videooutput.cpp

VLC媒体播放程序

/*****************************************************************************
 * vout_beos.cpp: beos video output display method
 *****************************************************************************
 * Copyright (C) 2000, 2001 VideoLAN
 * $Id: VideoOutput.cpp,v 1.29 2003/12/28 01:49:12 titer Exp $
 *
 * Authors: Jean-Marc Dressler <[e-mail]>
 *          Samuel Hocevar <[e-mail]>
 *          Tony Castley <[e-mail]>
 *          Richard Shepherd <[e-mail]>
 *          Stephan Aßmus <[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 <errno.h>                                                 /* ENOMEM */
#include <stdlib.h>                                                /* free() */
#include <stdio.h>
#include <string.h>                                            /* strerror() */

#include <Application.h>
#include <BitmapStream.h>
#include <Bitmap.h>
#include <Directory.h>
#include <DirectWindow.h>
#include <File.h>
#include <InterfaceKit.h>
#include <NodeInfo.h>
#include <String.h>
#include <TranslatorRoster.h>
#include <WindowScreen.h>

/* VLC headers */
#include <vlc/vlc.h>
#include <vlc/intf.h>
#include <vlc/vout.h>
#include <vlc_keys.h>

#include "InterfaceWindow.h"	// for load/save_settings()
#include "DrawingTidbits.h"
#include "MsgVals.h"

#include "VideoWindow.h"

/*****************************************************************************
 * vout_sys_t: BeOS video output method descriptor
 *****************************************************************************
 * This structure is part of the video output thread descriptor.
 * It describes the BeOS specific properties of an output thread.
 *****************************************************************************/
struct vout_sys_t
{
    VideoWindow *  p_window;

    int32_t i_width;
    int32_t i_height;

//    uint8_t *pp_buffer[3];
    uint32_t source_chroma;
    int i_index;

};

#define MOUSE_IDLE_TIMEOUT 2000000	// two seconds
#define MIN_AUTO_VSYNC_REFRESH 61	// Hz
#define DEFAULT_SCREEN_SHOT_FORMAT 'PNG '
#define DEFAULT_SCREEN_SHOT_PATH "/boot/home/vlc screenshot"

/*****************************************************************************
 * beos_GetAppWindow : retrieve a BWindow pointer from the window name
 *****************************************************************************/
BWindow*
beos_GetAppWindow(char *name)
{
    int32_t     index;
    BWindow     *window;

    for (index = 0 ; ; index++)
    {
        window = be_app->WindowAt(index);
        if (window == NULL)
            break;
        if (window->LockWithTimeout(20000) == B_OK)
        {
            if (strcmp(window->Name(), name) == 0)
            {
                window->Unlock();
                break;
            }
            window->Unlock();
        }
    }
    return window;
}

static const int beos_keys[][2] =
{
    { B_LEFT_ARROW,  KEY_LEFT },
    { B_RIGHT_ARROW, KEY_RIGHT },
    { B_UP_ARROW,    KEY_UP },
    { B_DOWN_ARROW,  KEY_DOWN },
    { B_SPACE,       KEY_SPACE },
    { B_ENTER,       KEY_ENTER },
    { B_F1_KEY,      KEY_F1 },
    { B_F2_KEY,      KEY_F2 },
    { B_F3_KEY,      KEY_F3 },
    { B_F4_KEY,      KEY_F4 },
    { B_F5_KEY,      KEY_F5 },
    { B_F6_KEY,      KEY_F6 },
    { B_F7_KEY,      KEY_F7 },
    { B_F8_KEY,      KEY_F8 },
    { B_F9_KEY,      KEY_F9 },
    { B_F10_KEY,     KEY_F10 },
    { B_F11_KEY,     KEY_F11 },
    { B_F12_KEY,     KEY_F12 },
    { B_HOME,        KEY_HOME },
    { B_END,         KEY_END },
    { B_ESCAPE,      KEY_ESC },
    { B_PAGE_UP,     KEY_PAGEUP },
    { B_PAGE_DOWN,   KEY_PAGEDOWN },
    { B_TAB,         KEY_TAB },
    { B_BACKSPACE,   KEY_BACKSPACE }
};

static int ConvertKeyFromVLC( int key )
{
    for( unsigned i = 0; i < sizeof( beos_keys ) / sizeof( int ) / 2; i++ )
    {
        if( beos_keys[i][1] == key )
        {
            return beos_keys[i][0];
        }
    }
    return key;
}

static int ConvertKeyToVLC( int key )
{
    for( unsigned i = 0; i < sizeof( beos_keys ) / sizeof( int ) / 2; i++ )
    {
        if( beos_keys[i][0] == key )
        {
            return beos_keys[i][1];
        }
    }
    return key;
}

/*****************************************************************************
 * get_interface_window
 *****************************************************************************/
BWindow*
get_interface_window()
{
	return beos_GetAppWindow( "VLC " PACKAGE_VERSION );
}

class BackgroundView : public BView
{
 public:
							BackgroundView(BRect frame, VLCView* view)
							: BView(frame, "background",
									B_FOLLOW_ALL, B_FULL_UPDATE_ON_RESIZE),
							  fVideoView(view)
							{
								SetViewColor(kBlack);
							}
	virtual					~BackgroundView() {}

	virtual	void			MouseDown(BPoint where)
							{
								// convert coordinates
								where = fVideoView->ConvertFromParent(where);
								// let him handle it
								fVideoView->MouseDown(where);
							}
	virtual	void			MouseMoved(BPoint where, uint32_t transit,
									   const BMessage* dragMessage)
							{
								// convert coordinates
								where = fVideoView->ConvertFromParent(where);
								// let him handle it
								fVideoView->MouseMoved(where, transit, dragMessage);
								// notice: It might look like transit should be
								// B_OUTSIDE_VIEW regardless, but leave it like this,
								// otherwise, unwanted things will happen!
							}

 private:
	VLCView*				fVideoView;
};


/*****************************************************************************
 * VideoSettings constructor and destructor
 *****************************************************************************/
VideoSettings::VideoSettings()
	: fVideoSize( SIZE_100 ),
	  fFlags( FLAG_CORRECT_RATIO ),
	  fSettings( new BMessage( 'sett' ) )
{
	// read settings from disk
	status_t ret = load_settings( fSettings, "video_settings", "VideoLAN Client" );
	if ( ret == B_OK )
	{
		uint32_t flags;
		if ( fSettings->FindInt32( "flags", (int32*)&flags ) == B_OK )
			SetFlags( flags );
		uint32_t size;
		if ( fSettings->FindInt32( "video size", (int32*)&size ) == B_OK )
			SetVideoSize( size );
	}
	else
	{
		// figure out if we should use vertical sync by default
		BScreen screen(B_MAIN_SCREEN_ID);
		if (screen.IsValid())
		{
			display_mode mode;
			screen.GetMode(&mode);
			float refresh = (mode.timing.pixel_clock * 1000)
							/ ((mode.timing.h_total)* (mode.timing.v_total));
			if (refresh < MIN_AUTO_VSYNC_REFRESH)
				AddFlags(FLAG_SYNC_RETRACE);
		}
	}
}

VideoSettings::VideoSettings( const VideoSettings& clone )
	: fVideoSize( clone.VideoSize() ),
	  fFlags( clone.Flags() ),
	  fSettings( NULL )
{
}


VideoSettings::~VideoSettings()
{
	if ( fSettings )
	{
		// we are the default settings
		// and write our settings to disk
		if (fSettings->ReplaceInt32( "video size", VideoSize() ) != B_OK)
			fSettings->AddInt32( "video size", VideoSize() );
		if (fSettings->ReplaceInt32( "flags", Flags() ) != B_OK)
			fSettings->AddInt32( "flags", Flags() );

		save_settings( fSettings, "video_settings", "VideoLAN Client" );
		delete fSettings;
	}
	else
	{
		// we are just a clone of the default settings
		fDefaultSettings.SetVideoSize( VideoSize() );
		fDefaultSettings.SetFlags( Flags() );
	}
}

/*****************************************************************************
 * VideoSettings::DefaultSettings
 *****************************************************************************/
VideoSettings*
VideoSettings::DefaultSettings()
{
	return &fDefaultSettings;
}

/*****************************************************************************
 * VideoSettings::SetVideoSize
 *****************************************************************************/
void
VideoSettings::SetVideoSize( uint32_t mode )
{
	fVideoSize = mode;
}

// static variable initialization
VideoSettings
VideoSettings::fDefaultSettings;


/*****************************************************************************
 * VideoWindow constructor and destructor
 *****************************************************************************/
VideoWindow::VideoWindow(int v_width, int v_height, BRect frame,
                         vout_thread_t *p_videoout)
	: BWindow(frame, NULL, B_TITLED_WINDOW, B_NOT_CLOSABLE | B_NOT_MINIMIZABLE),
	  i_width(frame.IntegerWidth()),
	  i_height(frame.IntegerHeight()),
	  winSize(frame),
	  i_buffer(0),
	  teardownwindow(false),
	  fTrueWidth(v_width),
	  fTrueHeight(v_height),
	  fCachedFeel(B_NORMAL_WINDOW_FEEL),
	  fInterfaceShowing(false),
	  fInitStatus(B_ERROR),
	  fSettings(new VideoSettings(*VideoSettings::DefaultSettings()))
{
    p_vout = p_videoout;

    // create the view to do the display
    view = new VLCView( Bounds(), p_vout );

	// create background view
    BView *mainView =  new BackgroundView( Bounds(), view );
    AddChild(mainView);
    mainView->AddChild(view);

	// allocate bitmap buffers
	for (int32_t i = 0; i < 3; i++)
		bitmap[i] = NULL;
	fInitStatus = _AllocateBuffers(v_width, v_height, &mode);

	// make sure we layout the view correctly
    FrameResized(i_width, i_height);

    if (fInitStatus >= B_OK && mode == OVERLAY)
    {
       overlay_restrictions r;

       bitmap[1]->GetOverlayRestrictions(&r);
       SetSizeLimits((i_width * r.min_width_scale), i_width * r.max_width_scale,
                     (i_height * r.min_height_scale), i_height * r.max_height_scale);
    }

	// vlc settings override settings from disk
	if (config_GetInt(p_vout, "fullscreen"))
		fSettings->AddFlags(VideoSettings::FLAG_FULL_SCREEN);

    // add a few useful shortcuts
    // XXX works only with US keymap
    AddShortcut( '1', 0, new BMessage( RESIZE_50 ) );
    AddShortcut( '2', 0, new BMessage( RESIZE_100 ) );
    AddShortcut( '3', 0, new BMessage( RESIZE_200 ) );

    _SetToSettings();
}

VideoWindow::~VideoWindow()
{
    int32 result;

    teardownwindow = true;
    wait_for_thread(fDrawThreadID, &result);
    _FreeBuffers();
	delete fSettings;
}

/*****************************************************************************
 * VideoWindow::MessageReceived
 *****************************************************************************/
void
VideoWindow::MessageReceived( BMessage *p_message )
{
	switch( p_message->what )
	{
	    case SHOW_INTERFACE:
	        SetInterfaceShowing( true );
	        break;
		case TOGGLE_FULL_SCREEN:
			BWindow::Zoom();
			break;
		case RESIZE_50:
		case RESIZE_100:
		case RESIZE_200:
			if (IsFullScreen())
				BWindow::Zoom();
			_SetVideoSize(p_message->what);
			break;
		case VERT_SYNC:
			SetSyncToRetrace(!IsSyncedToRetrace());
			break;
		case WINDOW_FEEL:
			{
				window_feel winFeel;
				if (p_message->FindInt32("WinFeel", (int32*)&winFeel) == B_OK)
				{
					SetFeel(winFeel);
					fCachedFeel = winFeel;
					if (winFeel == B_FLOATING_ALL_WINDOW_FEEL)