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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "AudioVolumeGroups-JNI"
#include <inttypes.h>
#include <jni.h>
#include <nativehelper/JNIHelp.h>
#include "core_jni_helpers.h"
#include <utils/Log.h>
#include <vector>
#include <media/AudioSystem.h>
#include <media/AudioPolicy.h>
#include <nativehelper/ScopedUtfChars.h>
#include "android_media_AudioAttributes.h"
#include "android_media_AudioErrors.h"
// ----------------------------------------------------------------------------
using namespace android;
// ----------------------------------------------------------------------------
static const char* const kClassPathName = "android/media/audiopolicy/AudioVolumeGroup";
static const char* const kAudioVolumeGroupClassPathName =
"android/media/audiopolicy/AudioVolumeGroup";
static jclass gAudioVolumeGroupClass;
static jmethodID gAudioVolumeGroupCstor;
static struct {
jfieldID mName;
jfieldID mId;
} gAudioVolumeGroupFields;
static jclass gArrayListClass;
static jmethodID gArrayListCstor;
static struct {
jmethodID add;
jmethodID toArray;
} gArrayListMethods;
static jint convertAudioVolumeGroupsFromNative(
JNIEnv *env, jobject *jGroup, const AudioVolumeGroup &group)
{
jint jStatus = (jint)AUDIO_JAVA_SUCCESS;
jstring jName = NULL;
jint Id = NULL;
jintArray jLegacyStreamTypes = NULL;
jobjectArray jAudioAttributes = NULL;
jint numAttributes;
jobject jAudioAttribute = NULL;
jName = env->NewStringUTF(group.getName().c_str());
Id = static_cast<jint>(group.getId());
// Legacy stream types array
jLegacyStreamTypes = env->NewIntArray(group.getStreamTypes().size());
if (jLegacyStreamTypes == NULL) {
jStatus = (jint)AUDIO_JAVA_ERROR;
goto exit;
}
for (size_t streamIndex = 0; streamIndex < group.getStreamTypes().size(); streamIndex++) {
jint jStream = group.getStreamTypes()[streamIndex];
env->SetIntArrayRegion(jLegacyStreamTypes, streamIndex, 1, &jStream);
}
// Audio Attributes array
numAttributes = group.getAudioAttributes().size();
jStatus = JNIAudioAttributeHelper::getJavaArray(env, &jAudioAttributes, numAttributes);
if (jStatus != (jint)AUDIO_JAVA_SUCCESS) {
goto exit;
}
for (size_t j = 0; j < static_cast<size_t>(numAttributes); j++) {
auto attributes = group.getAudioAttributes()[j];
jStatus = JNIAudioAttributeHelper::nativeToJava(env, &jAudioAttribute, attributes);
if (jStatus != AUDIO_JAVA_SUCCESS) {
goto exit;
}
env->SetObjectArrayElement(jAudioAttributes, j, jAudioAttribute);
}
*jGroup = env->NewObject(gAudioVolumeGroupClass, gAudioVolumeGroupCstor,
jName, Id, jAudioAttributes, jLegacyStreamTypes);
exit:
if (jName != NULL) {
env->DeleteLocalRef(jName);
}
return jStatus;
}
static jint
android_media_AudioSystem_listAudioVolumeGroups(JNIEnv *env, jobject clazz, jobject jVolumeGroups)
{
if (env == NULL) {
return AUDIO_JAVA_DEAD_OBJECT;
}
if (jVolumeGroups == NULL) {
ALOGE("listAudioVolumeGroups NULL AudioVolumeGroups");
return (jint)AUDIO_JAVA_BAD_VALUE;
}
if (!env->IsInstanceOf(jVolumeGroups, gArrayListClass)) {
ALOGE("listAudioVolumeGroups not an arraylist");
return (jint)AUDIO_JAVA_BAD_VALUE;
}
status_t status;
AudioVolumeGroupVector groups;
jint jStatus;
jobject jGroup = NULL;
status = AudioSystem::listAudioVolumeGroups(groups);
if (status != NO_ERROR) {
ALOGE("AudioSystem::listAudioVolumeGroups error %d", status);
return nativeToJavaStatus(status);
}
for (const auto &group : groups) {
jStatus = convertAudioVolumeGroupsFromNative(env, &jGroup, group);
if (jStatus != AUDIO_JAVA_SUCCESS) {
goto exit;
}
env->CallBooleanMethod(jVolumeGroups, gArrayListMethods.add, jGroup);
}
exit:
if (jGroup != NULL) {
env->DeleteLocalRef(jGroup);
}
return jStatus;
}
/*
* JNI registration.
*/
static const JNINativeMethod gMethods[] = {
{"native_list_audio_volume_groups", "(Ljava/util/ArrayList;)I",
(void *)android_media_AudioSystem_listAudioVolumeGroups},
};
int register_android_media_AudioVolumeGroups(JNIEnv *env)
{
jclass arrayListClass = FindClassOrDie(env, "java/util/ArrayList");
gArrayListClass = MakeGlobalRefOrDie(env, arrayListClass);
gArrayListCstor = GetMethodIDOrDie(env, arrayListClass, "<init>", "()V");
gArrayListMethods.add = GetMethodIDOrDie(env, arrayListClass, "add", "(Ljava/lang/Object;)Z");
gArrayListMethods.toArray = GetMethodIDOrDie(env, arrayListClass,
"toArray", "()[Ljava/lang/Object;");
jclass audioVolumeGroupClass = FindClassOrDie(env, kAudioVolumeGroupClassPathName);
gAudioVolumeGroupClass = MakeGlobalRefOrDie(env, audioVolumeGroupClass);
gAudioVolumeGroupCstor = GetMethodIDOrDie(
env, audioVolumeGroupClass, "<init>",
"(Ljava/lang/String;I[Landroid/media/AudioAttributes;[I)V");
gAudioVolumeGroupFields.mName = GetFieldIDOrDie(
env, audioVolumeGroupClass, "mName", "Ljava/lang/String;");
gAudioVolumeGroupFields.mId = GetFieldIDOrDie(
env, audioVolumeGroupClass, "mId", "I");
env->DeleteLocalRef(audioVolumeGroupClass);
return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods));
}
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