From e7ade114d656bef6ab214c5859db29eaf5f78e04 Mon Sep 17 00:00:00 2001
From: Richard Osborne <richard@xmos.com>
Date: Mon, 9 Dec 2013 18:21:50 +0000
Subject: [PATCH] Add functions for working with queues of bytes.

This is used by the IAP code.
---
 module_queue/src/queue.h  | 11 +++++++++++
 module_queue/src/queue.xc |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/module_queue/src/queue.h b/module_queue/src/queue.h
index 23e4cea5..39b57728 100644
--- a/module_queue/src/queue.h
+++ b/module_queue/src/queue.h
@@ -43,6 +43,17 @@ inline unsigned queue_pop_word(queue_t &q, unsigned array[]) {
     return array[q.rdptr++ & q.mask];
 }
 
+inline void queue_push_byte(queue_t &q, unsigned char array[], unsigned data)
+{
+    assert(!queue_is_full(q));
+    array[q.wrptr++ & q.mask] = data;
+}
+
+inline unsigned queue_pop_byte(queue_t &q, unsigned char array[]) {
+    assert(!queue_is_empty(q));
+    return array[q.rdptr++ & q.mask];
+}
+
 inline unsigned queue_items(const queue_t &q) {
     return q.wrptr - q.rdptr;
 }
diff --git a/module_queue/src/queue.xc b/module_queue/src/queue.xc
index 58c78248..c78f2b0f 100644
--- a/module_queue/src/queue.xc
+++ b/module_queue/src/queue.xc
@@ -7,5 +7,7 @@ extern inline int queue_is_empty(const queue_t &q);
 extern inline int queue_is_full(const queue_t &q);
 extern inline void queue_push_word(queue_t &q, unsigned array[], unsigned data);
 extern inline unsigned queue_pop_word(queue_t &q, unsigned array[]);
+extern inline void queue_push_byte(queue_t &q, unsigned char array[], unsigned data);
+extern inline unsigned queue_pop_byte(queue_t &q, unsigned char array[]);
 extern inline unsigned queue_space(const queue_t &q);
 extern inline unsigned queue_items(const queue_t &q);