| /* |
| * Copyright 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. |
| */ |
| |
| #ifndef ANDROID_JAUDIOFORMAT_H |
| #define ANDROID_JAUDIOFORMAT_H |
| |
| #include <android_media_AudioFormat.h> |
| #include <jni.h> |
| |
| namespace android { |
| |
| class JAudioFormat { |
| public: |
| /* Creates a Java AudioFormat object. */ |
| static jobject createAudioFormatObj(JNIEnv *env, |
| uint32_t sampleRate, |
| audio_format_t format, |
| audio_channel_mask_t channelMask) { |
| |
| jclass jBuilderCls = env->FindClass("android/media/AudioFormat$Builder"); |
| jmethodID jBuilderCtor = env->GetMethodID(jBuilderCls, "<init>", "()V"); |
| jobject jBuilderObj = env->NewObject(jBuilderCls, jBuilderCtor); |
| |
| if (sampleRate == 0) { |
| jclass jAudioFormatCls = env->FindClass("android/media/AudioFormat"); |
| jfieldID jSampleRateUnspecified = |
| env->GetStaticFieldID(jAudioFormatCls, "SAMPLE_RATE_UNSPECIFIED", "I"); |
| sampleRate = env->GetStaticIntField(jAudioFormatCls, jSampleRateUnspecified); |
| } |
| |
| jmethodID jSetEncoding = env->GetMethodID(jBuilderCls, "setEncoding", |
| "(I)Landroid/media/AudioFormat$Builder;"); |
| jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetEncoding, |
| audioFormatFromNative(format)); |
| |
| jmethodID jSetSampleRate = env->GetMethodID(jBuilderCls, "setSampleRate", |
| "(I)Landroid/media/AudioFormat$Builder;"); |
| jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetSampleRate, sampleRate); |
| |
| jmethodID jSetChannelMask = env->GetMethodID(jBuilderCls, "setChannelMask", |
| "(I)Landroid/media/AudioFormat$Builder;"); |
| jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetChannelMask, |
| outChannelMaskFromNative(channelMask)); |
| |
| jmethodID jBuild = env->GetMethodID(jBuilderCls, "build", "()Landroid/media/AudioFormat;"); |
| return env->CallObjectMethod(jBuilderObj, jBuild); |
| } |
| |
| }; |
| |
| } // namespace android |
| |
| #endif // ANDROID_JAUDIOFORMAT_H |