diff options
| author | dcommander <dcommander@632fc199-4ca6-4c93-a231-07263d6284db> | 2010-11-23 17:11:06 +0000 |
|---|---|---|
| committer | dcommander <dcommander@632fc199-4ca6-4c93-a231-07263d6284db> | 2010-11-23 17:11:06 +0000 |
| commit | 7fb6c9f948554287cd9213244b7710c34d1443f3 (patch) | |
| tree | 24bcc72bf9a691fe9c9f4f74fee1ec0e902f29c5 /BUILDING.txt | |
| parent | d0076b298d25a4c88345a681d1ecbec5f604b973 (diff) | |
Allow arithmetic encoding/decoding to be disabled in CMake build
git-svn-id: svn://svn.code.sf.net/p/libjpeg-turbo/code/trunk@301 632fc199-4ca6-4c93-a231-07263d6284db
Diffstat (limited to 'BUILDING.txt')
| -rw-r--r-- | BUILDING.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/BUILDING.txt b/BUILDING.txt index aa1d1cf..9da5f20 100644 --- a/BUILDING.txt +++ b/BUILDING.txt @@ -105,6 +105,17 @@ libjpeg v8b. See README-turbo.txt for more information on libjpeg v7 and v8b emulation. +Arithmetic Coding Support +------------------------- + +Since the patent on arithmetic coding has expired, this functionality has been +included in this release of libjpeg-turbo. libjpeg-turbo's implementation is +based on the implementation in libjpeg v8b, but it works when emulating libjpeg +v7 or v6b as well. The default is to enable both arithmetic encoding and +decoding, but those who have philosophical objections to arithmetic coding can +add --without-arith-enc or --without-arith-dec to the configure command line to +disable encoding or decoding (respectively.) + ======================== Installing libjpeg-turbo @@ -416,6 +427,18 @@ libjpeg v8b. See README-turbo.txt for more information on libjpeg v7 and v8b emulation. +Arithmetic Coding Support +------------------------- + +Since the patent on arithmetic coding has expired, this functionality has been +included in this release of libjpeg-turbo. libjpeg-turbo's implementation is +based on the implementation in libjpeg v8b, but it works when emulating libjpeg +v7 or v6b as well. The default is to enable both arithmetic encoding and +decoding, but those who have philosophical objections to arithmetic coding can +add "-DWITH_ARITH_ENC=0" or "-DWITH_ARITH_DEC=0" to the cmake command line to +disable encoding or decoding (respectively.) + + ======================== Installing libjpeg-turbo ======================== |