linphone-PayloadType.java文件分析

说明

这个类主要是设置一些类型的参数，如MIME， RATE， FMTP等

功能

1. 设置MIME
2. 设置RATE
3. 设置FMT

UML类图

PayloadType.java

package org.linphone.core;

public interface PayloadType {
    /**
     * Obtain the registered mime-type (actually submime) of the PayloadType. For example: "H264", "speex"...
     * @return the (sub) mime type.
     */
    String getMime();

    /**
     * Return the RTP clockrate. It is usually the same as the audio sampling rate, and 90000 for video payload types.
     * @return
     */
    int getRate();

    /**
     * Set format parameter string wished for incoming stream. It is advertised in SDP.
     * @param fmtp the fmtp string, like "octet-align=1;mode-set=4,5,6,7"
     */
    void setRecvFmtp(String fmtp);

    /**
     * Return the format parameters wished for incoming stream.
     * @return the format parameter string.
     */
    String getRecvFmtp();

    /**
     * Set the format parameter effective for the outgoing stream (unusual).
     * @param fmtp
     */
    void setSendFmtp(String fmtp);

    /**
     * Return the format parameter effective for the outgoing stream.
     * @return
     */
    String getSendFmtp();
}

PayloadTypeImpl.java

package org.linphone.core;

class PayloadTypeImpl implements PayloadType {

    public final long nativePtr;

    private native String toString(long ptr);
    private native String getMime(long ptr);
    private native int getRate(long ptr);

    protected PayloadTypeImpl(long aNativePtr)  {
        nativePtr = aNativePtr;
    }

    public int getRate() {
        return getRate(nativePtr);
    }

    public String getMime() {
        return getMime(nativePtr);
    }

    public String toString() {
        return toString(nativePtr);
    }

    private native void setRecvFmtp(long ptr, String fmtp);
    @Override
    public void setRecvFmtp(String fmtp) {
        setRecvFmtp(nativePtr,fmtp);
    }
    private native String getRecvFmtp(long ptr);
    @Override
    public String getRecvFmtp() {
        return getRecvFmtp(nativePtr);
    }

    private native void setSendFmtp(long ptr, String fmtp);
    @Override
    public void setSendFmtp(String fmtp) {
        setSendFmtp(nativePtr,fmtp);
    }
    private native String getSendFmtp(long ptr);
    @Override
    public String getSendFmtp() {
        return getSendFmtp(nativePtr);
    }
}