kc3-lang/libjpeg-turbo/src/jsamplecomp.h

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• Hash : 3290711d
  Author :
  Date : 2024-06-22T17:45:31
  

  cjpeg: Only support 8-bit precision w/ GIF input
  
  Creating 12-bit-per-sample JPEG images from GIF input images was a
  useful testing feature when the data precision was a compile-time
  setting.  However, now that the data precision is a runtime setting,
  it doesn't make sense for cjpeg to allow data precisions other than
  8-bit with GIF input images.  GIF images are limited to 256 colors from
  a palette of 8-bit-per-component RGB values, so they cannot take
  advantage of the additional gamut afforded by higher data precisions.
  

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• src/jsamplecomp.h

• /*
   * jsamplecomp.h
   *
   * Copyright (C) 2022, D. R. Commander.
   * For conditions of distribution and use, see the accompanying README.ijg
   * file.
   */
  
  /* In source files that must be compiled for multiple data precisions, we
   * prefix all precision-dependent data types, macros, methods, fields, and
   * function names with an underscore.  Including this file replaces those
   * precision-independent tokens with their precision-dependent equivalents,
   * based on the value of BITS_IN_JSAMPLE.
   */
  
  #ifndef JSAMPLECOMP_H
  #define JSAMPLECOMP_H
  
  #if BITS_IN_JSAMPLE == 16
  
  /* Sample data types and macros (jmorecfg.h) */
  #define _JSAMPLE  J16SAMPLE
  
  #define _MAXJSAMPLE  MAXJ16SAMPLE
  #define _CENTERJSAMPLE   CENTERJ16SAMPLE
  
  #define _JSAMPROW  J16SAMPROW
  #define _JSAMPARRAY  J16SAMPARRAY
  #define _JSAMPIMAGE  J16SAMPIMAGE
  
  /* External functions (jpeglib.h) */
  #define _jpeg_write_scanlines  jpeg16_write_scanlines
  #define _jpeg_read_scanlines  jpeg16_read_scanlines
  
  /* Internal methods (jpegint.h) */
  
  #ifdef C_LOSSLESS_SUPPORTED
  /* Use the 16-bit method in the jpeg_c_main_controller structure. */
  #define _process_data  process_data_16
  /* Use the 16-bit method in the jpeg_c_prep_controller structure. */
  #define _pre_process_data  pre_process_data_16
  /* Use the 16-bit method in the jpeg_c_coef_controller structure. */
  #define _compress_data  compress_data_16
  /* Use the 16-bit method in the jpeg_color_converter structure. */
  #define _color_convert  color_convert_16
  /* Use the 16-bit method in the jpeg_downsampler structure. */
  #define _downsample  downsample_16
  #endif
  #ifdef D_LOSSLESS_SUPPORTED
  /* Use the 16-bit method in the jpeg_d_main_controller structure. */
  #define _process_data  process_data_16
  /* Use the 16-bit method in the jpeg_d_coef_controller structure. */
  #define _decompress_data  decompress_data_16
  /* Use the 16-bit method in the jpeg_d_post_controller structure. */
  #define _post_process_data  post_process_data_16
  /* Use the 16-bit method in the jpeg_upsampler structure. */
  #define _upsample  upsample_16
  /* Use the 16-bit method in the jpeg_color_converter structure. */
  #define _color_convert  color_convert_16
  #endif
  
  /* Global internal functions (jpegint.h) */
  #ifdef C_LOSSLESS_SUPPORTED
  #define _jinit_c_main_controller  j16init_c_main_controller
  #define _jinit_c_prep_controller  j16init_c_prep_controller
  #define _jinit_color_converter  j16init_color_converter
  #define _jinit_downsampler  j16init_downsampler
  #define _jinit_c_diff_controller  j16init_c_diff_controller
  #define _jinit_lossless_compressor  j16init_lossless_compressor
  #endif
  
  #ifdef D_LOSSLESS_SUPPORTED
  #define _jinit_d_main_controller  j16init_d_main_controller
  #define _jinit_d_post_controller  j16init_d_post_controller
  #define _jinit_upsampler  j16init_upsampler
  #define _jinit_color_deconverter  j16init_color_deconverter
  #define _jinit_merged_upsampler  j16init_merged_upsampler
  #define _jinit_d_diff_controller  j16init_d_diff_controller
  #define _jinit_lossless_decompressor  j16init_lossless_decompressor
  #endif
  
  #if defined(C_LOSSLESS_SUPPORTED) || defined(D_LOSSLESS_SUPPORTED)
  #define _jcopy_sample_rows  j16copy_sample_rows
  #endif
  
  /* Internal fields (cdjpeg.h) */
  
  #if defined(C_LOSSLESS_SUPPORTED) || defined(D_LOSSLESS_SUPPORTED)
  /* Use the 16-bit buffer in the cjpeg_source_struct and djpeg_dest_struct
     structures. */
  #define _buffer  buffer16
  #endif
  
  /* Image I/O functions (cdjpeg.h) */
  #ifdef C_LOSSLESS_SUPPORTED
  #define _jinit_read_ppm  j16init_read_ppm
  #endif
  
  #ifdef D_LOSSLESS_SUPPORTED
  #define _jinit_write_ppm  j16init_write_ppm
  #endif
  
  #elif BITS_IN_JSAMPLE == 12
  
  /* Sample data types and macros (jmorecfg.h) */
  #define _JSAMPLE  J12SAMPLE
  
  #define _MAXJSAMPLE  MAXJ12SAMPLE
  #define _CENTERJSAMPLE   CENTERJ12SAMPLE
  
  #define _JSAMPROW  J12SAMPROW
  #define _JSAMPARRAY  J12SAMPARRAY
  #define _JSAMPIMAGE  J12SAMPIMAGE
  
  /* External functions (jpeglib.h) */
  #define _jpeg_write_scanlines  jpeg12_write_scanlines
  #define _jpeg_write_raw_data  jpeg12_write_raw_data
  #define _jpeg_read_scanlines  jpeg12_read_scanlines
  #define _jpeg_skip_scanlines  jpeg12_skip_scanlines
  #define _jpeg_crop_scanline  jpeg12_crop_scanline
  #define _jpeg_read_raw_data  jpeg12_read_raw_data
  
  /* Internal methods (jpegint.h) */
  
  /* Use the 12-bit method in the jpeg_c_main_controller structure. */
  #define _process_data  process_data_12
  /* Use the 12-bit method in the jpeg_c_prep_controller structure. */
  #define _pre_process_data  pre_process_data_12
  /* Use the 12-bit method in the jpeg_c_coef_controller structure. */
  #define _compress_data  compress_data_12
  /* Use the 12-bit method in the jpeg_color_converter structure. */
  #define _color_convert  color_convert_12
  /* Use the 12-bit method in the jpeg_downsampler structure. */
  #define _downsample  downsample_12
  /* Use the 12-bit method in the jpeg_forward_dct structure. */
  #define _forward_DCT  forward_DCT_12
  /* Use the 12-bit method in the jpeg_d_main_controller structure. */
  #define _process_data  process_data_12
  /* Use the 12-bit method in the jpeg_d_coef_controller structure. */
  #define _decompress_data  decompress_data_12
  /* Use the 12-bit method in the jpeg_d_post_controller structure. */
  #define _post_process_data  post_process_data_12
  /* Use the 12-bit method in the jpeg_inverse_dct structure. */
  #define _inverse_DCT_method_ptr  inverse_DCT_12_method_ptr
  #define _inverse_DCT  inverse_DCT_12
  /* Use the 12-bit method in the jpeg_upsampler structure. */
  #define _upsample  upsample_12
  /* Use the 12-bit method in the jpeg_color_converter structure. */
  #define _color_convert  color_convert_12
  /* Use the 12-bit method in the jpeg_color_quantizer structure. */
  #define _color_quantize  color_quantize_12
  
  /* Global internal functions (jpegint.h) */
  #define _jinit_c_main_controller  j12init_c_main_controller
  #define _jinit_c_prep_controller  j12init_c_prep_controller
  #define _jinit_c_coef_controller  j12init_c_coef_controller
  #define _jinit_color_converter  j12init_color_converter
  #define _jinit_downsampler  j12init_downsampler
  #define _jinit_forward_dct  j12init_forward_dct
  #ifdef C_LOSSLESS_SUPPORTED
  #define _jinit_c_diff_controller  j12init_c_diff_controller
  #define _jinit_lossless_compressor  j12init_lossless_compressor
  #endif
  
  #define _jinit_d_main_controller  j12init_d_main_controller
  #define _jinit_d_coef_controller  j12init_d_coef_controller
  #define _jinit_d_post_controller  j12init_d_post_controller
  #define _jinit_inverse_dct  j12init_inverse_dct
  #define _jinit_upsampler  j12init_upsampler
  #define _jinit_color_deconverter  j12init_color_deconverter
  #define _jinit_1pass_quantizer  j12init_1pass_quantizer
  #define _jinit_2pass_quantizer  j12init_2pass_quantizer
  #define _jinit_merged_upsampler  j12init_merged_upsampler
  #ifdef D_LOSSLESS_SUPPORTED
  #define _jinit_d_diff_controller  j12init_d_diff_controller
  #define _jinit_lossless_decompressor  j12init_lossless_decompressor
  #endif
  
  #define _jcopy_sample_rows  j12copy_sample_rows
  
  /* Global internal functions (jdct.h) */
  #define _jpeg_fdct_islow  jpeg12_fdct_islow
  #define _jpeg_fdct_ifast  jpeg12_fdct_ifast
  
  #define _jpeg_idct_islow  jpeg12_idct_islow
  #define _jpeg_idct_ifast  jpeg12_idct_ifast
  #define _jpeg_idct_float  jpeg12_idct_float
  #define _jpeg_idct_7x7  jpeg12_idct_7x7
  #define _jpeg_idct_6x6  jpeg12_idct_6x6
  #define _jpeg_idct_5x5  jpeg12_idct_5x5
  #define _jpeg_idct_4x4  jpeg12_idct_4x4
  #define _jpeg_idct_3x3  jpeg12_idct_3x3
  #define _jpeg_idct_2x2  jpeg12_idct_2x2
  #define _jpeg_idct_1x1  jpeg12_idct_1x1
  #define _jpeg_idct_9x9  jpeg12_idct_9x9
  #define _jpeg_idct_10x10  jpeg12_idct_10x10
  #define _jpeg_idct_11x11  jpeg12_idct_11x11
  #define _jpeg_idct_12x12  jpeg12_idct_12x12
  #define _jpeg_idct_13x13  jpeg12_idct_13x13
  #define _jpeg_idct_14x14  jpeg12_idct_14x14
  #define _jpeg_idct_15x15  jpeg12_idct_15x15
  #define _jpeg_idct_16x16  jpeg12_idct_16x16
  
  /* Internal fields (cdjpeg.h) */
  
  /* Use the 12-bit buffer in the cjpeg_source_struct and djpeg_dest_struct
     structures. */
  #define _buffer  buffer12
  
  /* Image I/O functions (cdjpeg.h) */
  #define _jinit_write_gif  j12init_write_gif
  #define _jinit_read_ppm  j12init_read_ppm
  #define _jinit_write_ppm  j12init_write_ppm
  
  #define _read_color_map  read_color_map_12
  
  #else /* BITS_IN_JSAMPLE */
  
  /* Sample data types and macros (jmorecfg.h) */
  #define _JSAMPLE  JSAMPLE
  
  #define _MAXJSAMPLE  MAXJSAMPLE
  #define _CENTERJSAMPLE   CENTERJSAMPLE
  
  #define _JSAMPROW  JSAMPROW
  #define _JSAMPARRAY  JSAMPARRAY
  #define _JSAMPIMAGE  JSAMPIMAGE
  
  /* External functions (jpeglib.h) */
  #define _jpeg_write_scanlines  jpeg_write_scanlines
  #define _jpeg_write_raw_data  jpeg_write_raw_data
  #define _jpeg_read_scanlines  jpeg_read_scanlines
  #define _jpeg_skip_scanlines  jpeg_skip_scanlines
  #define _jpeg_crop_scanline  jpeg_crop_scanline
  #define _jpeg_read_raw_data  jpeg_read_raw_data
  
  /* Internal methods (jpegint.h) */
  
  /* Use the 8-bit method in the jpeg_c_main_controller structure. */
  #define _process_data  process_data
  /* Use the 8-bit method in the jpeg_c_prep_controller structure. */
  #define _pre_process_data  pre_process_data
  /* Use the 8-bit method in the jpeg_c_coef_controller structure. */
  #define _compress_data  compress_data
  /* Use the 8-bit method in the jpeg_color_converter structure. */
  #define _color_convert  color_convert
  /* Use the 8-bit method in the jpeg_downsampler structure. */
  #define _downsample  downsample
  /* Use the 8-bit method in the jpeg_forward_dct structure. */
  #define _forward_DCT  forward_DCT
  /* Use the 8-bit method in the jpeg_d_main_controller structure. */
  #define _process_data  process_data
  /* Use the 8-bit method in the jpeg_d_coef_controller structure. */
  #define _decompress_data  decompress_data
  /* Use the 8-bit method in the jpeg_d_post_controller structure. */
  #define _post_process_data  post_process_data
  /* Use the 8-bit method in the jpeg_inverse_dct structure. */
  #define _inverse_DCT_method_ptr  inverse_DCT_method_ptr
  #define _inverse_DCT  inverse_DCT
  /* Use the 8-bit method in the jpeg_upsampler structure. */
  #define _upsample  upsample
  /* Use the 8-bit method in the jpeg_color_converter structure. */
  #define _color_convert  color_convert
  /* Use the 8-bit method in the jpeg_color_quantizer structure. */
  #define _color_quantize  color_quantize
  
  /* Global internal functions (jpegint.h) */
  #define _jinit_c_main_controller  jinit_c_main_controller
  #define _jinit_c_prep_controller  jinit_c_prep_controller
  #define _jinit_c_coef_controller  jinit_c_coef_controller
  #define _jinit_color_converter  jinit_color_converter
  #define _jinit_downsampler  jinit_downsampler
  #define _jinit_forward_dct  jinit_forward_dct
  #ifdef C_LOSSLESS_SUPPORTED
  #define _jinit_c_diff_controller  jinit_c_diff_controller
  #define _jinit_lossless_compressor  jinit_lossless_compressor
  #endif
  
  #define _jinit_d_main_controller  jinit_d_main_controller
  #define _jinit_d_coef_controller  jinit_d_coef_controller
  #define _jinit_d_post_controller  jinit_d_post_controller
  #define _jinit_inverse_dct  jinit_inverse_dct
  #define _jinit_upsampler  jinit_upsampler
  #define _jinit_color_deconverter  jinit_color_deconverter
  #define _jinit_1pass_quantizer  jinit_1pass_quantizer
  #define _jinit_2pass_quantizer  jinit_2pass_quantizer
  #define _jinit_merged_upsampler  jinit_merged_upsampler
  #ifdef D_LOSSLESS_SUPPORTED
  #define _jinit_d_diff_controller  jinit_d_diff_controller
  #define _jinit_lossless_decompressor  jinit_lossless_decompressor
  #endif
  
  #define _jcopy_sample_rows  jcopy_sample_rows
  
  /* Global internal functions (jdct.h) */
  #define _jpeg_fdct_islow  jpeg_fdct_islow
  #define _jpeg_fdct_ifast  jpeg_fdct_ifast
  
  #define _jpeg_idct_islow  jpeg_idct_islow
  #define _jpeg_idct_ifast  jpeg_idct_ifast
  #define _jpeg_idct_float  jpeg_idct_float
  #define _jpeg_idct_7x7  jpeg_idct_7x7
  #define _jpeg_idct_6x6  jpeg_idct_6x6
  #define _jpeg_idct_5x5  jpeg_idct_5x5
  #define _jpeg_idct_4x4  jpeg_idct_4x4
  #define _jpeg_idct_3x3  jpeg_idct_3x3
  #define _jpeg_idct_2x2  jpeg_idct_2x2
  #define _jpeg_idct_1x1  jpeg_idct_1x1
  #define _jpeg_idct_9x9  jpeg_idct_9x9
  #define _jpeg_idct_10x10  jpeg_idct_10x10
  #define _jpeg_idct_11x11  jpeg_idct_11x11
  #define _jpeg_idct_12x12  jpeg_idct_12x12
  #define _jpeg_idct_13x13  jpeg_idct_13x13
  #define _jpeg_idct_14x14  jpeg_idct_14x14
  #define _jpeg_idct_15x15  jpeg_idct_15x15
  #define _jpeg_idct_16x16  jpeg_idct_16x16
  
  /* Internal fields (cdjpeg.h) */
  
  /* Use the 8-bit buffer in the cjpeg_source_struct and djpeg_dest_struct
     structures. */
  #define _buffer  buffer
  
  /* Image I/O functions (cdjpeg.h) */
  #define _jinit_write_gif  jinit_write_gif
  #define _jinit_read_ppm  jinit_read_ppm
  #define _jinit_write_ppm  jinit_write_ppm
  
  #define _read_color_map  read_color_map
  
  #endif /* BITS_IN_JSAMPLE */
  
  #endif /* JSAMPLECOMP_H */
  

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