change int to short

app/src/main/cpp/audio_player.cpp

@@ -283,7 +283,7 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr, jstring filter_jstr) {
 //        goto end;
     }
 
-    jmethodID fft_method = env->GetMethodID(player_class, "fftCallbackFromJNI", "([I)V");
+    jmethodID fft_method = env->GetMethodID(player_class, "fftCallbackFromJNI", "([S)V");
 
     filter_sys_t *fft_filter = static_cast<filter_sys_t *>(malloc(sizeof(filter_sys_t)));
     open_visualizer(fft_filter);
@@ -387,7 +387,8 @@ AUDIO_PLAYER_FUNC(void, release) {
 }
 
 void fft_callback(JNIEnv *jniEnv, jobject thiz, jmethodID fft_method, int16_t * arg) {
-    jintArray dataArray = jniEnv->NewIntArray(256);
+    LOGE(TAG, "arg[100]=%d,arg[101]=%d,arg[102]=%d", arg[100], arg[101], arg[102]);
-    jniEnv->SetIntArrayRegion(dataArray, 0, 256, (int*)arg);
+    jshortArray dataArray = jniEnv->NewShortArray(256);
+    jniEnv->SetShortArrayRegion(dataArray, 0, 256, arg);
     jniEnv->CallVoidMethod(thiz, fft_method, dataArray);
 }

app/src/main/cpp/visualizer/execute_fft.c

@@ -304,6 +304,7 @@ void fft_once(void *p_data, block_t *block, int16_t *output)
     }
 
     memcpy(output, p_dest, FFT_BUFFER_SIZE);
+    LOGE("out[100]=%d,out[101]=%d,out[102]=%d", output[100], output[101], output[102]);
 
 release:
     window_close(&wind_ctx);

app/src/main/java/com/frank/ffmpeg/AudioPlayer.java

@@ -63,14 +63,14 @@ public class AudioPlayer {
     private OnFFTCallback onFFTCallback;
 
     public interface OnFFTCallback {
-        void onFFT(int[] data);
+        void onFFT(short[] data);
     }
 
     public void setOnFftCallback(OnFFTCallback onFFTCallback) {
         this.onFFTCallback = onFFTCallback;
     }
 
-    public void fftCallbackFromJNI(int[] data) {
+    public void fftCallbackFromJNI(short[] data) {
         if (data != null && onFFTCallback != null) {
            onFFTCallback.onFFT(data);
         }