audio/aidl/android/hardware/audio/effect/state.gv

/*
 * Copyright (C) 2022 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.
 */

// To render: "dot -Tpng state.gv -o state.png"
digraph effect_state_machine {
    node [shape=point style=filled fillcolor=black width=0.5] I;
    node [shape=doublecircle] F;
    node [shape=oval width=1];
    node [fillcolor=lightgreen] INIT;
    node [fillcolor=lightblue] IDLE;
    node [fillcolor=lightyellow] PROCESSING;

    I -> INIT [label="IFactory.createEffect" labelfontcolor="navy"];
    INIT -> F [label="IFactory.destroyEffect"];
    INIT -> IDLE [label="open()" labelfontcolor="lime"];
    IDLE -> PROCESSING [label="command(START"];
    PROCESSING -> IDLE [label="command(STOP)\ncommand(RESET)"];
    IDLE -> INIT [label="close()"];

    INIT -> INIT [label="getState\ngetDescriptor"];
    IDLE -> IDLE [label="getXXX\nsetParameter\ncommand(RESET)"];
    PROCESSING -> PROCESSING [label="getXXX\nsetParameter"];
}