如何在不调整原始图像大小的情况下使用 GPUImage 库，我需要为整个 GPUImageView 应用像 Pixelate 或 Blur 这样的过滤器。
我想使用 GPUImage 但我不知道该怎么做。
user2806195
问问题
3063 次
1 回答
7
您更改 GPUImage 库 GPUImageRendering 类下面的代码是
/*
* Copyright (C) 2012 CyberAgent
*
* 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 jp.co.cyberagent.android.gpuimage;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.SurfaceTexture;
import android.hardware.Camera;
import android.hardware.Camera.PreviewCallback;
import android.hardware.Camera.Size;
import android.opengl.GLES20;
import android.opengl.GLSurfaceView.Renderer;
import jp.co.cyberagent.android.gpuimage.util.TextureRotationUtil;
import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.util.LinkedList;
import java.util.Queue;
import static jp.co.cyberagent.android.gpuimage.util.TextureRotationUtil.TEXTURE_NO_ROTATION;
@SuppressLint("WrongCall")
@TargetApi(11)
public class GPUImageRenderer implements Renderer, PreviewCallback {
public static final int NO_IMAGE = -1;
static final float CUBE[] = {
-1.0f, -1.0f,
1.0f, -1.0f,
-1.0f, 1.0f,
1.0f, 1.0f,
};
private GPUImageFilter mFilter;
public final Object mSurfaceChangedWaiter = new Object();
private int mGLTextureId = NO_IMAGE;
private SurfaceTexture mSurfaceTexture = null;
private final FloatBuffer mGLCubeBuffer;
private final FloatBuffer mGLTextureBuffer;
private IntBuffer mGLRgbBuffer;
int mwidth,mheight,wheight;
private int mOutputWidth;
private int mOutputHeight;
private int mImageWidth;
private int mImageHeight;
private int mAddedPadding;
private final Queue<Runnable> mRunOnDraw;
private final Queue<Runnable> mRunOnDrawEnd;
private Rotation mRotation;
private boolean mFlipHorizontal;
private boolean mFlipVertical;
private GPUImage.ScaleType mScaleType = GPUImage.ScaleType.CENTER_CROP;
public GPUImageRenderer(final GPUImageFilter filter) {
mFilter = filter;
mRunOnDraw = new LinkedList<Runnable>();
mRunOnDrawEnd = new LinkedList<Runnable>();
mGLCubeBuffer = ByteBuffer.allocateDirect(CUBE.length * 4)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
mGLCubeBuffer.put(CUBE).position(0);
mGLTextureBuffer = ByteBuffer.allocateDirect(TEXTURE_NO_ROTATION.length * 4)
.order(ByteOrder.nativeOrder())
.asFloatBuffer();
setRotation(Rotation.NORMAL, false, false);
}
@Override
public void onSurfaceCreated(final GL10 unused, final EGLConfig config) {
GLES20.glClearColor(0, 0, 0, 1);
GLES20.glDisable(GLES20.GL_DEPTH_TEST);
mFilter.init();
}
public void onSurfacSize(final int width, final int height) {
mwidth=width;
mheight=height;
}
@Override
public void onSurfaceChanged(final GL10 gl, final int width, final int height) {
if(height>mheight)
{
mOutputWidth = mwidth;
mOutputHeight = mheight;
GLES20.glViewport(0,0, mwidth, mheight);
// GLES20.glViewport(0+(mwidth/2), 0+(mheight/2), mwidth, mheight);
mFilter.onOutputSizeChanged(mwidth,mheight);
}
else
{
mOutputWidth = width;
mOutputHeight = height;
GLES20.glViewport(0,0, width, height);
mFilter.onOutputSizeChanged(width,height);
}
// GLES20.glViewport(20,-20, width, height);
GLES20.glUseProgram(mFilter.getProgram());
adjustImageScaling();
synchronized (mSurfaceChangedWaiter) {
mSurfaceChangedWaiter.notifyAll();
}
}
@Override
public void onDrawFrame(final GL10 gl) {
GLES20.glClear(GLES20.GL_COLOR_BUFFER_BIT | GLES20.GL_DEPTH_BUFFER_BIT);
runAll(mRunOnDraw);
mFilter.onDraw(mGLTextureId, mGLCubeBuffer, mGLTextureBuffer);
runAll(mRunOnDrawEnd);
if (mSurfaceTexture != null) {
mSurfaceTexture.updateTexImage();
}
}
private void runAll(Queue<Runnable> queue) {
synchronized (queue) {
while (!queue.isEmpty()) {
queue.poll().run();
}
}
}
@Override
public void onPreviewFrame(final byte[] data, final Camera camera) {
final Size previewSize = camera.getParameters().getPreviewSize();
if (mGLRgbBuffer == null) {
mGLRgbBuffer = IntBuffer.allocate(previewSize.width * previewSize.height);
}
if (mRunOnDraw.isEmpty()) {
runOnDraw(new Runnable() {
@Override
public void run() {
GPUImageNativeLibrary.YUVtoRBGA(data, previewSize.width, previewSize.height,
mGLRgbBuffer.array());
mGLTextureId = OpenGlUtils.loadTexture(mGLRgbBuffer, previewSize, mGLTextureId);
camera.addCallbackBuffer(data);
if (mImageWidth != previewSize.width) {
mImageWidth = previewSize.width;
mImageHeight = previewSize.height;
adjustImageScaling();
}
}
});
}
}
public void setUpSurfaceTexture(final Camera camera) {
runOnDraw(new Runnable() {
@Override
public void run() {
int[] textures = new int[1];
GLES20.glGenTextures(1, textures, 0);
mSurfaceTexture = new SurfaceTexture(textures[0]);
try {
camera.setPreviewTexture(mSurfaceTexture);
camera.setPreviewCallback(GPUImageRenderer.this);
camera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
public void setFilter(final GPUImageFilter filter) {
runOnDraw(new Runnable() {
@Override
public void run() {
final GPUImageFilter oldFilter = mFilter;
mFilter = filter;
if (oldFilter != null) {
oldFilter.destroy();
}
mFilter.init();
GLES20.glUseProgram(mFilter.getProgram());
mFilter.onOutputSizeChanged(mOutputWidth, mOutputHeight);
}
});
}
public void setFilter3(final GPUImageFilter filter) {
runOnDraw(new Runnable() {
@Override
public void run() {
final GPUImageFilter oldFilter = mFilter;
mFilter = filter;
// if (oldFilter != null) {
// oldFilter.destroy();
// }
mFilter.init();
GLES20.glUseProgram(mFilter.getProgram());
mFilter.onOutputSizeChanged(mOutputWidth, mOutputHeight);
}
});
}
public void deleteImage() {
runOnDraw(new Runnable() {
@Override
public void run() {
GLES20.glDeleteTextures(1, new int[]{
mGLTextureId
}, 0);
mGLTextureId = NO_IMAGE;
}
});
}
public void setImageBitmap(final Bitmap bitmap) {
setImageBitmap(bitmap, true);
}
public void setImageBitmap(final Bitmap bitmap, final boolean recycle) {
if (bitmap == null) {
return;
}
runOnDraw(new Runnable() {
@Override
public void run() {
Bitmap resizedBitmap = null;
if (bitmap.getWidth() % 2 == 1) {
resizedBitmap = Bitmap.createBitmap(bitmap.getWidth() + 1, bitmap.getHeight(),
Bitmap.Config.ARGB_8888);
Canvas can = new Canvas(resizedBitmap);
can.drawARGB(0x00, 0x00, 0x00, 0x00);
can.drawBitmap(bitmap, 0, 0, null);
mAddedPadding = 1;
} else {
mAddedPadding = 0;
}
mGLTextureId = OpenGlUtils.loadTexture(
resizedBitmap != null ? resizedBitmap : bitmap, mGLTextureId, recycle);
if (resizedBitmap != null) {
resizedBitmap.recycle();
}
mImageWidth = bitmap.getWidth();
mImageHeight = bitmap.getHeight();
adjustImageScaling();
}
});
}
public void setScaleType(GPUImage.ScaleType scaleType) {
mScaleType = scaleType;
}
protected int getFrameWidth() {
return mOutputWidth;
}
protected int getFrameHeight() {
return mOutputHeight;
}
private void adjustImageScaling() {
float outputWidth = mOutputWidth;
float outputHeight = mOutputHeight;
if (mRotation == Rotation.ROTATION_270 || mRotation == Rotation.ROTATION_90) {
outputWidth = mOutputHeight;
outputHeight = mOutputWidth;
}
float ratio1 = outputWidth / mImageWidth;
float ratio2 =outputHeight / mImageHeight;
float ratioMax = Math.max(ratio1, ratio2);
int imageWidthNew = (Math.round(mImageWidth * ratioMax));
int imageHeightNew = (Math.round(mImageHeight * ratioMax));
float ratioWidth = imageWidthNew / (outputWidth);
float ratioHeight = imageHeightNew / (outputHeight);
float[] cube = CUBE;
float[] textureCords = TextureRotationUtil.getRotation(mRotation, mFlipHorizontal, mFlipVertical);
if (mScaleType == GPUImage.ScaleType.CENTER_CROP) {
float distHorizontal = (1 - 1 / ratioWidth) / 2;
float distVertical = (1 - 1 / ratioHeight) / 2;
textureCords = new float[]{
addDistance(textureCords[0], distHorizontal), addDistance(textureCords[1], distVertical),
addDistance(textureCords[2], distHorizontal), addDistance(textureCords[3], distVertical),
addDistance(textureCords[4], distHorizontal), addDistance(textureCords[5], distVertical),
addDistance(textureCords[6], distHorizontal), addDistance(textureCords[7], distVertical),
};
} else {
cube = new float[]{
CUBE[0] * ratioWidth, CUBE[1] * ratioHeight,
CUBE[2] * ratioWidth, CUBE[3] * ratioHeight,
CUBE[4] * ratioWidth, CUBE[5] * ratioHeight,
CUBE[6] * ratioWidth, CUBE[7] * ratioHeight,
};
}
mGLCubeBuffer.clear();
mGLCubeBuffer.put(cube).position(0);
mGLTextureBuffer.clear();
mGLTextureBuffer.put(textureCords).position(0);
}
private float addDistance(float coordinate, float distance) {
return coordinate == 0.0f ? distance : 1 - distance;
}
public void setRotationCamera(final Rotation rotation, final boolean flipHorizontal,
final boolean flipVertical) {
setRotation(rotation, flipVertical, flipHorizontal);
}
public void setRotation(final Rotation rotation, final boolean flipHorizontal,
final boolean flipVertical) {
mRotation = rotation;
mFlipHorizontal = flipHorizontal;
mFlipVertical = flipVertical;
adjustImageScaling();
}
public Rotation getRotation() {
return mRotation;
}
public boolean isFlippedHorizontally() {
return mFlipHorizontal;
}
public boolean isFlippedVertically() {
return mFlipVertical;
}
protected void runOnDraw(final Runnable runnable) {
synchronized (mRunOnDraw) {
mRunOnDraw.add(runnable);
}
}
protected void runOnDrawEnd(final Runnable runnable) {
synchronized (mRunOnDrawEnd) {
mRunOnDrawEnd.add(runnable);
}
}
}
于 2013-09-24T06:37:12.530 回答