Profiles.cpp

Go to the documentation of this file.

 
// Copyright (c) 2008-2019 OpenShot Studios, LLC
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#include <iomanip>
#include "Profiles.h"
#include "Exceptions.h"
 
using namespace openshot;
 
// default constructor
Profile::Profile() {
    // Initialize info values
    info.description = "";
    info.height = 0;
    info.width = 0;
    info.pixel_format = 0;
    info.fps.num = 0;
    info.fps.den = 0;
    info.pixel_ratio.num = 0;
    info.pixel_ratio.den = 0;
    info.display_ratio.num = 0;
    info.display_ratio.den = 0;
    info.interlaced_frame = false;
}
 
// @brief Constructor for Profile.
// @param path  The folder path / location of a profile file
Profile::Profile(std::string path) {
 
    bool read_file = false;
 
    // Call default constructor
    Profile();
 
    try
    {
        QFile inputFile(path.c_str());
        if (inputFile.open(QIODevice::ReadOnly))
        {
            QTextStream in(&inputFile);
            while (!in.atEnd())
            {
                QString line = in.readLine();
 
                if (line.length() <= 0)
                    continue;
 
                // Split current line
                QStringList parts = line.split( "=" );
                std::string setting = parts[0].toStdString();
                std::string value = parts[1].toStdString();
                int value_int = 0;
 
                // update struct (based on line number)
                if (setting == "description") {
                    info.description = value;
                }
                else if (setting == "frame_rate_num") {
                    std::stringstream(value) >> value_int;
                    info.fps.num = value_int;
                }
                else if (setting == "frame_rate_den") {
                    std::stringstream(value) >> value_int;
                    info.fps.den = value_int;
                }
                else if (setting == "width") {
                    std::stringstream(value) >> value_int;
                    info.width = value_int;
                }
                else if (setting == "height") {
                    std::stringstream(value) >> value_int;
                    info.height = value_int;
                }
                else if (setting == "progressive") {
                    std::stringstream(value) >> value_int;
                    info.interlaced_frame = !(bool)value_int;
                }
                else if (setting == "sample_aspect_num") {
                    std::stringstream(value) >> value_int;
                    info.pixel_ratio.num = value_int;
                }
                else if (setting == "sample_aspect_den") {
                    std::stringstream(value) >> value_int;
                    info.pixel_ratio.den = value_int;
                }
                else if (setting == "display_aspect_num") {
                    std::stringstream(value) >> value_int;
                    info.display_ratio.num = value_int;
                }
                else if (setting == "display_aspect_den") {
                    std::stringstream(value) >> value_int;
                    info.display_ratio.den = value_int;
                }
                else if (setting == "colorspace") {
                    std::stringstream(value) >> value_int;
                    info.pixel_format = value_int;
                }
            }
            read_file = true;
            inputFile.close();
        }
 
    }
    catch (const std::exception& e)
    {
        // Error parsing profile file
        throw InvalidFile("Profile could not be found or loaded (or is invalid).", path);
    }
 
    // Throw error if file was not read
    if (!read_file)
        // Error parsing profile file
        throw InvalidFile("Profile could not be found or loaded (or is invalid).", path);
}
 
// Return a formatted FPS
std::string Profile::formattedFPS(bool include_decimal) {
    // Format FPS to use 2 decimals (if needed)
    float fps = info.fps.ToFloat();
    std::stringstream fps_string;
    if (info.fps.den == 1) {
        // For example: 24.0 will become 24
        fps_string << std::fixed << std::setprecision(0) << fps;
    } else {
        // For example: 29.97002997 will become 29.97
        fps_string << std::fixed << std::setprecision(2) << fps;
        // Remove decimal place using QString (for convenience)
        if (!include_decimal) {
            QString fps_qstring = QString::fromStdString(fps_string.str());
            fps_qstring.replace(".", "");
            fps_string.str(fps_qstring.toStdString());
        }
    }
    return fps_string.str();
}
 
// Return a unique key of this profile (01920x1080i2997_16-09)
std::string Profile::Key() {
    std::stringstream output;
    std::string progressive_str = "p";
    if (info.interlaced_frame) {
        progressive_str = "i";
    }
    std::string fps_string = formattedFPS(false);
    output << std::setfill('0') << std::setw(5) << info.width << std::setfill('\0') << "x";
    output << std::setfill('0') << std::setw(4) << info.height << std::setfill('\0') << progressive_str;
    output << std::setfill('0') << std::setw(4) << fps_string << std::setfill('\0') << "_";
    output << std::setfill('0') << std::setw(2) << info.display_ratio.num << std::setfill('\0') << "-";
    output << std::setfill('0') << std::setw(2) << info.display_ratio.den << std::setfill('\0');
    return output.str();
}
 
// Return the name of this profile (1920x1080p29.97)
std::string Profile::ShortName() {
    std::stringstream output;
    std::string progressive_str = "p";
    if (info.interlaced_frame) {
        progressive_str = "i";
    }
    std::string fps_string = formattedFPS(true);
    output << info.width << "x" << info.height << progressive_str << fps_string;
    return output.str();
}
 
// Return a longer format name (1920x1080p @ 29.97 fps (16:9))
std::string Profile::LongName() {
    std::stringstream output;
    std::string progressive_str = "p";
    if (info.interlaced_frame) {
        progressive_str = "i";
    }
    std::string fps_string = formattedFPS(true);
    output << info.width << "x" << info.height << progressive_str << " @ " << fps_string
           << " fps (" << info.display_ratio.num << ":" << info.display_ratio.den << ")";
    return output.str();
}
 
// Return a longer format name (1920x1080p @ 29.97 fps (16:9) HD 1080i 29.97 fps)
std::string Profile::LongNameWithDesc() {
    std::stringstream output;
    std::string progressive_str = "p";
    if (info.interlaced_frame) {
        progressive_str = "i";
    }
    std::string fps_string = formattedFPS(true);
    output << info.width << "x" << info.height << progressive_str << " @ " << fps_string
           << " fps (" << info.display_ratio.num << ":" << info.display_ratio.den << ") " << info.description;
    return output.str();
}
 
// Save profile to file system
void Profile::Save(const std::string& file_path) const {
    std::ofstream file(file_path);
    if (!file.is_open()) {
        throw std::ios_base::failure("Failed to save profile.");
    }
 
    file << "description=" << info.description << "\n";
    file << "frame_rate_num=" << info.fps.num << "\n";
    file << "frame_rate_den=" << info.fps.den << "\n";
    file << "width=" << info.width << "\n";
    file << "height=" << info.height << "\n";
    file << "progressive=" << !info.interlaced_frame << "\n";  // Correct the boolean value for progressive/interlaced
    file << "sample_aspect_num=" << info.pixel_ratio.num << "\n";
    file << "sample_aspect_den=" << info.pixel_ratio.den << "\n";
    file << "display_aspect_num=" << info.display_ratio.num << "\n";
    file << "display_aspect_den=" << info.display_ratio.den << "\n";
    file << "pixel_format=" << info.pixel_format;
 
    file.close();
}
 
// Generate JSON string of this object
std::string Profile::Json() const {
 
    // Return formatted string
    return JsonValue().toStyledString();
}
 
// Generate Json::Value for this object
Json::Value Profile::JsonValue() const {
 
    // Create root json object
    Json::Value root;
    root["description"] = info.description;
    root["height"] = info.height;
    root["width"] = info.width;
    root["pixel_format"] = info.pixel_format;
    root["fps"] = Json::Value(Json::objectValue);
    root["fps"]["num"] = info.fps.num;
    root["fps"]["den"] = info.fps.den;
    root["pixel_ratio"] = Json::Value(Json::objectValue);
    root["pixel_ratio"]["num"] = info.pixel_ratio.num;
    root["pixel_ratio"]["den"] = info.pixel_ratio.den;
    root["display_ratio"] = Json::Value(Json::objectValue);
    root["display_ratio"]["num"] = info.display_ratio.num;
    root["display_ratio"]["den"] = info.display_ratio.den;
    root["progressive"] = !info.interlaced_frame;
 
    // return JsonValue
    return root;
}
 
// Load JSON string into this object
void Profile::SetJson(const std::string value) {
 
    // Parse JSON string into JSON objects
    try
    {
        const Json::Value root = openshot::stringToJson(value);
        // Set all values that match
        SetJsonValue(root);
    }
    catch (const std::exception& e)
    {
        // Error parsing JSON (or missing keys)
        throw InvalidJSON("JSON is invalid (missing keys or invalid data types)");
    }
}
 
// Load Json::Value into this object
void Profile::SetJsonValue(const Json::Value root) {
 
    if (!root["description"].isNull())
        info.description = root["description"].asString();
    if (!root["height"].isNull())
        info.height = root["height"].asInt();
    if (!root["width"].isNull())
        info.width = root["width"].asInt();
    if (!root["pixel_format"].isNull())
        info.pixel_format = root["pixel_format"].asInt();
    if (!root["fps"].isNull()) {
        info.fps.num = root["fps"]["num"].asInt();
        info.fps.den = root["fps"]["den"].asInt();
    }
    if (!root["pixel_ratio"].isNull()) {
        info.pixel_ratio.num = root["pixel_ratio"]["num"].asInt();
        info.pixel_ratio.den = root["pixel_ratio"]["den"].asInt();
        info.pixel_ratio.Reduce();
    }
    if (!root["display_ratio"].isNull()) {
        info.display_ratio.num = root["display_ratio"]["num"].asInt();
        info.display_ratio.den = root["display_ratio"]["den"].asInt();
        info.display_ratio.Reduce();
    }
    if (!root["progressive"].isNull())
        info.interlaced_frame = !root["progressive"].asBool();
 
}