rockbox/firmware/logf.c

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4.5 KiB
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 by Daniel Stenberg
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
/*
* logf() logs MAX_LOGF_ENTRY (29) bytes per entry in a circular buffer. Each
* logged string is space- padded for easier and faster output on screen. Just
* output MAX_LOGF_ENTRY characters on each line. MAX_LOGF_ENTRY bytes fit
* nicely on the iRiver remote LCD (128 pixels with an 8x6 pixels font).
*
* When the length of log exceeds MAX_LOGF_ENTRY bytes, dividing into the
* string of length is MAX_LOGF_ENTRY-1 bytes.
*
* logfbuffer[*]:
*
* |<- MAX_LOGF_ENTRY bytes ->|1|
* | log data area |T|
*
* T : log terminate flag
* == LOGF_TERMINATE_ONE_LINE(0x00) : log data end (one line)
* == LOGF_TERMINATE_CONTINUE_LINE(0x01) : log data continues
* == LOGF_TERMINATE_MULTI_LINE(0x02) : log data end (multi line)
*/
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include "config.h"
#include "lcd-remote.h"
#include "logf.h"
#include "serial.h"
#ifdef HAVE_USBSTACK
#include "usb_core.h"
#include "usbstack/usb_serial.h"
#endif
/* Only provide all this if asked to */
#ifdef ROCKBOX_HAS_LOGF
#ifndef __PCTOOL__
unsigned char logfbuffer[MAX_LOGF_LINES][MAX_LOGF_ENTRY+1];
int logfindex;
bool logfwrap;
#endif
#ifdef HAVE_REMOTE_LCD
static void displayremote(void)
{
/* TODO: we should have a debug option that enables/disables this! */
int w, h;
int lines;
int columns;
int i;
int index;
lcd_remote_getstringsize("A", &w, &h);
lines = LCD_REMOTE_HEIGHT/h;
columns = LCD_REMOTE_WIDTH/w;
lcd_remote_clear_display();
index = logfindex;
for(i = lines-1; i>=0; i--) {
unsigned char buffer[columns+1];
if(--index < 0) {
if(logfwrap)
index = MAX_LOGF_LINES-1;
else
break; /* done */
}
memcpy(buffer, logfbuffer[index], columns);
buffer[columns]=0;
lcd_remote_puts(0, i, buffer);
}
lcd_remote_update();
}
#else
#define displayremote()
#endif
#ifdef __PCTOOL__
void _logf(const char *format, ...)
{
char buf[1024];
va_list ap;
va_start(ap, format);
vsnprintf(buf, sizeof buf, format, ap);
printf("DEBUG: %s\n", buf);
}
#else
static void check_logfindex(void)
{
if(logfindex >= MAX_LOGF_LINES) {
/* wrap */
logfwrap = true;
logfindex = 0;
}
}
void _logf(const char *format, ...)
{
int len;
int tlen;
unsigned char buf[MAX_LOGF_ONE_LINE_SIZE];
unsigned char *ptr;
va_list ap;
bool multiline = false;
va_start(ap, format);
vsnprintf(buf, MAX_LOGF_ONE_LINE_SIZE, format, ap);
va_end(ap);
len = strlen(buf);
#if defined(HAVE_SERIAL) && !defined(SIMULATOR)
serial_tx(buf);
serial_tx("\r\n");
#endif
#ifdef USB_SERIAL
usb_serial_send(buf, len);
usb_serial_send("\r\n", 2);
#endif
tlen = 0;
check_logfindex();
while(len > MAX_LOGF_ENTRY)
{
ptr = logfbuffer[logfindex];
strncpy(ptr, buf + tlen, MAX_LOGF_ENTRY-1);
ptr[MAX_LOGF_ENTRY] = LOGF_TERMINATE_CONTINUE_LINE;
logfindex++;
check_logfindex();
len -= MAX_LOGF_ENTRY-1;
tlen += MAX_LOGF_ENTRY-1;
multiline = true;
}
ptr = logfbuffer[logfindex];
strcpy(ptr, buf + tlen);
if(len < MAX_LOGF_ENTRY)
/* pad with spaces up to the MAX_LOGF_ENTRY byte border */
memset(ptr+len, ' ', MAX_LOGF_ENTRY-len);
ptr[MAX_LOGF_ENTRY] = (multiline)?LOGF_TERMINATE_MULTI_LINE:LOGF_TERMINATE_ONE_LINE;
logfindex++; /* leave it where we write the next time */
displayremote();
}
#endif
#endif