fmod变声方法简单调用

发表于 | 分类于 | 阅读次数：

fmod是一个强大的声音引擎框架，QQ、魔兽世界及其他很多游戏都是使用的这套框架，框架内包含几十种声音类型，还可以修改声音的频率、速度等等。下面来简单调用一下fmod的变声方法。

下载 fmod API

进入fmod download下载Android API。

img

新建项目

勾选include c/c++ support。

img

勾选异常检测和安全转换

img

加入API

打开下载之后解压的fmod API目录，到api/lowlevel文件夹，把inc文件夹及里面的文件全部复制到项目的app/src/main/cpp文件夹中,把lib文件夹中的所有文件夹和文件复制到项目的app/libs文件夹中，jar包要右键add as library。

img

配置app/build.gradle

android/defaultConfig里新增：

1
2
3
ndk {
  abiFilters "armeabi","arm64-v8a","armeabi-v7a","x86"
}

android里新增：

1
2
3
4
sourceSets.main {
  jniLibs.srcDirs = ['libs']
  jni.srcDirs = []
}

img

配置app/CMakeLists.txt

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
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
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")

#--------------------------------
add_library( # Sets the name of the library.
             changeVoice

             # Sets the library as a shared library.
             SHARED

             # Provides a relative path to your source file(s).
             src/main/cpp/native-lib.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} )

代码部分

布局文件：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
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
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#FFF"
    android:gravity="center_horizontal"
    android:orientation="vertical"
    android:padding="10pt"
    >

  <LinearLayout
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:orientation="horizontal"
      >

    <Button
        android:id="@+id/btn_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="原声"
        />

    <Button
        android:id="@+id/btn_2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="萝莉"
        />


    <Button
        android:id="@+id/btn_3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="大叔"
        />
  </LinearLayout>

  <LinearLayout
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:orientation="horizontal"
      >

    <Button
        android:id="@+id/btn_4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="惊悚"
        />

    <Button
        android:id="@+id/btn_5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="搞怪"
        />

    <Button
        android:id="@+id/btn_6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="空灵"
        />
  </LinearLayout>
</LinearLayout>

java代码，新建Util类：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
public class Util {

  //音效的类型
  public static final int MODE_NORMAL = 0;//正常
  public static final int MODE_LUOLI = 1;//萝莉
  public static final int MODE_DASHU = 2;//大叔
  public static final int MODE_JINGSONG = 3;//惊悚
  public static final int MODE_GAOGUAI = 4;//搞怪
  public static final int MODE_KONGLING = 5;//空灵

  /**
   * 变声
   *
   * @param path 声音路径
   * @param type 变声类型
   */
  public static native void voiceChange(String path, int type);

  static {
    System.loadLibrary("fmodL");
    System.loadLibrary("fmod");
    System.loadLibrary("changeVoice");
  }
}

java代码，MainActivity类：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
public class MainActivity extends AppCompatActivity {

  @Override protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    FMOD.init(this);
    setContentView(R.layout.activity_main);
    findViewById(R.id.btn_1).setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View v) {
        VoiceFun1(v);
      }
    });
    findViewById(R.id.btn_2).setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View v) {
        VoiceFun2(v);
      }
    });
    findViewById(R.id.btn_3).setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View v) {
        VoiceFun3(v);
      }
    });
    findViewById(R.id.btn_4).setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View v) {
        VoiceFun4(v);
      }
    });
    findViewById(R.id.btn_5).setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View v) {
        VoiceFun5(v);
      }
    });
    findViewById(R.id.btn_6).setOnClickListener(new View.OnClickListener() {
      @Override public void onClick(View v) {
        VoiceFun6(v);
      }
    });
  }

  public void VoiceFun1(View btn) {
    String path = Environment.getExternalStorageDirectory().getAbsolutePath()
        + File.separatorChar
        + "/Download/10028.wav";
    File file = new File(path);
    if (file.exists()) {
      Toast.makeText(this, "变声-正常", Toast.LENGTH_SHORT).show();
      Util.voiceChange(path, Util.MODE_NORMAL);
      Log.e("x---", "VoiceFun1");
    } else {
      Log.e("x---", "file is not exist");
      Toast.makeText(this, "file is not exist", Toast.LENGTH_SHORT).show();
    }
  }

  public void VoiceFun2(View btn) {
    String path = Environment.getExternalStorageDirectory().getAbsolutePath()
        + File.separatorChar
        + "/Download/10028.wav";
    File file = new File(path);
    if (file.exists()) {
      Toast.makeText(this, "变声-萝莉", Toast.LENGTH_SHORT).show();
      Util.voiceChange(path, Util.MODE_LUOLI);
      Log.d("jason", "VoiceFun2");
    } else {
      Log.e("x---", "file is not exist");
      Toast.makeText(this, "file is not exist", Toast.LENGTH_SHORT).show();
    }
  }

  public void VoiceFun3(View btn) {
    String path = Environment.getExternalStorageDirectory().getAbsolutePath()
        + File.separatorChar
        + "/Download/10028.wav";
    File file = new File(path);
    if (file.exists()) {
      Toast.makeText(this, "变声-大叔", Toast.LENGTH_SHORT).show();
      Util.voiceChange(path, Util.MODE_DASHU);
      Log.e("x---", "VoiceFun3");
    } else {
      Log.e("x---", "file is not exist");
      Toast.makeText(this, "file is not exist", Toast.LENGTH_SHORT).show();
    }
  }

  public void VoiceFun4(View btn) {
    String path = Environment.getExternalStorageDirectory().getAbsolutePath()
        + File.separatorChar
        + "/Download/10028.wav";
    File file = new File(path);
    if (file.exists()) {
      Toast.makeText(this, "变声-惊悚", Toast.LENGTH_SHORT).show();
      Util.voiceChange(path, Util.MODE_JINGSONG);
      Log.e("x---", "VoiceFun4");
    } else {
      Log.e("x---", "file is not exist");
      Toast.makeText(this, "file is not exist", Toast.LENGTH_SHORT).show();
    }
  }

  public void VoiceFun5(View btn) {
    String path = Environment.getExternalStorageDirectory().getAbsolutePath()
        + File.separatorChar
        + "/Download/10028.wav";
    File file = new File(path);
    if (file.exists()) {
      Toast.makeText(this, "变声-搞笑", Toast.LENGTH_SHORT).show();
      Util.voiceChange(path, Util.MODE_GAOGUAI);
      Log.e("x---", "VoiceFun5");
    } else {
      Log.e("x---", "file is not exist");
      Toast.makeText(this, "file is not exist", Toast.LENGTH_SHORT).show();
    }
  }

  public void VoiceFun6(View btn) {
    String path = Environment.getExternalStorageDirectory().getAbsolutePath()
        + File.separatorChar
        + "/Download/10028.wav";
    File file = new File(path);
    if (file.exists()) {
      Toast.makeText(this, "变声-空灵", Toast.LENGTH_SHORT).show();
      Util.voiceChange(path, Util.MODE_KONGLING);
      Log.e("x---", "VoiceFun6");
    } else {
      Log.e("x---", "file is not exist");
      Toast.makeText(this, "file is not exist", Toast.LENGTH_SHORT).show();
    }
  }

  @Override protected void onDestroy() {
    super.onDestroy();
    FMOD.close();
  }

  @Override public void onBackPressed() {
    super.onBackPressed();
    finish();
  }
}

C++代码，app/src/main/cpp/native-lib.cpp:

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
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
116
#include <jni.h>
#include "inc/fmod.hpp"
#include <string>

#include <unistd.h>

using namespace FMOD;

#define MODE_NORMAL 0
#define MODE_LUOLI 1
#define MODE_DASHU 2
#define MODE_JINGSONG 3
#define MODE_GAOGUAI 4
#define MODE_KONGLING 5

#include <android/log.h>

#define LOGI(FORMAT, ...) __android_log_print(ANDROID_LOG_INFO,"voiceChange",FORMAT,##__VA_ARGS__);
#define LOGE(FORMAT, ...) __android_log_print(ANDROID_LOG_ERROR,"voiceChange",FORMAT,##__VA_ARGS__);

extern "C"
JNIEXPORT void JNICALL
Java_com_exp_fmodvoicechange_Util_voiceChange(JNIEnv *env, jclass cls, jstring path_str, jint type) {
    System * system;
    Sound * sound;
    Channel  *channel;
    DSP *dsp;
    bool playing= true;
    float frequency=1;

    //初始化
    System_Create(&system);
    system->init(32, FMOD_INIT_NORMAL, NULL);

    //将string转成char*
    const char* path=env->GetStringUTFChars(path_str,NULL);

    //创建声音
    system->createSound(path,FMOD_DEFAULT, 0, &sound);
    try {
        //根据类型改变声音
        switch (type) {
            case MODE_NORMAL:
                //正常声音
                system->playSound(sound, 0, false, &channel);
                break;
            case MODE_LUOLI:
                //萝莉
                //DSP digital signal process
                //dsp -> 音效 创建fmod中预定义好的音效
                //FMOD_DSP_TYPE_PITCHSHIFT dsp，提升或者降低音调用的一种音效
                system->createDSPByType(FMOD_DSP_TYPE_PITCHSHIFT, &dsp);
                //提高音效
                dsp->setParameterFloat(FMOD_DSP_TYPE_PITCHSHIFT, 2.5);
                //播放声音
                system->playSound(sound, 0, false, &channel);
                //将channel添加到dsp
                channel->addDSP(0, dsp);
                break;
            case MODE_DASHU:
                //大叔
                system->createDSPByType(FMOD_DSP_TYPE_PITCHSHIFT, &dsp);
                //降低声音
                dsp->setParameterFloat(FMOD_DSP_PITCHSHIFT_PITCH, 0.8);
                //播放声音
                system->playSound(sound, 0, false, &channel);
                //将channel添加到dsp
                channel->addDSP(0, dsp);
                break;
            case MODE_JINGSONG:
                //惊悚
                system->createDSPByType(FMOD_DSP_TYPE_TREMOLO, &dsp);
                dsp->setParameterFloat(FMOD_DSP_TREMOLO_SKEW, 0.5);
                system->playSound(sound, 0, false, &channel);
                channel->addDSP(0, dsp);
                break;
            case MODE_GAOGUAI:
                //搞怪
                //提高说话的速度
                system->playSound(sound, 0, false, &channel);
                //frequency  原来的声音速度
                channel->getFrequency(&frequency);
                frequency = frequency * 1.6;
                channel->setFrequency(frequency);
                break;
            case MODE_KONGLING:
                //空灵
                system->createDSPByType(FMOD_DSP_TYPE_ECHO, &dsp);
                dsp->setParameterFloat(FMOD_DSP_ECHO_DELAY, 300);
                dsp->setParameterFloat(FMOD_DSP_ECHO_FEEDBACK, 20);
                system->playSound(sound, 0, false, &channel);
                channel->addDSP(0, dsp);
                break;
            default:
                break;
        }
    }
    catch (...){
        //捕捉异常
        LOGE("%s","发生异常");
    }
    system->update();
    //释放资源
    //单位是微秒
    //每秒钟判断下是否在播放
    while(playing){
        channel->isPlaying(&playing);
        usleep(1000 * 1000);
    }

    //释放
    sound->release();
    system->close();
    system->release();
    env->ReleaseStringUTFChars(path_str,path);
}

最后

  • 界面：
    img
  • 项目配置：
    1. Android Studio 2.3.3
    2. gradle 2.3.3
    3. sdk version 26
    4. fmod API version 1.10.10
    5. ndk version 14

  • 权限：

    1
    2
    3
    4
    5
    6
    7
    <!-- xmlns:tools="http://schemas.android.com/tools" -->
    <!--读写sd卡权限-->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <uses-permission
          android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"
          tools:ignore="ProtectedPermissions" />

  • 项目地址

0%