voutqt.m

video linux conference

        /* Save the origin and clipping rectangle used by the host application
         * (e.g. Mozilla), so we can restore it later */
        GetPortBounds( p_vout->p_sys->p_qdport, &saved_rect );
        GetClip( saved_clip );

        /* The port gets unlocked at the end of this function */
        LockPortBits( p_vout->p_sys->p_qdport );

        /* Change the origin and clipping to the coordinates that the embedded
         * window wants to draw at */
        SetPort( p_vout->p_sys->p_qdport );
        SetOrigin( p_vout->p_sys->portx , p_vout->p_sys->porty );
        ClipRect( &p_vout->p_sys->clipping_rect );
    }

    if( ( err = DecompressSequenceFrameWhen(
                    p_vout->p_sys->i_seq,
                    p_pic->p_sys->p_data,
                    p_pic->p_sys->i_size,
                    codecFlagUseImageBuffer, &flags, NULL, NULL ) != noErr ) )
    {
        msg_Warn( p_vout, "DecompressSequenceFrameWhen failed: %d", err );
    }
    else
    {
        if( !p_vout->p_sys->b_embedded )
            QDFlushPortBuffer( p_vout->p_sys->p_qdport, nil );
    }

    if( p_vout->p_sys->b_embedded )
    {
        /* Restore the origin and clipping rectangle to the settings used
         * by the host application */
        SetOrigin( saved_rect.left, saved_rect.top );
        SetClip( saved_clip );

        UnlockPortBits( p_vout->p_sys->p_qdport );
    }
}

/*****************************************************************************
 * ControlVideo: control facility for the vout
 *****************************************************************************/
static int ControlVideo( vout_thread_t *p_vout, int i_query, va_list args )
{
    vlc_bool_t b_arg;

    switch( i_query )
    {
        case VOUT_SET_STAY_ON_TOP:
            b_arg = va_arg( args, vlc_bool_t );
            [p_vout->p_sys->o_window setOnTop: b_arg];
            return VLC_SUCCESS;

        case VOUT_CLOSE:
        case VOUT_REPARENT:
        default:
            return vout_vaControlDefault( p_vout, i_query, args );
    }
}

/*****************************************************************************
 * CoToggleFullscreen: toggle fullscreen 
 *****************************************************************************
 * Returns 0 on success, 1 otherwise
 *****************************************************************************/
static int CoToggleFullscreen( vout_thread_t *p_vout )
{
    NSAutoreleasePool *o_pool = [[NSAutoreleasePool alloc] init];

    QTDestroySequence( p_vout );

    if( !p_vout->b_fullscreen )
    {
        /* Save window size and position */
        p_vout->p_sys->s_frame.size =
            [[p_vout->p_sys->o_window contentView] frame].size;
        p_vout->p_sys->s_frame.origin =
            [p_vout->p_sys->o_window frame].origin;
        p_vout->p_sys->b_saved_frame = VLC_TRUE;
    }
    [p_vout->p_sys->o_window close];

    p_vout->b_fullscreen = !p_vout->b_fullscreen;

#define o_qtview p_vout->p_sys->o_qtview
    o_qtview = [[VLCQTView alloc] initWithVout: p_vout];
    [o_qtview autorelease];
    
    if( p_vout->p_sys->b_saved_frame )
    {
        p_vout->p_sys->o_window = [[VLCWindow alloc]
            initWithVout: p_vout view: o_qtview
            frame: &p_vout->p_sys->s_frame];
    }
    else
    {
        p_vout->p_sys->o_window = [[VLCWindow alloc]
            initWithVout: p_vout view: o_qtview frame: nil];
    }

    /* Retrieve the QuickDraw port */
    [o_qtview lockFocus];
    p_vout->p_sys->p_qdport = [o_qtview qdPort];
    [o_qtview unlockFocus];
#undef o_qtview

    SetPort( p_vout->p_sys->p_qdport );
    QTScaleMatrix( p_vout );

    if( QTCreateSequence( p_vout ) )
    {
        msg_Err( p_vout, "unable to create sequence" );
        return( 1 ); 
    } 

    [o_pool release];
    return 0;
}

/*****************************************************************************
 * QTScaleMatrix: scale matrix 
 *****************************************************************************/
static void QTScaleMatrix( vout_thread_t *p_vout )
{
    Rect s_rect;
    vlc_value_t val;
    unsigned int i_width, i_height;
    Fixed factor_x, factor_y;
    unsigned int i_offset_x = 0;
    unsigned int i_offset_y = 0;

    GetPortBounds( p_vout->p_sys->p_qdport, &s_rect );

    i_width = s_rect.right - s_rect.left;
    i_height = s_rect.bottom - s_rect.top;

    if( p_vout->p_sys->b_embedded )
    {
        /* Embedded video get their drawing region from the host application
         * by the drawable values here.  Read those variables, and store them
         * in the p_vout->p_sys structure so that other functions (such as
         * DisplayVideo and ManageVideo) can use them later. */
        vlc_value_t valt, vall, valb, valr, valx, valy, valw, valh,
                    valportx, valporty;

        var_Get( p_vout->p_vlc, "drawable", &val );
        var_Get( p_vout->p_vlc, "drawablet", &valt );
        var_Get( p_vout->p_vlc, "drawablel", &vall );
        var_Get( p_vout->p_vlc, "drawableb", &valb );
        var_Get( p_vout->p_vlc, "drawabler", &valr );
        var_Get( p_vout->p_vlc, "drawablex", &valx );
        var_Get( p_vout->p_vlc, "drawabley", &valy );
        var_Get( p_vout->p_vlc, "drawablew", &valw );
        var_Get( p_vout->p_vlc, "drawableh", &valh );
        var_Get( p_vout->p_vlc, "drawableportx", &valportx );
        var_Get( p_vout->p_vlc, "drawableporty", &valporty );

        p_vout->p_sys->portx = valportx.i_int;
        p_vout->p_sys->porty = valporty.i_int;
        p_vout->p_sys->p_qdport = (CGrafPtr) val.i_int;
        i_width = valw.i_int;
        i_height = valh.i_int;

        p_vout->p_sys->clipping_rect.top = 0;
        p_vout->p_sys->clipping_rect.left = 0;
        p_vout->p_sys->clipping_rect.bottom = valb.i_int - valt.i_int;
        p_vout->p_sys->clipping_rect.right = valr.i_int - vall.i_int;
    }

    var_Get( p_vout, "macosx-stretch", &val );
    if( val.b_bool )
    {
        factor_x = FixDiv( Long2Fix( i_width ),
                           Long2Fix( p_vout->output.i_width ) );
        factor_y = FixDiv( Long2Fix( i_height ),
                           Long2Fix( p_vout->output.i_height ) );

    }
    else if( i_height * p_vout->output.i_aspect < i_width * VOUT_ASPECT_FACTOR )
    {
        int i_adj_width = i_height * p_vout->output.i_aspect /
                          VOUT_ASPECT_FACTOR;

        factor_x = FixDiv( Long2Fix( i_adj_width ),
                           Long2Fix( p_vout->output.i_width ) );
        factor_y = FixDiv( Long2Fix( i_height ),
                           Long2Fix( p_vout->output.i_height ) );

        i_offset_x = (i_width - i_adj_width) / 2;
    }
    else
    {
        int i_adj_height = i_width * VOUT_ASPECT_FACTOR /
                           p_vout->output.i_aspect;

        factor_x = FixDiv( Long2Fix( i_width ),
                           Long2Fix( p_vout->output.i_width ) );
        factor_y = FixDiv( Long2Fix( i_adj_height ),
                           Long2Fix( p_vout->output.i_height ) );

        i_offset_y = (i_height - i_adj_height) / 2;
    }

    SetIdentityMatrix( p_vout->p_sys->p_matrix );

    ScaleMatrix( p_vout->p_sys->p_matrix,
                 factor_x, factor_y,
                 Long2Fix(0), Long2Fix(0) );

    TranslateMatrix( p_vout->p_sys->p_matrix,
                 Long2Fix(i_offset_x), Long2Fix(i_offset_y) );
}

/*****************************************************************************
 * QTCreateSequence: create a new sequence 
 *****************************************************************************
 * Returns 0 on success, 1 otherwise
 *****************************************************************************/
static int QTCreateSequence( vout_thread_t *p_vout )
{
    OSErr err;
    ImageDescriptionPtr p_descr;

    HLock( (Handle)p_vout->p_sys->h_img_descr );
    p_descr = *p_vout->p_sys->h_img_descr;

    p_descr->idSize = sizeof(ImageDescription);
    p_descr->cType = p_vout->p_sys->i_codec;
    p_descr->version = 2;
    p_descr->revisionLevel = 0;
    p_descr->vendor = 'mpla';
    p_descr->width = p_vout->output.i_width;
    p_descr->height = p_vout->output.i_height;
    p_descr->hRes = Long2Fix(72);
    p_descr->vRes = Long2Fix(72);
    p_descr->spatialQuality = codecLosslessQuality;
    p_descr->frameCount = 1;
    p_descr->clutID = -1;
    p_descr->dataSize = 0;
    p_descr->depth = 24;

    HUnlock( (Handle)p_vout->p_sys->h_img_descr );

    if( ( err = DecompressSequenceBeginS( 
                              &p_vout->p_sys->i_seq,
                              p_vout->p_sys->h_img_descr,
                              NULL,
                              (p_descr->width * p_descr->height * 16) / 8,
                              p_vout->p_sys->p_qdport,
                              NULL, NULL,
                              p_vout->p_sys->p_matrix,
                              srcCopy, NULL,
                              codecFlagUseImageBuffer,
                              codecLosslessQuality,
                              bestSpeedCodec ) ) )
    {
        msg_Err( p_vout, "DecompressSequenceBeginS failed: %d", err );
        return( 1 );
    }

    return( 0 );
}

/*****************************************************************************
 * QTDestroySequence: destroy sequence 
 *****************************************************************************/
static void QTDestroySequence( vout_thread_t *p_vout )
{
    CDSequenceEnd( p_vout->p_sys->i_seq );
}

/*****************************************************************************
 * QTNewPicture: allocate a picture
 *****************************************************************************
 * Returns 0 on success, 1 otherwise
 *****************************************************************************/
static int QTNewPicture( vout_thread_t *p_vout, picture_t *p_pic )
{
    /* We know the chroma, allocate a buffer which will be used
     * directly by the decoder */
    p_pic->p_sys = malloc( sizeof( picture_sys_t ) );

    if( p_pic->p_sys == NULL )
    {
        return( -1 );
    }

    vout_InitPicture( VLC_OBJECT( p_vout), p_pic, p_vout->output.i_chroma,
                      p_vout->output.i_width, p_vout->output.i_height,
                      p_vout->output.i_aspect );

    switch( p_vout->output.i_chroma )
    {
        case VLC_FOURCC('Y','U','Y','2'):
            p_pic->p_sys->i_size = p_vout->output.i_width * p_vout->output.i_height * 2;

            /* Allocate the memory buffer */
            p_pic->p_data = vlc_memalign( &p_pic->p_data_orig,
                                          16, p_pic->p_sys->i_size );

            p_pic->p[0].p_pixels = p_pic->p_data;
            p_pic->p[0].i_lines = p_vout->output.i_height;
            p_pic->p[0].i_visible_lines = p_vout->output.i_height;
            p_pic->p[0].i_pitch = p_vout->output.i_width * 2;
            p_pic->p[0].i_pixel_pitch = 1;
            p_pic->p[0].i_visible_pitch = p_vout->output.i_width * 2;
            p_pic->i_planes = 1;

            p_pic->p_sys->p_data = (void *)p_pic->p[0].p_pixels;

            break;
            
        case VLC_FOURCC('I','4','2','0'):
            p_pic->p_sys->p_data = (void *)&p_pic->p_sys->pixmap_i420;
            p_pic->p_sys->i_size = sizeof(PlanarPixmapInfoYUV420);
            
            /* Allocate the memory buffer */
            p_pic->p_data = vlc_memalign( &p_pic->p_data_orig,
                                          16, p_vout->output.i_width * p_vout->output.i_height * 3 / 2 );

            /* Y buffer */
            p_pic->Y_PIXELS = p_pic->p_data; 
            p_pic->p[Y_PLANE].i_lines = p_vout->output.i_height;
            p_pic->p[Y_PLANE].i_visible_lines = p_vout->output.i_height;
            p_pic->p[Y_PLANE].i_pitch = p_vout->output.i_width;
            p_pic->p[Y_PLANE].i_pixel_pitch = 1;
            p_pic->p[Y_PLANE].i_visible_pitch = p_vout->output.i_width;

            /* U buffer */
            p_pic->U_PIXELS = p_pic->Y_PIXELS + p_vout->output.i_height * p_vout->output.i_width;
            p_pic->p[U_PLANE].i_lines = p_vout->output.i_height / 2;
            p_pic->p[U_PLANE].i_visible_lines = p_vout->output.i_height / 2;
            p_pic->p[U_PLANE].i_pitch = p_vout->output.i_width / 2;
            p_pic->p[U_PLANE].i_pixel_pitch = 1;
            p_pic->p[U_PLANE].i_visible_pitch = p_vout->output.i_width / 2;

            /* V buffer */
            p_pic->V_PIXELS = p_pic->U_PIXELS + p_vout->output.i_height * p_vout->output.i_width / 4;
            p_pic->p[V_PLANE].i_lines = p_vout->output.i_height / 2;
            p_pic->p[V_PLANE].i_visible_lines = p_vout->output.i_height / 2;
            p_pic->p[V_PLANE].i_pitch = p_vout->output.i_width / 2;
            p_pic->p[V_PLANE].i_pixel_pitch = 1;
            p_pic->p[V_PLANE].i_visible_pitch = p_vout->output.i_width / 2;

            /* We allocated 3 planes */
            p_pic->i_planes = 3;

#define P p_pic->p_sys->pixmap_i420
            P.componentInfoY.offset = (void *)p_pic->Y_PIXELS
                                       - p_pic->p_sys->p_data;
            P.componentInfoCb.offset = (void *)p_pic->U_PIXELS
                                        - p_pic->p_sys->p_data;
            P.componentInfoCr.offset = (void *)p_pic->V_PIXELS
                                        - p_pic->p_sys->p_data;

            P.componentInfoY.rowBytes = p_vout->output.i_width;
            P.componentInfoCb.rowBytes = p_vout->output.i_width / 2;
            P.componentInfoCr.rowBytes = p_vout->output.i_width / 2;
#undef P
            break;
        
        default:
            /* Unknown chroma, tell the guy to get lost */
            free( p_pic->p_sys );
            msg_Err( p_vout, "never heard of chroma 0x%.8x (%4.4s)",
                     p_vout->output.i_chroma, (char*)&p_vout->output.i_chroma );
            p_pic->i_planes = 0;
            return( -1 );
    }

    return( 0 );
}

/*****************************************************************************
 * QTFreePicture: destroy a picture allocated with QTNewPicture
 *****************************************************************************/
static void QTFreePicture( vout_thread_t *p_vout, picture_t *p_pic )
{
    switch( p_vout->output.i_chroma )
    {
        case VLC_FOURCC('I','4','2','0'):
            free( p_pic->p_data_orig );
            break;
    }

    free( p_pic->p_sys );
}

/*****************************************************************************
 * VLCQTView implementation
 *****************************************************************************/
@implementation VLCQTView

- (id) initWithVout:(vout_thread_t *)_p_vout
{
    p_vout = _p_vout;
    return [super init];
}

- (void)drawRect:(NSRect)rect
{
    [[NSColor blackColor] set];
    NSRectFill( rect );
    [super drawRect: rect];

    p_vout->i_changes |= VOUT_SIZE_CHANGE;
}

@end