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22bf6edfba
- Parsing from string to Json::Value is now done by utility function openshot::stringToJson() in Json.cpp, all SetJson() methods call it. - Expand use of const member functions and args where appropriate. - Use std::to_string() to format int/float values as strings. - Correct mentions of nonexistent Json::JsonValue type in docstrings
290 lines
12 KiB
C++
290 lines
12 KiB
C++
/**
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* @file
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* @brief Source file for WriterBase class
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @ref License
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*/
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/* LICENSE
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*
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* Copyright (c) 2008-2019 OpenShot Studios, LLC
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* <http://www.openshotstudios.com/>. This file is part of
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* OpenShot Library (libopenshot), an open-source project dedicated to
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* delivering high quality video editing and animation solutions to the
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* world. For more information visit <http://www.openshot.org/>.
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*
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* OpenShot Library (libopenshot) is free software: you can redistribute it
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* and/or modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* OpenShot Library (libopenshot) is distributed in the hope that it will be
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* useful, 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "../include/WriterBase.h"
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using namespace openshot;
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// Constructor
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WriterBase::WriterBase()
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{
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// Initialized writer info
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info.has_video = false;
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info.has_audio = false;
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info.has_single_image = false;
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info.duration = 0.0;
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info.file_size = 0;
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info.height = 0;
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info.width = 0;
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info.pixel_format = -1;
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info.fps = Fraction();
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info.video_bit_rate = 0;
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info.pixel_ratio = Fraction();
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info.display_ratio = Fraction();
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info.vcodec = "";
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info.video_length = 0;
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info.video_stream_index = -1;
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info.video_timebase = Fraction();
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info.interlaced_frame = false;
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info.top_field_first = true;
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info.acodec = "";
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info.audio_bit_rate = 0;
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info.sample_rate = 0;
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info.channels = 0;
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info.channel_layout = LAYOUT_MONO;
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info.audio_stream_index = -1;
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info.audio_timebase = Fraction();
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}
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// This method copy's the info struct of a reader, and sets the writer with the same info
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void WriterBase::CopyReaderInfo(ReaderBase* reader)
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{
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info.has_video = reader->info.has_video;
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info.has_audio = reader->info.has_audio;
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info.has_single_image = reader->info.has_single_image;
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info.duration = reader->info.duration;
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info.file_size = reader->info.file_size;
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info.height = reader->info.height;
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info.width = reader->info.width;
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info.pixel_format = reader->info.pixel_format;
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info.fps.num = reader->info.fps.num;
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info.fps.den = reader->info.fps.den;
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info.video_bit_rate = reader->info.video_bit_rate;
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info.pixel_ratio.num = reader->info.pixel_ratio.num;
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info.pixel_ratio.den = reader->info.pixel_ratio.den;
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info.display_ratio.num = reader->info.display_ratio.num;
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info.display_ratio.den = reader->info.display_ratio.den;
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info.vcodec = reader->info.vcodec;
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info.video_length = reader->info.video_length;
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info.video_stream_index = reader->info.video_stream_index;
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info.video_timebase.num = reader->info.video_timebase.num;
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info.video_timebase.den = reader->info.video_timebase.den;
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info.interlaced_frame = reader->info.interlaced_frame;
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info.top_field_first = reader->info.top_field_first;
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info.acodec = reader->info.acodec;
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info.audio_bit_rate = reader->info.audio_bit_rate;
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info.sample_rate = reader->info.sample_rate;
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info.channels = reader->info.channels;
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info.channel_layout = reader->info.channel_layout;
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info.audio_stream_index = reader->info.audio_stream_index;
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info.audio_timebase.num = reader->info.audio_timebase.num;
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info.audio_timebase.den = reader->info.audio_timebase.den;
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}
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// Display file information
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void WriterBase::DisplayInfo() {
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std::cout << std::fixed << std::setprecision(2) << std::boolalpha;
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std::cout << "----------------------------" << std::endl;
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std::cout << "----- File Information -----" << std::endl;
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std::cout << "----------------------------" << std::endl;
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std::cout << "--> Has Video: " << info.has_video << std::endl;
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std::cout << "--> Has Audio: " << info.has_audio << std::endl;
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std::cout << "--> Has Single Image: " << info.has_single_image << std::endl;
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std::cout << "--> Duration: " << info.duration << " Seconds" << std::endl;
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std::cout << "--> File Size: " << double(info.file_size) / 1024 / 1024 << " MB" << std::endl;
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std::cout << "----------------------------" << std::endl;
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std::cout << "----- Video Attributes -----" << std::endl;
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std::cout << "----------------------------" << std::endl;
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std::cout << "--> Width: " << info.width << std::endl;
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std::cout << "--> Height: " << info.height << std::endl;
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std::cout << "--> Pixel Format: " << info.pixel_format << std::endl;
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std::cout << "--> Frames Per Second: " << info.fps.ToDouble() << " (" << info.fps.num << "/" << info.fps.den << ")" << std::endl;
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std::cout << "--> Video Bit Rate: " << info.video_bit_rate/1000 << " kb/s" << std::endl;
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std::cout << "--> Pixel Ratio: " << info.pixel_ratio.ToDouble() << " (" << info.pixel_ratio.num << "/" << info.pixel_ratio.den << ")" << std::endl;
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std::cout << "--> Display Aspect Ratio: " << info.display_ratio.ToDouble() << " (" << info.display_ratio.num << "/" << info.display_ratio.den << ")" << std::endl;
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std::cout << "--> Video Codec: " << info.vcodec << std::endl;
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std::cout << "--> Video Length: " << info.video_length << " Frames" << std::endl;
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std::cout << "--> Video Stream Index: " << info.video_stream_index << std::endl;
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std::cout << "--> Video Timebase: " << info.video_timebase.ToDouble() << " (" << info.video_timebase.num << "/" << info.video_timebase.den << ")" << std::endl;
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std::cout << "--> Interlaced: " << info.interlaced_frame << std::endl;
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std::cout << "--> Interlaced: Top Field First: " << info.top_field_first << std::endl;
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std::cout << "----------------------------" << std::endl;
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std::cout << "----- Audio Attributes -----" << std::endl;
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std::cout << "----------------------------" << std::endl;
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std::cout << "--> Audio Codec: " << info.acodec << std::endl;
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std::cout << "--> Audio Bit Rate: " << info.audio_bit_rate/1000 << " kb/s" << std::endl;
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std::cout << "--> Sample Rate: " << info.sample_rate << " Hz" << std::endl;
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std::cout << "--> # of Channels: " << info.channels << std::endl;
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std::cout << "--> Channel Layout: " << info.channel_layout << std::endl;
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std::cout << "--> Audio Stream Index: " << info.audio_stream_index << std::endl;
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std::cout << "--> Audio Timebase: " << info.audio_timebase.ToDouble() << " (" << info.audio_timebase.num << "/" << info.audio_timebase.den << ")" << std::endl;
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std::cout << "----------------------------" << std::endl;
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}
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// Generate JSON string of this object
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std::string WriterBase::Json() const {
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// Return formatted string
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return JsonValue().toStyledString();
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}
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// Generate Json::Value for this object
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Json::Value WriterBase::JsonValue() const {
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// Create root json object
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Json::Value root;
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root["has_video"] = info.has_video;
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root["has_audio"] = info.has_audio;
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root["has_single_image"] = info.has_single_image;
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root["duration"] = info.duration;
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std::stringstream filesize_stream;
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filesize_stream << info.file_size;
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root["file_size"] = filesize_stream.str();
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root["height"] = info.height;
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root["width"] = info.width;
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root["pixel_format"] = info.pixel_format;
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root["fps"] = Json::Value(Json::objectValue);
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root["fps"]["num"] = info.fps.num;
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root["fps"]["den"] = info.fps.den;
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root["video_bit_rate"] = info.video_bit_rate;
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root["pixel_ratio"] = Json::Value(Json::objectValue);
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root["pixel_ratio"]["num"] = info.pixel_ratio.num;
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root["pixel_ratio"]["den"] = info.pixel_ratio.den;
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root["display_ratio"] = Json::Value(Json::objectValue);
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root["display_ratio"]["num"] = info.display_ratio.num;
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root["display_ratio"]["den"] = info.display_ratio.den;
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root["vcodec"] = info.vcodec;
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std::stringstream video_length_stream;
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video_length_stream << info.video_length;
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root["video_length"] = video_length_stream.str();
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root["video_stream_index"] = info.video_stream_index;
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root["video_timebase"] = Json::Value(Json::objectValue);
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root["video_timebase"]["num"] = info.video_timebase.num;
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root["video_timebase"]["den"] = info.video_timebase.den;
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root["interlaced_frame"] = info.interlaced_frame;
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root["top_field_first"] = info.top_field_first;
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root["acodec"] = info.acodec;
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root["audio_bit_rate"] = info.audio_bit_rate;
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root["sample_rate"] = info.sample_rate;
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root["channels"] = info.channels;
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root["channel_layout"] = info.channel_layout;
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root["audio_stream_index"] = info.audio_stream_index;
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root["audio_timebase"] = Json::Value(Json::objectValue);
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root["audio_timebase"]["num"] = info.audio_timebase.num;
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root["audio_timebase"]["den"] = info.audio_timebase.den;
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// return JsonValue
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return root;
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}
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// Load JSON string into this object
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void WriterBase::SetJson(const std::string value) {
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// Parse JSON string into JSON objects
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try
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{
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const Json::Value root = openshot::stringToJson(value);
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// Set all values that match
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SetJsonValue(root);
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}
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catch (const std::exception& e)
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{
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// Error parsing JSON (or missing keys)
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throw InvalidJSON("JSON is invalid (missing keys or invalid data types)");
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}
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}
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// Load Json::Value into this object
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void WriterBase::SetJsonValue(const Json::Value root) {
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// Set data from Json (if key is found)
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if (!root["has_video"].isNull())
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info.has_video = root["has_video"].asBool();
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if (!root["has_audio"].isNull())
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info.has_audio = root["has_audio"].asBool();
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if (!root["has_single_image"].isNull())
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info.has_single_image = root["has_single_image"].asBool();
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if (!root["duration"].isNull())
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info.duration = root["duration"].asDouble();
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if (!root["file_size"].isNull())
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info.file_size = (int64_t) root["file_size"].asUInt();
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if (!root["height"].isNull())
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info.height = root["height"].asInt();
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if (!root["width"].isNull())
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info.width = root["width"].asInt();
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if (!root["pixel_format"].isNull())
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info.pixel_format = root["pixel_format"].asInt();
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if (!root["fps"].isNull() && root["fps"].isObject()) {
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if (!root["fps"]["num"].isNull())
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info.fps.num = root["fps"]["num"].asInt();
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if (!root["fps"]["den"].isNull())
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info.fps.den = root["fps"]["den"].asInt();
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}
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if (!root["video_bit_rate"].isNull())
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info.video_bit_rate = root["video_bit_rate"].asInt();
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if (!root["pixel_ratio"].isNull() && root["pixel_ratio"].isObject()) {
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if (!root["pixel_ratio"]["num"].isNull())
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info.pixel_ratio.num = root["pixel_ratio"]["num"].asInt();
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if (!root["pixel_ratio"]["den"].isNull())
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info.pixel_ratio.den = root["pixel_ratio"]["den"].asInt();
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}
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if (!root["display_ratio"].isNull() && root["display_ratio"].isObject()) {
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if (!root["display_ratio"]["num"].isNull())
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info.display_ratio.num = root["display_ratio"]["num"].asInt();
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if (!root["display_ratio"]["den"].isNull())
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info.display_ratio.den = root["display_ratio"]["den"].asInt();
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}
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if (!root["vcodec"].isNull())
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info.vcodec = root["vcodec"].asString();
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if (!root["video_length"].isNull())
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info.video_length = (int64_t) root["video_length"].asUInt();
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if (!root["video_stream_index"].isNull())
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info.video_stream_index = root["video_stream_index"].asInt();
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if (!root["video_timebase"].isNull() && root["video_timebase"].isObject()) {
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if (!root["video_timebase"]["num"].isNull())
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info.video_timebase.num = root["video_timebase"]["num"].asInt();
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if (!root["video_timebase"]["den"].isNull())
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info.video_timebase.den = root["video_timebase"]["den"].asInt();
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}
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if (!root["interlaced_frame"].isNull())
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info.interlaced_frame = root["interlaced_frame"].asBool();
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if (!root["top_field_first"].isNull())
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info.top_field_first = root["top_field_first"].asBool();
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if (!root["acodec"].isNull())
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info.acodec = root["acodec"].asString();
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if (!root["audio_bit_rate"].isNull())
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info.audio_bit_rate = root["audio_bit_rate"].asInt();
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if (!root["sample_rate"].isNull())
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info.sample_rate = root["sample_rate"].asInt();
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if (!root["channels"].isNull())
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info.channels = root["channels"].asInt();
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if (!root["channel_layout"].isNull())
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info.channel_layout = (ChannelLayout) root["channel_layout"].asInt();
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if (!root["audio_stream_index"].isNull())
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info.audio_stream_index = root["audio_stream_index"].asInt();
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if (!root["audio_timebase"].isNull() && root["audio_timebase"].isObject()) {
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if (!root["audio_timebase"]["num"].isNull())
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info.audio_timebase.num = root["audio_timebase"]["num"].asInt();
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if (!root["audio_timebase"]["den"].isNull())
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info.audio_timebase.den = root["audio_timebase"]["den"].asInt();
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}
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}
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