From c33209e1b982a8210bd66af4a6cb8408661a3a3a Mon Sep 17 00:00:00 2001
From: Maurus Cuelenaere <mcuelenaere@gmail.com>
Date: Sat, 7 Feb 2009 13:52:03 +0000
Subject: Add optional logf display helper function for bootloaders

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19938 a1c6a512-1295-4272-9138-f99709370657
---
 bootloader/common.c | 84 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 bootloader/common.h |  3 ++
 2 files changed, 87 insertions(+)

diff --git a/bootloader/common.c b/bootloader/common.c
index a2dd35f3a6..3c4e67abbe 100644
--- a/bootloader/common.c
+++ b/bootloader/common.c
@@ -30,6 +30,10 @@
 #include "power.h"
 #include "kernel.h"
 #include "config.h"
+#include "logf.h"
+#include "button.h"
+#include "string.h"
+#include "usb.h"
 
 /* TODO: Other bootloaders need to be adjusted to set this variable to true
    on a button press - currently only the ipod, H10 and Sansa versions do. */
@@ -238,3 +242,83 @@ int dbg_ports(void)
 void mpeg_stop(void)
 {
 }
+
+#ifdef ROCKBOX_HAS_LOGF /* Logf display helper for the bootloader */
+
+#define LINES   (LCD_HEIGHT/SYSFONT_HEIGHT)
+#define COLUMNS ((LCD_WIDTH/SYSFONT_WIDTH) > MAX_LOGF_ENTRY ? \
+                            MAX_LOGF_ENTRY : (LCD_WIDTH/SYSFONT_WIDTH))
+
+#ifdef ONDA_VX747
+#define LOGF_UP     BUTTON_VOL_UP
+#define LOGF_DOWN   BUTTON_VOL_DOWN
+#define LOGF_CLEAR  BUTTON_MENU
+#else
+#warning No keymap defined for this target
+#endif
+
+void display_logf(void) /* Doesn't return! */
+{
+    int i, index, button, user_index=0;
+#ifdef HAVE_TOUCHSCREEN
+    int touch, prev_y=0;
+#endif
+    char buffer[COLUMNS+1];
+    
+    while(1)
+    {
+        index = logfindex + user_index;
+        
+        lcd_clear_display();
+        for(i = LINES-1; i>=0; i--)
+        {
+            if(--index < 0)
+            {
+                if(logfwrap)
+                    index = MAX_LOGF_LINES-1;
+                else
+                    break; /* done */
+            }
+            
+            memcpy(buffer, logfbuffer[index], COLUMNS);
+            
+            if (logfbuffer[index][MAX_LOGF_ENTRY] == LOGF_TERMINATE_CONTINUE_LINE)
+                buffer[MAX_LOGF_ENTRY-1] = '>';
+            else if (logfbuffer[index][MAX_LOGF_ENTRY] == LOGF_TERMINATE_MULTI_LINE)
+                buffer[MAX_LOGF_ENTRY-1] = '\0';
+            
+            buffer[COLUMNS] = '\0';
+            
+            lcd_puts(0, i, buffer);
+        }
+        
+        button = button_get(false);
+        if(button == SYS_USB_CONNECTED)
+            usb_acknowledge(SYS_USB_CONNECTED_ACK);
+        else if(button == SYS_USB_DISCONNECTED)
+            usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
+        else if(button & LOGF_UP)
+            user_index++;
+        else if(button & LOGF_DOWN)
+            user_index--;
+        else if(button & LOGF_CLEAR)
+            user_index = 0;
+#ifdef HAVE_TOUCHSCREEN
+        else if(button & BUTTON_TOUCH)
+        {
+            touch = button_get_data();
+            
+            if(button & BUTTON_REL)
+                prev_y = 0;
+            
+            if(prev_y != 0)
+                user_index += (prev_y - (touch & 0xFFFF)) / SYSFONT_HEIGHT;
+            prev_y = touch & 0xFFFF;
+        }
+#endif
+        
+        lcd_update();
+        sleep(HZ/16);
+    }
+}
+#endif
diff --git a/bootloader/common.h b/bootloader/common.h
index f73d6501b6..3a3e97754d 100644
--- a/bootloader/common.h
+++ b/bootloader/common.h
@@ -46,3 +46,6 @@ char *strerror(int error);
 void error(int errortype, int error);
 int load_firmware(unsigned char* buf, char* firmware, int buffer_size);
 int load_raw_firmware(unsigned char* buf, char* firmware, int buffer_size);
+#ifdef ROCKBOX_HAS_LOGF
+void display_logf(void);
+#endif
-- 
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