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docs: add copy and conv function to buffer2 draft

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This commit is contained in:
Wim Taymans 2010-03-31 16:55:55 +02:00
parent ac2f2c6122
commit b181094798
1 changed files with 7 additions and 2 deletions
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9
docs/design/draft-buffer2.txt
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@ -148,9 +148,11 @@ GstBufferMetaInfo will point to more information about the metadata and looks li
GstMetaInitFunction init_func;
GstMetaFreeFunction free_func;
GstMetaCopyFunction copy_func;
GstMetaSubFunction sub_func;
GstMetaSerializeFunction serialize_func
GstMetaDeserializeFunction deserialize_func
GstMetaConvFunction conv_func;
}
Tag will contain a GQuark of the metadata name. We will be able to refer to specific
@ -167,6 +169,9 @@ We also add serialize and deserialize function for the metadata in case we need
logic for reading and writing the metadata. This is needed for GDP payloading of the
metadata.
We add a conv function to the Info structure that will be called when a buffer
should be converted to an old-style buffer for backward compatibility.
The purpose of the separate MetaInfo is to not have to carry the free/init functions in
each buffer instance but to define them globally. We still want quick access to the info
so we need to make the buffer metadata point to the info.
@ -310,8 +315,8 @@ Memory management
MetaInfo associated with the entries. Usually, this function will be NULL.
Subbufers
---------
Subbuffers
----------
Subbuffers are a first class feature of the GstBuffer.