mediacontrol-core.c

video linux conference

    }

    playlist_Stop( self->p_playlist );
}

void
mediacontrol_playlist_add_item( mediacontrol_Instance *self,
                                const char * psz_file,
                                mediacontrol_Exception *exception )
{
    exception=mediacontrol_exception_init( exception );
    if( !self->p_playlist )
    {
        RAISE( mediacontrol_InternalException, "No playlist" );
        return;
    }

    playlist_Add( self->p_playlist, psz_file, psz_file , PLAYLIST_REPLACE, 0 );
}

void
mediacontrol_playlist_clear( mediacontrol_Instance *self,
                             mediacontrol_Exception *exception )
{
    exception=mediacontrol_exception_init( exception );
    if( !self->p_playlist )
    {
        RAISE( mediacontrol_PlaylistException, "No playlist" );
        return;
    }

    playlist_Clear( self->p_playlist );

    return;
}

mediacontrol_PlaylistSeq *
mediacontrol_playlist_get_list( mediacontrol_Instance *self,
                                mediacontrol_Exception *exception )
{
    mediacontrol_PlaylistSeq *retval;
    int i_index;
    playlist_t * p_playlist = self->p_playlist;;
    int i_playlist_size;

    exception=mediacontrol_exception_init( exception );
    if( !p_playlist )
    {
        RAISE( mediacontrol_PlaylistException, "No playlist" );
        return NULL;
    }

    vlc_mutex_lock( &p_playlist->object_lock );
    i_playlist_size = p_playlist->i_size;

    retval = mediacontrol_PlaylistSeq__alloc( i_playlist_size );

    for( i_index = 0 ; i_index < i_playlist_size ; i_index++ )
    {
        retval->data[i_index] = strdup( p_playlist->pp_items[i_index]->input.psz_uri );
    }
    vlc_mutex_unlock( &p_playlist->object_lock );

    return retval;
}

mediacontrol_RGBPicture*
_mediacontrol_createRGBPicture( int i_width, int i_height, long i_chroma, long long l_date,
                                char* p_data, int i_datasize )
{
    mediacontrol_RGBPicture *retval;

    retval = mediacontrol_RGBPicture__alloc( i_datasize );
    if( retval )
    {
        retval->width  = i_width;
        retval->height = i_height;
        retval->type   = i_chroma;
        retval->date   = l_date;
        retval->size   = i_datasize;
        memcpy( retval->data, p_data, i_datasize );
    }
    return retval;
}

mediacontrol_RGBPicture *
mediacontrol_snapshot( mediacontrol_Instance *self,
                       const mediacontrol_Position * a_position,
                       mediacontrol_Exception *exception )
{
    mediacontrol_RGBPicture *retval = NULL;
    input_thread_t* p_input = self->p_playlist->p_input;
    vout_thread_t *p_vout = NULL;
    int i_datasize;
    snapshot_t **pointer;
    vlc_value_t val;
    int i_index;
    snapshot_t *p_best_snapshot;
    long searched_date;
#ifdef HAS_SNAPSHOT
    int i_cachesize;
#endif

    exception=mediacontrol_exception_init( exception );

    /*
       if( var_Get( self->p_vlc, "snapshot-id", &val ) == VLC_SUCCESS )
       p_vout = vlc_object_get( self->p_vlc, val.i_int );
    */

    /* FIXME: if in p_libvlc, we cannot have multiple video outputs */
    /* Once corrected, search for snapshot-id to modify all instances */
    if( var_Get( p_input, "snapshot-id", &val ) != VLC_SUCCESS )
    {
        RAISE( mediacontrol_InternalException, "No snapshot-id in p_input" );
        return NULL;
    }
    p_vout = vlc_object_get( self->p_vlc, val.i_int );

    if( ! p_vout )
    {
        RAISE( mediacontrol_InternalException, "No snapshot module" );
        return NULL;
    }

#ifdef HAS_SNAPSHOT
    /* We test if the vout is a snapshot module. We cannot test
       pvout_psz_object_name( which is NULL ). But we can check if
       there are snapshot-specific variables */
    if( var_Get( p_vout, "snapshot-datasize", &val ) != VLC_SUCCESS )
    {
        RAISE( mediacontrol_InternalException, "No snapshot module" );
        vlc_object_release( p_vout );
        return NULL;
    }
    i_datasize = val.i_int;

    /* Handle the a_position parameter */
    if( ! ( a_position->origin == mediacontrol_RelativePosition
            && a_position->value == 0 ) )
    {
        /* The position is not the current one. Go to it. */
        mediacontrol_set_media_position( self,
                                         ( mediacontrol_Position* ) a_position,
                                         exception );
        if( exception->code )
        {
            vlc_object_release( p_vout );
            return NULL;
        }
    }

    /* FIXME: We should not go further until we got past the position
       ( which means that we had the possibility to capture the right
       picture ). */

    vlc_mutex_lock( &p_vout->picture_lock );

    searched_date = mediacontrol_position2microsecond( p_input,
                                                       ( mediacontrol_Position * ) a_position );

    var_Get( p_vout, "snapshot-cache-size", &val );
    i_cachesize = val.i_int  ;

    var_Get( p_vout, "snapshot-list-pointer", &val );
    pointer = ( snapshot_t ** )val.p_address;

    if( ! pointer )
    {
        RAISE( mediacontrol_InternalException, "No available snapshot" );

        vlc_mutex_unlock( &p_vout->picture_lock );
        vlc_object_release( p_vout );
        return NULL;
    }

    /* Find the more appropriate picture, based on date */
    p_best_snapshot = pointer[0];

    for( i_index = 1 ; i_index < i_cachesize ; i_index++ )
    {
        long l_diff = pointer[i_index]->date - searched_date;
        if( l_diff > 0 && l_diff < abs( p_best_snapshot->date - searched_date ))
        {
            /* This one is closer, and _after_ the requested position */
            p_best_snapshot = pointer[i_index];
        }
    }

    /* FIXME: add a test for the case that no picture matched the test
       ( we have p_best_snapshot == pointer[0] */
    retval = _mediacontrol_createRGBPicture( p_best_snapshot->i_width,
                                             p_best_snapshot->i_height,
                                             p_vout->output.i_chroma,
                                             p_best_snapshot->date,
                                             p_best_snapshot->p_data,
                                             i_datasize );

    vlc_mutex_unlock( &p_vout->picture_lock );
    vlc_object_release( p_vout );

#endif

    return retval;
}

mediacontrol_RGBPicture **
mediacontrol_all_snapshots( mediacontrol_Instance *self,
                            mediacontrol_Exception *exception )
{
    mediacontrol_RGBPicture **retval = NULL;
    vout_thread_t *p_vout = NULL;
    int i_datasize;
    int i_cachesize;
    vlc_value_t val;
    int i_index;
#ifdef HAS_SNAPSHOT
    snapshot_t **pointer;
#endif

    exception=mediacontrol_exception_init( exception );

    if( var_Get( self->p_playlist->p_input, "snapshot-id", &val ) == VLC_SUCCESS )
        p_vout = vlc_object_get( self->p_vlc, val.i_int );

    if( ! p_vout )
    {
        RAISE( mediacontrol_InternalException, "No snapshot module" );
        return NULL;
    }
#ifdef HAS_SNAPSHOT
    /* We test if the vout is a snapshot module. We cannot test
       pvout_psz_object_name( which is NULL ). But we can check if
       there are snapshot-specific variables */
    if( var_Get( p_vout, "snapshot-datasize", &val ) != VLC_SUCCESS )
    {
        RAISE( mediacontrol_InternalException, "No snapshot module" );
        vlc_object_release( p_vout );
        return NULL;
    }
    i_datasize = val.i_int;

    vlc_mutex_lock( &p_vout->picture_lock );

    var_Get( p_vout, "snapshot-cache-size", &val );
    i_cachesize = val.i_int  ;

    var_Get( p_vout, "snapshot-list-pointer", &val );
    pointer = ( snapshot_t ** )val.p_address;

    if( ! pointer )
    {
        RAISE( mediacontrol_InternalException, "No available picture" );

        vlc_mutex_unlock( &p_vout->picture_lock );
        vlc_object_release( p_vout );
        return NULL;
    }

    retval = ( mediacontrol_RGBPicture** )malloc( (i_cachesize + 1 ) * sizeof( char* ));

    for( i_index = 0 ; i_index < i_cachesize ; i_index++ )
    {
        snapshot_t *p_s = pointer[i_index];
        mediacontrol_RGBPicture *p_rgb;

        p_rgb = _mediacontrol_createRGBPicture( p_s->i_width,
                                                p_s->i_height,
                                                p_vout->output.i_chroma,
                                                p_s->date,
                                                p_s->p_data,
                                                i_datasize );

        retval[i_index] = p_rgb;
    }

    retval[i_cachesize] = NULL;

    vlc_mutex_unlock( &p_vout->picture_lock );
    vlc_object_release( p_vout );

#endif

    return retval;
}

void
mediacontrol_display_text( mediacontrol_Instance *self,
                           const char * message,
                           const mediacontrol_Position * begin,
                           const mediacontrol_Position * end,
                           mediacontrol_Exception *exception )
{
    input_thread_t *p_input = NULL;
    vout_thread_t *p_vout = NULL;

    p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
    if( ! p_vout )
    {
        RAISE( mediacontrol_InternalException, "No video output" );
        return;
    }

    if( begin->origin == mediacontrol_RelativePosition &&
        begin->value == 0 &&
        end->origin == mediacontrol_RelativePosition )
    {
        mtime_t i_duration = 0;

        i_duration = 1000 * mediacontrol_unit_convert( self->p_playlist->p_input,
                                                       end->key,
                                                       mediacontrol_MediaTime,
                                                       end->value );

        vout_ShowTextRelative( p_vout, DEFAULT_CHAN, ( char* ) message, NULL,
                               OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 20, 20,
                               i_duration );
    }
    else
    {
        mtime_t i_debut, i_fin, i_now;

        p_input = self->p_playlist->p_input;
        if( ! p_input )
        {
            RAISE( mediacontrol_InternalException, "No input" );
            vlc_object_release( p_vout );
            return;
        }

        /* FIXME */
        /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
        i_now = 0;
        
        i_debut = mediacontrol_position2microsecond( p_input,
                                                     ( mediacontrol_Position* ) begin );
        i_debut += i_now;

        i_fin = mediacontrol_position2microsecond( p_input,
                                                   ( mediacontrol_Position * ) end );
        i_fin += i_now;

        vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, ( char* ) message, NULL,
                               OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 20, 20,
                               i_debut, i_fin );
    }

    vlc_object_release( p_vout );
}

mediacontrol_StreamInformation *
mediacontrol_get_stream_information( mediacontrol_Instance *self,
                                     mediacontrol_PositionKey a_key,
                                     mediacontrol_Exception *exception )
{
    mediacontrol_StreamInformation *retval;
    input_thread_t *p_input = self->p_playlist->p_input;
    vlc_value_t val;

    retval = ( mediacontrol_StreamInformation* )malloc( sizeof( mediacontrol_StreamInformation ) );
    if( ! retval )
    {
        RAISE( mediacontrol_InternalException, "Out of memory" );
        return NULL;
    }

    if( ! p_input )
    {
        /* No p_input defined */
        retval->streamstatus = mediacontrol_UndefinedStatus;
        retval->url          = strdup( "None" );
        retval->position     = 0;
        retval->length       = 0;
    }
    else
    {
        switch( var_GetInteger( p_input, "state" ) )
        {
        case PLAYING_S     :
            retval->streamstatus = mediacontrol_PlayingStatus;
            break;
        case PAUSE_S       :
            retval->streamstatus = mediacontrol_PauseStatus;
            break;
        case INIT_S        :
            retval->streamstatus = mediacontrol_InitStatus;
            break;
        case END_S         :
            retval->streamstatus = mediacontrol_EndStatus;
            break;
        default :
            retval->streamstatus = mediacontrol_UndefinedStatus;
            break;
        }

        retval->url = strdup( p_input->input.p_item->psz_uri );

        /* TIME and LENGTH are in microseconds. We want them in ms */
        var_Get( p_input, "time", &val);
        retval->position = val.i_time / 1000;

        var_Get( p_input, "length", &val);
        retval->length = val.i_time / 1000;

        retval->position = mediacontrol_unit_convert( p_input,
                                                      mediacontrol_MediaTime, a_key,
                                                      retval->position );
        retval->length   = mediacontrol_unit_convert( p_input,
                                                      mediacontrol_MediaTime, a_key,
                                                      retval->length );
    }
    return retval;
}

unsigned short
mediacontrol_sound_get_volume( mediacontrol_Instance *self,
                               mediacontrol_Exception *exception )
{
    short retval;
    audio_volume_t i_volume;

    if( !self->p_intf )
    {
        RAISE( mediacontrol_InternalException, "No interface module" );
        return 0;
    }
    aout_VolumeGet( self->p_intf, &i_volume );
    retval = i_volume;
    return retval;
}

void
mediacontrol_sound_set_volume( mediacontrol_Instance *self,
                               const unsigned short volume,
                               mediacontrol_Exception *exception )
{
    if( !self->p_intf )
    {
        RAISE( mediacontrol_InternalException, "No interface module" );
        return;
    }
    aout_VolumeSet( self->p_intf,( audio_volume_t )volume );
}