171 lines
8.7 KiB
Java
171 lines
8.7 KiB
Java
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package com.kofax.kmc.ken.engines.gpu.shaders;
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import android.opengl.GLES20;
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import com.kofax.kmc.ken.engines.gpu.OpenGLESContextManager;
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import com.kofax.kmc.ken.engines.gpu.OpenGlUtils;
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import com.kofax.mobile.sdk.ak.f;
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/* loaded from: classes3.dex */
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public class LocalAdaptiveThresholdShader extends TwoPassShader {
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protected static final String FirstPassFragmentShaderString = "precision highp float;varying vec2 textureCoordinate[%d];uniform sampler2D inputImageTexture;uniform float threshold;const float koef2 = 2.0;void main(){float sum = 0.0;%sfloat centralVal = texture2D(inputImageTexture, textureCoordinate[0]).r;sum += centralVal;float avg = sum / count;gl_FragColor = vec4(vec3(avg), centralVal);}";
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protected static final String SecondPassFragmentShaderString = "precision highp float;varying vec2 textureCoordinate[%d];uniform sampler2D inputImageTexture;uniform float threshold;const float koef2 = 2.0;void main(){float sum = 0.0;%svec2 centralRA = texture2D(inputImageTexture, textureCoordinate[0]).ra;sum += centralRA.x;float avg = sum / count;float thresholdResult = step(avg + threshold, centralRA.y);gl_FragColor = vec4(vec3(thresholdResult), 1.0);}";
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protected static final String VertexShaderString = "attribute vec4 position;attribute vec4 inputTextureCoordinate;varying vec2 textureCoordinate[%d];uniform float texelWidth;uniform float texelHeight;void main(){gl_Position = position;textureCoordinate[0] = inputTextureCoordinate.xy;vec2 src_size = vec2(texelWidth, texelHeight);%s}";
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protected String _firstPassFragmentShader;
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protected int _firstPassTexelHeightUniform;
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protected int _firstPassTexelWidthUniform;
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protected int _firstPassThresholdUniform;
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protected int _radius;
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protected String _secondPassFragmentShader;
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protected int _secondPassTexelHeightUniform;
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protected int _secondPassTexelWidthUniform;
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protected int _secondPassThresholdUniform;
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protected String _vertexShader;
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public LocalAdaptiveThresholdShader(OpenGLESContextManager openGLESContextManager) {
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super(openGLESContextManager);
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this._firstPassTexelWidthUniform = 0;
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this._firstPassTexelHeightUniform = 0;
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this._firstPassThresholdUniform = 0;
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this._secondPassTexelWidthUniform = 0;
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this._secondPassTexelHeightUniform = 0;
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this._secondPassThresholdUniform = 0;
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}
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@Override // com.kofax.kmc.ken.engines.gpu.shaders.TwoPassShader
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public int getFirstPassProgram() {
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if (this._firstPassProgram == 0) {
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generateShader();
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this._firstPassProgram = OpenGlUtils.loadProgram(this._vertexShader, this._firstPassFragmentShader, new int[]{0, 1}, new String[]{"position", "inputTextureCoordinate"}, 2);
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this._firstPassTexelWidthUniform = GLES20.glGetUniformLocation(this._firstPassProgram, "texelWidth");
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this._firstPassTexelHeightUniform = GLES20.glGetUniformLocation(this._firstPassProgram, "texelHeight");
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this._firstPassThresholdUniform = GLES20.glGetUniformLocation(this._firstPassProgram, "threshold");
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}
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return this._firstPassProgram;
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}
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@Override // com.kofax.kmc.ken.engines.gpu.shaders.TwoPassShader
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public int getSecondPassProgram() {
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if (this._secondPassProgram == 0) {
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generateShader();
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this._secondPassProgram = OpenGlUtils.loadProgram(this._vertexShader, this._secondPassFragmentShader, new int[]{0, 1}, new String[]{"position", "inputTextureCoordinate"}, 2);
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this._secondPassTexelWidthUniform = GLES20.glGetUniformLocation(this._secondPassProgram, "texelWidth");
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this._secondPassTexelHeightUniform = GLES20.glGetUniformLocation(this._secondPassProgram, "texelHeight");
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this._secondPassThresholdUniform = GLES20.glGetUniformLocation(this._secondPassProgram, "threshold");
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}
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return this._secondPassProgram;
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}
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@Override // com.kofax.kmc.ken.engines.gpu.shaders.TwoPassShader, com.kofax.kmc.ken.engines.gpu.shaders.Shader
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public void destroy() {
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this._vertexShader = null;
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this._firstPassFragmentShader = null;
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this._secondPassFragmentShader = null;
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super.destroy();
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}
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public void setRadius(int i) {
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if (this._radius != i) {
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this._radius = i;
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destroy();
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}
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}
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protected void generateShader() {
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String obj;
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String obj2;
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if (this._vertexShader == null || this._firstPassFragmentShader == null || this._secondPassFragmentShader == null) {
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int i = 1;
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int maxVaryingVectors = this._contextManager.getMaxVaryingVectors() << 1;
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int max = Math.max(this._radius, 1);
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if (maxVaryingVectors % 2 == 0) {
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maxVaryingVectors--;
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}
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float min = Math.min(max, (maxVaryingVectors - 1) / 2);
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String str = "";
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float f = 1.5f;
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int i2 = 1;
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String str2 = str;
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while (true) {
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if (f > min) {
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StringBuilder sb = new StringBuilder();
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sb.append(str2);
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sb.append(f.format("textureCoordinate[%d] = inputTextureCoordinate.xy + (%f * src_size);\n", Integer.valueOf(i), Float.valueOf(min)));
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String obj3 = sb.toString();
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StringBuilder sb2 = new StringBuilder();
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sb2.append(str);
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int i3 = i + 1;
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sb2.append(f.format("sum += texture2D(inputImageTexture, textureCoordinate[%d]).r;\n", Integer.valueOf(i)));
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String obj4 = sb2.toString();
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StringBuilder sb3 = new StringBuilder();
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sb3.append(obj3);
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sb3.append(f.format("textureCoordinate[%d] = inputTextureCoordinate.xy - (%f * src_size);\n", Integer.valueOf(i3), Float.valueOf(min)));
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obj = sb3.toString();
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StringBuilder sb4 = new StringBuilder();
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sb4.append(obj4);
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i += 2;
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sb4.append(f.format("sum += texture2D(inputImageTexture, textureCoordinate[%d]).r;\n", Integer.valueOf(i3)));
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obj2 = sb4.toString();
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i2 += 2;
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break;
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}
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StringBuilder sb5 = new StringBuilder();
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sb5.append(str2);
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sb5.append(f.format("textureCoordinate[%d] = inputTextureCoordinate.xy + (%f * src_size);\n", Integer.valueOf(i), Float.valueOf(f)));
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String obj5 = sb5.toString();
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StringBuilder sb6 = new StringBuilder();
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sb6.append(str);
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int i4 = i + 1;
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sb6.append(f.format("sum += koef2 * texture2D(inputImageTexture, textureCoordinate[%d]).r;\n", Integer.valueOf(i)));
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String obj6 = sb6.toString();
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StringBuilder sb7 = new StringBuilder();
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sb7.append(obj5);
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sb7.append(f.format("textureCoordinate[%d] = inputTextureCoordinate.xy - (%f * src_size);\n", Integer.valueOf(i4), Float.valueOf(f)));
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str2 = sb7.toString();
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StringBuilder sb8 = new StringBuilder();
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sb8.append(obj6);
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i += 2;
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sb8.append(f.format("sum += koef2 * texture2D(inputImageTexture, textureCoordinate[%d]).r;\n", Integer.valueOf(i4)));
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str = sb8.toString();
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f += 2.0f;
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i2 += 4;
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if (f >= 1.0f + min) {
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obj = str2;
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obj2 = str;
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break;
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}
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}
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StringBuilder sb9 = new StringBuilder();
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sb9.append(obj2);
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sb9.append(f.format("float count = %f;\n", Float.valueOf(i2)));
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String obj7 = sb9.toString();
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this._vertexShader = f.format(VertexShaderString, Integer.valueOf(i), obj);
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this._firstPassFragmentShader = f.format(FirstPassFragmentShaderString, Integer.valueOf(i), obj7);
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this._secondPassFragmentShader = f.format(SecondPassFragmentShaderString, Integer.valueOf(i), obj7);
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}
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}
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public int getSecondPassThresholdUniform() {
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return this._secondPassThresholdUniform;
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}
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public int getSecondPassTexelWidthUniform() {
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return this._secondPassTexelWidthUniform;
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}
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public int getSecondPassTexelHeightUniform() {
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return this._secondPassTexelHeightUniform;
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}
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public int getFirstPassThresholdUniform() {
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return this._firstPassThresholdUniform;
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}
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public int getFirstPassTexelWidthUniform() {
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return this._firstPassTexelWidthUniform;
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}
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public int getFirstPassTexelHeightUniform() {
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return this._firstPassTexelHeightUniform;
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}
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}
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