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author | David Walter Seikel | 2014-01-13 19:47:58 +1000 |
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committer | David Walter Seikel | 2014-01-13 19:47:58 +1000 |
commit | f9158592e1478b2013afc7041d9ed041cf2d2f4a (patch) | |
tree | b16e389d7988700e21b4c9741044cefa536dcbae /libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jctrans.c | |
parent | Libraries readme updated with change markers and more of the Irrlicht changes. (diff) | |
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Update Irrlicht to 1.8.1. Include actual change markers this time. lol
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jctrans.c')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jctrans.c | 382 |
1 files changed, 0 insertions, 382 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jctrans.c b/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jctrans.c deleted file mode 100644 index f7d7b81..0000000 --- a/libraries/irrlicht-1.8/source/Irrlicht/jpeglib/jctrans.c +++ /dev/null | |||
@@ -1,382 +0,0 @@ | |||
1 | /* | ||
2 | * jctrans.c | ||
3 | * | ||
4 | * Copyright (C) 1995-1998, Thomas G. Lane. | ||
5 | * Modified 2000-2011 by Guido Vollbeding. | ||
6 | * This file is part of the Independent JPEG Group's software. | ||
7 | * For conditions of distribution and use, see the accompanying README file. | ||
8 | * | ||
9 | * This file contains library routines for transcoding compression, | ||
10 | * that is, writing raw DCT coefficient arrays to an output JPEG file. | ||
11 | * The routines in jcapimin.c will also be needed by a transcoder. | ||
12 | */ | ||
13 | |||
14 | #define JPEG_INTERNALS | ||
15 | #include "jinclude.h" | ||
16 | #include "jpeglib.h" | ||
17 | |||
18 | |||
19 | /* Forward declarations */ | ||
20 | LOCAL(void) transencode_master_selection | ||
21 | JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays)); | ||
22 | LOCAL(void) transencode_coef_controller | ||
23 | JPP((j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays)); | ||
24 | |||
25 | |||
26 | /* | ||
27 | * Compression initialization for writing raw-coefficient data. | ||
28 | * Before calling this, all parameters and a data destination must be set up. | ||
29 | * Call jpeg_finish_compress() to actually write the data. | ||
30 | * | ||
31 | * The number of passed virtual arrays must match cinfo->num_components. | ||
32 | * Note that the virtual arrays need not be filled or even realized at | ||
33 | * the time write_coefficients is called; indeed, if the virtual arrays | ||
34 | * were requested from this compression object's memory manager, they | ||
35 | * typically will be realized during this routine and filled afterwards. | ||
36 | */ | ||
37 | |||
38 | GLOBAL(void) | ||
39 | jpeg_write_coefficients (j_compress_ptr cinfo, jvirt_barray_ptr * coef_arrays) | ||
40 | { | ||
41 | if (cinfo->global_state != CSTATE_START) | ||
42 | ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state); | ||
43 | /* Mark all tables to be written */ | ||
44 | jpeg_suppress_tables(cinfo, FALSE); | ||
45 | /* (Re)initialize error mgr and destination modules */ | ||
46 | (*cinfo->err->reset_error_mgr) ((j_common_ptr) cinfo); | ||
47 | (*cinfo->dest->init_destination) (cinfo); | ||
48 | /* Perform master selection of active modules */ | ||
49 | transencode_master_selection(cinfo, coef_arrays); | ||
50 | /* Wait for jpeg_finish_compress() call */ | ||
51 | cinfo->next_scanline = 0; /* so jpeg_write_marker works */ | ||
52 | cinfo->global_state = CSTATE_WRCOEFS; | ||
53 | } | ||
54 | |||
55 | |||
56 | /* | ||
57 | * Initialize the compression object with default parameters, | ||
58 | * then copy from the source object all parameters needed for lossless | ||
59 | * transcoding. Parameters that can be varied without loss (such as | ||
60 | * scan script and Huffman optimization) are left in their default states. | ||
61 | */ | ||
62 | |||
63 | GLOBAL(void) | ||
64 | jpeg_copy_critical_parameters (j_decompress_ptr srcinfo, | ||
65 | j_compress_ptr dstinfo) | ||
66 | { | ||
67 | JQUANT_TBL ** qtblptr; | ||
68 | jpeg_component_info *incomp, *outcomp; | ||
69 | JQUANT_TBL *c_quant, *slot_quant; | ||
70 | int tblno, ci, coefi; | ||
71 | |||
72 | /* Safety check to ensure start_compress not called yet. */ | ||
73 | if (dstinfo->global_state != CSTATE_START) | ||
74 | ERREXIT1(dstinfo, JERR_BAD_STATE, dstinfo->global_state); | ||
75 | /* Copy fundamental image dimensions */ | ||
76 | dstinfo->image_width = srcinfo->image_width; | ||
77 | dstinfo->image_height = srcinfo->image_height; | ||
78 | dstinfo->input_components = srcinfo->num_components; | ||
79 | dstinfo->in_color_space = srcinfo->jpeg_color_space; | ||
80 | dstinfo->jpeg_width = srcinfo->output_width; | ||
81 | dstinfo->jpeg_height = srcinfo->output_height; | ||
82 | dstinfo->min_DCT_h_scaled_size = srcinfo->min_DCT_h_scaled_size; | ||
83 | dstinfo->min_DCT_v_scaled_size = srcinfo->min_DCT_v_scaled_size; | ||
84 | /* Initialize all parameters to default values */ | ||
85 | jpeg_set_defaults(dstinfo); | ||
86 | /* jpeg_set_defaults may choose wrong colorspace, eg YCbCr if input is RGB. | ||
87 | * Fix it to get the right header markers for the image colorspace. | ||
88 | */ | ||
89 | jpeg_set_colorspace(dstinfo, srcinfo->jpeg_color_space); | ||
90 | dstinfo->data_precision = srcinfo->data_precision; | ||
91 | dstinfo->CCIR601_sampling = srcinfo->CCIR601_sampling; | ||
92 | /* Copy the source's quantization tables. */ | ||
93 | for (tblno = 0; tblno < NUM_QUANT_TBLS; tblno++) { | ||
94 | if (srcinfo->quant_tbl_ptrs[tblno] != NULL) { | ||
95 | qtblptr = & dstinfo->quant_tbl_ptrs[tblno]; | ||
96 | if (*qtblptr == NULL) | ||
97 | *qtblptr = jpeg_alloc_quant_table((j_common_ptr) dstinfo); | ||
98 | MEMCOPY((*qtblptr)->quantval, | ||
99 | srcinfo->quant_tbl_ptrs[tblno]->quantval, | ||
100 | SIZEOF((*qtblptr)->quantval)); | ||
101 | (*qtblptr)->sent_table = FALSE; | ||
102 | } | ||
103 | } | ||
104 | /* Copy the source's per-component info. | ||
105 | * Note we assume jpeg_set_defaults has allocated the dest comp_info array. | ||
106 | */ | ||
107 | dstinfo->num_components = srcinfo->num_components; | ||
108 | if (dstinfo->num_components < 1 || dstinfo->num_components > MAX_COMPONENTS) | ||
109 | ERREXIT2(dstinfo, JERR_COMPONENT_COUNT, dstinfo->num_components, | ||
110 | MAX_COMPONENTS); | ||
111 | for (ci = 0, incomp = srcinfo->comp_info, outcomp = dstinfo->comp_info; | ||
112 | ci < dstinfo->num_components; ci++, incomp++, outcomp++) { | ||
113 | outcomp->component_id = incomp->component_id; | ||
114 | outcomp->h_samp_factor = incomp->h_samp_factor; | ||
115 | outcomp->v_samp_factor = incomp->v_samp_factor; | ||
116 | outcomp->quant_tbl_no = incomp->quant_tbl_no; | ||
117 | /* Make sure saved quantization table for component matches the qtable | ||
118 | * slot. If not, the input file re-used this qtable slot. | ||
119 | * IJG encoder currently cannot duplicate this. | ||
120 | */ | ||
121 | tblno = outcomp->quant_tbl_no; | ||
122 | if (tblno < 0 || tblno >= NUM_QUANT_TBLS || | ||
123 | srcinfo->quant_tbl_ptrs[tblno] == NULL) | ||
124 | ERREXIT1(dstinfo, JERR_NO_QUANT_TABLE, tblno); | ||
125 | slot_quant = srcinfo->quant_tbl_ptrs[tblno]; | ||
126 | c_quant = incomp->quant_table; | ||
127 | if (c_quant != NULL) { | ||
128 | for (coefi = 0; coefi < DCTSIZE2; coefi++) { | ||
129 | if (c_quant->quantval[coefi] != slot_quant->quantval[coefi]) | ||
130 | ERREXIT1(dstinfo, JERR_MISMATCHED_QUANT_TABLE, tblno); | ||
131 | } | ||
132 | } | ||
133 | /* Note: we do not copy the source's Huffman table assignments; | ||
134 | * instead we rely on jpeg_set_colorspace to have made a suitable choice. | ||
135 | */ | ||
136 | } | ||
137 | /* Also copy JFIF version and resolution information, if available. | ||
138 | * Strictly speaking this isn't "critical" info, but it's nearly | ||
139 | * always appropriate to copy it if available. In particular, | ||
140 | * if the application chooses to copy JFIF 1.02 extension markers from | ||
141 | * the source file, we need to copy the version to make sure we don't | ||
142 | * emit a file that has 1.02 extensions but a claimed version of 1.01. | ||
143 | * We will *not*, however, copy version info from mislabeled "2.01" files. | ||
144 | */ | ||
145 | if (srcinfo->saw_JFIF_marker) { | ||
146 | if (srcinfo->JFIF_major_version == 1) { | ||
147 | dstinfo->JFIF_major_version = srcinfo->JFIF_major_version; | ||
148 | dstinfo->JFIF_minor_version = srcinfo->JFIF_minor_version; | ||
149 | } | ||
150 | dstinfo->density_unit = srcinfo->density_unit; | ||
151 | dstinfo->X_density = srcinfo->X_density; | ||
152 | dstinfo->Y_density = srcinfo->Y_density; | ||
153 | } | ||
154 | } | ||
155 | |||
156 | |||
157 | /* | ||
158 | * Master selection of compression modules for transcoding. | ||
159 | * This substitutes for jcinit.c's initialization of the full compressor. | ||
160 | */ | ||
161 | |||
162 | LOCAL(void) | ||
163 | transencode_master_selection (j_compress_ptr cinfo, | ||
164 | jvirt_barray_ptr * coef_arrays) | ||
165 | { | ||
166 | /* Initialize master control (includes parameter checking/processing) */ | ||
167 | jinit_c_master_control(cinfo, TRUE /* transcode only */); | ||
168 | |||
169 | /* Entropy encoding: either Huffman or arithmetic coding. */ | ||
170 | if (cinfo->arith_code) | ||
171 | jinit_arith_encoder(cinfo); | ||
172 | else { | ||
173 | jinit_huff_encoder(cinfo); | ||
174 | } | ||
175 | |||
176 | /* We need a special coefficient buffer controller. */ | ||
177 | transencode_coef_controller(cinfo, coef_arrays); | ||
178 | |||
179 | jinit_marker_writer(cinfo); | ||
180 | |||
181 | /* We can now tell the memory manager to allocate virtual arrays. */ | ||
182 | (*cinfo->mem->realize_virt_arrays) ((j_common_ptr) cinfo); | ||
183 | |||
184 | /* Write the datastream header (SOI, JFIF) immediately. | ||
185 | * Frame and scan headers are postponed till later. | ||
186 | * This lets application insert special markers after the SOI. | ||
187 | */ | ||
188 | (*cinfo->marker->write_file_header) (cinfo); | ||
189 | } | ||
190 | |||
191 | |||
192 | /* | ||
193 | * The rest of this file is a special implementation of the coefficient | ||
194 | * buffer controller. This is similar to jccoefct.c, but it handles only | ||
195 | * output from presupplied virtual arrays. Furthermore, we generate any | ||
196 | * dummy padding blocks on-the-fly rather than expecting them to be present | ||
197 | * in the arrays. | ||
198 | */ | ||
199 | |||
200 | /* Private buffer controller object */ | ||
201 | |||
202 | typedef struct { | ||
203 | struct jpeg_c_coef_controller pub; /* public fields */ | ||
204 | |||
205 | JDIMENSION iMCU_row_num; /* iMCU row # within image */ | ||
206 | JDIMENSION mcu_ctr; /* counts MCUs processed in current row */ | ||
207 | int MCU_vert_offset; /* counts MCU rows within iMCU row */ | ||
208 | int MCU_rows_per_iMCU_row; /* number of such rows needed */ | ||
209 | |||
210 | /* Virtual block array for each component. */ | ||
211 | jvirt_barray_ptr * whole_image; | ||
212 | |||
213 | /* Workspace for constructing dummy blocks at right/bottom edges. */ | ||
214 | JBLOCKROW dummy_buffer[C_MAX_BLOCKS_IN_MCU]; | ||
215 | } my_coef_controller; | ||
216 | |||
217 | typedef my_coef_controller * my_coef_ptr; | ||
218 | |||
219 | |||
220 | LOCAL(void) | ||
221 | start_iMCU_row (j_compress_ptr cinfo) | ||
222 | /* Reset within-iMCU-row counters for a new row */ | ||
223 | { | ||
224 | my_coef_ptr coef = (my_coef_ptr) cinfo->coef; | ||
225 | |||
226 | /* In an interleaved scan, an MCU row is the same as an iMCU row. | ||
227 | * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows. | ||
228 | * But at the bottom of the image, process only what's left. | ||
229 | */ | ||
230 | if (cinfo->comps_in_scan > 1) { | ||
231 | coef->MCU_rows_per_iMCU_row = 1; | ||
232 | } else { | ||
233 | if (coef->iMCU_row_num < (cinfo->total_iMCU_rows-1)) | ||
234 | coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->v_samp_factor; | ||
235 | else | ||
236 | coef->MCU_rows_per_iMCU_row = cinfo->cur_comp_info[0]->last_row_height; | ||
237 | } | ||
238 | |||
239 | coef->mcu_ctr = 0; | ||
240 | coef->MCU_vert_offset = 0; | ||
241 | } | ||
242 | |||
243 | |||
244 | /* | ||
245 | * Initialize for a processing pass. | ||
246 | */ | ||
247 | |||
248 | METHODDEF(void) | ||
249 | start_pass_coef (j_compress_ptr cinfo, J_BUF_MODE pass_mode) | ||
250 | { | ||
251 | my_coef_ptr coef = (my_coef_ptr) cinfo->coef; | ||
252 | |||
253 | if (pass_mode != JBUF_CRANK_DEST) | ||
254 | ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); | ||
255 | |||
256 | coef->iMCU_row_num = 0; | ||
257 | start_iMCU_row(cinfo); | ||
258 | } | ||
259 | |||
260 | |||
261 | /* | ||
262 | * Process some data. | ||
263 | * We process the equivalent of one fully interleaved MCU row ("iMCU" row) | ||
264 | * per call, ie, v_samp_factor block rows for each component in the scan. | ||
265 | * The data is obtained from the virtual arrays and fed to the entropy coder. | ||
266 | * Returns TRUE if the iMCU row is completed, FALSE if suspended. | ||
267 | * | ||
268 | * NB: input_buf is ignored; it is likely to be a NULL pointer. | ||
269 | */ | ||
270 | |||
271 | METHODDEF(boolean) | ||
272 | compress_output (j_compress_ptr cinfo, JSAMPIMAGE input_buf) | ||
273 | { | ||
274 | my_coef_ptr coef = (my_coef_ptr) cinfo->coef; | ||
275 | JDIMENSION MCU_col_num; /* index of current MCU within row */ | ||
276 | JDIMENSION last_MCU_col = cinfo->MCUs_per_row - 1; | ||
277 | JDIMENSION last_iMCU_row = cinfo->total_iMCU_rows - 1; | ||
278 | int blkn, ci, xindex, yindex, yoffset, blockcnt; | ||
279 | JDIMENSION start_col; | ||
280 | JBLOCKARRAY buffer[MAX_COMPS_IN_SCAN]; | ||
281 | JBLOCKROW MCU_buffer[C_MAX_BLOCKS_IN_MCU]; | ||
282 | JBLOCKROW buffer_ptr; | ||
283 | jpeg_component_info *compptr; | ||
284 | |||
285 | /* Align the virtual buffers for the components used in this scan. */ | ||
286 | for (ci = 0; ci < cinfo->comps_in_scan; ci++) { | ||
287 | compptr = cinfo->cur_comp_info[ci]; | ||
288 | buffer[ci] = (*cinfo->mem->access_virt_barray) | ||
289 | ((j_common_ptr) cinfo, coef->whole_image[compptr->component_index], | ||
290 | coef->iMCU_row_num * compptr->v_samp_factor, | ||
291 | (JDIMENSION) compptr->v_samp_factor, FALSE); | ||
292 | } | ||
293 | |||
294 | /* Loop to process one whole iMCU row */ | ||
295 | for (yoffset = coef->MCU_vert_offset; yoffset < coef->MCU_rows_per_iMCU_row; | ||
296 | yoffset++) { | ||
297 | for (MCU_col_num = coef->mcu_ctr; MCU_col_num < cinfo->MCUs_per_row; | ||
298 | MCU_col_num++) { | ||
299 | /* Construct list of pointers to DCT blocks belonging to this MCU */ | ||
300 | blkn = 0; /* index of current DCT block within MCU */ | ||
301 | for (ci = 0; ci < cinfo->comps_in_scan; ci++) { | ||
302 | compptr = cinfo->cur_comp_info[ci]; | ||
303 | start_col = MCU_col_num * compptr->MCU_width; | ||
304 | blockcnt = (MCU_col_num < last_MCU_col) ? compptr->MCU_width | ||
305 | : compptr->last_col_width; | ||
306 | for (yindex = 0; yindex < compptr->MCU_height; yindex++) { | ||
307 | if (coef->iMCU_row_num < last_iMCU_row || | ||
308 | yindex+yoffset < compptr->last_row_height) { | ||
309 | /* Fill in pointers to real blocks in this row */ | ||
310 | buffer_ptr = buffer[ci][yindex+yoffset] + start_col; | ||
311 | for (xindex = 0; xindex < blockcnt; xindex++) | ||
312 | MCU_buffer[blkn++] = buffer_ptr++; | ||
313 | } else { | ||
314 | /* At bottom of image, need a whole row of dummy blocks */ | ||
315 | xindex = 0; | ||
316 | } | ||
317 | /* Fill in any dummy blocks needed in this row. | ||
318 | * Dummy blocks are filled in the same way as in jccoefct.c: | ||
319 | * all zeroes in the AC entries, DC entries equal to previous | ||
320 | * block's DC value. The init routine has already zeroed the | ||
321 | * AC entries, so we need only set the DC entries correctly. | ||
322 | */ | ||
323 | for (; xindex < compptr->MCU_width; xindex++) { | ||
324 | MCU_buffer[blkn] = coef->dummy_buffer[blkn]; | ||
325 | MCU_buffer[blkn][0][0] = MCU_buffer[blkn-1][0][0]; | ||
326 | blkn++; | ||
327 | } | ||
328 | } | ||
329 | } | ||
330 | /* Try to write the MCU. */ | ||
331 | if (! (*cinfo->entropy->encode_mcu) (cinfo, MCU_buffer)) { | ||
332 | /* Suspension forced; update state counters and exit */ | ||
333 | coef->MCU_vert_offset = yoffset; | ||
334 | coef->mcu_ctr = MCU_col_num; | ||
335 | return FALSE; | ||
336 | } | ||
337 | } | ||
338 | /* Completed an MCU row, but perhaps not an iMCU row */ | ||
339 | coef->mcu_ctr = 0; | ||
340 | } | ||
341 | /* Completed the iMCU row, advance counters for next one */ | ||
342 | coef->iMCU_row_num++; | ||
343 | start_iMCU_row(cinfo); | ||
344 | return TRUE; | ||
345 | } | ||
346 | |||
347 | |||
348 | /* | ||
349 | * Initialize coefficient buffer controller. | ||
350 | * | ||
351 | * Each passed coefficient array must be the right size for that | ||
352 | * coefficient: width_in_blocks wide and height_in_blocks high, | ||
353 | * with unitheight at least v_samp_factor. | ||
354 | */ | ||
355 | |||
356 | LOCAL(void) | ||
357 | transencode_coef_controller (j_compress_ptr cinfo, | ||
358 | jvirt_barray_ptr * coef_arrays) | ||
359 | { | ||
360 | my_coef_ptr coef; | ||
361 | JBLOCKROW buffer; | ||
362 | int i; | ||
363 | |||
364 | coef = (my_coef_ptr) | ||
365 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, | ||
366 | SIZEOF(my_coef_controller)); | ||
367 | cinfo->coef = (struct jpeg_c_coef_controller *) coef; | ||
368 | coef->pub.start_pass = start_pass_coef; | ||
369 | coef->pub.compress_data = compress_output; | ||
370 | |||
371 | /* Save pointer to virtual arrays */ | ||
372 | coef->whole_image = coef_arrays; | ||
373 | |||
374 | /* Allocate and pre-zero space for dummy DCT blocks. */ | ||
375 | buffer = (JBLOCKROW) | ||
376 | (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, | ||
377 | C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK)); | ||
378 | FMEMZERO((void FAR *) buffer, C_MAX_BLOCKS_IN_MCU * SIZEOF(JBLOCK)); | ||
379 | for (i = 0; i < C_MAX_BLOCKS_IN_MCU; i++) { | ||
380 | coef->dummy_buffer[i] = buffer + i; | ||
381 | } | ||
382 | } | ||