Added test case to test FFmpeg Assets

Author: hiteshsondhi88

FFmpegAndroid/src/androidTest/java/com/github/hiteshsondhi88/libffmpeg/CheckFFmpegAssets.java

@@ -0,0 +1,27 @@
+package com.github.hiteshsondhi88.libffmpeg;
+
+import android.content.res.AssetManager;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class CheckFFmpegAssets extends CommonInstrumentationTestCase {
+
+    public void testFFmpegAssetsWithSha1Sum() {
+        AssetManager assetMgr = getInstrumentation().getContext().getResources().getAssets();
+        InputStream is = null;
+        try {
+            is = assetMgr.open("armeabi-v7a/ffmpeg");
+            assertEquals(CpuArch.ARMv7.getSha1(), FileUtils.SHA1(is));
+            is = assetMgr.open("armeabi-v7a-neon/ffmpeg");
+            assertEquals(CpuArch.ARMv7_NEON.getSha1(), FileUtils.SHA1(is));
+            is = assetMgr.open("x86/ffmpeg");
+            assertEquals(CpuArch.x86.getSha1(), FileUtils.SHA1(is));
+        } catch (IOException e) {
+            Log.e(e);
+        } finally {
+            Util.close(is);
+        }
+    }
+
+}

FFmpegAndroid/src/androidTest/java/com/github/hiteshsondhi88/libffmpeg/CommonInstrumentationTestCase.java

@@ -0,0 +1,13 @@
+package com.github.hiteshsondhi88.libffmpeg;
+
+import android.test.InstrumentationTestCase;
+
+public class CommonInstrumentationTestCase extends InstrumentationTestCase {
+
+    @Override
+    protected void setUp() throws Exception {
+        super.setUp();
+        Log.setDEBUG(true);
+    }
+
+}

FFmpegAndroid/src/main/java/com/github/hiteshsondhi88/libffmpeg/FileUtils.java

@@ -69,8 +69,19 @@ static String getFFmpeg(Context context, Map<String,String> environmentVars) {
     static String SHA1(String file) {
         InputStream is = null;
         try {
-            MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
             is = new BufferedInputStream(new FileInputStream(file));
+            return SHA1(is);
+        } catch (IOException e) {
+            Log.e(e);
+        } finally {
+            Util.close(is);
+        }
+        return null;
+    }
+
+    static String SHA1(InputStream is) {
+        try {
+            MessageDigest messageDigest = MessageDigest.getInstance("SHA1");
             final byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
             for (int read; (read = is.read(buffer)) != -1; ) {
                 messageDigest.update(buffer, 0, read);