From 8737a930b5227c0761c571e9669c14d2a020b21c Mon Sep 17 00:00:00 2001
From: Linus Nielsen Feltzing <linus@haxx.se>
Date: Tue, 4 Nov 2003 00:19:51 +0000
Subject: Patch #816310 by Lee Pilgrim, a VU meter plugin

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4010 a1c6a512-1295-4272-9138-f99709370657
---
 apps/plugins/vu_meter.c | 113 ++++++++++++++++++++++++++++++++++++++++++++++++
 docs/CREDITS            |   2 +
 2 files changed, 115 insertions(+)
 create mode 100644 apps/plugins/vu_meter.c

diff --git a/apps/plugins/vu_meter.c b/apps/plugins/vu_meter.c
new file mode 100644
index 0000000000..e7e8d33ad8
--- /dev/null
+++ b/apps/plugins/vu_meter.c
@@ -0,0 +1,113 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2003 Lee Pilgrim
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ **************************************************************************/
+#ifndef SIMULATOR      /* The simulator dosen't have a MAS */
+#include "plugin.h"
+
+#ifdef HAVE_LCD_BITMAP
+
+static struct plugin_api* rb;
+
+enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
+{
+    TEST_PLUGIN_API(api);
+    (void) parameter;
+    rb = api;
+
+    /*
+       I hope to make (left/right)_needle_top_y change some day (because it looks
+       like it is stretching) so that is why it is a int and not a #define.
+    */
+    #define LEFT_NEEDLE_BOTTOM_X 28
+    #define LEFT_NEEDLE_BOTTOM_Y 53
+    int left_needle_top_x;
+    int left_needle_top_y = 18;
+
+    #define RIGHT_NEEDLE_BOTTOM_X 84
+    #define RIGHT_NEEDLE_BOTTOM_Y 53
+    int right_needle_top_x;
+    int right_needle_top_y = 18;
+
+    while (!PLUGIN_OK)
+    {
+        /* These are to define how far the tip of the needles can go to the
+           left and right. The names are a bit confusing. The LEFT/RIGHT tells
+           which needle it is for, and the L/R at the end tells which side
+           of the needle. */
+        #define MAX_LEFT_L 2
+        #define MAX_LEFT_R 55
+        #define MAX_RIGHT_L 57
+        #define MAX_RIGHT_R 111
+
+        #define MAX_PEAK 0x8FFF
+
+        left_needle_top_x =
+            (rb->mas_codec_readreg(0xC) *
+             (MAX_LEFT_R - MAX_LEFT_L) / MAX_PEAK) + MAX_LEFT_L;
+        
+        right_needle_top_x =
+            (rb->mas_codec_readreg(0xD) *
+             (MAX_RIGHT_R - MAX_RIGHT_L) / MAX_PEAK) + MAX_RIGHT_L;
+
+        /* Time to draw all of the display stuff!
+           Could I move some of these out of the loop so they don't have to
+           be re-drawn everytime, but still be displayed, or would that
+           improve performance any at all? */
+        rb->lcd_clear_display();
+
+        rb->lcd_drawline(LEFT_NEEDLE_BOTTOM_X, LEFT_NEEDLE_BOTTOM_Y,
+                         left_needle_top_x, left_needle_top_y);
+        rb->lcd_drawline(RIGHT_NEEDLE_BOTTOM_X, RIGHT_NEEDLE_BOTTOM_Y,
+                         right_needle_top_x, right_needle_top_y);
+
+        rb->lcd_setfont(FONT_SYSFIXED);
+        rb->lcd_putsxy(30, 1, "VU Meter");
+
+        /* The first is the line under "VU Meter" and the second is under
+           the needles. */
+        rb->lcd_drawline(30, 9, 77, 9);
+        rb->lcd_drawline(1, 53, 112, 53);
+
+        /* These are the needle "covers" - we're going for that
+           "old fasioned" look */
+
+        /* The left needle cover - organized from the top line to the bottom */
+        rb->lcd_drawline(27, 48, 29, 48);
+        rb->lcd_drawline(25, 49, 31, 49);
+        rb->lcd_drawline(23, 50, 33, 50);
+        rb->lcd_drawline(22, 51, 34, 51);
+        rb->lcd_drawline(22, 52, 34, 52);
+
+        /* The right needle cover - organized from the top line to
+           the bottom */
+        rb->lcd_drawline(83, 48, 85, 48);
+        rb->lcd_drawline(81, 49, 87, 49);
+        rb->lcd_drawline(79, 50, 89, 50);
+        rb->lcd_drawline(78, 51, 90, 51);
+        rb->lcd_drawline(78, 52, 90, 52);
+
+        rb->lcd_update();
+
+        switch (rb->button_get(false))
+        {
+            case BUTTON_OFF:
+                return false;
+        }
+    }
+}
+#endif /* HAVE_LCD_BITMAP */
+#endif /* #ifndef SIMULATOR */
diff --git a/docs/CREDITS b/docs/CREDITS
index 8d69d714c4..59bd29f1d1 100644
--- a/docs/CREDITS
+++ b/docs/CREDITS
@@ -78,3 +78,5 @@ Pierre Delore
 Huw Smith
 Garrett Derner
 Barry McIntosh
+Leslie Donaldson
+Lee Pilgrim
-- 
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