MosaicRenderer.java revision eeb94d4de94bfd4e01f3a716803f77a530f5b92c 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.camera.panorama;
18
19/**
20 * The Java interface to JNI calls regarding mosaic preview rendering.
21 *
22 */
23public class MosaicRenderer
24{
25     static
26     {
27         System.loadLibrary("jni_mosaic");
28     }
29
30     /**
31      * Function to be called in onSurfaceCreated() to initialize
32      * the GL context, load and link the shaders and create the
33      * program.
34      */
35     public static native void init();
36
37     /**
38      * Pass the drawing surface's width and height to initialize the
39      * renderer viewports and FBO dimensions.
40      *
41      * @param width width of the drawing surface in pixels.
42      * @param height height of the drawing surface in pixels.
43      */
44     public static native void reset(int width, int height);
45
46     /**
47      * Function to be called in onDrawFrame() to update the screen with
48      * the new frame data.
49      */
50     public static native void step();
51
52     /**
53      * Call this function when a new low-res frame has been processed by
54      * the mosaicing library. This will tell the renderer library to
55      * update its texture and warping transformation. Any calls to step()
56      * after this call will use the new image frame and transformation data.
57      */
58     public static native void ready();
59
60     /**
61      * This function allows toggling between showing the input image data
62      * (without applying any warp) and the warped image data. This is more
63      * for debugging purposes to see if the image data is being updated
64      * correctly or not.
65      */
66     public static native void togglewarping();
67}
68