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Use GetPrimitiveArrayCritical() for audio data to avoid extra copies

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This commit is contained in:
Cameron Gutman 2020-04-09 19:12:09 -07:00
parent f555d3dae0
commit 27520cb77e
1 changed files with 4 additions and 4 deletions
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8
app/src/main/jni/moonlight-core/callbacks.c
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@ -243,7 +243,7 @@ void BridgeArCleanup() {
void BridgeArDecodeAndPlaySample(char* sampleData, int sampleLength) { void BridgeArDecodeAndPlaySample(char* sampleData, int sampleLength) {
JNIEnv* env = GetThreadEnv(); JNIEnv* env = GetThreadEnv();
jshort* decodedData = (*env)->GetShortArrayElements(env, DecodedAudioBuffer, 0); jshort* decodedData = (*env)->GetPrimitiveArrayCritical(env, DecodedAudioBuffer, NULL);
int decodeLen = opus_multistream_decode(Decoder, int decodeLen = opus_multistream_decode(Decoder,
(const unsigned char*)sampleData, (const unsigned char*)sampleData,
@ -252,8 +252,8 @@ void BridgeArDecodeAndPlaySample(char* sampleData, int sampleLength) {
OpusConfig.samplesPerFrame, OpusConfig.samplesPerFrame,
0); 0);
if (decodeLen > 0) { if (decodeLen > 0) {
// We must release the array elements first to ensure the data is copied before the callback // We must release the array elements before making further JNI calls
(*env)->ReleaseShortArrayElements(env, DecodedAudioBuffer, decodedData, 0); (*env)->ReleasePrimitiveArrayCritical(env, DecodedAudioBuffer, decodedData, 0);
(*env)->CallStaticVoidMethod(env, GlobalBridgeClass, BridgeArPlaySampleMethod, DecodedAudioBuffer); (*env)->CallStaticVoidMethod(env, GlobalBridgeClass, BridgeArPlaySampleMethod, DecodedAudioBuffer);
if ((*env)->ExceptionCheck(env)) { if ((*env)->ExceptionCheck(env)) {
@ -263,7 +263,7 @@ void BridgeArDecodeAndPlaySample(char* sampleData, int sampleLength) {
} }
else { else {
// We can abort here to avoid the copy back since no data was modified // We can abort here to avoid the copy back since no data was modified
(*env)->ReleaseShortArrayElements(env, DecodedAudioBuffer, decodedData, JNI_ABORT); (*env)->ReleasePrimitiveArrayCritical(env, DecodedAudioBuffer, decodedData, JNI_ABORT);
} }
} }