vout.m

来自「VLC媒体播放程序」· M 代码 · 共 1,859 行 · 第 1/4 页

 * This function sends the currently rendered image to the display.
 *****************************************************************************/
static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
{
    if( !p_vout->p_sys->i_opengl )
    {
        OSErr err;
        CodecFlags flags;

        if( ( err = DecompressSequenceFrameS( 
                        p_vout->p_sys->i_seq,
                        p_pic->p_sys->p_info,
                        p_pic->p_sys->i_size,                    
                        codecFlagUseImageBuffer, &flags, nil ) != noErr ) )
        {
            msg_Warn( p_vout, "DecompressSequenceFrameS failed: %d", err );
        }
        else
        {
            QDFlushPortBuffer( p_vout->p_sys->p_qdport, nil );
        }
    }
    else
    {
        if( [p_vout->p_sys->o_glview lockFocusIfCanDraw] )
        {
            /* Texture gotta be reload before the buffer is filled
               (thanks to gcc from arstechnica forums) */
            [p_vout->p_sys->o_glview drawRect:
                [p_vout->p_sys->o_glview bounds]];
            [p_vout->p_sys->o_glview reloadTexture];
            [p_vout->p_sys->o_glview unlockFocus];
        }
    }
}

/*****************************************************************************
 * CoSendRequest: send request to interface thread
 *****************************************************************************
 * Returns 0 on success, 1 otherwise
 *****************************************************************************/
static int CoSendRequest( vout_thread_t *p_vout, SEL sel )
{
    int i_ret = 0;
    vlc_value_t val;
    intf_thread_t * p_intf;

    VLCVout * o_vlv = [[VLCVout alloc] init];

    if( ( i_ret = ExecuteOnMainThread( o_vlv, sel, (void *)p_vout ) ) )
    {
        msg_Err( p_vout, "SendRequest: no way to communicate with mt" );
    }

    [o_vlv release];

    /*This makes this function dependant of the presence of a macosx 
    interface. We do not check if this interface exists, since it has 
    already been done before.*/

    p_intf = [NSApp getIntf];

    val.b_bool = VLC_TRUE;
    var_Create(p_intf,"intf-change",VLC_VAR_BOOL);
    var_Set(p_intf, "intf-change",val);

    return( i_ret );
}

/*****************************************************************************
 * CoCreateWindow: create new window 
 *****************************************************************************
 * Returns 0 on success, 1 otherwise
 *****************************************************************************/
static int CoCreateWindow( vout_thread_t *p_vout )
{
    if( CoSendRequest( p_vout, @selector(createWindow:) ) )
    {
        msg_Err( p_vout, "CoSendRequest (createWindow) failed" );
        return( 1 );
    }
    
    return( 0 );
}

/*****************************************************************************
 * CoDestroyWindow: destroy window 
 *****************************************************************************
 * Returns 0 on success, 1 otherwise
 *****************************************************************************/
static int CoDestroyWindow( vout_thread_t *p_vout )
{

    VLCHideMouse( p_vout, NO );

    if( CoSendRequest( p_vout, @selector(destroyWindow:) ) )
    {
        msg_Err( p_vout, "CoSendRequest (destroyWindow) failed" );
        return( 1 );
    }

    return( 0 );
}

/*****************************************************************************
 * CoToggleFullscreen: toggle fullscreen 
 *****************************************************************************
 * Returns 0 on success, 1 otherwise
 *****************************************************************************/
static int CoToggleFullscreen( vout_thread_t *p_vout )
{
    if( p_vout->p_sys->i_opengl )
    {
        p_vout->b_fullscreen = !p_vout->b_fullscreen;
        if( p_vout->b_fullscreen )
        {
            [p_vout->p_sys->o_glview goFullScreen];
        }
        else
        {
            [p_vout->p_sys->o_glview exitFullScreen];
        }
        return 0;
    }
    
    QTDestroySequence( p_vout );

    if( CoDestroyWindow( p_vout ) )
    {
        msg_Err( p_vout, "unable to destroy window" );
        return( 1 );
    }
    
    p_vout->b_fullscreen = !p_vout->b_fullscreen;

    if( CoCreateWindow( p_vout ) )
    {
        msg_Err( p_vout, "unable to create window" );
        return( 1 );
    }

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

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

    return( 0 );
}

/*****************************************************************************
 * VLCHideMouse: if b_hide then hide the cursor
 *****************************************************************************/
static void VLCHideMouse ( vout_thread_t *p_vout, BOOL b_hide )
{
    BOOL b_inside;
    NSRect s_rect;
    NSPoint ml;
    NSWindow *o_window = p_vout->p_sys->o_window;
    NSView *o_contents = [o_window contentView];
    
    s_rect = [o_contents bounds];
    ml = [o_window convertScreenToBase:[NSEvent mouseLocation]];
    ml = [o_contents convertPoint:ml fromView:nil];
    b_inside = [o_contents mouse: ml inRect: s_rect];
    
    if ( b_hide && b_inside )
    {
        /* only hide if mouse over VLCQTView */
        [NSCursor setHiddenUntilMouseMoves: YES];
    }
    else if ( !b_hide )
    {
        [NSCursor setHiddenUntilMouseMoves: NO];
    }
    p_vout->p_sys->b_mouse_moved = NO;
    p_vout->p_sys->i_time_mouse_last_moved = mdate();
    return;
}

/*****************************************************************************
 * QTScaleMatrix: scale matrix 
 *****************************************************************************/
static void QTScaleMatrix( vout_thread_t *p_vout )
{
    Rect s_rect;
    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( config_GetInt( p_vout, "macosx-stretch" ) )
    {
        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 = 1;
    p_descr->revisionLevel = 0;
    p_descr->vendor = 'appl';
    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, 0,
                              p_vout->p_sys->p_qdport,
                              NULL, NULL,
                              p_vout->p_sys->p_matrix,
                              0, NULL,
                              codecFlagUseImageBuffer,
                              codecLosslessQuality,
                              p_vout->p_sys->img_dc ) ) )
    {
        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 )
{
    int i_width  = p_vout->output.i_width;
    int i_height = p_vout->output.i_height;

    /* 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 );
    }

    switch( p_vout->output.i_chroma )
    {
        case VLC_FOURCC('I','4','2','0'):

            p_pic->p_sys->p_info = (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, i_width * i_height * 3 / 2 );

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

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

            /* V buffer */
            p_pic->V_PIXELS = p_pic->U_PIXELS + i_height * i_width / 4;
            p_pic->p[V_PLANE].i_lines = i_height / 2;
            p_pic->p[V_PLANE].i_pitch = i_width / 2;
            p_pic->p[V_PLANE].i_pixel_pitch = 1;
            p_pic->p[V_PLANE].i_visible_pitch = 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_info;
            P.componentInfoCb.offset = (void *)p_pic->U_PIXELS
                                        - p_pic->p_sys->p_info;
            P.componentInfoCr.offset = (void *)p_pic->V_PIXELS
                                        - p_pic->p_sys->p_info;

            P.componentInfoY.rowBytes = i_width;
            P.componentInfoCb.rowBytes = i_width / 2;
            P.componentInfoCr.rowBytes = 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 );
}

/*****************************************************************************
 * VLCWindow implementation
 *****************************************************************************/
@implementation VLCWindow

- (void)setVout:(vout_thread_t *)_p_vout
{
    p_vout = _p_vout;
}

- (vout_thread_t *)getVout
{
    return( p_vout );
}

- (void)scaleWindowWithFactor: (float)factor
{
    NSSize newsize;
    int i_corrected_height, i_corrected_width;
    NSPoint topleftbase;
    NSPoint topleftscreen;
    
    if ( !p_vout->b_fullscreen )
    {
        topleftbase.x = 0;
        topleftbase.y = [self frame].size.height;
        topleftscreen = [self convertBaseToScreen: topleftbase];
        
        if( p_vout->output.i_height * p_vout->output.i_aspect > 
                        p_vout->output.i_width * VOUT_ASPECT_FACTOR )
        {
            i_corrected_width = p_vout->output.i_height * p_vout->output.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->output.i_width * VOUT_ASPECT_FACTOR /
                                            p_vout->output.i_aspect;
            newsize.width = (int) ( p_vout->render.i_width * factor );
            newsize.height = (int) ( i_corrected_height * factor );
        }
    
        [self setContentSize: newsize];
        
        [self setFrameTopLeftPoint: topleftscreen];
        p_vout->i_changes |= VOUT_SIZE_CHANGE;
    }
}

- (void)toggleFloatOnTop
{
    if( config_GetInt( p_vout, "video-on-top" ) )
    {
        config_PutInt( p_vout, "video-on-top", 0 );
        [p_vout->p_sys->o_window setLevel: NSNormalWindowLevel];
    }
    else
    {
        config_PutInt( p_vout, "video-on-top", 1 );
        [p_vout->p_sys->o_window setLevel: NSStatusWindowLevel];
    }
}

- (void)toggleFullscreen
{
    config_PutInt(p_vout, "fullscreen", !p_vout->b_fullscreen);
    p_vout->i_changes |= VOUT_FULLSCREEN_CHANGE;
}