C++ (Cpp) getNeededCount Examples

Example #1

File: common.cpp Project: DolbyLaboratories/mirror-aosp-platform-frameworks-native

static void
get
  (JNIEnv *_env, jobject _this, jint pname, JTYPEARRAY params_ref, jint offset) {
    jint _exception = 0;
    const char * _exceptionType;
    const char * _exceptionMessage;
    CTYPE *params_base = (CTYPE *) 0;
    jint _remaining;
    CTYPE *params = (CTYPE *) 0;
    int _needed = 0;

    if (!params_ref) {
        _exception = 1;
        _exceptionType = "java/lang/IllegalArgumentException";
        _exceptionMessage = "params == null";
        goto exit;
    }
    if (offset < 0) {
        _exception = 1;
        _exceptionType = "java/lang/IllegalArgumentException";
        _exceptionMessage = "offset < 0";
        goto exit;
    }
    _remaining = _env->GetArrayLength(params_ref) - offset;
    _needed = getNeededCount(pname);
    // if we didn't find this pname, we just assume the user passed
    // an array of the right size -- this might happen with extensions
    // or if we forget an enum here.
    if (_remaining < _needed) {
        _exception = 1;
        _exceptionType = "java/lang/IllegalArgumentException";
        _exceptionMessage = "length - offset < needed";
        goto exit;
    }
    params_base = (CTYPE *)
        _env->GetPrimitiveArrayCritical(params_ref, (jboolean *)0);
    params = params_base + offset;

    GET(
        (GLenum)pname,
        (CTYPE *)params
    );

exit:
    if (params_base) {
        _env->ReleasePrimitiveArrayCritical(params_ref, params_base,
            _exception ? JNI_ABORT: 0);
    }
    if (_exception) {
        jniThrowException(_env, _exceptionType, _exceptionMessage);
    }
}

Example #2

File: android_opengl_GLES10Ext.cpp Project: 020gzh/platform_frameworks_base

static void
getarray
  (JNIEnv *_env, jobject _this, jint pname, jobject params_buf) {
    jint _exception = 0;
    const char * _exceptionType;
    const char * _exceptionMessage;
    JTYPEARRAY _array = (JTYPEARRAY) 0;
    jint _bufferOffset = (jint) 0;
    jint _remaining;
    CTYPE *params = (CTYPE *) 0;
    int _needed = 0;

    params = (CTYPE *)getPointer(_env, params_buf, (jarray*)&_array, &_remaining, &_bufferOffset);
    _remaining /= sizeof(CTYPE);    // convert from bytes to item count
    _needed = getNeededCount(pname);
    // if we didn't find this pname, we just assume the user passed
    // an array of the right size -- this might happen with extensions
    // or if we forget an enum here.
    if (_needed>0 && _remaining < _needed) {
        _exception = 1;
        _exceptionType = "java/lang/IllegalArgumentException";
        _exceptionMessage = "remaining() < needed";
        goto exit;
    }
    if (params == NULL) {
        char * _paramsBase = (char *) getArrayPointer<JTYPEARRAY, ARRAYGETTER>(
            _env, _array, (jboolean *) 0);
        params = (CTYPE *) (_paramsBase + _bufferOffset);
    }
    GET(
        (GLenum)pname,
        (CTYPE *)params
    );

exit:
    if (_array) {
        releaseArrayPointer<JTYPEARRAY, NTYPEARRAY, ARRAYRELEASER>(
            _env, _array, (NTYPEARRAY)params, _exception ? JNI_FALSE : JNI_TRUE);
    }
    if (_exception) {
        jniThrowException(_env, _exceptionType, _exceptionMessage);
    }
}