qte.cpp

video linux conference

/*****************************************************************************
 * qte.cpp : QT Embedded plugin for vlc
 *****************************************************************************
 * Copyright (C) 1998-2003 VideoLAN
 * $Id: qte.cpp 10101 2005-03-02 16:47:31Z robux4 $
 *
 * Authors: Gerald Hansink <[e-mail]>
 *          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
 *****************************************************************************/

/*****************************************************************************
 * notes:
 * - written for ipaq, so hardcoded assumptions specific for ipaq...
 * - runs full screen
 * - no "mouse events" handling
 * - etc.
 *****************************************************************************/

extern "C"
{
#include <errno.h>                                                 /* ENOMEM */
#include <stdlib.h>                                                /* free() */
#include <string.h>                                                /* strerror() */

#include <vlc/vlc.h>
#include <vlc/intf.h>
#include <vlc/vout.h>

#ifdef HAVE_MACHINE_PARAM_H
    /* BSD */
#   include <machine/param.h>
#   include <sys/types.h>                                  /* typedef ushort */
#   include <sys/ipc.h>
#endif

#ifndef WIN32
#   include <netinet/in.h>                            /* BSD: struct in_addr */
#endif

#ifdef HAVE_SYS_SHM_H
#   include <sys/shm.h>                                /* shmget(), shmctl() */
#endif
} /* extern "C" */

#include <qapplication.h>
#include <qpainter.h>

#ifdef Q_WS_QWS
#   define USE_DIRECT_PAINTER
#   include <qdirectpainter_qws.h>
#   include <qgfxraster_qws.h>
#endif

extern "C"
{
#include "qte.h"

/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
#define DISPLAY_TEXT N_("QT Embedded display name")
#define DISPLAY_LONGTEXT N_( \
    "Specify the Qt Embedded hardware display you want to use. " \
    "By default VLC will use the value of the DISPLAY environment variable.")

/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
static int  Open      ( vlc_object_t * );
static void Close     ( vlc_object_t * );
static void Render    ( vout_thread_t *, picture_t * );
static void Display   ( vout_thread_t *, picture_t * );
static int  Manage    ( vout_thread_t * );
static int  Init      ( vout_thread_t * );
static void End       ( vout_thread_t * );

static int  OpenDisplay ( vout_thread_t * );
static void CloseDisplay( vout_thread_t * );

static int  NewPicture     ( vout_thread_t *, picture_t * );
static void FreePicture    ( vout_thread_t *, picture_t * );

static void ToggleFullScreen      ( vout_thread_t * );

static void RunQtThread( event_thread_t *p_event );
} /* extern "C" */

/*****************************************************************************
* Exported prototypes
*****************************************************************************/
extern "C"
{

vlc_module_begin();
    set_category( CAT_VIDEO );
    set_subcategory( SUBCAT_VIDEO_VOUT );
//    add_category_hint( N_("QT Embedded"), NULL );
//    add_string( "qte-display", "landscape", NULL, DISPLAY_TEXT, DISPLAY_LONGTEXT);
    set_description( _("QT Embedded video output") );
    set_capability( "video output", 70 );
    add_shortcut( "qte" );
    set_callbacks( Open, Close);
vlc_module_end();

} /* extern "C" */

/*****************************************************************************
 * Seeking function TODO: put this in a generic location !
 *****************************************************************************/
static inline void vout_Seek( off_t i_seek )
{
}

/*****************************************************************************
 * Open: allocate video thread output method
 *****************************************************************************/
static int Open( vlc_object_t *p_this )
{
    vout_thread_t * p_vout = (vout_thread_t *)p_this;

    /* Allocate structure */
    p_vout->p_sys = (struct vout_sys_t*) malloc( sizeof( struct vout_sys_t ) );

    if( p_vout->p_sys == NULL )
    {
        msg_Err( p_vout, "out of memory" );
        return( 1 );
    }

    p_vout->pf_init    = Init;
    p_vout->pf_end     = End;
    p_vout->pf_manage  = Manage;
    p_vout->pf_render  = NULL; //Render;
    p_vout->pf_display = Display;

#ifdef NEED_QTE_MAIN
    p_vout->p_sys->p_qte_main =
        module_Need( p_this, "gui-helper", "qte", VLC_TRUE );
    if( p_vout->p_sys->p_qte_main == NULL )
    {
        free( p_vout->p_sys );
        return VLC_ENOMOD;
    }
#endif

    if (OpenDisplay(p_vout))
    {
        msg_Err( p_vout, "Cannot set up qte video output" );
        Close(p_this);
        return( -1 );
    }
    return( 0 );
}

/*****************************************************************************
 * CloseVideo: destroy Sys video thread output method
 *****************************************************************************
 * Terminate an output method created by Open
 *****************************************************************************/
static void Close ( vlc_object_t *p_this )
{
    vout_thread_t * p_vout = (vout_thread_t *)p_this;

    msg_Dbg( p_vout, "close" );
    if( p_vout->p_sys->p_event )
    {
        vlc_object_detach( p_vout->p_sys->p_event );

        /* Kill RunQtThread */
        p_vout->p_sys->p_event->b_die = VLC_TRUE;
        CloseDisplay(p_vout);

        vlc_thread_join( p_vout->p_sys->p_event );
        vlc_object_destroy( p_vout->p_sys->p_event );
    }

#ifdef NEED_QTE_MAIN
    msg_Dbg( p_vout, "releasing gui-helper" );
    module_Unneed( p_vout, p_vout->p_sys->p_qte_main );
#endif

    if( p_vout->p_sys )
    {
        free( p_vout->p_sys );
        p_vout->p_sys = NULL;
    }
}

/*****************************************************************************
 * Init: initialize video thread output method
 *****************************************************************************
 * This function create the buffers needed by the output thread. It is called
 * at the beginning of the thread, but also each time the window is resized.
 *****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
    int         i_index;
    picture_t*  p_pic;
    int         dd = QPixmap::defaultDepth();

    I_OUTPUTPICTURES = 0;

    p_vout->output.i_chroma = (dd == 16) ? VLC_FOURCC('R','V','1','6'): VLC_FOURCC('R','V','3','2');
    p_vout->output.i_rmask  = 0xf800;
    p_vout->output.i_gmask  = 0x07e0;
    p_vout->output.i_bmask  = 0x001f;

    /* All we have is an RGB image with square pixels */
    p_vout->output.i_width  = p_vout->p_sys->i_width;
    p_vout->output.i_height = p_vout->p_sys->i_height;
    if( !p_vout->b_fullscreen )
    {
        p_vout->output.i_aspect = p_vout->output.i_width
                                   * VOUT_ASPECT_FACTOR
                                   / p_vout->output.i_height;
    }
    else
    {
        p_vout->output.i_aspect = p_vout->render.i_aspect;
    }
#if 0
    msg_Dbg( p_vout, "Init (h=%d,w=%d,aspect=%d)",p_vout->output.i_height,p_vout->output.i_width,p_vout->output.i_aspect );
#endif
    /* Try to initialize MAX_DIRECTBUFFERS direct buffers */
    while( I_OUTPUTPICTURES < QTE_MAX_DIRECTBUFFERS )
    {
        p_pic = NULL;

        /* Find an empty picture slot */
        for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
        {
            if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
            {
                p_pic = p_vout->p_picture + i_index;
                break;
            }
        }

        /* Allocate the picture */
        if( p_pic == NULL ||  NewPicture( p_vout, p_pic ) )
        {
            break;
        }

        p_pic->i_status = DESTROYED_PICTURE;
        p_pic->i_type   = DIRECT_PICTURE;

        PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;

        I_OUTPUTPICTURES++;
    }

    return( 0 );
}


/*****************************************************************************
 * Render: render previously calculated output
 *****************************************************************************/
static void Render( vout_thread_t *p_vout, picture_t *p_pic )
{
    ;
}

/*****************************************************************************
 * Display: displays previously rendered output
 *****************************************************************************
 * This function sends the currently rendered image to screen.
 *****************************************************************************/
static void Display( vout_thread_t *p_vout, picture_t *p_pic )
{
    unsigned int x, y, w, h;

    vout_PlacePicture( p_vout, p_vout->output.i_width, p_vout->output.i_height,
                       &x, &y, &w, &h );
#if 0
    msg_Dbg(p_vout, "+qte::Display( p_vout, i_width=%d, i_height=%d, x=%u, y=%u, w=%u, h=%u",
        p_vout->output.i_width, p_vout->output.i_height, x, y, w, h );
#endif

    if(p_vout->p_sys->p_VideoWidget)
    {
// shameless borrowed from opie mediaplayer....
#ifndef USE_DIRECT_PAINTER
        msg_Dbg(p_vout, "not using direct painter");
        QPainter p(p_vout->p_sys->p_VideoWidget);

        /* rotate frame */
        int dd      = QPixmap::defaultDepth();
        int bytes   = ( dd == 16 ) ? 2 : 4;
        int rw = h, rh = w;

        QImage rotatedFrame( rw, rh, bytes << 3 );

        ushort* in  = (ushort*)p_pic->p_sys->pQImage->bits();
        ushort* out = (ushort*)rotatedFrame.bits();

        int spl = rotatedFrame.bytesPerLine() / bytes;
        for (int x=0; x<h; x++)
        {
            if ( bytes == 2 )
            {
                ushort* lout = out++ + (w - 1)*spl;
                for (int y=0; y<w; y++)
                {
                    *lout=*in++;
                    lout-=spl;
                }
            }
            else
            {
                ulong* lout = ((ulong *)out)++ + (w - 1)*spl;
                for (int y=0; y<w; y++)
                {
                    *lout=*((ulong*)in)++;
                    lout-=spl;
                }
            }