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Minor changes to Application Development Manual

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pfee 2019-01-29 00:17:19 +00:00 committed by Mathieu Duponchelle
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10
markdown/application-development/introduction/basics.md
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@ -25,20 +25,20 @@ great deal in the *GStreamer Plugin Writer's Guide*.
## Pads ## Pads
*Pads* are element's input and output, where you can connect other *Pads* are an element's input and output, where you can connect other
elements. They are used to negotiate links and data flow between elements. They are used to negotiate links and data flow between
elements in GStreamer. A pad can be viewed as a “plug” or “port” on an elements in GStreamer. A pad can be viewed as a “plug” or “port” on an
element where links may be made with other elements, and through which element where links may be made with other elements, and through which
data can flow to or from those elements. Pads have specific data data can flow to or from those elements. Pads have specific data
handling capabilities: a pad can restrict the type of data that flows handling capabilities: a pad can restrict the type of data that flows
through it. Links are only allowed between two pads when the allowed through it. Links are only allowed between two pads when the allowed
data types of the two pads are compatible. Data types are negotiated data types (capabilities) of the two pads are compatible. Data types are
between pads using a process called *caps negotiation*. Data types are negotiated between pads using a process called *caps negotiation*. Data
described as a `GstCaps`. types are described by `GstCaps`.
An analogy may be helpful here. A pad is similar to a plug or jack on a An analogy may be helpful here. A pad is similar to a plug or jack on a
physical device. Consider, for example, a home theater system consisting physical device. Consider, for example, a home theater system consisting
of an amplifier, a DVD player, and a (silent) video projector. Linking of an audio amplifier, a DVD player, and a (silent) video projector. Linking
the DVD player to the amplifier is allowed because both devices have the DVD player to the amplifier is allowed because both devices have
audio jacks, and linking the projector to the DVD player is allowed audio jacks, and linking the projector to the DVD player is allowed
because both devices have compatible video jacks. Links between the because both devices have compatible video jacks. Links between the

2
markdown/application-development/introduction/motivation.md
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@ -80,7 +80,7 @@ High performance is obtained by:
The core of GStreamer is essentially media-agnostic. It only knows about The core of GStreamer is essentially media-agnostic. It only knows about
bytes and blocks, and only contains basic elements. The core of bytes and blocks, and only contains basic elements. The core of
GStreamer is functional enough to even implement low-level system tools, GStreamer is even functional enough to implement low-level system tools,
like cp. like cp.
All of the media handling functionality is provided by plugins external All of the media handling functionality is provided by plugins external