Changes:

Release 0.11 (development in progress)

--------------------------------------

Major new features and improvements:

* WebP format reader/writer.

* Cineon support is re-enabled after various bug fixes.

* PSD (Adobe Photoshop) format reader.

* RLA (Wavefront) format reader/writer.

* New utility: oiiotool. This is still a work in progress, but largely

subsumes the functionality of iprocess, iinfo, iconvert, idiff.

API changes:

* Add API methods to ImageInput/ImageOutput that allow read/write of multiple

scanlines or tiles at a time.

* Change the last couple functions that took min/max pixel range

specifications to conform to our usual [begin,end) convention --

write_rectangle and to_native_rectangle.

* exif_encode, exif_decode now available as general utilities (previously

were private to the JPEG plugin).

Fixes, minor enhancements, and performance improvements:

* ImageBufAlgo new algorithms: compare, compare_Yee,

* TextureOpt: add ustring-aware versions of the decode_wrapmode utility.

* TypeDesc: allow stream << output.

* iv: raised maximum ImageCache size from 2 GB to 8 GB.

* PNM: fix but where file exceptions could go uncaught.

Developer goodies:

* ArgParse enhancements: make %! indicate a bool that's set to false if

the option is found, %@ indicates an immediate callback, allow

callbacks for bool options, option matching ignores characters after

':' in the option, wrap lines at word breaks when printing usage help.

* Generate man pages for the command-line tools.

* Strutil additions: escape_chars, unescape_chars.

* Use github.com/OpenImageIO/oiio-images project for test images that are

too big to fit in testsuite.

Release 0.10.2 (August 6, 2011)

-------------------------------

* Improve the performance of ustring constructor when highly multithread.

* Remove old out-of-date Doxygen html pages.

Release 0.10.1 (August 2, 2011)

-------------------------------

* Fix TextureSystem::get_texture_info(file,"exists") (and the equivalent for

ImageCache), it was previously incorrectly giving an error if the file

didn't exist.

* Fixed an error where we were losing the error message if ImageInput::create

failed.

* maketx: --hash is deprecated, the SHA-1 hash is always computed; the

hash takes into account upstream image changes, such as resizing; the

--filter command line argument only takes the filter name, the width

is now automatically computed.

* Add static methods to Filter classes allowing queries about the names

and vital info about all available filters.

* New Filesystem::is_regular() wraps the boost is_regular and catches

exceptions.

* iv: raise the maximum ImageCache settable in the UI from 2GB to 8GB.

* Bug fixes with per-channel data formats.

* Add Strutil::escape_chars() and unescape_chars() utility functions.

* TextureOpt: add ustring-aware versions of the decode_wrapmode() utility.

Release 0.10 (June 9 2010)

--------------------------

Major new features and improvements:

* TextureSystem: fix longstanding texture quality issues: underestimation

of anisotropic filter footprint, improved metric for determining when to

switch to bicubic filtering, better MIP level selection for non-square

images.

* maketx --filter allows you to specify the filter for resizing and

downsizing to generate MIPmap levels (this lets you choose a filter

that is better than the default "box").

* TextureSystem option "gray_to_rgb", when set to nonzero, promotes

grayscale (single channel) texture lookups to RGB (rather than using

the fill color for missing channel.

* IFF (Maya) support from Mikael Sundell.

API changes:

* TextureSystem has additional API entry points for apps that want to

retrieve an opaque texture handle and per-thread info and then pass it

back to texture lookups, saving some name resolution and per-thread

retrieval time. (The old routines that do this all automatically still

work just fine.)

* New ImageBufAlgo utilities: setNumChannels, isConstantColor, isMonochrome,

computePixelHashSHA1, transform.

Fixes, minor enhancements, and performance improvements:

* ImageCache/TextuerSystem:

- option "accept_untiled" wasn't properly recognized (0.9.1); new

attribute "accept_unmipped" (default to 1), when set to zero, will

treat any un-MIPmapped file as an error (analogous to the existing

"accept_untiled") (0.9.2);

- fix deadlock when file handles are exhausted (0.9.3);

invalidate_all() no longer closes all files unconditionally, only

the ones actually invalidated;

- fix longstanding problem where multiple threads could redundantly

open and read the same file if they need it simultaneously and it

isn't in cache already;

- get_pixels issues a single error from a corrupt file, rather than

reporting error after error on the same file.

* Texture: Fixes to make latlong environment maps more correct for OpenEXR

files, which have some particular unique conventions. (0.9.1);

bug fix to TextureOpt default initializer that could screw up texture

lookups. (0.9.1)

* maketx fixes: the -oiio command line option also enables hash generation;

resize properly if any of the dimensions change (previously only did

if ALL dimensions changed) (0.9.3); --nchannels lets you set the number

of output channels.

* Added ImageBufAlgo::transform to allow for 'flip' & 'flop' in iprocess.

(0.9.1)

* DPX: fix file reading when number of channels not equal to 3 (0.9.3);

support for endianness specification, fix lots of problems writing metadata.

* BMP: RGB-to-BGR conversion fixed, force UINT8 output; scanline size was

incorrect when copying to temporary buffers.

* JPEG: reader is more robust to corrupted files and other problems.

* JPEG-2000: support files with more than 8 bits per channel.

* Targa: properly expand 5 bit per channel to full bytes.

* Fixed incorrectly set "ResolutionUnit" and "BitsPerSample" usage in several

format plugins.

* Improved handling of file formats that allow unassociated alpha.

* iv: display non-Latin filenames properly.

* iconvert --noclobber option ensures that existing files aren't overwritten.

* iinfo: fixes to properly print subimage and mipmap statistics.

For developers / build issues:

* Fix USE_TBB macro on Windows build. (0.9.1)

* Fixes required for Windows compile in conjunction with OSL. (0.9.1)

* Removed some pointless debugging output to the console. (0.9.1)

* Fix subtle bug in convert_type utility function that was causing a slight

incorrect rounding when converting float to a signed integer type. (0.9.3)

* Fix to compile properly against Boost 1.46. (0.9.3)

* Update pugixml from 0.5 to 1.0.

* Remove boost::test and gtest as dependencies, use our own macros.

* Fixes to allow use of libtiff 4.0.

* make USE_JASPER=0 USE_FIELD3D=0 make it easy to disable Jasper and

Field3D as dependencies.

* Various fixes to make cleaner compiles with clang.

* ustring: Added find* methods that match those of std::string, expose

make_unique, is_unique, and from_unique helper functions.

* Add Filesystem::exists and Filesystem::is_directory.

Release 0.9 (Dec 9 2010, updated Feb 23, 2011)

----------------------------------------------

Major new features:

* New format plugin: DPX

* New format plugin: Cineon (currently read only) (r1599,1600,1601,1617)

* New format plugin: Ptex (currently read only) (r1655,1664).

* New format plugin: Field3D (currently read only) (r1659,1666,1669)

* Support for files that are simultaneously multi-image and where each

subimage may also be mipmapped (these concepts were previously

comingled). This mainly effects ImageInput::seek_subimage and

ImageOutput::open, as well as some minor methods of ImageCache and

ImageBuf. (r1655,1656,1664,1671)

* Support for per-channel data formats via the new ImageSpec::channelformats

vector and interpreting read_foo/write_foo format parameter of UKNOWN

as a request for the true native format. (r1674)

* Full support of TextureSystem environment() for lat-long maps.

API changes:

* Single-point texture lookup struct (TextureOpt) and additional

single-point texture lookup entry points. (r1679)

* Filter{1D,2D} class now has a destroy() method to match its create(),

and create() accepts "bspline" and "catrom" as synonyms for the

existing "b-spline" and "catmull-rom" fileters. (r1542)

* Add methods to ImageSpec to read/write an XML representation of the

ImageSpec (r1574).

* Finally put all the helper classes (ustring, TypeDesc, etc.) that were

in the main OpenImageIO namespace, as well as centralized version numbering

and custom namespace control.

* ParamList now has a method to remove attributes.

* Color handling change: color space now is a metadata string,

"oiio:ColorSpace", not 'linearity' data member of ImageSpec; remnants of

bad 'dither' ideas have been removed; "BitsPerSample" metadata has been

renamed "oiio:BitsPerSample" and several bugs have been fixed related to

it in some of the image plugins.

* Moved some ImageBuf methods into functions in imagebufalgo.h.

Fixes, minor enhancements, and performance improvements:

* OpenEXR: Allow read/write with different data formats per channel (r1674).

* SGI: add support for files with any number of channels (r1630).

* PNG: improve PNG write speed by 4x by adjusting compression tradeoffs

(r1677)

* JPEG: assume sRGB unless EXIF says otherwise (r1693); fix broken JPEG

4-channel to 3-channel conversion (r1696).

* PNM: monochrome data was output incorrectly in both binary & ascii forms;

adopt the Netbpm convention for endianness in the 16 bit case; open binary

image files in binary mode to avoid newline mangling (r1709).

* TIFF: more sensible checkpointing logic greatly reduces header rewriting.

* iinfo: add --stats option (r1618)

* iv: Now can sort the image list by file date, metadata date, name, or

file path (r1514).

* ImageCache: fixed bug that allowed the max_open_files limit to be

exceeded (r1657); raise the default IC cache size to 256 MB (r1663);

automip unmipped files even if they are tiled (r1670); fix bug wherein

an invalidated and modified file would continue to flush in subsequent

invalidations, even if the file was not modified again (r1712/0.8.8).

* New ImageBuf algorithm: computePixelStats (r1618)

* Fixes in ImageCache and ImageBuf to allow correct handling of

3D (volumetric) files. (r1659,1660)

* ImageCache fixed to ensure that multiple threads don't try to concurrently

open the same file.

* Properly append error messages; ASSERT if the error message buffer

exceeds 16 MB (which means somebody is failing to call geterror) (1672)

* Fix subtle Strutil::format and ustring::format crasher bugs with long

strings (r1654 - 0.8.8).

* Print the OIIO version in the ImageCache stats so we don't guess

when somebody sends us a log file with complaints.

* ImageCache::getattribute can retrieve its interesting internal

statistics individually by name. (r1721)

* idiff and iv increased their IC cache size. (r1722)

* idiff bug fixes: (1) files with different number of MIPmap levels

immediately failed, whereas they should have compared their top

levels, and only fail if the "-a" flag was used; (2) some failure

modes incorrectly printed a "PASS" message despite actually failing. (r1722)

* Changed the environment variable that contains the plugin search path

from IMAGEIO_LIBRARY_PATH to OPENIMAGEIO_LIBRARY_PATH. (r1723)

* Bug fix to ImageInput::read_image -- could crash due to an internal

buffer allocated as the wrong size. (r1724)

* Bug fixes to write_image(), related to subtle stride errors.

* Improved strhash, fewer ustring hash collisions.

* New maketx functionality: --constant-color-detect, --monochrome-detect,

--prman, --oiio (look in docs for explanation).

For developers / build issues:

* testtex: print memory use (r1522)

* Embedded plugins are now built within the OIIO namespace, if defined (r1559).

* Fixed implementation of TypeDesc construction from a string. (r1562)

* Incorporate PugiXML for XML parsing/writing needs (r1569).

* In-progress socket I/O plugin is in the code base, but not yet fully

supported.

* Disable python support if boost_python is not found. (r1701)

Release 0.8 (May 26 2010)

-------------------------

Major new features:

* Python bindings for the ImageInput, ImageOutput, ImageSpec, ImageBuf,

and ImageCache classes.

* New format plugin: SGI image file

* New format plugin: PNM/PPM/PGM/PBM

* New format plugin: DDS (currently reading only)

* New format plugin: Softimage PIC (currently reading only)

API changes:

* New "linearity" tags include AdobeRGB, Rec709, and KodakLog.

* ColorTransfer helper class can convert among the linearity types, and

may be optionally passed to convert_image and convert_types.

* Added to fmath.h: sincos, exp2f, log2f

* Renamed ErrHandler::ErrCode enums with EH_ prefix (to fix conflicts

with some Windows headers).

* ustring now has getstats() and memory() methods.

Fixes, minor enhancements, and performance improvements:

* ImageInput::create() error messages are more helpful.

* Fixed some error messages in FITS output, iconvert.

* maketx: Console flushes in status messages to that a calling process

will get status messages right away.

* Fix subtle ImageCache bug with invalidate().

* ImageCache/TextureSystem have improved multithreading performance

when large untiled files are needed simultaneously by many threads.

* TextureSystem: new 'missingcolor' texture option that, when provided,

can specify a color that will be used for missing textures rather than

generating errors. (If not supplied, missing tex is still an error.)

* BMP plugin enhancements.

* TIFF: support 64-bit float pixels, proper random scanline access emulation

for all appropriate compression types, handle incorrectly set-to-zero

image_full_width and image_full_height. (r1515 - 0.8.1)

* PNG: properly handle palette images, unassociated alpha, gamma

correction, endianness for 16-bit files, and has vastly better memory

consumption due to reading scanlines individually rather than

buffering the whole image (r1523 - 0.8.1); fix clamping/wrapping

problem for certain values when alpha > color. (r1605 - 0.8.3)

* iv fixes: fix improper recentering after image reload; fix crash when

image info window opened without any image files loaded; better status

window message when image reads fail; iv goes into background properly

in Windows; "slide show" mode; pixel view display moves if you need to

look at pixels underneath it;

* ImageCache bug: previously couldn't designate a cache > 2GB (because of

integer overflow issues).

* ImageCache::get_image_info and TextureSystem::get_texture_info now respond

to a new "exists" query that merely tests for existance of the file. (0.8.1)

* ImageCache/TextureSystem fix for a threading logic bug that could potentially

lead to a deadlock (and definitely led to hitting a DASSERT when compiled

for DEBUG mode). (0.8.1)

* maketx performance improvements: --noresize is now the default (use

--resize if you really want power-of-two resizing); much better

performance because it doesn't use ImageCache unless the image being

converted is very large; takes advantage of multiple cores by

automatically multithreading (the number of threads can be controlled

by the "-t" option, with the default to use the same number of threads

as hardware cores). (r1546 - 0.8.2)

* Fix potential crash in read_tile for files with tiles so big that they

would not fit on the stack (heap allocation used instead). (0.8.2)

* OpenEXR: add support for vector metadata attributes. (r1554 - 0.8.2)

* Improve TIFF open error messages. (r1570 - 0.8.3)

* Make ImageCache::get_pixels() and TextureSystem::get_texels() safe for

crop windows -- fill with zero outside the valid pixel data area. (r1579 - 0.8.3)

* In ImageCache::attribute (and by extension, TS::attribute), only

invalidate the cache if the attributes actually CHANGED. (r1582 - 0.8.3)

* maketx: --checknan option double checks that no source image pixels

are NaN or Inf (r1584 - 0.8.3).

* Fixed crash that could result from certain XML strings embedded in TIFF

headers (uncaught exception). (0.8.5)

* Fixed ImageCache deadlock when using autotile. (r1631 - 0.8.6)

* Fixed a longstanding performance issue with ImageCache automip, wherein

an unmipped file that is larger than the cache size leads to pathological

thrashing. The solution is to automatically raise the cache size to be

large enough to automip the file without danger of thrashing. (r1657 - 0.8.7)

For developers / build issues:

* EMBEDPLUGINS=1 is now the default. This means that all the format

plugins that come with OIIO are compiled into the main library, so

there's no reason for users to set $IMAGEIO_LIBRARY_PATH unless they

need custom format plugins not supplied with the main distribution.

* Fix compiler warnings (mostly under Windows): TBB stuff, ustring, windows.h.

* Option to build static libraries (with 'make LINKSTATIC=1').

* Fixes to make clean compilation with gcc-4.4.2.

* Allow custom 'platform' designation in the build.

* Allow custom installation destination ('make INSTALLDIR=...').

* ustring now takes half the memory (by no longer redundantly storing the

characters on Linux and OS X).

* Always use TBB (better performance on Windows for atomics). [0.8.2]

Release 0.7 (Nov 26 2009)

--------------------------

Major new features:

* New format plugin: JPEG-2000 (r1050)

* New format plugin: FITS (r1287 et al)

* TextureSystem: two new entries to TextureOptions which allow the texture

system to return the derivatives in s and t of the texture. (r1308)

API changes:

* Added imagespec() method to ImageCache and TextureSystem that returns a

reference to the internal ImageSpec of the image. This is much more

efficient than get_imagespec, but beware, the pointer is only valid

until somebody calls invalidate() on the file. (r1266)

* TextureOptions: eliminated the 'alpha' field. Added the dresultds and

dresultdt fields.

* Extend TypeDesc to include INT64 and UINT64. (r1145)

Fixes, minor enhancements, and performance improvements:

* Make EMBEDPLUGINS=1 the default. (0.7.1)

* Improvements to the Targa plugin, bringing it into compliance with

TGA 2.0 (r1163, r1297)

* Fixed PNG-related crashes on 64 bit machines. (r1336)

* iv improvements: support for multichannel images and different color

modes (r1129), support auto use mipmap level based on zooming (r1093),

correct pixelview for rotated images (r1092), fix off-by-one error

with some zoom levels (r1089).

* maketx: fixed problem where it was sometimes not setting the output

data format to match the input data format correctly (r1290), fixed

problems with writing EXR files with --nomipmap (r1286), fixed cases

where data window was not the same as display window (i.e. crop or

overscan).

* ImageCache/TextureSystem: various threading and performance improvements.

(r1188, r1211, r1288, r1299)

* TS: fixed incorrect "texturetype" results of get_texture_info. (r1314)

* IC/TS: fixed crasher bugs when doing get_pixels of images that had

non-zero data window origin. (r1313)

* IC/TS: better error messages and recovery from spooky open and read_tile

failures. (r1321)

* When IC/TS reads and entire (untiled) image, the file is closed afterwards.

This is especially helpful on Windows where open files are locked to

writing by other processes. (r1298)

* HUGE speedup of ImageCache::get_image_info (and TS::get_texture_info)

b replacing strcmp's with ustring == (r1281).

* IC: fixed various subtle logic errors with broken files and

invalidate/invalidate_all. (r1252, r1279)

* IC/TS: fixed memory leak of per-thread imagecache data and subtle race

conditions. (r1057, r1216, r1222, r1238)

* TS: fixed problem where missing or broken textures weren't using the

right fill color. (r1268)

* IC: Clamp cache size to a reasonable lower limit (r1256)

* TS: improvements to filter estimation (1134) and bicubic interpolation

numerical stability and speed (r1166, r1179, r1333).

* IC: when autotile=0 but automip=1, fixed bug that was wasting HUGE

amounts of memory by using the wrong resolution for mip levels! (r1147)

* IC: fix an edge case where tiles could leak. (r1044)

* Fixed some hairy static initialization problems with ustring (r1280)

* Use a spin lock rather than block in ustring constructor gives HUGE

speedup especially on Windows. (r1167)

* TS: Make everything work for textures whose image origin is not (0,0)

or whose pixel data window doesn't match the image window (i.e. crop

windows or overscan). (r1332)

* IC/TS: Correctly invalidate files afected by recently changed "automip"

setting. (r1337)

* IC/TS: fix crash that could occur with non-existant textures in combination

with invalidate_all(). (r1338)

* Make create() error messages more helpful. (0.7.1)

For developers:

* Build more easily when older OpenEXR versions are found. (r1082)

* HTML Doxygen documentation on the public APIs. (r1311, r1312, et al)

* Sysutil::this_program_path finds the full path of the running program.

(r1304)

* Better compiler-side error checking of printf-like functions (r1302)

* A new site/... area where important users with local build customization

needs can check in (reasonably sized) custom makefiles or other helpful

things. (r1284)

* New ErrorHandler class, currently unused by OIIO itself, but very handy.

(r1265)

* Fixed lots of compiler warnings.

* Upgraded to a more recent TBB, which fixed some atomic problems. (r1211)

* ustring: make string comparison safe for empty strings. (r1330)

* Include file fixes for gcc 4.4. (r1331)

* Regularize all #include references to Imath and Openexr to

<OpenEXR/blah>. (r1335)

Release 0.6 (Jul 20, 2009)

--------------------------

Major new features:

* Everything has been ported to Windows.

* iv: handle older cards or versions of OpenGL, including lack of GLSL,

non-pow2 textures, etc. Generally should now be usable (if slightly

degraded functionality) for most OpenGL 1.x implementations. (r764)

* ImageBuf that only reads images is now automatically backed by

ImageCache. In the process, add Iterator and ConstIterator as "safe"

and efficient ways to visit all the pixels within a region of the

image, and eliminate the unsafe pixeladdr() method. Also added

ImageCache::attribute("forcefloat") to conveniently force all

ImageCache internal storage to be float. (r770,771,772,775,803,805)

* iv can now support "big" images, in particular larger than the OpenGL

texture limit (4k), and also very big images via the use of ImageCache

(r912).

* Truevision Targa (TGA) support. (r776,792)

API changes:

* In a variety of places that specified pixel rectangles (including

ImageCache::get_pixels and TextureSystem::get_texels), specify regions

as (xbegin,xend,ybegin,yend) rather than (xmin, ymin, xmax, ymax).

Note that 'end' is, like STL, one past the last pixel. (r771)

* All classes now query error messages using geterror(). Previously some

used geterror() and others used error_message(). The old error_message

is deprecated and will be removed in a future release (r957).

Fixes and minor enhancements:

* OpenEXR plugin improvements: don't set "textureformat" attribute

unless it really is a mip-mapped texture. Preserve the mipmap

rounding mode when copying OpenEXR files, by using the

"openexr:roundingmode" metadata (r801). Properly mark the alpha

and z channels in the ImageSpec (r885).

* TIFF plugin improvements: handle 2 bpp images, properly name channels

when reading palette images (r802), no longer uses the

PREDICTOR_FLOATINGPOINT, since older versions of libtiff can't read

those files (r752). Properly set the Exif sRGB marker (r888).

* BMP plugin improvements: allows top-down scanlines as well as bottom-up,

correctly reads 4-, 8- and 24-bit images that have scanlines padded to

4-byte boundaries.

* ImageBuf algorithms: crop, add (r892).

* EXPERIMENTAL: 'iprocess' utility that lets you do some simple image

processing operations (r892).

* ImageCache additional statistics: file open time (r743), alert if

mip-mapped images are accessed at only their highest-res level (r743).

Properly emulates random access reads of LZW-compressed files (r920).

* iv: fix problems displaying images whose width was not a multiple of 4

bytes (r767), when loading small images, the window starts out a

usable minimum size, iv always raises the window upon first opening,

fix pixelview of alpha in RGB images (r939).

* iv: Fix off-by-one error that drew the last scanline incorrectly

sometimes (r1089). Give feedback when doing a slow repaint (r1089).

* iv improvements: fix skew-like problems with Intel cards, fix non-GLSL

texture mapping, limit texture size to 4096^2 to keep GL memory use

reasonable make "Reload" work again after breaking a few patches ago

(r1090).

* maketx: in the case where the input texture was already float and needed

no pow2 rounding, we didn't get the tiling or other metadata right (r824)

* ImageCache and TextureSystem do a better job of reporting low-level

ImageInput errors up the chain (r945).

* ImageCache: new option "accept_untiled", when set to zero, will reject

untiled images (r979).

* 'maketx --hash' embeds a SHA-1 fingerprint of the source image's

pixels in the texture file header's "ImageDescription" field.

ImageCache (and TextureSystem) will recognize these and eliminate

redundant I/O when it finds multiple files with identical pixels.

(r741,742)

* iinfo: eliminate --md5 in favor of --hash (computing SHA-1). (r749)

* Fix ImageCache and TextureSystem to have thread-specific error

reporting. (r1045)

* TextureSystem: fixed subtle bug in destruction order that could

double-free per-thread data. (r1057)

* ImageCache: now get_image_info("format") returns teh native data format

of the file. (r1058)

* maketx: properly handle input files where the data window is not the

same as the display window or if the image offset was nonzero. The

correct semantics are that the DISPLAY window is what maps to [0,1] in

texture space. (r1059)

For developers:

* Lots of fixes for Windows compilation (r754, r860)

* A build option for whether or not to use TBB for atomics. (r780)

* New test suite entries: tiff-suite, tiff-depths (r787,788), openexr-suite,

openexr-multires, openexr-chroma (r789,790,791).

* New unit tests for ImageBuf::zero, ImageBuf::fill, ImageBufAlgo::crop (r891).

* Reorganization of unit tests.

* Improvements to ArgParse internals and interface.

* All the macros that prevent double-inclusion of header files have had

their names changed from FILENAME_H to OPENIMAGEIO_FILENAME_H so that

they don't conflict with other package (r967).

* Reorganized test suite hierarchy.

* Optionally allow the entire library to be enclosed in a versioned

namespace (via 'make NAMESPACE=foo') .

* Upgraded to a more recent version of TBB that seems to have fixed some

bugs with atomic counters. (r1027)

Release 0.5 (31 May 2009)

-------------------------

Features:

* New image format plugins: zfile (r529), ICO (r579,585,588,619,637),

BMP (reads only) (r580,584,614,625)

* Support for multiple subimages in iinfo (r607), iconvert, idiff (r631),

* ImageCache and TextureSystem: better stats (r528, r717), bug fixes for

large untiled images (r558,561), anisotropic improvements, stats

improvements, thread safety improvements (r566),

invalidate/invalidate_all (r591), better error reporting (r606),

thread safety fixes (r650), fix problem when filter size was precisely

at a mipmap level it blurred to higher level (r687), avoid problems

when blur > 1 and there is no 1x1 mip level (r687).

* maketx: --shadow (r530), --nomipmap (r531), big speedups (r699).

* idiff: add RMS error and PSNR (r622).

* OpenEXR plugin: support "openexr:lineOrder" attribute so

random-tile-order files may be written (r569).

* API: better handling of huge images that could have sizes > 32 bits (r575)

Fixes and minor enhancements:

* iinfo: fix - lack of help message when no files specified (r513).

* maketx: make -u work properly (r517), wasn't honoring --separate (r532).

* iconvert: add --separate and --contig (r535).

* TIFF plugin: work around error in old versions of libtiff for IPTC

packets (r674).

* JPEG plugin: if linearity is sRGB, set Exif:ColorSpace correctly (r536)

* iv: more robust to certain OpenGL versions (r550), support for OpenGL

versions that don't support non-pow2 textures (r563), correct texture

mapping when GL_NV_texture_rectangle is the best texture mapping

extension we can find (r572).

* idiff: refactored to use ImageBuf internally (r541)

For developers:

* Switch to CMake for builds.

* Build enhancements: 'make USE_OPENGL=0' (r512), better handling of

certain system OpenGL headers (r512), more robust with Qt location

(r542), handle older Boost 1.35 (r574).

* Tests: test_libOpenImageIO (r581), ico (r621),

* More work towards clean windows compilation (r659,672).

Release 0.4 (15 Mar 2009 - not formally released)

-------------------------------------------------

(compared to the 'initial' developer release of 1 Sep 2008)

Features:

* Lots of work on docs.

* API changes:

- Replaced ParamBaseType/ParamType with TypeDesc.

- ImageSpec: add full_{x,y,z} fields.

- Changed ImageInput/ImageOutput create(), open(), and suports() to

take std::string instead of char* (r297)

- Added ImageOutput::copy_image (r428)

- TypeDesc - distinguish COLOR from NOXFORM. (r466)

- ImageInput:open(name,newspec,config). (r482)

* igrep utility searches metadata of images (r447,455,499)

* iconvert: add --caption, --keyword, --clear-keywords, --adjust-time

--attrib, --inplace (r484,488,491), --compression (r354), --quality

(r362).

* iv: put into background after launch unless -F arg (r240),

alt-leftmouse zooms, handle sRGB correctly, GAMMA env variable, full

HDR for half and float (r243), honor full/display window versus data

window (r300), better view re-centering behavior (r355), fix

orientation bugs (r363,380,381).

* TextureSystem: single point texture lookups (r247), have all routines

return a bool giving error status, rename gettextureinfo ->

get_texture_info, add get_imagespec, get_texels, geterror (r252,265),

replace hard-coded get/set routines with generic

attribute/getattribute (r321), accept non-tiled and non-mipped

textures (r317,319,388,389,390), separate the image cache into a

separate ImageCache class that may be used independently of

TextureSystem (r326,327,393), better statistics including per-file

stats (r333,360,375,429), invalidate method (r460).

* TIFF plugin: read/write EXIF, IPTC IIM, and IPTC XPM/XML data

(r406,407,456,458)

* JPEG plugin: read/write IPTC IIM, XMP, and GPS metadata

(r408,411,458,461), implement ImageOutput::copy_data() can copy images

without altering pixel values (r483).

Fixes and minor enhancements:

* ImageBuf: add option to read() that allows data format conversion (r244),

add oriented{x,y} and oriented_full_{width,height} methods (r296).

* TextureSystem: fix bicubic filetering (r309), big memory savings by

not having libtiff use memory mapping (r332), lots of performance

tuning (r351), anisotropic texture improvements (r364), bug fixes for

search paths (r459).

* iinfo: print color space and file format info (r241), better printing

of matrix metadata (r365), new options -f, -m (r501).

* idiff: bug fix - not producing difference image (r402)

* maketx: deduce default file format from extension (r275).

* All format plugins: better error detection in open() for senseless

resolutions (r294,295)

* OpenEXR plugin: handle float as well as half data, fixes when image

origin is not (0,0) (r291), fix leak of exr writer (r292), conform to

common conventions for camera matrix naming (r367), regularize

capitalization of metadata (r412)

* TIFF plugin: bug fix for combination of tile + separate (r304), fixes

to retrieval of matrix tags (r366)

* HDR plugin: emulate random access of scanlines (r387), better error

reporting (r451).

* JPEG plugin: respect "CompressionQuality" (r361), emulate random

access of scanlines (r387), properly read & write JPEG_COM marker for

comments (r403), assume sRGB unless the metadata say otherwise (r414).

For developers:

* Preliminary work on Windows port (r398,399)

* Include all the needed .h files in the dist area (r251)

* Handle older gcc (r273), older boost (r301,431), older OpenEXR

(r301), older libtiff (r432).

* 'make EMBEDPLUGINS=1' compiles the bundled plugins right into main

library (r302).

* Put header files in dist/ARCH/include/OpenImageIO (r303), rename

src/libimageio -> src/libOpenImageIO (r382).

Initial developer release 0.1 (9/1/08):

---------------------------------------

* ImageInput, ImageOutput, TextureSystem APIs pretty mature

* Plugins: TIFF, JPEG/JFIF, OpenEXR, PNG, HDR/rgbe

* iv - basic display, multiple images, menus, status bar, info window,

basic prefs window, pixel view tool, zoom, pan, open, open recent,

close, save as, view subimages, view channels, gamma, exposure,

fit window to image, fit image to window, full screen.

* iconvert

* idiff

* maketx

* API docs for ImageInput, ImageOutput, writing plugins

* Linux and OSX