qemu-patch-raspberry4/hw/core/stream.c
Edgar E. Iglesias 51b19950ca hw/core: stream: Add an end-of-packet flag
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>
2020-05-14 13:44:35 +02:00

35 lines
801 B
C

#include "qemu/osdep.h"
#include "hw/stream.h"
#include "qemu/module.h"
size_t
stream_push(StreamSlave *sink, uint8_t *buf, size_t len, bool eop)
{
StreamSlaveClass *k = STREAM_SLAVE_GET_CLASS(sink);
return k->push(sink, buf, len, eop);
}
bool
stream_can_push(StreamSlave *sink, StreamCanPushNotifyFn notify,
void *notify_opaque)
{
StreamSlaveClass *k = STREAM_SLAVE_GET_CLASS(sink);
return k->can_push ? k->can_push(sink, notify, notify_opaque) : true;
}
static const TypeInfo stream_slave_info = {
.name = TYPE_STREAM_SLAVE,
.parent = TYPE_INTERFACE,
.class_size = sizeof(StreamSlaveClass),
};
static void stream_slave_register_types(void)
{
type_register_static(&stream_slave_info);
}
type_init(stream_slave_register_types)