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/*
* Copyright (c) 2001-2003, Eric M. Johnston <emj@postal.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Eric M. Johnston.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: olympus.c,v 1.17 2004/12/23 20:38:52 ejohnst Exp $
*/
/*
* Exif tag definitions for Olympus maker notes.
* XXX Support here is somewhat mediocre -- my example image doesn't seem
* to have proper values for most tags.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "makers.h"
/* Macro mode. */
static struct descrip olympus_macro[] = {
{ 0, "Normal" },
{ 1, "Macro" },
{ -1, "Unknown" },
};
/* Quality. */
static struct descrip olympus_quality[] = {
{ 1, "SQ" },
{ 2, "HQ" },
{ 3, "SHQ" },
{ -1, "Unknown" },
};
/* Maker note IFD tags. */
static struct exiftag olympus_tags[] = {
{ 0x0200, TIFF_LONG, 3, ED_UNK, "OlympusShootMode",
"Shooting Mode", NULL },
{ 0x0201, TIFF_SHORT, 1, ED_IMG, "OlympusQuality",
"Compression Setting", olympus_quality },
{ 0x0202, TIFF_SHORT, 1, ED_IMG, "OlympusMacroMode",
"Macro Mode", olympus_macro },
{ 0x0204, TIFF_RTNL, 1, ED_UNK, "OlympusDigiZoom",
"Digital Zoom", NULL },
{ 0x0207, TIFF_ASCII, 5, ED_UNK, "FirmwareVer",
"Firmware Version", NULL },
{ 0x0208, TIFF_ASCII, 52, ED_UNK, "OlympusPicInfo",
"Picture Info", NULL },
{ 0x0209, TIFF_UNKN, 32, ED_UNK, "OlympusCameraID",
"Camera ID", NULL },
{ 0xffff, TIFF_UNKN, 0, ED_UNK, "Unknown",
"Olympus Unknown", NULL },
};
/*
* Process Olympus maker note tags.
*/
void
olympus_prop(struct exifprop *prop, struct exiftags *t)
{
u_int32_t a, b;
unsigned char *offset;
struct exifprop *aprop;
switch (prop->tag) {
/* Various image data. */
case 0x0200:
offset = t->mkrmd.btiff + prop->value;
/*
* XXX Would be helpful to test this with a panoramic.
* According to Peter Esherick these values are unsigned
* longs; however, it appears they may be shorts. Need to
* experiment.
*/
/* Picture taking mode. */
aprop = childprop(prop);
aprop->value = exif4byte(offset, t->mkrmd.order);
aprop->name = "OlympusPicMode";
aprop->descr = "Picture Mode";
aprop->lvl = ED_UNK;
/* Sequence number. */
aprop = childprop(prop);
aprop->value = exif4byte(offset + 4, t->mkrmd.order);
aprop->name = "OlympusSeqNum";
aprop->descr = "Sequence Number";
aprop->lvl = ED_UNK;
/* Panorama direction. */
aprop = childprop(prop);
aprop->value = exif4byte(offset + 8, t->mkrmd.order);
aprop->name = "OlympusPanDir";
aprop->descr = "Panoramic Direction";
aprop->lvl = ED_UNK;
break;
/* Digital zoom. */
case 0x0204:
a = exif4byte(t->mkrmd.btiff + prop->value, t->mkrmd.order);
b = exif4byte(t->mkrmd.btiff + prop->value + 4, t->mkrmd.order);
if (a == b)
snprintf(prop->str, 31, "None");
else
snprintf(prop->str, 31, "x%.1f", (float)a / (float)b);
break;
/* Image number. */
case 0x0008:
exifstralloc(&prop->str, 32);
snprintf(prop->str, 31, "%03d-%04d", prop->value / 10000,
prop->value % 10000);
break;
}
}
/*
* Try to read an Olympus maker note IFD.
*/
struct ifd *
olympus_ifd(u_int32_t offset, struct tiffmeta *md)
{
struct ifd *myifd;
/*
* Seems that Olympus maker notes start with an ID string. Therefore,
* try reading the IFD starting at offset + 8 ("OLYMP" + 3).
*/
if (!strcmp((const char *)(md->btiff + offset), "OLYMP"))
readifd(offset + strlen("OLYMP") + 3, &myifd, olympus_tags, md);
else
readifd(offset, &myifd, olympus_tags, md);
return (myifd);
}
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