使用本地库(C而已,没有C ++),并没有发现实施 [英] Using native lib (C only, no C++), and No Implementation Found
问题描述
试图在Android上巨著和AFAIK,链接和期待的.so好。
错误的调用C函数(我也跟着这些intstructs 的)
D / OpusRecorder(1964):开始录制!
E /艺术(1964年):未找到INT com.droidkit.opus.OpusLib.startRecord(java.lang.String中)实现(试过Java_com_droidkit_opus_OpusLib_startRecord和Java_com_droidkit_opus_OpusLib_startRecord__Ljava_lang_String_2)
E / AndroidRuntime(1964):致命异常:螺纹8227
E / AndroidRuntime(1964):工艺:com.borneo.speech,PID:1964
E / AndroidRuntime(1964):java.lang.UnsatisfiedLinkError中:未找到INT com.droidkit.opus.OpusLib.startRecord(java.lang.String中)实现(试过Java_com_droidkit_opus_OpusLib_startRecord和Java_com_droidkit_opus_OpusLib_startRecord__Ljava_lang_String_2)
E / AndroidRuntime(1964):在com.droidkit.opus.OpusLib.startRecord(本机方法)
E / AndroidRuntime(1964年):在com.borneo.speech.OpusRecorder.run(OpusRecorder.java:439)
W / ActivityManager(724):强制完成活动1 com.borneo.speech / .Speech_API_Activity
中的.so打包在APK
功能与类型=T...
中的.so存在 AAR $纳米-D libopus.so |头
000084c1ŧJava_com_droidkit_opus_OpusLib_closeOpusFile
000084c5ŧJava_com_droidkit_opus_OpusLib_isOpusFile
00008491ŧJava_com_droidkit_opus_OpusLib_openOpusFile
00008471ŧJava_com_droidkit_opus_OpusLib_readOpusFile
00008489ŧJava_com_droidkit_opus_OpusLib_seekOpusFile
00008145ŧJava_com_droidkit_opus_OpusLib_startRecord ***
---铛细节---
在C实现的:
audio.c
的#includecom_droidkit_opus_OpusLib.h< - 从Java类= com.droidkit.opus.OpusLib通过JAVAH
//转每贝罗@Nicklas
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord(JNIEnv的* ENV,jobject javaThis,路径的jstring){
为const char * pathStr =(* ENV) - GT; GetStringUTFChars(ENV,路径,0); INT结果= initRecorder(pathStr); 如果(pathStr!= 0){
(* ENV) - GT; ReleaseStringUTFChars(ENV,路径,pathStr);
} 返回结果;
}
C头...
/ * DO NOT EDIT这个文件 - 它是生成的机器* /
#包括LT&;&jni.h GT;
/ *头类com_droidkit_opus_OpusLib * /的#ifndef _Included_com_droidkit_opus_OpusLib
#定义_Included_com_droidkit_opus_OpusLib
#IFDEF __cplusplus
为externC{
#万一
/ *
*类别:com_droidkit_opus_OpusLib
*方法:startRecord用于
*签名:(Ljava /朗/字符串;)我
* /
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord
(JNIEnv的*,jobject,的jstring);/ *
*类别:com_droidkit_opus_OpusLib
*方法:writeFrame
*签名:(Ljava / NIO / ByteBuffer的;我)我
* /
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_writeFrame
(JNIEnv的*,jobject,jobject,jint);/ *
*类别:com_droidkit_opus_OpusLib
*方法:STO precord
*签名:()V
* /
JNIEXPORT无效JNICALL Java_com_droidkit_opus_OpusLib_sto precord
(JNIEnv的*,jobject);/ *
*类别:com_droidkit_opus_OpusLib
*方法:isOpusFile
*签名:(Ljava /朗/字符串;)我
* /
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_isOpusFile
(JNIEnv的*,jobject,的jstring);...
#IFDEF __cplusplus
}
#万一
#万一
=== JAVA详细呼吁为C ===
== == EDITED Java本地申报。
/ **
* OpusLib结合本土
* /
公共类OpusLib { 静态的 {
的System.loadLibrary(作品);
} / **
*启动OPUS记录
*
* @参数路径文件路径
* @返回非零如果玩家开始
* /
公共本土INT startRecord用于(字符串路径);
/ **
*写作音频帧EN codeR
*
*有声在16位单声道PCM格式16000 @参数帧缓冲
* @参数LEN LEN数据
返回:不为空,如果成功
* /
公共本土INT writeFrame(ByteBuffer的框架,INT LEN); / **
*停车记录
* /
公共本土无效STO precord(); / **
*检查作品文件格式
*
* @参数路径文件路径
* @返回非零如果OPUS文件
* /
公共本土INT isOpusFile(字符串路径); / **
*打开文件
*
* @参数路径文件路径
* @返回非零如果成功
* /
公共本土INT openOpusFile(字符串路径); / **
*在OPUS文件求
*
*文件@param位置的位置
* @返回非零如果成功
* /
公共本土INT seekOpusFile(浮动位); / **
*截止OPUS文件
* /
公共本土无效closeOpusFile(); / **
*从OPUS文件中读取
*
* @参数缓冲区
* @参数容量
* /
公共本土无效readOpusFile(ByteBuffer的缓冲区,诠释能力); / **
*是否播放完毕
*
* @返回非零如果回放结束
* /
公共本土INT getFinished(); / **
*在readOpusFile读取的块大小
*
以字节为单位* @返回块大小
* /
公共本土INT的getSize(); / **
*偏移实际的声音回放的
*
* @返回偏移
* /
公共天然长getPcmOffset(); / **
*总OPUS PCM时间
*
* @返回PCM时间
* /
公共天然长getTotalPcmDuration();} 尝试{
OPUS =新OpusLib();
}赶上(ULX的UnsatisfiedLinkError){
Log.e(LTAG,非法机负载:+ ulx.getMessage());
}...
公共类OpusLib {
静态的 {
的System.loadLibrary(作品);
}
据我所知,LIB是越来越加载确定
UnsatisfiedLink EXCP下面最后一行出现
私有String =的mpath路径;
如果(mShouldRecord)
INT薄荷= opus.startRecord(的mpath); < - 抛出unsatisfiedLink - 没有发现实施
startRecord用于在符号表本书虽然我不是一定所有的功能PARM的类型匹配起来?看到STRING_2...
startRecord__Ljava_lang_String_2)
====构建信息摇篮和linkedit ===
链接:
命令:/ usr / local / src目录/ Android的NDK-r10d / NDK的构建NDK_PROJECT_PATH = NULL APP_BUILD_SCRIPT=/home/rob/src/tmp/speechnw/libraries/opus/build/intermediates/ndk/release/Android.mk APP_PLATFORM = Android的19 NDK_OUT = /家庭/抢劫/ src目录的/ tmp / speechnw /库/ OPUS /编译/中间体/ NDK /发行/ OBJ NDK_LIBS_OUT = /家庭/抢劫/ src目录的/ tmp / speechnw /库/ OPUS /编译/中间体/ NDK /发行/ lib目录APP_STL = stlport_static APP_ABI = armeabi,V7A[armeabi-V7A]编译大拇指:OPUS< = audio.c
...
[armeabi-V7A] SharedLibrary:libopus.so
[armeabi-V7A]安装:libopus.so => /home/rob/src/tmp/speechnw/libraries/opus/build/intermediates/ndk/release/lib/armeabi-v7a/libopus.so
的build.gradle
defaultConfig {
8的minSdkVersion
targetSdkVersion 19
版本code 1
的versionName1.1.1
NDK {
MODULENAME巨著 CFLAGS-DANDROID_NDK+
-DDISABLE_IMPORTGL+
-w -std = gnu99 -O3 -fno严格走样-f prefetch环阵列+
-DNULL = 0 -DSOCKLEN_T = socklen_t的-DLOCALE_NOT_USED -D_LARGEFILE_SOURCE = 1 -D_FILE_OFFSET_BITS = 64+
-Drestrict =''-D__EMX__ -DOPUS_BUILD -DFIXED_POINT -DUSE_ALLOCA -DHAVE_LRINT -DHAVE_LRINTF -fno-数学错误号
-DAVOID_TABLES
LDLIBS日志,m的
STLstlport_static
abiFilterarmeabi-V7A
}
}
替换此行:
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord(JNIEnv的* ENV,JCLASS类的jstring路径){
与
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord(JNIEnv的* ENV,jobject javaThis,路径的jstring){
您已经用C映射定义Java中的静态方法,但在Java你使用它作为一个实例方法的功能。我把它换成是这样的: JCLASS类,
与 jobject javaThis,
在你的C函数签名。另请注意,在你的C头你还宣布与实例方法签名的功能,只是因为它似乎你打算。
tried using this lib for opus on android and AFAIK, the link and the .so look to be good.
ERROR on call to C function ( i followed these intstructs )
D/OpusRecorder( 1964): Start recording!
E/art ( 1964): No implementation found for int com.droidkit.opus.OpusLib.startRecord(java.lang.String) (tried Java_com_droidkit_opus_OpusLib_startRecord and Java_com_droidkit_opus_OpusLib_startRecord__Ljava_lang_String_2)
E/AndroidRuntime( 1964): FATAL EXCEPTION: Thread-8227
E/AndroidRuntime( 1964): Process: com.borneo.speech, PID: 1964
E/AndroidRuntime( 1964): java.lang.UnsatisfiedLinkError: No implementation found for int com.droidkit.opus.OpusLib.startRecord(java.lang.String) (tried Java_com_droidkit_opus_OpusLib_startRecord and Java_com_droidkit_opus_OpusLib_startRecord__Ljava_lang_String_2)
E/AndroidRuntime( 1964): at com.droidkit.opus.OpusLib.startRecord(Native Method)
E/AndroidRuntime( 1964): at com.borneo.speech.OpusRecorder.run(OpusRecorder.java:439)
W/ActivityManager( 724): Force finishing activity 1 com.borneo.speech/.Speech_API_Activity
The .so is packaged in apk
function exist in the .so with Type= "T"...
aar$ nm -D libopus.so | head
000084c1 T Java_com_droidkit_opus_OpusLib_closeOpusFile
000084c5 T Java_com_droidkit_opus_OpusLib_isOpusFile
00008491 T Java_com_droidkit_opus_OpusLib_openOpusFile
00008471 T Java_com_droidkit_opus_OpusLib_readOpusFile
00008489 T Java_com_droidkit_opus_OpusLib_seekOpusFile
00008145 T Java_com_droidkit_opus_OpusLib_startRecord ***
---CLang details---
implementation in C:
audio.c
#include "com_droidkit_opus_OpusLib.h" <-- from the Java class=com.droidkit.opus.OpusLib via javah
//rev belo per @Nicklas
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord(JNIEnv *env, jobject javaThis, jstring path) {
const char *pathStr = (*env)->GetStringUTFChars(env, path, 0);
int result = initRecorder(pathStr);
if (pathStr != 0) {
(*env)->ReleaseStringUTFChars(env, path, pathStr);
}
return result;
}
c headers...
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class com_droidkit_opus_OpusLib */
#ifndef _Included_com_droidkit_opus_OpusLib
#define _Included_com_droidkit_opus_OpusLib
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: com_droidkit_opus_OpusLib
* Method: startRecord
* Signature: (Ljava/lang/String;)I
*/
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord
(JNIEnv *, jobject, jstring);
/*
* Class: com_droidkit_opus_OpusLib
* Method: writeFrame
* Signature: (Ljava/nio/ByteBuffer;I)I
*/
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_writeFrame
(JNIEnv *, jobject, jobject, jint);
/*
* Class: com_droidkit_opus_OpusLib
* Method: stopRecord
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_com_droidkit_opus_OpusLib_stopRecord
(JNIEnv *, jobject);
/*
* Class: com_droidkit_opus_OpusLib
* Method: isOpusFile
* Signature: (Ljava/lang/String;)I
*/
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_isOpusFile
(JNIEnv *, jobject, jstring);
...
#ifdef __cplusplus
}
#endif
#endif
===JAVA Details Calls to C===
==EDITED== Java Native Decl.
/**
* OpusLib native binding
*/
public class OpusLib {
static {
System.loadLibrary("opus");
}
/**
* Starting opus recording
*
* @param path path to file
* @return non zero if started player
*/
public native int startRecord(String path);
/**
* Writing audio frame to encoder
*
* @param frame buffer with sound in 16 bit mono PCM 16000 format
* @param len len of data
* @return not null if successful
*/
public native int writeFrame(ByteBuffer frame, int len);
/**
* Stopping record
*/
public native void stopRecord();
/**
* Checking Opus File format
*
* @param path path to file
* @return non zero if opus file
*/
public native int isOpusFile(String path);
/**
* Opening file
*
* @param path path to file
* @return non zero if successful
*/
public native int openOpusFile(String path);
/**
* Seeking in opus file
*
* @param position position in file
* @return non zero if successful
*/
public native int seekOpusFile(float position);
/**
* Closing opus file
*/
public native void closeOpusFile();
/**
* Reading from opus file
*
* @param buffer
* @param capacity
*/
public native void readOpusFile(ByteBuffer buffer, int capacity);
/**
* Is playback finished
*
* @return non zero if playback is finished
*/
public native int getFinished();
/**
* Read block size in readOpusFile
*
* @return block size in bytes
*/
public native int getSize();
/**
* Offset of actual sound for playback
*
* @return offset
*/
public native long getPcmOffset();
/**
* Total opus pcm duration
*
* @return pcm duration
*/
public native long getTotalPcmDuration();
}
try {
opus = new OpusLib();
}catch(UnsatisfiedLinkError ulx) {
Log.e(LTAG, "Illegal native Load: " + ulx.getMessage());
}
...
public class OpusLib {
static {
System.loadLibrary("opus");
}
AFAIK , lib is getting loaded ok
UnsatisfiedLink Excp occurs on last line below:
private String mPath = path;
if (mShouldRecord)
int mint = opus.startRecord(mPath); <-- throws unsatisfiedLink - no implementation found
startRecord is in the symbols table altho im not certain all the function parm types match up? see the "string_2"...
startRecord__Ljava_lang_String_2)
==== Build info Gradle and linkedit ===
link :
command: /usr/local/src/android-ndk-r10d/ndk-build NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=/home/rob/src/tmp/speechnw/libraries/opus/build/intermediates/ndk/release/Android.mk APP_PLATFORM=android-19 NDK_OUT=/home/rob/src/tmp/speechnw/libraries/opus/build/intermediates/ndk/release/obj NDK_LIBS_OUT=/home/rob/src/tmp/speechnw/libraries/opus/build/intermediates/ndk/release/lib APP_STL=stlport_static APP_ABI=armeabi-v7a
[armeabi-v7a] Compile thumb : opus <= audio.c
...
[armeabi-v7a] SharedLibrary : libopus.so
[armeabi-v7a] Install : libopus.so => /home/rob/src/tmp/speechnw/libraries/opus/build/intermediates/ndk/release/lib/armeabi-v7a/libopus.so
build.gradle
defaultConfig { minSdkVersion 8 targetSdkVersion 19 versionCode 1 versionName "1.1.1"
ndk {
moduleName "opus"
cFlags "-DANDROID_NDK " +
"-DDISABLE_IMPORTGL " +
"-w -std=gnu99 -O3 -fno-strict-aliasing -fprefetch-loop-arrays " +
"-DNULL=0 -DSOCKLEN_T=socklen_t -DLOCALE_NOT_USED -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 "+
"-Drestrict='' -D__EMX__ -DOPUS_BUILD -DFIXED_POINT -DUSE_ALLOCA -DHAVE_LRINT -DHAVE_LRINTF -fno-math-errno "
"-DAVOID_TABLES "
ldLibs "log", "m"
stl "stlport_static"
abiFilter "armeabi-v7a"
}
}
Replace this line:
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord(JNIEnv *env, jclass class, jstring path) {
with:
JNIEXPORT jint JNICALL Java_com_droidkit_opus_OpusLib_startRecord(JNIEnv *env, jobject javaThis, jstring path) {
The function you've defined in C maps to a static method in Java, but in Java you're using it as an instance method. What I've replaced is this: jclass class,
with jobject javaThis,
in your C function signature. Please also note that in your C headers you've also declared the functions with instance method signatures, just as it seems you're intending to.
这篇关于使用本地库(C而已,没有C ++),并没有发现实施的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!