├── .gitignore ├── .idea ├── .name ├── compiler.xml ├── copyright │ └── profiles_settings.xml ├── encodings.xml ├── gradle.xml ├── libraries │ ├── MPAndroidChart_v2_2_3.xml │ ├── appcompat_v7_23_1_1.xml │ ├── butterknife_7_0_1.xml │ ├── okio_1_5_0.xml │ ├── support_annotations_23_1_1.xml │ ├── support_v4_23_1_1.xml │ ├── timber_3_1_0.xml │ └── wire_runtime_2_1_1.xml ├── misc.xml ├── modules.xml ├── runConfigurations.xml └── workspace.xml ├── LICENSE ├── README.md ├── android-streaming-protobuf-example.iml ├── app ├── .gitignore ├── app.iml ├── build.gradle ├── proguard-rules.pro └── src │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── sureshjoshi │ │ │ └── android │ │ │ ├── pb │ │ │ └── Sample.java │ │ │ └── streamingprotobufexample │ │ │ ├── MainActivity.java │ │ │ ├── MainApplication.java │ │ │ └── utils │ │ │ ├── CobsUtils.java │ │ │ └── WireUtils.java │ └── res │ │ ├── layout │ │ └── activity_main.xml │ │ ├── mipmap-hdpi │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ └── ic_launcher.png │ │ ├── mipmap-xxxhdpi │ │ └── ic_launcher.png │ │ └── values │ │ ├── colors.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── proto │ ├── Sample.include │ ├── generate.sh │ ├── proto-repo │ └── Sample.proto │ └── wire-compiler-2.1.1-jar-with-dependencies.jar ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | # Built application files 2 | *.apk 3 | *.ap_ 4 | 5 | # Files for the Dalvik VM 6 | *.dex 7 | 8 | # Java class files 9 | *.class 10 | 11 | # Generated files 12 | bin/ 13 | gen/ 14 | 15 | # Gradle files 16 | .gradle/ 17 | build/ 18 | 19 | # Local configuration file (sdk path, etc) 20 | local.properties 21 | 22 | # Proguard folder generated by Eclipse 23 | proguard/ 24 | 25 | # Log Files 26 | *.log 27 | 28 | # Android Studio Navigation editor temp files 29 | .navigation/ 30 | 31 | # Android Studio captures folder 32 | captures/ 33 | -------------------------------------------------------------------------------- /.idea/.name: -------------------------------------------------------------------------------- 1 | Streaming Protobuf Example -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /.idea/copyright/profiles_settings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | -------------------------------------------------------------------------------- /.idea/encodings.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 24 | 25 | -------------------------------------------------------------------------------- /.idea/libraries/MPAndroidChart_v2_2_3.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/appcompat_v7_23_1_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | -------------------------------------------------------------------------------- /.idea/libraries/butterknife_7_0_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/okio_1_5_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/support_annotations_23_1_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/support_v4_23_1_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | -------------------------------------------------------------------------------- /.idea/libraries/timber_3_1_0.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/libraries/wire_runtime_2_1_1.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 22 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 49 | 50 | 51 | 52 | 53 | 1.8 54 | 55 | 60 | 61 | 62 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | The MIT License (MIT) 2 | 3 | Copyright (c) 2016 Suresh Joshi 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # android-streaming-protobuf-example 2 | 3 | An example of using Wire plus a small utility class I wrote to allow streaming Protocol Buffers to file (please refer to my blog posts here: http://www.sureshjoshi.com/development/streaming-protocol-buffers/ and here: http://www.sureshjoshi.com/development/streaming-protocol-buffers-with-cobs/) 4 | -------------------------------------------------------------------------------- /android-streaming-protobuf-example.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/app.iml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | 87 | 88 | 89 | 90 | 91 | 92 | 93 | 94 | 95 | 96 | 97 | 98 | 99 | 100 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 | 109 | 110 | 111 | 112 | 113 | 114 | 115 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | repositories { 3 | mavenCentral() 4 | } 5 | 6 | dependencies { 7 | classpath 'me.tatarka:gradle-retrolambda:3.2.4' 8 | } 9 | } 10 | 11 | repositories { 12 | mavenCentral() 13 | maven { url "https://jitpack.io" } 14 | } 15 | 16 | apply plugin: 'com.android.application' 17 | apply plugin: 'me.tatarka.retrolambda' 18 | 19 | // Manifest version information 20 | def versionMajor = 0 21 | def versionMinor = 1 22 | def versionPatch = 0 23 | 24 | android { 25 | compileSdkVersion 23 26 | buildToolsVersion "23.0.2" 27 | 28 | defaultConfig { 29 | applicationId "com.sureshjoshi.android.streamingprotobufexample" 30 | minSdkVersion 19 31 | targetSdkVersion 23 32 | versionCode versionMajor * 10000 + versionMinor * 100 + versionPatch 33 | versionName "${versionMajor}.${versionMinor}.${versionPatch}" 34 | } 35 | 36 | buildTypes { 37 | debug { 38 | applicationIdSuffix '.debug' 39 | resValue "string", "app_name", "Streaming Protobuf Example Debug" 40 | debuggable true 41 | } 42 | release { 43 | minifyEnabled false 44 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt' 45 | resValue "string", "app_name", "Streaming Protobuf Example" 46 | } 47 | } 48 | 49 | compileOptions { 50 | sourceCompatibility JavaVersion.VERSION_1_8 51 | targetCompatibility JavaVersion.VERSION_1_8 52 | } 53 | } 54 | 55 | dependencies { 56 | compile fileTree(dir: 'libs', include: ['*.jar']) 57 | compile 'com.android.support:appcompat-v7:23.1.1' 58 | 59 | compile 'com.squareup.wire:wire-runtime:2.1.1' 60 | 61 | compile 'com.jakewharton:butterknife:7.0.1' 62 | compile 'com.jakewharton.timber:timber:3.1.0' 63 | 64 | compile 'com.github.PhilJay:MPAndroidChart:v2.2.3' 65 | } 66 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /Users/sureshjoshi/Library/Android/sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | -------------------------------------------------------------------------------- /app/src/main/java/com/sureshjoshi/android/pb/Sample.java: -------------------------------------------------------------------------------- 1 | // Code generated by Wire protocol buffer compiler, do not edit. 2 | // Source file: Sample.proto at 7:1 3 | package com.sureshjoshi.android.pb; 4 | 5 | import com.squareup.wire.FieldEncoding; 6 | import com.squareup.wire.Message; 7 | import com.squareup.wire.ProtoAdapter; 8 | import com.squareup.wire.ProtoReader; 9 | import com.squareup.wire.ProtoWriter; 10 | import com.squareup.wire.WireField; 11 | import com.squareup.wire.internal.Internal; 12 | import java.io.IOException; 13 | import java.lang.Integer; 14 | import java.lang.Object; 15 | import java.lang.Override; 16 | import java.lang.String; 17 | import java.lang.StringBuilder; 18 | import okio.ByteString; 19 | 20 | public final class Sample extends Message { 21 | public static final ProtoAdapter ADAPTER = new ProtoAdapter_Sample(); 22 | 23 | private static final long serialVersionUID = 0L; 24 | 25 | public static final Integer DEFAULT_X = 0; 26 | 27 | public static final Integer DEFAULT_Y = 0; 28 | 29 | @WireField( 30 | tag = 1, 31 | adapter = "com.squareup.wire.ProtoAdapter#UINT32" 32 | ) 33 | public final Integer x; 34 | 35 | @WireField( 36 | tag = 2, 37 | adapter = "com.squareup.wire.ProtoAdapter#UINT32" 38 | ) 39 | public final Integer y; 40 | 41 | public Sample(Integer x, Integer y) { 42 | this(x, y, ByteString.EMPTY); 43 | } 44 | 45 | public Sample(Integer x, Integer y, ByteString unknownFields) { 46 | super(ADAPTER, unknownFields); 47 | this.x = x; 48 | this.y = y; 49 | } 50 | 51 | @Override 52 | public Builder newBuilder() { 53 | Builder builder = new Builder(); 54 | builder.x = x; 55 | builder.y = y; 56 | builder.addUnknownFields(unknownFields()); 57 | return builder; 58 | } 59 | 60 | @Override 61 | public boolean equals(Object other) { 62 | if (other == this) return true; 63 | if (!(other instanceof Sample)) return false; 64 | Sample o = (Sample) other; 65 | return Internal.equals(unknownFields(), o.unknownFields()) 66 | && Internal.equals(x, o.x) 67 | && Internal.equals(y, o.y); 68 | } 69 | 70 | @Override 71 | public int hashCode() { 72 | int result = super.hashCode; 73 | if (result == 0) { 74 | result = unknownFields().hashCode(); 75 | result = result * 37 + (x != null ? x.hashCode() : 0); 76 | result = result * 37 + (y != null ? y.hashCode() : 0); 77 | super.hashCode = result; 78 | } 79 | return result; 80 | } 81 | 82 | @Override 83 | public String toString() { 84 | StringBuilder builder = new StringBuilder(); 85 | if (x != null) builder.append(", x=").append(x); 86 | if (y != null) builder.append(", y=").append(y); 87 | return builder.replace(0, 2, "Sample{").append('}').toString(); 88 | } 89 | 90 | public static final class Builder extends Message.Builder { 91 | public Integer x; 92 | 93 | public Integer y; 94 | 95 | public Builder() { 96 | } 97 | 98 | public Builder x(Integer x) { 99 | this.x = x; 100 | return this; 101 | } 102 | 103 | public Builder y(Integer y) { 104 | this.y = y; 105 | return this; 106 | } 107 | 108 | @Override 109 | public Sample build() { 110 | return new Sample(x, y, buildUnknownFields()); 111 | } 112 | } 113 | 114 | private static final class ProtoAdapter_Sample extends ProtoAdapter { 115 | ProtoAdapter_Sample() { 116 | super(FieldEncoding.LENGTH_DELIMITED, Sample.class); 117 | } 118 | 119 | @Override 120 | public int encodedSize(Sample value) { 121 | return (value.x != null ? ProtoAdapter.UINT32.encodedSizeWithTag(1, value.x) : 0) 122 | + (value.y != null ? ProtoAdapter.UINT32.encodedSizeWithTag(2, value.y) : 0) 123 | + value.unknownFields().size(); 124 | } 125 | 126 | @Override 127 | public void encode(ProtoWriter writer, Sample value) throws IOException { 128 | if (value.x != null) ProtoAdapter.UINT32.encodeWithTag(writer, 1, value.x); 129 | if (value.y != null) ProtoAdapter.UINT32.encodeWithTag(writer, 2, value.y); 130 | writer.writeBytes(value.unknownFields()); 131 | } 132 | 133 | @Override 134 | public Sample decode(ProtoReader reader) throws IOException { 135 | Builder builder = new Builder(); 136 | long token = reader.beginMessage(); 137 | for (int tag; (tag = reader.nextTag()) != -1;) { 138 | switch (tag) { 139 | case 1: builder.x(ProtoAdapter.UINT32.decode(reader)); break; 140 | case 2: builder.y(ProtoAdapter.UINT32.decode(reader)); break; 141 | default: { 142 | FieldEncoding fieldEncoding = reader.peekFieldEncoding(); 143 | Object value = fieldEncoding.rawProtoAdapter().decode(reader); 144 | builder.addUnknownField(tag, fieldEncoding, value); 145 | } 146 | } 147 | } 148 | reader.endMessage(token); 149 | return builder.build(); 150 | } 151 | 152 | @Override 153 | public Sample redact(Sample value) { 154 | Builder builder = value.newBuilder(); 155 | builder.clearUnknownFields(); 156 | return builder.build(); 157 | } 158 | } 159 | } 160 | -------------------------------------------------------------------------------- /app/src/main/java/com/sureshjoshi/android/streamingprotobufexample/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.sureshjoshi.android.streamingprotobufexample; 2 | 3 | import android.app.Activity; 4 | import android.graphics.Color; 5 | import android.os.Bundle; 6 | 7 | import com.github.mikephil.charting.charts.LineChart; 8 | import com.github.mikephil.charting.data.Entry; 9 | import com.github.mikephil.charting.data.LineData; 10 | import com.github.mikephil.charting.data.LineDataSet; 11 | import com.github.mikephil.charting.interfaces.datasets.ILineDataSet; 12 | import com.squareup.wire.Message; 13 | import com.sureshjoshi.android.pb.Sample; 14 | import com.sureshjoshi.android.streamingprotobufexample.utils.WireUtils; 15 | 16 | import java.io.BufferedInputStream; 17 | import java.io.BufferedOutputStream; 18 | import java.io.IOException; 19 | import java.io.InputStream; 20 | import java.io.OutputStream; 21 | import java.util.ArrayList; 22 | import java.util.List; 23 | 24 | import butterknife.Bind; 25 | import butterknife.ButterKnife; 26 | import butterknife.OnClick; 27 | 28 | public class MainActivity extends Activity { 29 | 30 | int mRunningX = 0; 31 | static final String FILE_NAME = "samples.pbld"; 32 | static final String FILE_NAME_COBS = "samples.pbcobs1"; 33 | 34 | @Bind(R.id.chart) 35 | LineChart mChart; 36 | 37 | @OnClick(R.id.button_add_one) 38 | void addOneSample() { 39 | // Create one random entry 40 | try { 41 | Sample sample = new Sample.Builder() 42 | .x(++mRunningX) 43 | .y((int) (Math.random() * 1000)) 44 | .build(); 45 | 46 | OutputStream outputStream = new BufferedOutputStream(openFileOutput(FILE_NAME, MODE_APPEND)); 47 | WireUtils.writeDelimitedTo(outputStream, sample); 48 | outputStream.close(); 49 | 50 | OutputStream outputStreamCobs = new BufferedOutputStream(openFileOutput(FILE_NAME_COBS, MODE_APPEND)); 51 | WireUtils.writeCobsEncodedTo(outputStreamCobs, sample); 52 | outputStreamCobs.close(); 53 | } catch (IOException e) { 54 | e.printStackTrace(); 55 | } 56 | 57 | refreshChart(); 58 | } 59 | 60 | @OnClick(R.id.button_add_ten) 61 | void addTenSamples() { 62 | // Create 10 random entries 63 | List samples = new ArrayList<>(); 64 | for (int i = 0; i < 10; ++i) { 65 | samples.add(new Sample.Builder() 66 | .x(++mRunningX) 67 | .y((int) (Math.random() * 1000)) 68 | .build()); 69 | } 70 | 71 | try { 72 | OutputStream outputStream = new BufferedOutputStream(openFileOutput(FILE_NAME, MODE_APPEND)); 73 | WireUtils.writeDelimitedTo(outputStream, samples); 74 | outputStream.close(); 75 | 76 | // OutputStream outputStreamCobs = new BufferedOutputStream(openFileOutput(FILE_NAME_COBS, MODE_APPEND)); 77 | // WireUtils.writeCobsEncodedTo(outputStreamCobs, samples); 78 | // outputStreamCobs.close(); 79 | } catch (IOException e) { 80 | e.printStackTrace(); 81 | } 82 | 83 | refreshChart(); 84 | } 85 | 86 | 87 | @OnClick(R.id.button_refresh) 88 | void refreshChart() { 89 | // Read in from the file, clear and remake chart 90 | List samples = new ArrayList<>(); 91 | try { 92 | InputStream inputStream = new BufferedInputStream(openFileInput(FILE_NAME)); 93 | samples = WireUtils.readDelimitedFrom(inputStream, Sample.ADAPTER); 94 | inputStream.close(); 95 | 96 | // InputStream inputStreamCobs = new BufferedInputStream(openFileInput(FILE_NAME_COBS)); 97 | // samples = WireUtils.readCobsEncodedFrom(inputStreamCobs, Sample.ADAPTER); 98 | // inputStreamCobs.close(); 99 | } catch (IOException e) { 100 | e.printStackTrace(); 101 | } 102 | 103 | // Everything below here is specifically for MPAndroid 104 | 105 | // Setup samples to work with MPAndroid charting 106 | ArrayList xVals = new ArrayList<>(); 107 | ArrayList yVals = new ArrayList<>(); 108 | for (Sample sample : samples) { 109 | xVals.add((sample.x) + ""); 110 | yVals.add(new Entry(sample.y, sample.x)); 111 | } 112 | 113 | // Create a dataset and give it a type 114 | LineDataSet dataSet = new LineDataSet(yVals, "DataSet 1"); 115 | dataSet.setLineWidth(1f); 116 | dataSet.setDrawCircles(false); 117 | dataSet.setValueTextSize(0f); 118 | dataSet.setColor(Color.RED); 119 | 120 | ArrayList dataSets = new ArrayList<>(); 121 | dataSets.add(dataSet); // add the datasets 122 | 123 | // Create a data object with the datasets 124 | LineData data = new LineData(xVals, dataSets); 125 | 126 | // Set data 127 | mChart.setData(data); 128 | mChart.invalidate(); 129 | } 130 | 131 | @Override 132 | protected void onCreate(Bundle savedInstanceState) { 133 | super.onCreate(savedInstanceState); 134 | setContentView(R.layout.activity_main); 135 | ButterKnife.bind(this); 136 | 137 | // Delete the file, if any, between onCreate calls. 138 | deleteFile(FILE_NAME); 139 | deleteFile(FILE_NAME_COBS); 140 | } 141 | } -------------------------------------------------------------------------------- /app/src/main/java/com/sureshjoshi/android/streamingprotobufexample/MainApplication.java: -------------------------------------------------------------------------------- 1 | package com.sureshjoshi.android.streamingprotobufexample; 2 | 3 | import android.app.Application; 4 | 5 | import timber.log.Timber; 6 | 7 | public class MainApplication extends Application { 8 | 9 | @Override 10 | public void onCreate() { 11 | super.onCreate(); 12 | Timber.plant(new Timber.DebugTree()); 13 | } 14 | } 15 | -------------------------------------------------------------------------------- /app/src/main/java/com/sureshjoshi/android/streamingprotobufexample/utils/CobsUtils.java: -------------------------------------------------------------------------------- 1 | package com.sureshjoshi.android.streamingprotobufexample.utils; 2 | 3 | public class CobsUtils { 4 | 5 | // Expected to be the entire packet to encode 6 | public static byte[] encode(byte[] packet) { 7 | if (packet == null 8 | || packet.length == 0) { 9 | return new byte[]{}; 10 | } 11 | 12 | byte[] output = new byte[packet.length + 2]; 13 | byte blockStartValue = 1; 14 | int lastZeroIndex = 0; 15 | int srcIndex = 0; 16 | int destIndex = 1; 17 | 18 | while (srcIndex < packet.length) { 19 | if (packet[srcIndex] == 0) { 20 | output[lastZeroIndex] = blockStartValue; 21 | lastZeroIndex = destIndex++; 22 | blockStartValue = 1; 23 | } else { 24 | output[destIndex++] = packet[srcIndex]; 25 | if (++blockStartValue == 255) { 26 | output[lastZeroIndex] = blockStartValue; 27 | lastZeroIndex = destIndex++; 28 | blockStartValue = 1; 29 | } 30 | } 31 | 32 | ++srcIndex; 33 | } 34 | 35 | output[lastZeroIndex] = blockStartValue; 36 | return output; 37 | } 38 | 39 | // Expected to be the entire packet to decode with trailing 0 40 | public static byte[] decode(byte[] packet) { 41 | if (packet == null 42 | || packet.length == 0 43 | || packet[packet.length - 1] != 0) { 44 | return new byte[]{}; 45 | } 46 | 47 | byte[] output = new byte[packet.length - 2]; 48 | int srcPacketLength = packet.length - 1; 49 | int srcIndex = 0; 50 | int destIndex = 0; 51 | 52 | while (srcIndex < srcPacketLength) { 53 | int code = packet[srcIndex++] & 0xff; 54 | for (int i = 1; srcIndex < srcPacketLength && i < code; ++i) { 55 | output[destIndex++] = packet[srcIndex++]; 56 | } 57 | if (code != 255 && srcIndex != srcPacketLength) { 58 | output[destIndex++] = 0; 59 | } 60 | } 61 | 62 | return output; 63 | } 64 | 65 | } 66 | -------------------------------------------------------------------------------- /app/src/main/java/com/sureshjoshi/android/streamingprotobufexample/utils/WireUtils.java: -------------------------------------------------------------------------------- 1 | package com.sureshjoshi.android.streamingprotobufexample.utils; 2 | 3 | import com.squareup.wire.Message; 4 | import com.squareup.wire.ProtoAdapter; 5 | 6 | import java.io.IOException; 7 | import java.io.InputStream; 8 | import java.io.OutputStream; 9 | import java.util.ArrayList; 10 | import java.util.List; 11 | 12 | import okio.BufferedSink; 13 | import okio.BufferedSource; 14 | import okio.Okio; 15 | 16 | public class WireUtils { 17 | 18 | public static void writeDelimitedTo(OutputStream outputStream, List messages) throws IOException { 19 | for (Message message : messages) { 20 | writeDelimitedTo(outputStream, message); 21 | } 22 | } 23 | 24 | public static void writeDelimitedTo(OutputStream outputStream, Message message) throws IOException { 25 | int size = message.adapter().encodedSize(message); 26 | BufferedSink sink = Okio.buffer(Okio.sink(outputStream)); 27 | sink.writeIntLe(size); 28 | message.encode(sink); 29 | sink.emit(); 30 | } 31 | 32 | public static List readDelimitedFrom(InputStream inputStream, ProtoAdapter adapter) throws IOException { 33 | List messages = new ArrayList<>(); 34 | BufferedSource source = Okio.buffer(Okio.source(inputStream)); 35 | while (!source.exhausted()) { 36 | int size = source.readIntLe(); 37 | byte[] bytes = source.readByteArray(size); 38 | messages.add(adapter.decode(bytes)); 39 | } 40 | return messages; 41 | } 42 | 43 | public static void writeCobsEncodedTo(OutputStream outputStream, List messages) throws IOException { 44 | for (Message message : messages) { 45 | writeCobsEncodedTo(outputStream, message); 46 | } 47 | } 48 | 49 | public static void writeCobsEncodedTo(OutputStream outputStream, Message message) throws IOException { 50 | BufferedSink sink = Okio.buffer(Okio.sink(outputStream)); 51 | sink.write(CobsUtils.encode(message.encode())); 52 | sink.emit(); 53 | } 54 | 55 | public static List readCobsEncodedFrom(InputStream inputStream, ProtoAdapter adapter) throws IOException { 56 | List messages = new ArrayList<>(); 57 | BufferedSource source = Okio.buffer(Okio.source(inputStream)); 58 | while (!source.exhausted()) { 59 | long length = source.indexOf((byte) 0); 60 | byte[] decodedBytes = CobsUtils.decode(source.readByteArray(length + 1)); 61 | messages.add(adapter.decode(decodedBytes)); 62 | } 63 | return messages; 64 | } 65 | 66 | 67 | } 68 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 11 | 12 |