# FFmpegKit Linux API: MediaInformationJsonParser.cpp Source File

MediaInformationJsonParser.cpp
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/*
* Copyright (c) 2022 Taner Sener
*
* This file is part of FFmpegKit.
*
* FFmpegKit is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* FFmpegKit 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with FFmpegKit. If not, see <http://www.gnu.org/licenses/>.
*/
#include "MediaInformationJsonParser.h"
// OVERRIDING THE MACRO TO PREVENT APPLICATION TERMINATION
#define RAPIDJSON_ASSERT(x)
#include "rapidjson/reader.h"
#include "rapidjson/document.h"
#include "rapidjson/error/en.h"
#include <memory>
static const char* MediaInformationJsonParserKeyStreams = "streams";
static const char* MediaInformationJsonParserKeyChapters = "chapters";
std::shared_ptr<ffmpegkit::MediaInformation> ffmpegkit::MediaInformationJsonParser::from(const std::string& ffprobeJsonOutput) {
try {
return fromWithError(ffprobeJsonOutput);
} catch(const std::exception& exception) {
std::cout << "MediaInformation parsing failed: " << exception.what() << std::endl;
return nullptr;
}
}
std::shared_ptr<ffmpegkit::MediaInformation> ffmpegkit::MediaInformationJsonParser::fromWithError(const std::string& ffprobeJsonOutput) {
std::shared_ptr<rapidjson::Document> document = std::make_shared<rapidjson::Document>();
document->Parse(ffprobeJsonOutput.c_str());
if (document->HasParseError()) {
throw std::runtime_error(GetParseError_En(document->GetParseError()));
} else {
std::shared_ptr<std::vector<std::shared_ptr<ffmpegkit::StreamInformation>>> streams = std::make_shared<std::vector<std::shared_ptr<ffmpegkit::StreamInformation>>>();
std::shared_ptr<std::vector<std::shared_ptr<ffmpegkit::Chapter>>> chapters = std::make_shared<std::vector<std::shared_ptr<ffmpegkit::Chapter>>>();
if (document->HasMember(MediaInformationJsonParserKeyStreams)) {
rapidjson::Value& streamArray = (*document.get())[MediaInformationJsonParserKeyStreams];
if (streamArray.IsArray()) {
for (rapidjson::SizeType i = 0; i < streamArray.Size(); i++) {
auto stream = std::make_shared<rapidjson::Value>();
*stream = streamArray[i];
streams->push_back(std::make_shared<ffmpegkit::StreamInformation>(stream));
}
}
}
if (document->HasMember(MediaInformationJsonParserKeyChapters)) {
rapidjson::Value& chapterArray = (*document.get())[MediaInformationJsonParserKeyChapters];
if (chapterArray.IsArray()) {
for (rapidjson::SizeType i = 0; i < chapterArray.Size(); i++) {
auto chapter = std::make_shared<rapidjson::Value>();
*chapter = chapterArray[i];
chapters->push_back(std::make_shared<ffmpegkit::Chapter>(chapter));
}
}
}
return std::make_shared<ffmpegkit::MediaInformation>(std::static_pointer_cast<rapidjson::Value>(document), streams, chapters);
}
}
MediaInformationJsonParserKeyStreams
static const char * MediaInformationJsonParserKeyStreams
Definition: MediaInformationJsonParser.cpp:28
MediaInformationJsonParserKeyChapters
static const char * MediaInformationJsonParserKeyChapters
Definition: MediaInformationJsonParser.cpp:29
MediaInformationJsonParser.h
ffmpegkit::MediaInformationJsonParser::from
static std::shared_ptr< ffmpegkit::MediaInformation > from(const std::string &ffprobeJsonOutput)
Definition: MediaInformationJsonParser.cpp:31
ffmpegkit::MediaInformationJsonParser::fromWithError
static std::shared_ptr< ffmpegkit::MediaInformation > fromWithError(const std::string &ffprobeJsonOutput)
Definition: MediaInformationJsonParser.cpp:40