Sascha Haeberling | 5116354 | 2014-08-14 19:27:34 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2014 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 com.android.camera.util; |
| 18 | |
| 19 | import android.hardware.camera2.CameraMetadata; |
| 20 | import android.hardware.camera2.CaptureRequest; |
| 21 | import android.hardware.camera2.CaptureResult; |
| 22 | import android.hardware.camera2.params.ColorSpaceTransform; |
| 23 | import android.hardware.camera2.params.RggbChannelVector; |
| 24 | import android.hardware.camera2.params.TonemapCurve; |
| 25 | import android.util.Rational; |
| 26 | |
| 27 | import com.android.camera.debug.Log; |
| 28 | import com.android.camera.debug.Log.Tag; |
| 29 | |
| 30 | import java.io.BufferedWriter; |
| 31 | import java.io.File; |
| 32 | import java.io.FileWriter; |
| 33 | import java.io.IOException; |
| 34 | import java.io.StringWriter; |
| 35 | import java.io.Writer; |
| 36 | import java.lang.reflect.Array; |
| 37 | import java.util.Arrays; |
| 38 | import java.util.List; |
| 39 | |
| 40 | /** |
| 41 | * Can be used for debugging to output details about Camera2 capture request and |
| 42 | * responses. |
| 43 | */ |
| 44 | public class CaptureDataSerializer { |
| 45 | private static interface Writeable { |
| 46 | public void write(Writer writer) throws IOException; |
| 47 | } |
| 48 | |
| 49 | private static final Tag TAG = new Tag("CaptureDataSerializer"); |
| 50 | |
| 51 | /** |
| 52 | * Generate a human-readable string of the given capture request and return |
| 53 | * it. |
| 54 | */ |
| 55 | public static String toString(String title, CaptureRequest metadata) { |
| 56 | StringWriter writer = new StringWriter(); |
| 57 | dumpMetadata(title, metadata, writer); |
| 58 | return writer.toString(); |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * Generate a human-readable string of the given capture request and write |
| 63 | * it to the given file. |
| 64 | */ |
| 65 | public static void toFile(String title, CameraMetadata<?> metadata, File file) { |
| 66 | try { |
| 67 | // Will append if the file already exists. |
| 68 | FileWriter writer = new FileWriter(file, true); |
| 69 | if (metadata instanceof CaptureRequest) { |
| 70 | dumpMetadata(title, (CaptureRequest) metadata, writer); |
| 71 | } else if (metadata instanceof CaptureResult) { |
| 72 | dumpMetadata(title, (CaptureResult) metadata, writer); |
| 73 | } else { |
| 74 | writer.close(); |
| 75 | throw new IllegalArgumentException("Cannot generate debug data from type " |
| 76 | + metadata.getClass().getName()); |
| 77 | } |
| 78 | writer.close(); |
| 79 | } catch (IOException ex) { |
| 80 | Log.e(TAG, "Could not write capture data to file.", ex); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Writes the data about the marker and requests to the given folder for |
| 86 | * offline debugging. |
| 87 | */ |
| 88 | private static void dumpMetadata(final String title, final CaptureRequest metadata, |
| 89 | Writer writer) { |
| 90 | Writeable writeable = new Writeable() { |
| 91 | @Override |
| 92 | public void write(Writer writer) throws IOException { |
| 93 | List<CaptureRequest.Key<?>> keys = metadata.getKeys(); |
| 94 | writer.write(title + '\n'); |
| 95 | |
| 96 | // TODO: move to CameraMetadata#toString ? |
| 97 | for (CaptureRequest.Key<?> key : keys) { |
| 98 | writer.write(String.format(" %s\n", key.getName())); |
| 99 | writer.write(String.format(" %s\n", |
| 100 | metadataValueToString(metadata.get(key)))); |
| 101 | } |
| 102 | } |
| 103 | }; |
| 104 | dumpMetadata(writeable, new BufferedWriter(writer)); |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * Writes the data about the marker and requests to the given folder for |
| 109 | * offline debugging. |
| 110 | */ |
| 111 | private static void dumpMetadata(final String title, final CaptureResult metadata, |
| 112 | Writer writer) { |
| 113 | Writeable writeable = new Writeable() { |
| 114 | @Override |
| 115 | public void write(Writer writer) throws IOException { |
| 116 | List<CaptureResult.Key<?>> keys = metadata.getKeys(); |
| 117 | writer.write(String.format(title)); |
| 118 | |
| 119 | // TODO: move to CameraMetadata#toString ? |
| 120 | for (CaptureResult.Key<?> key : keys) { |
| 121 | writer.write(String.format(" %s\n", key.getName())); |
| 122 | writer.write(String.format(" %s\n", |
| 123 | metadataValueToString(metadata.get(key)))); |
| 124 | } |
| 125 | } |
| 126 | }; |
| 127 | dumpMetadata(writeable, new BufferedWriter(writer)); |
| 128 | } |
| 129 | |
| 130 | private static String metadataValueToString(Object object) { |
| 131 | if (object == null) { |
| 132 | return "<null>"; |
| 133 | } |
| 134 | if (object.getClass().isArray()) { |
| 135 | StringBuilder builder = new StringBuilder(); |
| 136 | builder.append("["); |
| 137 | |
| 138 | int length = Array.getLength(object); |
| 139 | for (int i = 0; i < length; ++i) { |
| 140 | Object item = Array.get(object, i); |
| 141 | builder.append(metadataValueToString(item)); |
| 142 | |
| 143 | if (i != length - 1) { |
| 144 | builder.append(", "); |
| 145 | } |
| 146 | } |
| 147 | builder.append(']'); |
| 148 | |
| 149 | return builder.toString(); |
| 150 | } else { |
| 151 | // These classes don't have a toString() method yet |
| 152 | // See: http://b/16899576 |
| 153 | if (object instanceof RggbChannelVector) { |
| 154 | return toString((RggbChannelVector) object); |
| 155 | } else if (object instanceof ColorSpaceTransform) { |
| 156 | return toString((ColorSpaceTransform) object); |
| 157 | } else if (object instanceof TonemapCurve) { |
| 158 | return toString((TonemapCurve) object); |
| 159 | } |
| 160 | return object.toString(); |
| 161 | } |
| 162 | } |
| 163 | |
| 164 | private static void dumpMetadata(Writeable metadata, Writer writer) { |
| 165 | /** |
| 166 | * Save metadata to file, appending if another metadata is already in |
| 167 | * that file. |
| 168 | */ |
| 169 | try { |
| 170 | metadata.write(writer); |
| 171 | } catch (IOException e) { |
| 172 | Log.e(TAG, "dumpMetadata - Failed to dump metadata", e); |
| 173 | } finally { |
| 174 | try { |
| 175 | if (writer != null) { |
| 176 | writer.close(); |
| 177 | } |
| 178 | } catch (IOException e) { |
| 179 | Log.e(TAG, "dumpMetadata - Failed to close writer.", e); |
| 180 | } |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | private static String toString(RggbChannelVector vector) { |
| 185 | StringBuilder str = new StringBuilder(); |
| 186 | str.append("RggbChannelVector:"); |
| 187 | str.append(" R:"); |
| 188 | str.append(vector.getRed()); |
| 189 | str.append(" G(even):"); |
| 190 | str.append(vector.getGreenEven()); |
| 191 | str.append(" G(odd):"); |
| 192 | str.append(vector.getGreenOdd()); |
| 193 | str.append(" B:"); |
| 194 | str.append(vector.getBlue()); |
| 195 | |
| 196 | return str.toString(); |
| 197 | } |
| 198 | |
| 199 | private static String toString(ColorSpaceTransform transform) { |
| 200 | StringBuilder str = new StringBuilder(); |
| 201 | Rational[] rationals = new Rational[9]; |
| 202 | transform.copyElements(rationals, 0); |
| 203 | str.append("ColorSpaceTransform: "); |
| 204 | str.append(Arrays.toString(rationals)); |
| 205 | return str.toString(); |
| 206 | } |
| 207 | |
| 208 | private static String toString(TonemapCurve curve) { |
| 209 | StringBuilder str = new StringBuilder(); |
| 210 | str.append("TonemapCurve:"); |
| 211 | |
| 212 | float[] reds = new float[curve.getPointCount(TonemapCurve.CHANNEL_RED) |
| 213 | * TonemapCurve.POINT_SIZE]; |
| 214 | curve.copyColorCurve(TonemapCurve.CHANNEL_RED, reds, 0); |
| 215 | float[] greens = new float[curve.getPointCount(TonemapCurve.CHANNEL_GREEN) |
| 216 | * TonemapCurve.POINT_SIZE]; |
| 217 | curve.copyColorCurve(TonemapCurve.CHANNEL_GREEN, greens, 0); |
| 218 | float[] blues = new float[curve.getPointCount(TonemapCurve.CHANNEL_BLUE) |
| 219 | * TonemapCurve.POINT_SIZE]; |
| 220 | curve.copyColorCurve(TonemapCurve.CHANNEL_BLUE, blues, 0); |
| 221 | |
| 222 | str.append("\n\nReds: "); |
| 223 | str.append(Arrays.toString(reds)); |
| 224 | str.append("\n\nGreens: "); |
| 225 | str.append(Arrays.toString(greens)); |
| 226 | str.append("\n\nBlues: "); |
| 227 | str.append(Arrays.toString(blues)); |
| 228 | |
| 229 | return str.toString(); |
| 230 | } |
| 231 | } |