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ui/cocoa: Use the pixman image directly in switchSurface

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Currently the switchSurface method takes a DisplaySurface. We want
to change our DisplayChangeListener's dpy_gfx_switch callback
to do this work asynchronously on a different thread. The caller
of the switch callback will free the old DisplaySurface
immediately the callback returns, so to ensure that the
other thread doesn't access freed data we need to switch
to using the underlying pixman image instead. The pixman
image is reference counted, so we will be able to take
a reference to it to avoid it vanishing too early.

In this commit we only change the switchSurface method
to take a pixman image, and keep the flow of control
synchronous for now.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Tested-by: Roman Bolshakov <r.bolshakov@yadro.com>
Message-id: 20190225102433.22401-3-peter.maydell@linaro.org
Message-id: 20190214102816.3393-3-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2019-02-25 10:24:28 +00:00
parent 31819e9509
commit 72a3e316da
1 changed files with 9 additions and 8 deletions
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17
ui/cocoa.m
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@ -315,7 +315,7 @@ static void handleAnyDeviceErrors(Error * err)
BOOL isAbsoluteEnabled;
BOOL isMouseDeassociated;
}
- (void) switchSurface:(DisplaySurface *)surface;
- (void) switchSurface:(pixman_image_t *)image;
- (void) grabMouse;
- (void) ungrabMouse;
- (void) toggleFullScreen:(id)sender;
@ -495,12 +495,13 @@ QemuCocoaView *cocoaView;
}
}
- (void) switchSurface:(DisplaySurface *)surface
- (void) switchSurface:(pixman_image_t *)image
{
COCOA_DEBUG("QemuCocoaView: switchSurface\n");
int w = surface_width(surface);
int h = surface_height(surface);
int w = pixman_image_get_width(image);
int h = pixman_image_get_height(image);
pixman_format_code_t image_format = pixman_image_get_format(image);
/* cdx == 0 means this is our very first surface, in which case we need
* to recalculate the content dimensions even if it happens to be the size
* of the initial empty window.
@ -522,10 +523,10 @@ QemuCocoaView *cocoaView;
CGDataProviderRelease(dataProviderRef);
//sync host window color space with guests
screen.bitsPerPixel = surface_bits_per_pixel(surface);
screen.bitsPerComponent = surface_bytes_per_pixel(surface) * 2;
screen.bitsPerPixel = PIXMAN_FORMAT_BPP(image_format);
screen.bitsPerComponent = DIV_ROUND_UP(screen.bitsPerPixel, 8) * 2;
dataProviderRef = CGDataProviderCreateWithData(NULL, surface_data(surface), w * 4 * h, NULL);
dataProviderRef = CGDataProviderCreateWithData(NULL, pixman_image_get_data(image), w * 4 * h, NULL);
// update windows
if (isFullscreen) {
@ -1629,7 +1630,7 @@ static void cocoa_switch(DisplayChangeListener *dcl,
NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
COCOA_DEBUG("qemu_cocoa: cocoa_switch\n");
[cocoaView switchSurface:surface];
[cocoaView switchSurface:surface->image];
[pool release];
}