1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <sstream>
18
19 #include "core_jni_helpers.h"
20 #include <media/AudioSystem.h>
21
22 namespace android {
23
24 namespace {
25
26 #define PACKAGE "com/android/server/soundtrigger_middleware"
27 #define CLASSNAME PACKAGE "/AudioSessionProviderImpl"
28 #define SESSION_CLASSNAME PACKAGE "/SoundTriggerMiddlewareImpl$AudioSessionProvider$AudioSession"
29
acquireAudioSession(JNIEnv * env,jobject clazz)30 jobject acquireAudioSession(
31 JNIEnv* env,
32 jobject clazz) {
33
34 audio_session_t session;
35 audio_io_handle_t ioHandle;
36 audio_devices_t device;
37
38 status_t status = AudioSystem::acquireSoundTriggerSession(&session,
39 &ioHandle,
40 &device);
41 if (status != 0) {
42 std::ostringstream message;
43 message
44 << "AudioSystem::acquireSoundTriggerSession returned an error code: "
45 << status;
46 env->ThrowNew(FindClassOrDie(env, "java/lang/RuntimeException"),
47 message.str().c_str());
48 return nullptr;
49 }
50
51 jclass cls = FindClassOrDie(env, SESSION_CLASSNAME);
52 jmethodID ctor = GetMethodIDOrDie(env, cls, "<init>", "(III)V");
53 return env->NewObject(cls,
54 ctor,
55 static_cast<int>(session),
56 static_cast<int>(ioHandle),
57 static_cast<int>(device));
58 }
59
releaseAudioSession(JNIEnv * env,jobject clazz,jint handle)60 void releaseAudioSession(JNIEnv* env, jobject clazz, jint handle) {
61 status_t status =
62 AudioSystem::releaseSoundTriggerSession(static_cast<audio_session_t>(handle));
63
64 if (status != 0) {
65 std::ostringstream message;
66 message
67 << "AudioSystem::releaseAudioSystemSession returned an error code: "
68 << status;
69 env->ThrowNew(FindClassOrDie(env, "java/lang/RuntimeException"),
70 message.str().c_str());
71 }
72 }
73
74 const JNINativeMethod g_methods[] = {
75 {"acquireSession", "()L" SESSION_CLASSNAME ";",
76 reinterpret_cast<void*>(acquireAudioSession)},
77 {"releaseSession", "(I)V",
78 reinterpret_cast<void*>(releaseAudioSession)},
79 };
80
81 } // namespace
82
register_com_android_server_soundtrigger_middleware_AudioSessionProviderImpl(JNIEnv * env)83 int register_com_android_server_soundtrigger_middleware_AudioSessionProviderImpl(
84 JNIEnv* env) {
85 return RegisterMethodsOrDie(env,
86 CLASSNAME,
87 g_methods,
88 NELEM(g_methods));
89 }
90
91 } // namespace android
92