| /* |
| * Copyright (C) 2010 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. |
| */ |
| |
| package android.media.audiofx; |
| |
| import android.media.audiofx.AudioEffect; |
| import java.util.StringTokenizer; |
| |
| /** |
| * A sound generated within a room travels in many directions. The listener first hears the direct |
| * sound from the source itself. Later, he or she hears discrete echoes caused by sound bouncing off |
| * nearby walls, the ceiling and the floor. As sound waves arrive after undergoing more and more |
| * reflections, individual reflections become indistinguishable and the listener hears continuous |
| * reverberation that decays over time. |
| * Reverb is vital for modeling a listener's environment. It can be used in music applications |
| * to simulate music being played back in various environments, or in games to immerse the |
| * listener within the game's environment. |
| * The EnvironmentalReverb class allows an application to control each reverb engine property in a |
| * global reverb environment and is more suitable for games. For basic control, more suitable for |
| * music applications, it is recommended to use the |
| * {@link android.media.audiofx.PresetReverb} class. |
| * <p>An application creates a EnvironmentalReverb object to instantiate and control a reverb engine |
| * in the audio framework. |
| * <p>The methods, parameter types and units exposed by the EnvironmentalReverb implementation are |
| * directly mapping those defined by the OpenSL ES 1.0.1 Specification |
| * (http://www.khronos.org/opensles/) for the SLEnvironmentalReverbItf interface. |
| * Please refer to this specification for more details. |
| * <p>The EnvironmentalReverb is an output mix auxiliary effect and should be created on |
| * Audio session 0. In order for a MediaPlayer or AudioTrack to be fed into this effect, |
| * they must be explicitely attached to it and a send level must be specified. Use the effect ID |
| * returned by getId() method to designate this particular effect when attaching it to the |
| * MediaPlayer or AudioTrack. |
| * <p>Creating a reverb on the output mix (audio session 0) requires permission |
| * {@link android.Manifest.permission#MODIFY_AUDIO_SETTINGS} |
| * <p>See {@link android.media.audiofx.AudioEffect} class for more details on controlling |
| * audio effects. |
| */ |
| |
| public class EnvironmentalReverb extends AudioEffect { |
| |
| private final static String TAG = "EnvironmentalReverb"; |
| |
| // These constants must be synchronized with those in |
| // frameworks/base/include/media/EffectEnvironmentalReverbApi.h |
| |
| /** |
| * Room level. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_ROOM_LEVEL = 0; |
| /** |
| * Room HF level. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_ROOM_HF_LEVEL = 1; |
| /** |
| * Decay time. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_DECAY_TIME = 2; |
| /** |
| * Decay HF ratio. Parameter ID for |
| * {@link android.media.audiofx.EnvironmentalReverb.OnParameterChangeListener} |
| */ |
| public static final int PARAM_DECAY_HF_RATIO = 3; |
| /** |
| * Early reflections level. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_REFLECTIONS_LEVEL = 4; |
| /** |
| * Early reflections delay. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_REFLECTIONS_DELAY = 5; |
| /** |
| * Reverb level. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_REVERB_LEVEL = 6; |
| /** |
| * Reverb delay. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_REVERB_DELAY = 7; |
| /** |
| * Diffusion. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_DIFFUSION = 8; |
| /** |
| * Density. Parameter ID for OnParameterChangeListener |
| */ |
| public static final int PARAM_DENSITY = 9; |
| |
| // used by setProperties()/getProperties |
| private static final int PARAM_PROPERTIES = 10; |
| |
| /** |
| * Registered listener for parameter changes |
| */ |
| private OnParameterChangeListener mParamListener = null; |
| |
| /** |
| * Listener used internally to to receive raw parameter change event from AudioEffect super |
| * class |
| */ |
| private BaseParameterListener mBaseParamListener = null; |
| |
| /** |
| * Lock for access to mParamListener |
| */ |
| private final Object mParamListenerLock = new Object(); |
| |
| /** |
| * Class constructor. |
| * @param priority the priority level requested by the application for controlling the |
| * EnvironmentalReverb engine. As the same engine can be shared by several applications, this |
| * parameter indicates how much the requesting application needs control of effect parameters. |
| * The normal priority is 0, above normal is a positive number, below normal a negative number. |
| * @param audioSession system wide unique audio session identifier. If audioSession |
| * is not 0, the EnvironmentalReverb will be attached to the MediaPlayer or AudioTrack in the |
| * same audio session. Otherwise, the EnvironmentalReverb will apply to the output mix. |
| * As the EnvironmentalReverb is an auxiliary effect it is recommended to instantiate it on |
| * audio session 0 and to attach it to the MediaPLayer auxiliary output. |
| * |
| * @throws java.lang.IllegalArgumentException |
| * @throws java.lang.UnsupportedOperationException |
| * @throws java.lang.RuntimeException |
| */ |
| public EnvironmentalReverb(int priority, int audioSession) |
| throws IllegalArgumentException, UnsupportedOperationException, RuntimeException { |
| super(EFFECT_TYPE_ENV_REVERB, EFFECT_TYPE_NULL, priority, audioSession); |
| } |
| |
| /** |
| * Sets the master volume level of the environmental reverb effect. |
| * @param room room level in millibels. The valid range is [-9000, 0]. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setRoomLevel(short room) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = shortToByteArray(room); |
| checkStatus(setParameter(PARAM_ROOM_LEVEL, param)); |
| } |
| |
| /** |
| * Gets the master volume level of the environmental reverb effect. |
| * @return the room level in millibels. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public short getRoomLevel() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[2]; |
| checkStatus(getParameter(PARAM_ROOM_LEVEL, param)); |
| return byteArrayToShort(param); |
| } |
| |
| /** |
| * Sets the volume level at 5 kHz relative to the volume level at low frequencies of the |
| * overall reverb effect. |
| * <p>This controls a low-pass filter that will reduce the level of the high-frequency. |
| * @param roomHF high frequency attenuation level in millibels. The valid range is [-9000, 0]. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setRoomHFLevel(short roomHF) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = shortToByteArray(roomHF); |
| checkStatus(setParameter(PARAM_ROOM_HF_LEVEL, param)); |
| } |
| |
| /** |
| * Gets the room HF level. |
| * @return the room HF level in millibels. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public short getRoomHFLevel() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[2]; |
| checkStatus(getParameter(PARAM_ROOM_HF_LEVEL, param)); |
| return byteArrayToShort(param); |
| } |
| |
| /** |
| * Sets the time taken for the level of reverberation to decay by 60 dB. |
| * @param decayTime decay time in milliseconds. The valid range is [100, 20000]. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setDecayTime(int decayTime) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = intToByteArray(decayTime); |
| checkStatus(setParameter(PARAM_DECAY_TIME, param)); |
| } |
| |
| /** |
| * Gets the decay time. |
| * @return the decay time in milliseconds. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public int getDecayTime() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[4]; |
| checkStatus(getParameter(PARAM_DECAY_TIME, param)); |
| return byteArrayToInt(param); |
| } |
| |
| /** |
| * Sets the ratio of high frequency decay time (at 5 kHz) relative to the decay time at low |
| * frequencies. |
| * @param decayHFRatio high frequency decay ratio using a permille scale. The valid range is |
| * [100, 2000]. A ratio of 1000 indicates that all frequencies decay at the same rate. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setDecayHFRatio(short decayHFRatio) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = shortToByteArray(decayHFRatio); |
| checkStatus(setParameter(PARAM_DECAY_HF_RATIO, param)); |
| } |
| |
| /** |
| * Gets the ratio of high frequency decay time (at 5 kHz) relative to low frequencies. |
| * @return the decay HF ration. See {@link #setDecayHFRatio(short)} for units. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public short getDecayHFRatio() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[2]; |
| checkStatus(getParameter(PARAM_DECAY_HF_RATIO, param)); |
| return byteArrayToShort(param); |
| } |
| |
| /** |
| * Sets the volume level of the early reflections. |
| * <p>This level is combined with the overall room level |
| * (set using {@link #setRoomLevel(short)}). |
| * @param reflectionsLevel reflection level in millibels. The valid range is [-9000, 1000]. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setReflectionsLevel(short reflectionsLevel) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = shortToByteArray(reflectionsLevel); |
| checkStatus(setParameter(PARAM_REFLECTIONS_LEVEL, param)); |
| } |
| |
| /** |
| * Gets the volume level of the early reflections. |
| * @return the early reflections level in millibels. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public short getReflectionsLevel() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[2]; |
| checkStatus(getParameter(PARAM_REFLECTIONS_LEVEL, param)); |
| return byteArrayToShort(param); |
| } |
| |
| /** |
| * Sets the delay time for the early reflections. |
| * <p>This method sets the time between when the direct path is heard and when the first |
| * reflection is heard. |
| * @param reflectionsDelay reflections delay in milliseconds. The valid range is [0, 300]. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setReflectionsDelay(int reflectionsDelay) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = intToByteArray(reflectionsDelay); |
| checkStatus(setParameter(PARAM_REFLECTIONS_DELAY, param)); |
| } |
| |
| /** |
| * Gets the reflections delay. |
| * @return the early reflections delay in milliseconds. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public int getReflectionsDelay() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[4]; |
| checkStatus(getParameter(PARAM_REFLECTIONS_DELAY, param)); |
| return byteArrayToInt(param); |
| } |
| |
| /** |
| * Sets the volume level of the late reverberation. |
| * <p>This level is combined with the overall room level (set using {@link #setRoomLevel(short)}). |
| * @param reverbLevel reverb level in millibels. The valid range is [-9000, 2000]. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setReverbLevel(short reverbLevel) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = shortToByteArray(reverbLevel); |
| checkStatus(setParameter(PARAM_REVERB_LEVEL, param)); |
| } |
| |
| /** |
| * Gets the reverb level. |
| * @return the reverb level in millibels. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public short getReverbLevel() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[2]; |
| checkStatus(getParameter(PARAM_REVERB_LEVEL, param)); |
| return byteArrayToShort(param); |
| } |
| |
| /** |
| * Sets the time between the first reflection and the reverberation. |
| * @param reverbDelay reverb delay in milliseconds. The valid range is [0, 100]. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setReverbDelay(int reverbDelay) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = intToByteArray(reverbDelay); |
| checkStatus(setParameter(PARAM_REVERB_DELAY, param)); |
| } |
| |
| /** |
| * Gets the reverb delay. |
| * @return the reverb delay in milliseconds. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public int getReverbDelay() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[4]; |
| checkStatus(getParameter(PARAM_REVERB_DELAY, param)); |
| return byteArrayToInt(param); |
| } |
| |
| /** |
| * Sets the echo density in the late reverberation decay. |
| * <p>The scale should approximately map linearly to the perceived change in reverberation. |
| * @param diffusion diffusion specified using a permille scale. The diffusion valid range is |
| * [0, 1000]. A value of 1000 o/oo indicates a smooth reverberation decay. |
| * Values below this level give a more <i>grainy</i> character. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setDiffusion(short diffusion) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = shortToByteArray(diffusion); |
| checkStatus(setParameter(PARAM_DIFFUSION, param)); |
| } |
| |
| /** |
| * Gets diffusion level. |
| * @return the diffusion level. See {@link #setDiffusion(short)} for units. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public short getDiffusion() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[2]; |
| checkStatus(getParameter(PARAM_DIFFUSION, param)); |
| return byteArrayToShort(param); |
| } |
| |
| |
| /** |
| * Controls the modal density of the late reverberation decay. |
| * <p> The scale should approximately map linearly to the perceived change in reverberation. |
| * A lower density creates a hollow sound that is useful for simulating small reverberation |
| * spaces such as bathrooms. |
| * @param density density specified using a permille scale. The valid range is [0, 1000]. |
| * A value of 1000 o/oo indicates a natural sounding reverberation. Values below this level |
| * produce a more colored effect. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setDensity(short density) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = shortToByteArray(density); |
| checkStatus(setParameter(PARAM_DENSITY, param)); |
| } |
| |
| /** |
| * Gets the density level. |
| * @return the density level. See {@link #setDiffusion(short)} for units. |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public short getDensity() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[2]; |
| checkStatus(getParameter(PARAM_DENSITY, param)); |
| return byteArrayToShort(param); |
| } |
| |
| |
| /** |
| * The OnParameterChangeListener interface defines a method called by the EnvironmentalReverb |
| * when a parameter value has changed. |
| */ |
| public interface OnParameterChangeListener { |
| /** |
| * Method called when a parameter value has changed. The method is called only if the |
| * parameter was changed by another application having the control of the same |
| * EnvironmentalReverb engine. |
| * @param effect the EnvironmentalReverb on which the interface is registered. |
| * @param status status of the set parameter operation. |
| * @param param ID of the modified parameter. See {@link #PARAM_ROOM_LEVEL} ... |
| * @param value the new parameter value. |
| */ |
| void onParameterChange(EnvironmentalReverb effect, int status, int param, int value); |
| } |
| |
| /** |
| * Listener used internally to receive unformatted parameter change events from AudioEffect |
| * super class. |
| */ |
| private class BaseParameterListener implements AudioEffect.OnParameterChangeListener { |
| private BaseParameterListener() { |
| |
| } |
| public void onParameterChange(AudioEffect effect, int status, byte[] param, byte[] value) { |
| OnParameterChangeListener l = null; |
| |
| synchronized (mParamListenerLock) { |
| if (mParamListener != null) { |
| l = mParamListener; |
| } |
| } |
| if (l != null) { |
| int p = -1; |
| int v = -1; |
| |
| if (param.length == 4) { |
| p = byteArrayToInt(param, 0); |
| } |
| if (value.length == 2) { |
| v = (int)byteArrayToShort(value, 0); |
| } else if (value.length == 4) { |
| v = byteArrayToInt(value, 0); |
| } |
| if (p != -1 && v != -1) { |
| l.onParameterChange(EnvironmentalReverb.this, status, p, v); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Registers an OnParameterChangeListener interface. |
| * @param listener OnParameterChangeListener interface registered |
| */ |
| public void setParameterListener(OnParameterChangeListener listener) { |
| synchronized (mParamListenerLock) { |
| if (mParamListener == null) { |
| mParamListener = listener; |
| mBaseParamListener = new BaseParameterListener(); |
| super.setParameterListener(mBaseParamListener); |
| } |
| } |
| } |
| |
| /** |
| * The Settings class regroups all environmental reverb parameters. It is used in |
| * conjuntion with getProperties() and setProperties() methods to backup and restore |
| * all parameters in a single call. |
| */ |
| public static class Settings { |
| public short roomLevel; |
| public short roomHFLevel; |
| public int decayTime; |
| public short decayHFRatio; |
| public short reflectionsLevel; |
| public int reflectionsDelay; |
| public short reverbLevel; |
| public int reverbDelay; |
| public short diffusion; |
| public short density; |
| |
| public Settings() { |
| } |
| |
| /** |
| * Settings class constructor from a key=value; pairs formatted string. The string is |
| * typically returned by Settings.toString() method. |
| * @throws IllegalArgumentException if the string is not correctly formatted. |
| */ |
| public Settings(String settings) { |
| StringTokenizer st = new StringTokenizer(settings, "=;"); |
| int tokens = st.countTokens(); |
| if (st.countTokens() != 21) { |
| throw new IllegalArgumentException("settings: " + settings); |
| } |
| String key = st.nextToken(); |
| if (!key.equals("EnvironmentalReverb")) { |
| throw new IllegalArgumentException( |
| "invalid settings for EnvironmentalReverb: " + key); |
| } |
| |
| try { |
| key = st.nextToken(); |
| if (!key.equals("roomLevel")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| roomLevel = Short.parseShort(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("roomHFLevel")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| roomHFLevel = Short.parseShort(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("decayTime")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| decayTime = Integer.parseInt(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("decayHFRatio")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| decayHFRatio = Short.parseShort(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("reflectionsLevel")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| reflectionsLevel = Short.parseShort(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("reflectionsDelay")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| reflectionsDelay = Integer.parseInt(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("reverbLevel")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| reverbLevel = Short.parseShort(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("reverbDelay")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| reverbDelay = Integer.parseInt(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("diffusion")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| diffusion = Short.parseShort(st.nextToken()); |
| key = st.nextToken(); |
| if (!key.equals("density")) { |
| throw new IllegalArgumentException("invalid key name: " + key); |
| } |
| density = Short.parseShort(st.nextToken()); |
| } catch (NumberFormatException nfe) { |
| throw new IllegalArgumentException("invalid value for key: " + key); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| return new String ( |
| "EnvironmentalReverb"+ |
| ";roomLevel="+Short.toString(roomLevel)+ |
| ";roomHFLevel="+Short.toString(roomHFLevel)+ |
| ";decayTime="+Integer.toString(decayTime)+ |
| ";decayHFRatio="+Short.toString(decayHFRatio)+ |
| ";reflectionsLevel="+Short.toString(reflectionsLevel)+ |
| ";reflectionsDelay="+Integer.toString(reflectionsDelay)+ |
| ";reverbLevel="+Short.toString(reverbLevel)+ |
| ";reverbDelay="+Integer.toString(reverbDelay)+ |
| ";diffusion="+Short.toString(diffusion)+ |
| ";density="+Short.toString(density) |
| ); |
| } |
| }; |
| |
| // Keep this in sync with sizeof(s_reverb_settings) defined in |
| // frameworks/base/include/media/EffectEnvironmentalReverbApi.h |
| static private int PROPERTY_SIZE = 26; |
| |
| /** |
| * Gets the environmental reverb properties. This method is useful when a snapshot of current |
| * reverb settings must be saved by the application. |
| * @return an EnvironmentalReverb.Settings object containing all current parameters values |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public EnvironmentalReverb.Settings getProperties() |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| byte[] param = new byte[PROPERTY_SIZE]; |
| checkStatus(getParameter(PARAM_PROPERTIES, param)); |
| Settings settings = new Settings(); |
| settings.roomLevel = byteArrayToShort(param, 0); |
| settings.roomHFLevel = byteArrayToShort(param, 2); |
| settings.decayTime = byteArrayToInt(param, 4); |
| settings.decayHFRatio = byteArrayToShort(param, 8); |
| settings.reflectionsLevel = byteArrayToShort(param, 10); |
| settings.reflectionsDelay = byteArrayToInt(param, 12); |
| settings.reverbLevel = byteArrayToShort(param, 16); |
| settings.reverbDelay = byteArrayToInt(param, 18); |
| settings.diffusion = byteArrayToShort(param, 22); |
| settings.density = byteArrayToShort(param, 24); |
| return settings; |
| } |
| |
| /** |
| * Sets the environmental reverb properties. This method is useful when reverb settings have to |
| * be applied from a previous backup. |
| * @param settings a EnvironmentalReverb.Settings object containing the properties to apply |
| * @throws IllegalStateException |
| * @throws IllegalArgumentException |
| * @throws UnsupportedOperationException |
| */ |
| public void setProperties(EnvironmentalReverb.Settings settings) |
| throws IllegalStateException, IllegalArgumentException, UnsupportedOperationException { |
| |
| byte[] param = concatArrays(shortToByteArray(settings.roomLevel), |
| shortToByteArray(settings.roomHFLevel), |
| intToByteArray(settings.decayTime), |
| shortToByteArray(settings.decayHFRatio), |
| shortToByteArray(settings.reflectionsLevel), |
| intToByteArray(settings.reflectionsDelay), |
| shortToByteArray(settings.reverbLevel), |
| intToByteArray(settings.reverbDelay), |
| shortToByteArray(settings.diffusion), |
| shortToByteArray(settings.density)); |
| |
| checkStatus(setParameter(PARAM_PROPERTIES, param)); |
| } |
| } |
