camera: Use device level ZSL if supported

If enableZsl is enabled in still capture template, disable ZSL in
the framework and use device level ZSL instead.

Test: CTS
Bug: 64117056
Change-Id: Ia7f7e3b0212419a12bc1ccb3f708f527b8a0b12c

services/camera/libcameraservice/api1/Camera2Client.cpp

@@ -72,6 +72,20 @@ status_t Camera2Client::initialize(sp<CameraProviderManager> manager) {
     return initializeImpl(manager);
 }
 
+bool Camera2Client::isZslEnabledInStillTemplate() {
+    bool zslEnabled = false;
+    CameraMetadata stillTemplate;
+    status_t res = mDevice->createDefaultRequest(CAMERA2_TEMPLATE_STILL_CAPTURE, &stillTemplate);
+    if (res == OK) {
+        camera_metadata_entry_t enableZsl = stillTemplate.find(ANDROID_CONTROL_ENABLE_ZSL);
+        if (enableZsl.count == 1) {
+            zslEnabled = (enableZsl.data.u8[0] == ANDROID_CONTROL_ENABLE_ZSL_TRUE);
+        }
+    }
+
+    return zslEnabled;
+}
+
 template<typename TProviderPtr>
 status_t Camera2Client::initializeImpl(TProviderPtr providerPtr)
 {
@@ -93,6 +107,8 @@ status_t Camera2Client::initializeImpl(TProviderPtr providerPtr)
                     __FUNCTION__, mCameraId, strerror(-res), res);
             return NO_INIT;
         }
+
+        l.mParameters.isDeviceZslSupported = isZslEnabledInStillTemplate();
     }
 
     String8 threadName;

services/camera/libcameraservice/api1/Camera2Client.h

@@ -224,6 +224,8 @@ private:
 
     template<typename TProviderPtr>
     status_t initializeImpl(TProviderPtr providerPtr);
+
+    bool isZslEnabledInStillTemplate();
 };
 
 }; // namespace android

services/camera/libcameraservice/api1/client2/Parameters.cpp

@@ -954,7 +954,8 @@ status_t Parameters::initialize(const CameraMetadata *info, int deviceVersion) {
         }
     }
 
-    if (slowJpegMode || property_get_bool("camera.disable_zsl_mode", false)) {
+    if (isDeviceZslSupported || slowJpegMode ||
+            property_get_bool("camera.disable_zsl_mode", false)) {
         ALOGI("Camera %d: Disabling ZSL mode", cameraId);
         allowZslMode = false;
     } else {
@@ -1997,7 +1998,8 @@ status_t Parameters::set(const String8& paramString) {
     if (previewFpsRange[1] > 1e9/minFrameDurationNs + FPS_MARGIN) {
         slowJpegMode = true;
     }
-    if (slowJpegMode || property_get_bool("camera.disable_zsl_mode", false)) {
+    if (isDeviceZslSupported || slowJpegMode ||
+            property_get_bool("camera.disable_zsl_mode", false)) {
         allowZslMode = false;
     } else {
         allowZslMode = isZslReprocessPresent;

services/camera/libcameraservice/api1/client2/Parameters.h

@@ -175,6 +175,8 @@ struct Parameters {
     bool slowJpegMode;
     // Whether ZSL reprocess is supported by the device.
     bool isZslReprocessPresent;
+    // Whether the device supports enableZsl.
+    bool isDeviceZslSupported;
 
     // Overall camera state
     enum State {