vout.m

uclinux 下的vlc播放器源代码

/*****************************************************************************
 * vout.m: MacOS X video output module
 *****************************************************************************
 * Copyright (C) 2001-2007 the VideoLAN team
 * $Id: vout.m 19667 2007-04-04 20:24:46Z fkuehne $
 *
 * Authors: Colin Delacroix <[e-mail]>
 *          Florian G. Pflug <[e-mail]>
 *          Jon Lech Johansen <[e-mail]>
 *          Derk-Jan Hartman <hartman at videolan dot org>
 *          Eric Petit <[e-mail]>
 *          Benjamin Pracht <bigben at videolan dot org>
 *          Felix K焗ne <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 <errno.h>                                                 /* ENOMEM */
#include <stdlib.h>                                                /* free() */
#include <string.h>                                            /* strerror() */

/* BeginFullScreen, EndFullScreen */
#include <QuickTime/QuickTime.h>

#include <vlc_keys.h>

#include "intf.h"
#include "fspanel.h"
#include "vout.h"
#import "controls.h"

/*****************************************************************************
 * DeviceCallback: Callback triggered when the video-device variable is changed
 *****************************************************************************/
int DeviceCallback( vlc_object_t *p_this, const char *psz_variable,
                     vlc_value_t old_val, vlc_value_t new_val, void *param )
{
    vlc_value_t val;
    vout_thread_t *p_vout = (vout_thread_t *)p_this;

    var_Create( p_vout->p_vlc, "video-device", VLC_VAR_INTEGER );
    var_Set( p_vout->p_vlc, "video-device", new_val );

    val.b_bool = VLC_TRUE;
    var_Set( p_vout, "intf-change", val );
    return VLC_SUCCESS;
}


/*****************************************************************************
 * VLCEmbeddedList implementation
 *****************************************************************************/
@implementation VLCEmbeddedList

- (id)init
{
    [super init];
    o_embedded_array = [NSMutableArray array];
    return self;
}

- (id)getEmbeddedVout
{
    unsigned int i;

    for( i = 0; i < [o_embedded_array count]; i++ )
    {
        id o_vout_view = [o_embedded_array objectAtIndex: i];
        if( ![o_vout_view isUsed] )
        {
            [o_vout_view setUsed: YES];
            return o_vout_view;
        }
    }
    return nil;
}

- (void)releaseEmbeddedVout: (id)o_vout_view
{
    if( [o_embedded_array containsObject: o_vout_view] )
    {
        [o_vout_view setUsed: NO];
    }
    else
    {
        msg_Warn( VLCIntf, "cannot find Video Output");
    }
}

- (void)addEmbeddedVout: (id)o_vout_view
{
    if( ![o_embedded_array containsObject: o_vout_view] )
    {
        [o_embedded_array addObject: o_vout_view];
    }
}

- (BOOL)windowContainsEmbedded: (id)o_window
{
/*    if( ![[o_window className] isEqualToString: @"VLCWindow"] )
    {
        NSLog( @"We were not given a VLCWindow" );
    }*/
    return ([self getViewForWindow: o_window] == nil ? NO : YES );
}

- (id)getViewForWindow: (id)o_window
{
    id o_enumerator = [o_embedded_array objectEnumerator];
    id o_current_embedded;

    while( (o_current_embedded = [o_enumerator nextObject]) )
    {
        if( [o_current_embedded getWindow] == o_window )
        {
            return o_current_embedded;
        }
    }
    return nil;
}

@end

/*****************************************************************************
 * VLCVoutView implementation
 *****************************************************************************/
@implementation VLCVoutView

- (id)initWithFrame:(NSRect)frameRect
{
    [super initWithFrame: frameRect];
    p_vout = NULL;
    o_view = nil;
    s_frame = &frameRect;

    p_real_vout = NULL;
    o_window = nil;
    return self;
}

- (BOOL)setVout: (vout_thread_t *) vout subView: (NSView *) view
                     frame: (NSRect *) frame
{
    int i_device;
    NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];
    NSArray *o_screens = [NSScreen screens];

    p_vout  = vout;
    o_view  = view;
    s_frame = frame;

    if( [o_screens count] <= 0 )
    {
        msg_Err( p_vout, "no OSX screens available" );
        return NO;
    }

    p_real_vout = [VLCVoutView getRealVout: p_vout];

    /* Get the pref value when this is the first time, otherwise retrieve the device from the top level video-device var */
    i_device = var_GetInteger( p_vout, "macosx-vdev" );
    if( var_Type( p_real_vout->p_vlc, "video-device" ) != 0 )
    {
        i_device = var_GetInteger( p_real_vout->p_vlc, "video-device" );
    }

    /* Setup the menuitem for the multiple displays. */
    if( var_Type( p_real_vout, "video-device" ) == 0 )
    {
        int i = 1;
        vlc_value_t val2, text;
        NSScreen * o_screen;

        var_Create( p_real_vout, "video-device", VLC_VAR_INTEGER |
                                            VLC_VAR_HASCHOICE );
        text.psz_string = _("Video Device");
        var_Change( p_real_vout, "video-device", VLC_VAR_SETTEXT, &text, NULL );

        NSEnumerator * o_enumerator = [o_screens objectEnumerator];

        val2.i_int = 0;
        text.psz_string = _("Default");
        var_Change( p_real_vout, "video-device",
                        VLC_VAR_ADDCHOICE, &val2, &text );
        var_Set( p_real_vout, "video-device", val2 );
        var_AddCallback( p_real_vout, "video-device", DeviceCallback, NULL );

        while( (o_screen = [o_enumerator nextObject]) != NULL )
        {
            char psz_temp[255];
            NSRect s_rect = [o_screen frame];

            snprintf( psz_temp, sizeof(psz_temp)/sizeof(psz_temp[0])-1,
                      "%s %d (%dx%d)", _("Screen"), i,
                      (int)s_rect.size.width, (int)s_rect.size.height );

            text.psz_string = psz_temp;
            val2.i_int = i;
            var_Change( p_real_vout, "video-device",
                        VLC_VAR_ADDCHOICE, &val2, &text );
            if( i == i_device )
            {
                var_Set( p_real_vout, "video-device", val2 );
            }
            i++;
        }

        val2.b_bool = VLC_TRUE;
        var_Set( p_real_vout, "intf-change", val2 );
    }

    /* Add the view. It's automatically resized to fit the window */
    [self addSubview: o_view];
    [self setAutoresizesSubviews: YES];
    [o_pool release];

    return YES;
}

- (void)resizeSubviewsWithOldSize:(NSSize)oldBoundsSize
{
    [super resizeSubviewsWithOldSize: oldBoundsSize];
    [o_view setFrameSize: [self frame].size];
}

- (void)closeVout
{
    [o_view removeFromSuperview];
    o_view = nil;
    p_vout = NULL;
    s_frame = nil;
    o_window = nil;
    p_real_vout = NULL;
}

- (void)updateTitle
{
    NSMutableString * o_title = nil, * o_mrl = nil;
    input_thread_t * p_input;

    if( p_vout == NULL )
    {
        return;
    }

    p_input = vlc_object_find( p_vout, VLC_OBJECT_INPUT, FIND_PARENT );

    if( p_input == NULL )
    {
        return;
    }

    if( p_input->input.p_item->psz_name != NULL )
        o_title = [NSMutableString stringWithUTF8String:
            p_input->input.p_item->psz_name];
    if( p_input->input.p_item->psz_uri != NULL )
        o_mrl = [NSMutableString stringWithUTF8String:
            p_input->input.p_item->psz_uri];
    if( o_title == nil )
        o_title = o_mrl;

    if( o_mrl != nil )
    {
        if( p_input->input.p_access && !strcmp( p_input->input.p_access->p_module->psz_shortname, "File" ) )
        {
            NSRange prefix_range = [o_mrl rangeOfString: @"file:"];
            if( prefix_range.location != NSNotFound )
                [o_mrl deleteCharactersInRange: prefix_range];
            [o_window setRepresentedFilename: o_mrl];
        }
        [o_window setTitle: o_title];
    }
    else
    {
        [o_window setTitle: [NSString stringWithCString: VOUT_TITLE]];
    }
    vlc_object_release( p_input );
}


- (void)setOnTop:(BOOL)b_on_top
{
    if( b_on_top )
    {
        [o_window setLevel: NSStatusWindowLevel];
    }
    else
    {
        [o_window setLevel: NSNormalWindowLevel];
    }
}

- (void)scaleWindowWithFactor: (float)factor animate: (BOOL)animate
{
    NSSize newsize;
    int i_corrected_height, i_corrected_width;
    NSPoint topleftbase;
    NSPoint topleftscreen;

    if ( !p_vout->b_fullscreen )
    {
        NSRect new_frame;
        topleftbase.x = 0;
        topleftbase.y = [o_window frame].size.height;
        topleftscreen = [o_window convertBaseToScreen: topleftbase];

        if( p_vout->render.i_height * p_vout->render.i_aspect >
                        p_vout->render.i_width * VOUT_ASPECT_FACTOR )
        {
            i_corrected_width = p_vout->render.i_height * p_vout->render.i_aspect /
                                            VOUT_ASPECT_FACTOR;
            newsize.width = (int) ( i_corrected_width * factor );
            newsize.height = (int) ( p_vout->render.i_height * factor );
        }
        else
        {
            i_corrected_height = p_vout->render.i_width * VOUT_ASPECT_FACTOR /
                                            p_vout->render.i_aspect;
            newsize.width = (int) ( p_vout->render.i_width * factor );
            newsize.height = (int) ( i_corrected_height * factor );
        }

        /* Calculate the window's new size */
        new_frame.size.width = [o_window frame].size.width -
                                    [self frame].size.width + newsize.width;
        new_frame.size.height = [o_window frame].size.height -
                                    [self frame].size.height + newsize.height;

        new_frame.origin.x = topleftscreen.x;
        new_frame.origin.y = topleftscreen.y - new_frame.size.height;

        [o_window setFrame: new_frame display: animate animate: animate];

        p_vout->i_changes |= VOUT_SIZE_CHANGE;
    }
}

- (void)toggleFloatOnTop
{
    vlc_value_t val;

    if( !p_real_vout ) return;
    if( var_Get( p_real_vout, "video-on-top", &val )>=0 && val.b_bool)
    {
        val.b_bool = VLC_FALSE;
    }
    else
    {
        val.b_bool = VLC_TRUE;
    }
    var_Set( p_real_vout, "video-on-top", val );
}

- (void)toggleFullscreen
{
    vlc_value_t val;
    if( !p_real_vout ) return;
    var_Get( p_real_vout, "fullscreen", &val );
    val.b_bool = !val.b_bool;
    var_Set( p_real_vout, "fullscreen", val );
    if( [self isFullscreen] )
        [[[[VLCMain sharedInstance] getControls] getFSPanel] setActive: nil];
    else