playlistinfo.m

VLC Player Source Code

/*****************************************************************************
 r playlistinfo.m: MacOS X interface module
 *****************************************************************************
 * Copyright (C) 2002-2008 the VideoLAN team
 * $Id$
 *
 * Authors: Benjamin Pracht <bigben at videolan dot org>
 *          Felix Paul Kühne <fkuehne at videolan dot org>
 *
 * 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 2 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 Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/

#include "intf.h"
#include "playlistinfo.h"
#include "playlist.h"

/*****************************************************************************
 * VLCPlaylistInfo Implementation
 *****************************************************************************/

@implementation VLCInfo

static VLCInfo *_o_sharedInstance = nil;

+ (VLCInfo *)sharedInstance
{
    return _o_sharedInstance ? _o_sharedInstance : [[self alloc] init];
}

- (id)init
{
    if( _o_sharedInstance ) {
        [self dealloc];
    } else {
        _o_sharedInstance = [super init];
        
        if( _o_sharedInstance != nil )
        {
            p_item = NULL;
            o_statUpdateTimer = nil;
            [self updatePanelWithItem: NULL];
            rootItem = [[VLCInfoTreeItem alloc] init];
        }
    }

    return _o_sharedInstance;
}

- (void)awakeFromNib
{
    [o_info_window setExcludedFromWindowsMenu: YES];
    [o_info_window setFloatingPanel: NO];

    [o_info_window setTitle: _NS("Media Information")];
    [o_uri_lbl setStringValue: _NS("Location")];
    [o_title_lbl setStringValue: _NS("Title")];
    [o_author_lbl setStringValue: _NS("Artist")];
    [o_saveMetaData_btn setStringValue: _NS("Save Metadata" )];

    [[o_tab_view tabViewItemAtIndex: 0] setLabel: _NS("General")];
    [[o_tab_view tabViewItemAtIndex: 1] setLabel: _NS("Codec Details")];
    [[o_tab_view tabViewItemAtIndex: 2] setLabel: _NS("Statistics")];
    [o_tab_view selectTabViewItemAtIndex: 0];

    /* constants defined in vlc_meta.h */
    [o_genre_lbl setStringValue: _NS(VLC_META_GENRE)];
    [o_copyright_lbl setStringValue: _NS(VLC_META_COPYRIGHT)];
    [o_collection_lbl setStringValue: _NS(VLC_META_ALBUM)];
    [o_seqNum_lbl setStringValue: _NS(VLC_META_TRACK_NUMBER)];
    [o_description_lbl setStringValue: _NS(VLC_META_DESCRIPTION)];
    [o_date_lbl setStringValue: _NS(VLC_META_DATE)];
    [o_language_lbl setStringValue: _NS(VLC_META_LANGUAGE)];
    [o_nowPlaying_lbl setStringValue: _NS(VLC_META_NOW_PLAYING)];
    [o_publisher_lbl setStringValue: _NS(VLC_META_PUBLISHER)];

    /* statistics */
    [o_input_box setTitle: _NS("Input")];
    [o_read_bytes_lbl setStringValue: _NS("Read at media")];
    [o_input_bitrate_lbl setStringValue: _NS("Input bitrate")];
    [o_demux_bytes_lbl setStringValue: _NS("Demuxed")];
    [o_demux_bitrate_lbl setStringValue: _NS("Stream bitrate")];

    [o_video_box setTitle: _NS("Video")];
    [o_video_decoded_lbl setStringValue: _NS("Decoded blocks")];
    [o_displayed_lbl setStringValue: _NS("Displayed frames")];
    [o_lost_frames_lbl setStringValue: _NS("Lost frames")];
	[o_fps_lbl setStringValue: _NS("Frames per Second")];

    [o_sout_box setTitle: _NS("Streaming")];
    [o_sent_packets_lbl setStringValue: _NS("Sent packets")];
    [o_sent_bytes_lbl setStringValue: _NS("Sent bytes")];
    [o_sent_bitrate_lbl setStringValue: _NS("Send rate")];

    [o_audio_box setTitle: _NS("Audio")];
    [o_audio_decoded_lbl setStringValue: _NS("Decoded blocks")];
    [o_played_abuffers_lbl setStringValue: _NS("Played buffers")];
    [o_lost_abuffers_lbl setStringValue: _NS("Lost buffers")];

    [o_info_window setInitialFirstResponder: o_uri_txt];
    [o_info_window setDelegate: self];

    /* We may be awoken from nib way after initialisation
     * Update ourselves */
    [self updatePanelWithItem:p_item];
}

- (void)stopTimers
{
    /* make sure that the timer is released in any case */
    if( o_statUpdateTimer && [o_statUpdateTimer isValid] )
        [o_statUpdateTimer invalidate];

    [rootItem release];

    [o_statUpdateTimer release];
    o_statUpdateTimer = nil;
}

- (void)dealloc
{
    /* make sure that the timer is released in any case */
    if( o_statUpdateTimer && [o_statUpdateTimer isValid] )
        [o_statUpdateTimer invalidate];

    [o_statUpdateTimer release];

    if( p_item ) vlc_gc_decref( p_item );

    [super dealloc];
}

- (void)windowDidBecomeKey:(NSNotification *)notification
{
    BOOL b_stats = config_GetInt(VLCIntf, "stats");
    if( b_stats )
    {
        if( o_statUpdateTimer )
        {
            [o_statUpdateTimer invalidate];
            [o_statUpdateTimer release];
            o_statUpdateTimer = nil;
        }
        o_statUpdateTimer = [NSTimer scheduledTimerWithTimeInterval: 1
            target: self selector: @selector(updateStatistics:)
            userInfo: nil repeats: YES];
        [o_statUpdateTimer fire];
        [o_statUpdateTimer retain];
    }
}

- (BOOL)windowShouldClose:(id)sender
{
    if( [o_statUpdateTimer isValid] )
        [o_statUpdateTimer invalidate];

    if( o_statUpdateTimer )
        [o_statUpdateTimer release];
    o_statUpdateTimer = nil;
    return YES;
}

- (void)initPanel
{
    BOOL b_stats = config_GetInt(VLCIntf, "stats");
    if( !b_stats )
    {
        if( [o_tab_view numberOfTabViewItems] > 2 )
            [o_tab_view removeTabViewItem: [o_tab_view tabViewItemAtIndex: 2]];
    }

    [self initMediaPanelStats];
    [o_info_window makeKeyAndOrderFront: self];
}

- (void)initMediaPanelStats
{
    //Initializing Input Variables
    [o_read_bytes_txt setStringValue: [NSString stringWithFormat:@"%8.0f kB", (float)0]];
    [o_input_bitrate_txt setStringValue: [NSString stringWithFormat:@"%6.0f kb/s", (float)0]];
    [o_demux_bytes_txt setStringValue: [NSString stringWithFormat:@"%8.0f kB", (float)0]];
    [o_demux_bitrate_txt setStringValue: [NSString stringWithFormat:@"%6.0f kb/s", (float)0]];
    
    //Initializing Video Variables
    [o_video_decoded_txt setIntValue:0];
    [o_displayed_txt setIntValue:0];
    [o_lost_frames_txt setIntValue:0];
    [o_fps_txt setFloatValue:0];

    //Initializing Output Variables
    [o_sent_packets_txt setIntValue: 0];
    [o_sent_bytes_txt setStringValue: [NSString stringWithFormat:@"%8.0f kB", (float)0]];
    [o_sent_bitrate_txt setStringValue: [NSString stringWithFormat:@"%6.0f kb/s", (float)0]];

    //Initializing Audio Variables
    [o_audio_decoded_txt setIntValue:0];
    [o_played_abuffers_txt setIntValue: 0];
    [o_lost_abuffers_txt setIntValue: 0];

}

- (void)updatePanelWithItem:(input_item_t *)_p_item;
{
    if( _p_item != p_item )
    {
        if( p_item ) vlc_gc_decref( p_item );
        [o_saveMetaData_btn setEnabled: NO];
        if( _p_item ) vlc_gc_incref( _p_item );
        p_item = _p_item;
    }

    if( !p_item )
    {
        /* Erase */
    #define SET( foo ) \
        [self setMeta: "" forLabel: o_##foo##_txt];
        SET( uri );
        SET( title );
        SET( author );
        SET( collection );
        SET( seqNum );
        SET( genre );
        SET( copyright );
        SET( publisher );
        SET( nowPlaying );
        SET( language );
        SET( date );
        SET( description );
    #undef SET
        [o_image_well setImage: [NSImage imageNamed: @"noart.png"]];
    }
    else
    {
        if( !input_item_IsPreparsed( p_item ) )
        {
            playlist_t * p_playlist = pl_Yield( VLCIntf );
            playlist_PreparseEnqueue( p_playlist, p_item );
            pl_Release( VLCIntf );
        }

        /* fill uri info */
        char * psz_url = input_item_GetURI( p_item );
        [o_uri_txt setStringValue: [NSString stringWithUTF8String: psz_url ? psz_url : ""  ]];
        free( psz_url );

        /* fill title info */
        char * psz_title = input_item_GetTitle( p_item );
        if( !psz_title )
            psz_title = input_item_GetName( p_item );
        [o_title_txt setStringValue: [NSString stringWithUTF8String: psz_title ? : ""  ]];
        free( psz_title );

    #define SET( foo, bar ) \
        char *psz_##foo = input_item_Get##bar ( p_item ); \
        [self setMeta: psz_##foo forLabel: o_##foo##_txt]; \
        FREENULL( psz_##foo );

        /* fill the other fields */
        SET( author, Artist );
        SET( collection, Album );
        SET( seqNum, TrackNum );
        SET( genre, Genre );
        SET( copyright, Copyright );
        SET( publisher, Publisher );
        SET( nowPlaying, NowPlaying );
        SET( language, Language );
        SET( date, Date );
        SET( description, Description );

    #undef SET

        char *psz_meta;
        NSImage *o_image;
        psz_meta = input_item_GetArtURL( p_item );
        if( psz_meta && !strncmp( psz_meta, "file://", 7 ) )
            o_image = [[NSImage alloc] initWithContentsOfFile: [NSString stringWithUTF8String: psz_meta+7]];
        else
            o_image = [[NSImage imageNamed: @"noart.png"] retain];
        [o_image_well setImage: o_image];
        [o_image release];
        FREENULL( psz_meta );
    }

    /* reload the advanced table */