parent
03b5df7a10
commit
3f7dfc3d9b
@ -0,0 +1,20 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
/** |
||||||
|
* An interface that every effect must implement so that there is a common |
||||||
|
* getShader method that every effect class is force to override |
||||||
|
*/ |
||||||
|
public interface ShaderInterface { |
||||||
|
/** |
||||||
|
* Returns Shader code |
||||||
|
* |
||||||
|
* @param mGlSurfaceView |
||||||
|
* send this for every shader but this will only be used when the |
||||||
|
* shader needs it. |
||||||
|
* @return complete shader code in C |
||||||
|
*/ |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView); |
||||||
|
|
||||||
|
} |
@ -0,0 +1,88 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Attempts to auto-fix the preview based on histogram equalization. |
||||||
|
*/ |
||||||
|
public class AutoFixEffect implements ShaderInterface { |
||||||
|
private float scale; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param scale Float, between 0 and 1. Zero means no adjustment, while 1 |
||||||
|
* indicates the maximum amount of adjustment. |
||||||
|
*/ |
||||||
|
public AutoFixEffect(float scale) { |
||||||
|
if (scale < 0.0f) |
||||||
|
scale = 0.0f; |
||||||
|
if (scale > 1.0f) |
||||||
|
scale = 1.0f; |
||||||
|
|
||||||
|
this.scale = scale; |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES tex_sampler_0;\n" |
||||||
|
+ "uniform samplerExternalOES tex_sampler_1;\n" |
||||||
|
+ "uniform samplerExternalOES tex_sampler_2;\n" |
||||||
|
+ " float scale;\n" + " float shift_scale;\n" |
||||||
|
+ " float hist_offset;\n" + " float hist_scale;\n" |
||||||
|
+ " float density_offset;\n" + " float density_scale;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" + "void main() {\n" |
||||||
|
+ " shift_scale = " |
||||||
|
+ (1.0f / 256f) |
||||||
|
+ ";\n" |
||||||
|
+ " hist_offset = " |
||||||
|
+ (0.5f / 766f) |
||||||
|
+ ";\n" |
||||||
|
+ " hist_scale = " |
||||||
|
+ (765f / 766f) |
||||||
|
+ ";\n" |
||||||
|
+ " density_offset = " |
||||||
|
+ (0.5f / 1024f) |
||||||
|
+ ";\n" |
||||||
|
+ " density_scale = " |
||||||
|
+ (1023f / 1024f) |
||||||
|
+ ";\n" |
||||||
|
+ " scale = " |
||||||
|
+ scale |
||||||
|
+ ";\n" |
||||||
|
+ " const vec3 weights = vec3(0.33333, 0.33333, 0.33333);\n" |
||||||
|
+ " vec4 color = texture2D(tex_sampler_0, vTextureCoord);\n" |
||||||
|
+ " float energy = dot(color.rgb, weights);\n" |
||||||
|
+ " float mask_value = energy - 0.5;\n" |
||||||
|
+ " float alpha;\n" |
||||||
|
+ " if (mask_value > 0.0) {\n" |
||||||
|
+ " alpha = (pow(2.0 * mask_value, 1.5) - 1.0) * scale + 1.0;\n" |
||||||
|
+ " } else { \n" |
||||||
|
+ " alpha = (pow(2.0 * mask_value, 2.0) - 1.0) * scale + 1.0;\n" |
||||||
|
+ " }\n" |
||||||
|
+ " float index = energy * hist_scale + hist_offset;\n" |
||||||
|
+ " vec4 temp = texture2D(tex_sampler_1, vec2(index, 0.5));\n" |
||||||
|
+ " float value = temp.g + temp.r * shift_scale;\n" |
||||||
|
+ " index = value * density_scale + density_offset;\n" |
||||||
|
+ " temp = texture2D(tex_sampler_2, vec2(index, 0.5));\n" |
||||||
|
+ " value = temp.g + temp.r * shift_scale;\n" |
||||||
|
+ " float dst_energy = energy * alpha + value * (1.0 - alpha);\n" |
||||||
|
+ " float max_energy = energy / max(color.r, max(color.g, color.b));\n" |
||||||
|
+ " if (dst_energy > max_energy) {\n" |
||||||
|
+ " dst_energy = max_energy;\n" |
||||||
|
+ " }\n" |
||||||
|
+ " if (energy == 0.0) {\n" |
||||||
|
+ " gl_FragColor = color;\n" |
||||||
|
+ " } else {\n" |
||||||
|
+ " gl_FragColor = vec4(color.rgb * dst_energy / energy, color.a);\n" |
||||||
|
+ " }\n" + "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,34 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Converts the preview into black and white colors |
||||||
|
*/ |
||||||
|
public class BlackAndWhiteEffect implements ShaderInterface { |
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public BlackAndWhiteEffect() { |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" + "void main() {\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float colorR = (color.r + color.g + color.b) / 3.0;\n" |
||||||
|
+ " float colorG = (color.r + color.g + color.b) / 3.0;\n" |
||||||
|
+ " float colorB = (color.r + color.g + color.b) / 3.0;\n" |
||||||
|
+ " gl_FragColor = vec4(colorR, colorG, colorB, color.a);\n" |
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,43 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Adjusts the brightness of the preview. |
||||||
|
*/ |
||||||
|
public class BrightnessEffect implements ShaderInterface { |
||||||
|
private float brightnessValue; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param brightnessvalue Range should be between 0.1- 2.0 with 1.0 being normal. |
||||||
|
*/ |
||||||
|
public BrightnessEffect(float brightnessvalue) { |
||||||
|
if (brightnessvalue < 0.1f) |
||||||
|
brightnessvalue = 0.1f; |
||||||
|
if (brightnessvalue > 2.0f) |
||||||
|
brightnessvalue = 2.0f; |
||||||
|
|
||||||
|
this.brightnessValue = brightnessvalue; |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ "float brightness ;\n" + "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main() {\n" + " brightness =" + brightnessValue |
||||||
|
+ ";\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " gl_FragColor = brightness * color;\n" + "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
} |
@ -0,0 +1,41 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
/** |
||||||
|
* Adjusts the contrast of the preview. |
||||||
|
*/ |
||||||
|
public class ContrastEffect implements ShaderInterface { |
||||||
|
private float contrast; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param contrast Range should be between 0.1- 2.0 with 1.0 being normal. |
||||||
|
*/ |
||||||
|
public ContrastEffect(float contrast) { |
||||||
|
if (contrast < 0.1f) |
||||||
|
contrast = 0.1f; |
||||||
|
if (contrast > 2.0f) |
||||||
|
contrast = 2.0f; |
||||||
|
|
||||||
|
this.contrast = contrast; |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " float contrast;\n" + "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main() {\n" + " contrast =" + contrast + ";\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " color -= 0.5;\n" + " color *= contrast;\n" |
||||||
|
+ " color += 0.5;\n" + " gl_FragColor = color;\n" + "}\n"; |
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
} |
@ -0,0 +1,45 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Applies a cross process effect on preview, in which the red and green channels |
||||||
|
* are enhanced while the blue channel is restricted. |
||||||
|
*/ |
||||||
|
public class CrossProcessEffect implements ShaderInterface { |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public CrossProcessEffect() { |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" + "void main() {\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " vec3 ncolor = vec3(0.0, 0.0, 0.0);\n" + " float value;\n" |
||||||
|
+ " if (color.r < 0.5) {\n" + " value = color.r;\n" |
||||||
|
+ " } else {\n" + " value = 1.0 - color.r;\n" + " }\n" |
||||||
|
+ " float red = 4.0 * value * value * value;\n" |
||||||
|
+ " if (color.r < 0.5) {\n" + " ncolor.r = red;\n" |
||||||
|
+ " } else {\n" + " ncolor.r = 1.0 - red;\n" + " }\n" |
||||||
|
+ " if (color.g < 0.5) {\n" + " value = color.g;\n" |
||||||
|
+ " } else {\n" + " value = 1.0 - color.g;\n" + " }\n" |
||||||
|
+ " float green = 2.0 * value * value;\n" |
||||||
|
+ " if (color.g < 0.5) {\n" + " ncolor.g = green;\n" |
||||||
|
+ " } else {\n" + " ncolor.g = 1.0 - green;\n" + " }\n" |
||||||
|
+ " ncolor.b = color.b * 0.5 + 0.25;\n" |
||||||
|
+ " gl_FragColor = vec4(ncolor.rgb, color.a);\n" + "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
} |
@ -0,0 +1,114 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
import java.util.Date; |
||||||
|
import java.util.Random; |
||||||
|
|
||||||
|
/** |
||||||
|
* Applies black and white documentary style effect on preview. |
||||||
|
*/ |
||||||
|
public class DocumentaryEffect implements ShaderInterface { |
||||||
|
private int mWidth; |
||||||
|
private int mHeight; |
||||||
|
private Random mRandom; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public DocumentaryEffect() { |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
/** |
||||||
|
* Init all values that will be used by this shader. |
||||||
|
* |
||||||
|
* @param mGlSurfaceView which is responsible for displaying your video |
||||||
|
*/ |
||||||
|
private void initValues(GLSurfaceView mGlSurfaceView) { |
||||||
|
mWidth = mGlSurfaceView.getWidth(); |
||||||
|
mHeight = mGlSurfaceView.getHeight(); |
||||||
|
mRandom = new Random(new Date().getTime()); |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
initValues(mGlSurfaceView); |
||||||
|
float scale[] = new float[2]; |
||||||
|
if (mWidth > mHeight) { |
||||||
|
scale[0] = 1f; |
||||||
|
scale[1] = ((float) mHeight) / mWidth; |
||||||
|
} else { |
||||||
|
scale[0] = ((float) mWidth) / mHeight; |
||||||
|
scale[1] = 1f; |
||||||
|
} |
||||||
|
float max_dist = ((float) Math.sqrt(scale[0] * scale[0] + scale[1] |
||||||
|
* scale[1])) * 0.5f; |
||||||
|
|
||||||
|
float seed[] = {mRandom.nextFloat(), mRandom.nextFloat()}; |
||||||
|
|
||||||
|
String scaleString[] = new String[2]; |
||||||
|
String seedString[] = new String[2]; |
||||||
|
|
||||||
|
scaleString[0] = "scale[0] = " + scale[0] + ";\n"; |
||||||
|
scaleString[1] = "scale[1] = " + scale[1] + ";\n"; |
||||||
|
|
||||||
|
seedString[0] = "seed[0] = " + seed[0] + ";\n"; |
||||||
|
seedString[1] = "seed[1] = " + seed[1] + ";\n"; |
||||||
|
|
||||||
|
String inv_max_distString = "inv_max_dist = " + 1.0f / max_dist + ";\n"; |
||||||
|
String stepsizeString = "stepsize = " + 1.0f / 255.0f + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " vec2 seed;\n" |
||||||
|
+ " float stepsize;\n" |
||||||
|
+ " float inv_max_dist;\n" |
||||||
|
+ " vec2 scale;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "float rand(vec2 loc) {\n" |
||||||
|
+ " float theta1 = dot(loc, vec2(0.9898, 0.233));\n" |
||||||
|
+ " float theta2 = dot(loc, vec2(12.0, 78.0));\n" |
||||||
|
+ " float value = cos(theta1) * sin(theta2) + sin(theta1) * cos(theta2);\n" |
||||||
|
+ |
||||||
|
// keep value of part1 in range: (2^-14 to 2^14).
|
||||||
|
" float temp = mod(197.0 * value, 1.0) + value;\n" |
||||||
|
+ " float part1 = mod(220.0 * temp, 1.0) + temp;\n" |
||||||
|
+ " float part2 = value * 0.5453;\n" |
||||||
|
+ " float part3 = cos(theta1 + theta2) * 0.43758;\n" |
||||||
|
+ " return fract(part1 + part2 + part3);\n" |
||||||
|
+ "}\n" |
||||||
|
+ "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ scaleString[0] |
||||||
|
+ scaleString[1] |
||||||
|
+ seedString[0] |
||||||
|
+ seedString[1] |
||||||
|
+ inv_max_distString |
||||||
|
+ stepsizeString |
||||||
|
|
||||||
|
// black white
|
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float dither = rand(vTextureCoord + seed);\n" |
||||||
|
+ " vec3 xform = clamp(2.0 * color.rgb, 0.0, 1.0);\n" |
||||||
|
+ " vec3 temp = clamp(2.0 * (color.rgb + stepsize), 0.0, 1.0);\n" |
||||||
|
+ " vec3 new_color = clamp(xform + (temp - xform) * (dither - 0.5), 0.0, 1.0);\n" |
||||||
|
+ |
||||||
|
// grayscale
|
||||||
|
" float gray = dot(new_color, vec3(0.299, 0.587, 0.114));\n" |
||||||
|
+ " new_color = vec3(gray, gray, gray);\n" |
||||||
|
+ |
||||||
|
// vignette
|
||||||
|
" vec2 coord = vTextureCoord - vec2(0.5, 0.5);\n" |
||||||
|
+ " float dist = length(coord * scale);\n" |
||||||
|
+ " float lumen = 0.85 / (1.0 + exp((dist * inv_max_dist - 0.83) * 20.0)) + 0.15;\n" |
||||||
|
+ " gl_FragColor = vec4(new_color * lumen, color.a);\n" |
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,71 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.graphics.Color; |
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Representation of preview using only two color tones. |
||||||
|
*/ |
||||||
|
public class DuotoneEffect implements ShaderInterface { |
||||||
|
// Default values
|
||||||
|
private int mFirstColor = Color.MAGENTA; |
||||||
|
private int mSecondColor = Color.YELLOW; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize effect |
||||||
|
* |
||||||
|
* @param mFirstColor Integer, representing an ARGB color with 8 bits per channel. |
||||||
|
* May be created using Color class. |
||||||
|
* @param mSecondColor Integer, representing an ARGB color with 8 bits per channel. |
||||||
|
* May be created using Color class. |
||||||
|
*/ |
||||||
|
public DuotoneEffect(int mFirstColor, int mSecondColor) { |
||||||
|
this.mFirstColor = mFirstColor; |
||||||
|
this.mSecondColor = mSecondColor; |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
float first[] = {Color.red(mFirstColor) / 255f, |
||||||
|
Color.green(mFirstColor) / 255f, Color.blue(mFirstColor) / 255f}; |
||||||
|
float second[] = {Color.red(mSecondColor) / 255f, |
||||||
|
Color.green(mSecondColor) / 255f, |
||||||
|
Color.blue(mSecondColor) / 255f}; |
||||||
|
|
||||||
|
String firstColorString[] = new String[3]; |
||||||
|
String secondColorString[] = new String[3]; |
||||||
|
|
||||||
|
firstColorString[0] = "first[0] = " + first[0] + ";\n"; |
||||||
|
firstColorString[1] = "first[1] = " + first[1] + ";\n"; |
||||||
|
firstColorString[2] = "first[2] = " + first[2] + ";\n"; |
||||||
|
|
||||||
|
secondColorString[0] = "second[0] = " + second[0] + ";\n"; |
||||||
|
secondColorString[1] = "second[1] = " + second[1] + ";\n"; |
||||||
|
secondColorString[2] = "second[2] = " + second[2] + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " vec3 first;\n" |
||||||
|
+ " vec3 second;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ firstColorString[0] |
||||||
|
+ firstColorString[1] |
||||||
|
+ firstColorString[2] |
||||||
|
+ secondColorString[0] |
||||||
|
+ secondColorString[1] |
||||||
|
+ secondColorString[2] |
||||||
|
|
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float energy = (color.r + color.g + color.b) * 0.3333;\n" |
||||||
|
+ " vec3 new_color = (1.0 - energy) * first + energy * second;\n" |
||||||
|
+ " gl_FragColor = vec4(new_color.rgb, color.a);\n" + "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,64 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Applies back-light filling to the preview. |
||||||
|
*/ |
||||||
|
public class FillLightEffect implements ShaderInterface { |
||||||
|
private float strength = 0f; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param strength Float, between 0 and 1. 0 means no change. |
||||||
|
*/ |
||||||
|
public FillLightEffect(float strength) { |
||||||
|
if (strength < 0.0f) |
||||||
|
strength = 0f; |
||||||
|
if (strength > 1.0f) |
||||||
|
strength = 1f; |
||||||
|
|
||||||
|
this.strength = strength; |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
float fade_gamma = 0.3f; |
||||||
|
float amt = 1.0f - strength; |
||||||
|
float mult = 1.0f / (amt * 0.7f + 0.3f); |
||||||
|
float faded = fade_gamma + (1.0f - fade_gamma) * mult; |
||||||
|
float igamma = 1.0f / faded; |
||||||
|
|
||||||
|
String multString = "mult = " + mult + ";\n"; |
||||||
|
String igammaString = "igamma = " + igamma + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " float mult;\n" |
||||||
|
+ " float igamma;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main()\n" |
||||||
|
+ "{\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ multString |
||||||
|
+ igammaString |
||||||
|
|
||||||
|
+ " const vec3 color_weights = vec3(0.25, 0.5, 0.25);\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float lightmask = dot(color.rgb, color_weights);\n" |
||||||
|
+ " float backmask = (1.0 - lightmask);\n" |
||||||
|
+ " vec3 ones = vec3(1.0, 1.0, 1.0);\n" |
||||||
|
+ " vec3 diff = pow(mult * color.rgb, igamma * ones) - color.rgb;\n" |
||||||
|
+ " diff = min(diff, 1.0);\n" |
||||||
|
+ " vec3 new_color = min(color.rgb + diff * backmask, 1.0);\n" |
||||||
|
+ " gl_FragColor = vec4(new_color, color.a);\n" + "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
} |
@ -0,0 +1,46 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Apply Gamma Effect on preview being played |
||||||
|
*/ |
||||||
|
public class GammaEffect implements ShaderInterface { |
||||||
|
private float gammaValue; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param gammaValue Range should be between 0.0 - 2.0 with 1.0 being normal. |
||||||
|
*/ |
||||||
|
public GammaEffect(float gammaValue) { |
||||||
|
if (gammaValue < 0.0f) |
||||||
|
gammaValue = 0.0f; |
||||||
|
if (gammaValue > 2.0f) |
||||||
|
gammaValue = 2.0f; |
||||||
|
this.gammaValue = gammaValue; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
|
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ "float gamma=" + gammaValue + ";\n" |
||||||
|
|
||||||
|
+ "void main() {\n" |
||||||
|
|
||||||
|
+ "vec4 textureColor = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ "gl_FragColor = vec4(pow(textureColor.rgb, vec3(gamma)), textureColor.w);\n" |
||||||
|
|
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
} |
||||||
|
} |
@ -0,0 +1,103 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
import java.util.Date; |
||||||
|
import java.util.Random; |
||||||
|
|
||||||
|
/** |
||||||
|
* Applies film grain effect to preview. |
||||||
|
*/ |
||||||
|
public class GrainEffect implements ShaderInterface { |
||||||
|
private int mWidth; |
||||||
|
private int mHeight; |
||||||
|
private float strength; |
||||||
|
private Random mRandom; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param strength Float, between 0 and 1. Zero means no distortion, while 1 |
||||||
|
* indicates the maximum amount of adjustment. |
||||||
|
*/ |
||||||
|
public GrainEffect(float strength) { |
||||||
|
if (strength < 0.0f) |
||||||
|
strength = 0.0f; |
||||||
|
if (strength > 1.0f) |
||||||
|
strength = 1.0f; |
||||||
|
this.strength = strength; |
||||||
|
} |
||||||
|
|
||||||
|
/** |
||||||
|
* Init all values that will be used by this shader. |
||||||
|
* |
||||||
|
* @param mGlSurfaceView which is responsible for displaying your video |
||||||
|
*/ |
||||||
|
private void initValues(GLSurfaceView mGlSurfaceView) { |
||||||
|
mWidth = mGlSurfaceView.getWidth(); |
||||||
|
mHeight = mGlSurfaceView.getHeight(); |
||||||
|
mRandom = new Random(new Date().getTime()); |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
initValues(mGlSurfaceView); |
||||||
|
|
||||||
|
float seed[] = {mRandom.nextFloat(), mRandom.nextFloat()}; |
||||||
|
String scaleString = "scale = " + strength + ";\n"; |
||||||
|
String seedString[] = new String[2]; |
||||||
|
seedString[0] = "seed[0] = " + seed[0] + ";\n"; |
||||||
|
seedString[1] = "seed[1] = " + seed[1] + ";\n"; |
||||||
|
String stepX = "stepX = " + 0.5f / mWidth + ";\n"; |
||||||
|
String stepY = "stepY = " + 0.5f / mHeight + ";\n"; |
||||||
|
|
||||||
|
// locString[1] = "loc[1] = loc[1]+" + seedString[1] + ";\n";
|
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ " vec2 seed;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "uniform samplerExternalOES tex_sampler_0;\n" |
||||||
|
+ "uniform samplerExternalOES tex_sampler_1;\n" |
||||||
|
+ "float scale;\n" |
||||||
|
+ " float stepX;\n" |
||||||
|
+ " float stepY;\n" |
||||||
|
+ "float rand(vec2 loc) {\n" |
||||||
|
+ " float theta1 = dot(loc, vec2(0.9898, 0.233));\n" |
||||||
|
+ " float theta2 = dot(loc, vec2(12.0, 78.0));\n" |
||||||
|
+ " float value = cos(theta1) * sin(theta2) + sin(theta1) * cos(theta2);\n" |
||||||
|
+ |
||||||
|
// keep value of part1 in range: (2^-14 to 2^14).
|
||||||
|
" float temp = mod(197.0 * value, 1.0) + value;\n" |
||||||
|
+ " float part1 = mod(220.0 * temp, 1.0) + temp;\n" |
||||||
|
+ " float part2 = value * 0.5453;\n" |
||||||
|
+ " float part3 = cos(theta1 + theta2) * 0.43758;\n" |
||||||
|
+ " float sum = (part1 + part2 + part3);\n" |
||||||
|
+ " return fract(sum)*scale;\n" |
||||||
|
+ "}\n" |
||||||
|
+ "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ seedString[0] |
||||||
|
+ seedString[1] |
||||||
|
+ scaleString |
||||||
|
+ stepX |
||||||
|
+ stepY |
||||||
|
+ " float noise = texture2D(tex_sampler_1, vTextureCoord + vec2(-stepX, -stepY)).r * 0.224;\n" |
||||||
|
+ " noise += texture2D(tex_sampler_1, vTextureCoord + vec2(-stepX, stepY)).r * 0.224;\n" |
||||||
|
+ " noise += texture2D(tex_sampler_1, vTextureCoord + vec2(stepX, -stepY)).r * 0.224;\n" |
||||||
|
+ " noise += texture2D(tex_sampler_1, vTextureCoord + vec2(stepX, stepY)).r * 0.224;\n" |
||||||
|
+ " noise += 0.4448;\n" |
||||||
|
+ " noise *= scale;\n" |
||||||
|
+ " vec4 color = texture2D(tex_sampler_0, vTextureCoord);\n" |
||||||
|
+ " float energy = 0.33333 * color.r + 0.33333 * color.g + 0.33333 * color.b;\n" |
||||||
|
+ " float mask = (1.0 - sqrt(energy));\n" |
||||||
|
+ " float weight = 1.0 - 1.333 * mask * noise;\n" |
||||||
|
+ " gl_FragColor = vec4(color.rgb * weight, color.a);\n" |
||||||
|
+ " gl_FragColor = gl_FragColor+vec4(rand(vTextureCoord + seed), rand(vTextureCoord + seed),rand(vTextureCoord + seed),1);\n" |
||||||
|
+ "}\n"; |
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,32 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Converts preview to GreyScale. |
||||||
|
*/ |
||||||
|
public class GreyScaleEffect implements ShaderInterface { |
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public GreyScaleEffect() { |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" + "void main() {\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float y = dot(color, vec4(0.299, 0.587, 0.114, 0));\n" |
||||||
|
+ " gl_FragColor = vec4(y, y, y, color.a);\n" + "}\n"; |
||||||
|
; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,70 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Apply Hue effect on the preview |
||||||
|
*/ |
||||||
|
public class HueEffect implements ShaderInterface { |
||||||
|
float hueValue; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* <p> |
||||||
|
* <img alt="Hue value chart" width="400" height="350" src="https://cloud.githubusercontent.com/assets/2201511/21810115/b99ac22a-d74a-11e6-9f6c-ef74d15c88c7.jpg" > |
||||||
|
* |
||||||
|
* @param hueDegrees Range of value should be between 0 to 360 degrees as described in the image above |
||||||
|
*/ |
||||||
|
public HueEffect(float hueDegrees) { |
||||||
|
// manipulating input value so that we can map it on 360 degree circle
|
||||||
|
hueValue = ((hueDegrees - 45) / 45f + 0.5f) * -1; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
|
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ "float hue=" + hueValue + ";\n" |
||||||
|
|
||||||
|
+ "void main() {\n" |
||||||
|
|
||||||
|
+ "vec4 kRGBToYPrime = vec4 (0.299, 0.587, 0.114, 0.0);\n" |
||||||
|
+ "vec4 kRGBToI = vec4 (0.595716, -0.274453, -0.321263, 0.0);\n" |
||||||
|
+ "vec4 kRGBToQ = vec4 (0.211456, -0.522591, 0.31135, 0.0);\n" |
||||||
|
|
||||||
|
+ "vec4 kYIQToR = vec4 (1.0, 0.9563, 0.6210, 0.0);\n" |
||||||
|
+ "vec4 kYIQToG = vec4 (1.0, -0.2721, -0.6474, 0.0);\n" |
||||||
|
+ "vec4 kYIQToB = vec4 (1.0, -1.1070, 1.7046, 0.0);\n" |
||||||
|
|
||||||
|
|
||||||
|
+ "vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
|
||||||
|
+ "float YPrime = dot(color, kRGBToYPrime);\n" |
||||||
|
+ "float I = dot(color, kRGBToI);\n" |
||||||
|
+ "float Q = dot(color, kRGBToQ);\n" |
||||||
|
|
||||||
|
+ "float chroma = sqrt (I * I + Q * Q);\n" |
||||||
|
|
||||||
|
+ "Q = chroma * sin (hue);\n" |
||||||
|
|
||||||
|
+ "I = chroma * cos (hue);\n" |
||||||
|
|
||||||
|
+ "vec4 yIQ = vec4 (YPrime, I, Q, 0.0);\n" |
||||||
|
|
||||||
|
+ "color.r = dot (yIQ, kYIQToR);\n" |
||||||
|
+ "color.g = dot (yIQ, kYIQToG);\n" |
||||||
|
+ "color.b = dot (yIQ, kYIQToB);\n" |
||||||
|
+ "gl_FragColor = color;\n" |
||||||
|
|
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
} |
||||||
|
} |
@ -0,0 +1,34 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Inverts the preview colors. This can also be known as negative Effect. |
||||||
|
*/ |
||||||
|
public class InvertColorsEffect implements ShaderInterface { |
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public InvertColorsEffect() { |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" + "void main() {\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float colorR = (1.0 - color.r) / 1.0;\n" |
||||||
|
+ " float colorG = (1.0 - color.g) / 1.0;\n" |
||||||
|
+ " float colorB = (1.0 - color.b) / 1.0;\n" |
||||||
|
+ " gl_FragColor = vec4(colorR, colorG, colorB, color.a);\n" |
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,158 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
import java.util.Date; |
||||||
|
import java.util.Random; |
||||||
|
|
||||||
|
/** |
||||||
|
* Applies lomo-camera style effect to preview. |
||||||
|
*/ |
||||||
|
public class LamoishEffect implements ShaderInterface { |
||||||
|
private int mWidth; |
||||||
|
private int mHeight; |
||||||
|
private Random mRandom; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public LamoishEffect() { |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
/** |
||||||
|
* Init all values that will be used by this shader. |
||||||
|
* |
||||||
|
* @param mGlSurfaceView which is responsible for displaying your video |
||||||
|
*/ |
||||||
|
private void initValues(GLSurfaceView mGlSurfaceView) { |
||||||
|
mWidth = mGlSurfaceView.getWidth(); |
||||||
|
mHeight = mGlSurfaceView.getHeight(); |
||||||
|
mRandom = new Random(new Date().getTime()); |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
initValues(mGlSurfaceView); |
||||||
|
float scale[] = new float[2]; |
||||||
|
if (mWidth > mHeight) { |
||||||
|
scale[0] = 1f; |
||||||
|
scale[1] = ((float) mHeight) / mWidth; |
||||||
|
} else { |
||||||
|
scale[0] = ((float) mWidth) / mHeight; |
||||||
|
scale[1] = 1f; |
||||||
|
} |
||||||
|
float max_dist = ((float) Math.sqrt(scale[0] * scale[0] + scale[1] |
||||||
|
* scale[1])) * 0.5f; |
||||||
|
|
||||||
|
float seed[] = {mRandom.nextFloat(), mRandom.nextFloat()}; |
||||||
|
|
||||||
|
String scaleString[] = new String[2]; |
||||||
|
String seedString[] = new String[2]; |
||||||
|
|
||||||
|
scaleString[0] = "scale[0] = " + scale[0] + ";\n"; |
||||||
|
scaleString[1] = "scale[1] = " + scale[1] + ";\n"; |
||||||
|
|
||||||
|
seedString[0] = "seed[0] = " + seed[0] + ";\n"; |
||||||
|
seedString[1] = "seed[1] = " + seed[1] + ";\n"; |
||||||
|
|
||||||
|
String inv_max_distString = "inv_max_dist = " + 1.0f / max_dist + ";\n"; |
||||||
|
String stepsizeString = "stepsize = " + 1.0f / 255.0f + ";\n"; |
||||||
|
String stepsizeXString = "stepsizeX = " + 1.0f / mWidth + ";\n"; |
||||||
|
String stepsizeYString = "stepsizeY = " + 1.0f / mHeight + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " vec2 seed;\n" |
||||||
|
+ " float stepsizeX;\n" |
||||||
|
+ " float stepsizeY;\n" |
||||||
|
+ " float stepsize;\n" |
||||||
|
+ " vec2 scale;\n" |
||||||
|
+ " float inv_max_dist;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "float rand(vec2 loc) {\n" |
||||||
|
+ " float theta1 = dot(loc, vec2(0.9898, 0.233));\n" |
||||||
|
+ " float theta2 = dot(loc, vec2(12.0, 78.0));\n" |
||||||
|
+ " float value = cos(theta1) * sin(theta2) + sin(theta1) * cos(theta2);\n" |
||||||
|
+ |
||||||
|
// keep value of part1 in range: (2^-14 to 2^14).
|
||||||
|
" float temp = mod(197.0 * value, 1.0) + value;\n" |
||||||
|
+ " float part1 = mod(220.0 * temp, 1.0) + temp;\n" |
||||||
|
+ " float part2 = value * 0.5453;\n" |
||||||
|
+ " float part3 = cos(theta1 + theta2) * 0.43758;\n" |
||||||
|
+ " return fract(part1 + part2 + part3);\n" + "}\n" |
||||||
|
+ "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ scaleString[0] |
||||||
|
+ scaleString[1] |
||||||
|
+ seedString[0] |
||||||
|
+ seedString[1] |
||||||
|
+ inv_max_distString |
||||||
|
+ stepsizeString |
||||||
|
+ stepsizeXString |
||||||
|
+ stepsizeYString |
||||||
|
// sharpen
|
||||||
|
+ " vec3 nbr_color = vec3(0.0, 0.0, 0.0);\n" |
||||||
|
+ " vec2 coord;\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " coord.x = vTextureCoord.x - 0.5 * stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y - stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " coord.x = vTextureCoord.x - stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y + 0.5 * stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " coord.x = vTextureCoord.x + stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y - 0.5 * stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " coord.x = vTextureCoord.x + stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y + 0.5 * stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " vec3 s_color = vec3(color.rgb + 0.3 * nbr_color);\n" |
||||||
|
+ |
||||||
|
// cross process
|
||||||
|
" vec3 c_color = vec3(0.0, 0.0, 0.0);\n" |
||||||
|
+ " float value;\n" |
||||||
|
+ " if (s_color.r < 0.5) {\n" |
||||||
|
+ " value = s_color.r;\n" |
||||||
|
+ " } else {\n" |
||||||
|
+ " value = 1.0 - s_color.r;\n" |
||||||
|
+ " }\n" |
||||||
|
+ " float red = 4.0 * value * value * value;\n" |
||||||
|
+ " if (s_color.r < 0.5) {\n" |
||||||
|
+ " c_color.r = red;\n" |
||||||
|
+ " } else {\n" |
||||||
|
+ " c_color.r = 1.0 - red;\n" |
||||||
|
+ " }\n" |
||||||
|
+ " if (s_color.g < 0.5) {\n" |
||||||
|
+ " value = s_color.g;\n" |
||||||
|
+ " } else {\n" |
||||||
|
+ " value = 1.0 - s_color.g;\n" |
||||||
|
+ " }\n" |
||||||
|
+ " float green = 2.0 * value * value;\n" |
||||||
|
+ " if (s_color.g < 0.5) {\n" |
||||||
|
+ " c_color.g = green;\n" |
||||||
|
+ " } else {\n" |
||||||
|
+ " c_color.g = 1.0 - green;\n" |
||||||
|
+ " }\n" |
||||||
|
+ " c_color.b = s_color.b * 0.5 + 0.25;\n" |
||||||
|
+ |
||||||
|
// blackwhite
|
||||||
|
" float dither = rand(vTextureCoord + seed);\n" |
||||||
|
+ " vec3 xform = clamp((c_color.rgb - 0.15) * 1.53846, 0.0, 1.0);\n" |
||||||
|
+ " vec3 temp = clamp((color.rgb + stepsize - 0.15) * 1.53846, 0.0, 1.0);\n" |
||||||
|
+ " vec3 bw_color = clamp(xform + (temp - xform) * (dither - 0.5), 0.0, 1.0);\n" |
||||||
|
+ |
||||||
|
// vignette
|
||||||
|
" coord = vTextureCoord - vec2(0.5, 0.5);\n" |
||||||
|
+ " float dist = length(coord * scale);\n" |
||||||
|
+ " float lumen = 0.85 / (1.0 + exp((dist * inv_max_dist - 0.73) * 20.0)) + 0.15;\n" |
||||||
|
+ " gl_FragColor = vec4(bw_color * lumen, color.a);\n" + "}\n"; |
||||||
|
; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,31 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Displays the normal preview without any effect. |
||||||
|
*/ |
||||||
|
public class NoEffect implements ShaderInterface { |
||||||
|
/** |
||||||
|
* Initialize |
||||||
|
*/ |
||||||
|
public NoEffect() { |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ "void main() {\n" |
||||||
|
+ " gl_FragColor = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,33 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Applies Posterization effect to Preview. |
||||||
|
*/ |
||||||
|
public class PosterizeEffect implements ShaderInterface { |
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public PosterizeEffect() { |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" + "void main() {\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " vec3 pcolor;\n" |
||||||
|
+ " pcolor.r = (color.r >= 0.5) ? 0.75 : 0.25;\n" |
||||||
|
+ " pcolor.g = (color.g >= 0.5) ? 0.75 : 0.25;\n" |
||||||
|
+ " pcolor.b = (color.b >= 0.5) ? 0.75 : 0.25;\n" |
||||||
|
+ " gl_FragColor = vec4(pcolor, color.a);\n" + "}\n"; |
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,86 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Adjusts color saturation of preview. |
||||||
|
*/ |
||||||
|
public class SaturationEffect implements ShaderInterface { |
||||||
|
private float scale = 0f; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param scale Float, between -1 and 1. 0 means no change, while -1 indicates |
||||||
|
* full desaturation, i.e. grayscale. |
||||||
|
*/ |
||||||
|
public SaturationEffect(float scale) { |
||||||
|
|
||||||
|
this.scale = scale; |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
float shift = 1.0f / 255.0f; |
||||||
|
float weights[] = {2f / 8f, 5f / 8f, 1f / 8f}; |
||||||
|
float exponents[] = new float[3]; |
||||||
|
|
||||||
|
String weightsString[] = new String[3]; |
||||||
|
String exponentsString[] = new String[3]; |
||||||
|
exponentsString[0] = ""; |
||||||
|
exponentsString[1] = ""; |
||||||
|
exponentsString[2] = ""; |
||||||
|
String scaleString = ""; |
||||||
|
|
||||||
|
if (scale > 0.0f) { |
||||||
|
exponents[0] = (0.9f * scale) + 1.0f; |
||||||
|
exponents[1] = (2.1f * scale) + 1.0f; |
||||||
|
exponents[2] = (2.7f * scale) + 1.0f; |
||||||
|
exponentsString[0] = "exponents[0] = " + exponents[0] + ";\n"; |
||||||
|
exponentsString[1] = "exponents[1] = " + exponents[1] + ";\n"; |
||||||
|
exponentsString[2] = "exponents[2] = " + exponents[2] + ";\n"; |
||||||
|
} else |
||||||
|
scaleString = "scale = " + (1.0f + scale) + ";\n"; |
||||||
|
|
||||||
|
weightsString[0] = "weights[0] = " + weights[0] + ";\n"; |
||||||
|
weightsString[1] = "weights[1] = " + weights[1] + ";\n"; |
||||||
|
weightsString[2] = "weights[2] = " + weights[2] + ";\n"; |
||||||
|
String shiftString = "shift = " + shift + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" + " float scale;\n" |
||||||
|
+ " float shift;\n" + " vec3 weights;\n" + " vec3 exponents;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" + "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ weightsString[0] |
||||||
|
+ weightsString[1] |
||||||
|
+ weightsString[2] |
||||||
|
+ shiftString |
||||||
|
+ scaleString |
||||||
|
+ " vec4 oldcolor = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float kv = dot(oldcolor.rgb, weights) + shift;\n" |
||||||
|
+ " vec3 new_color = scale * oldcolor.rgb + (1.0 - scale) * kv;\n" |
||||||
|
+ " gl_FragColor= vec4(new_color, oldcolor.a);\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ weightsString[0] |
||||||
|
+ weightsString[1] |
||||||
|
+ weightsString[2] |
||||||
|
+ exponentsString[0] |
||||||
|
+ exponentsString[1] |
||||||
|
+ exponentsString[2] |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float de = dot(color.rgb, weights);\n" |
||||||
|
+ " float inv_de = 1.0 / de;\n" |
||||||
|
+ " vec3 verynew_color = de * pow(color.rgb * inv_de, exponents);\n" |
||||||
|
+ " float max_color = max(max(max(verynew_color.r, verynew_color.g), verynew_color.b), 1.0);\n" |
||||||
|
+ " gl_FragColor = gl_FragColor+vec4(verynew_color / max_color, color.a);\n" |
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
} |
@ -0,0 +1,49 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Converts preview to Sepia tone. |
||||||
|
*/ |
||||||
|
public class SepiaEffect implements ShaderInterface { |
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
*/ |
||||||
|
public SepiaEffect() { |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
float weights[] = {805.0f / 2048.0f, 715.0f / 2048.0f, |
||||||
|
557.0f / 2048.0f, 1575.0f / 2048.0f, 1405.0f / 2048.0f, |
||||||
|
1097.0f / 2048.0f, 387.0f / 2048.0f, 344.0f / 2048.0f, |
||||||
|
268.0f / 2048.0f}; |
||||||
|
String matrixString[] = new String[9]; |
||||||
|
|
||||||
|
matrixString[0] = " matrix[0][0]=" + weights[0] + ";\n"; |
||||||
|
matrixString[1] = " matrix[0][1]=" + weights[1] + ";\n"; |
||||||
|
matrixString[2] = " matrix[0][2]=" + weights[2] + ";\n"; |
||||||
|
matrixString[3] = " matrix[1][0]=" + weights[3] + ";\n"; |
||||||
|
matrixString[4] = " matrix[1][1]=" + weights[4] + ";\n"; |
||||||
|
matrixString[5] = " matrix[1][2]=" + weights[5] + ";\n"; |
||||||
|
matrixString[6] = " matrix[2][0]=" + weights[6] + ";\n"; |
||||||
|
matrixString[7] = " matrix[2][1]=" + weights[7] + ";\n"; |
||||||
|
matrixString[8] = " matrix[2][2]=" + weights[8] + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" + " mat3 matrix;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" + "void main() {\n" |
||||||
|
+ matrixString[0] + matrixString[1] + matrixString[2] |
||||||
|
+ matrixString[3] + matrixString[4] + matrixString[5] |
||||||
|
+ matrixString[6] + matrixString[7] + matrixString[8] |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " vec3 new_color = min(matrix * color.rgb, 1.0);\n" |
||||||
|
+ " gl_FragColor = vec4(new_color.rgb, color.a);\n" + "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,80 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Sharpens the preview. |
||||||
|
*/ |
||||||
|
public class SharpnessEffect implements ShaderInterface { |
||||||
|
private int mWidth; |
||||||
|
private int mHeight; |
||||||
|
private float scale = 0f; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param scale Float, between 0 and 1. 0 means no change. |
||||||
|
*/ |
||||||
|
public SharpnessEffect(float scale) { |
||||||
|
if (scale < 0.0f) |
||||||
|
scale = 0.0f; |
||||||
|
if (scale > 1.0f) |
||||||
|
scale = 1.0f; |
||||||
|
|
||||||
|
this.scale = scale; |
||||||
|
} |
||||||
|
|
||||||
|
/** |
||||||
|
* Init all values that will be used by this shader. |
||||||
|
* |
||||||
|
* @param mGlSurfaceView which is responsible for displaying your video |
||||||
|
*/ |
||||||
|
private void initValues(GLSurfaceView mGlSurfaceView) { |
||||||
|
mWidth = mGlSurfaceView.getWidth(); |
||||||
|
mHeight = mGlSurfaceView.getHeight(); |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
initValues(mGlSurfaceView); |
||||||
|
|
||||||
|
String stepsizeXString = "stepsizeX = " + 1.0f / mWidth + ";\n"; |
||||||
|
String stepsizeYString = "stepsizeY = " + 1.0f / mHeight + ";\n"; |
||||||
|
String scaleString = "scale = " + scale + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " float scale;\n" |
||||||
|
+ " float stepsizeX;\n" |
||||||
|
+ " float stepsizeY;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ stepsizeXString |
||||||
|
+ stepsizeYString |
||||||
|
+ scaleString |
||||||
|
+ " vec3 nbr_color = vec3(0.0, 0.0, 0.0);\n" |
||||||
|
+ " vec2 coord;\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " coord.x = vTextureCoord.x - 0.5 * stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y - stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " coord.x = vTextureCoord.x - stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y + 0.5 * stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " coord.x = vTextureCoord.x + stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y - 0.5 * stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " coord.x = vTextureCoord.x + stepsizeX;\n" |
||||||
|
+ " coord.y = vTextureCoord.y + 0.5 * stepsizeY;\n" |
||||||
|
+ " nbr_color += texture2D(sTexture, coord).rgb - color.rgb;\n" |
||||||
|
+ " gl_FragColor = vec4(color.rgb - 2.0 * scale * nbr_color, color.a);\n" |
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
} |
@ -0,0 +1,55 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
/** |
||||||
|
* Adjusts color temperature of the preview. |
||||||
|
*/ |
||||||
|
public class TemperatureEffect implements ShaderInterface { |
||||||
|
private float scale = 0f; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param scale Float, between 0 and 1, with 0 indicating cool, and 1 |
||||||
|
* indicating warm. A value of of 0.5 indicates no change. |
||||||
|
*/ |
||||||
|
public TemperatureEffect(float scale) { |
||||||
|
if (scale < 0.0f) |
||||||
|
scale = 0.0f; |
||||||
|
if (scale > 1.0f) |
||||||
|
scale = 1.0f; |
||||||
|
this.scale = scale; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
|
||||||
|
String scaleString = "scale = " + (2.0f * scale - 1.0f) + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " float scale;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main() {\n" // Parameters that were created above
|
||||||
|
+ scaleString |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " vec3 new_color = color.rgb;\n" |
||||||
|
+ " new_color.r = color.r + color.r * ( 1.0 - color.r) * scale;\n" |
||||||
|
+ " new_color.b = color.b - color.b * ( 1.0 - color.b) * scale;\n" |
||||||
|
+ " if (scale > 0.0) { \n" |
||||||
|
+ " new_color.g = color.g + color.g * ( 1.0 - color.g) * scale * 0.25;\n" |
||||||
|
+ " }\n" |
||||||
|
+ " float max_value = max(new_color.r, max(new_color.g, new_color.b));\n" |
||||||
|
+ " if (max_value > 1.0) { \n" |
||||||
|
+ " new_color /= max_value;\n" + " } \n" |
||||||
|
+ " gl_FragColor = vec4(new_color, color.a);\n" + "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,63 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.graphics.Color; |
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
|
||||||
|
/** |
||||||
|
* Tints the preview with specified color.. |
||||||
|
*/ |
||||||
|
public class TintEffect implements ShaderInterface { |
||||||
|
private int mTint = 0xFF0000FF; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param color Integer, representing an ARGB color with 8 bits per channel. |
||||||
|
* May be created using Color class. |
||||||
|
*/ |
||||||
|
public TintEffect(int color) { |
||||||
|
this.mTint = color; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
float color_ratio[] = {0.21f, 0.71f, 0.07f}; |
||||||
|
String color_ratioString[] = new String[3]; |
||||||
|
color_ratioString[0] = "color_ratio[0] = " + color_ratio[0] + ";\n"; |
||||||
|
color_ratioString[1] = "color_ratio[1] = " + color_ratio[1] + ";\n"; |
||||||
|
color_ratioString[2] = "color_ratio[2] = " + color_ratio[2] + ";\n"; |
||||||
|
|
||||||
|
float tint_color[] = {Color.red(mTint) / 255f, |
||||||
|
Color.green(mTint) / 255f, Color.blue(mTint) / 255f}; |
||||||
|
|
||||||
|
String tintString[] = new String[3]; |
||||||
|
tintString[0] = "tint[0] = " + tint_color[0] + ";\n"; |
||||||
|
tintString[1] = "tint[1] = " + tint_color[1] + ";\n"; |
||||||
|
tintString[2] = "tint[2] = " + tint_color[2] + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " vec3 tint;\n" |
||||||
|
+ " vec3 color_ratio;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ color_ratioString[0] |
||||||
|
+ color_ratioString[1] |
||||||
|
+ color_ratioString[2] |
||||||
|
+ tintString[0] |
||||||
|
+ tintString[1] |
||||||
|
+ tintString[2] |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " float avg_color = dot(color_ratio, color.rgb);\n" |
||||||
|
+ " vec3 new_color = min(0.8 * avg_color + 0.2 * tint, 1.0);\n" |
||||||
|
+ " gl_FragColor = vec4(new_color.rgb, color.a);\n" + "}\n"; |
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
@ -0,0 +1,95 @@ |
|||||||
|
package com.otaliastudios.cameraview.shadereffects.effects; |
||||||
|
|
||||||
|
import android.opengl.GLSurfaceView; |
||||||
|
|
||||||
|
import com.otaliastudios.cameraview.shadereffects.ShaderInterface; |
||||||
|
|
||||||
|
|
||||||
|
/** |
||||||
|
* Applies lomo-camera style effect to your preview. |
||||||
|
*/ |
||||||
|
public class VignetteEffect implements ShaderInterface { |
||||||
|
private int mWidth = 0; |
||||||
|
private int mHeight = 0; |
||||||
|
private float mScale = 0f; |
||||||
|
private final float mShade = 0.85f; |
||||||
|
|
||||||
|
/** |
||||||
|
* Initialize Effect |
||||||
|
* |
||||||
|
* @param scale Float, between 0 and 1. 0 means no change. |
||||||
|
*/ |
||||||
|
public VignetteEffect(float scale) { |
||||||
|
if (scale < 0.0f) |
||||||
|
scale = 0.0f; |
||||||
|
if (scale > 1.0f) |
||||||
|
scale = 1.0f; |
||||||
|
this.mScale = scale; |
||||||
|
|
||||||
|
} |
||||||
|
|
||||||
|
/** |
||||||
|
* Init all values that will be used by this shader. |
||||||
|
* |
||||||
|
* @param mGlSurfaceView which is responsible for displaying your preview |
||||||
|
*/ |
||||||
|
private void initValues(GLSurfaceView mGlSurfaceView) { |
||||||
|
mWidth = mGlSurfaceView.getWidth(); |
||||||
|
mHeight = mGlSurfaceView.getHeight(); |
||||||
|
} |
||||||
|
|
||||||
|
@Override |
||||||
|
public String getShader(GLSurfaceView mGlSurfaceView) { |
||||||
|
initValues(mGlSurfaceView); |
||||||
|
float scale[] = new float[2]; |
||||||
|
if (mWidth > mHeight) { |
||||||
|
scale[0] = 1f; |
||||||
|
scale[1] = ((float) mHeight) / mWidth; |
||||||
|
} else { |
||||||
|
scale[0] = ((float) mWidth) / mHeight; |
||||||
|
scale[1] = 1f; |
||||||
|
} |
||||||
|
float max_dist = ((float) Math.sqrt(scale[0] * scale[0] + scale[1] |
||||||
|
* scale[1])) * 0.5f; |
||||||
|
|
||||||
|
String scaleString[] = new String[2]; |
||||||
|
|
||||||
|
scaleString[0] = "scale[0] = " + scale[0] + ";\n"; |
||||||
|
scaleString[1] = "scale[1] = " + scale[1] + ";\n"; |
||||||
|
String inv_max_distString = "inv_max_dist = " + 1.0f / max_dist + ";\n"; |
||||||
|
String shadeString = "shade = " + mShade + ";\n"; |
||||||
|
|
||||||
|
// The 'range' is between 1.3 to 0.6. When scale is zero then range is
|
||||||
|
// 1.3
|
||||||
|
// which means no vignette at all because the luminousity difference is
|
||||||
|
// less than 1/256 and will cause nothing.
|
||||||
|
String rangeString = "range = " |
||||||
|
+ (1.30f - (float) Math.sqrt(mScale) * 0.7f) + ";\n"; |
||||||
|
|
||||||
|
String shader = "#extension GL_OES_EGL_image_external : require\n" |
||||||
|
+ "precision mediump float;\n" |
||||||
|
+ "uniform samplerExternalOES sTexture;\n" |
||||||
|
+ " float range;\n" |
||||||
|
+ " float inv_max_dist;\n" |
||||||
|
+ " float shade;\n" |
||||||
|
+ " vec2 scale;\n" |
||||||
|
+ "varying vec2 vTextureCoord;\n" |
||||||
|
+ "void main() {\n" |
||||||
|
// Parameters that were created above
|
||||||
|
+ scaleString[0] |
||||||
|
+ scaleString[1] |
||||||
|
+ inv_max_distString |
||||||
|
+ shadeString |
||||||
|
+ rangeString |
||||||
|
+ " const float slope = 20.0;\n" |
||||||
|
+ " vec2 coord = vTextureCoord - vec2(0.5, 0.5);\n" |
||||||
|
+ " float dist = length(coord * scale);\n" |
||||||
|
+ " float lumen = shade / (1.0 + exp((dist * inv_max_dist - range) * slope)) + (1.0 - shade);\n" |
||||||
|
+ " vec4 color = texture2D(sTexture, vTextureCoord);\n" |
||||||
|
+ " gl_FragColor = vec4(color.rgb * lumen, color.a);\n" |
||||||
|
+ "}\n"; |
||||||
|
|
||||||
|
return shader; |
||||||
|
|
||||||
|
} |
||||||
|
} |
Loading…
Reference in new issue