François Gaffie | adcd00a | 2018-09-18 17:06:26 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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 | //#define LOG_NDEBUG 0 |
| 18 | |
| 19 | #define LOG_TAG "AudioVolumeGroups-JNI" |
| 20 | |
| 21 | #include <inttypes.h> |
| 22 | #include <jni.h> |
| 23 | #include <nativehelper/JNIHelp.h> |
| 24 | #include "core_jni_helpers.h" |
| 25 | |
| 26 | #include <utils/Log.h> |
| 27 | #include <vector> |
| 28 | |
| 29 | #include <media/AudioSystem.h> |
| 30 | #include <media/AudioPolicy.h> |
| 31 | |
| 32 | #include <nativehelper/ScopedUtfChars.h> |
| 33 | |
| 34 | #include "android_media_AudioAttributes.h" |
| 35 | #include "android_media_AudioErrors.h" |
| 36 | |
| 37 | // ---------------------------------------------------------------------------- |
| 38 | |
| 39 | using namespace android; |
| 40 | |
| 41 | // ---------------------------------------------------------------------------- |
| 42 | static const char* const kClassPathName = "android/media/audiopolicy/AudioVolumeGroups"; |
| 43 | static const char* const kAudioVolumeGroupClassPathName = |
| 44 | "android/media/audiopolicy/AudioVolumeGroup"; |
| 45 | |
| 46 | static jclass gAudioVolumeGroupClass; |
| 47 | static jmethodID gAudioVolumeGroupCstor; |
| 48 | static struct { |
| 49 | jfieldID mName; |
| 50 | jfieldID mId; |
| 51 | } gAudioVolumeGroupFields; |
| 52 | |
| 53 | static jclass gArrayListClass; |
| 54 | static jmethodID gArrayListCstor; |
| 55 | static struct { |
| 56 | jmethodID add; |
| 57 | jmethodID toArray; |
| 58 | } gArrayListMethods; |
| 59 | |
| 60 | |
| 61 | static jint convertAudioVolumeGroupsFromNative( |
| 62 | JNIEnv *env, jobject *jGroup, const AudioVolumeGroup &group) |
| 63 | { |
| 64 | jint jStatus = (jint)AUDIO_JAVA_SUCCESS; |
| 65 | jstring jName = NULL; |
| 66 | jint Id = NULL; |
| 67 | |
| 68 | jintArray jLegacyStreamTypes = NULL; |
| 69 | jobjectArray jAudioAttributes = NULL; |
| 70 | jint numAttributes; |
| 71 | jobject jAudioAttribute = NULL; |
| 72 | |
| 73 | jName = env->NewStringUTF(group.getName().c_str()); |
| 74 | Id = static_cast<jint>(group.getId()); |
| 75 | |
| 76 | // Legacy stream types array |
| 77 | jLegacyStreamTypes = env->NewIntArray(group.getStreamTypes().size()); |
| 78 | if (jLegacyStreamTypes == NULL) { |
| 79 | jStatus = (jint)AUDIO_JAVA_ERROR; |
| 80 | goto exit; |
| 81 | } |
| 82 | for (size_t streamIndex = 0; streamIndex < group.getStreamTypes().size(); streamIndex++) { |
| 83 | jint jStream = group.getStreamTypes()[streamIndex]; |
| 84 | env->SetIntArrayRegion(jLegacyStreamTypes, streamIndex, 1, &jStream); |
| 85 | } |
| 86 | |
| 87 | // Audio Attributes array |
| 88 | numAttributes = group.getAudioAttributes().size(); |
| 89 | jStatus = JNIAudioAttributeHelper::getJavaArray(env, &jAudioAttributes, numAttributes); |
| 90 | if (jStatus != (jint)AUDIO_JAVA_SUCCESS) { |
| 91 | goto exit; |
| 92 | } |
| 93 | |
| 94 | for (size_t j = 0; j < static_cast<size_t>(numAttributes); j++) { |
| 95 | auto attributes = group.getAudioAttributes()[j]; |
| 96 | |
| 97 | jStatus = JNIAudioAttributeHelper::nativeToJava(env, &jAudioAttribute, attributes); |
| 98 | if (jStatus != AUDIO_JAVA_SUCCESS) { |
| 99 | goto exit; |
| 100 | } |
| 101 | env->SetObjectArrayElement(jAudioAttributes, j, jAudioAttribute); |
| 102 | } |
| 103 | |
| 104 | *jGroup = env->NewObject(gAudioVolumeGroupClass, gAudioVolumeGroupCstor, |
| 105 | jName, Id, jAudioAttributes, jLegacyStreamTypes); |
| 106 | exit: |
| 107 | if (jName != NULL) { |
| 108 | env->DeleteLocalRef(jName); |
| 109 | } |
| 110 | return jStatus; |
| 111 | } |
| 112 | |
| 113 | static jint |
| 114 | android_media_AudioSystem_listAudioVolumeGroups(JNIEnv *env, jobject clazz, jobject jVolumeGroups) |
| 115 | { |
| 116 | if (env == NULL) { |
| 117 | return AUDIO_JAVA_DEAD_OBJECT; |
| 118 | } |
| 119 | if (jVolumeGroups == NULL) { |
| 120 | ALOGE("listAudioVolumeGroups NULL AudioVolumeGroups"); |
| 121 | return (jint)AUDIO_JAVA_BAD_VALUE; |
| 122 | } |
| 123 | if (!env->IsInstanceOf(jVolumeGroups, gArrayListClass)) { |
| 124 | ALOGE("listAudioVolumeGroups not an arraylist"); |
| 125 | return (jint)AUDIO_JAVA_BAD_VALUE; |
| 126 | } |
| 127 | |
| 128 | status_t status; |
| 129 | AudioVolumeGroupVector groups; |
| 130 | jint jStatus; |
| 131 | jobject jGroup = NULL; |
| 132 | |
| 133 | status = AudioSystem::listAudioVolumeGroups(groups); |
| 134 | if (status != NO_ERROR) { |
| 135 | ALOGE("AudioSystem::listAudioVolumeGroups error %d", status); |
| 136 | return nativeToJavaStatus(status); |
| 137 | } |
| 138 | for (const auto &group : groups) { |
| 139 | jStatus = convertAudioVolumeGroupsFromNative(env, &jGroup, group); |
| 140 | if (jStatus != AUDIO_JAVA_SUCCESS) { |
| 141 | goto exit; |
| 142 | } |
| 143 | env->CallBooleanMethod(jVolumeGroups, gArrayListMethods.add, jGroup); |
| 144 | } |
| 145 | exit: |
| 146 | if (jGroup != NULL) { |
| 147 | env->DeleteLocalRef(jGroup); |
| 148 | } |
| 149 | return jStatus; |
| 150 | } |
| 151 | |
| 152 | /* |
| 153 | * JNI registration. |
| 154 | */ |
| 155 | static const JNINativeMethod gMethods[] = { |
| 156 | {"native_list_audio_volume_groups", "(Ljava/util/ArrayList;)I", |
| 157 | (void *)android_media_AudioSystem_listAudioVolumeGroups}, |
| 158 | }; |
| 159 | |
| 160 | int register_android_media_AudioVolumeGroups(JNIEnv *env) |
| 161 | { |
| 162 | jclass arrayListClass = FindClassOrDie(env, "java/util/ArrayList"); |
| 163 | gArrayListClass = MakeGlobalRefOrDie(env, arrayListClass); |
| 164 | gArrayListCstor = GetMethodIDOrDie(env, arrayListClass, "<init>", "()V"); |
| 165 | gArrayListMethods.add = GetMethodIDOrDie(env, arrayListClass, "add", "(Ljava/lang/Object;)Z"); |
| 166 | gArrayListMethods.toArray = GetMethodIDOrDie(env, arrayListClass, |
| 167 | "toArray", "()[Ljava/lang/Object;"); |
| 168 | |
| 169 | jclass audioVolumeGroupClass = FindClassOrDie(env, kAudioVolumeGroupClassPathName); |
| 170 | gAudioVolumeGroupClass = MakeGlobalRefOrDie(env, audioVolumeGroupClass); |
| 171 | gAudioVolumeGroupCstor = GetMethodIDOrDie( |
| 172 | env, audioVolumeGroupClass, "<init>", |
| 173 | "(Ljava/lang/String;I[Landroid/media/AudioAttributes;[I)V"); |
| 174 | |
| 175 | gAudioVolumeGroupFields.mName = GetFieldIDOrDie( |
| 176 | env, audioVolumeGroupClass, "mName", "Ljava/lang/String;"); |
| 177 | gAudioVolumeGroupFields.mId = GetFieldIDOrDie( |
| 178 | env, audioVolumeGroupClass, "mId", "I"); |
| 179 | |
| 180 | env->DeleteLocalRef(audioVolumeGroupClass); |
| 181 | |
| 182 | return RegisterMethodsOrDie(env, kClassPathName, gMethods, NELEM(gMethods)); |
| 183 | } |