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audio: Reuse jclass objects

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This commit is contained in:
Hajime Hoshi 2017-04-08 01:35:48 +09:00
parent a6c5b98f0f
commit b5a422700a
1 changed files with 15 additions and 10 deletions
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25
audio/internal/driver/driver_android.go
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@ -19,18 +19,27 @@ package driver
#include <jni.h> #include <jni.h>
#include <stdlib.h> #include <stdlib.h>
static jclass android_media_AudioFormat;
static jclass android_media_AudioManager;
static jclass android_media_AudioTrack;
static char* initAudioTrack(uintptr_t java_vm, uintptr_t jni_env, static char* initAudioTrack(uintptr_t java_vm, uintptr_t jni_env,
int sampleRate, int channelNum, int bytesPerSample, jobject* audioTrack, int* bufferSize) { int sampleRate, int channelNum, int bytesPerSample, jobject* audioTrack, int* bufferSize) {
*bufferSize = 0; *bufferSize = 0;
JavaVM* vm = (JavaVM*)java_vm; JavaVM* vm = (JavaVM*)java_vm;
JNIEnv* env = (JNIEnv*)jni_env; JNIEnv* env = (JNIEnv*)jni_env;
const jclass android_media_AudioFormat = jclass local = (*env)->FindClass(env, "android/media/AudioFormat");
(*env)->FindClass(env, "android/media/AudioFormat"); android_media_AudioFormat = (*env)->NewGlobalRef(env, local);
const jclass android_media_AudioManager = (*env)->DeleteLocalRef(env, local);
(*env)->FindClass(env, "android/media/AudioManager");
const jclass android_media_AudioTrack = local = (*env)->FindClass(env, "android/media/AudioManager");
(*env)->FindClass(env, "android/media/AudioTrack"); android_media_AudioManager = (*env)->NewGlobalRef(env, local);
(*env)->DeleteLocalRef(env, local);
local = (*env)->FindClass(env, "android/media/AudioTrack");
android_media_AudioTrack = (*env)->NewGlobalRef(env, local);
(*env)->DeleteLocalRef(env, local);
const jint android_media_AudioManager_STREAM_MUSIC = const jint android_media_AudioManager_STREAM_MUSIC =
(*env)->GetStaticIntField( (*env)->GetStaticIntField(
@ -110,9 +119,6 @@ static char* writeToAudioTrack(uintptr_t java_vm, uintptr_t jni_env,
JavaVM* vm = (JavaVM*)java_vm; JavaVM* vm = (JavaVM*)java_vm;
JNIEnv* env = (JNIEnv*)jni_env; JNIEnv* env = (JNIEnv*)jni_env;
const jclass android_media_AudioTrack =
(*env)->FindClass(env, "android/media/AudioTrack");
jbyteArray arrInBytes; jbyteArray arrInBytes;
jshortArray arrInShorts; jshortArray arrInShorts;
switch (bytesPerSample) { switch (bytesPerSample) {
@ -145,7 +151,6 @@ static char* writeToAudioTrack(uintptr_t java_vm, uintptr_t jni_env,
(*env)->DeleteLocalRef(env, arrInShorts); (*env)->DeleteLocalRef(env, arrInShorts);
break; break;
} }
(*env)->DeleteLocalRef(env, android_media_AudioTrack);
switch (result) { switch (result) {
case -3: // ERROR_INVALID_OPERATION case -3: // ERROR_INVALID_OPERATION