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40 lines
1.1 KiB
Text
40 lines
1.1 KiB
Text
GStreamer data protocol
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Intended to wrap GstData objects in a line protocol for use with
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pipe/network elements.
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IDEAS
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-----
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* for transporting buffers, have a function that creates a header for
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a given buffer to be written before the buffer. This way, you don't lose
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time creating a GDP buffer from the buffer
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* allow for CRC'ing of the GstBuffer, optionally
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* have a version number of the protocol
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* optimizing the header for size is not useful since the GstData structure
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already contains more than 32 bytes anyway, making up half the header size
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PROTOCOL
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--------
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* 1 byte GDP major version (0)
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* 1 byte GDP minor version (1)
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* 1 byte GDP flags
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* 1 byte GDP data type
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1 for buffer, 2 caps, 65+ for events
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* 4 byte length of "payload"
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* 8 byte timestamp of buffer/event
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* 8 byte duration of buffer
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* 8 byte offset
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* 8 byte offset_end
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* 2 byte buffer data flags
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* 14 byte future extension (ABI padding)
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* 2 byte optional header crc
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* 2 byte optional payload crc
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* (length) payload
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header: 60 bytes
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PROTOCOL CHANGELOG
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------------------
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0.1: added two bytes for buffer flags
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all numbers use network byte ordering.
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