.emplace_back("-f");
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args.emplace_back("ogg");
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break;
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case Encoding::MATROSKA_OPUS:
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args.emplace_back("-acodec");
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args.emplace_back("libopus");
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args.emplace_back("-f");
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args.emplace_back("matroska");
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break;
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case Encoding::OGG_VORBIS:
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args.emplace_back("-acodec");
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args.emplace_back("libvorbis");
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args.emplace_back("-f");
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args.emplace_back("ogg");
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break;
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case Encoding::WEBM_VORBIS:
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args.emplace_back("-acodec");
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args.emplace_back("libvorbis");
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args.emplace_back("-f");
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args.emplace_back("webm");
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break;
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default:
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return false;
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}
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_outputMimeType = encodingToMimetype(*_parameters.encoding);
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}
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else
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{
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auto mediaFileFormat {guessMediaFileFormat(_filePath)};
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if (!mediaFileFormat)
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{
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LMS_LOG(AV, ERROR) << "Cannot guess media file format for '" << _filePath.string() << "'";
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return false;
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}
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args.emplace_back("-acodec");
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args.emplace_back("copy");
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args.emplace_back("-f");
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args.emplace_back(mediaFileFormat->format);
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_outputMimeType = mediaFileFormat->mimeType;
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}
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args.emplace_back("pipe:1");
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LMS_LOG_TRANSCODE(DEBUG) << "Dumping args (" << args.size() << ")";
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for (const std::string& arg : args)
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LMS_LOG_TRANSCODE(DEBUG) << "Arg = '" << arg << "'";
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// make sure only one thread is executing this part of code
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{
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static std::mutex transcoderMutex;
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std::lock_guard<std::mutex> lock {transcoderMutex};
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_child = std::make_shared<redi::ipstream>();
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// Caution: stdin must have been closed before
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_child->open(ffmpegPath.string(), args);
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if (!_child->is_open())
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{
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LMS_LOG_TRANSCODE(DEBUG) << "Exec failed!";
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return false;
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}
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if (_child->out().eof())
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{
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LMS_LOG_TRANSCODE(DEBUG) << "Early end of file!";
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return false;
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}
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}
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LMS_LOG_TRANSCODE(DEBUG) << "Stream opened!";
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return true;
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}
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void
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Transcoder::process(std::vector<unsigned char>& output, std::size_t maxSize)
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{
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if (!_child || _isComplete)
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return;
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||||
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if (_child->out().fail())
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||||
{
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LMS_LOG_TRANSCODE(DEBUG) << "Stdout FAILED 2";
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}
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if (_child->out().eof())
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{
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LMS_LOG_TRANSCODE(DEBUG) << "Stdout ENDED 2";
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}
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output.resize(maxSize);
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//Read on the output stream
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_child->out().read(reinterpret_cast<char*>(&output[0]), maxSize);
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output.resize(_child->out().gcount());
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if (_child->out().fail())
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{
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LMS_LOG_TRANSCODE(DEBUG) << "Stdout FAILED";
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}
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if (_child->out().eof())
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{
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LMS_LOG_TRANSCODE(DEBUG) << "Stdout EOF!";
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_child->clear();
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||||
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_isComplete = true;
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_child.reset();
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}
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_total += output.size();
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LMS_LOG_TRANSCODE(DEBUG) << "nb bytes = " << output.size() << ", total = " << _total;
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||||
}
|
||||
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||||
Transcoder::~Transcoder()
|
||||
{
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||||
LMS_LOG_TRANSCODE(DEBUG) << ", ~Transcoder called! Total produced bytes = " << _total;
|
||||
|
||||
if (_child)
|
||||
{
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||||
LMS_LOG_TRANSCODE(DEBUG) << "Child still here!";
|
||||
_child->rdbuf()->kill(SIGKILL);
|
||||
LMS_LOG_TRANSCODE(DEBUG) << "Closing...";
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||||
_child->rdbuf()->close();
|
||||
LMS_LOG_TRANSCODE(DEBUG) << "Closing DONE";
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||||
}
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||||
}
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||||
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} // namespace Transcode
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@@ -0,0 +1,39 @@
|
||||
/*
|
||||
* Copyright (C) 2019 Emeric Poupon
|
||||
*
|
||||
* This file is part of LMS.
|
||||
*
|
||||
* LMS is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* LMS is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with LMS. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include "av/AvTypes.hpp"
|
||||
|
||||
namespace Av {
|
||||
|
||||
const char* encodingToMimetype(Encoding encoding)
|
||||
{
|
||||
switch (encoding)
|
||||
{
|
||||
case Encoding::MP3: return "audio/mpeg";
|
||||
case Encoding::OGG_OPUS: return "audio/opus";
|
||||
case Encoding::MATROSKA_OPUS: return "audio/x-matroska";
|
||||
case Encoding::OGG_VORBIS: return "audio/ogg";
|
||||
case Encoding::WEBM_VORBIS: return "audio/webm";
|
||||
}
|
||||
|
||||
throw AvException {"Invalid encoding"};
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
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