modify read me

Author: ideastudios

.idea/misc.xml

@@ -1,5 +1,24 @@
 # AndroidPcmResample
-an pcm resample library for Android
+an pcm resample library for Android based on [hutm/JSSRC](https://github.com/hutm/JSSRC)
 
-安卓上pcm数据（wav文件舍弃前44个字节即可）重新采样的库
+安卓上pcm数据重新采样的库
+如果是wav文件舍弃前44个字节之后 就是pcm数据
 
+
+## 使用
+```java
+
+              File file = new File(getExternalFilesDir(null), "50waystosaygoodbye.pcm");
+              //重新采样后生成的文件路径
+              File targetWaveFile = new File(getExternalFilesDir(null), "50waystosaygoodbye_8.pcm");
+              //源文件的采样率、通道数、采样位数
+              PcmResample.AudioFileConfig srcFileConfig = new PcmResample.AudioFileConfig(file.getAbsolutePath(), 44100, AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT);
+              //生成文件的采样率、通道数(必须和源文件一样)、采样位数（必须和源文件一样）
+              PcmResample.AudioFileConfig targetFileConfig = new PcmResample.AudioFileConfig(targetWaveFile.getAbsolutePath(), 8000, AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT);
+              //开始重新采样 采样回调在工作线程 非UI线程
+              PcmResample.resample(srcFileConfig, targetFileConfig, reSampleListener);
+```
+
+
+## 感谢
+[hutm/JSSRC](https://github.com/hutm/JSSRC)

README.md

@@ -1,5 +1,6 @@
 package tech.oom.androidpcmresample;
 
+import android.app.ProgressDialog;
 import android.media.AudioFormat;
 import android.os.Bundle;
 import android.os.Handler;
@@ -18,19 +19,22 @@
 import tech.oom.resample.ReSampleListener;
 
 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
+    private ProgressDialog dialog;
     private Handler mHandler = new Handler() {
-    @Override
-    public void handleMessage(Message msg) {
+        @Override
+        public void handleMessage(Message msg) {
 
-    }
-};
+        }
+    };
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         copyAssetsToFile();
         findViewById(R.id.resample_btn).setOnClickListener(this);
+        dialog = new ProgressDialog(this);
+        dialog.setMessage("resample in progress,please waite for a while");
     }
 
     private void copyAssetsToFile() {
@@ -51,10 +55,15 @@ private void copyAssetsToFile() {
 
 
     private void resample() {
+        //需要重新采样的源文件路径
         File file = new File(getExternalFilesDir(null), "50waystosaygoodbye.pcm");
+        //重新采样后生成的文件路径
         File targetWaveFile = new File(getExternalFilesDir(null), "50waystosaygoodbye_8.pcm");
+        //源文件的采样率、通道数、采样位数
         PcmResample.AudioFileConfig srcFileConfig = new PcmResample.AudioFileConfig(file.getAbsolutePath(), 44100, AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT);
+        //生成文件的采样率、通道数(必须和源文件一样)、采样位数（必须和源文件一样）
         PcmResample.AudioFileConfig targetFileConfig = new PcmResample.AudioFileConfig(targetWaveFile.getAbsolutePath(), 8000, AudioFormat.CHANNEL_IN_STEREO, AudioFormat.ENCODING_PCM_16BIT);
+        //开始重新采样 采样回调在工作线程 非UI线程
         PcmResample.resample(srcFileConfig, targetFileConfig, new ReSampleListener() {
             @Override
             public void onResampleError(String error) {
@@ -64,11 +73,12 @@ public void onResampleError(String error) {
             @Override
             public void onResampleStart() {
                 System.out.println("start");
+
                 mHandler.post(new Runnable() {
                     @Override
                     public void run() {
                         Toast.makeText(MainActivity.this, "Resample start", Toast.LENGTH_SHORT).show();
-
+                        dialog.show();
                     }
                 });
             }
@@ -80,7 +90,7 @@ public void onResampleFinish(final PcmResample.AudioFileConfig targetConfig) {
                     @Override
                     public void run() {
                         Toast.makeText(MainActivity.this, "Finish !The saved file path  " + targetConfig.getFilePath(), Toast.LENGTH_SHORT).show();
-
+                        dialog.dismiss();
                     }
                 });
             }