1 files changed, 73 insertions, 0 deletions
diff --git a/cmds/bootanimation/iot/BootParameters.h b/cmds/bootanimation/iot/BootParameters.h
new file mode 100644
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+++ b/cmds/bootanimation/iot/BootParameters.h
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+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef _BOOTANIMATION_BOOT_PARAMETERS_H_
+#define _BOOTANIMATION_BOOT_PARAMETERS_H_
+
+#include <list>
+#include <vector>
+
+#include <base/json/json_value_converter.h>
+#include <boot_action/boot_action.h>  // libandroidthings native API.
+
+namespace android {
+
+// Provides access to the parameters set by DeviceManager.reboot().
+class BootParameters {
+public:
+    // Constructor loads the parameters for this boot and swaps the param files
+    // to clear the parameters for next boot.
+    BootParameters();
+
+    // Returns true if volume/brightness were explicitly set on reboot.
+    bool hasVolume() const { return mVolume >= 0; }
+    bool hasBrightness() const { return mBrightness >= 0; }
+
+    // Returns volume/brightness in [0,1], or -1 if unset.
+    float getVolume() const { return mVolume; }
+    float getBrightness() const { return mBrightness; }
+
+    // Returns the additional boot parameters that were set on reboot.
+    const std::vector<ABootActionParameter>& getParameters() const { return mParameters; }
+
+private:
+    // Raw boot saved_parameters loaded from .json.
+    struct SavedBootParameters {
+        int brightness;
+        int volume;
+        ScopedVector<std::string> param_names;
+        ScopedVector<std::string> param_values;
+
+        SavedBootParameters();
+        static void RegisterJSONConverter(
+                ::base::JSONValueConverter<SavedBootParameters>* converter);
+    };
+
+    void loadParameters();
+
+    float mVolume = -1.f;
+    float mBrightness = -1.f;
+    std::vector<ABootActionParameter> mParameters;
+
+    // ABootActionParameter is just a raw pointer so we need to keep the
+    // original strings around to avoid losing them.
+    SavedBootParameters mRawParameters;
+};
+
+}  // namespace android
+
+
+#endif  // _BOOTANIMATION_BOOT_PARAMETERS_H_