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raop: fix sequence number overflow

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Wrap sequence number when we reach uint16_t's max 0xFFFF.
This commit is contained in:
Colin Leroy 2016-11-06 12:54:13 -06:00 • committed by Tanu Kaskinen
parent 81fa11e3a9
commit b95aebdb2d
3 changed files with 29 additions and 3 deletions
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17
src/modules/raop/raop-packet-buffer.c
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@ -88,13 +88,28 @@ void pa_raop_packet_buffer_reset(pa_raop_packet_buffer *pb, uint16_t seq) {
}
}
uint16_t pa_raop_packet_buffer_wrap_seq(pa_raop_packet_buffer *pb, uint16_t seq) {
int seq_shift;
pa_assert(pb);
if (seq > pb->seq)
seq_shift = pb->seq - 1;
else
seq_shift = seq;
pb->seq -= seq_shift;
return seq - seq_shift;
}
pa_memchunk *pa_raop_packet_buffer_get(pa_raop_packet_buffer *pb, uint16_t seq, const size_t size) {
pa_memchunk *packet = NULL;
size_t delta, i;
pa_assert(pb);
pa_assert(pb->packets);
pa_assert(seq > 0);
if (seq == pb->seq)
packet = &pb->packets[pb->pos];