c - libx264 x264_nal_encode溢出

我的libH264应用程序正在对传入的相机数据执行编码，但它会不断累积数据并减慢其执行的更多编码操作的速度。知道为什么会这样吗？

变量在程序开始时分配。我的顺序不正确吗？我怀疑我必须重新初始化某些结构，但是我找不到解决方法...

这是我在相机线程中的代码的一部分：

    int nWidth = 640;
    int nHeight = 480;

填写YUV数据

    memcpy(p264Pic->img.plane[0],pic.buffer,nWidth*nHeight);
    memcpy(p264Pic->img.plane[1],pic.buffer+nWidth*nHeight,nWidth*nHeight/4);
    memcpy(p264Pic->img.plane[2],pic.buffer+nWidth*nHeight*5/4,nWidth*nHeight/4);

填写PTS

    p264Pic->i_pts = high_resolution_timer_tick_count();

//          if( nFramsInPack % 8 == 0){
//           p264Pic->i_type = X264_TYPE_I;
//          }else{
             p264Pic->i_type = X264_TYPE_AUTO;
//      }

    if( x264_encoder_encode( p264Handle, &p264Nal, &i264Nal, p264Pic ,&pic_out) < 0 ) {
                fprintf( stderr, "x264_encoder_encode failed/n" );
    }
    printf("i264Nal %d\n", i264Nal );

    for( int i = 0; i < i264Nal; i++ )
    {
     printf( "nal pass %d\n", i );
     int i_data = 1024*32;

     printf( "nal encode\n" );

     x264_nal_encode( p264Handle, pNal, &p264Nal[i] );

     printf( "after nal encode\n" );

     int i_size = p264Nal[i].i_payload;

     printf("i_size %d\n", i_size );

     if( i_size > 0 ) {

       if ((pNal[4]&0x60)==0) {
           continue;
       }
       if (pNal[4]==0x67) {
           continue;
       }
       if (pNal[4]==0x68) {
           continue;
       }
       memmove(pNal,pNal+4,i_size-4);
       pNal+=i_size-4;
     }
     else if( i_size < 0 ) {
       fprintf( stderr,"need to increase buffer size (size=%d)/n", -i_size );
     }
    }

将数据打包到RTMP

    unsigned int nSize=pNal-szNalBuffer;
    packet.m_nBodySize=nSize+9;
    if (i264Nal>1) {
     szBodyBuffer[ 0]=0x17;
    }
    else {
     szBodyBuffer[ 0]=0x27;
    }
    put_be32((char *)szBodyBuffer+5,nSize);
    memcpy(szBodyBuffer+9,szNalBuffer,pNal-szNalBuffer);

    printf( "rtmp send packet\n" );

    RTMP_SendPacket(rtmp,&packet,0);
    newTick=high_resolution_timer_tick_count();
    packet.m_headerType = RTMP_PACKET_SIZE_MEDIUM;
    packet.m_nTimeStamp+=newTick-oldTick;
    oldTick=newTick;

这是我的应用程序的输出：

i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 0
rtmp send packet
i264Nal 4
nal pass 0
nal encode
after nal encode
i_size 36
nal pass 1
nal encode
after nal encode
i_size 15
nal pass 2
nal encode
after nal encode
i_size 632
nal pass 3
nal encode
after nal encode
i_size 7151
rtmp send packet
i264Nal 1
nal pass 0
nal encode
after nal encode
i_size 8136
rtmp send packet
i264Nal 1
nal pass 0
nal encode
after nal encode
i_size 28955
rtmp send packet
^CThe pthread schedule_do end
^Cthread is end
i264Nal 1
nal pass 0
nal encode
after nal encode

最佳答案

x264_encoder_encode(...)返回帧大小，您似乎没有考虑到这一点。您使用的是i_payload，但取决于NAL类型，这将不是正确的值。

x264_nal_encode看起来已被删除，并且x264_encoder_encode现在返回编码为最终单位的帧。返回int frame_size。

关于c - libx264 x264_nal_encode溢出，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/23550188/