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api update

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Original commit message from CVS:
api update
This commit is contained in:
Thomas Vander Stichele 2004-06-11 15:19:57 +00:00
parent e5c9a61a6b
commit 4bd086921c
1 changed files with 23 additions and 38 deletions
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docs/random/gdp
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@ -1,40 +1,25 @@
GStreamer data protocol
Intended to wrap GstData objects in a line protocol for use with
pipe/network elements.
IDEAS
-----
* for transporting buffers, have a function that creates a header for
a given buffer to be written before the buffer. This way, you don't lose
Intended to wrap GstData objects in a line protocol for use with
pipe / network elements.
IDEAS-- -- -*for transporting buffers, have a function that creates a header for a given buffer to be written before the buffer.This way, you don 't lose
time creating a GDP buffer from the buffer
* allow for CRC'ing of the GstBuffer, optionally
* have a version number of the protocol
* optimizing the header for size is not useful since the GstData structure
already contains more than 32 bytes anyway, making up half the header size
PROTOCOL
--------
* 1 byte GDP major version (0)
* 1 byte GDP minor version (1)
* 1 byte GDP flags
* 1 byte GDP data type
1 for buffer, 2 caps, 65+ for events
* 4 byte length of "payload"
* 8 byte timestamp of buffer/event
* 8 byte duration of buffer
* 8 byte offset
* 8 byte offset_end
* 2 byte buffer data flags
* 14 byte future extension (ABI padding)
* 2 byte optional header crc
* 2 byte optional payload crc
* (length) payload
header: 60 bytes
PROTOCOL CHANGELOG
------------------
0.1: added two bytes for buffer flags
all numbers use network byte ordering.
* allow for CRC' ing of the GstBuffer, optionally * have a version number of the protocol * optimizing the header for size is not useful since the GstData structure
already contains more than 32 bytes anyway, making up half the header size PROTOCOL-- -- ----*1 byte GDP major
version (0)
*1 byte GDP minor version (1)
* 1 byte GDP flags
* 1 byte GDP data type
1 for buffer, 2 caps, 65 + for events
* 4 byte length of "payload"
* 8 byte timestamp of buffer / event
* 8 byte duration of buffer
* 8 byte offset
* 8 byte offset_end
* 2 byte buffer data flags * 14 byte future extension (ABI padding)
*2 byte optional header crc
* 2 byte optional payload crc
* (length) payload
header:60 bytes
PROTOCOL CHANGELOG-- --
--------------0.1:added two bytes for buffer flags all numbers use
network byte ordering.