MT#55283 fix possible off-by-one

Change-Id: Iadf2e9be28bb3a33043e3cd811daacd17579be3f

recording-daemon/stream.c

@@ -138,14 +138,19 @@ void stream_open(metafile_t *mf, unsigned long id, char *name) {
 	epoll_add(stream->fd, EPOLLIN, &stream->handler);
 }
 
-void stream_details(metafile_t *mf, unsigned long id, unsigned int tag, unsigned int media_sdp_id, unsigned int channel_slot) {
+void stream_details(metafile_t *mf, unsigned long id, unsigned int tag, unsigned int media_sdp_id,
+		unsigned int channel_slot)
+{
 	stream_t *stream = stream_get(mf, id);
 	stream->tag = tag;
 	stream->media_sdp_id = media_sdp_id;
-	if(channel_slot > mix_num_inputs) {
-		ilog(LOG_ERR, "Channel slot %u is greater than the maximum number of inputs %u, setting to %u", channel_slot, mix_num_inputs, mix_num_inputs);
+	if (channel_slot >= mix_num_inputs) {
+		stream->channel_slot = channel_slot % mix_num_inputs;
+		ilog(LOG_ERR, "Channel slot %u is greater than the maximum number of inputs %u, setting to %u",
+				channel_slot, mix_num_inputs, stream->channel_slot);
 	}
-	stream->channel_slot = channel_slot > mix_num_inputs ? mix_num_inputs : channel_slot;
+	else
+		stream->channel_slot = channel_slot;
 }
 
 void stream_forwarding_on(metafile_t *mf, unsigned long id, unsigned int on) {