vcdutils.cc

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/*
 * Copyright (C) 2017-2024 Norbert Schlia (nschlia@oblivion-software.de)
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
#include "ffmpegfs.h"
#include "vcd/vcdchapter.h"
#include "vcdutils.h"
#include "ffmpeg_utils.h"
 
#include <cstring>
#include <unistd.h>
#include <sys/stat.h>
 
namespace VCDUTILS
{
std::string convert_txt2string(const char * txt, int size, bool trimmed)
{
    std::unique_ptr<char[]> buffer = std::make_unique<char[]>(static_cast<size_t>(size + 1));
    std::string ret_value;
 
    if (buffer != nullptr)
    {
        std::memcpy(buffer.get(), txt, static_cast<size_t>(size));
        *(buffer.get() + size) = '\0';
 
        ret_value = buffer.get();
    }
 
    if (trimmed)
    {
        return trim(ret_value);
    }
    else
    {
        return ret_value;
    }
}
 
bool locate_file(const std::string & path, const std::string & filename, std::string & fullname, bool & is_vcd)
{
    is_vcd = false;
 
    // Try VCD
    fullname = path + "VCD/" + filename + ".VCD";
 
    if (!access(fullname.c_str(), F_OK))
    {
        return true;
    }
 
    // Try SVCD
    fullname = path + "SVCD/" + filename + ".SVD";
 
    if (!access(fullname.c_str(), F_OK))
    {
        is_vcd = true;
        return true;
    }
 
    return false;
}
 
int locate_video(const std::string & path, int track_no, std::string & fullname)
{
    std::string buffer;
 
    // Try VCD
    strsprintf(&buffer, "MPEGAV/AVSEQ%02i.DAT", track_no - 1);
    fullname = path + buffer;
    if (!access(fullname.c_str(), F_OK))
    {
        return 0;
    }
 
    // Try SVCD
    strsprintf(&buffer, "MPEG2/AVSEQ%02i.MPG", track_no - 1);
    fullname = path + buffer;
    if (!access(fullname.c_str(), F_OK))
    {
        return 0;
    }
 
    return ENOENT;
}
 
std::string get_type_str(VCDTYPE type)
{
    switch (type)
    {
    case VCDTYPE::VCD_10_11_SVCD_10_HQVCD:
    {
        return "VCD 1.0, VCD 1.1, SVCD 1.0, HQVCD";
    }
 
    case VCDTYPE::VCD_20:
    {
        return "VCD 2.0";
    }
 
    default:
    {
        return "";
    }
    }
}
 
std::string get_profile_tag_str(VCDPROFILETAG tag)
{
    switch (tag)
    {
    case VCDPROFILETAG::VCD_10_20_SVCD_HQVCD:
    {
        return "VCD 1.0, VCD 2.0, SVCD, HQVCD";
    }
    case VCDPROFILETAG::VCD_11:
    {
        return "VCD 1.1";
    }
    default:
    {
        return "";
    }
    }
}
 
void get_directory(const std::string & fullname, std::string *directory)
{
    struct stat stbuf;
 
    stat(fullname.c_str(), &stbuf);
 
    if (S_ISDIR(stbuf.st_mode))
    {
        // Already a directory
        *directory = fullname;
        append_sep(directory);
    }
 
    else
    {
        // Make it a directory
        *directory = fullname;
        remove_filename(directory);
    }
}
}