From 406edc298d90173f4a81119a1280f085b216ab64 Mon Sep 17 00:00:00 2001
From: Linus Nielsen Feltzing <linus@haxx.se>
Date: Sat, 27 Jul 2002 11:24:22 +0000
Subject: Added key-release event masking

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1460 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/drivers/button.c | 45 ++++++++++++++++++++++++++++++++++++---------
 1 file changed, 36 insertions(+), 9 deletions(-)

(limited to 'firmware/drivers/button.c')

diff --git a/firmware/drivers/button.c b/firmware/drivers/button.c
index 636376b4e5..24e45886ad 100644
--- a/firmware/drivers/button.c
+++ b/firmware/drivers/button.c
@@ -36,6 +36,8 @@ struct event_queue button_queue;
 #define REPEAT_INTERVAL   4
 
 static int repeat_mask = DEFAULT_REPEAT_MASK;
+static int release_mask = DEFAULT_RELEASE_MASK;
+static int locked_mask = DEFAULT_LOCKED_MASK;
 
 static int button_read(void);
 
@@ -45,13 +47,23 @@ static void button_tick(void)
     static int count=0;
     static int lastbtn=0;
     static bool repeat=false;
+    int diff;
 
     /* only poll every X ticks */
     if ( ++tick >= POLL_FREQUENCY ) {
         bool post = false;
         int btn = button_read();
 
-        if ( btn ) {
+        if ( btn )
+        {
+            /* Find out if a key has been released */
+            diff = btn ^ lastbtn;
+            if((btn & diff) == 0)
+            {
+                if(diff & release_mask)
+                    queue_post(&button_queue, BUTTON_REL | diff, NULL);
+            }
+            
             /* normal keypress */
             if ( btn != lastbtn ) {
                 post = true;
@@ -96,7 +108,8 @@ static void button_tick(void)
             /* Report that the key has been released */
             if(lastbtn != btn)
             {
-                queue_post(&button_queue, BUTTON_REL | lastbtn, NULL);
+                if(lastbtn & release_mask)
+                    queue_post(&button_queue, BUTTON_REL | lastbtn, NULL);
             }
         }
 
@@ -118,6 +131,27 @@ int button_get(bool block)
     return BUTTON_NONE;
 }
 
+int button_set_repeat(int newmask)
+{
+    int oldmask = repeat_mask;
+    repeat_mask = newmask;
+    return oldmask;
+}
+
+int button_set_release(int newmask)
+{
+    int oldmask = release_mask;
+    release_mask = newmask;
+    return oldmask;
+}
+
+int button_set_locked(int newmask)
+{
+    int oldmask = locked_mask;
+    locked_mask = newmask;
+    return oldmask;
+}
+
 #ifdef HAVE_RECORDER_KEYPAD
 
 /* AJBR buttons are connected to the CPU as follows:
@@ -151,13 +185,6 @@ void button_init()
     tick_add_task(button_tick);
 }
 
-int button_set_repeat(int newmask)
-{
-    int oldmask = repeat_mask;
-    repeat_mask = newmask;
-    return oldmask;
-}
-
 /*
  * Get button pressed from hardware
  */
-- 
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