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annotate mupdf-source/thirdparty/libjpeg/jpegint.h @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * jpegint.h
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3 *
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4 * Copyright (C) 1991-1997, Thomas G. Lane.
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5 * Modified 1997-2020 by Guido Vollbeding.
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6 * This file is part of the Independent JPEG Group's software.
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7 * For conditions of distribution and use, see the accompanying README file.
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8 *
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9 * This file provides common declarations for the various JPEG modules.
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10 * These declarations are considered internal to the JPEG library; most
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11 * applications using the library shouldn't need to include this file.
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12 */
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15 /* Declarations for both compression & decompression */
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17 typedef enum { /* Operating modes for buffer controllers */
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18 JBUF_PASS_THRU, /* Plain stripwise operation */
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19 /* Remaining modes require a full-image buffer to have been created */
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20 JBUF_SAVE_SOURCE, /* Run source subobject only, save output */
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21 JBUF_CRANK_DEST, /* Run dest subobject only, using saved data */
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22 JBUF_SAVE_AND_PASS /* Run both subobjects, save output */
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23 } J_BUF_MODE;
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25 /* Values of global_state field (jdapi.c has some dependencies on ordering!) */
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26 #define CSTATE_START 100 /* after create_compress */
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27 #define CSTATE_SCANNING 101 /* start_compress done, write_scanlines OK */
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28 #define CSTATE_RAW_OK 102 /* start_compress done, write_raw_data OK */
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29 #define CSTATE_WRCOEFS 103 /* jpeg_write_coefficients done */
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30 #define DSTATE_START 200 /* after create_decompress */
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31 #define DSTATE_INHEADER 201 /* reading header markers, no SOS yet */
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32 #define DSTATE_READY 202 /* found SOS, ready for start_decompress */
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33 #define DSTATE_PRELOAD 203 /* reading multiscan file in start_decompress*/
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34 #define DSTATE_PRESCAN 204 /* performing dummy pass for 2-pass quant */
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35 #define DSTATE_SCANNING 205 /* start_decompress done, read_scanlines OK */
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36 #define DSTATE_RAW_OK 206 /* start_decompress done, read_raw_data OK */
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37 #define DSTATE_BUFIMAGE 207 /* expecting jpeg_start_output */
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38 #define DSTATE_BUFPOST 208 /* looking for SOS/EOI in jpeg_finish_output */
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39 #define DSTATE_RDCOEFS 209 /* reading file in jpeg_read_coefficients */
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40 #define DSTATE_STOPPING 210 /* looking for EOI in jpeg_finish_decompress */
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43 /* Declarations for compression modules */
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45 /* Master control module */
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46 struct jpeg_comp_master {
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47 JMETHOD(void, prepare_for_pass, (j_compress_ptr cinfo));
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48 JMETHOD(void, pass_startup, (j_compress_ptr cinfo));
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49 JMETHOD(void, finish_pass, (j_compress_ptr cinfo));
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51 /* State variables made visible to other modules */
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52 boolean call_pass_startup; /* True if pass_startup must be called */
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53 boolean is_last_pass; /* True during last pass */
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54 };
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56 /* Main buffer control (downsampled-data buffer) */
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57 struct jpeg_c_main_controller {
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58 JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
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59 JMETHOD(void, process_data, (j_compress_ptr cinfo,
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60 JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
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61 JDIMENSION in_rows_avail));
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62 };
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64 /* Compression preprocessing (downsampling input buffer control) */
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65 struct jpeg_c_prep_controller {
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66 JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
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67 JMETHOD(void, pre_process_data, (j_compress_ptr cinfo,
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68 JSAMPARRAY input_buf,
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69 JDIMENSION *in_row_ctr,
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70 JDIMENSION in_rows_avail,
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71 JSAMPIMAGE output_buf,
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72 JDIMENSION *out_row_group_ctr,
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73 JDIMENSION out_row_groups_avail));
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74 };
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76 /* Coefficient buffer control */
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77 struct jpeg_c_coef_controller {
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78 JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
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79 JMETHOD(boolean, compress_data, (j_compress_ptr cinfo,
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80 JSAMPIMAGE input_buf));
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81 };
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82
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83 /* Colorspace conversion */
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84 struct jpeg_color_converter {
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85 JMETHOD(void, start_pass, (j_compress_ptr cinfo));
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86 JMETHOD(void, color_convert, (j_compress_ptr cinfo,
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87 JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
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88 JDIMENSION output_row, int num_rows));
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89 };
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90
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91 /* Downsampling */
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92 struct jpeg_downsampler {
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93 JMETHOD(void, start_pass, (j_compress_ptr cinfo));
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94 JMETHOD(void, downsample, (j_compress_ptr cinfo,
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95 JSAMPIMAGE input_buf, JDIMENSION in_row_index,
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diff changeset
96 JSAMPIMAGE output_buf,
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parents:
diff changeset
97 JDIMENSION out_row_group_index));
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parents:
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98
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parents:
diff changeset
99 boolean need_context_rows; /* TRUE if need rows above & below */
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parents:
diff changeset
100 };
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parents:
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101
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parents:
diff changeset
102 /* Forward DCT (also controls coefficient quantization) */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
103 typedef JMETHOD(void, forward_DCT_ptr,
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parents:
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104 (j_compress_ptr cinfo, jpeg_component_info * compptr,
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
105 JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
106 JDIMENSION start_col, JDIMENSION num_blocks));
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parents:
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107
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parents:
diff changeset
108 struct jpeg_forward_dct {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
109 JMETHOD(void, start_pass, (j_compress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
110 /* It is useful to allow each component to have a separate FDCT method. */
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parents:
diff changeset
111 forward_DCT_ptr forward_DCT[MAX_COMPONENTS];
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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112 };
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113
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parents:
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114 /* Entropy encoding */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
115 struct jpeg_entropy_encoder {
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parents:
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116 JMETHOD(void, start_pass, (j_compress_ptr cinfo, boolean gather_statistics));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
117 JMETHOD(boolean, encode_mcu, (j_compress_ptr cinfo, JBLOCKARRAY MCU_data));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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118 JMETHOD(void, finish_pass, (j_compress_ptr cinfo));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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119 };
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parents:
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120
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parents:
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121 /* Marker writing */
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parents:
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122 struct jpeg_marker_writer {
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parents:
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123 JMETHOD(void, write_file_header, (j_compress_ptr cinfo));
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parents:
diff changeset
124 JMETHOD(void, write_frame_header, (j_compress_ptr cinfo));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
125 JMETHOD(void, write_scan_header, (j_compress_ptr cinfo));
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parents:
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126 JMETHOD(void, write_file_trailer, (j_compress_ptr cinfo));
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parents:
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127 JMETHOD(void, write_tables_only, (j_compress_ptr cinfo));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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128 /* These routines are exported to allow insertion of extra markers */
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parents:
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129 /* Probably only COM and APPn markers should be written this way */
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parents:
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130 JMETHOD(void, write_marker_header, (j_compress_ptr cinfo, int marker,
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Franz Glasner <fzglas.hg@dom66.de>
parents:
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131 unsigned int datalen));
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parents:
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132 JMETHOD(void, write_marker_byte, (j_compress_ptr cinfo, int val));
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parents:
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133 };
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parents:
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134
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parents:
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135
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parents:
diff changeset
136 /* Declarations for decompression modules */
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parents:
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137
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parents:
diff changeset
138 /* Master control module */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
139 struct jpeg_decomp_master {
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parents:
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140 JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
141 JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo));
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parents:
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142
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parents:
diff changeset
143 /* State variables made visible to other modules */
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parents:
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144 boolean is_dummy_pass; /* True during 1st pass for 2-pass quant */
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parents:
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145 };
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parents:
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146
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parents:
diff changeset
147 /* Input control module */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
148 struct jpeg_input_controller {
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parents:
diff changeset
149 JMETHOD(int, consume_input, (j_decompress_ptr cinfo));
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parents:
diff changeset
150 JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo));
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parents:
diff changeset
151 JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
152 JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo));
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153
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parents:
diff changeset
154 /* State variables made visible to other modules */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
155 boolean has_multiple_scans; /* True if file has multiple scans */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
156 boolean eoi_reached; /* True when EOI has been consumed */
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parents:
diff changeset
157 };
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parents:
diff changeset
158
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parents:
diff changeset
159 /* Main buffer control (downsampled-data buffer) */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
160 struct jpeg_d_main_controller {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
161 JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
162 JMETHOD(void, process_data, (j_decompress_ptr cinfo,
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parents:
diff changeset
163 JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
164 JDIMENSION out_rows_avail));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
165 };
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parents:
diff changeset
166
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
167 /* Coefficient buffer control */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
168 struct jpeg_d_coef_controller {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
169 JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
170 JMETHOD(int, consume_data, (j_decompress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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parents:
diff changeset
171 JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
172 JMETHOD(int, decompress_data, (j_decompress_ptr cinfo,
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
173 JSAMPIMAGE output_buf));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
174 /* Pointer to array of coefficient virtual arrays, or NULL if none */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
175 jvirt_barray_ptr *coef_arrays;
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parents:
diff changeset
176 };
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parents:
diff changeset
177
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parents:
diff changeset
178 /* Decompression postprocessing (color quantization buffer control) */
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
179 struct jpeg_d_post_controller {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
180 JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
181 JMETHOD(void, post_process_data, (j_decompress_ptr cinfo,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
182 JSAMPIMAGE input_buf,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
183 JDIMENSION *in_row_group_ctr,
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parents:
diff changeset
184 JDIMENSION in_row_groups_avail,
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parents:
diff changeset
185 JSAMPARRAY output_buf,
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
186 JDIMENSION *out_row_ctr,
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
187 JDIMENSION out_rows_avail));
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
188 };
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parents:
diff changeset
189
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Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
190 /* Marker reading & parsing */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
191 struct jpeg_marker_reader {
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
192 JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
193 /* Read markers until SOS or EOI.
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
Franz Glasner <fzglas.hg@dom66.de>
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194 * Returns same codes as are defined for jpeg_consume_input:
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195 * JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
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196 */
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197 JMETHOD(int, read_markers, (j_decompress_ptr cinfo));
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198 /* Read a restart marker --- exported for use by entropy decoder only */
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199 jpeg_marker_parser_method read_restart_marker;
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200
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201 /* State of marker reader --- nominally internal, but applications
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202 * supplying COM or APPn handlers might like to know the state.
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203 */
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204 boolean saw_SOI; /* found SOI? */
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205 boolean saw_SOF; /* found SOF? */
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206 int next_restart_num; /* next restart number expected (0-7) */
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207 unsigned int discarded_bytes; /* # of bytes skipped looking for a marker */
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208 };
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209
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210 /* Entropy decoding */
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211 struct jpeg_entropy_decoder {
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212 JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
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213 JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo, JBLOCKARRAY MCU_data));
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214 JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));
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215 };
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216
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217 /* Inverse DCT (also performs dequantization) */
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218 typedef JMETHOD(void, inverse_DCT_method_ptr,
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219 (j_decompress_ptr cinfo, jpeg_component_info * compptr,
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220 JCOEFPTR coef_block,
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221 JSAMPARRAY output_buf, JDIMENSION output_col));
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222
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223 struct jpeg_inverse_dct {
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224 JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
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225 /* It is useful to allow each component to have a separate IDCT method. */
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226 inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS];
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227 };
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228
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229 /* Upsampling (note that upsampler must also call color converter) */
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230 struct jpeg_upsampler {
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231 JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
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232 JMETHOD(void, upsample, (j_decompress_ptr cinfo,
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233 JSAMPIMAGE input_buf,
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234 JDIMENSION *in_row_group_ctr,
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235 JDIMENSION in_row_groups_avail,
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236 JSAMPARRAY output_buf,
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237 JDIMENSION *out_row_ctr,
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238 JDIMENSION out_rows_avail));
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239
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240 boolean need_context_rows; /* TRUE if need rows above & below */
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241 };
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242
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243 /* Colorspace conversion */
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244 struct jpeg_color_deconverter {
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245 JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
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246 JMETHOD(void, color_convert, (j_decompress_ptr cinfo,
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247 JSAMPIMAGE input_buf, JDIMENSION input_row,
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248 JSAMPARRAY output_buf, int num_rows));
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249 };
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250
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251 /* Color quantization or color precision reduction */
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252 struct jpeg_color_quantizer {
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253 JMETHOD(void, start_pass, (j_decompress_ptr cinfo, boolean is_pre_scan));
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254 JMETHOD(void, color_quantize, (j_decompress_ptr cinfo,
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255 JSAMPARRAY input_buf, JSAMPARRAY output_buf,
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256 int num_rows));
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257 JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));
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258 JMETHOD(void, new_color_map, (j_decompress_ptr cinfo));
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259 };
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260
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261
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262 /* Definition of range extension bits for decompression processes.
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263 * See the comments with prepare_range_limit_table (in jdmaster.c)
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264 * for more info.
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265 * The recommended default value for normal applications is 2.
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266 * Applications with special requirements may use a different value.
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267 * For example, Ghostscript wants to use 3 for proper handling of
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268 * wacky images with oversize coefficient values.
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269 */
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270
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271 #define RANGE_BITS 2
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272 #define RANGE_CENTER (CENTERJSAMPLE << RANGE_BITS)
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273
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274
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275 /* Miscellaneous useful macros */
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276
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277 #undef MAX
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278 #define MAX(a,b) ((a) > (b) ? (a) : (b))
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279 #undef MIN
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280 #define MIN(a,b) ((a) < (b) ? (a) : (b))
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281
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282
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283 /* We assume that right shift corresponds to signed division by 2 with
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284 * rounding towards minus infinity. This is correct for typical "arithmetic
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285 * shift" instructions that shift in copies of the sign bit. But some
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286 * C compilers implement >> with an unsigned shift. For these machines you
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287 * must define RIGHT_SHIFT_IS_UNSIGNED.
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288 * RIGHT_SHIFT provides a proper signed right shift of an INT32 quantity.
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289 * It is only applied with constant shift counts. SHIFT_TEMPS must be
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290 * included in the variables of any routine using RIGHT_SHIFT.
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291 */
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292
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293 #ifdef RIGHT_SHIFT_IS_UNSIGNED
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294 #define SHIFT_TEMPS INT32 shift_temp;
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295 #define RIGHT_SHIFT(x,shft) \
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296 ((shift_temp = (x)) < 0 ? \
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297 (shift_temp >> (shft)) | ((~((INT32) 0)) << (32-(shft))) : \
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298 (shift_temp >> (shft)))
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299 #else
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300 #define SHIFT_TEMPS
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301 #define RIGHT_SHIFT(x,shft) ((x) >> (shft))
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302 #endif
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303
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304 /* Descale and correctly round an INT32 value that's scaled by N bits.
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305 * We assume RIGHT_SHIFT rounds towards minus infinity, so adding
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306 * the fudge factor is correct for either sign of X.
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307 */
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308
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309 #define DESCALE(x,n) RIGHT_SHIFT((x) + ((INT32) 1 << ((n)-1)), n)
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310
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311
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312 /* Short forms of external names for systems with brain-damaged linkers. */
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313
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314 #ifdef NEED_SHORT_EXTERNAL_NAMES
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315 #define jinit_compress_master jICompress
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316 #define jinit_c_master_control jICMaster
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317 #define jinit_c_main_controller jICMainC
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318 #define jinit_c_prep_controller jICPrepC
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319 #define jinit_c_coef_controller jICCoefC
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320 #define jinit_color_converter jICColor
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321 #define jinit_downsampler jIDownsampler
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322 #define jinit_forward_dct jIFDCT
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323 #define jinit_huff_encoder jIHEncoder
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324 #define jinit_arith_encoder jIAEncoder
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325 #define jinit_marker_writer jIMWriter
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326 #define jinit_master_decompress jIDMaster
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327 #define jinit_d_main_controller jIDMainC
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328 #define jinit_d_coef_controller jIDCoefC
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329 #define jinit_d_post_controller jIDPostC
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330 #define jinit_input_controller jIInCtlr
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331 #define jinit_marker_reader jIMReader
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332 #define jinit_huff_decoder jIHDecoder
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333 #define jinit_arith_decoder jIADecoder
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334 #define jinit_inverse_dct jIIDCT
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335 #define jinit_upsampler jIUpsampler
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336 #define jinit_color_deconverter jIDColor
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337 #define jinit_1pass_quantizer jI1Quant
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338 #define jinit_2pass_quantizer jI2Quant
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339 #define jinit_merged_upsampler jIMUpsampler
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340 #define jinit_memory_mgr jIMemMgr
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341 #define jdiv_round_up jDivRound
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342 #define jround_up jRound
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343 #define jzero_far jZeroFar
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344 #define jcopy_sample_rows jCopySamples
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345 #define jcopy_block_row jCopyBlocks
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346 #define jpeg_zigzag_order jZIGTable
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347 #define jpeg_natural_order jZAGTable
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348 #define jpeg_natural_order7 jZAG7Table
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349 #define jpeg_natural_order6 jZAG6Table
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350 #define jpeg_natural_order5 jZAG5Table
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351 #define jpeg_natural_order4 jZAG4Table
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352 #define jpeg_natural_order3 jZAG3Table
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353 #define jpeg_natural_order2 jZAG2Table
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354 #define jpeg_aritab jAriTab
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355 #endif /* NEED_SHORT_EXTERNAL_NAMES */
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356
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357
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358 /* On normal machines we can apply MEMCOPY() and MEMZERO() to sample arrays
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359 * and coefficient-block arrays. This won't work on 80x86 because the arrays
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360 * are FAR and we're assuming a small-pointer memory model. However, some
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361 * DOS compilers provide far-pointer versions of memcpy() and memset() even
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362 * in the small-model libraries. These will be used if USE_FMEM is defined.
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363 * Otherwise, the routines in jutils.c do it the hard way.
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364 */
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365
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366 #ifndef NEED_FAR_POINTERS /* normal case, same as regular macro */
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367 #define FMEMZERO(target,size) MEMZERO(target,size)
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368 #else /* 80x86 case */
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369 #ifdef USE_FMEM
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370 #define FMEMZERO(target,size) _fmemset((void FAR *)(target), 0, (size_t)(size))
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371 #else
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372 EXTERN(void) jzero_far JPP((void FAR * target, size_t bytestozero));
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373 #define FMEMZERO(target,size) jzero_far(target, size)
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374 #endif
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375 #endif
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376
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377
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diff changeset
378 /* Compression module initialization routines */
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diff changeset
379 EXTERN(void) jinit_compress_master JPP((j_compress_ptr cinfo));
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380 EXTERN(void) jinit_c_master_control JPP((j_compress_ptr cinfo,
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diff changeset
381 boolean transcode_only));
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diff changeset
382 EXTERN(void) jinit_c_main_controller JPP((j_compress_ptr cinfo,
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parents:
diff changeset
383 boolean need_full_buffer));
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parents:
diff changeset
384 EXTERN(void) jinit_c_prep_controller JPP((j_compress_ptr cinfo,
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parents:
diff changeset
385 boolean need_full_buffer));
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parents:
diff changeset
386 EXTERN(void) jinit_c_coef_controller JPP((j_compress_ptr cinfo,
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parents:
diff changeset
387 boolean need_full_buffer));
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parents:
diff changeset
388 EXTERN(void) jinit_color_converter JPP((j_compress_ptr cinfo));
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parents:
diff changeset
389 EXTERN(void) jinit_downsampler JPP((j_compress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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390 EXTERN(void) jinit_forward_dct JPP((j_compress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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391 EXTERN(void) jinit_huff_encoder JPP((j_compress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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392 EXTERN(void) jinit_arith_encoder JPP((j_compress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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393 EXTERN(void) jinit_marker_writer JPP((j_compress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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394 /* Decompression module initialization routines */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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395 EXTERN(void) jinit_master_decompress JPP((j_decompress_ptr cinfo));
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396 EXTERN(void) jinit_d_main_controller JPP((j_decompress_ptr cinfo,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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397 boolean need_full_buffer));
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398 EXTERN(void) jinit_d_coef_controller JPP((j_decompress_ptr cinfo,
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399 boolean need_full_buffer));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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400 EXTERN(void) jinit_d_post_controller JPP((j_decompress_ptr cinfo,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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401 boolean need_full_buffer));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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402 EXTERN(void) jinit_input_controller JPP((j_decompress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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403 EXTERN(void) jinit_marker_reader JPP((j_decompress_ptr cinfo));
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404 EXTERN(void) jinit_huff_decoder JPP((j_decompress_ptr cinfo));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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405 EXTERN(void) jinit_arith_decoder JPP((j_decompress_ptr cinfo));
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406 EXTERN(void) jinit_inverse_dct JPP((j_decompress_ptr cinfo));
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407 EXTERN(void) jinit_upsampler JPP((j_decompress_ptr cinfo));
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408 EXTERN(void) jinit_color_deconverter JPP((j_decompress_ptr cinfo));
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409 EXTERN(void) jinit_1pass_quantizer JPP((j_decompress_ptr cinfo));
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410 EXTERN(void) jinit_2pass_quantizer JPP((j_decompress_ptr cinfo));
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411 EXTERN(void) jinit_merged_upsampler JPP((j_decompress_ptr cinfo));
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412 /* Memory manager initialization */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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413 EXTERN(void) jinit_memory_mgr JPP((j_common_ptr cinfo));
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414
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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415 /* Utility routines in jutils.c */
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416 EXTERN(long) jdiv_round_up JPP((long a, long b));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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417 EXTERN(long) jround_up JPP((long a, long b));
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418 EXTERN(void) jcopy_sample_rows JPP((JSAMPARRAY input_array,
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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419 JSAMPARRAY output_array,
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420 int num_rows, JDIMENSION num_cols));
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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421 EXTERN(void) jcopy_block_row JPP((JBLOCKROW input_row, JBLOCKROW output_row,
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422 JDIMENSION num_blocks));
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423 /* Constant tables in jutils.c */
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424 #if 0 /* This table is not actually needed in v6a */
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425 extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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426 #endif
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427 extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */
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428 extern const int jpeg_natural_order7[]; /* zz to natural order for 7x7 block */
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429 extern const int jpeg_natural_order6[]; /* zz to natural order for 6x6 block */
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430 extern const int jpeg_natural_order5[]; /* zz to natural order for 5x5 block */
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431 extern const int jpeg_natural_order4[]; /* zz to natural order for 4x4 block */
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432 extern const int jpeg_natural_order3[]; /* zz to natural order for 3x3 block */
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433 extern const int jpeg_natural_order2[]; /* zz to natural order for 2x2 block */
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434
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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435 /* Arithmetic coding probability estimation tables in jaricom.c */
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436 extern const INT32 jpeg_aritab[];
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437
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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438 /* Suppress undefined-structure complaints if necessary. */
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439
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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440 #ifdef INCOMPLETE_TYPES_BROKEN
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441 #ifndef AM_MEMORY_MANAGER /* only jmemmgr.c defines these */
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442 struct jvirt_sarray_control { long dummy; };
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443 struct jvirt_barray_control { long dummy; };
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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444 #endif
b50eed0cc0ef ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
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445 #endif /* INCOMPLETE_TYPES_BROKEN */