1 /*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
24 */
25
26 #include "JavaBandsHolder.h"
27 #include "JniUtils.h"
28
29 CJavaBandsHolder::CJavaBandsHolder(JNIEnv* env, int bands, jfloatArray magnitudes, jfloatArray phases)
30 : m_Bands(bands)
31 {
32 env->GetJavaVM(&m_jvm);
33 m_Magnitudes = (jfloatArray)env->NewGlobalRef(magnitudes);
34 m_Phases = (jfloatArray)env->NewGlobalRef(phases);
35 InitRef(this);
36 }
37
38 CJavaBandsHolder::~CJavaBandsHolder()
39 {
40 CJavaEnvironment jenv(m_jvm);
41 JNIEnv *pEnv = jenv.getEnvironment();
42
43 if (pEnv) {
44 if (m_Magnitudes)
45 pEnv->DeleteGlobalRef(m_Magnitudes);
46
47 if (m_Phases)
48 pEnv->DeleteGlobalRef(m_Phases);
49 }
50 }
51
52 void CJavaBandsHolder::UpdateBands(int size, const float* magnitudes, const float* phases)
53 {
54 if (m_Bands != size)
55 return;
56
57 CJavaEnvironment jenv(m_jvm);
58 JNIEnv *pEnv = jenv.getEnvironment();
59 if (pEnv) {
60 pEnv->SetFloatArrayRegion(m_Magnitudes, 0, size, magnitudes);
61 pEnv->SetFloatArrayRegion(m_Phases, 0, size, phases);
62 }
63 }
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1 /*
2 * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
24 */
25
26 #include "JavaBandsHolder.h"
27 #include "JniUtils.h"
28
29 CJavaBandsHolder::CJavaBandsHolder(JNIEnv* env, int bands, jfloatArray magnitudes, jfloatArray phases)
30 : m_Bands(bands)
31 {
32 env->GetJavaVM(&m_jvm);
33 m_Magnitudes = (jfloatArray)env->NewGlobalRef(magnitudes);
34 m_Phases = (jfloatArray)env->NewGlobalRef(phases);
35 InitRef(this);
36 }
37
38 CJavaBandsHolder::~CJavaBandsHolder()
39 {
40 CJavaEnvironment jenv(m_jvm);
41 JNIEnv *pEnv = jenv.getEnvironment();
42
43 if (pEnv) {
44 if (m_Magnitudes) {
45 pEnv->DeleteGlobalRef(m_Magnitudes);
46 m_Magnitudes = NULL;
47 }
48
49 if (m_Phases) {
50 pEnv->DeleteGlobalRef(m_Phases);
51 m_Phases = NULL;
52 }
53 }
54 }
55
56 void CJavaBandsHolder::UpdateBands(int size, const float* magnitudes, const float* phases)
57 {
58 if (m_Bands != size)
59 return;
60
61 CJavaEnvironment jenv(m_jvm);
62 JNIEnv *pEnv = jenv.getEnvironment();
63 if (pEnv) {
64 // use local references due to threading issues
65 jfloatArray localMagnitudes = (jfloatArray)pEnv->NewLocalRef(m_Magnitudes);
66 jfloatArray localPhases = (jfloatArray)pEnv->NewLocalRef(m_Phases);
67
68 if (localMagnitudes && localPhases) {
69 pEnv->SetFloatArrayRegion(localMagnitudes, 0, size, magnitudes);
70 pEnv->SetFloatArrayRegion(localPhases, 0, size, phases);
71 }
72
73 pEnv->DeleteLocalRef(localMagnitudes);
74 pEnv->DeleteLocalRef(localPhases);
75 }
76 }
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