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docs: update design docs

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This commit is contained in:
Wim Taymans 2012-10-01 16:46:03 +02:00
parent 3f0d40b417
commit e10e4e7468
3 changed files with 12 additions and 6 deletions
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2
docs/design/part-buffer.txt
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@ -29,7 +29,7 @@ When a Buffers is writable as returned from gst_buffer_is_writable():
- metadata can be added/removed and the metadata can be changed - metadata can be added/removed and the metadata can be changed
- GstMemory blocks can be added/removed - GstMemory blocks can be added/removed
The individual memory blocks have their own refcounting and READONLY flags The individual memory blocks have their own locking and READONLY flags
that might influence their writability. that might influence their writability.
Buffers can be made writable with gst_buffer_make_writable(). This will copy the Buffers can be made writable with gst_buffer_make_writable(). This will copy the

14
docs/design/part-bufferpool.txt
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@ -132,11 +132,19 @@ Allocation query
It is also possible to configure the allocator in a provided pool. It is also possible to configure the allocator in a provided pool.
(out) "metadata", G_TYPE_ARRAY of GType (out) "metadata", G_TYPE_ARRAY of structure
- an array of metadata API types that can be accepted. - an array of metadata params that can be accepted.
struct {
GType api;
GstStructure *params;
}
Use gst_query_parse_nth_allocation_meta() to get the values.
These metadata items can be accepted by the downstream element when These metadata items can be accepted by the downstream element when
placed on buffers. placed on buffers. There is also an arbitrary GstStructure associated
with the metadata that contains metadata specific options.
Some bufferpools have options to enable metadata on the buffers Some bufferpools have options to enable metadata on the buffers
allocated by the pool. allocated by the pool.

2
docs/design/part-meta.txt
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@ -9,8 +9,6 @@ negotiated in the bufferpools.
Some examples of metadata: Some examples of metadata:
- timestamp, duration
- offset, offset_end
- interlacing information - interlacing information
- video alignment, cropping, panning information - video alignment, cropping, panning information
- extra container information such as granulepos, ... - extra container information such as granulepos, ...