SF: Add dumpsys flags to dump displays

Dump display configuration (--displays) and composition state (--comp-
displays) separately.

Use consistent formatting. Remove noise, e.g. repetitive display modes,
physical display state that is expectedly missing for virtual displays.

Bug: 182939859
Test: dumpsys SurfaceFlinger --displays
Test: dumpsys SurfaceFlinger --comp-displays
Change-Id: I787eedb82d76c74363e653a648ae88699096cc47
diff --git a/services/surfaceflinger/CompositionEngine/src/Display.cpp b/services/surfaceflinger/CompositionEngine/src/Display.cpp
index f545886..b79b46b 100644
--- a/services/surfaceflinger/CompositionEngine/src/Display.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Display.cpp
@@ -131,15 +131,11 @@
 }
 
 void Display::dump(std::string& out) const {
-    using android::base::StringAppendF;
+    const char* const type = isVirtual() ? "virtual" : "physical";
+    base::StringAppendF(&out, "Display %s (%s, \"%s\")", to_string(mId).c_str(), type,
+                        getName().c_str());
 
-    StringAppendF(&out, "   Composition Display State: [\"%s\"]", getName().c_str());
-
-    out.append("\n   ");
-    dumpVal(out, "isVirtual", isVirtual());
-    dumpVal(out, "DisplayId", to_string(mId));
-    out.append("\n");
-
+    out.append("\n   Composition Display State:\n");
     Output::dumpBase(out);
 }
 
diff --git a/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp b/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
index 01c368d..290c710 100644
--- a/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/DumpHelpers.cpp
@@ -89,7 +89,6 @@
 
 void dumpVal(std::string& out, const char* name, const ui::Transform& transform) {
     transform.dump(out, name);
-    out.append(" ");
 }
 
 void dumpVal(std::string& out, const char* name, const mat4& tr) {
@@ -99,7 +98,7 @@
                   "[%0.3f,%0.3f,%0.3f,%0.3f]"
                   "[%0.3f,%0.3f,%0.3f,%0.3f]"
                   "[%0.3f,%0.3f,%0.3f,%0.3f]"
-                  "[%0.3f,%0.3f,%0.3f,%0.3f]]",
+                  "[%0.3f,%0.3f,%0.3f,%0.3f]] ",
                   name,
                   tr[0][0], tr[1][0], tr[2][0], tr[3][0],
                   tr[0][1], tr[1][1], tr[2][1], tr[3][1],
@@ -109,9 +108,9 @@
 }
 
 void dumpVal(std::string& out, const char* name, const StretchEffect& effect) {
-    StringAppendF(&out, "%s={ width =%f, height = %f, vec=(%f, %f), max=(%f, %f) } ", name,
-                  effect.width, effect.height,
-                  effect.vectorX, effect.vectorY, effect.maxAmountX, effect.maxAmountY);
+    StringAppendF(&out, "%s={width=%f, height=%f, vec=(%f, %f), max=(%f, %f)} ", name, effect.width,
+                  effect.height, effect.vectorX, effect.vectorY, effect.maxAmountX,
+                  effect.maxAmountY);
 }
 
 } // namespace android::compositionengine::impl
diff --git a/services/surfaceflinger/CompositionEngine/src/Output.cpp b/services/surfaceflinger/CompositionEngine/src/Output.cpp
index e99b70f..c92c569 100644
--- a/services/surfaceflinger/CompositionEngine/src/Output.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/Output.cpp
@@ -294,17 +294,15 @@
 }
 
 void Output::dump(std::string& out) const {
-    using android::base::StringAppendF;
-
-    StringAppendF(&out, "   Composition Output State: [\"%s\"]", mName.c_str());
-
-    out.append("\n   ");
+    base::StringAppendF(&out, "Output \"%s\"", mName.c_str());
+    out.append("\n   Composition Output State:\n");
 
     dumpBase(out);
 }
 
 void Output::dumpBase(std::string& out) const {
     dumpState(out);
+    out += '\n';
 
     if (mDisplayColorProfile) {
         mDisplayColorProfile->dump(out);
@@ -312,13 +310,15 @@
         out.append("    No display color profile!\n");
     }
 
+    out += '\n';
+
     if (mRenderSurface) {
         mRenderSurface->dump(out);
     } else {
         out.append("    No render surface!\n");
     }
 
-    android::base::StringAppendF(&out, "\n   %zu Layers\n", getOutputLayerCount());
+    base::StringAppendF(&out, "\n   %zu Layers\n", getOutputLayerCount());
     for (const auto* outputLayer : getOutputLayersOrderedByZ()) {
         if (!outputLayer) {
             continue;
@@ -329,7 +329,7 @@
 
 void Output::dumpPlannerInfo(const Vector<String16>& args, std::string& out) const {
     if (!mPlanner) {
-        base::StringAppendF(&out, "Planner is disabled\n");
+        out.append("Planner is disabled\n");
         return;
     }
     base::StringAppendF(&out, "Planner info for display [%s]\n", mName.c_str());
diff --git a/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp b/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp
index 7188281..3b85e3b 100644
--- a/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp
+++ b/services/surfaceflinger/CompositionEngine/src/OutputCompositionState.cpp
@@ -14,40 +14,30 @@
  * limitations under the License.
  */
 
+#include <ftl/enum.h>
+
 #include <compositionengine/impl/DumpHelpers.h>
 #include <compositionengine/impl/OutputCompositionState.h>
 
 namespace android::compositionengine::impl {
-using CompositionStrategyPredictionState =
-        OutputCompositionState::CompositionStrategyPredictionState;
-
-std::string toString(CompositionStrategyPredictionState state) {
-    switch (state) {
-        case CompositionStrategyPredictionState::DISABLED:
-            return "Disabled";
-        case CompositionStrategyPredictionState::SUCCESS:
-            return "Success";
-        case CompositionStrategyPredictionState::FAIL:
-            return "Fail";
-    }
-}
 
 void OutputCompositionState::dump(std::string& out) const {
     out.append("   ");
     dumpVal(out, "isEnabled", isEnabled);
     dumpVal(out, "isSecure", isSecure);
-
-    dumpVal(out, "usesClientComposition", usesClientComposition);
     dumpVal(out, "usesDeviceComposition", usesDeviceComposition);
+
+    out.append("\n   ");
+    dumpVal(out, "usesClientComposition", usesClientComposition);
     dumpVal(out, "flipClientTarget", flipClientTarget);
     dumpVal(out, "reusedClientComposition", reusedClientComposition);
-    dumpVal(out, "layerFilter", layerFilter);
 
     out.append("\n   ");
-
+    dumpVal(out, "layerFilter", layerFilter);
+    out.append("\n   ");
     dumpVal(out, "transform", transform);
 
-    out.append("\n   ");
+    out.append("   "); // ui::Transform::dump appends EOL.
     dumpVal(out, "layerStackSpace", to_string(layerStackSpace));
     out.append("\n   ");
     dumpVal(out, "framebufferSpace", to_string(framebufferSpace));
@@ -59,19 +49,24 @@
     dumpVal(out, "needsFiltering", needsFiltering);
 
     out.append("\n   ");
-
     dumpVal(out, "colorMode", toString(colorMode), colorMode);
     dumpVal(out, "renderIntent", toString(renderIntent), renderIntent);
     dumpVal(out, "dataspace", toString(dataspace), dataspace);
+    dumpVal(out, "targetDataspace", toString(targetDataspace), targetDataspace);
+
+    out.append("\n   ");
     dumpVal(out, "colorTransformMatrix", colorTransformMatrix);
-    dumpVal(out, "target dataspace", toString(targetDataspace), targetDataspace);
+
+    out.append("\n   ");
     dumpVal(out, "displayBrightnessNits", displayBrightnessNits);
     dumpVal(out, "sdrWhitePointNits", sdrWhitePointNits);
     dumpVal(out, "clientTargetBrightness", clientTargetBrightness);
     dumpVal(out, "displayBrightness", displayBrightness);
-    dumpVal(out, "compositionStrategyPredictionState", toString(strategyPrediction));
 
-    out.append("\n");
+    out.append("\n   ");
+    dumpVal(out, "compositionStrategyPredictionState", ftl::enum_string(strategyPrediction));
+
+    out += '\n';
 }
 
 } // namespace android::compositionengine::impl