av_log_format_line2  331 libavutil/log.c     av_log_format_line2(ptr, level, fmt, vl, line, line_size, print_prefix);
av_log_format_line2  355 libavutil/log.h int av_log_format_line2(void *ptr, int level, const char *fmt, va_list vl,
av_log_format_line2   32 libavutil/tests/log.c     ret = av_log_format_line2(NULL, AV_LOG_INFO, fmt, args, buffer, buffer_size, &print_prefix);