0
|
1 |
/*
|
|
2 |
* jpegint.h
|
|
3 |
*
|
|
4 |
* Copyright (C) 1991-1997, Thomas G. Lane.
|
|
5 |
* This file is part of the Independent JPEG Group's software.
|
|
6 |
* For conditions of distribution and use, see the accompanying README file.
|
|
7 |
*
|
|
8 |
* This file provides common declarations for the various JPEG modules.
|
|
9 |
* These declarations are considered internal to the JPEG library; most
|
|
10 |
* applications using the library shouldn't need to include this file.
|
|
11 |
*/
|
|
12 |
|
|
13 |
|
|
14 |
/* Declarations for both compression & decompression */
|
|
15 |
|
|
16 |
typedef enum { /* Operating modes for buffer controllers */
|
|
17 |
JBUF_PASS_THRU, /* Plain stripwise operation */
|
|
18 |
/* Remaining modes require a full-image buffer to have been created */
|
|
19 |
JBUF_SAVE_SOURCE, /* Run source subobject only, save output */
|
|
20 |
JBUF_CRANK_DEST, /* Run dest subobject only, using saved data */
|
|
21 |
JBUF_SAVE_AND_PASS /* Run both subobjects, save output */
|
|
22 |
} J_BUF_MODE;
|
|
23 |
|
|
24 |
/* Values of global_state field (jdapi.c has some dependencies on ordering!) */
|
|
25 |
#define CSTATE_START 100 /* after create_compress */
|
|
26 |
#define CSTATE_SCANNING 101 /* start_compress done, write_scanlines OK */
|
|
27 |
#define CSTATE_RAW_OK 102 /* start_compress done, write_raw_data OK */
|
|
28 |
#define CSTATE_WRCOEFS 103 /* jpeg_write_coefficients done */
|
|
29 |
#define DSTATE_START 200 /* after create_decompress */
|
|
30 |
#define DSTATE_INHEADER 201 /* reading header markers, no SOS yet */
|
|
31 |
#define DSTATE_READY 202 /* found SOS, ready for start_decompress */
|
|
32 |
#define DSTATE_PRELOAD 203 /* reading multiscan file in start_decompress*/
|
|
33 |
#define DSTATE_PRESCAN 204 /* performing dummy pass for 2-pass quant */
|
|
34 |
#define DSTATE_SCANNING 205 /* start_decompress done, read_scanlines OK */
|
|
35 |
#define DSTATE_RAW_OK 206 /* start_decompress done, read_raw_data OK */
|
|
36 |
#define DSTATE_BUFIMAGE 207 /* expecting jpeg_start_output */
|
|
37 |
#define DSTATE_BUFPOST 208 /* looking for SOS/EOI in jpeg_finish_output */
|
|
38 |
#define DSTATE_RDCOEFS 209 /* reading file in jpeg_read_coefficients */
|
|
39 |
#define DSTATE_STOPPING 210 /* looking for EOI in jpeg_finish_decompress */
|
|
40 |
|
|
41 |
|
|
42 |
/* Declarations for compression modules */
|
|
43 |
|
|
44 |
/* Master control module */
|
|
45 |
struct jpeg_comp_master {
|
|
46 |
JMETHOD(void, prepare_for_pass, (j_compress_ptr cinfo));
|
|
47 |
JMETHOD(void, pass_startup, (j_compress_ptr cinfo));
|
|
48 |
JMETHOD(void, finish_pass, (j_compress_ptr cinfo));
|
|
49 |
|
|
50 |
/* State variables made visible to other modules */
|
|
51 |
boolean call_pass_startup; /* True if pass_startup must be called */
|
|
52 |
boolean is_last_pass; /* True during last pass */
|
|
53 |
};
|
|
54 |
|
|
55 |
/* Main buffer control (downsampled-data buffer) */
|
|
56 |
struct jpeg_c_main_controller {
|
|
57 |
JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
|
|
58 |
JMETHOD(void, process_data, (j_compress_ptr cinfo,
|
|
59 |
JSAMPARRAY input_buf, JDIMENSION *in_row_ctr,
|
|
60 |
JDIMENSION in_rows_avail));
|
|
61 |
};
|
|
62 |
|
|
63 |
/* Compression preprocessing (downsampling input buffer control) */
|
|
64 |
struct jpeg_c_prep_controller {
|
|
65 |
JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
|
|
66 |
JMETHOD(void, pre_process_data, (j_compress_ptr cinfo,
|
|
67 |
JSAMPARRAY input_buf,
|
|
68 |
JDIMENSION *in_row_ctr,
|
|
69 |
JDIMENSION in_rows_avail,
|
|
70 |
JSAMPIMAGE output_buf,
|
|
71 |
JDIMENSION *out_row_group_ctr,
|
|
72 |
JDIMENSION out_row_groups_avail));
|
|
73 |
};
|
|
74 |
|
|
75 |
/* Coefficient buffer control */
|
|
76 |
struct jpeg_c_coef_controller {
|
|
77 |
JMETHOD(void, start_pass, (j_compress_ptr cinfo, J_BUF_MODE pass_mode));
|
|
78 |
JMETHOD(boolean, compress_data, (j_compress_ptr cinfo,
|
|
79 |
JSAMPIMAGE input_buf));
|
|
80 |
};
|
|
81 |
|
|
82 |
/* Colorspace conversion */
|
|
83 |
struct jpeg_color_converter {
|
|
84 |
JMETHOD(void, start_pass, (j_compress_ptr cinfo));
|
|
85 |
JMETHOD(void, color_convert, (j_compress_ptr cinfo,
|
|
86 |
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
|
|
87 |
JDIMENSION output_row, int num_rows));
|
|
88 |
};
|
|
89 |
|
|
90 |
/* Downsampling */
|
|
91 |
struct jpeg_downsampler {
|
|
92 |
JMETHOD(void, start_pass, (j_compress_ptr cinfo));
|
|
93 |
JMETHOD(void, downsample, (j_compress_ptr cinfo,
|
|
94 |
JSAMPIMAGE input_buf, JDIMENSION in_row_index,
|
|
95 |
JSAMPIMAGE output_buf,
|
|
96 |
JDIMENSION out_row_group_index));
|
|
97 |
|
|
98 |
boolean need_context_rows; /* TRUE if need rows above & below */
|
|
99 |
};
|
|
100 |
|
|
101 |
/* Forward DCT (also controls coefficient quantization) */
|
|
102 |
struct jpeg_forward_dct {
|
|
103 |
JMETHOD(void, start_pass, (j_compress_ptr cinfo));
|
|
104 |
/* perhaps this should be an array??? */
|
|
105 |
JMETHOD(void, forward_DCT, (j_compress_ptr cinfo,
|
|
106 |
jpeg_component_info * compptr,
|
|
107 |
JSAMPARRAY sample_data, JBLOCKROW coef_blocks,
|
|
108 |
JDIMENSION start_row, JDIMENSION start_col,
|
|
109 |
JDIMENSION num_blocks));
|
|
110 |
};
|
|
111 |
|
|
112 |
/* Entropy encoding */
|
|
113 |
struct jpeg_entropy_encoder {
|
|
114 |
JMETHOD(void, start_pass, (j_compress_ptr cinfo, boolean gather_statistics));
|
|
115 |
JMETHOD(boolean, encode_mcu, (j_compress_ptr cinfo, JBLOCKROW *MCU_data));
|
|
116 |
JMETHOD(void, finish_pass, (j_compress_ptr cinfo));
|
|
117 |
};
|
|
118 |
|
|
119 |
/* Marker writing */
|
|
120 |
struct jpeg_marker_writer {
|
|
121 |
JMETHOD(void, write_file_header, (j_compress_ptr cinfo));
|
|
122 |
JMETHOD(void, write_frame_header, (j_compress_ptr cinfo));
|
|
123 |
JMETHOD(void, write_scan_header, (j_compress_ptr cinfo));
|
|
124 |
JMETHOD(void, write_file_trailer, (j_compress_ptr cinfo));
|
|
125 |
JMETHOD(void, write_tables_only, (j_compress_ptr cinfo));
|
|
126 |
/* These routines are exported to allow insertion of extra markers */
|
|
127 |
/* Probably only COM and APPn markers should be written this way */
|
|
128 |
JMETHOD(void, write_marker_header, (j_compress_ptr cinfo, int marker,
|
|
129 |
unsigned int datalen));
|
|
130 |
JMETHOD(void, write_marker_byte, (j_compress_ptr cinfo, int val));
|
|
131 |
};
|
|
132 |
|
|
133 |
|
|
134 |
/* Declarations for decompression modules */
|
|
135 |
|
|
136 |
/* Master control module */
|
|
137 |
struct jpeg_decomp_master {
|
|
138 |
JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo));
|
|
139 |
JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo));
|
|
140 |
|
|
141 |
/* State variables made visible to other modules */
|
|
142 |
boolean is_dummy_pass; /* True during 1st pass for 2-pass quant */
|
|
143 |
};
|
|
144 |
|
|
145 |
/* Input control module */
|
|
146 |
struct jpeg_input_controller {
|
|
147 |
JMETHOD(int, consume_input, (j_decompress_ptr cinfo));
|
|
148 |
JMETHOD(void, reset_input_controller, (j_decompress_ptr cinfo));
|
|
149 |
JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
|
|
150 |
JMETHOD(void, finish_input_pass, (j_decompress_ptr cinfo));
|
|
151 |
|
|
152 |
/* State variables made visible to other modules */
|
|
153 |
boolean has_multiple_scans; /* True if file has multiple scans */
|
|
154 |
boolean eoi_reached; /* True when EOI has been consumed */
|
|
155 |
};
|
|
156 |
|
|
157 |
/* Main buffer control (downsampled-data buffer) */
|
|
158 |
struct jpeg_d_main_controller {
|
|
159 |
JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
|
|
160 |
JMETHOD(void, process_data, (j_decompress_ptr cinfo,
|
|
161 |
JSAMPARRAY output_buf, JDIMENSION *out_row_ctr,
|
|
162 |
JDIMENSION out_rows_avail));
|
|
163 |
};
|
|
164 |
|
|
165 |
/* Coefficient buffer control */
|
|
166 |
struct jpeg_d_coef_controller {
|
|
167 |
JMETHOD(void, start_input_pass, (j_decompress_ptr cinfo));
|
|
168 |
JMETHOD(int, consume_data, (j_decompress_ptr cinfo));
|
|
169 |
JMETHOD(void, start_output_pass, (j_decompress_ptr cinfo));
|
|
170 |
JMETHOD(int, decompress_data, (j_decompress_ptr cinfo,
|
|
171 |
JSAMPIMAGE output_buf));
|
|
172 |
/* Pointer to array of coefficient virtual arrays, or NULL if none */
|
|
173 |
jvirt_barray_ptr *coef_arrays;
|
|
174 |
};
|
|
175 |
|
|
176 |
/* Decompression postprocessing (color quantization buffer control) */
|
|
177 |
struct jpeg_d_post_controller {
|
|
178 |
JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode));
|
|
179 |
JMETHOD(void, post_process_data, (j_decompress_ptr cinfo,
|
|
180 |
JSAMPIMAGE input_buf,
|
|
181 |
JDIMENSION *in_row_group_ctr,
|
|
182 |
JDIMENSION in_row_groups_avail,
|
|
183 |
JSAMPARRAY output_buf,
|
|
184 |
JDIMENSION *out_row_ctr,
|
|
185 |
JDIMENSION out_rows_avail));
|
|
186 |
};
|
|
187 |
|
|
188 |
/* Marker reading & parsing */
|
|
189 |
struct jpeg_marker_reader {
|
|
190 |
JMETHOD(void, reset_marker_reader, (j_decompress_ptr cinfo));
|
|
191 |
/* Read markers until SOS or EOI.
|
|
192 |
* Returns same codes as are defined for jpeg_consume_input:
|
|
193 |
* JPEG_SUSPENDED, JPEG_REACHED_SOS, or JPEG_REACHED_EOI.
|
|
194 |
*/
|
|
195 |
JMETHOD(int, read_markers, (j_decompress_ptr cinfo));
|
|
196 |
/* Read a restart marker --- exported for use by entropy decoder only */
|
|
197 |
jpeg_marker_parser_method read_restart_marker;
|
|
198 |
|
|
199 |
/* State of marker reader --- nominally internal, but applications
|
|
200 |
* supplying COM or APPn handlers might like to know the state.
|
|
201 |
*/
|
|
202 |
boolean saw_SOI; /* found SOI? */
|
|
203 |
boolean saw_SOF; /* found SOF? */
|
|
204 |
int next_restart_num; /* next restart number expected (0-7) */
|
|
205 |
unsigned int discarded_bytes; /* # of bytes skipped looking for a marker */
|
|
206 |
};
|
|
207 |
|
|
208 |
/* Entropy decoding */
|
|
209 |
struct jpeg_entropy_decoder {
|
|
210 |
JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
|
|
211 |
JMETHOD(boolean, decode_mcu, (j_decompress_ptr cinfo,
|
|
212 |
JBLOCKROW *MCU_data));
|
|
213 |
|
|
214 |
/* This is here to share code between baseline and progressive decoders; */
|
|
215 |
/* other modules probably should not use it */
|
|
216 |
boolean insufficient_data; /* set TRUE after emitting warning */
|
|
217 |
};
|
|
218 |
|
|
219 |
/* Inverse DCT (also performs dequantization) */
|
|
220 |
typedef JMETHOD(void, inverse_DCT_method_ptr,
|
|
221 |
(j_decompress_ptr cinfo, jpeg_component_info * compptr,
|
|
222 |
JCOEFPTR coef_block,
|
|
223 |
JSAMPARRAY output_buf, JDIMENSION output_col));
|
|
224 |
|
|
225 |
struct jpeg_inverse_dct {
|
|
226 |
JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
|
|
227 |
/* It is useful to allow each component to have a separate IDCT method. */
|
|
228 |
inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS];
|
|
229 |
};
|
|
230 |
|
|
231 |
/* Upsampling (note that upsampler must also call color converter) */
|
|
232 |
struct jpeg_upsampler {
|
|
233 |
JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
|
|
234 |
JMETHOD(void, upsample, (j_decompress_ptr cinfo,
|
|
235 |
JSAMPIMAGE input_buf,
|
|
236 |
JDIMENSION *in_row_group_ctr,
|
|
237 |
JDIMENSION in_row_groups_avail,
|
|
238 |
JSAMPARRAY output_buf,
|
|
239 |
JDIMENSION *out_row_ctr,
|
|
240 |
JDIMENSION out_rows_avail));
|
|
241 |
|
|
242 |
boolean need_context_rows; /* TRUE if need rows above & below */
|
|
243 |
};
|
|
244 |
|
|
245 |
/* Colorspace conversion */
|
|
246 |
struct jpeg_color_deconverter {
|
|
247 |
JMETHOD(void, start_pass, (j_decompress_ptr cinfo));
|
|
248 |
JMETHOD(void, color_convert, (j_decompress_ptr cinfo,
|
|
249 |
JSAMPIMAGE input_buf, JDIMENSION input_row,
|
|
250 |
JSAMPARRAY output_buf, int num_rows));
|
|
251 |
};
|
|
252 |
|
|
253 |
/* Color quantization or color precision reduction */
|
|
254 |
struct jpeg_color_quantizer {
|
|
255 |
JMETHOD(void, start_pass, (j_decompress_ptr cinfo, boolean is_pre_scan));
|
|
256 |
JMETHOD(void, color_quantize, (j_decompress_ptr cinfo,
|
|
257 |
JSAMPARRAY input_buf, JSAMPARRAY output_buf,
|
|
258 |
int num_rows));
|
|
259 |
JMETHOD(void, finish_pass, (j_decompress_ptr cinfo));
|
|
260 |
JMETHOD(void, new_color_map, (j_decompress_ptr cinfo));
|
|
261 |
};
|
|
262 |
|
|
263 |
|
|
264 |
/* Miscellaneous useful macros */
|
|
265 |
|
|
266 |
#undef MAX
|
|
267 |
#define MAX(a,b) ((a) > (b) ? (a) : (b))
|
|
268 |
#undef MIN
|
|
269 |
#define MIN(a,b) ((a) < (b) ? (a) : (b))
|
|
270 |
|
|
271 |
|
|
272 |
/* We assume that right shift corresponds to signed division by 2 with
|
|
273 |
* rounding towards minus infinity. This is correct for typical "arithmetic
|
|
274 |
* shift" instructions that shift in copies of the sign bit. But some
|
|
275 |
* C compilers implement >> with an unsigned shift. For these machines you
|
|
276 |
* must define RIGHT_SHIFT_IS_UNSIGNED.
|
|
277 |
* RIGHT_SHIFT provides a proper signed right shift of an INT32 quantity.
|
|
278 |
* It is only applied with constant shift counts. SHIFT_TEMPS must be
|
|
279 |
* included in the variables of any routine using RIGHT_SHIFT.
|
|
280 |
*/
|
|
281 |
|
|
282 |
#ifdef RIGHT_SHIFT_IS_UNSIGNED
|
|
283 |
#define SHIFT_TEMPS INT32 shift_temp;
|
|
284 |
#define RIGHT_SHIFT(x,shft) \
|
|
285 |
((shift_temp = (x)) < 0 ? \
|
|
286 |
(shift_temp >> (shft)) | ((~((INT32) 0)) << (32-(shft))) : \
|
|
287 |
(shift_temp >> (shft)))
|
|
288 |
#else
|
|
289 |
#define SHIFT_TEMPS
|
|
290 |
#define RIGHT_SHIFT(x,shft) ((x) >> (shft))
|
|
291 |
#endif
|
|
292 |
|
|
293 |
|
|
294 |
/* Short forms of external names for systems with brain-damaged linkers. */
|
|
295 |
|
|
296 |
#ifdef NEED_SHORT_EXTERNAL_NAMES
|
|
297 |
#define jinit_compress_master jICompress
|
|
298 |
#define jinit_c_master_control jICMaster
|
|
299 |
#define jinit_c_main_controller jICMainC
|
|
300 |
#define jinit_c_prep_controller jICPrepC
|
|
301 |
#define jinit_c_coef_controller jICCoefC
|
|
302 |
#define jinit_color_converter jICColor
|
|
303 |
#define jinit_downsampler jIDownsampler
|
|
304 |
#define jinit_forward_dct jIFDCT
|
|
305 |
#define jinit_huff_encoder jIHEncoder
|
|
306 |
#define jinit_phuff_encoder jIPHEncoder
|
|
307 |
#define jinit_marker_writer jIMWriter
|
|
308 |
#define jinit_master_decompress jIDMaster
|
|
309 |
#define jinit_d_main_controller jIDMainC
|
|
310 |
#define jinit_d_coef_controller jIDCoefC
|
|
311 |
#define jinit_d_post_controller jIDPostC
|
|
312 |
#define jinit_input_controller jIInCtlr
|
|
313 |
#define jinit_marker_reader jIMReader
|
|
314 |
#define jinit_huff_decoder jIHDecoder
|
|
315 |
#define jinit_phuff_decoder jIPHDecoder
|
|
316 |
#define jinit_inverse_dct jIIDCT
|
|
317 |
#define jinit_upsampler jIUpsampler
|
|
318 |
#define jinit_color_deconverter jIDColor
|
|
319 |
#define jinit_1pass_quantizer jI1Quant
|
|
320 |
#define jinit_2pass_quantizer jI2Quant
|
|
321 |
#define jinit_merged_upsampler jIMUpsampler
|
|
322 |
#define jinit_memory_mgr jIMemMgr
|
|
323 |
#define jdiv_round_up jDivRound
|
|
324 |
#define jround_up jRound
|
|
325 |
#define jcopy_sample_rows jCopySamples
|
|
326 |
#define jcopy_block_row jCopyBlocks
|
|
327 |
#define jzero_far jZeroFar
|
|
328 |
#define jpeg_zigzag_order jZIGTable
|
|
329 |
#define jpeg_natural_order jZAGTable
|
|
330 |
#endif /* NEED_SHORT_EXTERNAL_NAMES */
|
|
331 |
|
|
332 |
|
|
333 |
/* Compression module initialization routines */
|
|
334 |
EXTERN(void) jinit_compress_master JPP((j_compress_ptr cinfo));
|
|
335 |
EXTERN(void) jinit_c_master_control JPP((j_compress_ptr cinfo,
|
|
336 |
boolean transcode_only));
|
|
337 |
EXTERN(void) jinit_c_main_controller JPP((j_compress_ptr cinfo,
|
|
338 |
boolean need_full_buffer));
|
|
339 |
EXTERN(void) jinit_c_prep_controller JPP((j_compress_ptr cinfo,
|
|
340 |
boolean need_full_buffer));
|
|
341 |
EXTERN(void) jinit_c_coef_controller JPP((j_compress_ptr cinfo,
|
|
342 |
boolean need_full_buffer));
|
|
343 |
EXTERN(void) jinit_color_converter JPP((j_compress_ptr cinfo));
|
|
344 |
EXTERN(void) jinit_downsampler JPP((j_compress_ptr cinfo));
|
|
345 |
EXTERN(void) jinit_forward_dct JPP((j_compress_ptr cinfo));
|
|
346 |
EXTERN(void) jinit_huff_encoder JPP((j_compress_ptr cinfo));
|
|
347 |
EXTERN(void) jinit_phuff_encoder JPP((j_compress_ptr cinfo));
|
|
348 |
EXTERN(void) jinit_marker_writer JPP((j_compress_ptr cinfo));
|
|
349 |
/* Decompression module initialization routines */
|
|
350 |
EXTERN(void) jinit_master_decompress JPP((j_decompress_ptr cinfo));
|
|
351 |
EXTERN(void) jinit_d_main_controller JPP((j_decompress_ptr cinfo,
|
|
352 |
boolean need_full_buffer));
|
|
353 |
EXTERN(void) jinit_d_coef_controller JPP((j_decompress_ptr cinfo,
|
|
354 |
boolean need_full_buffer));
|
|
355 |
EXTERN(void) jinit_d_post_controller JPP((j_decompress_ptr cinfo,
|
|
356 |
boolean need_full_buffer));
|
|
357 |
EXTERN(void) jinit_input_controller JPP((j_decompress_ptr cinfo));
|
|
358 |
EXTERN(void) jinit_marker_reader JPP((j_decompress_ptr cinfo));
|
|
359 |
EXTERN(void) jinit_huff_decoder JPP((j_decompress_ptr cinfo));
|
|
360 |
EXTERN(void) jinit_phuff_decoder JPP((j_decompress_ptr cinfo));
|
|
361 |
EXTERN(void) jinit_inverse_dct JPP((j_decompress_ptr cinfo));
|
|
362 |
EXTERN(void) jinit_upsampler JPP((j_decompress_ptr cinfo));
|
|
363 |
EXTERN(void) jinit_color_deconverter JPP((j_decompress_ptr cinfo));
|
|
364 |
EXTERN(void) jinit_1pass_quantizer JPP((j_decompress_ptr cinfo));
|
|
365 |
EXTERN(void) jinit_2pass_quantizer JPP((j_decompress_ptr cinfo));
|
|
366 |
EXTERN(void) jinit_merged_upsampler JPP((j_decompress_ptr cinfo));
|
|
367 |
/* Memory manager initialization */
|
|
368 |
EXTERN(void) jinit_memory_mgr JPP((j_common_ptr cinfo));
|
|
369 |
|
|
370 |
/* Utility routines in jutils.c */
|
|
371 |
EXTERN(long) jdiv_round_up JPP((long a, long b));
|
|
372 |
EXTERN(long) jround_up JPP((long a, long b));
|
|
373 |
EXTERN(void) jcopy_sample_rows JPP((JSAMPARRAY input_array, int source_row,
|
|
374 |
JSAMPARRAY output_array, int dest_row,
|
|
375 |
int num_rows, JDIMENSION num_cols));
|
|
376 |
EXTERN(void) jcopy_block_row JPP((JBLOCKROW input_row, JBLOCKROW output_row,
|
|
377 |
JDIMENSION num_blocks));
|
|
378 |
EXTERN(void) jzero_far JPP((void FAR * target, size_t bytestozero));
|
|
379 |
/* Constant tables in jutils.c */
|
|
380 |
#if 0 /* This table is not actually needed in v6a */
|
|
381 |
extern const int jpeg_zigzag_order[]; /* natural coef order to zigzag order */
|
|
382 |
#endif
|
|
383 |
extern const int jpeg_natural_order[]; /* zigzag coef order to natural order */
|
|
384 |
|
|
385 |
/* Suppress undefined-structure complaints if necessary. */
|
|
386 |
|
|
387 |
#ifdef INCOMPLETE_TYPES_BROKEN
|
|
388 |
#ifndef AM_MEMORY_MANAGER /* only jmemmgr.c defines these */
|
|
389 |
struct jvirt_sarray_control { long dummy; };
|
|
390 |
struct jvirt_barray_control { long dummy; };
|
|
391 |
#endif
|
|
392 |
#endif /* INCOMPLETE_TYPES_BROKEN */
|