8b9bc4b963
Because of e8b40f3c2b, we now support
multiple data precisions in the same libjpeg API library, so
BITS_IN_JSAMPLE is no longer used to specify the data precision at build
time. However, some downstream software expects the macro to be
defined. Since 12-bit data precision is an opt-in feature that requires
explicitly calling 12-bit-specific libjpeg API functions and using
12-bit-specific data types, the unmodified portion of the libjpeg API
still behaves as if it were built for 8-bit precision, and JSAMPLE is
still literally an 8-bit data type. Thus, it is correct to externally
define BITS_IN_JSAMPLE to 8 in jconfig.h. Since the build system also
uses BITS_IN_JSAMPLE internally to build both 8-bit and 12-bit versions
of relevant modules, the definition of BITS_IN_JSAMPLE in jconfig.h is
now guarded by #ifndef BITS_IN_JSAMPLE. (Hopefully that doesn't cause
any problems.)
Fixes #632
61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
/* Version ID for the JPEG library.
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* Might be useful for tests like "#if JPEG_LIB_VERSION >= 60".
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*/
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#define JPEG_LIB_VERSION @JPEG_LIB_VERSION@
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/* libjpeg-turbo version */
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#define LIBJPEG_TURBO_VERSION @VERSION@
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/* libjpeg-turbo version in integer form */
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#define LIBJPEG_TURBO_VERSION_NUMBER @LIBJPEG_TURBO_VERSION_NUMBER@
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/* Support arithmetic encoding when using 8-bit samples */
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#cmakedefine C_ARITH_CODING_SUPPORTED 1
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/* Support arithmetic decoding when using 8-bit samples */
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#cmakedefine D_ARITH_CODING_SUPPORTED 1
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/* Support in-memory source/destination managers */
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#define MEM_SRCDST_SUPPORTED 1
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/* Use accelerated SIMD routines when using 8-bit samples */
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#cmakedefine WITH_SIMD 1
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/* This version of libjpeg-turbo supports run-time selection of data precision,
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* so BITS_IN_JSAMPLE is no longer used to specify the data precision at build
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* time. However, some downstream software expects the macro to be defined.
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* Since 12-bit data precision is an opt-in feature that requires explicitly
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* calling 12-bit-specific libjpeg API functions and using 12-bit-specific data
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* types, the unmodified portion of the libjpeg API still behaves as if it were
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* built for 8-bit precision, and JSAMPLE is still literally an 8-bit data
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* type. Thus, it is correct to define BITS_IN_JSAMPLE to 8 here.
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*/
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#ifndef BITS_IN_JSAMPLE
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#define BITS_IN_JSAMPLE 8
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#endif
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#ifdef _WIN32
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#undef RIGHT_SHIFT_IS_UNSIGNED
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/* Define "boolean" as unsigned char, not int, per Windows custom */
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#ifndef __RPCNDR_H__ /* don't conflict if rpcndr.h already read */
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typedef unsigned char boolean;
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#endif
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#define HAVE_BOOLEAN /* prevent jmorecfg.h from redefining it */
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/* Define "INT32" as int, not long, per Windows custom */
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#if !(defined(_BASETSD_H_) || defined(_BASETSD_H)) /* don't conflict if basetsd.h already read */
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typedef short INT16;
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typedef signed int INT32;
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#endif
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#define XMD_H /* prevent jmorecfg.h from redefining it */
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#else
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/* Define if your (broken) compiler shifts signed values as if they were
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unsigned. */
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#cmakedefine RIGHT_SHIFT_IS_UNSIGNED 1
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#endif
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