pda_callbacks.c

VLC媒体播放程序

/*****************************************************************************
 * pda_callbacks.c : Callbacks for the pda Linux Gtk+ plugin.
 *****************************************************************************
 * Copyright (C) 2000, 2001 VideoLAN
 * $Id: pda_callbacks.c,v 1.29 2004/02/29 22:59:59 jpsaman Exp $
 *
 * Authors: Jean-Paul Saman <[e-mail]>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#include <sys/types.h>                                              /* off_t */
#include <stdlib.h>
#include <vlc/vlc.h>
#include <vlc/intf.h>
#include <vlc/vout.h>

#include <stdio.h>
#include <string.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>
#include <pwd.h>
#include <grp.h>

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

#include <gtk/gtk.h>

#include "pda_callbacks.h"
#include "pda_interface.h"
#include "pda_support.h"
#include "pda.h"

#define VLC_MAX_MRL     256

static char *get_file_perms(struct stat st);

/*****************************************************************************
 * Useful function to retrieve p_intf
 ****************************************************************************/
void * E_(__GtkGetIntf)( GtkWidget * widget )
{
    void *p_data;

    if( GTK_IS_MENU_ITEM( widget ) )
    {
        /* Look for a GTK_MENU */
        while( widget->parent && !GTK_IS_MENU( widget ) )
        {
            widget = widget->parent;
        }

        /* Maybe this one has the data */
        p_data = gtk_object_get_data( GTK_OBJECT( widget ), "p_intf" );
        if( p_data )
        {
            return p_data;
        }

        /* Otherwise, the parent widget has it */
        widget = gtk_menu_get_attach_widget( GTK_MENU( widget ) );
    }

    /* We look for the top widget */
    widget = gtk_widget_get_toplevel( GTK_WIDGET( widget ) );

    p_data = gtk_object_get_data( GTK_OBJECT( widget ), "p_intf" );

    return p_data;
}

void PlaylistAddItem(GtkWidget *widget, gchar *name, char **ppsz_options, int i_size)
{
    intf_thread_t *p_intf = GtkGetIntf( widget );
    playlist_t    *p_playlist;
    int           i_id , i_pos=0;
    GtkTreeView   *p_tvplaylist = NULL;

    p_playlist = (playlist_t *)
             vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );

    if( p_playlist ==  NULL)
    {   /* Bail out when VLC's playlist object is not found. */
        return;
    }

    /* Add to playlist object. */
    p_tvplaylist = (GtkTreeView *) lookup_widget( GTK_WIDGET(widget), "tvPlaylist");
    if (p_tvplaylist)
    {
        GtkTreeModel *p_play_model;
        GtkTreeIter   p_play_iter;

        p_play_model = gtk_tree_view_get_model(p_tvplaylist);
        
        if (p_play_model)
        {
            int i;

            /* Add a new row to the playlist treeview model */
            gtk_list_store_append (GTK_LIST_STORE(p_play_model), &p_play_iter);
            gtk_list_store_set (GTK_LIST_STORE(p_play_model), &p_play_iter,
                                    0, name,   /* Add path to it !!! */
                                    1, "no info",
                                    2, p_playlist->i_size, /* Hidden index. */
                                    -1 );

            /* Add to VLC's playlist */
#if 0
            if (p_intf->p_sys->b_autoplayfile)
            {
                playlist_Add( p_playlist, (const char*)name, (const char**)ppsz_options, i_size,
                              PLAYLIST_APPEND | PLAYLIST_GO, PLAYLIST_END);
            }
            else
#endif
            {
                i_id = playlist_AddExt( p_playlist, (const char*)name,
                              (const char*)name,
                              PLAYLIST_APPEND, PLAYLIST_END,
                              (mtime_t) 0,
                              (const char **) ppsz_options, i_pos );
            }

            /* Cleanup memory */
            for (i=0; i<i_size; i++)
                free(ppsz_options[i]);
            free(ppsz_options);
        }
    }
    vlc_object_release( p_playlist );
}

void PlaylistRebuildListStore( GtkListStore * p_list, playlist_t * p_playlist )
{
    GtkTreeIter iter;
    int         i_dummy;
    gchar *     ppsz_text[2];
#if 0
    GdkColor    red;
    red.red     = 65535;
    red.blue    = 0;
    red.green   = 0;
#endif
    vlc_mutex_lock( &p_playlist->object_lock );
    for( i_dummy = 0; i_dummy < p_playlist->i_size ; i_dummy++ )
    {
        ppsz_text[0] = p_playlist->pp_items[i_dummy]->psz_name;
        ppsz_text[1] = "no info";
        gtk_list_store_append (p_list, &iter);
        gtk_list_store_set (p_list, &iter,
                            0, ppsz_text[0],
                            1, ppsz_text[1],
                            2, i_dummy, /* Hidden index */
                            -1);
    }
    vlc_mutex_unlock( &p_playlist->object_lock );
}

/*****************************************************************
 * Read directory helper function.
 ****************************************************************/
void ReadDirectory(intf_thread_t *p_intf, GtkListStore *p_list, char *psz_dir )
{
    GtkTreeIter    iter;
    struct dirent **pp_namelist;
    struct passwd *p_pw;
    struct group  *p_grp;
    struct stat    st;
    int n=-1, status=-1;

    msg_Dbg(p_intf, "Changing to dir %s", psz_dir);
    if (psz_dir)
    {
       status = chdir(psz_dir);
       if (status<0)
          msg_Dbg(p_intf, "permision denied" );
    }
    n = scandir(".", &pp_namelist, 0, alphasort);

    if (n<0)
        perror("scandir");
    else
    {
        int i;
        gchar *ppsz_text[4];

        if (lstat("..", &st)==0)
        {
            /* user, group  */
            p_pw  = getpwuid(st.st_uid);
            p_grp = getgrgid(st.st_gid);

            /* XXX : kludge temporaire pour yopy */
            ppsz_text[0] = "..";
            ppsz_text[1] = get_file_perms(st);
            ppsz_text[2] = p_pw->pw_name;
            ppsz_text[3] = p_grp->gr_name;

            /* Add a new row to the model */
            gtk_list_store_append (p_list, &iter);
            gtk_list_store_set (p_list, &iter,
                                0, ppsz_text[0],
                                1, ppsz_text[1],
                                2, st.st_size,
                                3, ppsz_text[2],
                                4, ppsz_text[3],
                                -1);

            if (ppsz_text[1]) free(ppsz_text[1]);
        }
            /* kludge */
        for (i=0; i<n; i++)
        {           
            if ((pp_namelist[i]->d_name[0] != '.') &&
                (lstat(pp_namelist[i]->d_name, &st)==0))
            {
                /* user, group  */
                p_pw  = getpwuid(st.st_uid);
                p_grp = getgrgid(st.st_gid);

                /* This is a list of strings. */
                ppsz_text[0] = pp_namelist[i]->d_name;
                ppsz_text[1] = get_file_perms(st);
                ppsz_text[2] = p_pw->pw_name;
                ppsz_text[3] = p_grp->gr_name;
#if 0
                msg_Dbg(p_intf, "(%d) file: %s permission: %s user: %s group: %s", i, ppsz_text[0], ppsz_text[1], ppsz_text[2], ppsz_text[3] );
#endif
                gtk_list_store_append (p_list, &iter);
                gtk_list_store_set (p_list, &iter,
                                    0, ppsz_text[0],
                                    1, ppsz_text[1],
                                    2, st.st_size,
                                    3, ppsz_text[2],
                                    4, ppsz_text[3],
                                    -1);

                if (ppsz_text[1]) free(ppsz_text[1]);
            }
        }
        free(pp_namelist);
    }
}

static char *get_file_perms(const struct stat st)
{
    char  *psz_perm;

    psz_perm = (char *) malloc(sizeof(char)*10);
    strncpy( psz_perm, "----------", sizeof("----------"));

    /* determine permission modes */
    if (S_ISLNK(st.st_mode))
        psz_perm[0]= 'l';
    else if (S_ISDIR(st.st_mode))
        psz_perm[0]= 'd';
    else if (S_ISCHR(st.st_mode))
        psz_perm[0]= 'c';
    else if (S_ISBLK(st.st_mode))
        psz_perm[0]= 'b';
    else if (S_ISFIFO(st.st_mode))
        psz_perm[0]= 'f';
    else if (S_ISSOCK(st.st_mode))
        psz_perm[0]= 's';
    else if (S_ISREG(st.st_mode))
        psz_perm[0]= '-';
    else /* Unknown type is an error */
        psz_perm[0]= '?';
    /* Get file permissions */
    /* User */
    if (st.st_mode & S_IRUSR)
        psz_perm[1]= 'r';
    if (st.st_mode & S_IWUSR)
        psz_perm[2]= 'w';
    if (st.st_mode & S_IXUSR)
    {
        if (st.st_mode & S_ISUID)
            psz_perm[3] = 's';
        else
            psz_perm[3]= 'x';
    }
    else if (st.st_mode & S_ISUID)
        psz_perm[3] = 'S';
    /* Group */
    if (st.st_mode & S_IRGRP)
        psz_perm[4]= 'r';
    if (st.st_mode & S_IWGRP)
        psz_perm[5]= 'w';
    if (st.st_mode & S_IXGRP)
    {
        if (st.st_mode & S_ISGID)
            psz_perm[6] = 's';
        else
            psz_perm[6]= 'x';
    }
    else if (st.st_mode & S_ISGID)
        psz_perm[6] = 'S';
    /* Other */
    if (st.st_mode & S_IROTH)
        psz_perm[7]= 'r';
    if (st.st_mode & S_IWOTH)
        psz_perm[8]= 'w';
    if (st.st_mode & S_IXOTH)
    {
        /* 'sticky' bit */
        if (st.st_mode &S_ISVTX)
            psz_perm[9] = 't';
        else
            psz_perm[9]= 'x';
    }
    else if (st.st_mode &S_ISVTX)
        psz_perm[9]= 'T';

    return psz_perm;
}

/*
 * Main interface callbacks
 */

gboolean onPDADeleteEvent(GtkWidget *widget, GdkEvent *event, gpointer user_data)
{
    intf_thread_t *p_intf = GtkGetIntf( widget );

    vlc_mutex_lock( &p_intf->change_lock );
    p_intf->p_vlc->b_die = VLC_TRUE;
    vlc_mutex_unlock( &p_intf->change_lock );
    msg_Dbg( p_intf, "about to exit vlc ... signaled" );

    return TRUE;
}


void onRewind(GtkButton *button, gpointer user_data)
{
    intf_thread_t *p_intf = GtkGetIntf( button );

    if (p_intf->p_sys->p_input != NULL)
    {
        input_SetStatus( p_intf->p_sys->p_input, INPUT_STATUS_SLOWER );
    }
}


void onPause(GtkButton *button, gpointer user_data)
{
    intf_thread_t *p_intf = GtkGetIntf( button );

    if (p_intf->p_sys->p_input != NULL)
    {
        input_SetStatus( p_intf->p_sys->p_input, INPUT_STATUS_PAUSE );
    }
}


void onPlay(GtkButton *button, gpointer user_data)
{
    intf_thread_t *p_intf = GtkGetIntf( GTK_WIDGET( button ) );
    playlist_t *p_playlist = vlc_object_find( p_intf, VLC_OBJECT_PLAYLIST, FIND_ANYWHERE );

    if (p_playlist)
    {
        vlc_mutex_lock( &p_playlist->object_lock );
        if (p_playlist->i_size)
        {
            vlc_mutex_unlock( &p_playlist->object_lock );
            playlist_Play( p_playlist );
            gdk_window_lower( p_intf->p_sys->p_window->window );
        }
        else
        {
            vlc_mutex_unlock( &p_playlist->object_lock );
        }