linphone-PresenceNoteImpl文件对应的JNI层文件分析

说明

这个很短，　自己看。

native函数

private native long newPresenceNoteImpl(String content, String lang);
    private native void unref(long nativePtr);
    private native String getContent(long nativePtr);
    private native int setContent(long nativePtr, String content);
    private native String getLang(long nativePtr);
    private native int setLang(long nativePtr, String lang);

具体的函数分析

newPresenceNoteImpl

/*
 * Class:     org_linphone_core_PresenceNoteImpl
 * Method:    newPresenceNoteImpl
 * Signature: (Ljava/lang/String;Ljava/lang/String;)J
 */
JNIEXPORT jlong JNICALL Java_org_linphone_core_PresenceNoteImpl_newPresenceNoteImpl(JNIEnv *env, jobject jobj, jstring content, jstring lang) {
    LinphonePresenceNote *note;
    const char *ccontent = content ? env->GetStringUTFChars(content, NULL) : NULL;
    const char *clang = lang ? env->GetStringUTFChars(lang, NULL) : NULL;
    note = linphone_presence_note_new(ccontent, clang);
    note = linphone_presence_note_ref(note);
    if (clang) env->ReleaseStringUTFChars(lang, clang);
    if (ccontent) env->ReleaseStringUTFChars(content, ccontent);
    return (jlong)note;
}

linphone_presence_note_new

LinphonePresenceNote * linphone_presence_note_new(const char *content, const char *lang) {
    LinphonePresenceNote *note;

    if (content == NULL) return NULL;
    note = ms_new0(LinphonePresenceNote, 1);
    note->refcnt = 1;
    note->content = ms_strdup(content);
    if (lang != NULL) {
        note->lang = ms_strdup(lang);
    }
    return note;
}

linphone_presence_note_ref

LinphonePresenceNote * linphone_presence_note_ref(LinphonePresenceNote *note) {
    note->refcnt++;
    return note;
}

unref

/*
 * Class:     org_linphone_core_PresenceNoteImpl
 * Method:    unref
 * Signature: (J)V
 */
JNIEXPORT void JNICALL Java_org_linphone_core_PresenceNoteImpl_unref(JNIEnv *env, jobject jobj, jlong ptr) {
    LinphonePresenceNote *note = (LinphonePresenceNote *)ptr;
    linphone_presence_note_unref(note);
}

linphone_presence_note_unref

LinphonePresenceNote * linphone_presence_note_unref(LinphonePresenceNote *note) {
    note->refcnt--;
    if (note->refcnt == 0) {
        presence_note_delete(note);
        return NULL;
    }
    return note;
}

presence_note_delete

static void presence_note_delete(LinphonePresenceNote *note) {
    ms_free(note->content);
    if (note->lang != NULL) {
        ms_free(note->lang);
    }
    ms_free(note);
}

getContent

/*
 * Class:     org_linphone_core_PresenceNoteImpl
 * Method:    getContent
 * Signature: (J)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_org_linphone_core_PresenceNoteImpl_getContent(JNIEnv *env, jobject jobj, jlong ptr) {
    LinphonePresenceNote *note = (LinphonePresenceNote *)ptr;
    const char *ccontent = linphone_presence_note_get_content(note);
    return ccontent ? env->NewStringUTF(ccontent) : NULL;
}

linphone_presence_note_get_content

const char * linphone_presence_note_get_content(const LinphonePresenceNote *note) {
    if (note == NULL)
        return NULL;
    return note->content;
}

setContent

/*
 * Class:     org_linphone_core_PresenceNoteImpl
 * Method:    setContent
 * Signature: (JLjava/lang/String;)I
 */
JNIEXPORT jint JNICALL Java_org_linphone_core_PresenceNoteImpl_setContent(JNIEnv *env, jobject jobj, jlong ptr, jstring content) {
    LinphonePresenceNote *note = (LinphonePresenceNote *)ptr;
    const char *ccontent = content ? env->GetStringUTFChars(content, NULL) : NULL;
    linphone_presence_note_set_content(note, ccontent);
    if (ccontent) env->ReleaseStringUTFChars(content, ccontent);
    return (jint)0;
}

linphone_presence_note_set_content

int linphone_presence_note_set_content(LinphonePresenceNote *note, const char *content) {
    if (content == NULL) return -1;
    if (note->content != NULL) {
        ms_free(note->content);
    }
    note->content = ms_strdup(content);
    return 0;
}

getLang

/*
 * Class:     org_linphone_core_PresenceNoteImpl
 * Method:    getLang
 * Signature: (J)Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_org_linphone_core_PresenceNoteImpl_getLang(JNIEnv *env, jobject jobj, jlong ptr) {
    LinphonePresenceNote *note = (LinphonePresenceNote *)ptr;
    const char *clang = linphone_presence_note_get_lang(note);
    return clang ? env->NewStringUTF(clang) : NULL;
}

linphone_presence_note_get_lang

const char * linphone_presence_note_get_lang(const LinphonePresenceNote *note) {
    if (note == NULL)
        return NULL;
    return note->lang;
}

setLang

/*
 * Class:     org_linphone_core_PresenceNoteImpl
 * Method:    setLang
 * Signature: (JLjava/lang/String;)I
 */
JNIEXPORT jint JNICALL Java_org_linphone_core_PresenceNoteImpl_setLang(JNIEnv *env, jobject jobj, jlong ptr, jstring lang) {
    LinphonePresenceNote *note = (LinphonePresenceNote *)ptr;
    const char *clang = lang ? env->GetStringUTFChars(lang, NULL) : NULL;
    linphone_presence_note_set_lang(note, clang);
    if (clang) env->ReleaseStringUTFChars(lang, clang);
    return (jint)0;
}

linphone_presence_note_set_lang

int linphone_presence_note_set_lang(LinphonePresenceNote *note, const char *lang) {
    if (note->lang != NULL) {
        ms_free(note->lang);
        note->lang = NULL;
    }
    if (lang != NULL) {
        note->lang = ms_strdup(lang);
    }
    return 0;
}