庆祝一下，Android视频采集+H264编码成功

庆祝一下，Android视频采集+H264编码成功

2010-12-06 14:13 8480人阅读 评论(58) 收藏 举报

编码器使用的是x264的开源库，

 

很容易看懂的

简单的封装了一个JNI库

 

编码库在BBS里 优快云的资源太难用了

http://www.eoeandroid.com/forum.php?mod=viewthread&tid=52739&extra=

 

x264的编译放方法

 

export ARM_ROOT=$ANDROID_NDK_ROOT
export ARM_INC=$ARM_ROOT/build/platforms/android-5/arch-arm/usr/include/
export ARM_LIB=$ARM_ROOT/build/platforms/android-5/arch-arm/usr/lib/
export ARM_TOOL=$ARM_ROOT/build/prebuilt/windows/arm-eabi-4.4.0
export ARM_LIBO=$ARM_TOOL/lib/gcc/arm-eabi/4.4.0
export PATH=$ARM_TOOL/bin:$PATH
export ARM_PRE=arm-eabi

./configure --prefix=/home/egmkang/libx264 --enable-shared /
-disable-asm --host=arm-linux --cross-prefix=arm-eabi-/
--extra-cflags=" -I$ARM_INC -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__  -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -DANDROID  -Wa,--noexecstack -MMD -MP "/
--extra-ldflags="-nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack  -Wl,-z,nocopyreloc -Wl,-soname,/system/lib/libz.so -Wl,-rpath-link=$ARM_LIB,-dynamic-linker=/system/bin/linker -L$ARM_LIB -nostdlib $ARM_LIB/crtbegin_dynamic.o $ARM_LIB/crtend_android.o -lc -lm -ldl -lgcc"

这里生成的是x264的静态库

 

整个工程唯一有点麻烦的是 生成 JNI 动态库的时候 报错 。。

 

后来发现是少链接了一个库，

于是根据x264的编译方法 在Android.mk添加一些配置就可以了。当然这就是难点，在网上查了很多都没有结果。

 

有些目录的参数自己调整哈

我把前面生成的libx264.a 和 x264.h 文件放到jni的libx264目录下了 有问题自己调整

 

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
LOCAL_C_INCLUDES +=$(LOCAL_PATH)/libx264/include
LOCAL_MODULE    := H264Android
LOCAL_SRC_FILES := H264Android.c
LOCAL_LDFLAGS += $(LOCAL_PATH)/libx264/lib/libx264.a
LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -lgcc

include $(BUILD_SHARED_LIBRARY)

 

 

 

估计很多人都会发现很熟悉 嘻嘻 这个就是根据

http://www.cnblogs.com/mcodec/articles/1780598.html

改的 连文件名字都没有换！！比较懒

 

 

 

另： 编码的效率很低下啊

 

 

AndroidVideo.java

view plain print ?

1. import java.io.File;  
2. import java.io.RandomAccessFile;  
3. import android.app.Activity;  
4. import android.content.Intent;  
5. import android.os.Bundle;  
6. import android.view.View;  
7. import android.content.res.Configuration;  
8. import android.os.Bundle;  
9. import android.util.Log;  
10. import android.view.SurfaceHolder;  
11. import android.view.SurfaceView;  
12. import android.view.Window;  
13. import android.view.WindowManager;  
14. import android.view.SurfaceHolder.Callback;  
15. import android.graphics.PixelFormat;  
16. import android.hardware.Camera;  
17. public class AndroidVideo extends Activity implements Callback,  
18.         Camera.PictureCallback {  
19.     private SurfaceView mSurfaceView = null;  
20.     private SurfaceHolder mSurfaceHolder = null;  
21.     private Camera mCamera = null;  
22.     private boolean mPreviewRunning = false;  
23.     public void onCreate(Bundle savedInstanceState) {  
24.         super.onCreate(savedInstanceState);  
25.         getWindow().setFormat(PixelFormat.TRANSLUCENT);  
26.         requestWindowFeature(Window.FEATURE_NO_TITLE);  
27.         getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,  
28.                 WindowManager.LayoutParams.FLAG_FULLSCREEN);  
29.         setContentView(R.layout.camera);  
30.         mSurfaceView = (SurfaceView) this.findViewById(R.id.surface_camera);  
31.         mSurfaceHolder = mSurfaceView.getHolder();  
32.         mSurfaceHolder.addCallback(this);  
33.         mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);  
34.     }  
35.       
36.     @Override  
37.     public void onPictureTaken(byte[] data, Camera camera) {  
38.     }  
39.     @Override  
40.     public void surfaceChanged(SurfaceHolder holder, int format, int width,  
41.             int height) {  
42.         if (mPreviewRunning) {  
43.             mCamera.stopPreview();  
44.         }  
45.         Camera.Parameters p = mCamera.getParameters();  
46.         p.setPreviewSize(352, 288);  
47.         mCamera.setPreviewCallback(new H264Encoder(352, 288));  
48.         mCamera.setParameters(p);  
49.         try {  
50.             mCamera.setPreviewDisplay(holder);  
51.         } catch (Exception ex) {  
52.         }  
53.         mCamera.startPreview();  
54.         mPreviewRunning = true;  
55.     }  
56.     @Override  
57.     public void surfaceCreated(SurfaceHolder holder) {  
58.         mCamera = Camera.open();  
59.     }  
60.     @Override  
61.     public void surfaceDestroyed(SurfaceHolder holder) {  
62.         if (mCamera != null) {  
63.             mCamera.setPreviewCallback(null);  
64.             mCamera.stopPreview();  
65.             mPreviewRunning = false;  
66.             mCamera.release();  
67.             mCamera = null;  
68.         }  
69.     }  
70.     public void onConfigurationChanged(Configuration newConfig) {  
71.         try {  
72.             super.onConfigurationChanged(newConfig);  
73.             if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {  
74.             } else if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {  
75.             }  
76.         } catch (Exception ex) {  
77.         }  
78.     }  
79. }  
80. class H264Encoder implements Camera.PreviewCallback {  
81.     long encoder=0;  
82.     RandomAccessFile raf=null;  
83.     byte[] h264Buff =null;  
84.     static {  
85.         System.loadLibrary("H264Android");  
86.     }  
87.     private H264Encoder(){};  
88.       
89.     public H264Encoder(int width, int height) {  
90.         encoder = CompressBegin(width, height);  
91.         h264Buff = new byte[width * height *8];  
92.         try {  
93.             File file = new File("/sdcard/camera.h264");  
94.             raf = new RandomAccessFile(file, "rw");  
95.         } catch (Exception ex) {  
96.             Log.v("System.out", ex.toString());  
97.         }  
98.           
99.     };  
100.     protected void finalize()  
101.     {  
102.         CompressEnd(encoder);  
103.         if (null != raf)  
104.         {  
105.             try {  
106.                 raf.close();  
107.             } catch (Exception ex) {  
108.                 Log.v("System.out", ex.toString());  
109.             }  
110.         }  
111.         try {  
112.             super.finalize();  
113.         } catch (Throwable e) {  
114.             // TODO Auto-generated catch block  
115.             e.printStackTrace();  
116.         }  
117.     }  
118.     private native long CompressBegin(int width,int height);  
119.     private native int CompressBuffer(long encoder, int type,byte[] in, int insize,byte[] out);  
120.     private native int CompressEnd(long encoder);  
121.     @Override  
122.     public void onPreviewFrame(byte[] data, Camera camera) {      
123.           
124.         int result=CompressBuffer(encoder, -1, data, data.length,h264Buff);  
125.         try {  
126.             if (result>0)  
127.                 raf.write(h264Buff, 0, result);  
128.         } catch (Exception ex) {  
129.             Log.v("System.out", ex.toString());  
130.         }  
131.     }  
132.       
133. }  

import java.io.File; import java.io.RandomAccessFile; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.content.res.Configuration; import android.os.Bundle; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.Window; import android.view.WindowManager; import android.view.SurfaceHolder.Callback; import android.graphics.PixelFormat; import android.hardware.Camera; public class AndroidVideo extends Activity implements Callback, Camera.PictureCallback { private SurfaceView mSurfaceView = null; private SurfaceHolder mSurfaceHolder = null; private Camera mCamera = null; private boolean mPreviewRunning = false; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getWindow().setFormat(PixelFormat.TRANSLUCENT); requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.camera); mSurfaceView = (SurfaceView) this.findViewById(R.id.surface_camera); mSurfaceHolder = mSurfaceView.getHolder(); mSurfaceHolder.addCallback(this); mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } @Override public void onPictureTaken(byte[] data, Camera camera) { } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { if (mPreviewRunning) { mCamera.stopPreview(); } Camera.Parameters p = mCamera.getParameters(); p.setPreviewSize(352, 288); mCamera.setPreviewCallback(new H264Encoder(352, 288)); mCamera.setParameters(p); try { mCamera.setPreviewDisplay(holder); } catch (Exception ex) { } mCamera.startPreview(); mPreviewRunning = true; } @Override public void surfaceCreated(SurfaceHolder holder) { mCamera = Camera.open(); } @Override public void surfaceDestroyed(SurfaceHolder holder) { if (mCamera != null) { mCamera.setPreviewCallback(null); mCamera.stopPreview(); mPreviewRunning = false; mCamera.release(); mCamera = null; } } public void onConfigurationChanged(Configuration newConfig) { try { super.onConfigurationChanged(newConfig); if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) { } else if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) { } } catch (Exception ex) { } } } class H264Encoder implements Camera.PreviewCallback { long encoder=0; RandomAccessFile raf=null; byte[] h264Buff =null; static { System.loadLibrary("H264Android"); } private H264Encoder(){}; public H264Encoder(int width, int height) { encoder = CompressBegin(width, height); h264Buff = new byte[width * height *8]; try { File file = new File("/sdcard/camera.h264"); raf = new RandomAccessFile(file, "rw"); } catch (Exception ex) { Log.v("System.out", ex.toString()); } }; protected void finalize() { CompressEnd(encoder); if (null != raf) { try { raf.close(); } catch (Exception ex) { Log.v("System.out", ex.toString()); } } try { super.finalize(); } catch (Throwable e) { // TODO Auto-generated catch block e.printStackTrace(); } } private native long CompressBegin(int width,int height); private native int CompressBuffer(long encoder, int type,byte[] in, int insize,byte[] out); private native int CompressEnd(long encoder); @Override public void onPreviewFrame(byte[] data, Camera camera) { int result=CompressBuffer(encoder, -1, data, data.length,h264Buff); try { if (result>0) raf.write(h264Buff, 0, result); } catch (Exception ex) { Log.v("System.out", ex.toString()); } } }

 

 

H264Android.c

view plain print ?

1. #include <string.h>  
2. #include <jni.h>  
3. #include <stdio.h>  
4. #include <stdlib.h>  
5. #include <arpa/inet.h>  
6. #include <x264.h>  
7. #define DATA_MAX 3000000  
8. #define H264_MTU 1024  
9. typedef struct  
10. {  
11.     x264_param_t * param;  
12.     x264_t *handle;  
13.     x264_picture_t * picture;  
14.     x264_nal_t  *nal;  
15. } Encoder;  
16. jlong Java_h264_com_H264Encoder_CompressBegin(JNIEnv* env, jobject thiz,  
17.         jint width, jint height) {  
18.     Encoder * en = (Encoder *) malloc(sizeof(Encoder));  
19.     en->param = (x264_param_t *) malloc(sizeof(x264_param_t));  
20.     en->picture = (x264_param_t *) malloc(sizeof(x264_picture_t));  
21.     x264_param_default(en->param); //set default param  
22.     //en->param->rc.i_rc_method = X264_RC_CQP;  
23.     en->param->i_log_level = X264_LOG_NONE;  
24.     en->param->i_width = width; //set frame width  
25.     en->param->i_height = height; //set frame height  
26.     en->param->rc.i_lookahead =0;  
27.     en->param->i_bframe=0;  
28.     en->param->i_fps_num =5;  
29.     en->param->i_fps_den = 1;  
30.     if ((en->handle = x264_encoder_open(en->param)) == 0) {  
31.         return 0;  
32.     }  
33.     /* Create a new pic */  
34.     x264_picture_alloc(en->picture, X264_CSP_I420, en->param->i_width,  
35.             en->param->i_height);  
36.     return (jlong) en;  
37. }  
38. jint Java_h264_com_H264Encoder_CompressEnd(JNIEnv* env, jobject thiz,jlong handle)  
39. {  
40.     Encoder * en = (Encoder *) handle;  
41.     if(en->picture)  
42.     {  
43.         x264_picture_clean(en->picture);  
44.         free(en->picture);  
45.         en->picture  = 0;  
46.     }  
47.     if(en->param)  
48.     {  
49.         free(en->param);  
50.         en->param=0;  
51.     }  
52.     if(en->handle)  
53.     {  
54.         x264_encoder_close(en->handle);  
55.     }  
56.     free(en);  
57.     return 0;  
58. }  
59. jint Java_h264_com_H264Encoder_CompressBuffer(JNIEnv* env, jobject thiz,jlong handle,jint type,jbyteArray in, jint insize,jbyteArray out)  
60. {  
61.     Encoder * en = (Encoder *) handle;  
62.     x264_picture_t pic_out;  
63.     int i_data=0;  
64.     int nNal=-1;  
65.     int result=0;  
66.     int i=0,j=0;  
67.     int nPix=0;  
68.     jbyte * Buf = (jbyte*)(*env)->GetByteArrayElements(env, in, 0);  
69.     jbyte * h264Buf = (jbyte*)(*env)->GetByteArrayElements(env, out, 0);  
70.     unsigned char * pTmpOut = h264Buf;  
71.     int nPicSize=en->param->i_width*en->param->i_height;  
72.     /* 
73.     Y数据全部从在一块，UV数据使用interleave方式存储 
74.     YYYY 
75.     YYYY 
76.     UVUV 
77.      */  
78.     jbyte * y=en->picture->img.plane[0];  
79.     jbyte * v=en->picture->img.plane[1];  
80.     jbyte * u=en->picture->img.plane[2];  
81.     memcpy(en->picture->img.plane[0],Buf,nPicSize);  
82.     for (i=0;i<nPicSize/4;i++)  
83.     {  
84.         *(u+i)=*(Buf+nPicSize+i*2);  
85.         *(v+i)=*(Buf+nPicSize+i*2+1);  
86.     }  
87.     switch (type)  
88.     {  
89.     case 0:  
90.         en->picture->i_type = X264_TYPE_P;  
91.         break;  
92.     case 1:  
93.         en->picture->i_type = X264_TYPE_IDR;  
94.         break;  
95.     case 2:  
96.         en->picture->i_type = X264_TYPE_I;  
97.         break;  
98.     default:  
99.         en->picture->i_type = X264_TYPE_AUTO;  
100.         break;  
101.     }  
102.     if( x264_encoder_encode( en->handle, &(en->nal), &nNal, en->picture ,&pic_out) < 0 )  
103.     {  
104.         return -1;  
105.     }  
106.     for (i = 0; i < nNal; i++){  
107.           memcpy(pTmpOut, en->nal[i].p_payload, en->nal[i].i_payload);  
108.           pTmpOut += en->nal[i].i_payload;  
109.           result+=en->nal[i].i_payload;  
110.     }  
111.     return result;  
112. }