vlc_subtitles.cpp

/*******************************************************************************
* Copyright © 2013-2015, Sergey Radionov <rsatom_gmail.com>
* All rights reserved.
*
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* modification, are permitted provided that the following conditions are met:
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#include "vlc_subtitles.h"

#include "vlc_helpers.h"

using namespace vlc;

unsigned subtitles::track_count()
{
    if( _player.is_open() )
        return libvlc_video_get_spu_count( _player.get_mp() );

    return 0;
}

int subtitles::get_track()
{
    if( !_player.is_open() )
        return -1;

    int track_idx = -1;
    libvlc_track_description_t* tracks =
        libvlc_video_get_spu_description( _player.get_mp() );

    if( tracks ) {
        track_idx = track_id_2_track_idx( tracks, libvlc_video_get_spu( _player.get_mp() ) );

        libvlc_free( tracks );
    }

    return track_idx;
}

void subtitles::set_track( unsigned idx )
{
    if( !_player.is_open() )
        return;

    libvlc_track_description_t* tracks =
        libvlc_video_get_spu_description( _player.get_mp() );

    if( tracks ) {
        int id = track_idx_2_track_id( tracks, idx );
        libvlc_video_set_spu( _player.get_mp(), id );

        libvlc_free( tracks );
    }
}

int64_t subtitles::get_delay()
{
    if( !_player.is_open() )
        return 0;

    return libvlc_video_get_spu_delay( _player.get_mp() ) / 1000;
}

void subtitles::set_delay( int64_t d )
{
    if( !_player.is_open() )
        return;

    libvlc_video_set_spu_delay( _player.get_mp(), d * 1000 );
}

bool subtitles::load( const std::string& file )
{
    if( !_player.is_open() )
        return false;

    return 0 != libvlc_video_set_subtitle_file( _player.get_mp(), file.c_str() );
}