kc3-lang/libjpeg-turbo/src/jconfig.h.in

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• Hash : e69dd40c
  Author :
  Date : 2024-01-23T13:26:41
  

  Reorganize source to make things easier to find
  
  - Move all libjpeg documentation, except for README.ijg, into the doc/
    subdirectory.
  
  - Move the TurboJPEG C API documentation from doc/html/ into
    doc/turbojpeg/.
  
  - Move all C source code and headers into a src/ subdirectory.
  
  - Move turbojpeg-jni.c into the java/ subdirectory.
  
  Referring to #226, there is no ideal solution to this problem.  A
  semantically ideal solution would have involved placing all source code,
  including the SIMD and Java source code, under src/ (or perhaps placing
  C library source code under lib/ and C test program source code under
  test/), all header files under include/, and all documentation under
  doc/.  However:
  
  - To me it makes more sense to have separate top-level directories for
    each language, since the SIMD extensions and the Java API are
    technically optional features.  src/ now contains only the code that
    is relevant to the core C API libraries and associated programs.
  - I didn't want to bury the java/ and simd/ directories or add a level
    of depth to them, since both directories already contain source code
    that is 3-4 levels deep.
  - I would prefer not to separate the header files from the C source
    code, because:
    1. It would be disruptive.  libjpeg and libjpeg-turbo have
       historically placed C source code and headers in the same
       directory, and people who are familiar with both projects (self
       included) are used to looking for the headers in the same directory
       as the C source code.
    2. In terms of how the headers are used internally in libjpeg-turbo,
       the distinction between public and private headers is a bit fuzzy.
  - It didn't make sense to separate the test source code from the library
    source code, since there is not a clear distinction in some cases.
    (For instance, the IJG image I/O functions are used by cjpeg and djpeg
    as well as by the TurboJPEG API.)
  
  This solution is minimally disruptive, since it keeps all C source code
  and headers together and keeps java/ and simd/ as top-level directories.
  It is a bit awkward, because java/ and simd/ technically contain source
  code, even though they are not under src/.  However, other solutions
  would have been more awkward for different reasons.
  
  Closes #226
  

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• src/jconfig.h.in

• /* Version ID for the JPEG library.
   * Might be useful for tests like "#if JPEG_LIB_VERSION >= 60".
   */
  #define JPEG_LIB_VERSION  @JPEG_LIB_VERSION@
  
  /* libjpeg-turbo version */
  #define LIBJPEG_TURBO_VERSION  @VERSION@
  
  /* libjpeg-turbo version in integer form */
  #define LIBJPEG_TURBO_VERSION_NUMBER  @LIBJPEG_TURBO_VERSION_NUMBER@
  
  /* Support arithmetic encoding when using 8-bit samples */
  #cmakedefine C_ARITH_CODING_SUPPORTED 1
  
  /* Support arithmetic decoding when using 8-bit samples */
  #cmakedefine D_ARITH_CODING_SUPPORTED 1
  
  /* Support in-memory source/destination managers */
  #define MEM_SRCDST_SUPPORTED  1
  
  /* Use accelerated SIMD routines when using 8-bit samples */
  #cmakedefine WITH_SIMD 1
  
  /* This version of libjpeg-turbo supports run-time selection of data precision,
   * 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 define BITS_IN_JSAMPLE to 8 here.
   */
  #ifndef BITS_IN_JSAMPLE
  #define BITS_IN_JSAMPLE  8
  #endif
  
  #ifdef _WIN32
  
  #undef RIGHT_SHIFT_IS_UNSIGNED
  
  /* Define "boolean" as unsigned char, not int, per Windows custom */
  #ifndef __RPCNDR_H__            /* don't conflict if rpcndr.h already read */
  typedef unsigned char boolean;
  #endif
  #define HAVE_BOOLEAN            /* prevent jmorecfg.h from redefining it */
  
  /* Define "INT32" as int, not long, per Windows custom */
  #if !(defined(_BASETSD_H_) || defined(_BASETSD_H))   /* don't conflict if basetsd.h already read */
  typedef short INT16;
  typedef signed int INT32;
  #endif
  #define XMD_H                   /* prevent jmorecfg.h from redefining it */
  
  #else
  
  /* Define if your (broken) compiler shifts signed values as if they were
     unsigned. */
  #cmakedefine RIGHT_SHIFT_IS_UNSIGNED 1
  
  #endif
  

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