initial commit

.gitignore

@@ -0,0 +1,5 @@
+*.iml
+.gradle
+/.idea
+/build
+local.properties

README.md

@@ -0,0 +1,18 @@
+# DabMpg123DecoderPlugin
+
+This is a Plugin-App to decode MPEG-1 Layer 2 DAB Audio.
+
+## Why
+
+Most Android devices do not provide a decoder for MPEG-1 Layer-2 Audio. Even the MP3 decoders do not decode Layer-2 audio.
+The plugin will spawn a service with the defined interface in the "dabaudiodecoderplugininterface".
+
+The used decoder is MPG123 and therefore this plugin uses the same license. See https://www.mpg123.de/
+
+## How
+
+To compile the project to an Android Application (.apk) just import it into Android Studio or issue the 'gradlew' command on Linux/Mac or use the 'gradlew.bat' on Windows.
+You need to have the NDK installed.
+The compiled APK will be located in the build output folder.
+
+

build.gradle

@@ -0,0 +1,20 @@
+buildscript {
+    repositories {
+        jcenter()
+        google()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.1.2'
+    }
+}
+
+allprojects {
+    repositories {
+        jcenter()
+        google()
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}

dabaudiodecoderplugininterface/.gitignore

@@ -0,0 +1,2 @@
+*.iml
+/build

dabaudiodecoderplugininterface/build.gradle

@@ -0,0 +1,22 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 27
+    buildToolsVersion "27.0.3"
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion 27
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+}

dabaudiodecoderplugininterface/proguard-rules.pro

@@ -0,0 +1,17 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /home/sattler/android/android-sdk-linux/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}

dabaudiodecoderplugininterface/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="de.irt.dabaudiodecoderplugininterface">
+</manifest>

dabaudiodecoderplugininterface/src/main/aidl/de/irt/dabaudiodecoderplugininterface/IDabPluginCallback.aidl

@@ -0,0 +1,6 @@
+package de.irt.dabaudiodecoderplugininterface;
+
+interface IDabPluginCallback {
+
+    void decodedPcmData(in byte[] pcmData);
+}

dabaudiodecoderplugininterface/src/main/aidl/de/irt/dabaudiodecoderplugininterface/IDabPluginInterface.aidl

@@ -0,0 +1,12 @@
+package de.irt.dabaudiodecoderplugininterface;
+
+import de.irt.dabaudiodecoderplugininterface.IDabPluginCallback;
+
+interface IDabPluginInterface {
+
+    void setCallback(in IDabPluginCallback callback);
+
+    void configure(in int codec, in int samplingRate, in int channelCount, in boolean sbr);
+
+    void enqueueEncodedData(in byte[] audioData);
+}

dabaudiodecoderplugininterface/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">DabPluginInterface</string>
+</resources>

dabmpg123plugin/.gitignore

@@ -0,0 +1,4 @@
+/build
+/obj
+*.iml
+/libs

dabmpg123plugin/build.gradle

@@ -0,0 +1,51 @@
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 28
+    buildToolsVersion '27.0.3'
+    defaultConfig {
+        applicationId "de.irt.dabmpg123decoderplugin"
+        minSdkVersion 16
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+            debuggable false
+        }
+    }
+
+    sourceSets {
+        main {
+            jniLibs.srcDirs = ['libs']
+        }
+    }
+
+    task ndkBuild(type: Exec) {
+        def ndkDir = project.android.ndkDirectory.absolutePath
+        String osName = org.gradle.internal.os.OperatingSystem.current().getName()
+        if (org.gradle.internal.os.OperatingSystem.current().isLinux()) {
+            commandLine "$ndkDir/ndk-build", '-C', file("$projectDir").absolutePath
+        } else if (org.gradle.internal.os.OperatingSystem.current().isUnix()) {
+            //TODO consider UNIX build
+        } else if (org.gradle.internal.os.OperatingSystem.current().isWindows()) {
+            commandLine "$ndkDir/ndk-build.cmd", '-C', file("$projectDir").absolutePath
+        } else if (org.gradle.internal.os.OperatingSystem.current().isMacOsX()) {
+            //TODO consider OSX build
+        } else {
+            //unknown OS...Ooops...
+        }
+    }
+
+    tasks.withType(JavaCompile) {
+        compileTask -> compileTask.dependsOn ndkBuild
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation project(path: ':dabaudiodecoderplugininterface')
+}

dabmpg123plugin/jni/Android.mk

@@ -0,0 +1,184 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE    := libmpg123
+LOCAL_ARM_MODE  := arm
+LOCAL_CFLAGS    += -O3 -Wall -DHAVE_CONFIG_H  \
+				   -fomit-frame-pointer -funroll-all-loops -finline-functions -ffast-math
+
+LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/src
+
+LOCAL_CFLAGS += \
+	-DACCURATE_ROUNDING \
+	-DNO_REAL \
+	-DNO_32BIT
+
+ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
+	LOCAL_CFLAGS += -mfloat-abi=softfp -mfpu=neon -DOPT_NEON -DREAL_IS_FLOAT
+	LOCAL_SRC_FILES := \
+		src/check_neon.S \
+		src/compat.c \
+		src/dct64.c \
+		src/dither.c \
+		src/equalizer.c \
+		src/feature.c \
+		src/format.c \
+		src/frame.c \
+		src/icy.c \
+		src/icy2utf8.c \
+		src/id3.c \
+		src/index.c \
+		src/layer1.c \
+		src/layer2.c \
+		src/layer3.c \
+		src/libmpg123.c \
+		src/ntom.c \
+		src/optimize.c \
+		src/parse.c \
+		src/readers.c \
+		src/stringbuf.c \
+		src/synth.c \
+		src/synth_8bit.c \
+		src/tabinit.c \
+		src/synth_neon.S \
+	    src/synth_neon_accurate.S \
+		src/synth_stereo_neon.S \
+		src/synth_stereo_neon_accurate.S \
+		src/dct64_neon.S \
+		src/dct64_neon_float.S \
+		src/dct36_neon.S \
+        src/synth_arm_accurate.S
+endif
+
+ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
+	LOCAL_CFLAGS += -mfloat-abi=softfp -mfpu=neon -DOPT_NEON64 -DREAL_IS_FLOAT
+	LOCAL_SRC_FILES := \
+		src/check_neon.S \
+		src/compat.c \
+		src/dct64.c \
+		src/dither.c \
+		src/equalizer.c \
+		src/feature.c \
+		src/format.c \
+		src/frame.c \
+		src/icy.c \
+		src/icy2utf8.c \
+		src/id3.c \
+		src/index.c \
+		src/layer1.c \
+		src/layer2.c \
+		src/layer3.c \
+		src/libmpg123.c \
+		src/ntom.c \
+		src/optimize.c \
+		src/parse.c \
+		src/readers.c \
+		src/stringbuf.c \
+		src/synth.c \
+		src/synth_8bit.c \
+		src/tabinit.c \
+		src/synth_neon64.S \
+		src/synth_neon64_accurate.S \
+		src/synth_stereo_neon64.S \
+		src/synth_stereo_neon64_accurate.S \
+		src/dct64_neon64.S \
+		src/dct64_neon64_float.S \
+		src/dct36_neon64.S
+endif
+
+ifeq ($(TARGET_ARCH_ABI),x86)
+	LOCAL_CFLAGS     := -DACCURATE_ROUNDING -DHAVE_STRERROR -DOPT_SSE -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast -ffast-math
+	LOCAL_SRC_FILES := \
+		src/compat.c \
+		src/dct64.c \
+		src/dither.c \
+		src/equalizer.c \
+		src/feature.c \
+		src/format.c \
+		src/frame.c \
+		src/icy.c \
+		src/icy2utf8.c \
+		src/id3.c \
+		src/index.c \
+		src/layer1.c \
+		src/layer2.c \
+		src/layer3.c \
+		src/libmpg123.c \
+		src/ntom.c \
+		src/optimize.c \
+		src/parse.c \
+		src/readers.c \
+		src/stringbuf.c \
+		src/synth.c \
+		src/synth_8bit.c \
+		src/tabinit.c \
+		src/synth_real.c \
+		src/synth_s32.c \
+		src/synth_sse.S \
+		src/synth_sse_accurate.S \
+		src/synth_sse_float.S \
+		src/synth_sse_s32.S \
+		src/synth_stereo_sse_accurate.S \
+		src/synth_stereo_sse_float.S \
+		src/synth_stereo_sse_s32.S \
+		src/dct64_i386.c \
+		src/dct36_sse.S \
+		src/dct64_sse.S \
+		src/dct64_sse_float.S \
+		src/tabinit_mmx.S
+	LOCAL_LDLIBS += -Wl,--no-warn-shared-textrel
+endif
+
+ifeq ($(TARGET_ARCH_ABI),x86_64)
+	LOCAL_CFLAGS := -DACCURATE_ROUNDING  -DHAVE_STRERROR -DOPT_X86_64 -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast -ffast-math
+	LOCAL_SRC_FILES := \
+		src/compat.c \
+		src/dct64.c \
+		src/dither.c \
+		src/equalizer.c \
+		src/feature.c \
+		src/format.c \
+		src/frame.c \
+		src/icy.c \
+		src/icy2utf8.c \
+		src/id3.c \
+		src/index.c \
+		src/layer1.c \
+		src/layer2.c \
+		src/layer3.c \
+		src/libmpg123.c \
+		src/ntom.c \
+		src/optimize.c \
+		src/parse.c \
+		src/readers.c \
+		src/stringbuf.c \
+		src/synth.c \
+		src/synth_8bit.c \
+		src/tabinit.c \
+		src/synth_real.c \
+		src/synth_s32.c \
+		src/getcpuflags_x86_64.S \
+		src/synth_x86_64.S \
+		src/synth_x86_64_s32.S \
+		src/synth_x86_64_accurate.S \
+		src/synth_x86_64_float.S \
+		src/synth_stereo_x86_64_float.S \
+		src/synth_stereo_x86_64.S \
+		src/synth_stereo_x86_64_s32.S \
+		src/synth_stereo_x86_64_accurate.S \
+		src/dct36_x86_64.S \
+		src/dct64_x86_64.S \
+		src/dct64_x86_64_float.S
+endif
+
+include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_ARM_MODE  := arm
+LOCAL_MODULE    := mpg123plug
+LOCAL_SRC_FILES := mpg123-jni.cpp
+LOCAL_SHARED_LIBRARIES := libmpg123
+LOCAL_CFLAGS += -O3
+LOCAL_LDLIBS := -llog
+include $(BUILD_SHARED_LIBRARY) 

dabmpg123plugin/jni/Application.mk

@@ -0,0 +1,4 @@
+APP_STL := c++_shared
+#Old APP_PLATFORM needed for compatibility
+APP_PLATFORM := android-9
+APP_ABI := armeabi-v7a arm64-v8a x86 x86_64