From add41b5b786b429ee24f9bb13a712429bc477fa0 Mon Sep 17 00:00:00 2001
From: Shaji Khan <quotablecode@gmail.com>
Date: Sun, 25 Feb 2024 20:20:11 +0530
Subject: [PATCH] Resample works!

---
 .../ladspa/amprack/AudioDecoder.java          | 31 ++++++++++++++++++-
 .../ladspa/amprack/MainActivity.java          | 17 +---------
 2 files changed, 31 insertions(+), 17 deletions(-)

diff --git a/app/src/main/java/com/shajikhan/ladspa/amprack/AudioDecoder.java b/app/src/main/java/com/shajikhan/ladspa/amprack/AudioDecoder.java
index 404e5d54..d57dae03 100644
--- a/app/src/main/java/com/shajikhan/ladspa/amprack/AudioDecoder.java
+++ b/app/src/main/java/com/shajikhan/ladspa/amprack/AudioDecoder.java
@@ -16,11 +16,13 @@
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
 import java.util.Arrays;
 import java.util.HashMap;
 
 public class AudioDecoder {
     MainActivity mainActivity ;
+    long MAX_BUFFER = 512 ;
     String TAG = "Moffin Decoder yeah" ;
     int sampleRate = 48000 ;
     AudioDecoder (MainActivity _MainActivity) {
@@ -114,7 +116,16 @@ float[] decode (FileDescriptor fileDescriptor, String mimeType, int _sampleRate)
         boolean sawOutputEOS = false;
         int noOutputCounter = 0;
         boolean reconfigure = true ;
+        long bufferCount = 0 ;
         while (!sawOutputEOS && noOutputCounter < 50) {
+            bufferCount ++ ;
+//            Log.d(TAG, String.format ("buffer count %d: maxBuffer %d", bufferCount, MAX_BUFFER));
+            if (bufferCount > MAX_BUFFER) {
+                sawInputEOS = true ;
+                sawOutputEOS = true ;
+                break ;
+            }
+
             noOutputCounter++;
             if (!sawInputEOS) {
                 int inputBufIndex = codec.dequeueInputBuffer(kTimeOutUs);
@@ -191,6 +202,24 @@ float[] decode (FileDescriptor fileDescriptor, String mimeType, int _sampleRate)
         codec.release();
         Log.i(TAG, "decode: returning " +
                 String.format("%d audio samples", decoded.length));
-        return decoded;
+
+        if (sampleRate == 48000)
+            return decoded;
+
+        ByteBuffer bb = ByteBuffer.allocateDirect(decoded.length * 4);
+        ByteBuffer bb2 = ByteBuffer.allocateDirect(decoded.length * 10);
+        FloatBuffer floatBuffer = bb.asFloatBuffer(), resampled = bb2.asFloatBuffer();
+        floatBuffer.put(decoded);
+        floatBuffer.position(0);
+
+        Resampler resampler = new Resampler(true,0.1,30);
+        boolean result = resampler.process((double)48000.0/sampleRate,floatBuffer,true,resampled);
+        float [] res = new float[resampled.limit()];
+//                resampled.position(0);
+        for (int i = 0 ; i < resampled.limit(); i ++) {
+            res [i] = resampled.get(i);
+        }
+
+        return res;
     }
 }
diff --git a/app/src/main/java/com/shajikhan/ladspa/amprack/MainActivity.java b/app/src/main/java/com/shajikhan/ladspa/amprack/MainActivity.java
index 0800ce6c..a7716250 100644
--- a/app/src/main/java/com/shajikhan/ladspa/amprack/MainActivity.java
+++ b/app/src/main/java/com/shajikhan/ladspa/amprack/MainActivity.java
@@ -1578,22 +1578,7 @@ public void onActivityResult(int requestCode, int resultCode, Intent data) {
 
             try {
                 float [] samples = audioDecoder.decode(data.getData(), null, -1);
-
-                ByteBuffer bb = ByteBuffer.allocateDirect(samples.length * 4);
-                ByteBuffer bb2 = ByteBuffer.allocateDirect(samples.length * 10);
-                FloatBuffer floatBuffer = bb.asFloatBuffer(), resampled = bb2.asFloatBuffer();
-                floatBuffer.put(samples);
-                floatBuffer.position(0);
-
-                Resampler resampler = new Resampler(true,0.1,30);
-                boolean result = resampler.process((double)48000.0/22050.0,floatBuffer,true,resampled);
-                float [] res = new float[resampled.limit()];
-//                resampled.position(0);
-                for (int i = 0 ; i < resampled.limit(); i ++) {
-                    res [i] = resampled.get(i);
-                }
-
-                AudioEngine.setPluginBuffer(res, plugin);
+                AudioEngine.setPluginBuffer(samples, plugin);
             } catch (IOException e) {
                 toast(e.getMessage());
                 Log.e(TAG, "onActivityResult: ", e);