- master clock
- Controls the rate of reference time within a graph and is used by filters
within the graph to synchronize presentation times. Provides a standard
mechanism to query the reference time, to query the physical clock time and
rate (compared to the system clock) of the owner of the master clock, and to
establish event notifications based on position changes in the master clock's
- Miniclient Driver. An OpenGL driver model in which the driver is
responsible only for handling those features that can be accelerated in
hardware, leveraging software implementation to handle the rest of the
- Memory descriptor list. In Windows NT/Windows 2000, an opaque
structure, defined by Memory Manager, that uses an array of physical page
frame numbers to describe the pages that back a virtual memory range.
- method set
- Used in Windows NT/Windows 2000 and WDM drivers to perform an action,
such as allocating memory, and to provide a way to access related actions.
Each method set has a unique identifier used to retrieve that method set and
can be fulfilled either synchronously or asynchronously. A resource method set
contains resource-specific methods for manipulating a type of resource by a
kernel-mode client, and is used in resource allocation by enumerated devices
on a bus.
- Microsoft ActiveMovie
- A cross-platform API for developers of multimedia applications that
provides a User-mode connection and Stream architecture to support
high-quality digital video, high-fidelity audio, and special effects.
- Microsoft DirectX
- A low-level API that provides User-mode media interfaces for games and
other high-performance multimedia applications. DirectX is a thin layer,
providing direct access to hardware services, and takes advantage of available
hardware accelerators and emulates accelerator services when accelerators are
- Musical Instrument Digital Interface. An industry-standard connection for
computer control of musical instruments and devices. A hardware and data
standard for communicating between hardware. Most references involve only the
data standard, which is a byte stream used for controlling musical instruments
and storing the output of such instruments.
- A hardware-specific DLL that uses a Microsoft-provided class driver to
accomplish most actions through functions call and provides only
device-specific controls. Under WDM, the minidriver registers each adapter
with the class driver, which creates the device object. The minidriver uses
the class driver's device object to make system calls.
- miniport driver
- A device-specific kernel-mode driver linked to a Windows NT/Windows
2000 or WDM port driver, usually implemented as a DLL that provides an
interface between the port driver and the system.
- Millions of instructions per second. A common measure of processor speed.
- Management information system.
- mixer class
- The class of filters that deal with manipulating controls such as volume,
treble, and so on.
- monolithic driver
- A driver that has many different classes of functionality contained in the
- See system board.
- Motion Picture Experts Group. Used when referring to one of several
standard video-compression schemes. A codec for squeezing full-screen,
VHS-quality digital video into a small data stream so it can be played from a
- Microsoft Developer Network.
- Memory technology driver. A protected-mode driver that works with
Windows 95 protected-mode PC Card software to enable form-factor cards,
such as flash memory cards. Such memory cards and their related drivers do not
provide full Plug and Play capabilities.
- multifunction device
- A piece of hardware that supports multiple, discrete functions, such as
audio, mixer, and music, on a single adapter.
- Refers to the delivery of information that combines different content
formats (motion video, audio, still images, graphics, animation, text, and so
- See filters.
- music class
- The class of filters that deal with music data, such as ZIPI or MIDI.