diff --git a/README.md b/README.md
index 1590186c..f00e99a2 100644
--- a/README.md
+++ b/README.md
@@ -117,6 +117,8 @@ Using CameraView is extremely simple:
     app:cameraFrameProcessingMaxWidth="@integer/processing_max_width"
     app:cameraFrameProcessingMaxHeight="@integer/processing_max_height"
     app:cameraFrameProcessingFormat="@integer/processing_format"
+    app:cameraFrameProcessingPoolSize="@integer/processing_pool_size"
+    app:cameraFrameProcessingExecutors="@integer/processing_executors"
     app:cameraVideoBitRate="@integer/video_bit_rate"
     app:cameraAudioBitRate="@integer/audio_bit_rate"
     app:cameraGestureTap="none|autoFocus|takePicture"
@@ -146,6 +148,7 @@ Using CameraView is extremely simple:
     app:cameraPictureMetering="true|false"
     app:cameraPictureSnapshotMetering="false|true"
     app:cameraPictureFormat="jpeg|dng"
+    app:cameraRequestPermissions="true|false"
     app:cameraExperimental="false|true">
     
     <!-- Watermark! -->
diff --git a/cameraview/src/main/java/com/otaliastudios/cameraview/CameraView.java b/cameraview/src/main/java/com/otaliastudios/cameraview/CameraView.java
index bbf9d636..5e842f2d 100644
--- a/cameraview/src/main/java/com/otaliastudios/cameraview/CameraView.java
+++ b/cameraview/src/main/java/com/otaliastudios/cameraview/CameraView.java
@@ -116,12 +116,14 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
     final static boolean DEFAULT_USE_DEVICE_ORIENTATION = true;
     final static boolean DEFAULT_PICTURE_METERING = true;
     final static boolean DEFAULT_PICTURE_SNAPSHOT_METERING = false;
+    final static boolean DEFAULT_REQUEST_PERMISSIONS = true;
     final static int DEFAULT_FRAME_PROCESSING_POOL_SIZE = 2;
     final static int DEFAULT_FRAME_PROCESSING_EXECUTORS = 1;
 
     // Self managed parameters
     private boolean mPlaySounds;
     private boolean mUseDeviceOrientation;
+    private boolean mRequestPermissions;
     private HashMap<Gesture, GestureAction> mGestureMap = new HashMap<>(4);
     private Preview mPreview;
     private Engine mEngine;
@@ -186,6 +188,8 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
         boolean useDeviceOrientation = a.getBoolean(
                 R.styleable.CameraView_cameraUseDeviceOrientation, DEFAULT_USE_DEVICE_ORIENTATION);
         mExperimental = a.getBoolean(R.styleable.CameraView_cameraExperimental, false);
+        mRequestPermissions = a.getBoolean(R.styleable.CameraView_cameraRequestPermissions,
+                DEFAULT_REQUEST_PERMISSIONS);
         mPreview = controls.getPreview();
         mEngine = controls.getEngine();
 
@@ -779,11 +783,14 @@ public class CameraView extends FrameLayout implements LifecycleObserver {
         needsAudio = needsAudio && c.checkSelfPermission(Manifest.permission.RECORD_AUDIO)
                 != PackageManager.PERMISSION_GRANTED;
 
-        if (needsCamera || needsAudio) {
+        if (!needsCamera && !needsAudio) {
+            return true;
+        } else if (mRequestPermissions) {
             requestPermissions(needsCamera, needsAudio);
             return false;
+        } else {
+            return false;
         }
-        return true;
     }
 
     /**
diff --git a/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera1Engine.java b/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera1Engine.java
index 02553017..4ae098df 100644
--- a/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera1Engine.java
+++ b/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera1Engine.java
@@ -175,12 +175,11 @@ public class Camera1Engine extends CameraBaseEngine implements
     @Override
     protected Task<Void> onStartBind() {
         LOG.i("onStartBind:", "Started");
-        Object output = mPreview.getOutput();
         try {
-            if (output instanceof SurfaceHolder) {
-                mCamera.setPreviewDisplay((SurfaceHolder) output);
-            } else if (output instanceof SurfaceTexture) {
-                mCamera.setPreviewTexture((SurfaceTexture) output);
+            if (mPreview.getOutputClass() == SurfaceHolder.class) {
+                mCamera.setPreviewDisplay((SurfaceHolder) mPreview.getOutput());
+            } else if (mPreview.getOutputClass() == SurfaceTexture.class) {
+                mCamera.setPreviewTexture((SurfaceTexture) mPreview.getOutput());
             } else {
                 throw new RuntimeException("Unknown CameraPreview output class.");
             }
diff --git a/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera2Engine.java b/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera2Engine.java
index a315d9e3..26fe1ff8 100644
--- a/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera2Engine.java
+++ b/cameraview/src/main/java/com/otaliastudios/cameraview/engine/Camera2Engine.java
@@ -480,8 +480,9 @@ public class Camera2Engine extends CameraBaseEngine implements
 
         // 1. PREVIEW
         // Create a preview surface with the correct size.
+        final Class outputClass = mPreview.getOutputClass();
         final Object output = mPreview.getOutput();
-        if (output instanceof SurfaceHolder) {
+        if (outputClass == SurfaceHolder.class) {
             try {
                 // This must be called from the UI thread...
                 Tasks.await(Tasks.call(new Callable<Void>() {
@@ -497,7 +498,7 @@ public class Camera2Engine extends CameraBaseEngine implements
                 throw new CameraException(e, CameraException.REASON_FAILED_TO_CONNECT);
             }
             mPreviewStreamSurface = ((SurfaceHolder) output).getSurface();
-        } else if (output instanceof SurfaceTexture) {
+        } else if (outputClass == SurfaceTexture.class) {
             ((SurfaceTexture) output).setDefaultBufferSize(
                     mPreviewStreamSize.getWidth(),
                     mPreviewStreamSize.getHeight());
diff --git a/cameraview/src/main/java/com/otaliastudios/cameraview/preview/GlCameraPreview.java b/cameraview/src/main/java/com/otaliastudios/cameraview/preview/GlCameraPreview.java
index 361113f1..c678d85b 100644
--- a/cameraview/src/main/java/com/otaliastudios/cameraview/preview/GlCameraPreview.java
+++ b/cameraview/src/main/java/com/otaliastudios/cameraview/preview/GlCameraPreview.java
@@ -95,13 +95,13 @@ public class GlCameraPreview extends FilterCameraPreview<GLSurfaceView, SurfaceT
 
             @Override
             public void surfaceDestroyed(SurfaceHolder holder) {
+                dispatchOnSurfaceDestroyed();
                 glView.queueEvent(new Runnable() {
                     @Override
                     public void run() {
                         renderer.onSurfaceDestroyed();
                     }
                 });
-                dispatchOnSurfaceDestroyed();
                 mDispatched = false;
             }
         });
diff --git a/cameraview/src/main/res/values/attrs.xml b/cameraview/src/main/res/values/attrs.xml
index 1b92128d..780566a0 100644
--- a/cameraview/src/main/res/values/attrs.xml
+++ b/cameraview/src/main/res/values/attrs.xml
@@ -156,7 +156,8 @@
             <enum name="dng" value="1" />
         </attr>
 
-        <attr name="cameraExperimental" format="boolean" />
+        <attr name="cameraRequestPermissions" format="boolean|reference"/>
+        <attr name="cameraExperimental" format="boolean|reference" />
 
     </declare-styleable>
 
diff --git a/docs/_config.yml b/docs/_config.yml
index ca979b2f..9f9baf72 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -3,7 +3,7 @@
 # Source site: http://bruth.github.io/jekyll-docs-template/
 # Ref guide: https://visualstudiomagazine.com/Articles/2015/03/01/GitHub-Pages.aspx?Page=2
 
-title: CameraView v2
+title: CameraView
 
 # subtitle is used by ourselves, description is used by seo tag.
 subtitle: A well documented, high-level Android interface that makes capturing pictures and videos easy, addressing all of the common issues and needs.
diff --git a/docs/_layouts/page.html b/docs/_layouts/page.html
index db711745..58cb8016 100644
--- a/docs/_layouts/page.html
+++ b/docs/_layouts/page.html
@@ -4,7 +4,7 @@ layout: default
 
 <div class="page-header">
     <h2>{{ page.title }}
-        {% if page.subtitle %}<small>{{ page.subtitle }}</small>{% endif %}
+        {% if page.subtitle %}<small class="page-subtitle">{{ page.subtitle }}</small>{% endif %}
     </h2>
 </div>
 
diff --git a/docs/_posts/2018-12-20-changelog.md b/docs/_posts/2018-12-20-changelog.md
index 184f7a49..db9a678b 100644
--- a/docs/_posts/2018-12-20-changelog.md
+++ b/docs/_posts/2018-12-20-changelog.md
@@ -13,13 +13,13 @@ Companies can share a tiny part of their revenue and get private support hours i
 
 ## v2.5.0
 
-- [*Camera2*] New: support for RAW pictures with new APIs `setPictureFormat()` and `CameraOptions.getSupportedPictureFormats()`. Contains a **breaking change**: `PictureResult.getFormat()` is not an integer anymore but rather a `PictureFormat`. This API had no real purpose so this might not affect you ([#691][691])
-- [*Camera2*] New: support for constraining the frame processing size through `setFrameProcessingMaxWidth()` and `setFrameProcessingMaxHeight()`. This can improve processing performance ([#691][691])
-- [*Camera2*] New: support for choosing the frame processing format through `setFrameProcessingFormat()` and `CameraOptions.getSupportedFrameProcessingFormats()` ([#691][691])
-- [*Camera2*] Improvement: Frame processing FPS for Camera2 is now smooth and typically better than Camera1. This required some **breaking changes** (see below) ([#691][691])
-- [*Camera1, Camera2*] Improvement: improved internal threading ([#697][697])
-- [*Camera1, Camera2*] Improvement: improvements to stability and edge cases behavior ([#696][696])
-- [*Real time filters*] Change: filters do not need the experimental flag anymore ([#691][691])
+- <small>[Camera2]</small> New: support for RAW pictures with new APIs `setPictureFormat()` and `CameraOptions.getSupportedPictureFormats()`. Contains a **breaking change**: `PictureResult.getFormat()` is not an integer anymore but rather a `PictureFormat`. This API had no real purpose so this might not affect you ([#691][691])
+- <small>[Camera2]</small> New: support for constraining the frame processing size through `setFrameProcessingMaxWidth()` and `setFrameProcessingMaxHeight()`. This can improve processing performance ([#691][691])
+- <small>[Camera2]</small> New: support for choosing the frame processing format through `setFrameProcessingFormat()` and `CameraOptions.getSupportedFrameProcessingFormats()` ([#691][691])
+- <small>[Camera2]</small> Improvement: Frame processing FPS for Camera2 is now smooth and typically better than Camera1. This required some **breaking changes** (see below) ([#691][691])
+- <small>[Camera1, Camera2]</small> Improvement: improved internal threading ([#697][697])
+- <small>[Camera1, Camera2]</small> Improvement: improvements to stability and edge cases behavior ([#696][696])
+- <small>[Real time filters]</small> Change: filters do not need the experimental flag anymore ([#691][691])
 
 The new frame processing approach will force you to update your code, because `Frame.getData()` is 
 not a a byte[] anymore. The class of this object now depends on the engine being used. You can use 
@@ -36,47 +36,47 @@ https://github.com/natario1/CameraView/compare/v2.4.0...v2.5.0
 
 ## v2.4.0
 
-- [*Camera2*] New: support for `previewFrameRate`. Controls preview FPS, snapshot FPS, processor FPS, thanks to [@vaibhavbhandula][vaibhavbhandula] ([#653][653])
-- [*Camera1*] New: support for `previewFrameRate` for Camera1 ([#661][661])
-- [*Camera2*] Fix: fix crashes when taking snapshots very early ([#651][651])
-- [*Preview*] Fix: Fixed preview being upside-down for 180 degrees flips ([#651][651])
+- <small>[Camera2]</small> New: support for `previewFrameRate`. Controls preview FPS, snapshot FPS, processor FPS, thanks to [@vaibhavbhandula][vaibhavbhandula] ([#653][653])
+- <small>[Camera1]</small> New: support for `previewFrameRate` for Camera1 ([#661][661])
+- <small>[Camera2]</small> Fix: fix crashes when taking snapshots very early ([#651][651])
+- <small>[Preview]</small> Fix: Fixed preview being upside-down for 180 degrees flips ([#651][651])
 - Fix: other bug fixes ([#651][651])
 
 https://github.com/natario1/CameraView/compare/v2.3.1...v2.4.0
 
 ### v2.3.1
 
-- [*Video*] Improvement: better timing for `onVideoRecordingStart()` thanks to [@agrawalsuneet][agrawalsuneet] ([#632][632])
-- [*Video, Camera1*] Fix: fixed video errors when starting on specific devices ([#617][617])
-- [*Video*] Fix: fixed crash when closing the app during video snapshots ([#630][630])
-- [*Preview*] Fix: fixed crash when using `GL_SURFACE` ([#630][630])
+- <small>[Video]</small> Improvement: better timing for `onVideoRecordingStart()` thanks to [@agrawalsuneet][agrawalsuneet] ([#632][632])
+- <small>[Video, Camera1]</small> Fix: fixed video errors when starting on specific devices ([#617][617])
+- <small>[Video]</small> Fix: fixed crash when closing the app during video snapshots ([#630][630])
+- <small>[Preview]</small> Fix: fixed crash when using `GL_SURFACE` ([#630][630])
 
 https://github.com/natario1/CameraView/compare/v2.3.0...v2.3.1
 
 ## v2.3.0
 
-- [*Camera2, Metering*] New: `startAutoFocus` is much more powerful and does 3A metering (AF, AE, AWB) ([#574][574])
-- [*Camera2, Metering*] New: `setPictureMetering(boolean)` decides whether to do metering before `takePicture()`. Defaults to true to improve quality. ([#580][580])
-- [*Camera2, Metering*] New: `setPictureSnapshotMetering(boolean)` decides whether to do metering before `takePictureSnapshot()`. Defaults to false to improve latency. However, you can set this to true to greatly improve the snapshot quality, for example to support `Flash`. ([#580][580])
-- [*Camera2, Metering*] New: metering extended to many more cameras, which can now use `startAutoFocus` or the focus gesture ([#574][574])
-- [*Camera2, Metering*] Improvement: `onAutoFocusEnd` is now guaranteed to be called ([#574][574])
-- [*Camera2, Metering*] Improvement: taking picture does not invalidate the previous focus ([#574][574])
-- [*Camera2, Metering*] Improvement: better metering when zoomed in ([#574][574])
-- [*Real time filters*] **Breaking change**: `Filter` interface signatures now accept timestamps for animations ([#588][588])
-- [*Overlays*] New: you can now use `addView()` and `removeView()` to add or remove overlays at runtime (see docs) ([#588][588])
-- [*Video*] Improvement: better encoder selection ([#588][588])
+- <small>[Camera2, Metering]</small> New: `startAutoFocus` is much more powerful and does 3A metering (AF, AE, AWB) ([#574][574])
+- <small>[Camera2, Metering]</small> New: `setPictureMetering(boolean)` decides whether to do metering before `takePicture()`. Defaults to true to improve quality. ([#580][580])
+- <small>[Camera2, Metering]</small> New: `setPictureSnapshotMetering(boolean)` decides whether to do metering before `takePictureSnapshot()`. Defaults to false to improve latency. However, you can set this to true to greatly improve the snapshot quality, for example to support `Flash`. ([#580][580])
+- <small>[Camera2, Metering]</small> New: metering extended to many more cameras, which can now use `startAutoFocus` or the focus gesture ([#574][574])
+- <small>[Camera2, Metering]</small> Improvement: `onAutoFocusEnd` is now guaranteed to be called ([#574][574])
+- <small>[Camera2, Metering]</small> Improvement: taking picture does not invalidate the previous focus ([#574][574])
+- <small>[Camera2, Metering]</small> Improvement: better metering when zoomed in ([#574][574])
+- <small>[Real time filters]</small> **Breaking change**: `Filter` interface signatures now accept timestamps for animations ([#588][588])
+- <small>[Overlays]</small> New: you can now use `addView()` and `removeView()` to add or remove overlays at runtime (see docs) ([#588][588])
+- <small>[Video]</small> Improvement: better encoder selection ([#588][588])
 - Fix: fixed various bugs and improved stability ([#588][588])
 
 https://github.com/natario1/CameraView/compare/v2.2.0...v2.3.0
 
 ## v2.2.0
 
-- [*Real time filters*] New: `SimpleFilter` class accepts a fragment shader in the constructor ([#552][552])
-- [*Real time filters*] New: `MultiFilter` to apply more than one filter at the same time ([#559][559])
-- [*Video*] Improvement: query device encoders before configuring them. Should fix issues on multiple devices ([#545][545])
-- [*Video*] Fix: `takeVideoSnapshot` not working unless you set a max duration ([#551][551])
-- [*Video*] Fix: `takeVideo` crashing on Camera2 LEGACY devices ([#551][551])
-- [*Frame Processing*] Fix: fixed dead Frames issues and improved error messages ([#572][572])
+- <small>[Real time filters]</small> New: `SimpleFilter` class accepts a fragment shader in the constructor ([#552][552])
+- <small>[Real time filters]</small> New: `MultiFilter` to apply more than one filter at the same time ([#559][559])
+- <small>[Video]</small> Improvement: query device encoders before configuring them. Should fix issues on multiple devices ([#545][545])
+- <small>[Video]</small> Fix: `takeVideoSnapshot` not working unless you set a max duration ([#551][551])
+- <small>[Video]</small> Fix: `takeVideo` crashing on Camera2 LEGACY devices ([#551][551])
+- <small>[Frame Processing]</small> Fix: fixed dead Frames issues and improved error messages ([#572][572])
 - Fix: fixed `CameraView` appearance in the layout editor ([#564][564])
 
 https://github.com/natario1/CameraView/compare/v2.1.0...v2.2.0
diff --git a/docs/_posts/2018-12-20-runtime-permissions.md b/docs/_posts/2018-12-20-runtime-permissions.md
index 1a44eb2e..0b7ed22a 100644
--- a/docs/_posts/2018-12-20-runtime-permissions.md
+++ b/docs/_posts/2018-12-20-runtime-permissions.md
@@ -39,11 +39,14 @@ device has cameras, and then start the camera view.
 
 ### Handling
 
-On Marshmallow+, the user must explicitly approve our permissions. You can
+On Marshmallow+, the user must explicitly approve our permissions. You can either:
 
 - handle permissions yourself and then call `open()` or `setLifecycleOwner()` once they are acquired
-- ignore this: `CameraView` will present a permission request to the user based on
+- let `CameraView` request permissions: we will present a permission request to the user based on
   whether they are needed or not with the current configuration.
   
-Note however, that this is done at the activity level, so the permission request callback 
-`onRequestPermissionResults()` will be invoked on the parent activity, not the fragment.
\ No newline at end of file
+The automatic request is currently done at the activity level, so the permission request callback 
+`onRequestPermissionResults()` will be invoked on the parent activity, not the fragment.
+
+The automatic request can be disabled by setting `app:cameraRequestPermissions="false"` in your
+XML declaration.
\ No newline at end of file
diff --git a/docs/css/main.css b/docs/css/main.css
index fbb1438f..761cdd22 100644
--- a/docs/css/main.css
+++ b/docs/css/main.css
@@ -1,21 +1,29 @@
+@import url('https://fonts.googleapis.com/css?family=Calistoga|Roboto+Mono|Source+Sans+Pro:400,700&display=swap');
+
 body {
     font-weight: 400;
+    font-family: 'Source Sans Pro', sans-serif;
+}
+
+h1, h2, h3, h4, h5, h6, th {
+    font-family: 'Calistoga', sans-serif;
+}
+
+small {
+    font-weight: 400;
+    font-family: 'Source Sans Pro', sans-serif;
 }
 
 pre, code, pre code {
     border: none;
     border-radius: 0;
-    background-color: #f9f9f9;
-    font-size: 1em;
+    background-color: #fafafa;
+    font-size: 0.8em;
 }
 
 .highlight {
-    background-color: #f9f9f9;
-}
-
-/* This changes inline code and hopefully nothing else */
-.highlighter-rouge {
-    color: #336699
+    background-color: #fafafa;
+    border-radius: 12px;
 }
 
 pre {
@@ -24,6 +32,12 @@ pre {
 
 code {
     color: inherit;
+    font-family: 'Roboto Mono', monospace;
+    color: #dd2200;
+}
+
+a {
+    color: #0e95e3;
 }
 
 #header {
@@ -35,6 +49,27 @@ code {
     text-decoration: none;
 }
 
+#content {
+    /* bigger font */
+    font-size: 1.1em;
+}
+
+#content p {
+    /* spacing for all paragraphs */
+    margin-top: 16px;
+    margin-bottom: 16px;
+}
+
+#content ul li {
+    /* spacing for lists */
+    margin-top: 8px;
+    margin-bottom: 8px;
+}
+
+#content h5 {
+    font-size: 1.1em;
+}
+
 #footer {
     margin: 20px 0;
     font-size: 0.85em;
@@ -50,14 +85,27 @@ code {
     margin-top: 0;
 }
 
+#content .page-subtitle {
+    font-size: 0.45em;
+}
 
 #navigation {
-    font-size: 0.9em;
+    font-size: 1.0em;
 }
 
 #navigation li a {
-    padding-left: 10px;
-    padding-right: 10px;
+    padding-left: 16px;
+    padding-right: 16px;
+    border-radius: 32px;
+}
+
+#navigation li a:hover {
+    background: #fafafa;
+}
+
+#navigation li.active a {
+    background: #f76c16;
+    color: #FFFFFF;
 }
 
 #navigation .nav-header {
@@ -68,10 +116,11 @@ code {
 }
 
 .nav-header {
-    font-size: 1em;
+    font-size: 1.1em;
     cursor: default;
-    text-transform: uppercase;
+    /* text-transform: uppercase; */
     font-weight: bold;
+    font-family: 'Calistoga', sans-serif;
 }
 
 body.rtl {
@@ -114,4 +163,5 @@ td {
 th {
   padding: 8px 12px;
   border: 1px solid #e5e5e5;
+  font-weight: 400;
 }
diff --git a/docs/css/syntax.css b/docs/css/syntax.css
index 4877e415..d2080cad 100644
--- a/docs/css/syntax.css
+++ b/docs/css/syntax.css
@@ -6,7 +6,7 @@
 .highlight .cm { color: #888888 } /* Comment.Multiline */
 .highlight .cp { color: #cc0000; font-weight: bold } /* Comment.Preproc */
 .highlight .c1 { color: #888888 } /* Comment.Single */
-.highlight .cs { color: #cc0000; font-weight: bold; background-color: #fff0f0 } /* Comment.Special */
+.highlight .cs { color: #cc0000; font-weight: bold; /* background-color: #fff0f0 */ } /* Comment.Special */
 .highlight .gd { color: #000000; background-color: #ffdddd } /* Generic.Deleted */
 .highlight .ge { font-style: italic } /* Generic.Emph */
 .highlight .gr { color: #aa0000 } /* Generic.Error */
diff --git a/docs/index.md b/docs/index.md
index 097a59d0..2e57eb31 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -1,6 +1,6 @@
 ---
 layout: default
-title: "CameraView v2"
+title: "CameraView"
 ---
 
 # CameraView