移植x264到Android系统,将x264移植到Android-优快云博客

在~/workspace/VideoQT/目录下，新建jni目录，在jni目录下，新建libx264目录，在libx264目录下，新建include和lib目录。将~/bysj/x264-snapshot-20131228-2245/目录下的x264.h，x264_config.h拷贝到include目录下，将libx264.a拷贝到lib目录下。在jni目录下，新建Android.mk文件，其脚本程序为：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_C_INCLUDES +=$(LOCAL_PATH)/libx264/include

LOCAL_MODULE := x264jni

LOCAL_SRC_FILES := VideoQianru.c

#LOCAL_LDLIBS := $(LOCAL_PATH)/libx264.a

LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -llog -lgcc

LOCAL_LDFLAGS += $(LOCAL_PATH)/libx264/lib/libx264.a

#LOCAL_LDLIBS += $(LOCAL_PATH)/libx264.a

#LOCAL_LDLIBS := -L$(SYSROOT)/usr/lib -lgcc

include $(BUILD_SHARED_LIBRARY)

在jni目录下，新建文件VideoQianru.c文件，写jni程序，链接JAVA与C层。然后，终端到jni目录，输入ndk-build,完了之后，就会在VideoQT/libs/armeabi/目录下生成libx264jni.so文件。如图：

VideoQianru.C文件的代码为

#include

typedef struct

{

x264_param_t * param;

x264_t *handle;

x264_picture_t * picture;

x264_nal_t *nal;

} Encoder;

jlong Java_com_videoqt_H264Encoder_EncodeBegin(JNIEnv* env, jobject thiz,

jint width, jint height) {

// int i=0;

// static int j=0;

static hua_k=0;

Encoder * en = (Encoder *) malloc(sizeof(Encoder));

//FILE *hua_fp=fopen("/sdcard/x264H264Androidx264.txt","w+");

//fprintf(hua_fp,"hua_k=%d,Java_h264_com_H264Encoder_CompressBegin2014-02-19:1\n",hua_k);

hua_k++;

//fflush(hua_fp);

en->param = (x264_param_t *) malloc(sizeof(x264_param_t));

en->picture = (x264_param_t *) malloc(sizeof(x264_picture_t));

//x264_param_default(en->param); //set default param 浣跨敤//by hgl

x264_param_default(en->param); //set default param by other person

//en->param->rc.i_rc_method = X264_RC_CQP;

//x264_param_default_preset(en->param, "fast", "zerolatency");

x264_param_apply_profile(en->param,"baseline");

en->param->i_log_level = X264_LOG_NONE;

en->param->i_width = width; //set frame width

en->param->i_height = height; //set frame height

en->param->rc.i_lookahead =0;

//en->param->rc.f_rf_constant=25;

//en->param->i_level_idc=12;

en->param->ref=16;

//en->param->i_frame_total=300;

//en->param->rc.i_rc_method = X264_RC_CRF;

/en->param.rc.i_vbv_max_bitrate=(int)((m_bitRate*1.2)/1000) ;

en->param.rc.i_bitrate = (int)m_bitRate/1000; ///*from here add by hgl 2013-12-31 10:06*/

en->param->i_csp=X264_CSP_I420;

en->param->i_frame_reference=1;

//en->param->i_threads=1;

//en->param->b_intra_refresh=1;

//en->param->i_bframe=0;//0

//en->param->b_annexb=1;

//en->param->b_cabac=0;//0

//en->param->i_cabac_init_idc=-1;//-1

//if(i<1000){

//en->param->hua_level[0]=-255;

//i++;

//fprintf(hua_fp,"绗?d娆★紝%d\n",j,en->param->hua_level[0]) ;

//j++;

//}

//en->param->rc.b_cbr=1;

en->param->i_fps_num =25;

en->param->i_fps_den = 1;

//en-> param->i_keyint_max =25;

//en->param->i_fps_num =5 ;

/*to here add by hgl 2013-12-31 10:06*/

//en->param->b_open_gop = 1;

//en->param->i_fps_den = 1;

//by hgl from

//if ((en->handle = x264_encoder_open(en->param)) != 0) {

//for(i=0;i<1000;i++){

//fprintf(hua_fp,"绗?d娆★紝%d\n",j,en->param->hua_level[0]) ;

// }

//j++;

//}

//else{

// return 0;

//}

//by hgl to

if ((en->handle = x264_encoder_open(en->param)) == 0) {

return 0;

}

/* Create a new pic */

x264_picture_alloc(en->picture, X264_CSP_I420, en->param->i_width,

en->param->i_height);

return (jlong) en;

}

jint Java_com_videoqt_H264Encoder_EncodeEnd(JNIEnv* env, jobject thiz,jlong handle)

{

Encoder * en = (Encoder *) handle;

if(en->picture)

{

x264_picture_clean(en->picture);

free(en->picture);

en->picture = 0;

}

if(en->param)

{

free(en->param);

en->param=0;

}

if(en->handle)

{

x264_encoder_close(en->handle);

}

free(en);

return 0;

}

jint Java_com_videoqt_H264Encoder_EncodeContinue(JNIEnv* env, jobject thiz,jlong handle,jint type,jbyteArray in, jint insize,jbyteArray out)

{

Encoder * en = (Encoder *) handle;

x264_picture_t pic_out;

int i_data=0;

int nNal=-1;

int result=0;

int i=0,j=0;

int nPix=0;

jbyte * Buf = (jbyte*)(*env)->GetByteArrayElements(env, in, 0);

jbyte * h264Buf = (jbyte*)(*env)->GetByteArrayElements(env, out, 0);

unsigned char * pTmpOut = h264Buf;

int nPicSize=en->param->i_width*en->param->i_height;

jbyte * y=en->picture->img.plane[0];

jbyte * v=en->picture->img.plane[1];

jbyte * u=en->picture->img.plane[2];

memcpy(en->picture->img.plane[0],Buf,nPicSize);

for (i=0;i

{

*(u+i)=*(Buf+nPicSize+i*2);

*(v+i)=*(Buf+nPicSize+i*2+1);

}

switch (type)

{

case 0:

en->picture->i_type = X264_TYPE_P;

break;

case 1:

en->picture->i_type = X264_TYPE_IDR;

break;

case 2:

en->picture->i_type = X264_TYPE_I;

break;

default:

en->picture->i_type = X264_TYPE_AUTO;

break;

}

if( x264_encoder_encode( en->handle, &(en->nal), &nNal, en->picture ,&pic_out) < 0 )

{

return -1;

}

for (i = 0; i < nNal; i++){

memcpy(pTmpOut, en->nal[i].p_payload, en->nal[i].i_payload);

pTmpOut += en->nal[i].i_payload;

result+=en->nal[i].i_payload;

}

return result;

}