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Revision 1.13.2.4 - (view) (download)
1 : | edgomez | 1.13 | /****************************************************************************** |
2 : | * * | ||
3 : | * This file is part of XviD, a free MPEG-4 video encoder/decoder * | ||
4 : | * * | ||
5 : | * XviD is an implementation of a part of one or more MPEG-4 Video tools * | ||
6 : | * as specified in ISO/IEC 14496-2 standard. Those intending to use this * | ||
7 : | * software module in hardware or software products are advised that its * | ||
8 : | * use may infringe existing patents or copyrights, and any such use * | ||
9 : | * would be at such party's own risk. The original developer of this * | ||
10 : | * software module and his/her company, and subsequent editors and their * | ||
11 : | * companies, will have no liability for use of this software or * | ||
12 : | * modifications or derivatives thereof. * | ||
13 : | * * | ||
14 : | * XviD is free software; you can redistribute it and/or modify it * | ||
15 : | * under the terms of the GNU General Public License as published by * | ||
16 : | * the Free Software Foundation; either version 2 of the License, or * | ||
17 : | * (at your option) any later version. * | ||
18 : | * * | ||
19 : | * XviD is distributed in the hope that it will be useful, but * | ||
20 : | * WITHOUT ANY WARRANTY; without even the implied warranty of * | ||
21 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | ||
22 : | * GNU General Public License for more details. * | ||
23 : | * * | ||
24 : | * You should have received a copy of the GNU General Public License * | ||
25 : | * along with this program; if not, write to the Free Software * | ||
26 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * | ||
27 : | * * | ||
28 : | ******************************************************************************/ | ||
29 : | |||
30 : | /****************************************************************************** | ||
31 : | * * | ||
32 : | * mbprediction.c * | ||
33 : | * * | ||
34 : | * Copyright (C) 2001 - Michael Militzer <isibaar@xvid.org> * | ||
35 : | * Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * | ||
36 : | * * | ||
37 : | * For more information visit the XviD homepage: http://www.xvid.org * | ||
38 : | * * | ||
39 : | ******************************************************************************/ | ||
40 : | |||
41 : | /****************************************************************************** | ||
42 : | * * | ||
43 : | * Revision history: * | ||
44 : | * * | ||
45 : | * 29.06.2002 predict_acdc() bounding * | ||
46 : | * 12.12.2001 improved calc_acdc_prediction; removed need for memcpy * | ||
47 : | * 15.12.2001 moved pmv displacement to motion estimation * | ||
48 : | * 30.11.2001 mmx cbp support * | ||
49 : | * 17.11.2001 initial version * | ||
50 : | * * | ||
51 : | ******************************************************************************/ | ||
52 : | Isibaar | 1.1 | |
53 : | edgomez | 1.13.2.4 | #include <stdlib.h> |
54 : | |||
55 : | edgomez | 1.13 | #include "../global.h" |
56 : | Isibaar | 1.1 | #include "../encoder.h" |
57 : | #include "mbprediction.h" | ||
58 : | #include "../utils/mbfunctions.h" | ||
59 : | #include "../bitstream/cbp.h" | ||
60 : | edgomez | 1.13 | #include "../bitstream/mbcoding.h" |
61 : | #include "../bitstream/zigzag.h" | ||
62 : | Isibaar | 1.1 | |
63 : | |||
64 : | edgomez | 1.4 | static int __inline |
65 : | rescale(int predict_quant, | ||
66 : | int current_quant, | ||
67 : | int coeff) | ||
68 : | Isibaar | 1.1 | { |
69 : | edgomez | 1.4 | return (coeff != 0) ? DIV_DIV((coeff) * (predict_quant), |
70 : | (current_quant)) : 0; | ||
71 : | Isibaar | 1.1 | } |
72 : | |||
73 : | |||
74 : | edgomez | 1.4 | static const int16_t default_acdc_values[15] = { |
75 : | Isibaar | 1.1 | 1024, |
76 : | edgomez | 1.2 | 0, 0, 0, 0, 0, 0, 0, |
77 : | 0, 0, 0, 0, 0, 0, 0 | ||
78 : | Isibaar | 1.1 | }; |
79 : | edgomez | 1.8 | |
80 : | |||
81 : | Isibaar | 1.1 | /* get dc/ac prediction direction for a single block and place |
82 : | predictor values into MB->pred_values[j][..] | ||
83 : | */ | ||
84 : | |||
85 : | |||
86 : | edgomez | 1.4 | void |
87 : | predict_acdc(MACROBLOCK * pMBs, | ||
88 : | uint32_t x, | ||
89 : | uint32_t y, | ||
90 : | uint32_t mb_width, | ||
91 : | uint32_t block, | ||
92 : | int16_t qcoeff[64], | ||
93 : | uint32_t current_quant, | ||
94 : | int32_t iDcScaler, | ||
95 : | suxen_drol | 1.5 | int16_t predictors[8], |
96 : | suxen_drol | 1.6 | const int bound) |
97 : | suxen_drol | 1.5 | |
98 : | Isibaar | 1.1 | { |
99 : | suxen_drol | 1.6 | const int mbpos = (y * mb_width) + x; |
100 : | edgomez | 1.2 | int16_t *left, *top, *diag, *current; |
101 : | Isibaar | 1.1 | |
102 : | edgomez | 1.2 | int32_t left_quant = current_quant; |
103 : | int32_t top_quant = current_quant; | ||
104 : | Isibaar | 1.1 | |
105 : | edgomez | 1.2 | const int16_t *pLeft = default_acdc_values; |
106 : | const int16_t *pTop = default_acdc_values; | ||
107 : | const int16_t *pDiag = default_acdc_values; | ||
108 : | Isibaar | 1.1 | |
109 : | edgomez | 1.13 | uint32_t index = x + y * mb_width; // current macroblock |
110 : | edgomez | 1.4 | int *acpred_direction = &pMBs[index].acpred_directions[block]; |
111 : | Isibaar | 1.1 | uint32_t i; |
112 : | |||
113 : | left = top = diag = current = 0; | ||
114 : | |||
115 : | edgomez | 1.13 | // grab left,top and diag macroblocks |
116 : | Isibaar | 1.1 | |
117 : | edgomez | 1.13 | // left macroblock |
118 : | Isibaar | 1.1 | |
119 : | suxen_drol | 1.5 | if (x && mbpos >= bound + 1 && |
120 : | edgomez | 1.4 | (pMBs[index - 1].mode == MODE_INTRA || |
121 : | pMBs[index - 1].mode == MODE_INTRA_Q)) { | ||
122 : | Isibaar | 1.1 | |
123 : | left = pMBs[index - 1].pred_values[0]; | ||
124 : | left_quant = pMBs[index - 1].quant; | ||
125 : | edgomez | 1.13 | //DEBUGI("LEFT", *(left+MBPRED_SIZE)); |
126 : | Isibaar | 1.1 | } |
127 : | edgomez | 1.13 | // top macroblock |
128 : | edgomez | 1.4 | |
129 : | suxen_drol | 1.6 | if (mbpos >= bound + (int)mb_width && |
130 : | edgomez | 1.4 | (pMBs[index - mb_width].mode == MODE_INTRA || |
131 : | pMBs[index - mb_width].mode == MODE_INTRA_Q)) { | ||
132 : | Isibaar | 1.1 | |
133 : | top = pMBs[index - mb_width].pred_values[0]; | ||
134 : | top_quant = pMBs[index - mb_width].quant; | ||
135 : | edgomez | 1.2 | } |
136 : | edgomez | 1.13 | // diag macroblock |
137 : | edgomez | 1.4 | |
138 : | suxen_drol | 1.6 | if (x && mbpos >= bound + (int)mb_width + 1 && |
139 : | edgomez | 1.4 | (pMBs[index - 1 - mb_width].mode == MODE_INTRA || |
140 : | pMBs[index - 1 - mb_width].mode == MODE_INTRA_Q)) { | ||
141 : | Isibaar | 1.1 | |
142 : | diag = pMBs[index - 1 - mb_width].pred_values[0]; | ||
143 : | } | ||
144 : | |||
145 : | edgomez | 1.2 | current = pMBs[index].pred_values[0]; |
146 : | Isibaar | 1.1 | |
147 : | edgomez | 1.13 | // now grab pLeft, pTop, pDiag _blocks_ |
148 : | edgomez | 1.4 | |
149 : | Isibaar | 1.1 | switch (block) { |
150 : | edgomez | 1.4 | |
151 : | case 0: | ||
152 : | if (left) | ||
153 : | Isibaar | 1.1 | pLeft = left + MBPRED_SIZE; |
154 : | edgomez | 1.4 | |
155 : | if (top) | ||
156 : | Isibaar | 1.1 | pTop = top + (MBPRED_SIZE << 1); |
157 : | edgomez | 1.4 | |
158 : | if (diag) | ||
159 : | Isibaar | 1.1 | pDiag = diag + 3 * MBPRED_SIZE; |
160 : | edgomez | 1.4 | |
161 : | Isibaar | 1.1 | break; |
162 : | edgomez | 1.4 | |
163 : | Isibaar | 1.1 | case 1: |
164 : | pLeft = current; | ||
165 : | left_quant = current_quant; | ||
166 : | edgomez | 1.4 | |
167 : | if (top) { | ||
168 : | Isibaar | 1.1 | pTop = top + 3 * MBPRED_SIZE; |
169 : | pDiag = top + (MBPRED_SIZE << 1); | ||
170 : | } | ||
171 : | break; | ||
172 : | edgomez | 1.4 | |
173 : | Isibaar | 1.1 | case 2: |
174 : | edgomez | 1.4 | if (left) { |
175 : | Isibaar | 1.1 | pLeft = left + 3 * MBPRED_SIZE; |
176 : | pDiag = left + MBPRED_SIZE; | ||
177 : | } | ||
178 : | edgomez | 1.4 | |
179 : | Isibaar | 1.1 | pTop = current; |
180 : | top_quant = current_quant; | ||
181 : | |||
182 : | break; | ||
183 : | edgomez | 1.4 | |
184 : | Isibaar | 1.1 | case 3: |
185 : | pLeft = current + (MBPRED_SIZE << 1); | ||
186 : | left_quant = current_quant; | ||
187 : | edgomez | 1.4 | |
188 : | Isibaar | 1.1 | pTop = current + MBPRED_SIZE; |
189 : | top_quant = current_quant; | ||
190 : | edgomez | 1.4 | |
191 : | Isibaar | 1.1 | pDiag = current; |
192 : | edgomez | 1.4 | |
193 : | Isibaar | 1.1 | break; |
194 : | edgomez | 1.4 | |
195 : | Isibaar | 1.1 | case 4: |
196 : | edgomez | 1.4 | if (left) |
197 : | Isibaar | 1.1 | pLeft = left + (MBPRED_SIZE << 2); |
198 : | edgomez | 1.4 | if (top) |
199 : | Isibaar | 1.1 | pTop = top + (MBPRED_SIZE << 2); |
200 : | edgomez | 1.4 | if (diag) |
201 : | Isibaar | 1.1 | pDiag = diag + (MBPRED_SIZE << 2); |
202 : | break; | ||
203 : | edgomez | 1.4 | |
204 : | Isibaar | 1.1 | case 5: |
205 : | edgomez | 1.4 | if (left) |
206 : | Isibaar | 1.1 | pLeft = left + 5 * MBPRED_SIZE; |
207 : | edgomez | 1.4 | if (top) |
208 : | Isibaar | 1.1 | pTop = top + 5 * MBPRED_SIZE; |
209 : | edgomez | 1.4 | if (diag) |
210 : | Isibaar | 1.1 | pDiag = diag + 5 * MBPRED_SIZE; |
211 : | break; | ||
212 : | } | ||
213 : | |||
214 : | edgomez | 1.13 | // determine ac prediction direction & ac/dc predictor |
215 : | // place rescaled ac/dc predictions into predictors[] for later use | ||
216 : | Isibaar | 1.1 | |
217 : | edgomez | 1.13.2.4 | if (abs(pLeft[0] - pDiag[0]) < abs(pDiag[0] - pTop[0])) { |
218 : | edgomez | 1.13 | *acpred_direction = 1; // vertical |
219 : | predictors[0] = DIV_DIV(pTop[0], iDcScaler); | ||
220 : | edgomez | 1.4 | for (i = 1; i < 8; i++) { |
221 : | Isibaar | 1.1 | predictors[i] = rescale(top_quant, current_quant, pTop[i]); |
222 : | } | ||
223 : | edgomez | 1.4 | } else { |
224 : | edgomez | 1.13 | *acpred_direction = 2; // horizontal |
225 : | predictors[0] = DIV_DIV(pLeft[0], iDcScaler); | ||
226 : | edgomez | 1.4 | for (i = 1; i < 8; i++) { |
227 : | Isibaar | 1.1 | predictors[i] = rescale(left_quant, current_quant, pLeft[i + 7]); |
228 : | } | ||
229 : | } | ||
230 : | } | ||
231 : | |||
232 : | |||
233 : | /* decoder: add predictors to dct_codes[] and | ||
234 : | store current coeffs to pred_values[] for future prediction | ||
235 : | */ | ||
236 : | |||
237 : | |||
238 : | edgomez | 1.4 | void |
239 : | add_acdc(MACROBLOCK * pMB, | ||
240 : | uint32_t block, | ||
241 : | int16_t dct_codes[64], | ||
242 : | uint32_t iDcScaler, | ||
243 : | int16_t predictors[8]) | ||
244 : | Isibaar | 1.1 | { |
245 : | uint8_t acpred_direction = pMB->acpred_directions[block]; | ||
246 : | edgomez | 1.4 | int16_t *pCurrent = pMB->pred_values[block]; |
247 : | Isibaar | 1.1 | uint32_t i; |
248 : | |||
249 : | suxen_drol | 1.6 | DPRINTF(DPRINTF_COEFF,"predictor[0] %i", predictors[0]); |
250 : | |||
251 : | edgomez | 1.13 | dct_codes[0] += predictors[0]; // dc prediction |
252 : | pCurrent[0] = dct_codes[0] * iDcScaler; | ||
253 : | Isibaar | 1.1 | |
254 : | edgomez | 1.4 | if (acpred_direction == 1) { |
255 : | for (i = 1; i < 8; i++) { | ||
256 : | Isibaar | 1.1 | int level = dct_codes[i] + predictors[i]; |
257 : | edgomez | 1.4 | |
258 : | suxen_drol | 1.6 | DPRINTF(DPRINTF_COEFF,"predictor[%i] %i",i, predictors[i]); |
259 : | |||
260 : | Isibaar | 1.1 | dct_codes[i] = level; |
261 : | pCurrent[i] = level; | ||
262 : | edgomez | 1.4 | pCurrent[i + 7] = dct_codes[i * 8]; |
263 : | Isibaar | 1.1 | } |
264 : | edgomez | 1.4 | } else if (acpred_direction == 2) { |
265 : | for (i = 1; i < 8; i++) { | ||
266 : | int level = dct_codes[i * 8] + predictors[i]; | ||
267 : | suxen_drol | 1.6 | DPRINTF(DPRINTF_COEFF,"predictor[%i] %i",i*8, predictors[i]); |
268 : | edgomez | 1.4 | |
269 : | dct_codes[i * 8] = level; | ||
270 : | pCurrent[i + 7] = level; | ||
271 : | Isibaar | 1.1 | pCurrent[i] = dct_codes[i]; |
272 : | } | ||
273 : | edgomez | 1.4 | } else { |
274 : | for (i = 1; i < 8; i++) { | ||
275 : | Isibaar | 1.1 | pCurrent[i] = dct_codes[i]; |
276 : | edgomez | 1.4 | pCurrent[i + 7] = dct_codes[i * 8]; |
277 : | Isibaar | 1.1 | } |
278 : | } | ||
279 : | } | ||
280 : | |||
281 : | |||
282 : | |||
283 : | edgomez | 1.13 | // ****************************************************************** |
284 : | // ****************************************************************** | ||
285 : | Isibaar | 1.1 | |
286 : | /* encoder: subtract predictors from qcoeff[] and calculate S1/S2 | ||
287 : | |||
288 : | edgomez | 1.13 | returns sum of coeefficients *saved* if prediction is enabled |
289 : | |||
290 : | edgomez | 1.2 | S1 = sum of all (qcoeff - prediction) |
291 : | S2 = sum of all qcoeff | ||
292 : | */ | ||
293 : | Isibaar | 1.1 | |
294 : | edgomez | 1.13 | int |
295 : | calc_acdc_coeff(MACROBLOCK * pMB, | ||
296 : | edgomez | 1.4 | uint32_t block, |
297 : | int16_t qcoeff[64], | ||
298 : | uint32_t iDcScaler, | ||
299 : | int16_t predictors[8]) | ||
300 : | Isibaar | 1.1 | { |
301 : | edgomez | 1.4 | int16_t *pCurrent = pMB->pred_values[block]; |
302 : | Isibaar | 1.1 | uint32_t i; |
303 : | edgomez | 1.13 | int S1 = 0, S2 = 0; |
304 : | Isibaar | 1.1 | |
305 : | |||
306 : | /* store current coeffs to pred_values[] for future prediction */ | ||
307 : | |||
308 : | edgomez | 1.13 | pCurrent[0] = qcoeff[0] * iDcScaler; |
309 : | edgomez | 1.4 | for (i = 1; i < 8; i++) { |
310 : | Isibaar | 1.1 | pCurrent[i] = qcoeff[i]; |
311 : | pCurrent[i + 7] = qcoeff[i * 8]; | ||
312 : | edgomez | 1.2 | } |
313 : | Isibaar | 1.1 | |
314 : | /* subtract predictors and store back in predictors[] */ | ||
315 : | |||
316 : | qcoeff[0] = qcoeff[0] - predictors[0]; | ||
317 : | |||
318 : | edgomez | 1.4 | if (pMB->acpred_directions[block] == 1) { |
319 : | for (i = 1; i < 8; i++) { | ||
320 : | Isibaar | 1.1 | int16_t level; |
321 : | |||
322 : | level = qcoeff[i]; | ||
323 : | edgomez | 1.13.2.4 | S2 += abs(level); |
324 : | Isibaar | 1.1 | level -= predictors[i]; |
325 : | edgomez | 1.13.2.4 | S1 += abs(level); |
326 : | Isibaar | 1.1 | predictors[i] = level; |
327 : | } | ||
328 : | edgomez | 1.13 | } else // acpred_direction == 2 |
329 : | Isibaar | 1.1 | { |
330 : | edgomez | 1.4 | for (i = 1; i < 8; i++) { |
331 : | Isibaar | 1.1 | int16_t level; |
332 : | |||
333 : | edgomez | 1.4 | level = qcoeff[i * 8]; |
334 : | edgomez | 1.13.2.4 | S2 += abs(level); |
335 : | Isibaar | 1.1 | level -= predictors[i]; |
336 : | edgomez | 1.13.2.4 | S1 += abs(level); |
337 : | Isibaar | 1.1 | predictors[i] = level; |
338 : | } | ||
339 : | |||
340 : | edgomez | 1.2 | } |
341 : | Isibaar | 1.1 | |
342 : | edgomez | 1.4 | |
343 : | edgomez | 1.2 | return S2 - S1; |
344 : | Isibaar | 1.1 | } |
345 : | |||
346 : | |||
347 : | edgomez | 1.13 | |
348 : | /* returns the bits *saved* if prediction is enabled */ | ||
349 : | |||
350 : | int | ||
351 : | calc_acdc_bits(MACROBLOCK * pMB, | ||
352 : | uint32_t block, | ||
353 : | int16_t qcoeff[64], | ||
354 : | uint32_t iDcScaler, | ||
355 : | int16_t predictors[8]) | ||
356 : | { | ||
357 : | const int direction = pMB->acpred_directions[block]; | ||
358 : | int16_t *pCurrent = pMB->pred_values[block]; | ||
359 : | int16_t tmp[8]; | ||
360 : | unsigned int i; | ||
361 : | int Z1, Z2; | ||
362 : | |||
363 : | /* store current coeffs to pred_values[] for future prediction */ | ||
364 : | pCurrent[0] = qcoeff[0] * iDcScaler; | ||
365 : | for (i = 1; i < 8; i++) { | ||
366 : | pCurrent[i] = qcoeff[i]; | ||
367 : | pCurrent[i + 7] = qcoeff[i * 8]; | ||
368 : | } | ||
369 : | |||
370 : | |||
371 : | /* dc prediction */ | ||
372 : | qcoeff[0] = qcoeff[0] - predictors[0]; | ||
373 : | |||
374 : | /* calc cost before ac prediction */ | ||
375 : | #ifdef BIGLUT | ||
376 : | Z2 = CodeCoeff_CalcBits(qcoeff, intra_table, scan_tables[0], 1); | ||
377 : | #else | ||
378 : | Z2 = CodeCoeffIntra_CalcBits(qcoeff, scan_tables[0]); | ||
379 : | #endif | ||
380 : | |||
381 : | /* apply ac prediction & calc cost*/ | ||
382 : | if (direction == 1) { | ||
383 : | for (i = 1; i < 8; i++) { | ||
384 : | tmp[i] = qcoeff[i]; | ||
385 : | qcoeff[i] -= predictors[i]; | ||
386 : | predictors[i] = qcoeff[i]; | ||
387 : | } | ||
388 : | }else{ // acpred_direction == 2 | ||
389 : | for (i = 1; i < 8; i++) { | ||
390 : | tmp[i] = qcoeff[i*8]; | ||
391 : | qcoeff[i*8] -= predictors[i]; | ||
392 : | predictors[i] = qcoeff[i*8]; | ||
393 : | } | ||
394 : | } | ||
395 : | |||
396 : | #ifdef BIGLUT | ||
397 : | Z1 = CodeCoeff_CalcBits(qcoeff, intra_table, scan_tables[direction], 1); | ||
398 : | #else | ||
399 : | Z1 = CodeCoeffIntra_CalcBits(qcoeff, scan_tables[direction]); | ||
400 : | #endif | ||
401 : | |||
402 : | /* undo prediction */ | ||
403 : | if (direction == 1) { | ||
404 : | for (i = 1; i < 8; i++) | ||
405 : | qcoeff[i] = tmp[i]; | ||
406 : | }else{ // acpred_direction == 2 | ||
407 : | for (i = 1; i < 8; i++) | ||
408 : | qcoeff[i*8] = tmp[i]; | ||
409 : | } | ||
410 : | |||
411 : | return Z2-Z1; | ||
412 : | } | ||
413 : | |||
414 : | Isibaar | 1.1 | /* apply predictors[] to qcoeff */ |
415 : | |||
416 : | edgomez | 1.4 | void |
417 : | apply_acdc(MACROBLOCK * pMB, | ||
418 : | uint32_t block, | ||
419 : | int16_t qcoeff[64], | ||
420 : | int16_t predictors[8]) | ||
421 : | Isibaar | 1.1 | { |
422 : | edgomez | 1.13 | unsigned int i; |
423 : | Isibaar | 1.1 | |
424 : | edgomez | 1.4 | if (pMB->acpred_directions[block] == 1) { |
425 : | edgomez | 1.13 | for (i = 1; i < 8; i++) |
426 : | Isibaar | 1.1 | qcoeff[i] = predictors[i]; |
427 : | edgomez | 1.4 | } else { |
428 : | edgomez | 1.13 | for (i = 1; i < 8; i++) |
429 : | edgomez | 1.4 | qcoeff[i * 8] = predictors[i]; |
430 : | edgomez | 1.2 | } |
431 : | Isibaar | 1.1 | } |
432 : | |||
433 : | |||
434 : | edgomez | 1.4 | void |
435 : | MBPrediction(FRAMEINFO * frame, | ||
436 : | uint32_t x, | ||
437 : | uint32_t y, | ||
438 : | uint32_t mb_width, | ||
439 : | int16_t qcoeff[6 * 64]) | ||
440 : | Isibaar | 1.1 | { |
441 : | edgomez | 1.2 | |
442 : | int32_t j; | ||
443 : | suxen_drol | 1.13.2.2 | int32_t iDcScaler, iQuant; |
444 : | edgomez | 1.13 | int S = 0; |
445 : | Isibaar | 1.1 | int16_t predictors[6][8]; |
446 : | |||
447 : | suxen_drol | 1.3 | MACROBLOCK *pMB = &frame->mbs[x + y * mb_width]; |
448 : | suxen_drol | 1.13.2.2 | iQuant = pMB->quant; |
449 : | Isibaar | 1.1 | |
450 : | edgomez | 1.2 | if ((pMB->mode == MODE_INTRA) || (pMB->mode == MODE_INTRA_Q)) { |
451 : | edgomez | 1.4 | |
452 : | for (j = 0; j < 6; j++) { | ||
453 : | edgomez | 1.13 | iDcScaler = get_dc_scaler(iQuant, j<4); |
454 : | Isibaar | 1.1 | |
455 : | edgomez | 1.4 | predict_acdc(frame->mbs, x, y, mb_width, j, &qcoeff[j * 64], |
456 : | suxen_drol | 1.6 | iQuant, iDcScaler, predictors[j], 0); |
457 : | edgomez | 1.4 | |
458 : | edgomez | 1.13.2.3 | if ((frame->vop_flags & XVID_VOP_HQACPRED)) |
459 : | edgomez | 1.13 | S += calc_acdc_bits(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]); |
460 : | else | ||
461 : | S += calc_acdc_coeff(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]); | ||
462 : | edgomez | 1.2 | |
463 : | Isibaar | 1.1 | } |
464 : | |||
465 : | edgomez | 1.13 | if (S<=0) { // dont predict |
466 : | for (j = 0; j < 6; j++) | ||
467 : | Isibaar | 1.1 | pMB->acpred_directions[j] = 0; |
468 : | edgomez | 1.13 | }else{ |
469 : | for (j = 0; j < 6; j++) | ||
470 : | edgomez | 1.4 | apply_acdc(pMB, j, &qcoeff[j * 64], predictors[j]); |
471 : | Isibaar | 1.1 | } |
472 : | edgomez | 1.13 | |
473 : | Isibaar | 1.1 | pMB->cbp = calc_cbp(qcoeff); |
474 : | } | ||
475 : | edgomez | 1.2 | |
476 : | suxen_drol | 1.6 | } |
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