playlistinfo.m

uclinux 下的vlc播放器源代码

/*****************************************************************************
 r playlistinfo.m: MacOS X interface module
 *****************************************************************************
 * Copyright (C) 2002-2006 the VideoLAN team
 * $Id: playlistinfo.m 14929 2006-03-25 18:54:58Z fkuehne $
 *
 * Authors: Benjamin Pracht <bigben at videolan dot org>
 *          Felix 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

- (id)init
{
    self = [super init];

    if( self != nil )
    {
        p_item = NULL;
        o_statUpdateTimer = nil;
    }
    return( self );
}

- (void)awakeFromNib
{
    [o_info_window setExcludedFromWindowsMenu: TRUE];

    [o_info_window setTitle: _NS("Information")];
    [o_uri_lbl setStringValue: _NS("URI")];
    [o_title_lbl setStringValue: _NS("Title")];
    [o_author_lbl setStringValue: _NS("Author")];
    [o_btn_ok setTitle: _NS("OK")];
    [o_btn_cancel setTitle: _NS("Cancel")];
    
    [[o_tab_view tabViewItemAtIndex: 0] setLabel: _NS("General")];
    [[o_tab_view tabViewItemAtIndex: 1] setLabel: _NS("Advanced Information")];
    [[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_COLLECTION)];
    [o_seqNum_lbl setStringValue: _NS(VLC_META_SEQ_NUM)];
    [o_description_lbl setStringValue: _NS(VLC_META_DESCRIPTION)];
    [o_rating_lbl setStringValue: _NS(VLC_META_RATING)];
    [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_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")];
}

- (void)dealloc
{
    /* make sure that it is released in any case */
    if ( o_statUpdateTimer )
        [o_statUpdateTimer release];
    [super dealloc];
}

- (IBAction)togglePlaylistInfoPanel:(id)sender
{
    if( [o_info_window isVisible] )
    {
        [self windowShouldClose: nil];
        [o_info_window orderOut: sender];
    }
    else
    {
        p_item = [[[VLCMain sharedInstance] getPlaylist] selectedPlaylistItem];
        [self initPanel:sender];
    }
}

- (IBAction)toggleInfoPanel:(id)sender
{
    if( [o_info_window isVisible] )
    {
        [self windowShouldClose: nil];
        [o_info_window orderOut: sender];
    }
    else
    {
        intf_thread_t * p_intf = VLCIntf;
        playlist_t * p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
                                          FIND_ANYWHERE );

        if( p_playlist )
        {
            p_item = p_playlist->status.p_item;
            vlc_object_release( p_playlist );
        }

        BOOL b_stats = config_GetInt(VLCIntf, "stats");
        if( b_stats )
        {
            o_statUpdateTimer = [NSTimer scheduledTimerWithTimeInterval: 1 \
                target: self selector: @selector(updateStatistics:) \
                userInfo: nil repeats: YES]; 
            [o_statUpdateTimer fire];
            [o_statUpdateTimer retain];
        }
        else
        {
            if( [o_tab_view numberOfTabViewItems] > 2 )
            [o_tab_view removeTabViewItem: [o_tab_view tabViewItemAtIndex: 2]];
        }

        [self initPanel:sender];
    }
}

- (void)initPanel:(id)sender
{
    [self updatePanel];
    [o_info_window makeKeyAndOrderFront: sender];
}

- (void)updatePanel
{
    /* make sure that we got the current item and not an outdated one */
    intf_thread_t * p_intf = VLCIntf;
        playlist_t * p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST,
                                          FIND_ANYWHERE );

    if( p_playlist )
    {
        p_item = p_playlist->status.p_item;
        vlc_object_release( p_playlist );
    }

    /* check whether our item is valid, because we would crash if not */
    if(! [self isItemInPlaylist: p_item] ) return;

    char *psz_temp;
    vlc_mutex_lock( &p_item->input.lock );

    /* fill uri / title / author info */
    if( p_item->input.psz_uri )
    {
        [o_uri_txt setStringValue:
            ([NSString stringWithUTF8String:p_item->input.psz_uri] == nil ) ?
            [NSString stringWithCString:p_item->input.psz_uri] :
            [NSString stringWithUTF8String:p_item->input.psz_uri]];
    }

    if( p_item->input.psz_name )
    {
        [o_title_txt setStringValue:
            ([NSString stringWithUTF8String:p_item->input.psz_name] == nil ) ?
            [NSString stringWithCString:p_item->input.psz_name] :
            [NSString stringWithUTF8String:p_item->input.psz_name]];
    }
    vlc_mutex_unlock( &p_item->input.lock );

    psz_temp = vlc_input_item_GetInfo( &p_item->input, _("Meta-information"), _("Artist") );

    if( psz_temp )
    {
        [o_author_txt setStringValue: [NSString stringWithUTF8String: psz_temp]];
        free( psz_temp );
    }

    /* fill the other fields */
    [self setMeta: VLC_META_GENRE forLabel: o_genre_txt];
    [self setMeta: VLC_META_COPYRIGHT forLabel: o_copyright_txt];
    [self setMeta: VLC_META_COLLECTION forLabel: o_collection_txt];
    [self setMeta: VLC_META_SEQ_NUM forLabel: o_seqNum_txt];
    [self setMeta: VLC_META_DESCRIPTION forLabel: o_description_txt];
    [self setMeta: VLC_META_RATING forLabel: o_rating_txt];
    [self setMeta: VLC_META_DATE forLabel: o_date_txt];
    [self setMeta: VLC_META_LANGUAGE forLabel: o_language_txt];
    [self setMeta: VLC_META_NOW_PLAYING forLabel: o_nowPlaying_txt];
    [self setMeta: VLC_META_PUBLISHER forLabel: o_publisher_txt];

    /* reload the advanced table */
    [[VLCInfoTreeItem rootItem] refresh];
    [o_outline_view reloadData];

    /* update the stats once to display p_item change faster */
    [self updateStatistics: nil];
}

- (void)setMeta: (char *)meta forLabel: (id)theItem
{
    char *psz_meta = vlc_input_item_GetInfo( &p_item->input, \
        _(VLC_META_INFO_CAT), _(meta) );
    if( psz_meta != NULL && *psz_meta)
        [theItem setStringValue: [NSString stringWithUTF8String: psz_meta]];
    else
        [theItem setStringValue: @"-"];
}

- (void)updateStatistics:(NSTimer*)theTimer
{
    if( [self isItemInPlaylist: p_item] )
    {
        /* we can only do that if there's a valid input around */

        vlc_mutex_lock( &p_item->input.p_stats->lock );

        /* input */
        [o_read_bytes_txt setStringValue: [NSString stringWithFormat: \
            @"%8.0f kB", (float)(p_item->input.p_stats->i_read_bytes)/1000]];
        [o_input_bitrate_txt setStringValue: [NSString stringWithFormat: \
            @"%6.0f kb/s", (float)(p_item->input.p_stats->f_input_bitrate)*8000]];
        [o_demux_bytes_txt setStringValue: [NSString stringWithFormat: \
            @"%8.0f kB", (float)(p_item->input.p_stats->i_demux_read_bytes)/1000]];
        [o_demux_bitrate_txt setStringValue: [NSString stringWithFormat: \
            @"%6.0f kb/s", (float)(p_item->input.p_stats->f_demux_bitrate)*8000]];

        /* Video */
        [o_video_decoded_txt setStringValue: [NSString stringWithFormat: @"%5i", \
            p_item->input.p_stats->i_decoded_video]];
        [o_displayed_txt setStringValue: [NSString stringWithFormat: @"%5i", \
            p_item->input.p_stats->i_displayed_pictures]];
        [o_lost_frames_txt setStringValue: [NSString stringWithFormat: @"%5i", \
            p_item->input.p_stats->i_lost_pictures]];

        /* Sout */
        [o_sent_packets_txt setStringValue: [NSString stringWithFormat: @"%5i", \
            p_item->input.p_stats->i_sent_packets]];