C++ 函数指针 强制类型转换

ffmpeg libavfilter/f_selectstream.c有一段代码

static int parse_definition(AVFilterContext *ctx, int nb_pads, void *filter_frame, int is_audio){......    pad.filter_frame = filter_frame......}

现在要将其改为C++，但是C++没有隐式类型转换，会报错
解决

static int parse_definition(AVFilterContext *ctx, int nb_pads, void *filter_frame, int is_audio){    typedef int (*filterframe_type)(AVFilterLink *link, AVFrame *frame);......    pad.filter_frame = (filterframe_type)filter_frame......}