Remove jcodec dependency

Closes #11

Author: ypresto

NOTICE

@@ -9,6 +9,3 @@ Android Compatibility Test Suite
 (https://android.googlesource.com/platform/cts/), which is developed by
 The Android Open Source Project (https://source.android.com/) and
 is available under a "Apache License 2.0".
-
-This product depends on jcodec (http://jcodec.org/), which is developed
-by The JCodec project and available under a "FreeBSD license".

lib/build.gradle

@@ -38,8 +38,3 @@ publish {
     autoPublish = false
     dryRun = false
 }
-
-dependencies {
-    compile 'org.jcodec:jcodec:0.1.9'
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-}

lib/src/main/java/net/ypresto/androidtranscoder/engine/MediaFormatValidator.java

@@ -19,15 +19,13 @@
 
 import net.ypresto.androidtranscoder.format.MediaFormatExtraConstants;
 import net.ypresto.androidtranscoder.utils.AvcCsdUtils;
-
-import org.jcodec.codecs.h264.H264Utils;
-import org.jcodec.codecs.h264.io.model.SeqParameterSet;
+import net.ypresto.androidtranscoder.utils.AvcSpsUtils;
 
 import java.nio.ByteBuffer;
 
 class MediaFormatValidator {
     // Refer: http://en.wikipedia.org/wiki/H.264/MPEG-4_AVC#Profiles
-    private static final int PROFILE_IDC_BASELINE = 66;
+    private static final byte PROFILE_IDC_BASELINE = 66;
 
     public static void validateVideoOutputFormat(MediaFormat format) {
         String mime = format.getString(MediaFormat.KEY_MIME);
@@ -37,9 +35,9 @@ public static void validateVideoOutputFormat(MediaFormat format) {
             throw new InvalidOutputFormatException("Video codecs other than AVC is not supported, actual mime type: " + mime);
         }
         ByteBuffer spsBuffer = AvcCsdUtils.getSpsBuffer(format);
-        SeqParameterSet sps = H264Utils.readSPS(spsBuffer);
-        if (sps.profile_idc != PROFILE_IDC_BASELINE) {
-            throw new InvalidOutputFormatException("Non-baseline AVC video profile is not supported by Android OS, actual profile_idc: " + sps.profile_idc);
+        byte profileIdc = AvcSpsUtils.getProfileIdc(spsBuffer);
+        if (profileIdc != PROFILE_IDC_BASELINE) {
+            throw new InvalidOutputFormatException("Non-baseline AVC video profile is not supported by Android OS, actual profile_idc: " + profileIdc);
         }
     }
 

lib/src/main/java/net/ypresto/androidtranscoder/utils/AvcCsdUtils.java

@@ -30,6 +30,9 @@ public class AvcCsdUtils {
     // Refer: http://www.cardinalpeak.com/blog/the-h-264-sequence-parameter-set/
     private static final byte AVC_SPS_NAL = 103; // 0<<7 + 3<<5 + 7<<0
 
+    /**
+     * @return ByteBuffer contains SPS without NAL header.
+     */
     public static ByteBuffer getSpsBuffer(MediaFormat format) {
         ByteBuffer sourceBuffer = format.getByteBuffer(MediaFormatExtraConstants.KEY_AVC_SPS).asReadOnlyBuffer(); // might be direct buffer
         ByteBuffer prefixedSpsBuffer = ByteBuffer.allocate(sourceBuffer.limit()).order(sourceBuffer.order());

lib/src/main/java/net/ypresto/androidtranscoder/utils/AvcSpsUtils.java

@@ -0,0 +1,11 @@
+package net.ypresto.androidtranscoder.utils;
+
+import java.nio.ByteBuffer;
+
+public class AvcSpsUtils {
+    public static byte getProfileIdc(ByteBuffer spsBuffer) {
+        // Refer: http://www.cardinalpeak.com/blog/the-h-264-sequence-parameter-set/
+        // First byte after NAL.
+        return spsBuffer.get(0);
+    }
+}