Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.renderscript; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.content.res.Resources; |
| 21 | import android.util.Log; |
| 22 | |
| 23 | /** |
| 24 | * Intrinsic Histogram filter. |
| 25 | * |
| 26 | * |
| 27 | **/ |
| 28 | public final class ScriptIntrinsicHistogram extends ScriptIntrinsic { |
| 29 | private Allocation mOut; |
| 30 | |
| 31 | private ScriptIntrinsicHistogram(int id, RenderScript rs) { |
| 32 | super(id, rs); |
| 33 | } |
| 34 | |
| 35 | /** |
| 36 | * Create an intrinsic for calculating the histogram of an uchar |
| 37 | * or uchar4 image. |
| 38 | * |
Jason Sams | 9274384 | 2013-06-18 18:52:42 -0700 | [diff] [blame] | 39 | * Supported elements types are |
| 40 | * {@link Element#U8_4}, {@link Element#U8_3}, |
| 41 | * {@link Element#U8_2}, {@link Element#U8} |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 42 | * |
| 43 | * @param rs The RenderScript context |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 44 | * @param e Element type for inputs |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 45 | * |
| 46 | * @return ScriptIntrinsicHistogram |
| 47 | */ |
| 48 | public static ScriptIntrinsicHistogram create(RenderScript rs, Element e) { |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 49 | if ((!e.isCompatible(Element.U8_4(rs))) && |
| 50 | (!e.isCompatible(Element.U8_3(rs))) && |
| 51 | (!e.isCompatible(Element.U8_2(rs))) && |
| 52 | (!e.isCompatible(Element.U8(rs)))) { |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 53 | throw new RSIllegalArgumentException("Unsuported element type."); |
| 54 | } |
| 55 | int id = rs.nScriptIntrinsicCreate(9, e.getID(rs)); |
| 56 | ScriptIntrinsicHistogram sib = new ScriptIntrinsicHistogram(id, rs); |
| 57 | return sib; |
| 58 | } |
| 59 | |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 60 | /** |
| 61 | * Process an input buffer and place the histogram into the |
| 62 | * output allocation. The output allocation may be a narrower |
| 63 | * vector size than the input. In this case the vector size of |
| 64 | * the output is used to determine how many of the input |
| 65 | * channels are used in the computation. This is useful if you |
| 66 | * have an RGBA input buffer but only want the histogram for |
| 67 | * RGB. |
| 68 | * |
| 69 | * 1D and 2D input allocations are supported. |
| 70 | * |
| 71 | * @param ain The input image |
| 72 | */ |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 73 | public void forEach(Allocation ain) { |
Jason Sams | 8ace2ac | 2013-06-18 17:34:34 -0700 | [diff] [blame] | 74 | if (ain.getType().getElement().getVectorSize() < |
| 75 | mOut.getType().getElement().getVectorSize()) { |
| 76 | |
| 77 | throw new RSIllegalArgumentException( |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 78 | "Input vector size must be >= output vector size."); |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 79 | } |
| 80 | if (ain.getType().getElement().isCompatible(Element.U8(mRS)) && |
| 81 | ain.getType().getElement().isCompatible(Element.U8_4(mRS))) { |
| 82 | throw new RSIllegalArgumentException("Output type must be U32 or I32."); |
| 83 | } |
| 84 | |
| 85 | forEach(0, ain, null, null); |
| 86 | } |
| 87 | |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 88 | /** |
| 89 | * Set the coefficients used for the RGBA to Luminocity |
| 90 | * calculation. The default is {0.299f, 0.587f, 0.114f, 0.f}. |
| 91 | * |
| 92 | * Coefficients must be >= 0 and sum to 1.0 or less. |
| 93 | * |
| 94 | * @param r Red coefficient |
| 95 | * @param g Green coefficient |
| 96 | * @param b Blue coefficient |
| 97 | * @param a Alpha coefficient |
| 98 | */ |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 99 | public void setDotCoefficients(float r, float g, float b, float a) { |
| 100 | if ((r < 0.f) || (g < 0.f) || (b < 0.f) || (a < 0.f)) { |
| 101 | throw new RSIllegalArgumentException("Coefficient may not be negative."); |
| 102 | } |
| 103 | if ((r + g + b + a) > 1.f) { |
| 104 | throw new RSIllegalArgumentException("Sum of coefficients must be 1.0 or less."); |
| 105 | } |
| 106 | |
| 107 | FieldPacker fp = new FieldPacker(16); |
| 108 | fp.addF32(r); |
| 109 | fp.addF32(g); |
| 110 | fp.addF32(b); |
| 111 | fp.addF32(a); |
| 112 | setVar(0, fp); |
| 113 | } |
| 114 | |
| 115 | /** |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 116 | * Set the output of the histogram. 32 bit integer types are |
| 117 | * supported. |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 118 | * |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 119 | * @param aout The output allocation |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 120 | */ |
| 121 | public void setOutput(Allocation aout) { |
| 122 | mOut = aout; |
| 123 | if (mOut.getType().getElement() != Element.U32(mRS) && |
Jason Sams | 8ace2ac | 2013-06-18 17:34:34 -0700 | [diff] [blame] | 124 | mOut.getType().getElement() != Element.U32_2(mRS) && |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 125 | mOut.getType().getElement() != Element.U32_3(mRS) && |
| 126 | mOut.getType().getElement() != Element.U32_4(mRS) && |
| 127 | mOut.getType().getElement() != Element.I32(mRS) && |
Jason Sams | 8ace2ac | 2013-06-18 17:34:34 -0700 | [diff] [blame] | 128 | mOut.getType().getElement() != Element.I32_2(mRS) && |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 129 | mOut.getType().getElement() != Element.I32_3(mRS) && |
| 130 | mOut.getType().getElement() != Element.I32_4(mRS)) { |
| 131 | |
| 132 | throw new RSIllegalArgumentException("Output type must be U32 or I32."); |
| 133 | } |
| 134 | if ((mOut.getType().getX() != 256) || |
| 135 | (mOut.getType().getY() != 0) || |
| 136 | mOut.getType().hasMipmaps() || |
| 137 | (mOut.getType().getYuv() != 0)) { |
| 138 | |
| 139 | throw new RSIllegalArgumentException("Output must be 1D, 256 elements."); |
| 140 | } |
| 141 | setVar(1, aout); |
| 142 | } |
| 143 | |
Jason Sams | 1a3edb0 | 2013-06-18 18:23:37 -0700 | [diff] [blame] | 144 | /** |
| 145 | * Process an input buffer and place the histogram into the |
| 146 | * output allocation. The dot product of the input channel and |
| 147 | * the coefficients from 'setDotCoefficients' are used to |
| 148 | * calculate the output values. |
| 149 | * |
| 150 | * 1D and 2D input allocations are supported. |
| 151 | * |
| 152 | * @param ain The input image |
| 153 | */ |
Jason Sams | a49e89d | 2013-08-29 17:00:37 -0700 | [diff] [blame] | 154 | public void forEach_Dot(Allocation ain) { |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 155 | if (mOut.getType().getElement().getVectorSize() != 1) { |
| 156 | throw new RSIllegalArgumentException("Output vector size must be one."); |
| 157 | } |
| 158 | if (ain.getType().getElement().isCompatible(Element.U8(mRS)) && |
| 159 | ain.getType().getElement().isCompatible(Element.U8_4(mRS))) { |
| 160 | throw new RSIllegalArgumentException("Output type must be U32 or I32."); |
| 161 | } |
| 162 | |
| 163 | forEach(1, ain, null, null); |
| 164 | } |
| 165 | |
| 166 | |
| 167 | |
| 168 | /** |
| 169 | * Get a KernelID for this intrinsic kernel. |
| 170 | * |
| 171 | * @return Script.KernelID The KernelID object. |
| 172 | */ |
Jason Sams | a49e89d | 2013-08-29 17:00:37 -0700 | [diff] [blame] | 173 | public Script.KernelID getKernelID_Separate() { |
Jason Sams | 01e9f90 | 2013-06-18 11:53:03 -0700 | [diff] [blame] | 174 | return createKernelID(0, 3, null, null); |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * Get a FieldID for the input field of this intrinsic. |
| 179 | * |
| 180 | * @return Script.FieldID The FieldID object. |
| 181 | */ |
| 182 | public Script.FieldID getFieldID_Input() { |
| 183 | return createFieldID(1, null); |
| 184 | } |
| 185 | } |
| 186 | |