dvdio.h

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/*
 * Copyright (C) 2018-2024 by 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.
 *
 * On Debian systems, the complete text of the GNU General Public License
 * Version 3 can be found in `/usr/share/common-licenses/GPL-3'.
 */
 
#ifndef DVDIO_H
#define DVDIO_H
 
#pragma once
 
#ifdef USE_LIBDVD
 
#include "fileio.h"
 
#include <array>
 
#include <dvdread/ifo_read.h>
 
class DvdIO : public FileIO
{
    enum class DSITYPE
    {
        CONTINUE,       
        EOF_CHAPTER,    
        EOF_TITLE       
    };
 
public:
    explicit DvdIO();
    virtual ~DvdIO();
 
    virtual VIRTUALTYPE type() const override;
    virtual size_t  bufsize() const override;
 
    virtual int     openio(LPVIRTUALFILE virtualfile) override;
    virtual size_t  readio(void *data, size_t size) override;
    virtual int     error() const override;
    virtual int64_t duration() const override;
    virtual size_t  size() const override;
    virtual size_t  tell() const override;
    virtual int     seek(int64_t offset, int whence) override;
    virtual bool    eof() const override;
    virtual void    closeio() override;
 
private:
    void            pvt_close();
 
    bool            is_nav_pack(const unsigned char *buffer) const;
    bool            get_packet_size(const uint8_t *p, size_t peek, size_t *size) const;
    int             get_pes_id(const uint8_t *buffer, size_t size) const;
    size_t          demux_pes(uint8_t *out, const uint8_t *in, size_t len) const;
    DSITYPE         handle_DSI(void *_dsi_pack, size_t *cur_output_size, unsigned int * next_block, uint8_t *data);
    void            next_cell();
    void            rewind();
 
protected:
    dvd_reader_t *  m_dvd;                                          
    dvd_file_t *    m_dvd_title;                                    
    ifo_handle_t *  m_vmg_file;                                     
    ifo_handle_t *  m_vts_file;                                     
    pgc_t *         m_cur_pgc;                                      
    int             m_start_cell;                                   
    int             m_end_cell;                                     
    int             m_cur_cell;                                     
    int             m_next_cell;                                    
    bool            m_goto_next_cell;                               
    unsigned int    m_cur_block;                                    
    bool            m_is_eof;                                       
    int             m_errno;                                        
    size_t          m_rest_size;                                    
    size_t          m_rest_pos;                                     
    size_t          m_cur_pos;                                      
    bool            m_full_title;                                   
    int             m_title_idx;                                    
    int             m_chapter_idx;                                  
    int             m_angle_idx;                                    
    std::array<unsigned char, 1024 * DVD_VIDEO_LB_LEN>  m_data;     
    std::array<unsigned char, 1024 * DVD_VIDEO_LB_LEN>  m_buffer;   
    int64_t         m_duration;                                     
    size_t          m_size;                                         
};
#endif // USE_LIBDVD
 
#endif // DVDIO_H