There are 2 build errors after pull new commits 

```
/Users/apple/ios/sharp_ios_player/kxmovie/KxMovieDecoder.m:571:36: error: use of undeclared identifier 'AV_PIX_FMT_NONE'; did you mean 'PIX_FMT_NONE'?
    if (_videoCodecCtx->pix_fmt == AV_PIX_FMT_NONE)
                                   ^~~~~~~~~~~~~~~
                                   PIX_FMT_NONE
ffmpeg/libavutil/pixfmt.h:66:5: note: 'PIX_FMT_NONE' declared here
    PIX_FMT_NONE= -1,
    ^
/Users/apple/ios/sharp_ios_player/kxmovie/KxMovieDecoder.m:1098:36: error: use of undeclared identifier 'AV_PIX_FMT_YUV420P'; did you mean 'PIX_FMT_YUV420P'?
        _videoCodecCtx->pix_fmt == AV_PIX_FMT_YUV420P) {
                                   ^~~~~~~~~~~~~~~~~~
                                   PIX_FMT_YUV420P
ffmpeg/libavutil/pixfmt.h:67:5: note: 'PIX_FMT_YUV420P' declared here
    PIX_FMT_YUV420P,   ///< planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
    ^
2 errors generated.

```