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docs: Gram and nit fixes for part-meta.txt

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Reynaldo H. Verdejo Pinochet 2013-10-21 18:01:21 -07:00
parent 8a7ad85b23
commit 941cfd14d5
1 changed files with 6 additions and 6 deletions
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12
docs/design/part-meta.txt
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@ -3,8 +3,8 @@ GstMeta
This document describes the design for arbitrary per-buffer metadata. This document describes the design for arbitrary per-buffer metadata.
Buffer metadata typically describes the lowlevel properties of the buffer Buffer metadata typically describes the low level properties of the buffer
content. These properties are typically not negotiated with caps but they are content. These properties are commonly not negotiated with caps but they are
negotiated in the bufferpools. negotiated in the bufferpools.
Some examples of metadata: Some examples of metadata:
@ -49,7 +49,7 @@ Use cases
Pan and crop information can be added to the buffer data when the downstream Pan and crop information can be added to the buffer data when the downstream
element can understand and use this metadata. An imagesink can, for example, element can understand and use this metadata. An imagesink can, for example,
use the pan and cropping formation when it blits the image on the screen use the pan and cropping information when blitting the image on the screen
with little overhead. with little overhead.
@ -112,7 +112,7 @@ GstMeta derived structures define the API of the metadata. The API can consist o
fields and/or methods. It is possible to have different implementations for the fields and/or methods. It is possible to have different implementations for the
same GstMeta structure. same GstMeta structure.
The implementation of the GstMeta api would typically add more fields to the The implementation of the GstMeta API would typically add more fields to the
public structure that allow it to implement the API. public structure that allow it to implement the API.
GstMetaInfo will point to more information about the metadata and looks like this: GstMetaInfo will point to more information about the metadata and looks like this:
@ -127,7 +127,7 @@ GstMetaInfo will point to more information about the metadata and looks like thi
GstMetaTransformFunction transform_func; GstMetaTransformFunction transform_func;
}; };
api will contain a GType of the metadata api. A repository of registered MetaInfo api will contain a GType of the metadata API. A repository of registered MetaInfo
will be maintained by the core. We will register some common metadata structures will be maintained by the core. We will register some common metadata structures
in core and some media specific info for audio/video/text in -base. Plugins can in core and some media specific info for audio/video/text in -base. Plugins can
register additional custom metadata. register additional custom metadata.
@ -371,7 +371,7 @@ Compatibility
~~~~~~~~~~~~~ ~~~~~~~~~~~~~
We need to make sure that elements exchange metadata that they both understand, We need to make sure that elements exchange metadata that they both understand,
This is particulary important when the metadata describes the data layout in This is particularly important when the metadata describes the data layout in
memory (such as strides). memory (such as strides).
The ALLOCATION query is used to let upstream know what metadata we can suport. The ALLOCATION query is used to let upstream know what metadata we can suport.