音频修改工具

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

app/.gitignore

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+/build

app/CMakeLists.txt

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+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html
+
+# Sets the minimum version of CMake required to build the native library.
+
+cmake_minimum_required(VERSION 3.4.1)
+
+find_library( log-lib
+              log )
+
+set(my_lib_path ${CMAKE_SOURCE_DIR}/libs)
+
+# 添加三方的so库
+add_library(libfmod
+            SHARED
+            IMPORTED )
+# 指名第三方库的绝对路径
+set_target_properties( libfmod
+                       PROPERTIES IMPORTED_LOCATION
+                       ${my_lib_path}/${ANDROID_ABI}/libfmod.so )
+
+add_library(libfmodL
+            SHARED
+            IMPORTED )
+
+set_target_properties( libfmodL
+                       PROPERTIES IMPORTED_LOCATION
+                       ${my_lib_path}/${ANDROID_ABI}/libfmodL.so )
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
+
+# 添加我们需要写代码的路径
+add_library(changeVoice
+            SHARED
+            src/main/cpp/changeVoice.cpp )
+
+# 导入路径，为了让编译时能够寻找到这个文件夹
+include_directories(src/main/cpp/inc)
+
+# 链接好三个路径
+target_link_libraries( changeVoice
+                       libfmod
+                       libfmodL
+
+                       ${log-lib} )
+

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 26
+    defaultConfig {
+        applicationId "com.mg.axechen.changevoice"
+        minSdkVersion 15
+        targetSdkVersion 26
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+        externalNativeBuild {
+            cmake {
+                cppFlags "-frtti -fexceptions"
+            }
+        }
+
+        ndk {
+            abiFilters "armeabi","x86"
+        }
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    externalNativeBuild {
+        cmake {
+            path "CMakeLists.txt"
+        }
+    }
+
+    sourceSets.main {
+        jniLibs.srcDirs = ['libs']
+        jni.srcDirs = []
+    }
+}
+
+dependencies {
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
+    implementation 'com.android.support:appcompat-v7:26.1.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.1'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# 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 *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/mg/axechen/changevoice/ExampleInstrumentedTest.java

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+package com.mg.axechen.changevoice;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.mg.axechen.changevoice", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.mg.axechen.changevoice">
+
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/cpp/changeVoice.cpp

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+#include "com_mg_axechen_changevoice_VoiceTools.h"
+#include "fmod.hpp"
+#include <unistd.h>
+#include <android/log.h>
+using namespace FMOD;
+
+// 定义五种不同的模式
+#define MODE_NORMAL 0
+#define MODE_LUOLI 1
+#define MODE_DASHU 2
+#define MODE_JINGSONG 3
+#define MODE_GAOGUAI 4
+#define MODE_KONGLING 5
+
+#define LOGI(FORMAT,...) __android_log_print(ANDROID_LOG_INFO,"axe",FORMAT,##__VA_ARGS__);
+#define LOGE(FORMAT,...) __android_log_print(ANDROID_LOG_ERROR,"axe",FORMAT,##__VA_ARGS__);
+extern "C"
+
+JNICALL
+JNIEXPORT void JNICALL Java_com_mg_axechen_changevoice_VoiceTools_changeVoice
+        (JNIEnv *jniEnv, jclass jclass, jstring jstring,jint mode){
+
+    // 初始化fmod
+    FMOD::System *system;
+    FMOD::System_Create(&system);
+    Sound *sound;
+    // 通道（声音是由多种音效组成）
+    Channel *channel;
+    DSP *pDSP;
+    float frequency;
+
+    system->init(32,FMOD_INIT_NORMAL,NULL);
+
+    // 将 jstring转为 char
+    const char *path = jniEnv->GetStringUTFChars(jstring,NULL);
+
+    system->createSound(path,FMOD_DEFAULT,NULL,&sound);
+
+
+
+    try {
+        switch (mode){
+            case MODE_NORMAL:
+                LOGI("%s","正常");
+                system->playSound(sound,NULL, false,&channel);
+                break;
+            case MODE_DASHU:
+                system->createDSPByType(FMOD_DSP_TYPE_PITCHSHIFT,&pDSP);
+                pDSP->setParameterFloat(FMOD_DSP_PITCHSHIFT_PITCH,0.7);
+                system->playSound(sound,NULL, false,&channel);
+                channel->addDSP(0,pDSP);
+                LOGI("%s","正常");
+                break;
+            case MODE_LUOLI:
+                system->createDSPByType(FMOD_DSP_TYPE_PITCHSHIFT,&pDSP);
+                pDSP->setParameterFloat(FMOD_DSP_PITCHSHIFT_PITCH,3);
+                system->playSound(sound,NULL, false,&channel);
+                channel->addDSP(0,pDSP);
+                LOGI("%s","萝莉");
+                break;
+            case MODE_GAOGUAI:
+                LOGI("%s","搞怪");
+                system->createDSPByType(FMOD_DSP_TYPE_NORMALIZE, &pDSP);
+                system->playSound(sound, NULL, false, &channel);
+                channel->addDSP(0, pDSP);
+                channel->getFrequency(&frequency);
+                frequency = frequency*1.6;
+                channel->setFrequency(frequency);
+                break;
+            case MODE_JINGSONG:
+                // FMOD_DSP_TYPE_TREMOLO 颤抖
+
+                system->createDSPByType(FMOD_DSP_TYPE_TREMOLO, &pDSP);
+                pDSP->setParameterFloat(FMOD_DSP_TREMOLO_SKEW,0.5);
+
+                system->playSound(sound, NULL, false, &channel);
+                channel->addDSP(0, pDSP);
+                LOGI("%s","惊悚");
+                break;
+            case MODE_KONGLING:
+                LOGI("%s","空灵");
+                system->createDSPByType(FMOD_DSP_TYPE_ECHO, &pDSP);
+                pDSP->setParameterFloat(FMOD_DSP_ECHO_DELAY,300);
+                pDSP->setParameterFloat(FMOD_DSP_ECHO_FEEDBACK,20);
+                system->playSound(sound, NULL, false, &channel);
+                channel->addDSP(0, pDSP);
+                break;
+
+        }
+
+
+        system->update();
+        bool isPlaying = true;
+        // 需要等待，等声音全部播放完成
+        // 检查是否播放完成
+        while (isPlaying){
+            channel ->isPlaying(&isPlaying);
+            usleep(1000);
+        }
+    }catch (...){
+        goto end;
+    }
+
+    // 回收内存
+    end:
+        system->close();
+        system->release();
+        jniEnv ->ReleaseStringUTFChars(jstring,path);
+
+}
+
+
+