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app/src/main/java/com/hippo/image/Image.java

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+/*
+ * Copyright 2016 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.image;
+
+import android.graphics.Bitmap;
+
+import java.io.InputStream;
+
+public class Image {
+
+    public static final int FORMAT_JPEG = 0x00;
+    public static final int FORMAT_PNG = 0x01;
+    public static final int FORMAT_GIF = 0x02;
+
+    private long mNativePtr;
+    private int mFormat;
+    private int mWidth;
+    private int mHeight;
+
+    private Image(long nativePtr, int format, int width, int height) {
+        mNativePtr = nativePtr;
+        mFormat = format;
+        mWidth = width;
+        mHeight = height;
+    }
+
+    public int getFormat() {
+        return mFormat;
+    }
+
+    public int getWidth() {
+        return mWidth;
+    }
+
+    public int getHeight() {
+        return mHeight;
+    }
+
+    private void checkRecycled() {
+        if (mNativePtr == 0) {
+            throw new IllegalStateException("The image is recycled.");
+        }
+    }
+
+    public boolean complete() {
+        checkRecycled();
+        return nativeComplete(mNativePtr, mFormat);
+    }
+
+    public boolean isCompleted() {
+        checkRecycled();
+        return nativeIsCompleted(mNativePtr, mFormat);
+    }
+
+    public boolean render(int srcX, int srcY, Bitmap dst, int dstX, int dstY,
+            int width, int height, boolean fillBlank, int defaultColor) {
+        checkRecycled();
+        return nativeRender(mNativePtr, mFormat, srcX, srcY, dst, dstX, dstY,
+                width, height, fillBlank, defaultColor);
+    }
+
+    public void advance() {
+        checkRecycled();
+        nativeAdvance(mNativePtr, mFormat);
+    }
+
+    public int getDelay() {
+        checkRecycled();
+        return nativeGetDelay(mNativePtr, mFormat);
+    }
+
+    public int getFrameCount() {
+        checkRecycled();
+        return nativeFrameCount(mNativePtr, mFormat);
+    }
+
+    public void recycle() {
+        if (mNativePtr != 0) {
+            nativeRecycle(mNativePtr, mFormat);
+            mNativePtr = 0;
+        }
+    }
+
+    public boolean isRecycled() {
+        return mNativePtr == 0;
+    }
+
+    public static Image decode(InputStream is, boolean partially) {
+        return nativeDecode(is, partially);
+    }
+
+    static {
+        System.loadLibrary("stream");
+        System.loadLibrary("jpeg-turbo");
+        System.loadLibrary("gif");
+        System.loadLibrary("image");
+    }
+
+    private static native Image nativeDecode(InputStream is, boolean partially);
+
+    private static native boolean nativeComplete(long nativePtr, int format);
+
+    private static native boolean nativeIsCompleted(long nativePtr, int format);
+
+    private static native boolean nativeRender(long nativePtr, int format,
+            int srcX, int srcY, Bitmap dst, int dstX, int dstY,
+            int width, int height, boolean fillBlank, int defaultColor);
+
+    private static native void nativeAdvance(long nativePtr, int format);
+
+    private static native int nativeGetDelay(long nativePtr, int format);
+
+    private static native int nativeFrameCount(long nativePtr, int format);
+
+    private static native void nativeRecycle(long nativePtr, int format);
+}