SF: Generalize display management
This CL enables SF to manage an arbitrary number of physical displays.
Previously, displays were identified by 32-bit IDs, where 0 is the
internal display, 1 is the external display, [2, INT32_MAX] are HWC
virtual displays, and -1 represents an invalid display or a non-HWC
virtual display.
If the HWC provides display identification data, SF now allocates 64-bit
display IDs for physical and HWC virtual displays. The IDs are expressed
using an option type, where the null value represents an invalid display
or non-HWC virtual display. Without HWC support, SF falls back to legacy
behavior with at most two physical displays.
The dynamic display IDs are translated to the legacy constants at the
SF/DMS boundary, as a stopgap until the framework is generalized.
Bug: 74619554
Test: Connect 3 displays and create virtual displays on HWC 2.2 and 2.3
Test: libsurfaceflinger_unittest
Test: SurfaceFlinger_test
Change-Id: I0a4a57b6ab7de2dbcf719a4eb1a19a133694012e
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.h b/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
index 0fd8e9e..2431dfd 100644
--- a/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
@@ -17,6 +17,7 @@
#ifndef ANDROID_SF_FRAMEBUFFER_SURFACE_H
#define ANDROID_SF_FRAMEBUFFER_SURFACE_H
+#include "DisplayIdentification.h"
#include "DisplaySurface.h"
#include "HWComposerBufferCache.h"
@@ -38,7 +39,8 @@
class FramebufferSurface : public ConsumerBase,
public DisplaySurface {
public:
- FramebufferSurface(HWComposer& hwc, int disp, const sp<IGraphicBufferConsumer>& consumer);
+ FramebufferSurface(HWComposer& hwc, DisplayId displayId,
+ const sp<IGraphicBufferConsumer>& consumer);
virtual status_t beginFrame(bool mustRecompose);
virtual status_t prepareFrame(CompositionType compositionType);
@@ -63,8 +65,7 @@
status_t nextBuffer(uint32_t& outSlot, sp<GraphicBuffer>& outBuffer,
sp<Fence>& outFence, ui::Dataspace& outDataspace);
- // mDisplayType must match one of the HWC display types
- int mDisplayType;
+ const DisplayId mDisplayId;
// mCurrentBufferIndex is the slot index of the current buffer or
// INVALID_BUFFER_SLOT to indicate that either there is no current buffer