| File: | jdk/src/java.desktop/share/native/libjavajpeg/jcmaster.c |
| Warning: | line 219, column 38 The left operand of '<' is a garbage value |
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| 1 | /* | ||||||||
| 2 | * reserved comment block | ||||||||
| 3 | * DO NOT REMOVE OR ALTER! | ||||||||
| 4 | */ | ||||||||
| 5 | /* | ||||||||
| 6 | * jcmaster.c | ||||||||
| 7 | * | ||||||||
| 8 | * Copyright (C) 1991-1997, Thomas G. Lane. | ||||||||
| 9 | * This file is part of the Independent JPEG Group's software. | ||||||||
| 10 | * For conditions of distribution and use, see the accompanying README file. | ||||||||
| 11 | * | ||||||||
| 12 | * This file contains master control logic for the JPEG compressor. | ||||||||
| 13 | * These routines are concerned with parameter validation, initial setup, | ||||||||
| 14 | * and inter-pass control (determining the number of passes and the work | ||||||||
| 15 | * to be done in each pass). | ||||||||
| 16 | */ | ||||||||
| 17 | |||||||||
| 18 | #define JPEG_INTERNALS | ||||||||
| 19 | #include "jinclude.h" | ||||||||
| 20 | #include "jpeglib.h" | ||||||||
| 21 | |||||||||
| 22 | |||||||||
| 23 | /* Private state */ | ||||||||
| 24 | |||||||||
| 25 | typedef enum { | ||||||||
| 26 | main_pass, /* input data, also do first output step */ | ||||||||
| 27 | huff_opt_pass, /* Huffman code optimization pass */ | ||||||||
| 28 | output_pass /* data output pass */ | ||||||||
| 29 | } c_pass_type; | ||||||||
| 30 | |||||||||
| 31 | typedef struct { | ||||||||
| 32 | struct jpeg_comp_master pub; /* public fields */ | ||||||||
| 33 | |||||||||
| 34 | c_pass_type pass_type; /* the type of the current pass */ | ||||||||
| 35 | |||||||||
| 36 | int pass_number; /* # of passes completed */ | ||||||||
| 37 | int total_passes; /* total # of passes needed */ | ||||||||
| 38 | |||||||||
| 39 | int scan_number; /* current index in scan_info[] */ | ||||||||
| 40 | } my_comp_master; | ||||||||
| 41 | |||||||||
| 42 | typedef my_comp_master * my_master_ptr; | ||||||||
| 43 | |||||||||
| 44 | |||||||||
| 45 | /* | ||||||||
| 46 | * Support routines that do various essential calculations. | ||||||||
| 47 | */ | ||||||||
| 48 | |||||||||
| 49 | LOCAL(void)static void | ||||||||
| 50 | initial_setup (j_compress_ptr cinfo) | ||||||||
| 51 | /* Do computations that are needed before master selection phase */ | ||||||||
| 52 | { | ||||||||
| 53 | int ci; | ||||||||
| 54 | jpeg_component_info *compptr; | ||||||||
| 55 | long samplesperrow; | ||||||||
| 56 | JDIMENSION jd_samplesperrow; | ||||||||
| 57 | |||||||||
| 58 | /* Sanity check on image dimensions */ | ||||||||
| 59 | if (cinfo->image_height <= 0 || cinfo->image_width <= 0 | ||||||||
| 60 | || cinfo->num_components <= 0 || cinfo->input_components <= 0) | ||||||||
| 61 | ERREXIT(cinfo, JERR_EMPTY_IMAGE)((cinfo)->err->msg_code = (JERR_EMPTY_IMAGE), (*(cinfo) ->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 62 | |||||||||
| 63 | /* Make sure image isn't bigger than I can handle */ | ||||||||
| 64 | if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION65500 || | ||||||||
| 65 | (long) cinfo->image_width > (long) JPEG_MAX_DIMENSION65500) | ||||||||
| 66 | ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION)((cinfo)->err->msg_code = (JERR_IMAGE_TOO_BIG), (cinfo) ->err->msg_parm.i[0] = ((unsigned int) 65500), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 67 | |||||||||
| 68 | /* Width of an input scanline must be representable as JDIMENSION. */ | ||||||||
| 69 | samplesperrow = (long) cinfo->image_width * (long) cinfo->input_components; | ||||||||
| 70 | jd_samplesperrow = (JDIMENSION) samplesperrow; | ||||||||
| 71 | if ((long) jd_samplesperrow
| ||||||||
| 72 | ERREXIT(cinfo, JERR_WIDTH_OVERFLOW)((cinfo)->err->msg_code = (JERR_WIDTH_OVERFLOW), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 73 | |||||||||
| 74 | /* For now, precision must match compiled-in value... */ | ||||||||
| 75 | if (cinfo->data_precision != BITS_IN_JSAMPLE8) | ||||||||
| 76 | ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision)((cinfo)->err->msg_code = (JERR_BAD_PRECISION), (cinfo) ->err->msg_parm.i[0] = (cinfo->data_precision), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 77 | |||||||||
| 78 | /* Check that number of components won't exceed internal array sizes */ | ||||||||
| 79 | if (cinfo->num_components > MAX_COMPONENTS10) | ||||||||
| 80 | ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,((cinfo)->err->msg_code = (JERR_COMPONENT_COUNT), (cinfo )->err->msg_parm.i[0] = (cinfo->num_components), (cinfo )->err->msg_parm.i[1] = (10), (*(cinfo)->err->error_exit ) ((j_common_ptr) (cinfo))) | ||||||||
| 81 | MAX_COMPONENTS)((cinfo)->err->msg_code = (JERR_COMPONENT_COUNT), (cinfo )->err->msg_parm.i[0] = (cinfo->num_components), (cinfo )->err->msg_parm.i[1] = (10), (*(cinfo)->err->error_exit ) ((j_common_ptr) (cinfo))); | ||||||||
| 82 | |||||||||
| 83 | /* Compute maximum sampling factors; check factor validity */ | ||||||||
| 84 | cinfo->max_h_samp_factor = 1; | ||||||||
| 85 | cinfo->max_v_samp_factor = 1; | ||||||||
| 86 | for (ci = 0, compptr = cinfo->comp_info; ci
| ||||||||
| 87 | ci++, compptr++) { | ||||||||
| 88 | if (compptr->h_samp_factor<=0 || compptr->h_samp_factor>MAX_SAMP_FACTOR4 || | ||||||||
| 89 | compptr->v_samp_factor<=0 || compptr->v_samp_factor>MAX_SAMP_FACTOR4) | ||||||||
| 90 | ERREXIT(cinfo, JERR_BAD_SAMPLING)((cinfo)->err->msg_code = (JERR_BAD_SAMPLING), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 91 | cinfo->max_h_samp_factor = MAX(cinfo->max_h_samp_factor,((cinfo->max_h_samp_factor) > (compptr->h_samp_factor ) ? (cinfo->max_h_samp_factor) : (compptr->h_samp_factor )) | ||||||||
| 92 | compptr->h_samp_factor)((cinfo->max_h_samp_factor) > (compptr->h_samp_factor ) ? (cinfo->max_h_samp_factor) : (compptr->h_samp_factor )); | ||||||||
| 93 | cinfo->max_v_samp_factor = MAX(cinfo->max_v_samp_factor,((cinfo->max_v_samp_factor) > (compptr->v_samp_factor ) ? (cinfo->max_v_samp_factor) : (compptr->v_samp_factor )) | ||||||||
| 94 | compptr->v_samp_factor)((cinfo->max_v_samp_factor) > (compptr->v_samp_factor ) ? (cinfo->max_v_samp_factor) : (compptr->v_samp_factor )); | ||||||||
| 95 | } | ||||||||
| 96 | |||||||||
| 97 | /* Compute dimensions of components */ | ||||||||
| 98 | for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; | ||||||||
| 99 | ci++, compptr++) { | ||||||||
| 100 | /* Fill in the correct component_index value; don't rely on application */ | ||||||||
| 101 | compptr->component_index = ci; | ||||||||
| 102 | /* For compression, we never do DCT scaling. */ | ||||||||
| 103 | compptr->DCT_scaled_size = DCTSIZE8; | ||||||||
| 104 | /* Size in DCT blocks */ | ||||||||
| 105 | compptr->width_in_blocks = (JDIMENSION) | ||||||||
| 106 | jdiv_round_upjDivRound((long) cinfo->image_width * (long) compptr->h_samp_factor, | ||||||||
| 107 | (long) (cinfo->max_h_samp_factor * DCTSIZE8)); | ||||||||
| 108 | compptr->height_in_blocks = (JDIMENSION) | ||||||||
| 109 | jdiv_round_upjDivRound((long) cinfo->image_height * (long) compptr->v_samp_factor, | ||||||||
| 110 | (long) (cinfo->max_v_samp_factor * DCTSIZE8)); | ||||||||
| 111 | /* Size in samples */ | ||||||||
| 112 | compptr->downsampled_width = (JDIMENSION) | ||||||||
| 113 | jdiv_round_upjDivRound((long) cinfo->image_width * (long) compptr->h_samp_factor, | ||||||||
| 114 | (long) cinfo->max_h_samp_factor); | ||||||||
| 115 | compptr->downsampled_height = (JDIMENSION) | ||||||||
| 116 | jdiv_round_upjDivRound((long) cinfo->image_height * (long) compptr->v_samp_factor, | ||||||||
| 117 | (long) cinfo->max_v_samp_factor); | ||||||||
| 118 | /* Mark component needed (this flag isn't actually used for compression) */ | ||||||||
| 119 | compptr->component_needed = TRUE1; | ||||||||
| 120 | } | ||||||||
| 121 | |||||||||
| 122 | /* Compute number of fully interleaved MCU rows (number of times that | ||||||||
| 123 | * main controller will call coefficient controller). | ||||||||
| 124 | */ | ||||||||
| 125 | cinfo->total_iMCU_rows = (JDIMENSION) | ||||||||
| 126 | jdiv_round_upjDivRound((long) cinfo->image_height, | ||||||||
| 127 | (long) (cinfo->max_v_samp_factor*DCTSIZE8)); | ||||||||
| 128 | } | ||||||||
| 129 | |||||||||
| 130 | |||||||||
| 131 | #ifdef C_MULTISCAN_FILES_SUPPORTED | ||||||||
| 132 | |||||||||
| 133 | LOCAL(void)static void | ||||||||
| 134 | validate_script (j_compress_ptr cinfo) | ||||||||
| 135 | /* Verify that the scan script in cinfo->scan_info[] is valid; also | ||||||||
| 136 | * determine whether it uses progressive JPEG, and set cinfo->progressive_mode. | ||||||||
| 137 | */ | ||||||||
| 138 | { | ||||||||
| 139 | const jpeg_scan_info * scanptr; | ||||||||
| 140 | int scanno, ncomps, ci, coefi, thisi; | ||||||||
| 141 | int Ss, Se, Ah, Al; | ||||||||
| 142 | boolean component_sent[MAX_COMPONENTS10]; | ||||||||
| 143 | #ifdef C_PROGRESSIVE_SUPPORTED | ||||||||
| 144 | int * last_bitpos_ptr; | ||||||||
| 145 | int last_bitpos[MAX_COMPONENTS10][DCTSIZE264]; | ||||||||
| 146 | /* -1 until that coefficient has been seen; then last Al for it */ | ||||||||
| 147 | #endif | ||||||||
| 148 | |||||||||
| 149 | if (cinfo->num_scans <= 0) | ||||||||
| 150 | ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, 0)((cinfo)->err->msg_code = (JERR_BAD_SCAN_SCRIPT), (cinfo )->err->msg_parm.i[0] = (0), (*(cinfo)->err->error_exit ) ((j_common_ptr) (cinfo))); | ||||||||
| 151 | |||||||||
| 152 | /* For sequential JPEG, all scans must have Ss=0, Se=DCTSIZE2-1; | ||||||||
| 153 | * for progressive JPEG, no scan can have this. | ||||||||
| 154 | */ | ||||||||
| 155 | scanptr = cinfo->scan_info; | ||||||||
| 156 | if (scanptr->Ss != 0 || scanptr->Se != DCTSIZE264-1) { | ||||||||
| 157 | #ifdef C_PROGRESSIVE_SUPPORTED | ||||||||
| 158 | cinfo->progressive_mode = TRUE1; | ||||||||
| 159 | last_bitpos_ptr = & last_bitpos[0][0]; | ||||||||
| 160 | for (ci = 0; ci < cinfo->num_components; ci++) | ||||||||
| 161 | for (coefi = 0; coefi < DCTSIZE264; coefi++) | ||||||||
| 162 | *last_bitpos_ptr++ = -1; | ||||||||
| 163 | #else | ||||||||
| 164 | ERREXIT(cinfo, JERR_NOT_COMPILED)((cinfo)->err->msg_code = (JERR_NOT_COMPILED), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 165 | #endif | ||||||||
| 166 | } else { | ||||||||
| 167 | cinfo->progressive_mode = FALSE0; | ||||||||
| 168 | for (ci = 0; ci < cinfo->num_components; ci++) | ||||||||
| 169 | component_sent[ci] = FALSE0; | ||||||||
| 170 | } | ||||||||
| 171 | |||||||||
| 172 | for (scanno = 1; scanno
| ||||||||
| 173 | /* Validate component indexes */ | ||||||||
| 174 | ncomps = scanptr->comps_in_scan; | ||||||||
| 175 | if (ncomps <= 0 || ncomps > MAX_COMPS_IN_SCAN4) | ||||||||
| 176 | ERREXIT2(cinfo, JERR_COMPONENT_COUNT, ncomps, MAX_COMPS_IN_SCAN)((cinfo)->err->msg_code = (JERR_COMPONENT_COUNT), (cinfo )->err->msg_parm.i[0] = (ncomps), (cinfo)->err->msg_parm .i[1] = (4), (*(cinfo)->err->error_exit) ((j_common_ptr ) (cinfo))); | ||||||||
| 177 | for (ci = 0; ci
| ||||||||
| 178 | thisi = scanptr->component_index[ci]; | ||||||||
| 179 | if (thisi < 0 || thisi >= cinfo->num_components) | ||||||||
| 180 | ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_SCAN_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 181 | /* Components must appear in SOF order within each scan */ | ||||||||
| 182 | if (ci
| ||||||||
| 183 | ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_SCAN_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 184 | } | ||||||||
| 185 | /* Validate progression parameters */ | ||||||||
| 186 | Ss = scanptr->Ss; | ||||||||
| 187 | Se = scanptr->Se; | ||||||||
| 188 | Ah = scanptr->Ah; | ||||||||
| 189 | Al = scanptr->Al; | ||||||||
| 190 | if (cinfo->progressive_mode) { | ||||||||
| 191 | #ifdef C_PROGRESSIVE_SUPPORTED | ||||||||
| 192 | /* The JPEG spec simply gives the ranges 0..13 for Ah and Al, but that | ||||||||
| 193 | * seems wrong: the upper bound ought to depend on data precision. | ||||||||
| 194 | * Perhaps they really meant 0..N+1 for N-bit precision. | ||||||||
| 195 | * Here we allow 0..10 for 8-bit data; Al larger than 10 results in | ||||||||
| 196 | * out-of-range reconstructed DC values during the first DC scan, | ||||||||
| 197 | * which might cause problems for some decoders. | ||||||||
| 198 | */ | ||||||||
| 199 | #if BITS_IN_JSAMPLE8 == 8 | ||||||||
| 200 | #define MAX_AH_AL10 10 | ||||||||
| 201 | #else | ||||||||
| 202 | #define MAX_AH_AL10 13 | ||||||||
| 203 | #endif | ||||||||
| 204 | if (Ss
| ||||||||
| 205 | Ah < 0 || Ah > MAX_AH_AL10 || Al < 0 || Al > MAX_AH_AL10) | ||||||||
| 206 | ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_PROG_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 207 | if (Ss
| ||||||||
| 208 | if (Se
| ||||||||
| 209 | ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_PROG_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 210 | } else { | ||||||||
| 211 | if (ncomps != 1) /* AC scans must be for only one component */ | ||||||||
| 212 | ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_PROG_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 213 | } | ||||||||
| 214 | for (ci = 0; ci < ncomps; ci++) { | ||||||||
| 215 | last_bitpos_ptr = & last_bitpos[scanptr->component_index[ci]][0]; | ||||||||
| 216 | if (Ss
| ||||||||
| 217 | ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_PROG_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 218 | for (coefi = Ss; coefi <= Se; coefi++) { | ||||||||
| 219 | if (last_bitpos_ptr[coefi] < 0) { | ||||||||
| |||||||||
| 220 | /* first scan of this coefficient */ | ||||||||
| 221 | if (Ah != 0) | ||||||||
| 222 | ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_PROG_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 223 | } else { | ||||||||
| 224 | /* not first scan */ | ||||||||
| 225 | if (Ah != last_bitpos_ptr[coefi] || Al != Ah-1) | ||||||||
| 226 | ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_PROG_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 227 | } | ||||||||
| 228 | last_bitpos_ptr[coefi] = Al; | ||||||||
| 229 | } | ||||||||
| 230 | } | ||||||||
| 231 | #endif | ||||||||
| 232 | } else { | ||||||||
| 233 | /* For sequential JPEG, all progression parameters must be these: */ | ||||||||
| 234 | if (Ss != 0 || Se != DCTSIZE264-1 || Ah != 0 || Al != 0) | ||||||||
| 235 | ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_PROG_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 236 | /* Make sure components are not sent twice */ | ||||||||
| 237 | for (ci = 0; ci < ncomps; ci++) { | ||||||||
| 238 | thisi = scanptr->component_index[ci]; | ||||||||
| 239 | if (component_sent[thisi]) | ||||||||
| 240 | ERREXIT1(cinfo, JERR_BAD_SCAN_SCRIPT, scanno)((cinfo)->err->msg_code = (JERR_BAD_SCAN_SCRIPT), (cinfo )->err->msg_parm.i[0] = (scanno), (*(cinfo)->err-> error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 241 | component_sent[thisi] = TRUE1; | ||||||||
| 242 | } | ||||||||
| 243 | } | ||||||||
| 244 | } | ||||||||
| 245 | |||||||||
| 246 | /* Now verify that everything got sent. */ | ||||||||
| 247 | if (cinfo->progressive_mode) { | ||||||||
| 248 | #ifdef C_PROGRESSIVE_SUPPORTED | ||||||||
| 249 | /* For progressive mode, we only check that at least some DC data | ||||||||
| 250 | * got sent for each component; the spec does not require that all bits | ||||||||
| 251 | * of all coefficients be transmitted. Would it be wiser to enforce | ||||||||
| 252 | * transmission of all coefficient bits?? | ||||||||
| 253 | */ | ||||||||
| 254 | for (ci = 0; ci < cinfo->num_components; ci++) { | ||||||||
| 255 | if (last_bitpos[ci][0] < 0) | ||||||||
| 256 | ERREXIT(cinfo, JERR_MISSING_DATA)((cinfo)->err->msg_code = (JERR_MISSING_DATA), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 257 | } | ||||||||
| 258 | #endif | ||||||||
| 259 | } else { | ||||||||
| 260 | for (ci = 0; ci < cinfo->num_components; ci++) { | ||||||||
| 261 | if (! component_sent[ci]) | ||||||||
| 262 | ERREXIT(cinfo, JERR_MISSING_DATA)((cinfo)->err->msg_code = (JERR_MISSING_DATA), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 263 | } | ||||||||
| 264 | } | ||||||||
| 265 | } | ||||||||
| 266 | |||||||||
| 267 | #endif /* C_MULTISCAN_FILES_SUPPORTED */ | ||||||||
| 268 | |||||||||
| 269 | |||||||||
| 270 | LOCAL(void)static void | ||||||||
| 271 | select_scan_parameters (j_compress_ptr cinfo) | ||||||||
| 272 | /* Set up the scan parameters for the current scan */ | ||||||||
| 273 | { | ||||||||
| 274 | int ci; | ||||||||
| 275 | |||||||||
| 276 | #ifdef C_MULTISCAN_FILES_SUPPORTED | ||||||||
| 277 | if (cinfo->scan_info != NULL((void*)0)) { | ||||||||
| 278 | /* Prepare for current scan --- the script is already validated */ | ||||||||
| 279 | my_master_ptr master = (my_master_ptr) cinfo->master; | ||||||||
| 280 | const jpeg_scan_info * scanptr = cinfo->scan_info + master->scan_number; | ||||||||
| 281 | |||||||||
| 282 | cinfo->comps_in_scan = scanptr->comps_in_scan; | ||||||||
| 283 | for (ci = 0; ci < scanptr->comps_in_scan; ci++) { | ||||||||
| 284 | cinfo->cur_comp_info[ci] = | ||||||||
| 285 | &cinfo->comp_info[scanptr->component_index[ci]]; | ||||||||
| 286 | } | ||||||||
| 287 | cinfo->Ss = scanptr->Ss; | ||||||||
| 288 | cinfo->Se = scanptr->Se; | ||||||||
| 289 | cinfo->Ah = scanptr->Ah; | ||||||||
| 290 | cinfo->Al = scanptr->Al; | ||||||||
| 291 | } | ||||||||
| 292 | else | ||||||||
| 293 | #endif | ||||||||
| 294 | { | ||||||||
| 295 | /* Prepare for single sequential-JPEG scan containing all components */ | ||||||||
| 296 | if (cinfo->num_components > MAX_COMPS_IN_SCAN4) | ||||||||
| 297 | ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,((cinfo)->err->msg_code = (JERR_COMPONENT_COUNT), (cinfo )->err->msg_parm.i[0] = (cinfo->num_components), (cinfo )->err->msg_parm.i[1] = (4), (*(cinfo)->err->error_exit ) ((j_common_ptr) (cinfo))) | ||||||||
| 298 | MAX_COMPS_IN_SCAN)((cinfo)->err->msg_code = (JERR_COMPONENT_COUNT), (cinfo )->err->msg_parm.i[0] = (cinfo->num_components), (cinfo )->err->msg_parm.i[1] = (4), (*(cinfo)->err->error_exit ) ((j_common_ptr) (cinfo))); | ||||||||
| 299 | cinfo->comps_in_scan = cinfo->num_components; | ||||||||
| 300 | for (ci = 0; ci < cinfo->num_components; ci++) { | ||||||||
| 301 | cinfo->cur_comp_info[ci] = &cinfo->comp_info[ci]; | ||||||||
| 302 | } | ||||||||
| 303 | cinfo->Ss = 0; | ||||||||
| 304 | cinfo->Se = DCTSIZE264-1; | ||||||||
| 305 | cinfo->Ah = 0; | ||||||||
| 306 | cinfo->Al = 0; | ||||||||
| 307 | } | ||||||||
| 308 | } | ||||||||
| 309 | |||||||||
| 310 | |||||||||
| 311 | LOCAL(void)static void | ||||||||
| 312 | per_scan_setup (j_compress_ptr cinfo) | ||||||||
| 313 | /* Do computations that are needed before processing a JPEG scan */ | ||||||||
| 314 | /* cinfo->comps_in_scan and cinfo->cur_comp_info[] are already set */ | ||||||||
| 315 | { | ||||||||
| 316 | int ci, mcublks, tmp; | ||||||||
| 317 | jpeg_component_info *compptr; | ||||||||
| 318 | |||||||||
| 319 | if (cinfo->comps_in_scan == 1) { | ||||||||
| 320 | |||||||||
| 321 | /* Noninterleaved (single-component) scan */ | ||||||||
| 322 | compptr = cinfo->cur_comp_info[0]; | ||||||||
| 323 | |||||||||
| 324 | /* Overall image size in MCUs */ | ||||||||
| 325 | cinfo->MCUs_per_row = compptr->width_in_blocks; | ||||||||
| 326 | cinfo->MCU_rows_in_scan = compptr->height_in_blocks; | ||||||||
| 327 | |||||||||
| 328 | /* For noninterleaved scan, always one block per MCU */ | ||||||||
| 329 | compptr->MCU_width = 1; | ||||||||
| 330 | compptr->MCU_height = 1; | ||||||||
| 331 | compptr->MCU_blocks = 1; | ||||||||
| 332 | compptr->MCU_sample_width = DCTSIZE8; | ||||||||
| 333 | compptr->last_col_width = 1; | ||||||||
| 334 | /* For noninterleaved scans, it is convenient to define last_row_height | ||||||||
| 335 | * as the number of block rows present in the last iMCU row. | ||||||||
| 336 | */ | ||||||||
| 337 | tmp = (int) (compptr->height_in_blocks % compptr->v_samp_factor); | ||||||||
| 338 | if (tmp == 0) tmp = compptr->v_samp_factor; | ||||||||
| 339 | compptr->last_row_height = tmp; | ||||||||
| 340 | |||||||||
| 341 | /* Prepare array describing MCU composition */ | ||||||||
| 342 | cinfo->blocks_in_MCU = 1; | ||||||||
| 343 | cinfo->MCU_membership[0] = 0; | ||||||||
| 344 | |||||||||
| 345 | } else { | ||||||||
| 346 | |||||||||
| 347 | /* Interleaved (multi-component) scan */ | ||||||||
| 348 | if (cinfo->comps_in_scan <= 0 || cinfo->comps_in_scan > MAX_COMPS_IN_SCAN4) | ||||||||
| 349 | ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->comps_in_scan,((cinfo)->err->msg_code = (JERR_COMPONENT_COUNT), (cinfo )->err->msg_parm.i[0] = (cinfo->comps_in_scan), (cinfo )->err->msg_parm.i[1] = (4), (*(cinfo)->err->error_exit ) ((j_common_ptr) (cinfo))) | ||||||||
| 350 | MAX_COMPS_IN_SCAN)((cinfo)->err->msg_code = (JERR_COMPONENT_COUNT), (cinfo )->err->msg_parm.i[0] = (cinfo->comps_in_scan), (cinfo )->err->msg_parm.i[1] = (4), (*(cinfo)->err->error_exit ) ((j_common_ptr) (cinfo))); | ||||||||
| 351 | |||||||||
| 352 | /* Overall image size in MCUs */ | ||||||||
| 353 | cinfo->MCUs_per_row = (JDIMENSION) | ||||||||
| 354 | jdiv_round_upjDivRound((long) cinfo->image_width, | ||||||||
| 355 | (long) (cinfo->max_h_samp_factor*DCTSIZE8)); | ||||||||
| 356 | cinfo->MCU_rows_in_scan = (JDIMENSION) | ||||||||
| 357 | jdiv_round_upjDivRound((long) cinfo->image_height, | ||||||||
| 358 | (long) (cinfo->max_v_samp_factor*DCTSIZE8)); | ||||||||
| 359 | |||||||||
| 360 | cinfo->blocks_in_MCU = 0; | ||||||||
| 361 | |||||||||
| 362 | for (ci = 0; ci < cinfo->comps_in_scan; ci++) { | ||||||||
| 363 | compptr = cinfo->cur_comp_info[ci]; | ||||||||
| 364 | /* Sampling factors give # of blocks of component in each MCU */ | ||||||||
| 365 | compptr->MCU_width = compptr->h_samp_factor; | ||||||||
| 366 | compptr->MCU_height = compptr->v_samp_factor; | ||||||||
| 367 | compptr->MCU_blocks = compptr->MCU_width * compptr->MCU_height; | ||||||||
| 368 | compptr->MCU_sample_width = compptr->MCU_width * DCTSIZE8; | ||||||||
| 369 | /* Figure number of non-dummy blocks in last MCU column & row */ | ||||||||
| 370 | tmp = (int) (compptr->width_in_blocks % compptr->MCU_width); | ||||||||
| 371 | if (tmp == 0) tmp = compptr->MCU_width; | ||||||||
| 372 | compptr->last_col_width = tmp; | ||||||||
| 373 | tmp = (int) (compptr->height_in_blocks % compptr->MCU_height); | ||||||||
| 374 | if (tmp == 0) tmp = compptr->MCU_height; | ||||||||
| 375 | compptr->last_row_height = tmp; | ||||||||
| 376 | /* Prepare array describing MCU composition */ | ||||||||
| 377 | mcublks = compptr->MCU_blocks; | ||||||||
| 378 | if (cinfo->blocks_in_MCU + mcublks > C_MAX_BLOCKS_IN_MCU10) | ||||||||
| 379 | ERREXIT(cinfo, JERR_BAD_MCU_SIZE)((cinfo)->err->msg_code = (JERR_BAD_MCU_SIZE), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 380 | while (mcublks-- > 0) { | ||||||||
| 381 | cinfo->MCU_membership[cinfo->blocks_in_MCU++] = ci; | ||||||||
| 382 | } | ||||||||
| 383 | } | ||||||||
| 384 | |||||||||
| 385 | } | ||||||||
| 386 | |||||||||
| 387 | /* Convert restart specified in rows to actual MCU count. */ | ||||||||
| 388 | /* Note that count must fit in 16 bits, so we provide limiting. */ | ||||||||
| 389 | if (cinfo->restart_in_rows > 0) { | ||||||||
| 390 | long nominal = (long) cinfo->restart_in_rows * (long) cinfo->MCUs_per_row; | ||||||||
| 391 | cinfo->restart_interval = (unsigned int) MIN(nominal, 65535L)((nominal) < (65535L) ? (nominal) : (65535L)); | ||||||||
| 392 | } | ||||||||
| 393 | } | ||||||||
| 394 | |||||||||
| 395 | |||||||||
| 396 | /* | ||||||||
| 397 | * Per-pass setup. | ||||||||
| 398 | * This is called at the beginning of each pass. We determine which modules | ||||||||
| 399 | * will be active during this pass and give them appropriate start_pass calls. | ||||||||
| 400 | * We also set is_last_pass to indicate whether any more passes will be | ||||||||
| 401 | * required. | ||||||||
| 402 | */ | ||||||||
| 403 | |||||||||
| 404 | METHODDEF(void)static void | ||||||||
| 405 | prepare_for_pass (j_compress_ptr cinfo) | ||||||||
| 406 | { | ||||||||
| 407 | my_master_ptr master = (my_master_ptr) cinfo->master; | ||||||||
| 408 | |||||||||
| 409 | switch (master->pass_type) { | ||||||||
| 410 | case main_pass: | ||||||||
| 411 | /* Initial pass: will collect input data, and do either Huffman | ||||||||
| 412 | * optimization or data output for the first scan. | ||||||||
| 413 | */ | ||||||||
| 414 | select_scan_parameters(cinfo); | ||||||||
| 415 | per_scan_setup(cinfo); | ||||||||
| 416 | if (! cinfo->raw_data_in) { | ||||||||
| 417 | (*cinfo->cconvert->start_pass) (cinfo); | ||||||||
| 418 | (*cinfo->downsample->start_pass) (cinfo); | ||||||||
| 419 | (*cinfo->prep->start_pass) (cinfo, JBUF_PASS_THRU); | ||||||||
| 420 | } | ||||||||
| 421 | (*cinfo->fdct->start_pass) (cinfo); | ||||||||
| 422 | (*cinfo->entropy->start_pass) (cinfo, cinfo->optimize_coding); | ||||||||
| 423 | (*cinfo->coef->start_pass) (cinfo, | ||||||||
| 424 | (master->total_passes > 1 ? | ||||||||
| 425 | JBUF_SAVE_AND_PASS : JBUF_PASS_THRU)); | ||||||||
| 426 | (*cinfo->main->start_pass) (cinfo, JBUF_PASS_THRU); | ||||||||
| 427 | if (cinfo->optimize_coding) { | ||||||||
| 428 | /* No immediate data output; postpone writing frame/scan headers */ | ||||||||
| 429 | master->pub.call_pass_startup = FALSE0; | ||||||||
| 430 | } else { | ||||||||
| 431 | /* Will write frame/scan headers at first jpeg_write_scanlines call */ | ||||||||
| 432 | master->pub.call_pass_startup = TRUE1; | ||||||||
| 433 | } | ||||||||
| 434 | break; | ||||||||
| 435 | #ifdef ENTROPY_OPT_SUPPORTED | ||||||||
| 436 | case huff_opt_pass: | ||||||||
| 437 | /* Do Huffman optimization for a scan after the first one. */ | ||||||||
| 438 | select_scan_parameters(cinfo); | ||||||||
| 439 | per_scan_setup(cinfo); | ||||||||
| 440 | if (cinfo->Ss != 0 || cinfo->Ah == 0 || cinfo->arith_code) { | ||||||||
| 441 | (*cinfo->entropy->start_pass) (cinfo, TRUE1); | ||||||||
| 442 | (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST); | ||||||||
| 443 | master->pub.call_pass_startup = FALSE0; | ||||||||
| 444 | break; | ||||||||
| 445 | } | ||||||||
| 446 | /* Special case: Huffman DC refinement scans need no Huffman table | ||||||||
| 447 | * and therefore we can skip the optimization pass for them. | ||||||||
| 448 | */ | ||||||||
| 449 | master->pass_type = output_pass; | ||||||||
| 450 | master->pass_number++; | ||||||||
| 451 | /*FALLTHROUGH*/ | ||||||||
| 452 | #endif | ||||||||
| 453 | case output_pass: | ||||||||
| 454 | /* Do a data-output pass. */ | ||||||||
| 455 | /* We need not repeat per-scan setup if prior optimization pass did it. */ | ||||||||
| 456 | if (! cinfo->optimize_coding) { | ||||||||
| 457 | select_scan_parameters(cinfo); | ||||||||
| 458 | per_scan_setup(cinfo); | ||||||||
| 459 | } | ||||||||
| 460 | (*cinfo->entropy->start_pass) (cinfo, FALSE0); | ||||||||
| 461 | (*cinfo->coef->start_pass) (cinfo, JBUF_CRANK_DEST); | ||||||||
| 462 | /* We emit frame/scan headers now */ | ||||||||
| 463 | if (master->scan_number == 0) | ||||||||
| 464 | (*cinfo->marker->write_frame_header) (cinfo); | ||||||||
| 465 | (*cinfo->marker->write_scan_header) (cinfo); | ||||||||
| 466 | master->pub.call_pass_startup = FALSE0; | ||||||||
| 467 | break; | ||||||||
| 468 | default: | ||||||||
| 469 | ERREXIT(cinfo, JERR_NOT_COMPILED)((cinfo)->err->msg_code = (JERR_NOT_COMPILED), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 470 | } | ||||||||
| 471 | |||||||||
| 472 | master->pub.is_last_pass = (master->pass_number == master->total_passes-1); | ||||||||
| 473 | |||||||||
| 474 | /* Set up progress monitor's pass info if present */ | ||||||||
| 475 | if (cinfo->progress != NULL((void*)0)) { | ||||||||
| 476 | cinfo->progress->completed_passes = master->pass_number; | ||||||||
| 477 | cinfo->progress->total_passes = master->total_passes; | ||||||||
| 478 | } | ||||||||
| 479 | } | ||||||||
| 480 | |||||||||
| 481 | |||||||||
| 482 | /* | ||||||||
| 483 | * Special start-of-pass hook. | ||||||||
| 484 | * This is called by jpeg_write_scanlines if call_pass_startup is TRUE. | ||||||||
| 485 | * In single-pass processing, we need this hook because we don't want to | ||||||||
| 486 | * write frame/scan headers during jpeg_start_compress; we want to let the | ||||||||
| 487 | * application write COM markers etc. between jpeg_start_compress and the | ||||||||
| 488 | * jpeg_write_scanlines loop. | ||||||||
| 489 | * In multi-pass processing, this routine is not used. | ||||||||
| 490 | */ | ||||||||
| 491 | |||||||||
| 492 | METHODDEF(void)static void | ||||||||
| 493 | pass_startup (j_compress_ptr cinfo) | ||||||||
| 494 | { | ||||||||
| 495 | cinfo->master->call_pass_startup = FALSE0; /* reset flag so call only once */ | ||||||||
| 496 | |||||||||
| 497 | (*cinfo->marker->write_frame_header) (cinfo); | ||||||||
| 498 | (*cinfo->marker->write_scan_header) (cinfo); | ||||||||
| 499 | } | ||||||||
| 500 | |||||||||
| 501 | |||||||||
| 502 | /* | ||||||||
| 503 | * Finish up at end of pass. | ||||||||
| 504 | */ | ||||||||
| 505 | |||||||||
| 506 | METHODDEF(void)static void | ||||||||
| 507 | finish_pass_master (j_compress_ptr cinfo) | ||||||||
| 508 | { | ||||||||
| 509 | my_master_ptr master = (my_master_ptr) cinfo->master; | ||||||||
| 510 | |||||||||
| 511 | /* The entropy coder always needs an end-of-pass call, | ||||||||
| 512 | * either to analyze statistics or to flush its output buffer. | ||||||||
| 513 | */ | ||||||||
| 514 | (*cinfo->entropy->finish_pass) (cinfo); | ||||||||
| 515 | |||||||||
| 516 | /* Update state for next pass */ | ||||||||
| 517 | switch (master->pass_type) { | ||||||||
| 518 | case main_pass: | ||||||||
| 519 | /* next pass is either output of scan 0 (after optimization) | ||||||||
| 520 | * or output of scan 1 (if no optimization). | ||||||||
| 521 | */ | ||||||||
| 522 | master->pass_type = output_pass; | ||||||||
| 523 | if (! cinfo->optimize_coding) | ||||||||
| 524 | master->scan_number++; | ||||||||
| 525 | break; | ||||||||
| 526 | case huff_opt_pass: | ||||||||
| 527 | /* next pass is always output of current scan */ | ||||||||
| 528 | master->pass_type = output_pass; | ||||||||
| 529 | break; | ||||||||
| 530 | case output_pass: | ||||||||
| 531 | /* next pass is either optimization or output of next scan */ | ||||||||
| 532 | if (cinfo->optimize_coding) | ||||||||
| 533 | master->pass_type = huff_opt_pass; | ||||||||
| 534 | master->scan_number++; | ||||||||
| 535 | break; | ||||||||
| 536 | } | ||||||||
| 537 | |||||||||
| 538 | master->pass_number++; | ||||||||
| 539 | } | ||||||||
| 540 | |||||||||
| 541 | |||||||||
| 542 | /* | ||||||||
| 543 | * Initialize master compression control. | ||||||||
| 544 | */ | ||||||||
| 545 | |||||||||
| 546 | GLOBAL(void)void | ||||||||
| 547 | jinit_c_master_controljICMaster (j_compress_ptr cinfo, boolean transcode_only) | ||||||||
| 548 | { | ||||||||
| 549 | my_master_ptr master; | ||||||||
| 550 | |||||||||
| 551 | master = (my_master_ptr) | ||||||||
| 552 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE1, | ||||||||
| 553 | SIZEOF(my_comp_master)((size_t) sizeof(my_comp_master))); | ||||||||
| 554 | cinfo->master = (struct jpeg_comp_master *) master; | ||||||||
| 555 | master->pub.prepare_for_pass = prepare_for_pass; | ||||||||
| 556 | master->pub.pass_startup = pass_startup; | ||||||||
| 557 | master->pub.finish_pass = finish_pass_master; | ||||||||
| 558 | master->pub.is_last_pass = FALSE0; | ||||||||
| 559 | |||||||||
| 560 | /* Validate parameters, determine derived values */ | ||||||||
| 561 | initial_setup(cinfo); | ||||||||
| |||||||||
| 562 | |||||||||
| 563 | if (cinfo->scan_info != NULL((void*)0)) { | ||||||||
| 564 | #ifdef C_MULTISCAN_FILES_SUPPORTED | ||||||||
| 565 | validate_script(cinfo); | ||||||||
| 566 | #else | ||||||||
| 567 | ERREXIT(cinfo, JERR_NOT_COMPILED)((cinfo)->err->msg_code = (JERR_NOT_COMPILED), (*(cinfo )->err->error_exit) ((j_common_ptr) (cinfo))); | ||||||||
| 568 | #endif | ||||||||
| 569 | } else { | ||||||||
| 570 | cinfo->progressive_mode = FALSE0; | ||||||||
| 571 | cinfo->num_scans = 1; | ||||||||
| 572 | } | ||||||||
| 573 | |||||||||
| 574 | if (cinfo->progressive_mode) /* TEMPORARY HACK ??? */ | ||||||||
| 575 | cinfo->optimize_coding = TRUE1; /* assume default tables no good for progressive mode */ | ||||||||
| 576 | |||||||||
| 577 | /* Initialize my private state */ | ||||||||
| 578 | if (transcode_only) { | ||||||||
| 579 | /* no main pass in transcoding */ | ||||||||
| 580 | if (cinfo->optimize_coding) | ||||||||
| 581 | master->pass_type = huff_opt_pass; | ||||||||
| 582 | else | ||||||||
| 583 | master->pass_type = output_pass; | ||||||||
| 584 | } else { | ||||||||
| 585 | /* for normal compression, first pass is always this type: */ | ||||||||
| 586 | master->pass_type = main_pass; | ||||||||
| 587 | } | ||||||||
| 588 | master->scan_number = 0; | ||||||||
| 589 | master->pass_number = 0; | ||||||||
| 590 | if (cinfo->optimize_coding) | ||||||||
| 591 | master->total_passes = cinfo->num_scans * 2; | ||||||||
| 592 | else | ||||||||
| 593 | master->total_passes = cinfo->num_scans; | ||||||||
| 594 | } |