kc3-lang/libjpeg-turbo/src/jpegint.h
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Hash : e69dd40c
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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/jpegint.h
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/* * jpegint.h * * This file was part of the Independent JPEG Group's software: * Copyright (C) 1991-1997, Thomas G. Lane. * Modified 1997-2009 by Guido Vollbeding. * Lossless JPEG Modifications: * Copyright (C) 1999, Ken Murchison. * libjpeg-turbo Modifications: * Copyright (C) 2015-2017, 2019, 2021-2022, D. R. Commander. * Copyright (C) 2015, Google, Inc. * Copyright (C) 2021, Alex Richardson. * For conditions of distribution and use, see the accompanying README.ijg * file. * * This file provides common declarations for the various JPEG modules. * These declarations are considered internal to the JPEG library; most * applications using the library shouldn't need to include this file. */ /* Representation of a spatial difference value. * This should be a signed value of at least 16 bits; int is usually OK. */ typedef int JDIFF; typedef JDIFF FAR *JDIFFROW; /* pointer to one row of difference values */ typedef JDIFFROW *JDIFFARRAY; /* ptr to some rows (a 2-D diff array) */ typedef JDIFFARRAY *JDIFFIMAGE; /* a 3-D diff array: top index is color */ /* Declarations for both compression & decompression */ typedef enum { /* Operating modes for buffer controllers */ JBUF_PASS_THRU, /* Plain stripwise operation */ /* Remaining modes require a full-image buffer to have been created */ JBUF_SAVE_SOURCE, /* Run source subobject only, save output */ JBUF_CRANK_DEST, /* Run dest subobject only, using saved data */ JBUF_SAVE_AND_PASS /* Run both subobjects, save output */ } J_BUF_MODE; /* Values of global_state field (jdapi.c has some dependencies on ordering!) */ #define CSTATE_START 100 /* after create_compress */ #define CSTATE_SCANNING 101 /* start_compress done, write_scanlines OK */ #define CSTATE_RAW_OK 102 /* start_compress done, write_raw_data OK */ #define CSTATE_WRCOEFS 103 /* jpeg_write_coefficients done */ #define DSTATE_START 200 /* after create_decompress */ #define DSTATE_INHEADER 201 /* reading header markers, no SOS yet */ #define DSTATE_READY 202 /* found SOS, ready for start_decompress */ #define DSTATE_PRELOAD 203 /* reading multiscan file in start_decompress*/ #define DSTATE_PRESCAN 204 /* performing dummy pass for 2-pass quant */ #define DSTATE_SCANNING 205 /* start_decompress done, read_scanlines OK */ #define DSTATE_RAW_OK 206 /* start_decompress done, read_raw_data OK */ #define DSTATE_BUFIMAGE 207 /* expecting jpeg_start_output */ #define DSTATE_BUFPOST 208 /* looking for SOS/EOI in jpeg_finish_output */ #define DSTATE_RDCOEFS 209 /* reading file in jpeg_read_coefficients */ #define DSTATE_STOPPING 210 /* looking for EOI in jpeg_finish_decompress */ /* JLONG must hold at least signed 32-bit values. */ typedef long JLONG; /* JUINTPTR must hold pointer values. */ #ifdef __UINTPTR_TYPE__ /* * __UINTPTR_TYPE__ is GNU-specific and available in GCC 4.6+ and Clang 3.0+. * Fortunately, that is sufficient to support the few architectures for which * sizeof(void *) != sizeof(size_t). The only other options would require C99 * or Clang-specific builtins. */ typedef __UINTPTR_TYPE__ JUINTPTR; #else typedef size_t JUINTPTR; #endif #define IsExtRGB(cs) \ (cs == JCS_RGB || (cs >= JCS_EXT_RGB && cs <= JCS_EXT_ARGB)) /* * Left shift macro that handles a negative operand without causing any * sanitizer warnings */ #define LEFT_SHIFT(a, b) ((JLONG)((unsigned long)(a) << (b))) /* Declarations for compression modules */ /* Master control module */ struct jpeg_comp_master { void (*prepare_for_pass) (j_compress_ptr cinfo); void (*pass_startup) (j_compress_ptr cinfo); void (*finish_pass) (j_compress_ptr cinfo); /* State variables made visible to other modules */ boolean call_pass_startup; /* True if pass_startup must be called */ boolean is_last_pass; /* True during last pass */ boolean lossless; /* True if lossless mode is enabled */ }; /* Main buffer control (downsampled-data buffer) */ struct jpeg_c_main_controller { void (*start_pass) (j_compress_ptr cinfo, J_BUF_MODE pass_mode); void (*process_data) (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail); void (*process_data_12) (j_compress_ptr cinfo, J12SAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail); #ifdef C_LOSSLESS_SUPPORTED void (*process_data_16) (j_compress_ptr cinfo, J16SAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail); #endif }; /* Compression preprocessing (downsampling input buffer control) */ struct jpeg_c_prep_controller { void (*start_pass) (j_compress_ptr cinfo, J_BUF_MODE pass_mode); void (*pre_process_data) (j_compress_ptr cinfo, JSAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail, JSAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, JDIMENSION out_row_groups_avail); void (*pre_process_data_12) (j_compress_ptr cinfo, J12SAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail, J12SAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, JDIMENSION out_row_groups_avail); #ifdef C_LOSSLESS_SUPPORTED void (*pre_process_data_16) (j_compress_ptr cinfo, J16SAMPARRAY input_buf, JDIMENSION *in_row_ctr, JDIMENSION in_rows_avail, J16SAMPIMAGE output_buf, JDIMENSION *out_row_group_ctr, JDIMENSION out_row_groups_avail); #endif }; /* Lossy mode: Coefficient buffer control * Lossless mode: Difference buffer control */ struct jpeg_c_coef_controller { void (*start_pass) (j_compress_ptr cinfo, J_BUF_MODE pass_mode); boolean (*compress_data) (j_compress_ptr cinfo, JSAMPIMAGE input_buf); boolean (*compress_data_12) (j_compress_ptr cinfo, J12SAMPIMAGE input_buf); #ifdef C_LOSSLESS_SUPPORTED boolean (*compress_data_16) (j_compress_ptr cinfo, J16SAMPIMAGE input_buf); #endif }; /* Colorspace conversion */ struct jpeg_color_converter { void (*start_pass) (j_compress_ptr cinfo); void (*color_convert) (j_compress_ptr cinfo, JSAMPARRAY input_buf, JSAMPIMAGE output_buf, JDIMENSION output_row, int num_rows); void (*color_convert_12) (j_compress_ptr cinfo, J12SAMPARRAY input_buf, J12SAMPIMAGE output_buf, JDIMENSION output_row, int num_rows); #ifdef C_LOSSLESS_SUPPORTED void (*color_convert_16) (j_compress_ptr cinfo, J16SAMPARRAY input_buf, J16SAMPIMAGE output_buf, JDIMENSION output_row, int num_rows); #endif }; /* Downsampling */ struct jpeg_downsampler { void (*start_pass) (j_compress_ptr cinfo); void (*downsample) (j_compress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION in_row_index, JSAMPIMAGE output_buf, JDIMENSION out_row_group_index); void (*downsample_12) (j_compress_ptr cinfo, J12SAMPIMAGE input_buf, JDIMENSION in_row_index, J12SAMPIMAGE output_buf, JDIMENSION out_row_group_index); #ifdef C_LOSSLESS_SUPPORTED void (*downsample_16) (j_compress_ptr cinfo, J16SAMPIMAGE input_buf, JDIMENSION in_row_index, J16SAMPIMAGE output_buf, JDIMENSION out_row_group_index); #endif boolean need_context_rows; /* TRUE if need rows above & below */ }; /* Lossy mode: Forward DCT (also controls coefficient quantization) * Lossless mode: Prediction, sample differencing, and point transform */ struct jpeg_forward_dct { void (*start_pass) (j_compress_ptr cinfo); /* Lossy mode */ /* perhaps this should be an array??? */ void (*forward_DCT) (j_compress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY sample_data, JBLOCKROW coef_blocks, JDIMENSION start_row, JDIMENSION start_col, JDIMENSION num_blocks); void (*forward_DCT_12) (j_compress_ptr cinfo, jpeg_component_info *compptr, J12SAMPARRAY sample_data, JBLOCKROW coef_blocks, JDIMENSION start_row, JDIMENSION start_col, JDIMENSION num_blocks); }; /* Entropy encoding */ struct jpeg_entropy_encoder { void (*start_pass) (j_compress_ptr cinfo, boolean gather_statistics); /* Lossy mode */ boolean (*encode_mcu) (j_compress_ptr cinfo, JBLOCKROW *MCU_data); /* Lossless mode */ JDIMENSION (*encode_mcus) (j_compress_ptr cinfo, JDIFFIMAGE diff_buf, JDIMENSION MCU_row_num, JDIMENSION MCU_col_num, JDIMENSION nMCU); void (*finish_pass) (j_compress_ptr cinfo); }; /* Marker writing */ struct jpeg_marker_writer { void (*write_file_header) (j_compress_ptr cinfo); void (*write_frame_header) (j_compress_ptr cinfo); void (*write_scan_header) (j_compress_ptr cinfo); void (*write_file_trailer) (j_compress_ptr cinfo); void (*write_tables_only) (j_compress_ptr cinfo); /* These routines are exported to allow insertion of extra markers */ /* Probably only COM and APPn markers should be written this way */ void (*write_marker_header) (j_compress_ptr cinfo, int marker, unsigned int datalen); void (*write_marker_byte) (j_compress_ptr cinfo, int val); }; /* Declarations for decompression modules */ /* Master control module */ struct jpeg_decomp_master { void (*prepare_for_output_pass) (j_decompress_ptr cinfo); void (*finish_output_pass) (j_decompress_ptr cinfo); /* State variables made visible to other modules */ boolean is_dummy_pass; /* True during 1st pass for 2-pass quant */ boolean lossless; /* True if decompressing a lossless image */ /* Partial decompression variables */ JDIMENSION first_iMCU_col; JDIMENSION last_iMCU_col; JDIMENSION first_MCU_col[MAX_COMPONENTS]; JDIMENSION last_MCU_col[MAX_COMPONENTS]; boolean jinit_upsampler_no_alloc; /* Last iMCU row that was successfully decoded */ JDIMENSION last_good_iMCU_row; }; /* Input control module */ struct jpeg_input_controller { int (*consume_input) (j_decompress_ptr cinfo); void (*reset_input_controller) (j_decompress_ptr cinfo); void (*start_input_pass) (j_decompress_ptr cinfo); void (*finish_input_pass) (j_decompress_ptr cinfo); /* State variables made visible to other modules */ boolean has_multiple_scans; /* True if file has multiple scans */ boolean eoi_reached; /* True when EOI has been consumed */ }; /* Main buffer control (downsampled-data buffer) */ struct jpeg_d_main_controller { void (*start_pass) (j_decompress_ptr cinfo, J_BUF_MODE pass_mode); void (*process_data) (j_decompress_ptr cinfo, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); void (*process_data_12) (j_decompress_ptr cinfo, J12SAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); #ifdef D_LOSSLESS_SUPPORTED void (*process_data_16) (j_decompress_ptr cinfo, J16SAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); #endif }; /* Lossy mode: Coefficient buffer control * Lossless mode: Difference buffer control */ struct jpeg_d_coef_controller { void (*start_input_pass) (j_decompress_ptr cinfo); int (*consume_data) (j_decompress_ptr cinfo); void (*start_output_pass) (j_decompress_ptr cinfo); int (*decompress_data) (j_decompress_ptr cinfo, JSAMPIMAGE output_buf); int (*decompress_data_12) (j_decompress_ptr cinfo, J12SAMPIMAGE output_buf); #ifdef D_LOSSLESS_SUPPORTED int (*decompress_data_16) (j_decompress_ptr cinfo, J16SAMPIMAGE output_buf); #endif /* These variables keep track of the current location of the input side. */ /* cinfo->input_iMCU_row is also used for this. */ JDIMENSION MCU_ctr; /* counts MCUs processed in current row */ int MCU_vert_offset; /* counts MCU rows within iMCU row */ int MCU_rows_per_iMCU_row; /* number of such rows needed */ /* The output side's location is represented by cinfo->output_iMCU_row. */ /* Lossy mode */ /* Pointer to array of coefficient virtual arrays, or NULL if none */ jvirt_barray_ptr *coef_arrays; }; /* Decompression postprocessing (color quantization buffer control) */ struct jpeg_d_post_controller { void (*start_pass) (j_decompress_ptr cinfo, J_BUF_MODE pass_mode); void (*post_process_data) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); void (*post_process_data_12) (j_decompress_ptr cinfo, J12SAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, J12SAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); #ifdef D_LOSSLESS_SUPPORTED void (*post_process_data_16) (j_decompress_ptr cinfo, J16SAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, J16SAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); #endif }; /* Marker reading & parsing */ struct jpeg_marker_reader { void (*reset_marker_reader) (j_decompress_ptr cinfo); /* Read markers until SOS or EOI. * Returns same codes as are defined for jpeg_consume_input: * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI. */ int (*read_markers) (j_decompress_ptr cinfo); /* Read a restart marker --- exported for use by entropy decoder only */ jpeg_marker_parser_method read_restart_marker; /* State of marker reader --- nominally internal, but applications * supplying COM or APPn handlers might like to know the state. */ boolean saw_SOI; /* found SOI? */ boolean saw_SOF; /* found SOF? */ int next_restart_num; /* next restart number expected (0-7) */ unsigned int discarded_bytes; /* # of bytes skipped looking for a marker */ }; /* Entropy decoding */ struct jpeg_entropy_decoder { void (*start_pass) (j_decompress_ptr cinfo); /* Lossy mode */ boolean (*decode_mcu) (j_decompress_ptr cinfo, JBLOCKROW *MCU_data); /* Lossless mode */ JDIMENSION (*decode_mcus) (j_decompress_ptr cinfo, JDIFFIMAGE diff_buf, JDIMENSION MCU_row_num, JDIMENSION MCU_col_num, JDIMENSION nMCU); boolean (*process_restart) (j_decompress_ptr cinfo); /* This is here to share code between baseline and progressive decoders; */ /* other modules probably should not use it */ boolean insufficient_data; /* set TRUE after emitting warning */ }; /* Lossy mode: Inverse DCT (also performs dequantization) * Lossless mode: Prediction, sample undifferencing, point transform, and * sample size scaling */ typedef void (*inverse_DCT_method_ptr) (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col); typedef void (*inverse_DCT_12_method_ptr) (j_decompress_ptr cinfo, jpeg_component_info *compptr, JCOEFPTR coef_block, J12SAMPARRAY output_buf, JDIMENSION output_col); struct jpeg_inverse_dct { void (*start_pass) (j_decompress_ptr cinfo); /* Lossy mode */ /* It is useful to allow each component to have a separate IDCT method. */ inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS]; inverse_DCT_12_method_ptr inverse_DCT_12[MAX_COMPONENTS]; }; /* Upsampling (note that upsampler must also call color converter) */ struct jpeg_upsampler { void (*start_pass) (j_decompress_ptr cinfo); void (*upsample) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); void (*upsample_12) (j_decompress_ptr cinfo, J12SAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, J12SAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); #ifdef D_LOSSLESS_SUPPORTED void (*upsample_16) (j_decompress_ptr cinfo, J16SAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION in_row_groups_avail, J16SAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail); #endif boolean need_context_rows; /* TRUE if need rows above & below */ }; /* Colorspace conversion */ struct jpeg_color_deconverter { void (*start_pass) (j_decompress_ptr cinfo); void (*color_convert) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION input_row, JSAMPARRAY output_buf, int num_rows); void (*color_convert_12) (j_decompress_ptr cinfo, J12SAMPIMAGE input_buf, JDIMENSION input_row, J12SAMPARRAY output_buf, int num_rows); #ifdef D_LOSSLESS_SUPPORTED void (*color_convert_16) (j_decompress_ptr cinfo, J16SAMPIMAGE input_buf, JDIMENSION input_row, J16SAMPARRAY output_buf, int num_rows); #endif }; /* Color quantization or color precision reduction */ struct jpeg_color_quantizer { void (*start_pass) (j_decompress_ptr cinfo, boolean is_pre_scan); void (*color_quantize) (j_decompress_ptr cinfo, JSAMPARRAY input_buf, JSAMPARRAY output_buf, int num_rows); void (*color_quantize_12) (j_decompress_ptr cinfo, J12SAMPARRAY input_buf, J12SAMPARRAY output_buf, int num_rows); void (*finish_pass) (j_decompress_ptr cinfo); void (*new_color_map) (j_decompress_ptr cinfo); }; /* Miscellaneous useful macros */ #undef MAX #define MAX(a, b) ((a) > (b) ? (a) : (b)) #undef MIN #define MIN(a, b) ((a) < (b) ? (a) : (b)) /* We assume that right shift corresponds to signed division by 2 with * rounding towards minus infinity. This is correct for typical "arithmetic * shift" instructions that shift in copies of the sign bit. But some * C compilers implement >> with an unsigned shift. For these machines you * must define RIGHT_SHIFT_IS_UNSIGNED. * RIGHT_SHIFT provides a proper signed right shift of a JLONG quantity. * It is only applied with constant shift counts. SHIFT_TEMPS must be * included in the variables of any routine using RIGHT_SHIFT. */ #ifdef RIGHT_SHIFT_IS_UNSIGNED #define SHIFT_TEMPS JLONG shift_temp; #define RIGHT_SHIFT(x, shft) \ ((shift_temp = (x)) < 0 ? \ (shift_temp >> (shft)) | ((~((JLONG)0)) << (32 - (shft))) : \ (shift_temp >> (shft))) #else #define SHIFT_TEMPS #define RIGHT_SHIFT(x, shft) ((x) >> (shft)) #endif /* Compression module initialization routines */ EXTERN(void) jinit_compress_master(j_compress_ptr cinfo); EXTERN(void) jinit_c_master_control(j_compress_ptr cinfo, boolean transcode_only); EXTERN(void) jinit_c_main_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_c_main_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_c_prep_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_c_prep_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_c_coef_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_c_coef_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_color_converter(j_compress_ptr cinfo); EXTERN(void) j12init_color_converter(j_compress_ptr cinfo); EXTERN(void) jinit_downsampler(j_compress_ptr cinfo); EXTERN(void) j12init_downsampler(j_compress_ptr cinfo); EXTERN(void) jinit_forward_dct(j_compress_ptr cinfo); EXTERN(void) j12init_forward_dct(j_compress_ptr cinfo); EXTERN(void) jinit_huff_encoder(j_compress_ptr cinfo); EXTERN(void) jinit_phuff_encoder(j_compress_ptr cinfo); EXTERN(void) jinit_arith_encoder(j_compress_ptr cinfo); EXTERN(void) jinit_marker_writer(j_compress_ptr cinfo); #ifdef C_LOSSLESS_SUPPORTED EXTERN(void) j16init_c_main_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j16init_c_prep_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j16init_color_converter(j_compress_ptr cinfo); EXTERN(void) j16init_downsampler(j_compress_ptr cinfo); EXTERN(void) jinit_c_diff_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_c_diff_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j16init_c_diff_controller(j_compress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_lhuff_encoder(j_compress_ptr cinfo); EXTERN(void) jinit_lossless_compressor(j_compress_ptr cinfo); EXTERN(void) j12init_lossless_compressor(j_compress_ptr cinfo); EXTERN(void) j16init_lossless_compressor(j_compress_ptr cinfo); #endif /* Decompression module initialization routines */ EXTERN(void) jinit_master_decompress(j_decompress_ptr cinfo); EXTERN(void) jinit_d_main_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_d_main_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_d_coef_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_d_coef_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_d_post_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_d_post_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_input_controller(j_decompress_ptr cinfo); EXTERN(void) jinit_marker_reader(j_decompress_ptr cinfo); EXTERN(void) jinit_huff_decoder(j_decompress_ptr cinfo); EXTERN(void) jinit_phuff_decoder(j_decompress_ptr cinfo); EXTERN(void) jinit_arith_decoder(j_decompress_ptr cinfo); EXTERN(void) jinit_inverse_dct(j_decompress_ptr cinfo); EXTERN(void) j12init_inverse_dct(j_decompress_ptr cinfo); EXTERN(void) jinit_upsampler(j_decompress_ptr cinfo); EXTERN(void) j12init_upsampler(j_decompress_ptr cinfo); EXTERN(void) jinit_color_deconverter(j_decompress_ptr cinfo); EXTERN(void) j12init_color_deconverter(j_decompress_ptr cinfo); EXTERN(void) jinit_1pass_quantizer(j_decompress_ptr cinfo); EXTERN(void) j12init_1pass_quantizer(j_decompress_ptr cinfo); EXTERN(void) jinit_2pass_quantizer(j_decompress_ptr cinfo); EXTERN(void) j12init_2pass_quantizer(j_decompress_ptr cinfo); EXTERN(void) jinit_merged_upsampler(j_decompress_ptr cinfo); EXTERN(void) j12init_merged_upsampler(j_decompress_ptr cinfo); #ifdef D_LOSSLESS_SUPPORTED EXTERN(void) j16init_d_main_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j16init_d_post_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j16init_upsampler(j_decompress_ptr cinfo); EXTERN(void) j16init_color_deconverter(j_decompress_ptr cinfo); EXTERN(void) jinit_d_diff_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j12init_d_diff_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) j16init_d_diff_controller(j_decompress_ptr cinfo, boolean need_full_buffer); EXTERN(void) jinit_lhuff_decoder(j_decompress_ptr cinfo); EXTERN(void) jinit_lossless_decompressor(j_decompress_ptr cinfo); EXTERN(void) j12init_lossless_decompressor(j_decompress_ptr cinfo); EXTERN(void) j16init_lossless_decompressor(j_decompress_ptr cinfo); #endif /* Memory manager initialization */ EXTERN(void) jinit_memory_mgr(j_common_ptr cinfo); /* Utility routines in jutils.c */ EXTERN(long) jdiv_round_up(long a, long b); EXTERN(long) jround_up(long a, long b); EXTERN(void) jcopy_sample_rows(JSAMPARRAY input_array, int source_row, JSAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols); EXTERN(void) j12copy_sample_rows(J12SAMPARRAY input_array, int source_row, J12SAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols); #if defined(C_LOSSLESS_SUPPORTED) || defined(D_LOSSLESS_SUPPORTED) EXTERN(void) j16copy_sample_rows(J16SAMPARRAY input_array, int source_row, J16SAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols); #endif EXTERN(void) jcopy_block_row(JBLOCKROW input_row, JBLOCKROW output_row, JDIMENSION num_blocks); EXTERN(void) jzero_far(void *target, size_t bytestozero); /* Constant tables in jutils.c */ #if 0 /* This table is not actually needed in v6a */ extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */ #endif extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */ /* Arithmetic coding probability estimation tables in jaricom.c */ extern const JLONG jpeg_aritab[];