Add: save video thumbnail ad photo

app/src/main/java/com/frank/ffmpeg/activity/ProbeFormatActivity.kt

@@ -3,6 +3,7 @@ package com.frank.ffmpeg.activity
 import android.annotation.SuppressLint
 import android.graphics.Bitmap
 import android.os.Bundle
+import android.os.Environment
 import android.os.Handler
 import android.os.Message
 import android.util.Log
@@ -23,6 +24,7 @@ import com.frank.ffmpeg.util.FFmpegUtil
 import com.frank.ffmpeg.util.FileUtil
 
 import com.frank.ffmpeg.metadata.FFmpegMediaRetriever
+import com.frank.ffmpeg.util.BitmapUtil
 import java.lang.StringBuilder
 
 /**
@@ -41,6 +43,8 @@ class ProbeFormatActivity : BaseActivity() {
 
     private val MSG_FRAME = 9099
 
+    private val savePhoto = false
+
     @SuppressLint("HandlerLeak")
     private val mHandler = object : Handler() {
         override fun handleMessage(msg: Message) {
@@ -190,6 +194,10 @@ class ProbeFormatActivity : BaseActivity() {
             if (bitmap != null) {
                 Log.e("FFmpegRetriever", "bitmap width=${bitmap.width}--height=${bitmap.height}")
                 mHandler.obtainMessage(MSG_FRAME, bitmap).sendToTarget()
+                if (savePhoto) {
+                    val thumbPath = Environment.getExternalStorageDirectory().path + "/thumb_" + System.currentTimeMillis() + ".png"
+                    BitmapUtil.savePhoto(bitmap, thumbPath, this)
+                }
             }
 
             retriever.release()

app/src/main/java/com/frank/ffmpeg/metadata/FFmpegMediaRetriever.java

@@ -145,11 +145,9 @@ public class FFmpegMediaRetriever {
             throw new IllegalArgumentException("Unsupported option: " + option);
         }
 
-        BitmapFactory.Options bitmapOptions= new BitmapFactory.Options();
-        bitmapOptions.inScaled = true;
         byte [] picture = native_getFrameAtTime(timeUs, option);
         if (picture != null) {
-            return BitmapFactory.decodeByteArray(picture, 0, picture.length, bitmapOptions);
+            return BitmapFactory.decodeByteArray(picture, 0, picture.length, null);
         }
 
         return null;
@@ -189,11 +187,9 @@ public class FFmpegMediaRetriever {
             throw new IllegalArgumentException("Unsupported option: " + option);
         }
 
-        BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
-        bitmapOptions.inScaled = true;
         byte [] picture = native_getScaleFrameAtTime(timeUs, option, width, height);
         if (picture != null) {
-            return BitmapFactory.decodeByteArray(picture, 0, picture.length, bitmapOptions);
+            return BitmapFactory.decodeByteArray(picture, 0, picture.length, null);
         }
 
         return null;

app/src/main/java/com/frank/ffmpeg/util/BitmapUtil.kt

@@ -1,11 +1,11 @@
 package com.frank.ffmpeg.util
 
+import android.content.Context
 import android.graphics.Bitmap
 import android.graphics.Canvas
 import android.graphics.Paint
 import android.text.TextUtils
-
-import java.io.File
+import java.io.FileNotFoundException
 import java.io.FileOutputStream
 import java.io.IOException
 
@@ -74,15 +74,29 @@ object BitmapUtil {
         return true
     }
 
-    /**
-     * delete file
-     *
-     * @param filePath filePath
-     * @return result of deletion
-     */
-    fun deleteTextFile(filePath: String): Boolean {
-        val file = File(filePath)
-        return file.exists() && file.delete()
+    fun savePhoto(bitmap: Bitmap?, path: String?, context: Context?): Boolean {
+        if (bitmap == null || TextUtils.isEmpty(path) || context == null) {
+            return false
+        }
+        var fileOutputStream: FileOutputStream? = null
+        try {
+            fileOutputStream = FileOutputStream(path)
+            bitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream)
+            fileOutputStream.flush()
+        } catch (e: FileNotFoundException) {
+            return false
+        } catch (e: IOException) {
+            return false
+        } finally {
+            if (fileOutputStream != null) {
+                try {
+                    fileOutputStream.close()
+                } catch (e: IOException) {
+                    e.printStackTrace()
+                }
+            }
+        }
+        return true
     }
 
 }