rc.c

VLC媒体播放程序

                    printf( "no input\n" );
                }
            }
            else switch( psz_cmd[0] )
            {
            case 'f':
            case 'F':
                if( p_input )
                {
                    vout_thread_t *p_vout;
                    p_vout = vlc_object_find( p_input,
                                              VLC_OBJECT_VOUT, FIND_CHILD );

                    if( p_vout )
                    {
                        p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
                        vlc_object_release( p_vout );
                    }
                }
                break;

            case 's':
            case 'S':
                ;
                break;

            case '?':
            case 'h':
            case 'H':
                printf("+----[ Remote control commands ]\n");
                printf("| \n");
                printf("| add XYZ  . . . . . . . . . . add XYZ to playlist\n");
                printf("| playlist . . .  show items currently in playlist\n");
                printf("| play . . . . . . . . . . . . . . . . play stream\n");
                printf("| stop . . . . . . . . . . . . . . . . stop stream\n");
                printf("| next . . . . . . . . . . . .  next playlist item\n");
                printf("| prev . . . . . . . . . .  previous playlist item\n");
                printf("| title [X]  . . . . set/get title in current item\n");
                printf("| title_n  . . . . . .  next title in current item\n");
                printf("| title_p  . . . .  previous title in current item\n");
                printf("| chapter [X]  . . set/get chapter in current item\n");
                printf("| chapter_n  . . . .  next chapter in current item\n");
                printf("| chapter_p  . .  previous chapter in current item\n");
                printf("| \n");
                printf("| seek X . seek in seconds, for instance `seek 12'\n");
                printf("| pause  . . . . . . . . . . . . . .  toggle pause\n");
                printf("| f  . . . . . . . . . . . . . . toggle fullscreen\n");
                printf("| info . . .  information about the current stream\n");
                printf("| \n");
                printf("| volume [X] . . . . . . . .  set/get audio volume\n");
                printf("| volup [X]  . . . . .  raise audio volume X steps\n");
                printf("| voldown [X]  . . . .  lower audio volume X steps\n");
                printf("| adev [X] . . . . . . . . .  set/get audio device\n");
                printf("| achan [X]. . . . . . . .  set/get audio channels\n");
                printf("| \n");
                printf("| help . . . . . . . . . . . . . this help message\n");
                printf("| quit . . . . . . . . . . . . . . . . .  quit vlc\n");
                printf("| \n");
                printf("+----[ end of help ]\n");
                break;
            case '\0':
                /* Ignore empty lines */
                break;
            default:
                printf( "unknown command `%s', type `help' for help\n", psz_cmd );
                break;
            }
        }
    }

    if( p_input )
    {
        vlc_object_release( p_input );
        p_input = NULL;
    }

    if( p_playlist )
    {
        vlc_object_release( p_playlist );
        p_playlist = NULL;
    }
}

static int Input( vlc_object_t *p_this, char const *psz_cmd,
                  vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    input_thread_t * p_input;
    vlc_value_t     val;

    p_input = vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_ANYWHERE );

    if( !p_input )
    {
        return VLC_ENOOBJ;
    }

    /* Parse commands that only require an input */
    if( !strcmp( psz_cmd, "pause" ) )
    {
        val.i_int = PAUSE_S;

        var_Set( p_input, "state", val );
        vlc_object_release( p_input );
        return VLC_SUCCESS;
    }
    else if( !strcmp( psz_cmd, "seek" ) )
    {
        if( strlen( newval.psz_string ) > 0 &&
            newval.psz_string[strlen( newval.psz_string ) - 1] == '%' )
        {
            val.f_float = (float)atoi( newval.psz_string ) / 100.0;
            var_Set( p_input, "position", val );
        }
        else
        {
            val.i_time = ((int64_t)atoi( newval.psz_string )) * 1000000;
            var_Set( p_input, "time", val );
        }
        vlc_object_release( p_input );
        return VLC_SUCCESS;
    }
    else if( !strcmp( psz_cmd, "chapter" ) ||
             !strcmp( psz_cmd, "chapter_n" ) ||
             !strcmp( psz_cmd, "chapter_p" ) )
    {
        if( !strcmp( psz_cmd, "chapter" ) )
        {
            if ( *newval.psz_string )
            {
                /* Set. */
                val.i_int = atoi( newval.psz_string );
                var_Set( p_input, "chapter", val );
            }
            else
            {
                vlc_value_t val_list;

                /* Get. */
                var_Get( p_input, "chapter", &val );
                var_Change( p_input, "chapter", VLC_VAR_GETCHOICES, &val_list, NULL );
                printf( "Currently playing chapter %d/%d\n", val.i_int, val_list.p_list->i_count );
                var_Change( p_this, "chapter", VLC_VAR_FREELIST, &val_list, NULL );
            }
        }
        else if( !strcmp( psz_cmd, "chapter_n" ) )
        {
            val.b_bool = VLC_TRUE;
            var_Set( p_input, "next-chapter", val );
        }
        else if( !strcmp( psz_cmd, "chapter_p" ) )
        {
            val.b_bool = VLC_TRUE;
            var_Set( p_input, "prev-chapter", val );
        }

        vlc_object_release( p_input );
        return VLC_SUCCESS;
    }
    else if( !strcmp( psz_cmd, "title" ) ||
             !strcmp( psz_cmd, "title_n" ) ||
             !strcmp( psz_cmd, "title_p" ) )
    {
        if( !strcmp( psz_cmd, "title" ) )
        {
            if ( *newval.psz_string )
            {
                /* Set. */
                val.i_int = atoi( newval.psz_string );
                var_Set( p_input, "title", val );
            }
            else
            {
                vlc_value_t val_list;

                /* Get. */
                var_Get( p_input, "title", &val );
                var_Change( p_input, "title", VLC_VAR_GETCHOICES, &val_list, NULL );
                printf( "Currently playing title %d/%d\n", val.i_int, val_list.p_list->i_count );
                var_Change( p_this, "title", VLC_VAR_FREELIST, &val_list, NULL );
            }
        }
        else if( !strcmp( psz_cmd, "title_n" ) )
        {
            val.b_bool = VLC_TRUE;
            var_Set( p_input, "next-title", val );
        }
        else if( !strcmp( psz_cmd, "title_p" ) )
        {
            val.b_bool = VLC_TRUE;
            var_Set( p_input, "prev-title", val );
        }

        vlc_object_release( p_input );
        return VLC_SUCCESS;
    }

    /* Never reached. */
    return VLC_EGENERIC;
}

static int Playlist( vlc_object_t *p_this, char const *psz_cmd,
                     vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    playlist_t *     p_playlist;

    p_playlist = vlc_object_find( p_this, VLC_OBJECT_PLAYLIST,
                                           FIND_ANYWHERE );
    if( !p_playlist )
    {
        return VLC_ENOOBJ;
    }

    /* Parse commands that require a playlist */
    if( !strcmp( psz_cmd, "prev" ) )
    {
        playlist_Prev( p_playlist );
    }
    else if( !strcmp( psz_cmd, "next" ) )
    {
        playlist_Next( p_playlist );
    }
    else if( !strcmp( psz_cmd, "play" ) )
    {
        playlist_Play( p_playlist );
    }
    else if( !strcmp( psz_cmd, "stop" ) )
    {
        playlist_Stop( p_playlist );
    }
    else if( !strcmp( psz_cmd, "add" ) )
    {
        printf( "trying to add %s to playlist\n", newval.psz_string );
        playlist_Add( p_playlist, newval.psz_string, newval.psz_string,
                      PLAYLIST_GO|PLAYLIST_APPEND, PLAYLIST_END );
    }
    else if( !strcmp( psz_cmd, "playlist" ) )
    {
        int i;
        for ( i = 0; i < p_playlist->i_size; i++ )
        {
            printf( "|%s%s   %s|\n", i == p_playlist->i_index?"*":" ",
                    p_playlist->pp_items[i]->psz_name,
                    p_playlist->pp_items[i]->psz_uri );
        }
        if ( i == 0 )
        {
            printf( "| no entries\n" );
        }
    }
    /*
     * sanity check
     */
    else
    {
        printf( "unknown command!\n" );
    }

    vlc_object_release( p_playlist );
    return VLC_SUCCESS;
}

static int Quit( vlc_object_t *p_this, char const *psz_cmd,
                 vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    p_this->p_vlc->b_die = VLC_TRUE;
    return VLC_SUCCESS;
}

static int Intf( vlc_object_t *p_this, char const *psz_cmd,
                 vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    intf_thread_t *p_newintf;

    p_newintf = intf_Create( p_this->p_vlc, newval.psz_string );

    if( p_newintf )
    {
        p_newintf->b_block = VLC_FALSE;
        if( intf_RunThread( p_newintf ) )
        {
            vlc_object_detach( p_newintf );
            intf_Destroy( p_newintf );
        }
    }

    return VLC_SUCCESS;
}

static int Volume( vlc_object_t *p_this, char const *psz_cmd,
                   vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    int i_error;

    if ( *newval.psz_string )
    {
        /* Set. */
        audio_volume_t i_volume = atoi( newval.psz_string );
        if ( i_volume > AOUT_VOLUME_MAX )
        {
            printf( "Volume must be in the range %d-%d\n", AOUT_VOLUME_MIN,
                    AOUT_VOLUME_MAX );
            i_error = VLC_EBADVAR;
        }
        else i_error = aout_VolumeSet( p_this, i_volume );
    }
    else
    {
        /* Get. */
        audio_volume_t i_volume;
        if ( aout_VolumeGet( p_this, &i_volume ) < 0 )
        {
            i_error = VLC_EGENERIC;
        }
        else
        {
            printf( "Volume is %d\n", i_volume );
            i_error = VLC_SUCCESS;
        }
    }

    return i_error;
}

static int VolumeMove( vlc_object_t *p_this, char const *psz_cmd,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    audio_volume_t i_volume;
    int i_nb_steps = atoi(newval.psz_string);
    int i_error = VLC_SUCCESS;

    if ( i_nb_steps <= 0 || i_nb_steps > (AOUT_VOLUME_MAX/AOUT_VOLUME_STEP) )
    {
        i_nb_steps = 1;
    }

    if ( !strcmp(psz_cmd, "volup") )
    {
        if ( aout_VolumeUp( p_this, i_nb_steps, &i_volume ) < 0 )
            i_error = VLC_EGENERIC;
    }
    else
    {
        if ( aout_VolumeDown( p_this, i_nb_steps, &i_volume ) < 0 )
            i_error = VLC_EGENERIC;
    }

    if ( !i_error ) printf( "Volume is %d\n", i_volume );
    return i_error;
}

static int AudioConfig( vlc_object_t *p_this, char const *psz_cmd,
                        vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    aout_instance_t * p_aout;
    const char * psz_variable;
    vlc_value_t val_name;
    int i_error;

    p_aout = vlc_object_find( p_this, VLC_OBJECT_AOUT, FIND_ANYWHERE );
    if ( p_aout == NULL ) return VLC_ENOOBJ;

    if ( !strcmp( psz_cmd, "adev" ) )
    {
        psz_variable = "audio-device";
    }
    else
    {
        psz_variable = "audio-channels";
    }

    /* Get the descriptive name of the variable */
    var_Change( (vlc_object_t *)p_aout, psz_variable, VLC_VAR_GETTEXT,
                 &val_name, NULL );
    if( !val_name.psz_string ) val_name.psz_string = strdup(psz_variable);

    if ( !*newval.psz_string )
    {
        /* Retrieve all registered ***. */
        vlc_value_t val, text;
        int i, i_value;

        if ( var_Get( (vlc_object_t *)p_aout, psz_variable, &val ) < 0 )
        {
            vlc_object_release( (vlc_object_t *)p_aout );
            return VLC_EGENERIC;
        }
        i_value = val.i_int;

        if ( var_Change( (vlc_object_t *)p_aout, psz_variable,
                         VLC_VAR_GETLIST, &val, &text ) < 0 )
        {
            vlc_object_release( (vlc_object_t *)p_aout );
            return VLC_EGENERIC;
        }

        printf( "+----[ %s ]\n", val_name.psz_string );
        for ( i = 0; i < val.p_list->i_count; i++ )
        {
            if ( i_value == val.p_list->p_values[i].i_int )
                printf( "| %i - %s *\n", val.p_list->p_values[i].i_int,
                        text.p_list->p_values[i].psz_string );
            else
                printf( "| %i - %s\n", val.p_list->p_values[i].i_int,
                        text.p_list->p_values[i].psz_string );
        }
        var_Change( (vlc_object_t *)p_aout, psz_variable, VLC_VAR_FREELIST,
                    &val, &text );
        printf( "+----[ end of %s ]\n", val_name.psz_string );

        if( val_name.psz_string ) free( val_name.psz_string );
        i_error = VLC_SUCCESS;
    }
    else
    {
        vlc_value_t val;
        val.i_int = atoi( newval.psz_string );

        i_error = var_Set( (vlc_object_t *)p_aout, psz_variable, val );
    }
    vlc_object_release( (vlc_object_t *)p_aout );

    return i_error;
}