技术：JDK 1.7 + SDK 28 + Android Studio 3.4.2+手机Android 4.4以上
运行环境：Java + Android Camera API
源代码下载： http://www.demodashi.com/demo/15819.html
概述
AliCamera是基于Android4.4源码中Camera2重新开发的一款全新相机应用，支持拍照、录像、二维码扫描、全景四个模式。 同时相机支持美颜和滤镜功能。
详细
一、运行效果
二、实现过程
①、捕获视频
捕获摄像头捕捉的图像数据并保存为视频。
//CaptureAnimation.java
package com.yunos.camera.animation;
import android.graphics.Color;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Transformation;
import android.view.animation.Animation.AnimationListener;
public class CaptureAnimation extends Animation implements AnimationListener {
private View mView;
public CaptureAnimation(View view) {
mView = view;
setDuration(400);
setAnimationListener(this);
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
float alpha;
if (interpolatedTime < 0.125) {
alpha = interpolatedTime / 0.125f;
} else if (interpolatedTime >= 0.125 && interpolatedTime < 0.5) {
alpha = 1.0f;
} else {
alpha = 0.8f * (1 - interpolatedTime) / 0.5f;
}
mView.setBackgroundColor(Color.argb((int) (alpha * 255 * 0.8), 0, 0, 0));
}
@Override
public void onAnimationStart(Animation animation) {
mView.setBackgroundColor(Color.TRANSPARENT);
}
@Override
public void onAnimationRepeat(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
}
}
②、识别二维码
将摄像头捕获图像，由于从本地图片拿到的bitmap是ARGB进行存储的，需要要先转化出YUV数据，然后先采解析图片的YUV数据。
具体来看步骤：
（1）从本地图片中拿到的bitmap，通过算法拿到它的YUV数据
（2）把YUV数据进行解析
//DecodeHandler.java
package com.yunos.camera.qrcode;
import java.util.EnumMap;
import java.util.EnumSet;
import java.util.Map;
import java.util.Set;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.ReaderException;
import com.google.zxing.Result;
import com.google.zxing.common.HybridBinarizer;
import com.way.camera.R;
import com.yunos.camera.ScanModule;
//import com.zijunlin.Zxing.Demo.camera.CameraManager;
//import com.zijunlin.Zxing.Demo.CaptureActivity;
//import com.zijunlin.Zxing.Demo.R;
public class DecodeHandler extends Handler {
private static final String TAG = DecodeHandler.class.getSimpleName();
public static final int RESULT_NONE = -1;
public static final int RESULT_QR = 0;
public static final int RESULT_BAR = 1;
private final ScanModule scanModule;
private final MultiFormatReader multiFormatReader;
static final Set PRODUCT_FORMATS;
static final Set INDUSTRIAL_FORMATS;
private static final Set ONE_D_FORMATS;
static final Set QR_CODE_FORMATS = EnumSet.of(BarcodeFormat.QR_CODE);
static final Set DATA_MATRIX_FORMATS = EnumSet.of(BarcodeFormat.DATA_MATRIX);
static final Set AZTEC_FORMATS = EnumSet.of(BarcodeFormat.AZTEC);
static final Set PDF417_FORMATS = EnumSet.of(BarcodeFormat.PDF_417);
static {
PRODUCT_FORMATS = EnumSet.of(BarcodeFormat.UPC_A,
BarcodeFormat.UPC_E,
BarcodeFormat.EAN_13,
BarcodeFormat.EAN_8,
BarcodeFormat.RSS_14,
BarcodeFormat.RSS_EXPANDED);
INDUSTRIAL_FORMATS = EnumSet.of(BarcodeFormat.CODE_39,
BarcodeFormat.CODE_93,
BarcodeFormat.CODE_128,
BarcodeFormat.ITF,
BarcodeFormat.CODABAR);
ONE_D_FORMATS = EnumSet.copyOf(PRODUCT_FORMATS);
ONE_D_FORMATS.addAll(INDUSTRIAL_FORMATS);
}
private static boolean isRotate = true;
DecodeHandler(ScanModule scanModule) {
Map hints = new EnumMap(DecodeHintType.class);
Set decodeFormats = EnumSet.noneOf(BarcodeFormat.class);
decodeFormats.addAll(ONE_D_FORMATS);
decodeFormats.addAll(QR_CODE_FORMATS);
String characterSet = "utf-8";
hints.put(DecodeHintType.CHARACTER_SET, characterSet);
hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
multiFormatReader = new MultiFormatReader();
multiFormatReader.setHints(hints);
this.scanModule = scanModule;
}
@Override
public void handleMessage(Message message) {
switch (message.what) {
case R.id.decode:
// Log.d(TAG, "Got decode message");
synchronized (this) {
decode((byte[]) message.obj, message.arg1, message.arg2);
}
break;
case R.id.quit:
Looper.myLooper().quit();
break;
}
}
/**
* Decode the data within the viewfinder rectangle, and time how long it
* took. For efficiency, reuse the same reader objects from one decode to
* the next.
*
* @param data The YUV preview frame.
* @param width The width of the preview frame.
* @param height The height of the preview frame.
*/
private void decode(byte[] data, int width, int height) {
long start = System.currentTimeMillis();
//Log.d("dyb_scan", "" + data.length + ", width " + width + " height " + height);
int rectleft = (width-height)/2;
if (isRotate) {
isRotate = false;
} else {
isRotate = true;
}
byte tmp[] = new byte[height*height];
if (isRotate) {
for (int row = 0; row < height; row++) {
for (int col = 0; col < height; col++) {
tmp[col*height+row] = data[row*width+col+rectleft];
}
}
} else {
for (int row = 0; row < height; row++) {
for (int col = 0; col < height; col++) {
tmp[row*height+col] = data[row*width+col+rectleft];
}
}
}
PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(tmp, height, height, 0, 0,
height, height, false);
tmp = null;
Result rawResult = null;
if (source != null) {
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
try {
rawResult = multiFormatReader.decodeWithState(bitmap);
} catch (ReaderException re) {
// continue
} finally {
multiFormatReader.reset();
}
}
long cost = System.currentTimeMillis()-start;
Log.d("dyb_scan", "decode time is " + cost);
//long start = System.currentTimeMillis();
// QRCodeResult rawResult = new QRCodeResult();
//rawResult.resString = decode(data, rawResult.location, width, height);
//long cost = System.currentTimeMillis()-start;
//Log.d("dyb_scan", "decode time is " + cost);
if (rawResult != null) {
//Log.d("dyb_scan", "decode result is " + rawResult.resString);
Message message = Message.obtain(scanModule.getHandler(), R.id.decode_succeeded,
rawResult);
message.sendToTarget();
} else {
Message message = Message.obtain(scanModule.getHandler(), R.id.decode_failed,
rawResult);
message.sendToTarget();
}
}
public static native String decode(byte data[], int points[], int width, int height);
static {
System.loadLibrary("qrcode_jni");
}
}
//PlanarYUVLuminanceSource.java /* * Copyright 2009 ZXing authors * * 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.yunos.camera.qrcode; import com.google.zxing.LuminanceSource; /** * This object extends LuminanceSource around an array of YUV data returned from the camera driver, * with the option to crop to a rectangle within the full data. This can be used to exclude * superfluous pixels around the perimeter and speed up decoding. * * It works for any pixel format where the Y channel is planar and appears first, including * YCbCr_420_SP and YCbCr_422_SP. * * @author [email protected] (Daniel Switkin) */ public final class PlanarYUVLuminanceSource extends LuminanceSource { private static final int THUMBNAIL_SCALE_FACTOR = 2; private final byte[] yuvData; private final int dataWidth; private final int dataHeight; private final int left; private final int top; public PlanarYUVLuminanceSource(byte[] yuvData, int dataWidth, int dataHeight, int left, int top, int width, int height, boolean reverseHorizontal) { super(width, height); if (left + width > dataWidth || top + height > dataHeight) { throw new IllegalArgumentException("Crop rectangle does not fit within image data."); } this.yuvData = yuvData; this.dataWidth = dataWidth; this.dataHeight = dataHeight; this.left = left; this.top = top; if (reverseHorizontal) { reverseHorizontal(width, height); } } @Override public byte[] getRow(int y, byte[] row) { if (y < 0 || y >= getHeight()) { throw new IllegalArgumentException("Requested row is outside the image: " + y); } int width = getWidth(); if (row == null || row.length < width) { row = new byte[width]; } int offset = (y + top) * dataWidth + left; System.arraycopy(yuvData, offset, row, 0, width); return row; } @Override public byte[] getMatrix() { int width = getWidth(); int height = getHeight(); // If the caller asks for the entire underlying image, save the copy and give them the // original data. The docs specifically warn that result.length must be ignored. if (width == dataWidth && height == dataHeight) { return yuvData; } int area = width * height; byte[] matrix = new byte[area]; int inputOffset = top * dataWidth + left; // If the width matches the full width of the underlying data, perform a single copy. if (width == dataWidth) { System.arraycopy(yuvData, inputOffset, matrix, 0, area); return matrix; } // Otherwise copy one cropped row at a time. byte[] yuv = yuvData; for (int y = 0; y < height; y++) { int outputOffset = y * width; System.arraycopy(yuv, inputOffset, matrix, outputOffset, width); inputOffset += dataWidth; } return matrix; } @Override public boolean isCropSupported() { return true; } @Override public LuminanceSource crop(int left, int top, int width, int height) { return new PlanarYUVLuminanceSource(yuvData, dataWidth, dataHeight, this.left + left, this.top + top, width, height, false); } public int[] renderThumbnail() { int width = getWidth() / THUMBNAIL_SCALE_FACTOR; int height = getHeight() / THUMBNAIL_SCALE_FACTOR; int[] pixels = new int[width * height]; byte[] yuv = yuvData; int inputOffset = top * dataWidth + left; for (int y = 0; y < height; y++) { int outputOffset = y * width; for (int x = 0; x < width; x++) { int grey = yuv[inputOffset + x * THUMBNAIL_SCALE_FACTOR] & 0xff; pixels[outputOffset + x] = 0xFF000000 | (grey * 0x00010101); } inputOffset += dataWidth * THUMBNAIL_SCALE_FACTOR; } return pixels; } /** * @return width of image from {@link #renderThumbnail()} */ public int getThumbnailWidth() { return getWidth() / THUMBNAIL_SCALE_FACTOR; } /** * @return height of image from {@link #renderThumbnail()} */ public int getThumbnailHeight() { return getHeight() / THUMBNAIL_SCALE_FACTOR; } private void reverseHorizontal(int width, int height) { byte[] yuvData = this.yuvData; for (int y = 0, rowStart = top * dataWidth + left; y < height; y++, rowStart += dataWidth) { int middle = rowStart + width / 2; for (int x1 = rowStart, x2 = rowStart + width - 1; x1 < middle; x1++, x2--) { byte temp = yuvData[x1]; yuvData[x1] = yuvData[x2]; yuvData[x2] = temp; } } } }
③、滤镜处理
滤镜图像处理是通过摄像头捕获图像转化成Bitmap位图，并进行相关处理实现。
颜色处理滤镜：
//ColorMappingProcessor.java
package com.yunos.camera.filters;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLES20;
import android.util.Log;
import com.yunos.camera.ImageProcessNativeInterface;
import com.yunos.gallery3d.glrenderer.BitmapTexture;
import com.yunos.gallery3d.glrenderer.GLCanvas;
import com.yunos.gallery3d.glrenderer.ShaderParameter;
import com.yunos.gallery3d.glrenderer.UniformShaderParameter;
import java.util.HashMap;
import java.util.List;
/*
* back up texture translate algorithm
*
* for (int i = 0; i < 256; i++) {
* ((unsigned char *)(outImage->imageData))[3*i+2] = ((unsigned char *)(inImage->imageData)+inImage->widthStep*2)[3*i];
* ((unsigned char *)(outImage->imageData))[3*i+1] = ((unsigned char *)(inImage->imageData+inImage->widthStep))[3*i+1];
* ((unsigned char *)(outImage->imageData))[3*i] = ((unsigned char *)(inImage->imageData))[3*i+2];
* }
*
*
* */
public class ColorMappingProcessor extends BaseProcessor{
private BitmapTexture colorTabelTexture = null;
private String bitmapPath;
public ColorMappingProcessor() {
NAME = "ColorMapping";
mMethodString = ""
+ "uniform sampler2D " + COLOR_TABLE + ";\n"
+ "mediump vec3 colorTable(vec4 texel, sampler2D table) {\n"
+ " vec2 lookup; \n"
+ " lookup.y = .5;\n"
+ " lookup.x = texel.r;\n"
+ " texel.r = texture2D(table, lookup).r;\n"
+ " lookup.x = texel.g;\n"
+ " texel.g = texture2D(table, lookup).g;\n"
+ " lookup.x = texel.b;\n"
+ " texel.b = texture2D(table, lookup).b;\n"
+ " return texel.rgb;\n"
+ " }\n";
mProcessString = " texel.rgb = colorTable(texel," + COLOR_TABLE + ");\n";
paramMap = new HashMap();
mTextureCount = 1;
}
@Override
public void loadProcess(String path, String mProcessString) {
bitmapPath = path+"/"+mProcessString;
Bitmap bitmap = BitmapFactory.decodeFile(bitmapPath);
colorTabelTexture = new BitmapTexture(bitmap);
}
@Override
public void appendParams(List paramList) {
// TODO Auto-generated method stub
int length = paramList.size();
paramList.add(new UniformShaderParameter(COLOR_TABLE));
paramMap.put(COLOR_TABLE, length);
}
@Override
public void prepareParams(ShaderParameter[] params, GLCanvas canvas) {
// TODO Auto-generated method stub
bindTexture(canvas, colorTabelTexture);
GLES20.glUniform1i(params[paramMap.get(COLOR_TABLE)].handle, textureIndex);
FiltersUtil.checkError();
}
@Override
public void jpegProcess() {
// TODO Auto-generated method stub
Log.d("dyb_filter", NAME + " jpegProcess");
Bitmap bitmap = BitmapFactory.decodeFile(bitmapPath);
ImageProcessNativeInterface.filterColorMapping(bitmap);
bitmap.recycle();
}
}
材质处理滤镜：
//ShaderProcess.java
package com.yunos.camera.filters;
import android.opengl.GLES20;
import android.util.Log;
public class ShaderProcess {
private static final String ALPHA_UNIFORM = "uAlpha";
private static final String TEXTURE_SAMPLER_UNIFORM = "uTextureSampler";
private static final String POSITION_ATTRIBUTE = "aPosition";
private static final String MATRIX_UNIFORM = "uMatrix";
private static final String TEXTURE_MATRIX_UNIFORM = "uTextureMatrix";
ShaderParameter[] mFilterParameters = {
new AttributeShaderParameter(POSITION_ATTRIBUTE), // INDEX_POSITION
new UniformShaderParameter(MATRIX_UNIFORM), // INDEX_MATRIX
new UniformShaderParameter(TEXTURE_MATRIX_UNIFORM), // INDEX_TEXTURE_MATRIX
new UniformShaderParameter(TEXTURE_SAMPLER_UNIFORM), // INDEX_TEXTURE_SAMPLER
new UniformShaderParameter(ALPHA_UNIFORM), // INDEX_ALPHA
// new UniformShaderParameter("delta"), //INDEX_DELTA
};
private static final String FILTER_FRAGMENT_SHADER = ""
+ "#extension GL_OES_EGL_image_external : require\n"
+ "precision mediump float;\n"
+ "varying vec2 vTextureCoord;\n"
+ "uniform float " + ALPHA_UNIFORM + ";\n"
+ "uniform samplerExternalOES " + TEXTURE_SAMPLER_UNIFORM + ";\n"
// + "uniform uFilterMatrix;\n"
+ "void main() {\n"
+ " vec3 gMonoMult1 = vec3(0.299, 0.587, 0.114);"
+ " gl_FragColor = texture2D(" + TEXTURE_SAMPLER_UNIFORM + ", vTextureCoord);\n"
+ " gl_FragColor *= " + ALPHA_UNIFORM + ";\n"
+ " gl_FragColor.r = dot(gMonoMult1, gl_FragColor.rgb);\n"
// + " gl_FragColor.r = gl_FragColor.r * 0.299 + gl_FragColor.g * 0.587 + gl_FragColor.b * 0.114;\n"
+ " gl_FragColor.g = gl_FragColor.r;\n"
+ " gl_FragColor.b = gl_FragColor.r;\n"
+ "}\n";
private static final String TAG = null;
private abstract static class ShaderParameter {
public int handle;
protected final String mName;
public ShaderParameter(String name) {
mName = name;
}
public abstract void loadHandle(int program);
}
private static class UniformShaderParameter extends ShaderParameter {
public UniformShaderParameter(String name) {
super(name);
}
@Override
public void loadHandle(int program) {
handle = GLES20.glGetUniformLocation(program, mName);
checkError();
}
}
private static class AttributeShaderParameter extends ShaderParameter {
public AttributeShaderParameter(String name) {
super(name);
}
@Override
public void loadHandle(int program) {
handle = GLES20.glGetAttribLocation(program, mName);
checkError();
}
}
public static void checkError() {
int error = GLES20.glGetError();
if (error != 0) {
Throwable t = new Throwable();
Log.e(TAG, "GL error: " + error, t);
}
}
}
覆盖图像滤镜：
//OverlayProcessor.java
package com.yunos.camera.filters;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.opengl.GLES20;
import android.util.Log;
import com.yunos.camera.ImageProcessNativeInterface;
import com.yunos.gallery3d.glrenderer.BitmapTexture;
import com.yunos.gallery3d.glrenderer.GLCanvas;
import com.yunos.gallery3d.glrenderer.ShaderParameter;
import com.yunos.gallery3d.glrenderer.UniformShaderParameter;
import java.util.HashMap;
import java.util.List;
public class OverlayProcessor extends BaseProcessor{
private BitmapTexture blowoutTexture = null;
private BitmapTexture overlayTexture = null;
private String blowoutBitmapPath;
private String overlayBitmapPath;
public OverlayProcessor() {
NAME = "Overlay";
mMethodString = ""
+ "uniform sampler2D " + BLOWOUT_TABLE + ";\n"
+ "uniform sampler2D " + OVERLAY_TABLE + ";\n"
+ "mediump vec3 overlayTable(vec4 texel, vec2 textureCoordinate, sampler2D blowout, sampler2D overlay) {\n"
+ " vec3 bbTexel = texture2D(blowout, textureCoordinate).rgb; \n"
+ " texel.r = texture2D(overlay, vec2(bbTexel.r, texel.r)).r; \n"
+ " texel.g = texture2D(overlay, vec2(bbTexel.g, texel.g)).g; \n"
+ " texel.b = texture2D(overlay, vec2(bbTexel.b, texel.b)).b; \n"
+ " return texel.rgb;\n"
+ " }\n";
mProcessString = " texel.rgb = overlayTable(texel, vTextureCoord, " + BLOWOUT_TABLE + ", " + OVERLAY_TABLE + ");\n";
paramMap = new HashMap();
mTextureCount = 2;
}
@Override
public void loadProcess(String path, String mProcessString) {
// TODO Auto-generated method stub
String sub[] = mProcessString.split(",");
blowoutBitmapPath = path+"/"+sub[0];
overlayBitmapPath = path+"/"+sub[1];
Bitmap bitmapBlow = BitmapFactory.decodeFile(blowoutBitmapPath);
blowoutTexture = new BitmapTexture(bitmapBlow);
Bitmap bitmapOverlay = BitmapFactory.decodeFile(overlayBitmapPath);
overlayTexture = new BitmapTexture(bitmapOverlay);
}
@Override
public void appendParams(List paramList) {
// TODO Auto-generated method stub
int length = paramList.size();
paramList.add(new UniformShaderParameter(BLOWOUT_TABLE));
paramMap.put(BLOWOUT_TABLE, length);
length = paramList.size();
paramList.add(new UniformShaderParameter(OVERLAY_TABLE));
paramMap.put(OVERLAY_TABLE, length);
}
@Override
public void prepareParams(ShaderParameter[] params, GLCanvas canvas) {
// TODO Auto-generated method stub
bindTexture(canvas, blowoutTexture);
GLES20.glUniform1i(params[paramMap.get(BLOWOUT_TABLE)].handle, textureIndex);
FiltersUtil.checkError();
textureIndex++;
bindTexture(canvas, overlayTexture);
GLES20.glUniform1i(params[paramMap.get(OVERLAY_TABLE)].handle, textureIndex);
textureIndex--;
FiltersUtil.checkError();
}
@Override
public void jpegProcess() {
// TODO Auto-generated method stub
Log.d("dyb_filter", NAME + " jpegProcess");
Bitmap blowoutBitmap = BitmapFactory.decodeFile(blowoutBitmapPath);
&nbsnbsp; Bitmap overlayBitmap = BitmapFactory.decodeFile(overlayBitmapPath);
ImageProcessNativeInterface.filterOverlay(blowoutBitmap, overlayBitmap);
blowoutBitmap.recycle();
overlayBitmap.recycle();
}
}
像素矩阵处理滤镜：
//MatrixTuningProcessor.java
package com.yunos.camera.filters;
import android.R.integer;
import android.opengl.GLES20;
import android.util.Log;
import com.yunos.camera.ImageProcessNativeInterface;
import com.yunos.gallery3d.glrenderer.GLCanvas;
import com.yunos.gallery3d.glrenderer.ShaderParameter;
import com.yunos.gallery3d.glrenderer.UniformShaderParameter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MatrixTuningProcessor extends BaseProcessor{
private float mMatrix[];
public MatrixTuningProcessor() {
NAME = MATRIX_TUNING_PROCESSOR;
mMethodString = "uniform mat3 " + TRANSFORM_MATRIX + ";\n"
+ "mediump vec4 linearTransform(vec4 src, mat3 transform) {\n "
+ " src.rgb *= transform;\n"
+ " return src;\n"
+ "}\n";
mProcessString = " texel = linearTransform( texel, " + TRANSFORM_MATRIX + "); \n";
paramMap = new HashMap();
mTextureCount = 0;
}
@Override
public void loadProcess(String path, String mProcessString) {
mMatrix = FiltersUtil.convertTextToFloatArrayt(mProcessString);
}
@Override
public void appendParams(List paramList) {
// TODO Auto-generated method stub
int length = paramList.size();
paramList.add(new UniformShaderParameter(TRANSFORM_MATRIX));
paramMap.put(TRANSFORM_MATRIX, length);
}
@Override
public void prepareParams(ShaderParameter[] params, GLCanvas canvas) {
GLES20.glUniformMatrix3fv(params[paramMap.get(TRANSFORM_MATRIX)].handle, 1, false, mMatrix, 0);
}
@Override
public void jpegProcess() {
// TODO Auto-generated method stub
Log.d("dyb_filter", NAME + " jpegProcess");
ImageProcessNativeInterface.filterMatrixTuning(mMatrix);
}
}
图像梯度滤镜：
//GradientProcessor.java
package com.yunos.camera.filters;
import android.opengl.GLES20;
import android.util.Log;
import com.yunos.camera.ImageProcessNativeInterface;
import com.yunos.gallery3d.glrenderer.GLCanvas;
import com.yunos.gallery3d.glrenderer.ShaderParameter;
import com.yunos.gallery3d.glrenderer.UniformShaderParameter;
import java.util.HashMap;
import java.util.List;
public class GradientProcessor extends BaseProcessor{
private float gradientPixSize[] = new float[2];
public GradientProcessor() {
mMethodString = ""
+ "uniform vec2 " + GRADIENT_PIX_SIZE +";\n"
+ "mediump vec4 calculateGradient(samplerExternalOES sampler2d, vec2 _uv, vec2 pixSize) { \n"
+ " mediump vec4 color = vec4(0.0, 0.0, 0.0, 0.0); \n"
+ " highp vec4 up;\n"
+ " highp vec4 down; \n"
+ " highp vec4 left; \n"
+ " highp vec4 right; \n"
+ " highp vec4 temp; \n"
+ " highp float r, g, b; \n"
+ " mediump float amount = 0.0; \n"
+ " mediump float ind = 0.0; \n"
+ " mediump vec2 offset; \n"
+ " mediump float pixNum = 1.0; \n"
+ " highp float gray1 = 0.0; \n"
+ " highp float gray2 = 0.0; \n"
+ " highp float gray3 = 0.0; \n"
+ " highp float maxG = 0.0; \n"
+ " mediump float x,y; \n"
+ " left = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " right = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " for( ind = 0.0; ind < pixNum; ind++ ) {\n"
+ " x = max(0.0, min(1.0, _uv.s-ind*pixSize.s)); \n"
+ " y = _uv.t; \n"
+ " left += texture2D(sampler2d,vec2(x,y)); \n"
+ " x = max(0.0, min(1.0, _uv.s+(ind+2.0)*pixSize.s)); \n"
+ " y = _uv.t; \n"
+ " right += texture2D(sampler2d,vec2(x,y)); \n"
+ " } \n"
+ " temp = left - right; \n"
+ " if( temp.r < 0.0 ) {\n"
+ " gray1 += temp.r * temp.r; \n"
+ " } \n"
+ " if( temp.g < 0.0 ) {\n"
+ " gray2 +=temp.g * temp.g; \n"
+ " } \n"
+ " if( temp.b < 0.0 ) {\n"
+ " gray3 +=temp.b * temp.b; \n"
+ " } \n"
+ " left = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " right = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " for( ind = 0.0; ind < pixNum; ind++ ) {\n"
+ " x = max(0.0, min(1.0, _uv.s-(ind*2.0)*pixSize.s)); \n"
+ " y = _uv.t; \n"
+ " left += texture2D(sampler2d,vec2(x, y)); \n"
+ " x = max(0.0, min(1.0, _uv.s+ind*pixSize.s)); \n"
+ " y = _uv.t; \n"
+ " right += texture2D(sampler2d,vec2(x, y)); \n"
+ " } \n"
+ " temp = left - right; \n"
+ " if( temp.r > 0.0 ) {\n"
+ " gray1 += temp.r * temp.r ; \n"
+ " } \n"
+ " if( temp.g > 0.0 ) {\n"
+ " gray2 += temp.g * temp.g ; \n"
+ " } \n"
+ " if( temp.b > 0.0 ) {\n"
+ " gray3 += temp.b * temp.b ; \n"
+ " } \n"
+ " up = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " down = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " for( ind = 0.0; ind < pixNum; ind++) {\n"
+ " x = _uv.s; \n"
+ " y = max(0.0, min(1.0, _uv.t-ind*pixSize.t)); \n"
+ " up += texture2D(sampler2d, vec2(x, y)); \n"
+ " y = max(0.0, min(1.0, _uv.t+(ind+2.0)*pixSize.t)); \n"
+ " down += texture2D(sampler2d, vec2(x, y)); \n"
+ " } \n"
+ " temp = up - down; \n"
+ " if( temp.r < 0.0 ) {\n"
+ " gray1 += temp.r * temp.r; \n"
+ " } \n"
+ " if( temp.g < 0.0 ) {\n"
+ " gray2 += temp.g * temp.g; \n"
+ " } \n"
+ " if( temp.b < 0.0 ) {\n"
+ " gray3 += temp.b * temp.b; \n"
+ " } \n"
+ " up = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " down = vec4( 0.0, 0.0, 0.0, 0.0 ); \n"
+ " for( ind = 0.0; ind < pixNum; ind++ ) {\n"
+ " x = _uv.s; \n"
+ " y = max(0.0, min(1.0, _uv.t - (ind+2.0)*pixSize.t)); \n"
+ " up += texture2D(sampler2d, vec2(x, y)); \n"
+ " y = max(0.0, min(1.0, _uv.t + ind*pixSize.t)); \n"
+ " down += texture2D(sampler2d, vec2(x, y)); \n"
+ " } \n"
+ " temp = up - down; \n"
+ " if( temp.r > 0.0 ) {\n"
+ " gray1 += temp.r * temp.r; \n"
+ " } \n"
+ " if( temp.g > 0.0 ) {\n"
+ " gray2 += temp.g *temp.g ; \n"
+ " } \n"
+ " if( temp.b > 0.0 ) {\n"
+ " gray3 += temp.b * temp.b; \n"
+ " } \n"
+ " r = texture2D(sampler2d, _uv).r; \n"
+ " g = texture2D(sampler2d, _uv).g; \n"
+ " b = texture2D(sampler2d, _uv).b; \n"
+ " maxG = pixNum; \n"
+ " if( ( -0.000001 < gray1 / maxG ) && ( gray1 / maxG < 0.000001)) {\n"
+ " gray1 = pow( 0.000001, r); \n"
+ " } else { \n"
+ " gray1 = pow( gray1 / maxG, r ); \n"
+ " } \n"
+ " if( ( -0.000001 < ( gray2 / maxG) ) && ( ( gray2 / maxG) < 0.000001)) {\n"
+ " gray2 = pow( 0.000001, g); \n"
+ " } else { \n"
+ " gray2 = pow( gray2 / maxG, g ); \n"
+ " } \n"
+ " if( ( -0.000001 < gray3 / maxG ) && ( gray3 / maxG < 0.000001)) {\n"
+ " gray3 = pow( 0.000001, b); \n"
+ " } else {\n"
+ " gray3 = pow( gray3 / maxG, b ); \n"
+ " } \n"
+ " gray1 = 1.0 - gray1; \n"
+ " gray2 = 1.0 - gray2; \n"
+ " gray3 = 1.0 - gray3; \n"
+ " color.r = gray1; \n"
+ " color.g = gray2; \n"
+ " color.b = gray3; \n"
+ " return color;\n"
+ " }\n";
mProcessString = " texel = calculateGradient(" + TEXTURE_SAMPLER_UNIFORM + ", vTextureCoord," + GRADIENT_PIX_SIZE + ");\n";
paramMap = new HashMap();
mTextureCount = 0;
}
@Override
public void loadProcess(String path, String mProcessString) {
// TODO Auto-generated method stub
String sub[] = mProcessString.split(",");
gradientPixSize[0] = Float.valueOf(sub[0]);
gradientPixSize[1] = Float.valueOf(sub[1]);
}
@Override
public void appendParams(List paramList) {
// TODO Auto-generated method stub
int length = paramList.size();
paramList.add(new UniformShaderParameter(GRADIENT_PIX_SIZE));
paramMap.put(GRADIENT_PIX_SIZE, length);
}
@Override
public void prepareParams(ShaderParameter[] params, GLCanvas canvas) {
// TODO Auto-generated method stub
GLES20.glUniform2f(params[paramMap.get(GRADIENT_PIX_SIZE)].handle, gradientPixSize[0], gradientPixSize[1]);
FiltersUtil.checkError();
}
@Override
public void jpegProcess() {
// TODO Auto-generated method stub
Log.d("dyb_filter", NAME + " jpegProcess");
ImageProcessNativeInterface.filterGradient(gradientPixSize);
}
}
三、项目结构图
四、补充
App的界面使用原生Holo风格。