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hw/core: stream: Add an end-of-packet flag

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Some stream clients stream an endless stream of data while
other clients stream data in packets. Stream interfaces
usually have a way to signal the end of a packet or the
last beat of a transfer.

This adds an end-of-packet flag to the push interface.

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-Id: <20200506082513.18751-6-edgar.iglesias@gmail.com>
This commit is contained in:
Edgar E. Iglesias 2020-05-06 10:25:09 +02:00
parent e3a8926d0e
commit 51b19950ca
5 changed files with 22 additions and 13 deletions
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5
include/hw/stream.h
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@ -39,12 +39,13 @@ typedef struct StreamSlaveClass {
* @obj: Stream slave to push to
* @buf: Data to write
* @len: Maximum number of bytes to write
* @eop: End of packet flag
*/
size_t (*push)(StreamSlave *obj, unsigned char *buf, size_t len);
size_t (*push)(StreamSlave *obj, unsigned char *buf, size_t len, bool eop);
} StreamSlaveClass;
size_t
stream_push(StreamSlave *sink, uint8_t *buf, size_t len);
stream_push(StreamSlave *sink, uint8_t *buf, size_t len, bool eop);
bool
stream_can_push(StreamSlave *sink, StreamCanPushNotifyFn notify,