From cd5508f16cb1cef37f8a91c76903b4aba044a285 Mon Sep 17 00:00:00 2001
From: Andreas Huggel <ahuggel@gmx.net>
Date: Sun, 3 Aug 2008 02:02:30 +0000
Subject: [PATCH] #526: Added support for preview image in a sub-IFD of the
 Nikon3 makernote.

---
 src/makernote2_int.hpp | 1 +
 src/tags.cpp           | 1 +
 src/tiffcomposite.cpp  | 3 ++-
 src/tiffimage.cpp      | 7 +++++++
 src/types.hpp          | 2 +-
 5 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/makernote2_int.hpp b/src/makernote2_int.hpp
index 9ff57045..a122d3de 100644
--- a/src/makernote2_int.hpp
+++ b/src/makernote2_int.hpp
@@ -67,6 +67,7 @@ namespace Exiv2 {
         const uint16_t canonpi   = 277; //!< Canon picture info
         const uint16_t canonpa   = 278; //!< Canon panorama
         const uint16_t pentaxmn  = 279; //!< Pentax makernote
+        const uint16_t nikon3pv  = 280; //!< Nikon3 preview sub-IFD
     }
 
 // *****************************************************************************
diff --git a/src/tags.cpp b/src/tags.cpp
index 011019d8..1013b9dd 100644
--- a/src/tags.cpp
+++ b/src/tags.cpp
@@ -101,6 +101,7 @@ namespace Exiv2 {
         { nikon1IfdId,       "Makernote", "Nikon1",       Nikon1MakerNote::tagList       },
         { nikon2IfdId,       "Makernote", "Nikon2",       Nikon2MakerNote::tagList       },
         { nikon3IfdId,       "Makernote", "Nikon3",       Nikon3MakerNote::tagList       },
+        { nikon3PvIfdId,     "Makernote", "Nikon3Preview",ExifTags::ifdTagList           },
         { olympusIfdId,      "Makernote", "Olympus",      OlympusMakerNote::tagList      },
         { panasonicIfdId,    "Makernote", "Panasonic",    PanasonicMakerNote::tagList    },
         { pentaxIfdId,       "Makernote", "Pentax",       PentaxMakerNote::tagList       },
diff --git a/src/tiffcomposite.cpp b/src/tiffcomposite.cpp
index 838085b5..70385728 100644
--- a/src/tiffcomposite.cpp
+++ b/src/tiffcomposite.cpp
@@ -98,7 +98,8 @@ namespace Exiv2 {
         { 276, "MinoltaCs7D"  },
         { 277, "CanonPi"      },
         { 278, "CanonPa"      },
-        { 279, "Pentax"       }
+        { 279, "Pentax"       },
+        { 280, "Nikon3Preview"}
     };
 
     bool TiffGroupInfo::operator==(const uint16_t& group) const
diff --git a/src/tiffimage.cpp b/src/tiffimage.cpp
index f29981b2..6c87e2d0 100644
--- a/src/tiffimage.cpp
+++ b/src/tiffimage.cpp
@@ -368,8 +368,15 @@ namespace Exiv2 {
 
         // Nikon3 makernote
         { Tag::next, Group::nikon3mn,  Group::ignr,      0x927c,    Group::exif,      newTiffDirectory },
+        {    0x0011, Group::nikon3mn,  Group::nikon3pv,  0x927c,    Group::exif,      newTiffSubIfd },
         {  Tag::all, Group::nikon3mn,  Group::nikon3mn,  0x927c,    Group::exif,      newTiffEntry },
 
+        // Nikon3 makernote preview sub-IFD
+        {    0x0201, Group::nikon3pv,  Group::nikon3pv,  0x0011,    Group::nikon3mn,  newTiffThumbData<0x0202, Group::nikon3pv> },
+        {    0x0202, Group::nikon3pv,  Group::nikon3pv,  0x0011,    Group::nikon3mn,  newTiffThumbSize<0x0201, Group::nikon3pv> },
+        { Tag::next, Group::nikon3pv,  Group::ignr,      0x0011,    Group::nikon3mn,  newTiffDirectory },
+        {  Tag::all, Group::nikon3pv,  Group::nikon3pv,  0x0011,    Group::nikon3mn,  newTiffEntry },
+
         // Panasonic makernote
         { Tag::next, Group::panamn,    Group::ignr,      0x927c,    Group::exif,      newTiffDirectory },
         {  Tag::all, Group::panamn,    Group::panamn,    0x927c,    Group::exif,      newTiffEntry },
diff --git a/src/types.hpp b/src/types.hpp
index 6714db60..2aafc91b 100644
--- a/src/types.hpp
+++ b/src/types.hpp
@@ -141,7 +141,7 @@ namespace Exiv2 {
                  fujiIfdId,
                  minoltaIfdId, minoltaCs5DIfdId, minoltaCs7DIfdId,
                  minoltaCsOldIfdId, minoltaCsNewIfdId,
-                 nikon1IfdId, nikon2IfdId, nikon3IfdId,
+                 nikon1IfdId, nikon2IfdId, nikon3IfdId, nikon3PvIfdId,
                  olympusIfdId, panasonicIfdId, pentaxIfdId, sigmaIfdId, sonyIfdId,
                  lastIfdId };