SF: Redesign API to query display information
The DisplayInfo list returned by ISurfaceComposer for display configs
contains display information/state redundant across configs.
Extract config information to DisplayConfig, and repurpose DisplayInfo
for immutable information about a physical display. In a future CL, SF
will populate DisplayInfo with additional data (e.g. connection type,
EDID fields) on initial connection. DisplayConfigs retain the ability
to reload on subsequent connections. Introduce ui::DisplayState for
transactional state applicable to both physical and virtual displays.
Bug: 144601064
Test: dumpsys display
Change-Id: I72003e8ef71483ef483d0de85d28b859a6c9f5fc
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 62d47e1..c1d86e8 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -61,8 +61,10 @@
#include <renderengine/RenderEngine.h>
#include <ui/ColorSpace.h>
#include <ui/DebugUtils.h>
+#include <ui/DisplayConfig.h>
#include <ui/DisplayInfo.h>
#include <ui/DisplayStatInfo.h>
+#include <ui/DisplayState.h>
#include <ui/GraphicBufferAllocator.h>
#include <ui/PixelFormat.h>
#include <ui/UiConfig.h>
@@ -115,6 +117,7 @@
#include "android-base/parseint.h"
#include "android-base/stringprintf.h"
+#include <android/configuration.h>
#include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
#include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
#include <android/hardware/configstore/1.1/types.h>
@@ -182,6 +185,19 @@
bool mLocked;
};
+// TODO(b/141333600): Consolidate with HWC2::Display::Config::Builder::getDefaultDensity.
+constexpr float FALLBACK_DENSITY = ACONFIGURATION_DENSITY_TV / 160.f;
+
+float getDensityFromProperty(const char* property, bool required) {
+ char value[PROPERTY_VALUE_MAX];
+ const float density = property_get(property, value, nullptr) > 0 ? std::atof(value) : 0.f;
+ if (!density && required) {
+ ALOGE("%s must be defined as a build property", property);
+ return FALLBACK_DENSITY;
+ }
+ return density / 160.f;
+}
+
// Currently we only support V0_SRGB and DISPLAY_P3 as composition preference.
bool validateCompositionDataspace(Dataspace dataspace) {
return dataspace == Dataspace::V0_SRGB || dataspace == Dataspace::DISPLAY_P3;
@@ -249,7 +265,8 @@
mFrameTracer(std::make_unique<FrameTracer>()),
mEventQueue(mFactory.createMessageQueue()),
mCompositionEngine(mFactory.createCompositionEngine()),
- mPendingSyncInputWindows(false) {}
+ mInternalDisplayDensity(getDensityFromProperty("ro.sf.lcd_density", true)),
+ mEmulatedDisplayDensity(getDensityFromProperty("qemu.sf.lcd_density", false)) {}
SurfaceFlinger::SurfaceFlinger(Factory& factory) : SurfaceFlinger(factory, SkipInitialization) {
ALOGI("SurfaceFlinger is starting");
@@ -734,8 +751,56 @@
return NO_ERROR;
}
+status_t SurfaceFlinger::getDisplayState(const sp<IBinder>& displayToken, ui::DisplayState* state) {
+ if (!displayToken || !state) {
+ return BAD_VALUE;
+ }
+
+ Mutex::Autolock lock(mStateLock);
+
+ const auto display = getDisplayDeviceLocked(displayToken);
+ if (!display) {
+ return NAME_NOT_FOUND;
+ }
+
+ state->layerStack = display->getLayerStack();
+ state->orientation = display->getOrientation();
+
+ const Rect viewport = display->getViewport();
+ state->viewport = viewport.isValid() ? viewport.getSize() : display->getSize();
+
+ return NO_ERROR;
+}
+
+status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& displayToken, DisplayInfo* info) {
+ if (!displayToken || !info) {
+ return BAD_VALUE;
+ }
+
+ Mutex::Autolock lock(mStateLock);
+
+ const auto display = getDisplayDeviceLocked(displayToken);
+ if (!display) {
+ return NAME_NOT_FOUND;
+ }
+
+ if (display->isVirtual()) {
+ return INVALID_OPERATION;
+ }
+
+ if (mEmulatedDisplayDensity) {
+ info->density = mEmulatedDisplayDensity;
+ } else {
+ info->density = display->isPrimary() ? mInternalDisplayDensity : FALLBACK_DENSITY;
+ }
+
+ info->secure = display->isSecure();
+
+ return NO_ERROR;
+}
+
status_t SurfaceFlinger::getDisplayConfigs(const sp<IBinder>& displayToken,
- Vector<DisplayInfo>* configs) {
+ Vector<DisplayConfig>* configs) {
if (!displayToken || !configs) {
return BAD_VALUE;
}
@@ -747,78 +812,42 @@
return NAME_NOT_FOUND;
}
- // TODO: Not sure if display density should handled by SF any longer
- class Density {
- static float getDensityFromProperty(char const* propName) {
- char property[PROPERTY_VALUE_MAX];
- float density = 0.0f;
- if (property_get(propName, property, nullptr) > 0) {
- density = strtof(property, nullptr);
- }
- return density;
- }
- public:
- static float getEmuDensity() {
- return getDensityFromProperty("qemu.sf.lcd_density"); }
- static float getBuildDensity() {
- return getDensityFromProperty("ro.sf.lcd_density"); }
- };
+ const bool isInternal = (displayId == getInternalDisplayIdLocked());
configs->clear();
for (const auto& hwConfig : getHwComposer().getConfigs(*displayId)) {
- DisplayInfo info = DisplayInfo();
+ DisplayConfig config;
- float xdpi = hwConfig->getDpiX();
- float ydpi = hwConfig->getDpiY();
+ auto width = hwConfig->getWidth();
+ auto height = hwConfig->getHeight();
- info.w = hwConfig->getWidth();
- info.h = hwConfig->getHeight();
- // Default display viewport to display width and height
- info.viewportW = info.w;
- info.viewportH = info.h;
+ auto xDpi = hwConfig->getDpiX();
+ auto yDpi = hwConfig->getDpiY();
- if (displayId == getInternalDisplayIdLocked()) {
- // The density of the device is provided by a build property
- float density = Density::getBuildDensity() / 160.0f;
- if (density == 0) {
- // the build doesn't provide a density -- this is wrong!
- // use xdpi instead
- ALOGE("ro.sf.lcd_density must be defined as a build property");
- density = xdpi / 160.0f;
- }
- if (Density::getEmuDensity()) {
- // if "qemu.sf.lcd_density" is specified, it overrides everything
- xdpi = ydpi = density = Density::getEmuDensity();
- density /= 160.0f;
- }
- info.density = density;
-
- const auto display = getDefaultDisplayDeviceLocked();
- info.orientation = display->getOrientation();
-
- // This is for screenrecord
- const Rect viewport = display->getViewport();
- if (viewport.isValid()) {
- info.viewportW = uint32_t(viewport.getWidth());
- info.viewportH = uint32_t(viewport.getHeight());
- }
- info.layerStack = display->getLayerStack();
- } else {
- // TODO: where should this value come from?
- static const int TV_DENSITY = 213;
- info.density = TV_DENSITY / 160.0f;
-
- const auto display = getDisplayDeviceLocked(displayToken);
- info.layerStack = display->getLayerStack();
+ if (isInternal &&
+ (internalDisplayOrientation == ui::ROTATION_90 ||
+ internalDisplayOrientation == ui::ROTATION_270)) {
+ std::swap(width, height);
+ std::swap(xDpi, yDpi);
}
- info.xdpi = xdpi;
- info.ydpi = ydpi;
- info.fps = 1e9 / hwConfig->getVsyncPeriod();
+ config.resolution = ui::Size(width, height);
- const auto offset = mPhaseConfiguration->getOffsetsForRefreshRate(info.fps);
- info.appVsyncOffset = offset.late.app;
+ if (mEmulatedDisplayDensity) {
+ config.xDpi = mEmulatedDisplayDensity;
+ config.yDpi = mEmulatedDisplayDensity;
+ } else {
+ config.xDpi = xDpi;
+ config.yDpi = yDpi;
+ }
+
+ const nsecs_t period = hwConfig->getVsyncPeriod();
+ config.refreshRate = 1e9f / period;
+
+ const auto offsets = mPhaseConfiguration->getOffsetsForRefreshRate(config.refreshRate);
+ config.appVsyncOffset = offsets.late.app;
+ config.sfVsyncOffset = offsets.late.sf;
// This is how far in advance a buffer must be queued for
// presentation at a given time. If you want a buffer to appear
@@ -832,18 +861,9 @@
//
// We add an additional 1ms to allow for processing time and
// differences between the ideal and actual refresh rate.
- info.presentationDeadline = hwConfig->getVsyncPeriod() - offset.late.sf + 1000000;
+ config.presentationDeadline = period - config.sfVsyncOffset + 1000000;
- // All non-virtual displays are currently considered secure.
- info.secure = true;
-
- if (displayId == getInternalDisplayIdLocked() &&
- (internalDisplayOrientation == ui::ROTATION_90 ||
- internalDisplayOrientation == ui::ROTATION_270)) {
- std::swap(info.w, info.h);
- }
-
- configs->push_back(info);
+ configs->push_back(config);
}
return NO_ERROR;
@@ -4614,7 +4634,9 @@
case GET_PHYSICAL_DISPLAY_TOKEN:
case GET_DISPLAY_COLOR_MODES:
case GET_DISPLAY_NATIVE_PRIMARIES:
+ case GET_DISPLAY_INFO:
case GET_DISPLAY_CONFIGS:
+ case GET_DISPLAY_STATE:
case GET_DISPLAY_STATS:
case GET_SUPPORTED_FRAME_TIMESTAMPS:
// Calling setTransactionState is safe, because you need to have been
@@ -4644,12 +4666,6 @@
}
return OK;
}
- // The following codes are deprecated and should never be allowed to access SF.
- case CONNECT_DISPLAY_UNUSED:
- case CREATE_GRAPHIC_BUFFER_ALLOC_UNUSED: {
- ALOGE("Attempting to access SurfaceFlinger with unused code: %u", code);
- return PERMISSION_DENIED;
- }
case CAPTURE_SCREEN_BY_ID: {
IPCThreadState* ipc = IPCThreadState::self();
const int uid = ipc->getCallingUid();