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Decode iso headers properly.

This commit is contained in:
Kristian Høgsberg 2007-03-31 19:45:39 -04:00
parent 429167e36a
commit 89281b5767
1 changed files with 11 additions and 8 deletions
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19
juju/raw1394-iso.c
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@ -177,20 +177,19 @@ flush_recv_packets(raw1394handle_t handle,
end = (void *) interrupt->header + interrupt->header_length;
cycle = interrupt->cycle;
dropped = 0;
/* FIXME: compute real buffer index. */
data = handle->iso.buffer +
handle->iso.packet_tail * handle->iso.max_packet_size;
while (p < end) {
header = be32_to_cpu(*p++);
len = header >> 8;
channel = header >> 8;
tag = header >> 8;
sy = header >> 8;
len = header >> 16;
tag = (header >> 14) & 0x3;
channel = (header >> 8) & 0x3f;
sy = header & 0x0f;
printf("len=%d, channel=%d, tag=%d, sy=%d\n",
len, channel, tag, sy);
fprintf(stderr,
"header: %08x, len=%d, channel=%d, tag=%d, sy=%d, packet_tail=0x%x\n",
header, len, channel, tag, sy, handle->iso.packet_tail);
d = handle->iso.recv_handler(handle, data, len, channel,
tag, sy, cycle, dropped);
@ -199,6 +198,10 @@ flush_recv_packets(raw1394handle_t handle,
cycle++;
}
handle->iso.packet_tail += interrupt->header_length / 4;
if (handle->iso.packet_tail >= handle->iso.buf_packets)
handle->iso.packet_tail -= handle->iso.buf_packets;
queue_recv_packets(handle);
return 0;