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CyberLink PowerDVD 5
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What Is DirectShow?
Formerly known as ActiveMovie back in the prehistoric days, Microsoft's
DirectShow is a multimedia architecture and a dramatic improvement over the
previous one known as the Media Control Interface (MCI). Because of the inherent
limitations of the 16-bit MCI, DirectShow was designed to accommodate the vast
array of new and emerging multimedia hardware and technologies that the
aforementioned could not. Based on Microsoft's Component Object Model (COM),
MCI's major headache of inconsistent interfaces is now a thing of the past when
using the multithreading and multitasking DirectShow.
DirectShow is one of the DirectX technology components which also includes
DirectDraw, DirectSound3D, DirectInput, Direct3D, Direct-Animation, DirectMusic,
etc. DirectX, a set of low-level application programming interfaces (APIs) for
creating high-performance multimedia applications with its overriding design goal
being speed, was originally designed to enhance Windows' gaming platform. But
with the advent of the DVD, DBS and a host of other technologies, today it serves as
the gateway in accessing different hardware peripherals and acting as an integral
part of Windows OS.
PowerDVD is fully compliant with DirectX technology. One of the essential
components of PowerDVD is DirectDraw, which accesses hardware directly and
thereby increases graphics speed. It gives developers a common user interface and
works in conjunction with HAL (Hardware Abstraction Layer) and HEL (Hardware
Emulation Layer). HAL allows developers to access hardware devices without
explicit knowledge of the brand's model or its details. HEL is where DirectX features
can be emulated if the device itself does not support those features.
For more information, please visit: http://www.microsoft.com/directx
.
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