magnify.c

uclinux 下的vlc播放器源代码

    magnify( Y_PLANE );
    magnify( U_PLANE );
    magnify( V_PLANE );
#undef magnify
    }
    else
    {
#define copy( plane ) \
        memcpy( p_outpic->p[plane].p_pixels, p_pic->p[plane].p_pixels, \
            p_outpic->p[plane].i_lines * p_outpic->p[plane].i_pitch );
        copy( Y_PLANE );
        copy( U_PLANE );
        copy( V_PLANE );
#undef copy
    }

    if( p_vout->p_sys->b_visible )
    {
        /* image visualization */
        fmt_out = p_vout->fmt_out;
        fmt_out.i_width = p_vout->render.i_width/VIS_ZOOM;
        fmt_out.i_height = p_vout->render.i_height/VIS_ZOOM;
        p_converted = image_Convert( p_vout->p_sys->p_image, p_pic,
                                     &(p_pic->format), &fmt_out );
    #define copyimage( plane ) \
        for( y=0; y<p_converted->p[plane].i_visible_lines; y++) \
        { \
            memcpy( p_outpic->p[plane].p_pixels+y*p_outpic->p[plane].i_pitch, \
            p_converted->p[plane].p_pixels+y*p_converted->p[plane].i_pitch, \
            p_converted->p[plane].i_visible_pitch ); \
        }
        copyimage( Y_PLANE );
        copyimage( U_PLANE );
        copyimage( V_PLANE );
    #undef copyimage
        p_converted->pf_release( p_converted );

        /* white rectangle on visualization */
        v_w = p_oyp->i_pitch*ZOOM_FACTOR/(VIS_ZOOM*o_zoom);
        v_h = (o_y+p_oyp->i_lines*ZOOM_FACTOR/o_zoom)/VIS_ZOOM;
        /* top line */
        memset( p_oyp->p_pixels
                + o_y/VIS_ZOOM*p_oyp->i_pitch
                + o_x/VIS_ZOOM, 0xff, v_w+1 );

        for( y = o_y/VIS_ZOOM+1; y < v_h; y++ )
        {
            /* left line */
            p_oyp->p_pixels[
                y*p_oyp->i_pitch+o_x/VIS_ZOOM
            ] = 0xff;
            /* right line */
            p_oyp->p_pixels[
                y*p_oyp->i_pitch+o_x/VIS_ZOOM + v_w
            ] = 0xff;
        }
        /* bottom line */
        memset( p_oyp->p_pixels
                + v_h*p_oyp->i_pitch
                + o_x/VIS_ZOOM, 0xff, v_w+1 );

        /* */
        v_h = p_oyp->i_lines/VIS_ZOOM;
    }
    else
    {
        v_h = 1;
    }

    /* print a small "VLC ZOOM" ... gruikkkkkkkkk */
#define DRAW(a) {int c,l=1;L a;}
#define L ;l++,c=1
#define X ;draw(l,c);c+=1
#define o +1
#define draw(y,x) p_oyp->p_pixels[(v_h+y)*p_oyp->i_pitch+x] = 0xff;
if( p_vout->p_sys->b_visible )
DRAW(
X o o o X o X o o o o o o X X X X o o o X X X X X o o X X X o o o X X X o o X X o X X o o o X o o o X o X X X X X o X X X X o o X X X X X L
X o o o X o X o o o o o X o o o o o o o o o o X o o X o o o X o X o o o X o X o X o X o o o X o o o X o o o X o o o X o o o X o X o o o o L
o X o X o o X o o o o o X o o o o o o o o o X o o o X o o o X o X o o o X o X o o o X o o o X X X X X o o o X o o o X o o o X o X X X X o L
o X o X o o X o o o o o X o o o o o o o o X o o o o X o o o X o X o o o X o X o o o X o o o X o o o X o o o X o o o X o o o X o X o o o o L
o o X o o o X X X X X o o X X X X o o o X X X X X o o X X X o o o X X X o o X o o o X o o o X o o o X o X X X X X o X X X X o o X X X X X L
)
else
DRAW(
X o o o X o X o o o o o o X X X X o o o X X X X X o o X X X o o o X X X o o X X o X X o o o o X X X X o X o o o X o o X X X o o X o o o X L
X o o o X o X o o o o o X o o o o o o o o o o X o o X o o o X o X o o o X o X o X o X o o o X o o o o o X o o o X o X o o o X o X o o o X L
o X o X o o X o o o o o X o o o o o o o o o X o o o X o o o X o X o o o X o X o o o X o o o o X X X o o X X X X X o X o o o X o X o X o X L
o X o X o o X o o o o o X o o o o o o o o X o o o o X o o o X o X o o o X o X o o o X o o o o o o o X o X o o o X o X o o o X o X o X o X L
o o X o o o X X X X X o o X X X X o o o X X X X X o o X X X o o o X X X o o X o o o X o o o X X X X o o X o o o X o o X X X o o o X o X o L
)
#undef DRAW
#undef L
#undef X
#undef O
#undef draw

    if( p_vout->p_sys->b_visible )
    {
        /* zoom gauge */
        memset( p_oyp->p_pixels
                    + (v_h+9)*p_oyp->i_pitch,
                    0xff, 41 );
        for( y = v_h + 10; y < v_h + 90; y++ )
        {
            int width = v_h + 90 - y;
            width = (width*width)/160;
            if( (80 - y + v_h)*10 < o_zoom )
            {
                memset( p_oyp->p_pixels
                    + y*p_oyp->i_pitch,
                    0xff, width );
            }
            else
            {
                p_oyp->p_pixels[y*p_oyp->i_pitch] = 0xff;
                p_oyp->p_pixels[y*p_oyp->i_pitch + width - 1] = 0xff;
            }
        }
    }

    vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
}

/*****************************************************************************
 * SendEvents: forward mouse and keyboard events to the parent p_vout
 *****************************************************************************/
static int SendEvents( vlc_object_t *p_this, char const *psz_var,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    var_Set( (vlc_object_t *)p_data, psz_var, newval );

    return VLC_SUCCESS;
}

/*****************************************************************************
 * SendEventsToChild: forward events to the child/children vout
 *****************************************************************************/
static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    vout_thread_t *p_vout = (vout_thread_t *)p_this;
    var_Set( p_vout->p_sys->p_vout, psz_var, newval );
    return VLC_SUCCESS;
}

/*****************************************************************************
 * MouseEvent: callback for mouse events
 *****************************************************************************/
static int MouseEvent( vlc_object_t *p_this, char const *psz_var,
                       vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
    vout_thread_t *p_vout = (vout_thread_t*)p_data;
    vlc_value_t vald,valx,valy;

#define MOUSE_DOWN    1
#define MOUSE_CLICKED 2
#define MOUSE_MOVE_X  4
#define MOUSE_MOVE_Y  8
#define MOUSE_MOVE    12
    uint8_t mouse= 0;

    int v_h = p_vout->output.i_height*ZOOM_FACTOR/p_vout->p_sys->i_zoom;
    int v_w = p_vout->output.i_width*ZOOM_FACTOR/p_vout->p_sys->i_zoom;

    if( psz_var[6] == 'x' ) mouse |= MOUSE_MOVE_X;
    if( psz_var[6] == 'y' ) mouse |= MOUSE_MOVE_Y;
    if( psz_var[6] == 'c' ) mouse |= MOUSE_CLICKED;

    var_Get( p_vout->p_sys->p_vout, "mouse-button-down", &vald );
    if( vald.i_int & 0x1 ) mouse |= MOUSE_DOWN;
    var_Get( p_vout->p_sys->p_vout, "mouse-y", &valy );
    var_Get( p_vout->p_sys->p_vout, "mouse-x", &valx );

    if( ( mouse&MOUSE_MOVE && mouse&MOUSE_DOWN)
        || mouse&MOUSE_CLICKED )
    {
    /* (mouse moved and mouse button is down) or (mouse clicked) */
        if( p_vout->p_sys->b_visible )
        {
            if(    0 <= valy.i_int
                && valy.i_int < (int)p_vout->output.i_height/VIS_ZOOM
                && 0 <= valx.i_int
                && valx.i_int < (int)p_vout->output.i_width/VIS_ZOOM )
            {
            /* mouse is over visualisation */
                p_vout->p_sys->i_x = __MIN( __MAX( valx.i_int*VIS_ZOOM - v_w/2, 0 ),
                                            p_vout->output.i_width - v_w - 1);
                p_vout->p_sys->i_y = __MIN( __MAX( valy.i_int * VIS_ZOOM - v_h/2,
                                        0 ), p_vout->output.i_height - v_h - 1);
            }
            else if( valx.i_int >= 0 && valx.i_int < 80
                && valy.i_int >= (int)p_vout->output.i_height/VIS_ZOOM
                && valy.i_int < (int)p_vout->output.i_height/VIS_ZOOM + 9
                && mouse&MOUSE_CLICKED )
            {
            /* mouse is over the "VLC ZOOM HIDE" text */
                p_vout->p_sys->b_visible = VLC_FALSE;
            }
            else if(    (int)p_vout->output.i_height/VIS_ZOOM + 9 <= valy.i_int
                     && valy.i_int <= (int)p_vout->output.i_height/VIS_ZOOM + 90
                     && 0 <= valx.i_int
                     && valx.i_int <=
                     (( (int)p_vout->output.i_height/VIS_ZOOM + 90 -  valy.i_int)
               *( (int)p_vout->output.i_height/VIS_ZOOM + 90 -  valy.i_int))/160 )
            {
            /* mouse is over zoom gauge */
                p_vout->p_sys->i_zoom = __MAX( ZOOM_FACTOR,
                                ( 80 + (int)p_vout->output.i_height/VIS_ZOOM
                                   - valy.i_int + 2) * ZOOM_FACTOR/10 );
            }
            else if( mouse&MOUSE_MOVE_X && !(mouse&MOUSE_CLICKED) )
            {
                p_vout->p_sys->i_x -= (newval.i_int - oldval.i_int)
                                      *ZOOM_FACTOR/p_vout->p_sys->i_zoom;
            }
            else if( mouse&MOUSE_MOVE_Y && !(mouse&MOUSE_CLICKED) )
            {
                p_vout->p_sys->i_y -= (newval.i_int - oldval.i_int)
                                      *ZOOM_FACTOR/p_vout->p_sys->i_zoom;
            }
        }
        else
        {
            if( valx.i_int >= 0 && valx.i_int < 80 && valy.i_int >= 0
                && valy.i_int <= 10 && mouse&MOUSE_CLICKED )
            {
            /* mouse is over the "VLC ZOOM SHOW" text */
                p_vout->p_sys->b_visible = VLC_TRUE;
            }
            else if( mouse&MOUSE_MOVE_X && !(mouse&MOUSE_CLICKED) )
            {
                p_vout->p_sys->i_x -= (newval.i_int - oldval.i_int)
                                      *ZOOM_FACTOR/p_vout->p_sys->i_zoom;
            }
            else if( mouse&MOUSE_MOVE_Y && !(mouse&MOUSE_CLICKED) )
            {
                p_vout->p_sys->i_y -= (newval.i_int - oldval.i_int)
                                      *ZOOM_FACTOR/p_vout->p_sys->i_zoom;
            }
        }
    }

    p_vout->p_sys->i_x =
         __MAX( 0, __MIN( p_vout->p_sys->i_x, (int)p_vout->output.i_width
         - (int)p_vout->output.i_width*ZOOM_FACTOR/p_vout->p_sys->i_zoom - 1 ));
    p_vout->p_sys->i_y =
         __MAX( 0, __MIN( p_vout->p_sys->i_y, (int)p_vout->output.i_height
        - (int)p_vout->output.i_height*ZOOM_FACTOR/p_vout->p_sys->i_zoom - 1 ));


    return VLC_SUCCESS;
}