voutgl.m

VLC Player Source Code

#undef o_glview
}

- (id) initWithVout: (vout_thread_t *) vout
{
    /* Must be called from main thread:
     * "The NSView class is generally thread-safe, with a few exceptions. You
     * should create, destroy, resize, move, and perform other operations on NSView
     * objects only from the main thread of an application. Drawing from secondary
     * threads is thread-safe as long as you bracket drawing calls with calls to
     * lockFocusIfCanDraw and unlockFocus." Cocoa Thread Safety */

    p_vout = vout;

    NSOpenGLPixelFormatAttribute attribs[] =
    {
        NSOpenGLPFADoubleBuffer,
        NSOpenGLPFAAccelerated,
        NSOpenGLPFANoRecovery,
        NSOpenGLPFAColorSize, 24,
        NSOpenGLPFAAlphaSize, 8,
        NSOpenGLPFADepthSize, 24,
        NSOpenGLPFAWindow,
        0
    };

    NSOpenGLPixelFormat * fmt = [[NSOpenGLPixelFormat alloc]
        initWithAttributes: attribs];

    if( !fmt )
    {
        msg_Warn( p_vout, "could not create OpenGL video output" );
        return nil;
    }

    self = [super initWithFrame: NSMakeRect(0,0,10,10) pixelFormat: fmt];
    [fmt release];

    [[self openGLContext] makeCurrentContext];
    [[self openGLContext] update];

    /* Swap buffers only during the vertical retrace of the monitor.
       http://developer.apple.com/documentation/GraphicsImaging/
       Conceptual/OpenGL/chap5/chapter_5_section_44.html */
    GLint params[] = { 1 };
    CGLSetParameter( CGLGetCurrentContext(), kCGLCPSwapInterval, params );
    return self;
}

- (BOOL)mouseDownCanMoveWindow
{
    return YES;
}

- (void) reshape
{
    int x, y;
    vlc_value_t val;

    Lock( p_vout );
    NSRect bounds = [self bounds];

    var_Get( p_vout, "macosx-stretch", &val );
    if( val.b_bool )
    {
        x = bounds.size.width;
        y = bounds.size.height;
    }
    else if( bounds.size.height * p_vout->fmt_in.i_visible_width *
             p_vout->fmt_in.i_sar_num <
             bounds.size.width * p_vout->fmt_in.i_visible_height *
             p_vout->fmt_in.i_sar_den )
    {
        x = ( bounds.size.height * p_vout->fmt_in.i_visible_width *
              p_vout->fmt_in.i_sar_num ) /
            ( p_vout->fmt_in.i_visible_height * p_vout->fmt_in.i_sar_den);

        y = bounds.size.height;
    }
    else
    {
        x = bounds.size.width;
        y = ( bounds.size.width * p_vout->fmt_in.i_visible_height *
              p_vout->fmt_in.i_sar_den) /
            ( p_vout->fmt_in.i_visible_width * p_vout->fmt_in.i_sar_num  );
    }

    glViewport( ( bounds.size.width - x ) / 2,
                ( bounds.size.height - y ) / 2, x, y );

    [super reshape];

    if( p_vout->p_sys->b_got_frame )
    {
        /* Ask the opengl module to redraw */
        vout_thread_t * p_parent;
        p_parent = (vout_thread_t *) p_vout->p_parent;
        Unlock( p_vout );
        if( p_parent && p_parent->pf_display )
        {
            p_parent->pf_display( p_parent, NULL );
        }
    }
    else
    {
        glClear( GL_COLOR_BUFFER_BIT );
        Unlock( p_vout );
    }
}

- (void) update
{
    Lock( p_vout );
    [super update];
    Unlock( p_vout );
}

- (void) drawRect: (NSRect) rect
{
    Lock( p_vout );
    [[p_vout->p_sys->o_glview openGLContext] flushBuffer];
    [super drawRect:rect];
    Unlock( p_vout );
}

@end

/*****************************************************************************
 * embedded AGL context implementation
 *****************************************************************************/

static void aglSetViewport( vout_thread_t *p_vout, Rect viewBounds, Rect clipBounds );
static void aglReshape( vout_thread_t * p_vout );
static OSStatus WindowEventHandler(EventHandlerCallRef nextHandler, EventRef event, void *userData);

static int aglInit( vout_thread_t * p_vout )
{
    vlc_value_t val;

    Rect viewBounds;
    Rect clipBounds;
 
    var_Get( p_vout->p_libvlc, "drawable", &val );
    p_vout->p_sys->agl_drawable = (AGLDrawable)val.i_int;
    aglSetDrawable(p_vout->p_sys->agl_ctx, p_vout->p_sys->agl_drawable);

    var_Get( p_vout->p_libvlc, "drawable-view-top", &val );
    viewBounds.top = val.i_int;
    var_Get( p_vout->p_libvlc, "drawable-view-left", &val );
    viewBounds.left = val.i_int;
    var_Get( p_vout->p_libvlc, "drawable-view-bottom", &val );
    viewBounds.bottom = val.i_int;
    var_Get( p_vout->p_libvlc, "drawable-view-right", &val );
    viewBounds.right = val.i_int;
    var_Get( p_vout->p_libvlc, "drawable-clip-top", &val );
    clipBounds.top = val.i_int;
    var_Get( p_vout->p_libvlc, "drawable-clip-left", &val );
    clipBounds.left = val.i_int;
    var_Get( p_vout->p_libvlc, "drawable-clip-bottom", &val );
    clipBounds.bottom = val.i_int;
    var_Get( p_vout->p_libvlc, "drawable-clip-right", &val );
    clipBounds.right = val.i_int;

    p_vout->p_sys->b_clipped_out = (clipBounds.top == clipBounds.bottom)
                                 || (clipBounds.left == clipBounds.right);
    if( ! p_vout->p_sys->b_clipped_out )
    {
        aglLock(p_vout);
        aglSetViewport(p_vout, viewBounds, clipBounds);
        aglReshape(p_vout);
        aglUnlock(p_vout);
    }
    p_vout->p_sys->clipBounds = clipBounds;
    p_vout->p_sys->viewBounds = viewBounds;

    return VLC_SUCCESS;
}

static void aglEnd( vout_thread_t * p_vout )
{
    aglSetCurrentContext(NULL);
    if( p_vout->p_sys->theWindow ) DisposeWindow( p_vout->p_sys->theWindow );
}

static void aglReshape( vout_thread_t * p_vout )
{
    unsigned int x, y;
    unsigned int i_height = p_vout->p_sys->i_height;
    unsigned int i_width  = p_vout->p_sys->i_width;

    vout_PlacePicture(p_vout, i_width, i_height, &x, &y, &i_width, &i_height);

    glViewport( p_vout->p_sys->i_offx + x, p_vout->p_sys->i_offy + y, i_width, i_height );

    if( p_vout->p_sys->b_got_frame )
    {
        /* Ask the opengl module to redraw */
        vout_thread_t * p_parent;
        p_parent = (vout_thread_t *) p_vout->p_parent;
        if( p_parent && p_parent->pf_display )
        {
            p_parent->pf_display( p_parent, NULL );
        }
    }
    else
    {
        glClear( GL_COLOR_BUFFER_BIT );
    }
}

/* private event class */
enum
{
    kEventClassVLCPlugin = 'vlcp',
};
/* private event kinds */
enum
{
    kEventVLCPluginShowFullscreen = 32768,
    kEventVLCPluginHideFullscreen,
};

static void sendEventToMainThread(EventTargetRef target, UInt32 class, UInt32 kind)
{
    EventRef myEvent;
    if( noErr == CreateEvent(NULL, class, kind, 0, kEventAttributeNone, &myEvent) )
    {
        if( noErr == SetEventParameter(myEvent, kEventParamPostTarget, typeEventTargetRef, sizeof(EventTargetRef), &target) )
        {
            PostEventToQueue(GetMainEventQueue(), myEvent, kEventPriorityStandard);
        }
        ReleaseEvent(myEvent);
    }
}

static int aglManage( vout_thread_t * p_vout )
{
    if( p_vout->i_changes & VOUT_ASPECT_CHANGE )
    {
        aglLock( p_vout );
        aglReshape(p_vout);
        aglUnlock( p_vout );
        p_vout->i_changes &= ~VOUT_ASPECT_CHANGE;
    }
    if( p_vout->i_changes & VOUT_CROP_CHANGE )
    {
        aglLock( p_vout );
        aglReshape(p_vout);
        aglUnlock( p_vout );
        p_vout->i_changes &= ~VOUT_CROP_CHANGE;
    }
    if( p_vout->i_changes & VOUT_FULLSCREEN_CHANGE )
    {
        aglSetDrawable(p_vout->p_sys->agl_ctx, NULL);
        aglLock( p_vout );
        if( p_vout->b_fullscreen )
        {
            /* Close the fullscreen window and resume normal drawing */
            vlc_value_t val;
            Rect viewBounds;
            Rect clipBounds;

            var_Get( p_vout->p_libvlc, "drawable", &val );
            p_vout->p_sys->agl_drawable = (AGLDrawable)val.i_int;
            aglSetDrawable(p_vout->p_sys->agl_ctx, p_vout->p_sys->agl_drawable);

            var_Get( p_vout->p_libvlc, "drawable-view-top", &val );
            viewBounds.top = val.i_int;
            var_Get( p_vout->p_libvlc, "drawable-view-left", &val );
            viewBounds.left = val.i_int;
            var_Get( p_vout->p_libvlc, "drawable-view-bottom", &val );
            viewBounds.bottom = val.i_int;
            var_Get( p_vout->p_libvlc, "drawable-view-right", &val );
            viewBounds.right = val.i_int;
            var_Get( p_vout->p_libvlc, "drawable-clip-top", &val );
            clipBounds.top = val.i_int;
            var_Get( p_vout->p_libvlc, "drawable-clip-left", &val );
            clipBounds.left = val.i_int;
            var_Get( p_vout->p_libvlc, "drawable-clip-bottom", &val );
            clipBounds.bottom = val.i_int;
            var_Get( p_vout->p_libvlc, "drawable-clip-right", &val );
            clipBounds.right = val.i_int;

            aglSetCurrentContext(p_vout->p_sys->agl_ctx);
            aglSetViewport(p_vout, viewBounds, clipBounds);

            /* Most Carbon APIs are not thread-safe, therefore delagate some GUI visibilty update to the main thread */
            sendEventToMainThread(GetWindowEventTarget(p_vout->p_sys->theWindow), kEventClassVLCPlugin, kEventVLCPluginHideFullscreen);
        }
        else
        {
            Rect deviceRect;
 
            GDHandle deviceHdl = GetMainDevice();
            deviceRect = (*deviceHdl)->gdRect;
 
            if( !p_vout->p_sys->theWindow )
            {
                /* Create a window */
                WindowAttributes    windowAttrs;

                windowAttrs = kWindowStandardDocumentAttributes
                            | kWindowStandardHandlerAttribute
                            | kWindowLiveResizeAttribute
                            | kWindowNoShadowAttribute;
 
                windowAttrs &= (~kWindowResizableAttribute);

                CreateNewWindow(kDocumentWindowClass, windowAttrs, &deviceRect, &p_vout->p_sys->theWindow);
                if( !p_vout->p_sys->winGroup )
                {
                    CreateWindowGroup(0, &p_vout->p_sys->winGroup);
                    SetWindowGroup(p_vout->p_sys->theWindow, p_vout->p_sys->winGroup);
                    SetWindowGroupParent( p_vout->p_sys->winGroup, GetWindowGroupOfClass(kDocumentWindowClass) ) ;
                }
 
                // Window title
                CFStringRef titleKey    = CFSTR("Fullscreen VLC media plugin");
                CFStringRef windowTitle = CFCopyLocalizedString(titleKey, NULL);
                SetWindowTitleWithCFString(p_vout->p_sys->theWindow, windowTitle);
                CFRelease(titleKey);
                CFRelease(windowTitle);
 
                //Install event handler
                static const EventTypeSpec win_events[] = {
                    { kEventClassMouse, kEventMouseDown },
                    { kEventClassMouse, kEventMouseMoved },
                    { kEventClassMouse, kEventMouseUp },
                    { kEventClassWindow, kEventWindowClosed },
                    { kEventClassWindow, kEventWindowBoundsChanged },
                    { kEventClassCommand, kEventCommandProcess },
                    { kEventClassVLCPlugin, kEventVLCPluginShowFullscreen },
                    { kEventClassVLCPlugin, kEventVLCPluginHideFullscreen },
                };
                InstallWindowEventHandler (p_vout->p_sys->theWindow, NewEventHandlerUPP (WindowEventHandler), GetEventTypeCount(win_events), win_events, p_vout, NULL);
            }
            else
            {
                /* just in case device resolution changed */
                SetWindowBounds(p_vout->p_sys->theWindow, kWindowContentRgn, &deviceRect);
            }
            glClear( GL_COLOR_BUFFER_BIT );
            p_vout->p_sys->agl_drawable = (AGLDrawable)GetWindowPort(p_vout->p_sys->theWindow);
            aglSetDrawable(p_vout->p_sys->agl_ctx, p_vout->p_sys->agl_drawable);
            aglSetCurrentContext(p_vout->p_sys->agl_ctx);
            aglSetViewport(p_vout, deviceRect, deviceRect);
            //aglSetFullScreen(p_vout->p_sys->agl_ctx, device_width, device_height, 0, 0);

            /* Most Carbon APIs are not thread-safe, therefore delagate some GUI visibilty update to the main thread */
            sendEventToMainThread(GetWindowEventTarget(p_vout->p_sys->theWindow), kEventClassVLCPlugin, kEventVLCPluginShowFullscreen);
        }
        aglReshape(p_vout);
        aglUnlock( p_vout );
        p_vout->b_fullscreen = !p_vout->b_fullscreen;
        p_vout->i_changes &= ~VOUT_FULLSCREEN_CHANGE;
    }
    return VLC_SUCCESS;
}

static int aglControl( vout_thread_t *p_vout, int i_query, va_list args )
{
    switch( i_query )
    {