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/*
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
package org.webrtc;
/** Java wrapper for a C++ DtmfSenderInterface. */
public class DtmfSender {
private long nativeDtmfSender;
public DtmfSender(long nativeDtmfSender) {
this.nativeDtmfSender = nativeDtmfSender;
}
/**
* @return true if this DtmfSender is capable of sending DTMF. Otherwise false.
*/
public boolean canInsertDtmf() {
checkDtmfSenderExists();
return nativeCanInsertDtmf(nativeDtmfSender);
}
/**
* Queues a task that sends the provided DTMF tones.
* <p>
* If insertDtmf is called on the same object while an existing task for this
* object to generate DTMF is still running, the previous task is canceled.
*
* @param tones This parameter is treated as a series of characters. The characters 0
* through 9, A through D, #, and * generate the associated DTMF tones. The
* characters a to d are equivalent to A to D. The character ',' indicates a
* delay of 2 seconds before processing the next character in the tones
* parameter. Unrecognized characters are ignored.
* @param duration Indicates the duration in ms to use for each character passed in the tones
* parameter. The duration cannot be more than 6000 or less than 70.
* @param interToneGap Indicates the gap between tones in ms. Must be at least 50 ms but should be
* as short as possible.
* @return true on success and false on failure.
*/
public boolean insertDtmf(String tones, int duration, int interToneGap) {
checkDtmfSenderExists();
return nativeInsertDtmf(nativeDtmfSender, tones, duration, interToneGap);
}
/**
* @return The tones remaining to be played out
*/
public String tones() {
checkDtmfSenderExists();
return nativeTones(nativeDtmfSender);
}
/**
* @return The current tone duration value in ms. This value will be the value last set via the
* insertDtmf() method, or the default value of 100 ms if insertDtmf() was never called.
*/
public int duration() {
checkDtmfSenderExists();
return nativeDuration(nativeDtmfSender);
}
/**
* @return The current value of the between-tone gap in ms. This value will be the value last set
* via the insertDtmf() method, or the default value of 50 ms if insertDtmf() was never
* called.
*/
public int interToneGap() {
checkDtmfSenderExists();
return nativeInterToneGap(nativeDtmfSender);
}
public void dispose() {
checkDtmfSenderExists();
JniCommon.nativeReleaseRef(nativeDtmfSender);
nativeDtmfSender = 0;
}
private void checkDtmfSenderExists() {
if (nativeDtmfSender == 0) {
throw new IllegalStateException("DtmfSender has been disposed.");
}
}
private static native boolean nativeCanInsertDtmf(long dtmfSender);
private static native boolean nativeInsertDtmf(
long dtmfSender, String tones, int duration, int interToneGap);
private static native String nativeTones(long dtmfSender);
private static native int nativeDuration(long dtmfSender);
private static native int nativeInterToneGap(long dtmfSender);
};
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