Use av_clip_uint8 instead of equivalent but unoptimzed code,
[libav.git] / libavcodec / vp3.c
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d86053a4 1/*
67335dbc 2 * Copyright (C) 2003-2004 the ffmpeg project
d86053a4 3 *
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4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
b78e7197 9 * version 2.1 of the License, or (at your option) any later version.
d86053a4 10 *
b78e7197 11 * FFmpeg is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
b78e7197 17 * License along with FFmpeg; if not, write to the Free Software
5509bffa 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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19 */
20
21/**
bad5537e 22 * @file libavcodec/vp3.c
d86053a4 23 * On2 VP3 Video Decoder
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24 *
25 * VP3 Video Decoder by Mike Melanson (mike at multimedia.cx)
26 * For more information about the VP3 coding process, visit:
9db5bdfa 27 * http://wiki.multimedia.cx/index.php?title=On2_VP3
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28 *
29 * Theora decoder by Alex Beregszaszi
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30 */
31
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35#include <unistd.h>
36
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37#include "avcodec.h"
38#include "dsputil.h"
9106a698 39#include "get_bits.h"
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40
41#include "vp3data.h"
da91ed59 42#include "xiph.h"
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43
44#define FRAGMENT_PIXELS 8
45
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46typedef struct Coeff {
47 struct Coeff *next;
48 DCTELEM coeff;
49 uint8_t index;
50} Coeff;
51
52//FIXME split things out into their own arrays
d86053a4 53typedef struct Vp3Fragment {
7beddb12 54 Coeff *next_coeff;
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55 /* address of first pixel taking into account which plane the fragment
56 * lives on as well as the plane stride */
57 int first_pixel;
58 /* this is the macroblock that the fragment belongs to */
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59 uint16_t macroblock;
60 uint8_t coding_method;
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61 int8_t motion_x;
62 int8_t motion_y;
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63} Vp3Fragment;
64
65#define SB_NOT_CODED 0
66#define SB_PARTIALLY_CODED 1
67#define SB_FULLY_CODED 2
68
69#define MODE_INTER_NO_MV 0
70#define MODE_INTRA 1
71#define MODE_INTER_PLUS_MV 2
72#define MODE_INTER_LAST_MV 3
73#define MODE_INTER_PRIOR_LAST 4
74#define MODE_USING_GOLDEN 5
75#define MODE_GOLDEN_MV 6
76#define MODE_INTER_FOURMV 7
77#define CODING_MODE_COUNT 8
78
79/* special internal mode */
80#define MODE_COPY 8
81
82/* There are 6 preset schemes, plus a free-form scheme */
e8e47435 83static const int ModeAlphabet[6][CODING_MODE_COUNT] =
d86053a4 84{
d86053a4 85 /* scheme 1: Last motion vector dominates */
115329f1 86 { MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST,
d86053a4 87 MODE_INTER_PLUS_MV, MODE_INTER_NO_MV,
115329f1 88 MODE_INTRA, MODE_USING_GOLDEN,
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89 MODE_GOLDEN_MV, MODE_INTER_FOURMV },
90
91 /* scheme 2 */
115329f1 92 { MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST,
d86053a4 93 MODE_INTER_NO_MV, MODE_INTER_PLUS_MV,
115329f1 94 MODE_INTRA, MODE_USING_GOLDEN,
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95 MODE_GOLDEN_MV, MODE_INTER_FOURMV },
96
97 /* scheme 3 */
115329f1 98 { MODE_INTER_LAST_MV, MODE_INTER_PLUS_MV,
d86053a4 99 MODE_INTER_PRIOR_LAST, MODE_INTER_NO_MV,
115329f1 100 MODE_INTRA, MODE_USING_GOLDEN,
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101 MODE_GOLDEN_MV, MODE_INTER_FOURMV },
102
103 /* scheme 4 */
115329f1 104 { MODE_INTER_LAST_MV, MODE_INTER_PLUS_MV,
d86053a4 105 MODE_INTER_NO_MV, MODE_INTER_PRIOR_LAST,
115329f1 106 MODE_INTRA, MODE_USING_GOLDEN,
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107 MODE_GOLDEN_MV, MODE_INTER_FOURMV },
108
109 /* scheme 5: No motion vector dominates */
115329f1 110 { MODE_INTER_NO_MV, MODE_INTER_LAST_MV,
d86053a4 111 MODE_INTER_PRIOR_LAST, MODE_INTER_PLUS_MV,
115329f1 112 MODE_INTRA, MODE_USING_GOLDEN,
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113 MODE_GOLDEN_MV, MODE_INTER_FOURMV },
114
115 /* scheme 6 */
115329f1 116 { MODE_INTER_NO_MV, MODE_USING_GOLDEN,
d86053a4 117 MODE_INTER_LAST_MV, MODE_INTER_PRIOR_LAST,
115329f1 118 MODE_INTER_PLUS_MV, MODE_INTRA,
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119 MODE_GOLDEN_MV, MODE_INTER_FOURMV },
120
121};
122
123#define MIN_DEQUANT_VAL 2
124
125typedef struct Vp3DecodeContext {
126 AVCodecContext *avctx;
f44ee2c3 127 int theora, theora_tables;
3c3f113e 128 int version;
d86053a4 129 int width, height;
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130 AVFrame golden_frame;
131 AVFrame last_frame;
132 AVFrame current_frame;
133 int keyframe;
134 DSPContext dsp;
9a7ad925 135 int flipped_image;
d86053a4 136
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137 int qis[3];
138 int nqis;
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139 int quality_index;
140 int last_quality_index;
141
142 int superblock_count;
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143 int y_superblock_width;
144 int y_superblock_height;
145 int c_superblock_width;
146 int c_superblock_height;
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147 int u_superblock_start;
148 int v_superblock_start;
149 unsigned char *superblock_coding;
150
151 int macroblock_count;
152 int macroblock_width;
153 int macroblock_height;
154
155 int fragment_count;
156 int fragment_width;
157 int fragment_height;
158
159 Vp3Fragment *all_fragments;
36e16253 160 uint8_t *coeff_counts;
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161 Coeff *coeffs;
162 Coeff *next_coeff;
1abbf64e 163 int fragment_start[3];
115329f1 164
36af0c95 165 ScanTable scantable;
115329f1 166
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167 /* tables */
168 uint16_t coded_dc_scale_factor[64];
67335dbc 169 uint32_t coded_ac_scale_factor[64];
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170 uint8_t base_matrix[384][64];
171 uint8_t qr_count[2][3];
172 uint8_t qr_size [2][3][64];
173 uint16_t qr_base[2][3][64];
d86053a4 174
f4433de9 175 /* this is a list of indexes into the all_fragments array indicating
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176 * which of the fragments are coded */
177 int *coded_fragment_list;
178 int coded_fragment_list_index;
5e534865 179 int pixel_addresses_initialized;
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180
181 VLC dc_vlc[16];
182 VLC ac_vlc_1[16];
183 VLC ac_vlc_2[16];
184 VLC ac_vlc_3[16];
185 VLC ac_vlc_4[16];
186
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187 VLC superblock_run_length_vlc;
188 VLC fragment_run_length_vlc;
189 VLC mode_code_vlc;
190 VLC motion_vector_vlc;
191
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192 /* these arrays need to be on 16-byte boundaries since SSE2 operations
193 * index into them */
187c9be7 194 DECLARE_ALIGNED_16(int16_t, qmat[2][4][64]); //<qmat[is_inter][plane]
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195
196 /* This table contains superblock_count * 16 entries. Each set of 16
f4433de9 197 * numbers corresponds to the fragment indexes 0..15 of the superblock.
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198 * An entry will be -1 to indicate that no entry corresponds to that
199 * index. */
200 int *superblock_fragments;
201
202 /* This table contains superblock_count * 4 entries. Each set of 4
f4433de9 203 * numbers corresponds to the macroblock indexes 0..3 of the superblock.
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204 * An entry will be -1 to indicate that no entry corresponds to that
205 * index. */
206 int *superblock_macroblocks;
207
208 /* This table contains macroblock_count * 6 entries. Each set of 6
f4433de9 209 * numbers corresponds to the fragment indexes 0..5 which comprise
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210 * the macroblock (4 Y fragments and 2 C fragments). */
211 int *macroblock_fragments;
115329f1 212 /* This is an array that indicates how a particular macroblock
74c0ac12 213 * is coded. */
96a7e73b 214 unsigned char *macroblock_coding;
d86053a4 215
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216 int first_coded_y_fragment;
217 int first_coded_c_fragment;
218 int last_coded_y_fragment;
219 int last_coded_c_fragment;
220
a2f11b3c 221 uint8_t edge_emu_buffer[9*2048]; //FIXME dynamic alloc
191e8ca7 222 int8_t qscale_table[2048]; //FIXME dynamic alloc (width+15)/16
39922395 223
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224 /* Huffman decode */
225 int hti;
226 unsigned int hbits;
227 int entries;
228 int huff_code_size;
229 uint16_t huffman_table[80][32][2];
230
51ace577 231 uint8_t filter_limit_values[64];
357f45d9 232 DECLARE_ALIGNED_8(int, bounding_values_array[256+2]);
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233} Vp3DecodeContext;
234
235/************************************************************************
236 * VP3 specific functions
237 ************************************************************************/
238
239/*
240 * This function sets up all of the various blocks mappings:
241 * superblocks <-> fragments, macroblocks <-> fragments,
242 * superblocks <-> macroblocks
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243 *
244 * Returns 0 is successful; returns 1 if *anything* went wrong.
d86053a4 245 */
115329f1 246static int init_block_mapping(Vp3DecodeContext *s)
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247{
248 int i, j;
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249 signed int hilbert_walk_mb[4];
250
251 int current_fragment = 0;
252 int current_width = 0;
253 int current_height = 0;
254 int right_edge = 0;
255 int bottom_edge = 0;
256 int superblock_row_inc = 0;
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257 int mapping_index = 0;
258
259 int current_macroblock;
260 int c_fragment;
261
262 signed char travel_width[16] = {
115329f1 263 1, 1, 0, -1,
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264 0, 0, 1, 0,
265 1, 0, 1, 0,
266 0, -1, 0, 1
267 };
268
269 signed char travel_height[16] = {
270 0, 0, 1, 0,
271 1, 1, 0, -1,
272 0, 1, 0, -1,
273 -1, 0, -1, 0
274 };
275
276 signed char travel_width_mb[4] = {
277 1, 0, 1, 0
278 };
279
280 signed char travel_height_mb[4] = {
281 0, 1, 0, -1
282 };
283
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284 hilbert_walk_mb[0] = 1;
285 hilbert_walk_mb[1] = s->macroblock_width;
286 hilbert_walk_mb[2] = 1;
287 hilbert_walk_mb[3] = -s->macroblock_width;
288
289 /* iterate through each superblock (all planes) and map the fragments */
290 for (i = 0; i < s->superblock_count; i++) {
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291 /* time to re-assign the limits? */
292 if (i == 0) {
293
294 /* start of Y superblocks */
295 right_edge = s->fragment_width;
296 bottom_edge = s->fragment_height;
892fc83e 297 current_width = -1;
d86053a4 298 current_height = 0;
115329f1 299 superblock_row_inc = 3 * s->fragment_width -
892fc83e 300 (s->y_superblock_width * 4 - s->fragment_width);
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301
302 /* the first operation for this variable is to advance by 1 */
303 current_fragment = -1;
304
305 } else if (i == s->u_superblock_start) {
306
307 /* start of U superblocks */
308 right_edge = s->fragment_width / 2;
309 bottom_edge = s->fragment_height / 2;
892fc83e 310 current_width = -1;
d86053a4 311 current_height = 0;
115329f1 312 superblock_row_inc = 3 * (s->fragment_width / 2) -
892fc83e 313 (s->c_superblock_width * 4 - s->fragment_width / 2);
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314
315 /* the first operation for this variable is to advance by 1 */
1abbf64e 316 current_fragment = s->fragment_start[1] - 1;
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317
318 } else if (i == s->v_superblock_start) {
319
320 /* start of V superblocks */
321 right_edge = s->fragment_width / 2;
322 bottom_edge = s->fragment_height / 2;
892fc83e 323 current_width = -1;
d86053a4 324 current_height = 0;
115329f1 325 superblock_row_inc = 3 * (s->fragment_width / 2) -
892fc83e 326 (s->c_superblock_width * 4 - s->fragment_width / 2);
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327
328 /* the first operation for this variable is to advance by 1 */
1abbf64e 329 current_fragment = s->fragment_start[2] - 1;
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330
331 }
332
892fc83e 333 if (current_width >= right_edge - 1) {
d86053a4 334 /* reset width and move to next superblock row */
892fc83e 335 current_width = -1;
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336 current_height += 4;
337
338 /* fragment is now at the start of a new superblock row */
339 current_fragment += superblock_row_inc;
340 }
341
342 /* iterate through all 16 fragments in a superblock */
343 for (j = 0; j < 16; j++) {
684d9e36 344 current_fragment += travel_width[j] + right_edge * travel_height[j];
892fc83e 345 current_width += travel_width[j];
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346 current_height += travel_height[j];
347
348 /* check if the fragment is in bounds */
892fc83e 349 if ((current_width < right_edge) &&
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350 (current_height < bottom_edge)) {
351 s->superblock_fragments[mapping_index] = current_fragment;
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352 } else {
353 s->superblock_fragments[mapping_index] = -1;
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354 }
355
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356 mapping_index++;
357 }
358 }
359
360 /* initialize the superblock <-> macroblock mapping; iterate through
361 * all of the Y plane superblocks to build this mapping */
362 right_edge = s->macroblock_width;
363 bottom_edge = s->macroblock_height;
892fc83e 364 current_width = -1;
d86053a4 365 current_height = 0;
892fc83e 366 superblock_row_inc = s->macroblock_width -
cea96420 367 (s->y_superblock_width * 2 - s->macroblock_width);
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368 mapping_index = 0;
369 current_macroblock = -1;
370 for (i = 0; i < s->u_superblock_start; i++) {
371
96a7e73b 372 if (current_width >= right_edge - 1) {
d86053a4 373 /* reset width and move to next superblock row */
96a7e73b 374 current_width = -1;
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375 current_height += 2;
376
377 /* macroblock is now at the start of a new superblock row */
378 current_macroblock += superblock_row_inc;
379 }
380
381 /* iterate through each potential macroblock in the superblock */
382 for (j = 0; j < 4; j++) {
383 current_macroblock += hilbert_walk_mb[j];
892fc83e 384 current_width += travel_width_mb[j];
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385 current_height += travel_height_mb[j];
386
387 /* check if the macroblock is in bounds */
892fc83e 388 if ((current_width < right_edge) &&
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389 (current_height < bottom_edge)) {
390 s->superblock_macroblocks[mapping_index] = current_macroblock;
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391 } else {
392 s->superblock_macroblocks[mapping_index] = -1;
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393 }
394
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395 mapping_index++;
396 }
397 }
398
399 /* initialize the macroblock <-> fragment mapping */
400 current_fragment = 0;
401 current_macroblock = 0;
402 mapping_index = 0;
403 for (i = 0; i < s->fragment_height; i += 2) {
404
405 for (j = 0; j < s->fragment_width; j += 2) {
406
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407 s->all_fragments[current_fragment].macroblock = current_macroblock;
408 s->macroblock_fragments[mapping_index++] = current_fragment;
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409
410 if (j + 1 < s->fragment_width) {
411 s->all_fragments[current_fragment + 1].macroblock = current_macroblock;
412 s->macroblock_fragments[mapping_index++] = current_fragment + 1;
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413 } else
414 s->macroblock_fragments[mapping_index++] = -1;
415
416 if (i + 1 < s->fragment_height) {
115329f1 417 s->all_fragments[current_fragment + s->fragment_width].macroblock =
d86053a4 418 current_macroblock;
115329f1 419 s->macroblock_fragments[mapping_index++] =
d86053a4 420 current_fragment + s->fragment_width;
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421 } else
422 s->macroblock_fragments[mapping_index++] = -1;
423
424 if ((j + 1 < s->fragment_width) && (i + 1 < s->fragment_height)) {
115329f1 425 s->all_fragments[current_fragment + s->fragment_width + 1].macroblock =
d86053a4 426 current_macroblock;
115329f1 427 s->macroblock_fragments[mapping_index++] =
d86053a4 428 current_fragment + s->fragment_width + 1;
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429 } else
430 s->macroblock_fragments[mapping_index++] = -1;
431
432 /* C planes */
1abbf64e 433 c_fragment = s->fragment_start[1] +
d86053a4 434 (i * s->fragment_width / 4) + (j / 2);
892fc83e 435 s->all_fragments[c_fragment].macroblock = s->macroblock_count;
d86053a4 436 s->macroblock_fragments[mapping_index++] = c_fragment;
d86053a4 437
1abbf64e 438 c_fragment = s->fragment_start[2] +
d86053a4 439 (i * s->fragment_width / 4) + (j / 2);
892fc83e 440 s->all_fragments[c_fragment].macroblock = s->macroblock_count;
d86053a4 441 s->macroblock_fragments[mapping_index++] = c_fragment;
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442
443 if (j + 2 <= s->fragment_width)
444 current_fragment += 2;
115329f1 445 else
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446 current_fragment++;
447 current_macroblock++;
448 }
449
450 current_fragment += s->fragment_width;
451 }
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452
453 return 0; /* successful path out */
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454}
455
456/*
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457 * This function wipes out all of the fragment data.
458 */
459static void init_frame(Vp3DecodeContext *s, GetBitContext *gb)
460{
461 int i;
462
463 /* zero out all of the fragment information */
464 s->coded_fragment_list_index = 0;
465 for (i = 0; i < s->fragment_count; i++) {
36e16253 466 s->coeff_counts[i] = 0;
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467 s->all_fragments[i].motion_x = 127;
468 s->all_fragments[i].motion_y = 127;
469 s->all_fragments[i].next_coeff= NULL;
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470 s->coeffs[i].index=
471 s->coeffs[i].coeff=0;
472 s->coeffs[i].next= NULL;
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473 }
474}
475
476/*
f44b08a5 477 * This function sets up the dequantization tables used for a particular
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478 * frame.
479 */
480static void init_dequantizer(Vp3DecodeContext *s)
481{
67335dbc 482 int ac_scale_factor = s->coded_ac_scale_factor[s->quality_index];
f44ee2c3 483 int dc_scale_factor = s->coded_dc_scale_factor[s->quality_index];
36c32bdd 484 int i, plane, inter, qri, bmi, bmj, qistart;
d86053a4 485
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486 for(inter=0; inter<2; inter++){
487 for(plane=0; plane<3; plane++){
488 int sum=0;
489 for(qri=0; qri<s->qr_count[inter][plane]; qri++){
490 sum+= s->qr_size[inter][plane][qri];
491 if(s->quality_index <= sum)
492 break;
493 }
494 qistart= sum - s->qr_size[inter][plane][qri];
495 bmi= s->qr_base[inter][plane][qri ];
496 bmj= s->qr_base[inter][plane][qri+1];
497 for(i=0; i<64; i++){
498 int coeff= ( 2*(sum -s->quality_index)*s->base_matrix[bmi][i]
499 - 2*(qistart-s->quality_index)*s->base_matrix[bmj][i]
500 + s->qr_size[inter][plane][qri])
501 / (2*s->qr_size[inter][plane][qri]);
502
a14ab4e4 503 int qmin= 8<<(inter + !i);
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504 int qscale= i ? ac_scale_factor : dc_scale_factor;
505
7f065b36 506 s->qmat[inter][plane][s->dsp.idct_permutation[i]]= av_clip((qscale * coeff)/100 * 4, qmin, 4096);
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507 }
508 }
d86053a4 509 }
115329f1 510
187c9be7 511 memset(s->qscale_table, (FFMAX(s->qmat[0][0][1], s->qmat[0][1][1])+8)/16, 512); //FIXME finetune
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512}
513
514/*
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515 * This function initializes the loop filter boundary limits if the frame's
516 * quality index is different from the previous frame's.
517 */
518static void init_loop_filter(Vp3DecodeContext *s)
519{
520 int *bounding_values= s->bounding_values_array+127;
521 int filter_limit;
522 int x;
523
524 filter_limit = s->filter_limit_values[s->quality_index];
525
526 /* set up the bounding values */
527 memset(s->bounding_values_array, 0, 256 * sizeof(int));
528 for (x = 0; x < filter_limit; x++) {
529 bounding_values[-x - filter_limit] = -filter_limit + x;
530 bounding_values[-x] = -x;
531 bounding_values[x] = x;
532 bounding_values[x + filter_limit] = filter_limit - x;
533 }
357f45d9 534 bounding_values[129] = bounding_values[130] = filter_limit * 0x02020202;
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535}
536
537/*
115329f1 538 * This function unpacks all of the superblock/macroblock/fragment coding
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539 * information from the bitstream.
540 */
892fc83e 541static int unpack_superblocks(Vp3DecodeContext *s, GetBitContext *gb)
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542{
543 int bit = 0;
544 int current_superblock = 0;
545 int current_run = 0;
546 int decode_fully_flags = 0;
547 int decode_partial_blocks = 0;
22493ab9 548 int first_c_fragment_seen;
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549
550 int i, j;
551 int current_fragment;
552
d86053a4 553 if (s->keyframe) {
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554 memset(s->superblock_coding, SB_FULLY_CODED, s->superblock_count);
555
556 } else {
557
558 /* unpack the list of partially-coded superblocks */
5fc32c27 559 bit = get_bits1(gb);
115329f1 560 /* toggle the bit because as soon as the first run length is
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561 * fetched the bit will be toggled again */
562 bit ^= 1;
563 while (current_superblock < s->superblock_count) {
b5da3635 564 if (current_run-- == 0) {
d86053a4 565 bit ^= 1;
115329f1 566 current_run = get_vlc2(gb,
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MN
567 s->superblock_run_length_vlc.table, 6, 2);
568 if (current_run == 33)
d8278bab 569 current_run += get_bits(gb, 12);
d86053a4
MM
570
571 /* if any of the superblocks are not partially coded, flag
572 * a boolean to decode the list of fully-coded superblocks */
642d7e84 573 if (bit == 0) {
d86053a4 574 decode_fully_flags = 1;
642d7e84 575 } else {
d86053a4 576
642d7e84
MM
577 /* make a note of the fact that there are partially coded
578 * superblocks */
579 decode_partial_blocks = 1;
580 }
d86053a4 581 }
b5da3635 582 s->superblock_coding[current_superblock++] = bit;
d86053a4
MM
583 }
584
585 /* unpack the list of fully coded superblocks if any of the blocks were
586 * not marked as partially coded in the previous step */
587 if (decode_fully_flags) {
588
589 current_superblock = 0;
590 current_run = 0;
5fc32c27 591 bit = get_bits1(gb);
115329f1 592 /* toggle the bit because as soon as the first run length is
d86053a4
MM
593 * fetched the bit will be toggled again */
594 bit ^= 1;
595 while (current_superblock < s->superblock_count) {
596
597 /* skip any superblocks already marked as partially coded */
598 if (s->superblock_coding[current_superblock] == SB_NOT_CODED) {
599
b5da3635 600 if (current_run-- == 0) {
d86053a4 601 bit ^= 1;
115329f1 602 current_run = get_vlc2(gb,
b5da3635
MN
603 s->superblock_run_length_vlc.table, 6, 2);
604 if (current_run == 33)
d8278bab 605 current_run += get_bits(gb, 12);
d86053a4 606 }
b5da3635 607 s->superblock_coding[current_superblock] = 2*bit;
d86053a4
MM
608 }
609 current_superblock++;
610 }
611 }
612
613 /* if there were partial blocks, initialize bitstream for
614 * unpacking fragment codings */
615 if (decode_partial_blocks) {
616
617 current_run = 0;
5fc32c27 618 bit = get_bits1(gb);
115329f1 619 /* toggle the bit because as soon as the first run length is
d86053a4
MM
620 * fetched the bit will be toggled again */
621 bit ^= 1;
622 }
623 }
624
625 /* figure out which fragments are coded; iterate through each
626 * superblock (all planes) */
627 s->coded_fragment_list_index = 0;
7beddb12 628 s->next_coeff= s->coeffs + s->fragment_count;
04331882
MM
629 s->first_coded_y_fragment = s->first_coded_c_fragment = 0;
630 s->last_coded_y_fragment = s->last_coded_c_fragment = -1;
22493ab9 631 first_c_fragment_seen = 0;
96a7e73b 632 memset(s->macroblock_coding, MODE_COPY, s->macroblock_count);
d86053a4
MM
633 for (i = 0; i < s->superblock_count; i++) {
634
635 /* iterate through all 16 fragments in a superblock */
636 for (j = 0; j < 16; j++) {
637
638 /* if the fragment is in bounds, check its coding status */
639 current_fragment = s->superblock_fragments[i * 16 + j];
892fc83e 640 if (current_fragment >= s->fragment_count) {
9b879566 641 av_log(s->avctx, AV_LOG_ERROR, " vp3:unpack_superblocks(): bad fragment number (%d >= %d)\n",
892fc83e
MM
642 current_fragment, s->fragment_count);
643 return 1;
644 }
d86053a4
MM
645 if (current_fragment != -1) {
646 if (s->superblock_coding[i] == SB_NOT_CODED) {
647
648 /* copy all the fragments from the prior frame */
115329f1 649 s->all_fragments[current_fragment].coding_method =
d86053a4
MM
650 MODE_COPY;
651
652 } else if (s->superblock_coding[i] == SB_PARTIALLY_CODED) {
653
654 /* fragment may or may not be coded; this is the case
655 * that cares about the fragment coding runs */
b5da3635 656 if (current_run-- == 0) {
d86053a4 657 bit ^= 1;
115329f1 658 current_run = get_vlc2(gb,
b5da3635 659 s->fragment_run_length_vlc.table, 5, 2);
d86053a4
MM
660 }
661
662 if (bit) {
115329f1 663 /* default mode; actual mode will be decoded in
22493ab9 664 * the next phase */
115329f1 665 s->all_fragments[current_fragment].coding_method =
d86053a4 666 MODE_INTER_NO_MV;
7beddb12 667 s->all_fragments[current_fragment].next_coeff= s->coeffs + current_fragment;
115329f1 668 s->coded_fragment_list[s->coded_fragment_list_index] =
d86053a4 669 current_fragment;
1abbf64e 670 if ((current_fragment >= s->fragment_start[1]) &&
22493ab9
MM
671 (s->last_coded_y_fragment == -1) &&
672 (!first_c_fragment_seen)) {
04331882
MM
673 s->first_coded_c_fragment = s->coded_fragment_list_index;
674 s->last_coded_y_fragment = s->first_coded_c_fragment - 1;
22493ab9 675 first_c_fragment_seen = 1;
04331882
MM
676 }
677 s->coded_fragment_list_index++;
96a7e73b 678 s->macroblock_coding[s->all_fragments[current_fragment].macroblock] = MODE_INTER_NO_MV;
d86053a4
MM
679 } else {
680 /* not coded; copy this fragment from the prior frame */
681 s->all_fragments[current_fragment].coding_method =
682 MODE_COPY;
d86053a4
MM
683 }
684
d86053a4
MM
685 } else {
686
687 /* fragments are fully coded in this superblock; actual
688 * coding will be determined in next step */
115329f1 689 s->all_fragments[current_fragment].coding_method =
d86053a4 690 MODE_INTER_NO_MV;
7beddb12 691 s->all_fragments[current_fragment].next_coeff= s->coeffs + current_fragment;
115329f1 692 s->coded_fragment_list[s->coded_fragment_list_index] =
d86053a4 693 current_fragment;
1abbf64e 694 if ((current_fragment >= s->fragment_start[1]) &&
22493ab9
MM
695 (s->last_coded_y_fragment == -1) &&
696 (!first_c_fragment_seen)) {
04331882
MM
697 s->first_coded_c_fragment = s->coded_fragment_list_index;
698 s->last_coded_y_fragment = s->first_coded_c_fragment - 1;
22493ab9 699 first_c_fragment_seen = 1;
04331882
MM
700 }
701 s->coded_fragment_list_index++;
96a7e73b 702 s->macroblock_coding[s->all_fragments[current_fragment].macroblock] = MODE_INTER_NO_MV;
d86053a4
MM
703 }
704 }
705 }
706 }
04331882 707
22493ab9
MM
708 if (!first_c_fragment_seen)
709 /* only Y fragments coded in this frame */
04331882 710 s->last_coded_y_fragment = s->coded_fragment_list_index - 1;
115329f1 711 else
642d7e84 712 /* end the list of coded C fragments */
04331882 713 s->last_coded_c_fragment = s->coded_fragment_list_index - 1;
22493ab9 714
892fc83e 715 return 0;
d86053a4
MM
716}
717
718/*
719 * This function unpacks all the coding mode data for individual macroblocks
720 * from the bitstream.
721 */
892fc83e 722static int unpack_modes(Vp3DecodeContext *s, GetBitContext *gb)
d86053a4
MM
723{
724 int i, j, k;
725 int scheme;
726 int current_macroblock;
727 int current_fragment;
728 int coding_mode;
e8e47435 729 int custom_mode_alphabet[CODING_MODE_COUNT];
d86053a4 730
d86053a4 731 if (s->keyframe) {
d86053a4
MM
732 for (i = 0; i < s->fragment_count; i++)
733 s->all_fragments[i].coding_method = MODE_INTRA;
734
735 } else {
736
737 /* fetch the mode coding scheme for this frame */
738 scheme = get_bits(gb, 3);
d86053a4
MM
739
740 /* is it a custom coding scheme? */
741 if (scheme == 0) {
d86053a4 742 for (i = 0; i < 8; i++)
2c823b3c
AC
743 custom_mode_alphabet[i] = MODE_INTER_NO_MV;
744 for (i = 0; i < 8; i++)
e8e47435 745 custom_mode_alphabet[get_bits(gb, 3)] = i;
d86053a4
MM
746 }
747
d86053a4
MM
748 /* iterate through all of the macroblocks that contain 1 or more
749 * coded fragments */
750 for (i = 0; i < s->u_superblock_start; i++) {
751
752 for (j = 0; j < 4; j++) {
753 current_macroblock = s->superblock_macroblocks[i * 4 + j];
754 if ((current_macroblock == -1) ||
96a7e73b 755 (s->macroblock_coding[current_macroblock] == MODE_COPY))
d86053a4 756 continue;
892fc83e 757 if (current_macroblock >= s->macroblock_count) {
9b879566 758 av_log(s->avctx, AV_LOG_ERROR, " vp3:unpack_modes(): bad macroblock number (%d >= %d)\n",
892fc83e
MM
759 current_macroblock, s->macroblock_count);
760 return 1;
761 }
d86053a4
MM
762
763 /* mode 7 means get 3 bits for each coding mode */
764 if (scheme == 7)
765 coding_mode = get_bits(gb, 3);
e8e47435
SG
766 else if(scheme == 0)
767 coding_mode = custom_mode_alphabet
768 [get_vlc2(gb, s->mode_code_vlc.table, 3, 3)];
d86053a4 769 else
e8e47435 770 coding_mode = ModeAlphabet[scheme-1]
0ad72bdd 771 [get_vlc2(gb, s->mode_code_vlc.table, 3, 3)];
d86053a4 772
96a7e73b 773 s->macroblock_coding[current_macroblock] = coding_mode;
d86053a4 774 for (k = 0; k < 6; k++) {
115329f1 775 current_fragment =
d86053a4 776 s->macroblock_fragments[current_macroblock * 6 + k];
892fc83e
MM
777 if (current_fragment == -1)
778 continue;
779 if (current_fragment >= s->fragment_count) {
9b879566 780 av_log(s->avctx, AV_LOG_ERROR, " vp3:unpack_modes(): bad fragment number (%d >= %d)\n",
892fc83e
MM
781 current_fragment, s->fragment_count);
782 return 1;
783 }
115329f1 784 if (s->all_fragments[current_fragment].coding_method !=
d86053a4
MM
785 MODE_COPY)
786 s->all_fragments[current_fragment].coding_method =
787 coding_mode;
788 }
d86053a4
MM
789 }
790 }
791 }
892fc83e
MM
792
793 return 0;
44ae98dd
MM
794}
795
796/*
d86053a4
MM
797 * This function unpacks all the motion vectors for the individual
798 * macroblocks from the bitstream.
799 */
892fc83e 800static int unpack_vectors(Vp3DecodeContext *s, GetBitContext *gb)
d86053a4 801{
feaf1a73 802 int i, j, k, l;
d86053a4
MM
803 int coding_mode;
804 int motion_x[6];
805 int motion_y[6];
806 int last_motion_x = 0;
807 int last_motion_y = 0;
808 int prior_last_motion_x = 0;
809 int prior_last_motion_y = 0;
810 int current_macroblock;
811 int current_fragment;
812
6599e2a7 813 if (s->keyframe)
6298f49f 814 return 0;
10f38380 815
1ae4518d
DC
816 memset(motion_x, 0, 6 * sizeof(int));
817 memset(motion_y, 0, 6 * sizeof(int));
d86053a4 818
1ae4518d
DC
819 /* coding mode 0 is the VLC scheme; 1 is the fixed code scheme */
820 coding_mode = get_bits1(gb);
d86053a4 821
1ae4518d
DC
822 /* iterate through all of the macroblocks that contain 1 or more
823 * coded fragments */
824 for (i = 0; i < s->u_superblock_start; i++) {
d86053a4 825
1ae4518d
DC
826 for (j = 0; j < 4; j++) {
827 current_macroblock = s->superblock_macroblocks[i * 4 + j];
828 if ((current_macroblock == -1) ||
829 (s->macroblock_coding[current_macroblock] == MODE_COPY))
830 continue;
831 if (current_macroblock >= s->macroblock_count) {
832 av_log(s->avctx, AV_LOG_ERROR, " vp3:unpack_vectors(): bad macroblock number (%d >= %d)\n",
833 current_macroblock, s->macroblock_count);
834 return 1;
835 }
d86053a4 836
1ae4518d
DC
837 current_fragment = s->macroblock_fragments[current_macroblock * 6];
838 if (current_fragment >= s->fragment_count) {
839 av_log(s->avctx, AV_LOG_ERROR, " vp3:unpack_vectors(): bad fragment number (%d >= %d\n",
840 current_fragment, s->fragment_count);
841 return 1;
842 }
843 switch (s->macroblock_coding[current_macroblock]) {
844
845 case MODE_INTER_PLUS_MV:
846 case MODE_GOLDEN_MV:
847 /* all 6 fragments use the same motion vector */
848 if (coding_mode == 0) {
849 motion_x[0] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
850 motion_y[0] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
851 } else {
852 motion_x[0] = fixed_motion_vector_table[get_bits(gb, 6)];
853 motion_y[0] = fixed_motion_vector_table[get_bits(gb, 6)];
892fc83e 854 }
7f9926a4 855
1ae4518d
DC
856 for (k = 1; k < 6; k++) {
857 motion_x[k] = motion_x[0];
858 motion_y[k] = motion_y[0];
859 }
d86053a4 860
1ae4518d
DC
861 /* vector maintenance, only on MODE_INTER_PLUS_MV */
862 if (s->macroblock_coding[current_macroblock] ==
863 MODE_INTER_PLUS_MV) {
e32e2d56
AJ
864 prior_last_motion_x = last_motion_x;
865 prior_last_motion_y = last_motion_y;
1ae4518d
DC
866 last_motion_x = motion_x[0];
867 last_motion_y = motion_y[0];
868 }
869 break;
870
871 case MODE_INTER_FOURMV:
872 /* vector maintenance */
873 prior_last_motion_x = last_motion_x;
874 prior_last_motion_y = last_motion_y;
875
876 /* fetch 4 vectors from the bitstream, one for each
877 * Y fragment, then average for the C fragment vectors */
878 motion_x[4] = motion_y[4] = 0;
879 for (k = 0; k < 4; k++) {
880 for (l = 0; l < s->coded_fragment_list_index; l++)
881 if (s->coded_fragment_list[l] == s->macroblock_fragments[6*current_macroblock + k])
882 break;
883 if (l < s->coded_fragment_list_index) {
884 if (coding_mode == 0) {
885 motion_x[k] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
886 motion_y[k] = motion_vector_table[get_vlc2(gb, s->motion_vector_vlc.table, 6, 2)];
feaf1a73 887 } else {
1ae4518d
DC
888 motion_x[k] = fixed_motion_vector_table[get_bits(gb, 6)];
889 motion_y[k] = fixed_motion_vector_table[get_bits(gb, 6)];
feaf1a73 890 }
1ae4518d
DC
891 last_motion_x = motion_x[k];
892 last_motion_y = motion_y[k];
893 } else {
894 motion_x[k] = 0;
895 motion_y[k] = 0;
d86053a4 896 }
1ae4518d
DC
897 motion_x[4] += motion_x[k];
898 motion_y[4] += motion_y[k];
899 }
d86053a4 900
1ae4518d
DC
901 motion_x[5]=
902 motion_x[4]= RSHIFT(motion_x[4], 2);
903 motion_y[5]=
904 motion_y[4]= RSHIFT(motion_y[4], 2);
905 break;
906
907 case MODE_INTER_LAST_MV:
908 /* all 6 fragments use the last motion vector */
909 motion_x[0] = last_motion_x;
910 motion_y[0] = last_motion_y;
911 for (k = 1; k < 6; k++) {
912 motion_x[k] = motion_x[0];
913 motion_y[k] = motion_y[0];
914 }
d86053a4 915
1ae4518d
DC
916 /* no vector maintenance (last vector remains the
917 * last vector) */
918 break;
919
920 case MODE_INTER_PRIOR_LAST:
921 /* all 6 fragments use the motion vector prior to the
922 * last motion vector */
923 motion_x[0] = prior_last_motion_x;
924 motion_y[0] = prior_last_motion_y;
925 for (k = 1; k < 6; k++) {
926 motion_x[k] = motion_x[0];
927 motion_y[k] = motion_y[0];
928 }
d86053a4 929
1ae4518d
DC
930 /* vector maintenance */
931 prior_last_motion_x = last_motion_x;
932 prior_last_motion_y = last_motion_y;
933 last_motion_x = motion_x[0];
934 last_motion_y = motion_y[0];
935 break;
44ae98dd 936
1ae4518d
DC
937 default:
938 /* covers intra, inter without MV, golden without MV */
939 memset(motion_x, 0, 6 * sizeof(int));
940 memset(motion_y, 0, 6 * sizeof(int));
44ae98dd 941
1ae4518d
DC
942 /* no vector maintenance */
943 break;
944 }
d86053a4 945
1ae4518d
DC
946 /* assign the motion vectors to the correct fragments */
947 for (k = 0; k < 6; k++) {
948 current_fragment =
949 s->macroblock_fragments[current_macroblock * 6 + k];
950 if (current_fragment == -1)
951 continue;
952 if (current_fragment >= s->fragment_count) {
953 av_log(s->avctx, AV_LOG_ERROR, " vp3:unpack_vectors(): bad fragment number (%d >= %d)\n",
954 current_fragment, s->fragment_count);
955 return 1;
d86053a4 956 }
1ae4518d
DC
957 s->all_fragments[current_fragment].motion_x = motion_x[k];
958 s->all_fragments[current_fragment].motion_y = motion_y[k];
d86053a4
MM
959 }
960 }
1ae4518d 961 }
892fc83e
MM
962
963 return 0;
d86053a4
MM
964}
965
115329f1 966/*
d86053a4
MM
967 * This function is called by unpack_dct_coeffs() to extract the VLCs from
968 * the bitstream. The VLCs encode tokens which are used to unpack DCT
969 * data. This function unpacks all the VLCs for either the Y plane or both
970 * C planes, and is called for DC coefficients or different AC coefficient
971 * levels (since different coefficient types require different VLC tables.
972 *
973 * This function returns a residual eob run. E.g, if a particular token gave
974 * instructions to EOB the next 5 fragments and there were only 2 fragments
975 * left in the current fragment range, 3 would be returned so that it could
976 * be passed into the next call to this same function.
977 */
978static int unpack_vlcs(Vp3DecodeContext *s, GetBitContext *gb,
979 VLC *table, int coeff_index,
980 int first_fragment, int last_fragment,
981 int eob_run)
982{
983 int i;
984 int token;
d3076955
MM
985 int zero_run = 0;
986 DCTELEM coeff = 0;
d86053a4 987 Vp3Fragment *fragment;
36af0c95 988 uint8_t *perm= s->scantable.permutated;
d3076955 989 int bits_to_get;
d86053a4 990
22493ab9 991 if ((first_fragment >= s->fragment_count) ||
74c0ac12
MM
992 (last_fragment >= s->fragment_count)) {
993
9b879566 994 av_log(s->avctx, AV_LOG_ERROR, " vp3:unpack_vlcs(): bad fragment number (%d -> %d ?)\n",
74c0ac12 995 first_fragment, last_fragment);
22493ab9 996 return 0;
74c0ac12
MM
997 }
998
04331882 999 for (i = first_fragment; i <= last_fragment; i++) {
36e16253 1000 int fragment_num = s->coded_fragment_list[i];
d86053a4 1001
36e16253 1002 if (s->coeff_counts[fragment_num] > coeff_index)
d86053a4 1003 continue;
36e16253 1004 fragment = &s->all_fragments[fragment_num];
d86053a4
MM
1005
1006 if (!eob_run) {
1007 /* decode a VLC into a token */
1008 token = get_vlc2(gb, table->table, 5, 3);
d86053a4 1009 /* use the token to get a zero run, a coefficient, and an eob run */
d3076955
MM
1010 if (token <= 6) {
1011 eob_run = eob_run_base[token];
1012 if (eob_run_get_bits[token])
1013 eob_run += get_bits(gb, eob_run_get_bits[token]);
1014 coeff = zero_run = 0;
1015 } else {
1016 bits_to_get = coeff_get_bits[token];
1017 if (!bits_to_get)
1018 coeff = coeff_tables[token][0];
1019 else
1020 coeff = coeff_tables[token][get_bits(gb, bits_to_get)];
1021
1022 zero_run = zero_run_base[token];
1023 if (zero_run_get_bits[token])
1024 zero_run += get_bits(gb, zero_run_get_bits[token]);
1025 }
d86053a4
MM
1026 }
1027
1028 if (!eob_run) {
36e16253
RD
1029 s->coeff_counts[fragment_num] += zero_run;
1030 if (s->coeff_counts[fragment_num] < 64){
7beddb12 1031 fragment->next_coeff->coeff= coeff;
36e16253 1032 fragment->next_coeff->index= perm[s->coeff_counts[fragment_num]++]; //FIXME perm here already?
7beddb12
MN
1033 fragment->next_coeff->next= s->next_coeff;
1034 s->next_coeff->next=NULL;
1035 fragment->next_coeff= s->next_coeff++;
1036 }
d86053a4 1037 } else {
36e16253 1038 s->coeff_counts[fragment_num] |= 128;
d86053a4
MM
1039 eob_run--;
1040 }
1041 }
1042
1043 return eob_run;
1044}
1045
1046/*
1047 * This function unpacks all of the DCT coefficient data from the
1048 * bitstream.
1049 */
892fc83e 1050static int unpack_dct_coeffs(Vp3DecodeContext *s, GetBitContext *gb)
d86053a4
MM
1051{
1052 int i;
1053 int dc_y_table;
1054 int dc_c_table;
1055 int ac_y_table;
1056 int ac_c_table;
1057 int residual_eob_run = 0;
1058
f4433de9 1059 /* fetch the DC table indexes */
d86053a4
MM
1060 dc_y_table = get_bits(gb, 4);
1061 dc_c_table = get_bits(gb, 4);
1062
1063 /* unpack the Y plane DC coefficients */
115329f1 1064 residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_y_table], 0,
04331882 1065 s->first_coded_y_fragment, s->last_coded_y_fragment, residual_eob_run);
d86053a4
MM
1066
1067 /* unpack the C plane DC coefficients */
d86053a4 1068 residual_eob_run = unpack_vlcs(s, gb, &s->dc_vlc[dc_c_table], 0,
04331882 1069 s->first_coded_c_fragment, s->last_coded_c_fragment, residual_eob_run);
d86053a4 1070
f4433de9 1071 /* fetch the AC table indexes */
d86053a4
MM
1072 ac_y_table = get_bits(gb, 4);
1073 ac_c_table = get_bits(gb, 4);
1074
a466e345 1075 /* unpack the group 1 AC coefficients (coeffs 1-5) */
d86053a4 1076 for (i = 1; i <= 5; i++) {
115329f1 1077 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_1[ac_y_table], i,
04331882 1078 s->first_coded_y_fragment, s->last_coded_y_fragment, residual_eob_run);
d86053a4 1079
115329f1 1080 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_1[ac_c_table], i,
04331882 1081 s->first_coded_c_fragment, s->last_coded_c_fragment, residual_eob_run);
d86053a4
MM
1082 }
1083
a466e345 1084 /* unpack the group 2 AC coefficients (coeffs 6-14) */
d86053a4 1085 for (i = 6; i <= 14; i++) {
115329f1 1086 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_2[ac_y_table], i,
04331882 1087 s->first_coded_y_fragment, s->last_coded_y_fragment, residual_eob_run);
d86053a4 1088
115329f1 1089 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_2[ac_c_table], i,
04331882 1090 s->first_coded_c_fragment, s->last_coded_c_fragment, residual_eob_run);
d86053a4
MM
1091 }
1092
a466e345 1093 /* unpack the group 3 AC coefficients (coeffs 15-27) */
d86053a4 1094 for (i = 15; i <= 27; i++) {
115329f1 1095 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_3[ac_y_table], i,
04331882 1096 s->first_coded_y_fragment, s->last_coded_y_fragment, residual_eob_run);
d86053a4 1097
115329f1 1098 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_3[ac_c_table], i,
04331882 1099 s->first_coded_c_fragment, s->last_coded_c_fragment, residual_eob_run);
d86053a4
MM
1100 }
1101
a466e345 1102 /* unpack the group 4 AC coefficients (coeffs 28-63) */
d86053a4 1103 for (i = 28; i <= 63; i++) {
115329f1 1104 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_4[ac_y_table], i,
04331882 1105 s->first_coded_y_fragment, s->last_coded_y_fragment, residual_eob_run);
d86053a4 1106
115329f1 1107 residual_eob_run = unpack_vlcs(s, gb, &s->ac_vlc_4[ac_c_table], i,
04331882 1108 s->first_coded_c_fragment, s->last_coded_c_fragment, residual_eob_run);
d86053a4 1109 }
892fc83e
MM
1110
1111 return 0;
d86053a4
MM
1112}
1113
1114/*
1115 * This function reverses the DC prediction for each coded fragment in
115329f1 1116 * the frame. Much of this function is adapted directly from the original
d86053a4
MM
1117 * VP3 source code.
1118 */
1119#define COMPATIBLE_FRAME(x) \
1120 (compatible_frame[s->all_fragments[x].coding_method] == current_frame_type)
1121#define FRAME_CODED(x) (s->all_fragments[x].coding_method != MODE_COPY)
7beddb12 1122#define DC_COEFF(u) (s->coeffs[u].index ? 0 : s->coeffs[u].coeff) //FIXME do somethin to simplify this
d86053a4
MM
1123
1124static void reverse_dc_prediction(Vp3DecodeContext *s,
1125 int first_fragment,
1126 int fragment_width,
115329f1 1127 int fragment_height)
d86053a4
MM
1128{
1129
1130#define PUL 8
1131#define PU 4
1132#define PUR 2
1133#define PL 1
1134
1135 int x, y;
1136 int i = first_fragment;
1137
59ef342b 1138 int predicted_dc;
d86053a4 1139
d86053a4
MM
1140 /* DC values for the left, up-left, up, and up-right fragments */
1141 int vl, vul, vu, vur;
1142
f4433de9 1143 /* indexes for the left, up-left, up, and up-right fragments */
d86053a4
MM
1144 int l, ul, u, ur;
1145
115329f1 1146 /*
d86053a4
MM
1147 * The 6 fields mean:
1148 * 0: up-left multiplier
1149 * 1: up multiplier
1150 * 2: up-right multiplier
1151 * 3: left multiplier
d86053a4 1152 */
006ff1ca
MN
1153 int predictor_transform[16][4] = {
1154 { 0, 0, 0, 0},
1155 { 0, 0, 0,128}, // PL
1156 { 0, 0,128, 0}, // PUR
1157 { 0, 0, 53, 75}, // PUR|PL
1158 { 0,128, 0, 0}, // PU
1159 { 0, 64, 0, 64}, // PU|PL
1160 { 0,128, 0, 0}, // PU|PUR
1161 { 0, 0, 53, 75}, // PU|PUR|PL
1162 {128, 0, 0, 0}, // PUL
1163 { 0, 0, 0,128}, // PUL|PL
1164 { 64, 0, 64, 0}, // PUL|PUR
1165 { 0, 0, 53, 75}, // PUL|PUR|PL
1166 { 0,128, 0, 0}, // PUL|PU
1167 {-104,116, 0,116}, // PUL|PU|PL
1168 { 24, 80, 24, 0}, // PUL|PU|PUR
1169 {-104,116, 0,116} // PUL|PU|PUR|PL
d86053a4
MM
1170 };
1171
1172 /* This table shows which types of blocks can use other blocks for
1173 * prediction. For example, INTRA is the only mode in this table to
1174 * have a frame number of 0. That means INTRA blocks can only predict
115329f1 1175 * from other INTRA blocks. There are 2 golden frame coding types;
d86053a4
MM
1176 * blocks encoding in these modes can only predict from other blocks
1177 * that were encoded with these 1 of these 2 modes. */
1178 unsigned char compatible_frame[8] = {
1179 1, /* MODE_INTER_NO_MV */
1180 0, /* MODE_INTRA */
1181 1, /* MODE_INTER_PLUS_MV */
1182 1, /* MODE_INTER_LAST_MV */
1183 1, /* MODE_INTER_PRIOR_MV */
1184 2, /* MODE_USING_GOLDEN */
1185 2, /* MODE_GOLDEN_MV */
1186 1 /* MODE_INTER_FOUR_MV */
1187 };
1188 int current_frame_type;
1189
1190 /* there is a last DC predictor for each of the 3 frame types */
1191 short last_dc[3];
1192
1193 int transform = 0;
1194
d86053a4
MM
1195 vul = vu = vur = vl = 0;
1196 last_dc[0] = last_dc[1] = last_dc[2] = 0;
1197
1198 /* for each fragment row... */
1199 for (y = 0; y < fragment_height; y++) {
1200
1201 /* for each fragment in a row... */
1202 for (x = 0; x < fragment_width; x++, i++) {
1203
1204 /* reverse prediction if this block was coded */
1205 if (s->all_fragments[i].coding_method != MODE_COPY) {
1206
115329f1 1207 current_frame_type =
d86053a4 1208 compatible_frame[s->all_fragments[i].coding_method];
d86053a4 1209
f72f8a77
MN
1210 transform= 0;
1211 if(x){
1212 l= i-1;
7beddb12 1213 vl = DC_COEFF(l);
006ff1ca
MN
1214 if(FRAME_CODED(l) && COMPATIBLE_FRAME(l))
1215 transform |= PL;
f72f8a77
MN
1216 }
1217 if(y){
1218 u= i-fragment_width;
7beddb12 1219 vu = DC_COEFF(u);
006ff1ca
MN
1220 if(FRAME_CODED(u) && COMPATIBLE_FRAME(u))
1221 transform |= PU;
f72f8a77
MN
1222 if(x){
1223 ul= i-fragment_width-1;
1224 vul = DC_COEFF(ul);
006ff1ca
MN
1225 if(FRAME_CODED(ul) && COMPATIBLE_FRAME(ul))
1226 transform |= PUL;
f72f8a77
MN
1227 }
1228 if(x + 1 < fragment_width){
1229 ur= i-fragment_width+1;
1230 vur = DC_COEFF(ur);
006ff1ca
MN
1231 if(FRAME_CODED(ur) && COMPATIBLE_FRAME(ur))
1232 transform |= PUR;
f72f8a77 1233 }
d86053a4
MM
1234 }
1235
d86053a4
MM
1236 if (transform == 0) {
1237
1238 /* if there were no fragments to predict from, use last
1239 * DC saved */
7beddb12 1240 predicted_dc = last_dc[current_frame_type];
d86053a4
MM
1241 } else {
1242
1243 /* apply the appropriate predictor transform */
1244 predicted_dc =
1245 (predictor_transform[transform][0] * vul) +
1246 (predictor_transform[transform][1] * vu) +
1247 (predictor_transform[transform][2] * vur) +
1248 (predictor_transform[transform][3] * vl);
1249
684d9e36 1250 predicted_dc /= 128;
d86053a4
MM
1251
1252 /* check for outranging on the [ul u l] and
1253 * [ul u ur l] predictors */
1254 if ((transform == 13) || (transform == 15)) {
c26abfa5 1255 if (FFABS(predicted_dc - vu) > 128)
d86053a4 1256 predicted_dc = vu;
c26abfa5 1257 else if (FFABS(predicted_dc - vl) > 128)
d86053a4 1258 predicted_dc = vl;
c26abfa5 1259 else if (FFABS(predicted_dc - vul) > 128)
d86053a4
MM
1260 predicted_dc = vul;
1261 }
d86053a4
MM
1262 }
1263
7beddb12
MN
1264 /* at long last, apply the predictor */
1265 if(s->coeffs[i].index){
1266 *s->next_coeff= s->coeffs[i];
1267 s->coeffs[i].index=0;
1268 s->coeffs[i].coeff=0;
1269 s->coeffs[i].next= s->next_coeff++;
1270 }
1271 s->coeffs[i].coeff += predicted_dc;
d86053a4 1272 /* save the DC */
7beddb12 1273 last_dc[current_frame_type] = DC_COEFF(i);
36e16253
RD
1274 if(DC_COEFF(i) && !(s->coeff_counts[i]&127)){
1275 s->coeff_counts[i]= 129;
7beddb12
MN
1276// s->all_fragments[i].next_coeff= s->next_coeff;
1277 s->coeffs[i].next= s->next_coeff;
1278 (s->next_coeff++)->next=NULL;
1279 }
d86053a4
MM
1280 }
1281 }
1282 }
1283}
1284
1285/*
dc4b78d9
MM
1286 * Perform the final rendering for a particular slice of data.
1287 * The slice number ranges from 0..(macroblock_height - 1).
1288 */
1289static void render_slice(Vp3DecodeContext *s, int slice)
1290{
1abbf64e 1291 int x;
dc4b78d9 1292 int16_t *dequantizer;
68b51e58 1293 DECLARE_ALIGNED_16(DCTELEM, block[64]);
dc4b78d9 1294 int motion_x = 0xdeadbeef, motion_y = 0xdeadbeef;
dc4b78d9
MM
1295 int motion_halfpel_index;
1296 uint8_t *motion_source;
1297 int plane;
dc4b78d9
MM
1298 int current_macroblock_entry = slice * s->macroblock_width * 6;
1299
1300 if (slice >= s->macroblock_height)
1301 return;
1302
1303 for (plane = 0; plane < 3; plane++) {
1abbf64e
MN
1304 uint8_t *output_plane = s->current_frame.data [plane];
1305 uint8_t * last_plane = s-> last_frame.data [plane];
1306 uint8_t *golden_plane = s-> golden_frame.data [plane];
1307 int stride = s->current_frame.linesize[plane];
1308 int plane_width = s->width >> !!plane;
1309 int plane_height = s->height >> !!plane;
1310 int y = slice * FRAGMENT_PIXELS << !plane ;
1311 int slice_height = y + (FRAGMENT_PIXELS << !plane);
1312 int i = s->macroblock_fragments[current_macroblock_entry + plane + 3*!!plane];
1313
1314 if (!s->flipped_image) stride = -stride;
dc4b78d9 1315
115329f1 1316
c26abfa5 1317 if(FFABS(stride) > 2048)
dc4b78d9
MM
1318 return; //various tables are fixed size
1319
1320 /* for each fragment row in the slice (both of them)... */
1321 for (; y < slice_height; y += 8) {
1322
1323 /* for each fragment in a row... */
1324 for (x = 0; x < plane_width; x += 8, i++) {
1325
1326 if ((i < 0) || (i >= s->fragment_count)) {
1327 av_log(s->avctx, AV_LOG_ERROR, " vp3:render_slice(): bad fragment number (%d)\n", i);
1328 return;
1329 }
1330
1331 /* transform if this block was coded */
1332 if ((s->all_fragments[i].coding_method != MODE_COPY) &&
1333 !((s->avctx->flags & CODEC_FLAG_GRAY) && plane)) {
1334
1335 if ((s->all_fragments[i].coding_method == MODE_USING_GOLDEN) ||
1336 (s->all_fragments[i].coding_method == MODE_GOLDEN_MV))
1337 motion_source= golden_plane;
115329f1 1338 else
dc4b78d9
MM
1339 motion_source= last_plane;
1340
1341 motion_source += s->all_fragments[i].first_pixel;
1342 motion_halfpel_index = 0;
1343
1344 /* sort out the motion vector if this fragment is coded
1345 * using a motion vector method */
1346 if ((s->all_fragments[i].coding_method > MODE_INTRA) &&
1347 (s->all_fragments[i].coding_method != MODE_USING_GOLDEN)) {
1348 int src_x, src_y;
1349 motion_x = s->all_fragments[i].motion_x;
1350 motion_y = s->all_fragments[i].motion_y;
1351 if(plane){
1352 motion_x= (motion_x>>1) | (motion_x&1);
1353 motion_y= (motion_y>>1) | (motion_y&1);
1354 }
1355
1356 src_x= (motion_x>>1) + x;
1357 src_y= (motion_y>>1) + y;
1358 if ((motion_x == 127) || (motion_y == 127))
1359 av_log(s->avctx, AV_LOG_ERROR, " help! got invalid motion vector! (%X, %X)\n", motion_x, motion_y);
1360
1361 motion_halfpel_index = motion_x & 0x01;
1362 motion_source += (motion_x >> 1);
1363
1364 motion_halfpel_index |= (motion_y & 0x01) << 1;
1365 motion_source += ((motion_y >> 1) * stride);
1366
1367 if(src_x<0 || src_y<0 || src_x + 9 >= plane_width || src_y + 9 >= plane_height){
1368 uint8_t *temp= s->edge_emu_buffer;
1369 if(stride<0) temp -= 9*stride;
1370 else temp += 9*stride;
1371
1372 ff_emulated_edge_mc(temp, motion_source, stride, 9, 9, src_x, src_y, plane_width, plane_height);
1373 motion_source= temp;
1374 }
1375 }
115329f1 1376
dc4b78d9
MM
1377
1378 /* first, take care of copying a block from either the
1379 * previous or the golden frame */
1380 if (s->all_fragments[i].coding_method != MODE_INTRA) {
115329f1
DB
1381 /* Note, it is possible to implement all MC cases with
1382 put_no_rnd_pixels_l2 which would look more like the
1383 VP3 source but this would be slower as
dc4b78d9
MM
1384 put_no_rnd_pixels_tab is better optimzed */
1385 if(motion_halfpel_index != 3){
1386 s->dsp.put_no_rnd_pixels_tab[1][motion_halfpel_index](
1387 output_plane + s->all_fragments[i].first_pixel,
1388 motion_source, stride, 8);
1389 }else{
1390 int d= (motion_x ^ motion_y)>>31; // d is 0 if motion_x and _y have the same sign, else -1
1391 s->dsp.put_no_rnd_pixels_l2[1](
1392 output_plane + s->all_fragments[i].first_pixel,
115329f1
DB
1393 motion_source - d,
1394 motion_source + stride + 1 + d,
dc4b78d9
MM
1395 stride, 8);
1396 }
187c9be7 1397 dequantizer = s->qmat[1][plane];
dc4b78d9 1398 }else{
187c9be7 1399 dequantizer = s->qmat[0][plane];
dc4b78d9
MM
1400 }
1401
1402 /* dequantize the DCT coefficients */
dc4b78d9
MM
1403 if(s->avctx->idct_algo==FF_IDCT_VP3){
1404 Coeff *coeff= s->coeffs + i;
5fecfb7d 1405 s->dsp.clear_block(block);
dc4b78d9
MM
1406 while(coeff->next){
1407 block[coeff->index]= coeff->coeff * dequantizer[coeff->index];
1408 coeff= coeff->next;
1409 }
1410 }else{
1411 Coeff *coeff= s->coeffs + i;
5fecfb7d 1412 s->dsp.clear_block(block);
dc4b78d9
MM
1413 while(coeff->next){
1414 block[coeff->index]= (coeff->coeff * dequantizer[coeff->index] + 2)>>2;
1415 coeff= coeff->next;
1416 }
1417 }
1418
1419 /* invert DCT and place (or add) in final output */
115329f1 1420
dc4b78d9
MM
1421 if (s->all_fragments[i].coding_method == MODE_INTRA) {
1422 if(s->avctx->idct_algo!=FF_IDCT_VP3)
1423 block[0] += 128<<3;
1424 s->dsp.idct_put(
1425 output_plane + s->all_fragments[i].first_pixel,
1426 stride,
1427 block);
1428 } else {
1429 s->dsp.idct_add(
1430 output_plane + s->all_fragments[i].first_pixel,
1431 stride,
1432 block);
1433 }
dc4b78d9
MM
1434 } else {
1435
1436 /* copy directly from the previous frame */
1437 s->dsp.put_pixels_tab[1][0](
1438 output_plane + s->all_fragments[i].first_pixel,
1439 last_plane + s->all_fragments[i].first_pixel,
1440 stride, 8);
1441
1442 }
72053728 1443#if 0
2935001c
MM
1444 /* perform the left edge filter if:
1445 * - the fragment is not on the left column
1446 * - the fragment is coded in this frame
1447 * - the fragment is not coded in this frame but the left
1448 * fragment is coded in this frame (this is done instead
1449 * of a right edge filter when rendering the left fragment
1450 * since this fragment is not available yet) */
f44b08a5 1451 if ((x > 0) &&
2935001c
MM
1452 ((s->all_fragments[i].coding_method != MODE_COPY) ||
1453 ((s->all_fragments[i].coding_method == MODE_COPY) &&
1454 (s->all_fragments[i - 1].coding_method != MODE_COPY)) )) {
f44b08a5 1455 horizontal_filter(
2935001c 1456 output_plane + s->all_fragments[i].first_pixel + 7*stride,
1af5f60f 1457 -stride, s->bounding_values_array + 127);
f44b08a5
MM
1458 }
1459
2935001c
MM
1460 /* perform the top edge filter if:
1461 * - the fragment is not on the top row
1462 * - the fragment is coded in this frame
1463 * - the fragment is not coded in this frame but the above
1464 * fragment is coded in this frame (this is done instead
1465 * of a bottom edge filter when rendering the above
1466 * fragment since this fragment is not available yet) */
f44b08a5 1467 if ((y > 0) &&
2935001c
MM
1468 ((s->all_fragments[i].coding_method != MODE_COPY) ||
1469 ((s->all_fragments[i].coding_method == MODE_COPY) &&
1470 (s->all_fragments[i - fragment_width].coding_method != MODE_COPY)) )) {
f44b08a5 1471 vertical_filter(
2935001c 1472 output_plane + s->all_fragments[i].first_pixel - stride,
1af5f60f 1473 -stride, s->bounding_values_array + 127);
f44b08a5 1474 }
72053728 1475#endif
dc4b78d9
MM
1476 }
1477 }
1478 }
1479
dc4b78d9
MM
1480 /* this looks like a good place for slice dispatch... */
1481 /* algorithm:
dc4b78d9 1482 * if (slice == s->macroblock_height - 1)
f44b08a5
MM
1483 * dispatch (both last slice & 2nd-to-last slice);
1484 * else if (slice > 0)
1485 * dispatch (slice - 1);
dc4b78d9
MM
1486 */
1487
1488 emms_c();
1489}
1490
a54ea19a
MM
1491static void apply_loop_filter(Vp3DecodeContext *s)
1492{
1abbf64e
MN
1493 int plane;
1494 int x, y;
f44b08a5 1495 int *bounding_values= s->bounding_values_array+127;
d5e18835 1496
f44b08a5 1497#if 0
d5e18835 1498 int bounding_values_array[256];
a54ea19a
MM
1499 int filter_limit;
1500
1501 /* find the right loop limit value */
1502 for (x = 63; x >= 0; x--) {
1503 if (vp31_ac_scale_factor[x] >= s->quality_index)
1504 break;
1505 }
d5e18835 1506 filter_limit = vp31_filter_limit_values[s->quality_index];
a54ea19a
MM
1507
1508 /* set up the bounding values */
d5e18835 1509 memset(bounding_values_array, 0, 256 * sizeof(int));
a54ea19a
MM
1510 for (x = 0; x < filter_limit; x++) {
1511 bounding_values[-x - filter_limit] = -filter_limit + x;
1512 bounding_values[-x] = -x;
1513 bounding_values[x] = x;
1514 bounding_values[x + filter_limit] = filter_limit - x;
1515 }
f44b08a5 1516#endif
a54ea19a
MM
1517
1518 for (plane = 0; plane < 3; plane++) {
1abbf64e
MN
1519 int width = s->fragment_width >> !!plane;
1520 int height = s->fragment_height >> !!plane;
1521 int fragment = s->fragment_start [plane];
1522 int stride = s->current_frame.linesize[plane];
1523 uint8_t *plane_data = s->current_frame.data [plane];
1af5f60f 1524 if (!s->flipped_image) stride = -stride;
a54ea19a
MM
1525
1526 for (y = 0; y < height; y++) {
d86053a4 1527
a54ea19a 1528 for (x = 0; x < width; x++) {
a54ea19a
MM
1529 /* do not perform left edge filter for left columns frags */
1530 if ((x > 0) &&
1531 (s->all_fragments[fragment].coding_method != MODE_COPY)) {
9971331d 1532 s->dsp.vp3_h_loop_filter(
1af5f60f 1533 plane_data + s->all_fragments[fragment].first_pixel,
a54ea19a
MM
1534 stride, bounding_values);
1535 }
1536
1537 /* do not perform top edge filter for top row fragments */
1538 if ((y > 0) &&
1539 (s->all_fragments[fragment].coding_method != MODE_COPY)) {
9971331d 1540 s->dsp.vp3_v_loop_filter(
1af5f60f 1541 plane_data + s->all_fragments[fragment].first_pixel,
a54ea19a
MM
1542 stride, bounding_values);
1543 }
1544
1545 /* do not perform right edge filter for right column
1546 * fragments or if right fragment neighbor is also coded
1547 * in this frame (it will be filtered in next iteration) */
1548 if ((x < width - 1) &&
1549 (s->all_fragments[fragment].coding_method != MODE_COPY) &&
1550 (s->all_fragments[fragment + 1].coding_method == MODE_COPY)) {
9971331d 1551 s->dsp.vp3_h_loop_filter(
1af5f60f 1552 plane_data + s->all_fragments[fragment + 1].first_pixel,
a54ea19a
MM
1553 stride, bounding_values);
1554 }
1555
1556 /* do not perform bottom edge filter for bottom row
1557 * fragments or if bottom fragment neighbor is also coded
1558 * in this frame (it will be filtered in the next row) */
1559 if ((y < height - 1) &&
1560 (s->all_fragments[fragment].coding_method != MODE_COPY) &&
1561 (s->all_fragments[fragment + width].coding_method == MODE_COPY)) {
9971331d 1562 s->dsp.vp3_v_loop_filter(
1af5f60f 1563 plane_data + s->all_fragments[fragment + width].first_pixel,
a54ea19a
MM
1564 stride, bounding_values);
1565 }
1566
1567 fragment++;
1568 }
1569 }
1570 }
d86053a4
MM
1571}
1572
115329f1 1573/*
d86053a4
MM
1574 * This function computes the first pixel addresses for each fragment.
1575 * This function needs to be invoked after the first frame is allocated
1576 * so that it has access to the plane strides.
1577 */
115329f1 1578static void vp3_calculate_pixel_addresses(Vp3DecodeContext *s)
d86053a4 1579{
fc961819
DC
1580#define Y_INITIAL(chroma_shift) s->flipped_image ? 1 : s->fragment_height >> chroma_shift
1581#define Y_FINISHED(chroma_shift) s->flipped_image ? y <= s->fragment_height >> chroma_shift : y > 0
d86053a4
MM
1582
1583 int i, x, y;
fc961819 1584 const int y_inc = s->flipped_image ? 1 : -1;
d86053a4
MM
1585
1586 /* figure out the first pixel addresses for each of the fragments */
1587 /* Y plane */
1588 i = 0;
fc961819 1589 for (y = Y_INITIAL(0); Y_FINISHED(0); y += y_inc) {
d86053a4 1590 for (x = 0; x < s->fragment_width; x++) {
115329f1 1591 s->all_fragments[i++].first_pixel =
d86053a4
MM
1592 s->golden_frame.linesize[0] * y * FRAGMENT_PIXELS -
1593 s->golden_frame.linesize[0] +
1594 x * FRAGMENT_PIXELS;
d86053a4
MM
1595 }
1596 }
1597
1598 /* U plane */
1abbf64e 1599 i = s->fragment_start[1];
fc961819 1600 for (y = Y_INITIAL(1); Y_FINISHED(1); y += y_inc) {
d86053a4 1601 for (x = 0; x < s->fragment_width / 2; x++) {
115329f1 1602 s->all_fragments[i++].first_pixel =
d86053a4
MM
1603 s->golden_frame.linesize[1] * y * FRAGMENT_PIXELS -
1604 s->golden_frame.linesize[1] +
1605 x * FRAGMENT_PIXELS;
d86053a4
MM
1606 }
1607 }
1608
1609 /* V plane */
1abbf64e 1610 i = s->fragment_start[2];
fc961819 1611 for (y = Y_INITIAL(1); Y_FINISHED(1); y += y_inc) {
9a7ad925 1612 for (x = 0; x < s->fragment_width / 2; x++) {
115329f1 1613 s->all_fragments[i++].first_pixel =
9a7ad925
AB
1614 s->golden_frame.linesize[2] * y * FRAGMENT_PIXELS -
1615 s->golden_frame.linesize[2] +
1616 x * FRAGMENT_PIXELS;
9a7ad925
AB
1617 }
1618 }
1619}
1620
d86053a4
MM
1621/*
1622 * This is the ffmpeg/libavcodec API init function.
1623 */
98a6fff9 1624static av_cold int vp3_decode_init(AVCodecContext *avctx)
d86053a4
MM
1625{
1626 Vp3DecodeContext *s = avctx->priv_data;
ae1dd8e1 1627 int i, inter, plane;
892fc83e
MM
1628 int c_width;
1629 int c_height;
1630 int y_superblock_count;
1631 int c_superblock_count;
d86053a4 1632
3c3f113e 1633 if (avctx->codec_tag == MKTAG('V','P','3','0'))
bb270c08 1634 s->version = 0;
3c3f113e 1635 else
bb270c08 1636 s->version = 1;
3c3f113e 1637
d86053a4 1638 s->avctx = avctx;
ef516f73
DC
1639 s->width = FFALIGN(avctx->width, 16);
1640 s->height = FFALIGN(avctx->height, 16);
d86053a4 1641 avctx->pix_fmt = PIX_FMT_YUV420P;
580a7465 1642 avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
8b6103da
MN
1643 if(avctx->idct_algo==FF_IDCT_AUTO)
1644 avctx->idct_algo=FF_IDCT_VP3;
d86053a4 1645 dsputil_init(&s->dsp, avctx);
115329f1 1646
36af0c95 1647 ff_init_scantable(s->dsp.idct_permutation, &s->scantable, ff_zigzag_direct);
d86053a4
MM
1648
1649 /* initialize to an impossible value which will force a recalculation
1650 * in the first frame decode */
1651 s->quality_index = -1;
1652
892fc83e
MM
1653 s->y_superblock_width = (s->width + 31) / 32;
1654 s->y_superblock_height = (s->height + 31) / 32;
1655 y_superblock_count = s->y_superblock_width * s->y_superblock_height;
1656
1657 /* work out the dimensions for the C planes */
1658 c_width = s->width / 2;
1659 c_height = s->height / 2;
1660 s->c_superblock_width = (c_width + 31) / 32;
1661 s->c_superblock_height = (c_height + 31) / 32;
1662 c_superblock_count = s->c_superblock_width * s->c_superblock_height;
1663
1664 s->superblock_count = y_superblock_count + (c_superblock_count * 2);
1665 s->u_superblock_start = y_superblock_count;
1666 s->v_superblock_start = s->u_superblock_start + c_superblock_count;
d86053a4
MM
1667 s->superblock_coding = av_malloc(s->superblock_count);
1668
1669 s->macroblock_width = (s->width + 15) / 16;
1670 s->macroblock_height = (s->height + 15) / 16;
1671 s->macroblock_count = s->macroblock_width * s->macroblock_height;
1672
1673 s->fragment_width = s->width / FRAGMENT_PIXELS;
1674 s->fragment_height = s->height / FRAGMENT_PIXELS;
1675
1676 /* fragment count covers all 8x8 blocks for all 3 planes */
1677 s->fragment_count = s->fragment_width * s->fragment_height * 3 / 2;
1abbf64e
MN
1678 s->fragment_start[1] = s->fragment_width * s->fragment_height;
1679 s->fragment_start[2] = s->fragment_width * s->fragment_height * 5 / 4;
d86053a4 1680
d86053a4 1681 s->all_fragments = av_malloc(s->fragment_count * sizeof(Vp3Fragment));
36e16253 1682 s->coeff_counts = av_malloc(s->fragment_count * sizeof(*s->coeff_counts));
7beddb12 1683 s->coeffs = av_malloc(s->fragment_count * sizeof(Coeff) * 65);
d86053a4 1684 s->coded_fragment_list = av_malloc(s->fragment_count * sizeof(int));
5e534865 1685 s->pixel_addresses_initialized = 0;
d86053a4 1686
f44ee2c3
AB
1687 if (!s->theora_tables)
1688 {
2287c100 1689 for (i = 0; i < 64; i++) {
bb270c08 1690 s->coded_dc_scale_factor[i] = vp31_dc_scale_factor[i];
bb270c08 1691 s->coded_ac_scale_factor[i] = vp31_ac_scale_factor[i];
ae1dd8e1 1692 s->base_matrix[0][i] = vp31_intra_y_dequant[i];
ae1dd8e1 1693 s->base_matrix[1][i] = vp31_intra_c_dequant[i];
ae1dd8e1 1694 s->base_matrix[2][i] = vp31_inter_dequant[i];
bb270c08 1695 s->filter_limit_values[i] = vp31_filter_limit_values[i];
2287c100 1696 }
f44ee2c3 1697
ae1dd8e1
MN
1698 for(inter=0; inter<2; inter++){
1699 for(plane=0; plane<3; plane++){
1700 s->qr_count[inter][plane]= 1;
1701 s->qr_size [inter][plane][0]= 63;
1702 s->qr_base [inter][plane][0]=
1703 s->qr_base [inter][plane][1]= 2*inter + (!!plane)*!inter;
1704 }
1705 }
1706
39922395
MM
1707 /* init VLC tables */
1708 for (i = 0; i < 16; i++) {
1709
1710 /* DC histograms */
1711 init_vlc(&s->dc_vlc[i], 5, 32,
1712 &dc_bias[i][0][1], 4, 2,
1713 &dc_bias[i][0][0], 4, 2, 0);
1714
1715 /* group 1 AC histograms */
1716 init_vlc(&s->ac_vlc_1[i], 5, 32,
1717 &ac_bias_0[i][0][1], 4, 2,
1718 &ac_bias_0[i][0][0], 4, 2, 0);
1719
1720 /* group 2 AC histograms */
1721 init_vlc(&s->ac_vlc_2[i], 5, 32,
1722 &ac_bias_1[i][0][1], 4, 2,
1723 &ac_bias_1[i][0][0], 4, 2, 0);
1724
1725 /* group 3 AC histograms */
1726 init_vlc(&s->ac_vlc_3[i], 5, 32,
1727 &ac_bias_2[i][0][1], 4, 2,
1728 &ac_bias_2[i][0][0], 4, 2, 0);
1729
1730 /* group 4 AC histograms */
1731 init_vlc(&s->ac_vlc_4[i], 5, 32,
1732 &ac_bias_3[i][0][1], 4, 2,
1733 &ac_bias_3[i][0][0], 4, 2, 0);
1734 }
1735 } else {
1736 for (i = 0; i < 16; i++) {
1737
1738 /* DC histograms */
1739 init_vlc(&s->dc_vlc[i], 5, 32,
1740 &s->huffman_table[i][0][1], 4, 2,
1741 &s->huffman_table[i][0][0], 4, 2, 0);
1742
1743 /* group 1 AC histograms */
1744 init_vlc(&s->ac_vlc_1[i], 5, 32,
1745 &s->huffman_table[i+16][0][1], 4, 2,
1746 &s->huffman_table[i+16][0][0], 4, 2, 0);
1747
1748 /* group 2 AC histograms */
1749 init_vlc(&s->ac_vlc_2[i], 5, 32,
1750 &s->huffman_table[i+16*2][0][1], 4, 2,
1751 &s->huffman_table[i+16*2][0][0], 4, 2, 0);
1752
1753 /* group 3 AC histograms */
1754 init_vlc(&s->ac_vlc_3[i], 5, 32,
1755 &s->huffman_table[i+16*3][0][1], 4, 2,
1756 &s->huffman_table[i+16*3][0][0], 4, 2, 0);
1757
1758 /* group 4 AC histograms */
1759 init_vlc(&s->ac_vlc_4[i], 5, 32,
1760 &s->huffman_table[i+16*4][0][1], 4, 2,
1761 &s->huffman_table[i+16*4][0][0], 4, 2, 0);
1762 }
d86053a4
MM
1763 }
1764
d8278bab
MM
1765 init_vlc(&s->superblock_run_length_vlc, 6, 34,
1766 &superblock_run_length_vlc_table[0][1], 4, 2,
1767 &superblock_run_length_vlc_table[0][0], 4, 2, 0);
1768
dd36b667 1769 init_vlc(&s->fragment_run_length_vlc, 5, 30,
0ad72bdd
MM
1770 &fragment_run_length_vlc_table[0][1], 4, 2,
1771 &fragment_run_length_vlc_table[0][0], 4, 2, 0);
1772
1773 init_vlc(&s->mode_code_vlc, 3, 8,
1774 &mode_code_vlc_table[0][1], 2, 1,
1775 &mode_code_vlc_table[0][0], 2, 1, 0);
1776
1777 init_vlc(&s->motion_vector_vlc, 6, 63,
1778 &motion_vector_vlc_table[0][1], 2, 1,
1779 &motion_vector_vlc_table[0][0], 2, 1, 0);
1780
d86053a4
MM
1781 /* work out the block mapping tables */
1782 s->superblock_fragments = av_malloc(s->superblock_count * 16 * sizeof(int));
1783 s->superblock_macroblocks = av_malloc(s->superblock_count * 4 * sizeof(int));
1784 s->macroblock_fragments = av_malloc(s->macroblock_count * 6 * sizeof(int));
96a7e73b 1785 s->macroblock_coding = av_malloc(s->macroblock_count + 1);
d86053a4
MM
1786 init_block_mapping(s);
1787
44ae98dd
MM
1788 for (i = 0; i < 3; i++) {
1789 s->current_frame.data[i] = NULL;
1790 s->last_frame.data[i] = NULL;
1791 s->golden_frame.data[i] = NULL;
61873c4a
MM
1792 }
1793
d86053a4
MM
1794 return 0;
1795}
1796
1797/*
1798 * This is the ffmpeg/libavcodec API frame decode function.
1799 */
115329f1 1800static int vp3_decode_frame(AVCodecContext *avctx,
d86053a4 1801 void *data, int *data_size,
7a00bbad 1802 AVPacket *avpkt)
d86053a4 1803{
7a00bbad
TB
1804 const uint8_t *buf = avpkt->data;
1805 int buf_size = avpkt->size;
d86053a4
MM
1806 Vp3DecodeContext *s = avctx->priv_data;
1807 GetBitContext gb;
1808 static int counter = 0;
dc4b78d9 1809 int i;
d86053a4 1810
d86053a4 1811 init_get_bits(&gb, buf, buf_size * 8);
115329f1 1812
f44ee2c3
AB
1813 if (s->theora && get_bits1(&gb))
1814 {
bb270c08
DB
1815 av_log(avctx, AV_LOG_ERROR, "Header packet passed to frame decoder, skipping\n");
1816 return -1;
f44ee2c3 1817 }
3c3f113e
AB
1818
1819 s->keyframe = !get_bits1(&gb);
1820 if (!s->theora)
bb270c08 1821 skip_bits(&gb, 1);
3c3f113e 1822 s->last_quality_index = s->quality_index;
efea8528
MN
1823
1824 s->nqis=0;
1825 do{
1826 s->qis[s->nqis++]= get_bits(&gb, 6);
1827 } while(s->theora >= 0x030200 && s->nqis<3 && get_bits1(&gb));
1828
1829 s->quality_index= s->qis[0];
d86053a4 1830
f8830383 1831 if (s->avctx->debug & FF_DEBUG_PICT_INFO)
bb270c08
DB
1832 av_log(s->avctx, AV_LOG_INFO, " VP3 %sframe #%d: Q index = %d\n",
1833 s->keyframe?"key":"", counter, s->quality_index);
d86053a4
MM
1834 counter++;
1835
f44b08a5 1836 if (s->quality_index != s->last_quality_index) {
642d7e84 1837 init_dequantizer(s);
f44b08a5
MM
1838 init_loop_filter(s);
1839 }
642d7e84 1840
068e82ba
DC
1841 if (avctx->skip_frame >= AVDISCARD_NONKEY && !s->keyframe)
1842 return buf_size;
1843
d86053a4 1844 if (s->keyframe) {
bb270c08
DB
1845 if (!s->theora)
1846 {
1847 skip_bits(&gb, 4); /* width code */
1848 skip_bits(&gb, 4); /* height code */
1849 if (s->version)
1850 {
1851 s->version = get_bits(&gb, 5);
1852 if (counter == 1)
1853 av_log(s->avctx, AV_LOG_DEBUG, "VP version: %d\n", s->version);
1854 }
1855 }
1856 if (s->version || s->theora)
1857 {
1858 if (get_bits1(&gb))
1859 av_log(s->avctx, AV_LOG_ERROR, "Warning, unsupported keyframe coding type?!\n");
1860 skip_bits(&gb, 2); /* reserved? */
1861 }
3c3f113e 1862
74c0ac12
MM
1863 if (s->last_frame.data[0] == s->golden_frame.data[0]) {
1864 if (s->golden_frame.data[0])
1865 avctx->release_buffer(avctx, &s->golden_frame);
8e39d4a7 1866 s->last_frame= s->golden_frame; /* ensure that we catch any access to this released frame */
74c0ac12
MM
1867 } else {
1868 if (s->golden_frame.data[0])
1869 avctx->release_buffer(avctx, &s->golden_frame);
1870 if (s->last_frame.data[0])
1871 avctx->release_buffer(avctx, &s->last_frame);
1872 }
d86053a4 1873
8e39d4a7 1874 s->golden_frame.reference = 3;
d86053a4 1875 if(avctx->get_buffer(avctx, &s->golden_frame) < 0) {
9b879566 1876 av_log(s->avctx, AV_LOG_ERROR, "vp3: get_buffer() failed\n");
d86053a4
MM
1877 return -1;
1878 }
1879
d86053a4 1880 /* golden frame is also the current frame */
4501e678 1881 s->current_frame= s->golden_frame;
d86053a4
MM
1882
1883 /* time to figure out pixel addresses? */
5e534865 1884 if (!s->pixel_addresses_initialized)
bb270c08 1885 {
ba31df31 1886 vp3_calculate_pixel_addresses(s);
5e534865 1887 s->pixel_addresses_initialized = 1;
bb270c08 1888 }
d86053a4 1889 } else {
d86053a4 1890 /* allocate a new current frame */
8e39d4a7 1891 s->current_frame.reference = 3;
5e534865 1892 if (!s->pixel_addresses_initialized) {
bc185f72
RD
1893 av_log(s->avctx, AV_LOG_ERROR, "vp3: first frame not a keyframe\n");
1894 return -1;
1895 }
d86053a4 1896 if(avctx->get_buffer(avctx, &s->current_frame) < 0) {
9b879566 1897 av_log(s->avctx, AV_LOG_ERROR, "vp3: get_buffer() failed\n");
d86053a4
MM
1898 return -1;
1899 }
d86053a4
MM
1900 }
1901
b928ec64
MN
1902 s->current_frame.qscale_table= s->qscale_table; //FIXME allocate individual tables per AVFrame
1903 s->current_frame.qstride= 0;
1904
d86053a4
MM
1905 init_frame(s, &gb);
1906
220a6f40
MN
1907 if (unpack_superblocks(s, &gb)){
1908 av_log(s->avctx, AV_LOG_ERROR, "error in unpack_superblocks\n");
1909 return -1;
1910 }
220a6f40
MN
1911 if (unpack_modes(s, &gb)){
1912 av_log(s->avctx, AV_LOG_ERROR, "error in unpack_modes\n");
1913 return -1;
1914 }
220a6f40
MN
1915 if (unpack_vectors(s, &gb)){
1916 av_log(s->avctx, AV_LOG_ERROR, "error in unpack_vectors\n");
1917 return -1;
1918 }
220a6f40
MN
1919 if (unpack_dct_coeffs(s, &gb)){
1920 av_log(s->avctx, AV_LOG_ERROR, "error in unpack_dct_coeffs\n");
892fc83e
MM
1921 return -1;
1922 }
d86053a4
MM
1923
1924 reverse_dc_prediction(s, 0, s->fragment_width, s->fragment_height);
3d32b429 1925 if ((avctx->flags & CODEC_FLAG_GRAY) == 0) {
1abbf64e 1926 reverse_dc_prediction(s, s->fragment_start[1],
3d32b429 1927 s->fragment_width / 2, s->fragment_height / 2);
1abbf64e 1928 reverse_dc_prediction(s, s->fragment_start[2],
3d32b429 1929 s->fragment_width / 2, s->fragment_height / 2);
dc4b78d9 1930 }
dc4b78d9 1931
dc4b78d9
MM
1932 for (i = 0; i < s->macroblock_height; i++)
1933 render_slice(s, i);
d86053a4 1934
72053728 1935 apply_loop_filter(s);
892fc83e 1936
d86053a4
MM
1937 *data_size=sizeof(AVFrame);
1938 *(AVFrame*)data= s->current_frame;
1939
44ae98dd
MM
1940 /* release the last frame, if it is allocated and if it is not the
1941 * golden frame */
1942 if ((s->last_frame.data[0]) &&
1943 (s->last_frame.data[0] != s->golden_frame.data[0]))
1944 avctx->release_buffer(avctx, &s->last_frame);
d86053a4 1945
61873c4a 1946 /* shuffle frames (last = current) */
4501e678 1947 s->last_frame= s->current_frame;
8e39d4a7 1948 s->current_frame.data[0]= NULL; /* ensure that we catch any access to this released frame */
d86053a4
MM
1949
1950 return buf_size;
1951}
1952
1953/*
1954 * This is the ffmpeg/libavcodec API module cleanup function.
1955 */
98a6fff9 1956static av_cold int vp3_decode_end(AVCodecContext *avctx)
d86053a4
MM
1957{
1958 Vp3DecodeContext *s = avctx->priv_data;
6f4e2b5a 1959 int i;
d86053a4 1960
6f4e2b5a 1961 av_free(s->superblock_coding);
d86053a4 1962 av_free(s->all_fragments);
36e16253 1963 av_free(s->coeff_counts);
a2df5a50 1964 av_free(s->coeffs);
d86053a4
MM
1965 av_free(s->coded_fragment_list);
1966 av_free(s->superblock_fragments);
1967 av_free(s->superblock_macroblocks);
1968 av_free(s->macroblock_fragments);
96a7e73b 1969 av_free(s->macroblock_coding);
115329f1 1970
6f4e2b5a
MR
1971 for (i = 0; i < 16; i++) {
1972 free_vlc(&s->dc_vlc[i]);
1973 free_vlc(&s->ac_vlc_1[i]);
1974 free_vlc(&s->ac_vlc_2[i]);
1975 free_vlc(&s->ac_vlc_3[i]);
1976 free_vlc(&s->ac_vlc_4[i]);
1977 }
1978
1979 free_vlc(&s->superblock_run_length_vlc);
1980 free_vlc(&s->fragment_run_length_vlc);
1981 free_vlc(&s->mode_code_vlc);
1982 free_vlc(&s->motion_vector_vlc);
1983
d86053a4 1984 /* release all frames */
8e39d4a7 1985 if (s->golden_frame.data[0] && s->golden_frame.data[0] != s->last_frame.data[0])
892fc83e
MM
1986 avctx->release_buffer(avctx, &s->golden_frame);
1987 if (s->last_frame.data[0])
1988 avctx->release_buffer(avctx, &s->last_frame);
1989 /* no need to release the current_frame since it will always be pointing
1990 * to the same frame as either the golden or last frame */
d86053a4
MM
1991
1992 return 0;
1993}
1994
39922395
MM
1995static int read_huffman_tree(AVCodecContext *avctx, GetBitContext *gb)
1996{
1997 Vp3DecodeContext *s = avctx->priv_data;
1998
5fc32c27 1999 if (get_bits1(gb)) {
39922395
MM
2000 int token;
2001 if (s->entries >= 32) { /* overflow */
2002 av_log(avctx, AV_LOG_ERROR, "huffman tree overflow\n");
2003 return -1;
2004 }
2005 token = get_bits(gb, 5);
2006 //av_log(avctx, AV_LOG_DEBUG, "hti %d hbits %x token %d entry : %d size %d\n", s->hti, s->hbits, token, s->entries, s->huff_code_size);
2007 s->huffman_table[s->hti][token][0] = s->hbits;
2008 s->huffman_table[s->hti][token][1] = s->huff_code_size;
2009 s->entries++;
2010 }
2011 else {
2012 if (s->huff_code_size >= 32) {/* overflow */
2013 av_log(avctx, AV_LOG_ERROR, "huffman tree overflow\n");
2014 return -1;
2015 }
2016 s->huff_code_size++;
2017 s->hbits <<= 1;
00bbe276
AC
2018 if (read_huffman_tree(avctx, gb))
2019 return -1;
39922395 2020 s->hbits |= 1;
00bbe276
AC
2021 if (read_huffman_tree(avctx, gb))
2022 return -1;
39922395
MM
2023 s->hbits >>= 1;
2024 s->huff_code_size--;
2025 }
2026 return 0;
2027}
2028
b250f9c6 2029#if CONFIG_THEORA_DECODER
e278056f 2030static int theora_decode_header(AVCodecContext *avctx, GetBitContext *gb)
f44ee2c3
AB
2031{
2032 Vp3DecodeContext *s = avctx->priv_data;
c0f716b8 2033 int visible_width, visible_height;
9a7ad925 2034
e278056f 2035 s->theora = get_bits_long(gb, 24);
356306ac 2036 av_log(avctx, AV_LOG_DEBUG, "Theora bitstream version %X\n", s->theora);
105c3d25 2037
ba7ee4a4 2038 /* 3.2.0 aka alpha3 has the same frame orientation as original vp3 */
9a7ad925 2039 /* but previous versions have the image flipped relative to vp3 */
ba7ee4a4 2040 if (s->theora < 0x030200)
9a7ad925 2041 {
bb270c08 2042 s->flipped_image = 1;
9a7ad925
AB
2043 av_log(avctx, AV_LOG_DEBUG, "Old (<alpha3) Theora bitstream, flipped image\n");
2044 }
f44ee2c3 2045
277e3e53
DC
2046 visible_width = s->width = get_bits(gb, 16) << 4;
2047 visible_height = s->height = get_bits(gb, 16) << 4;
115329f1 2048
0ecca7a4 2049 if(avcodec_check_dimensions(avctx, s->width, s->height)){
7146d2c2 2050 av_log(avctx, AV_LOG_ERROR, "Invalid dimensions (%dx%d)\n", s->width, s->height);
0ecca7a4
MN
2051 s->width= s->height= 0;
2052 return -1;
2053 }
7146d2c2
AB
2054
2055 if (s->theora >= 0x030400)
2056 {
e278056f 2057 skip_bits(gb, 32); /* total number of superblocks in a frame */
bb270c08 2058 // fixme, the next field is 36bits long
e278056f
MN
2059 skip_bits(gb, 32); /* total number of blocks in a frame */
2060 skip_bits(gb, 4); /* total number of blocks in a frame */
2061 skip_bits(gb, 32); /* total number of macroblocks in a frame */
7146d2c2 2062 }
f44ee2c3 2063
277e3e53 2064 if (s->theora >= 0x030200) {
a0ce2d1b
DC
2065 visible_width = get_bits_long(gb, 24);
2066 visible_height = get_bits_long(gb, 24);
c0f716b8 2067
ba4816a0
AJ
2068 skip_bits(gb, 8); /* offset x */
2069 skip_bits(gb, 8); /* offset y */
2070 }
f44ee2c3 2071
e278056f
MN
2072 skip_bits(gb, 32); /* fps numerator */
2073 skip_bits(gb, 32); /* fps denumerator */
2074 skip_bits(gb, 24); /* aspect numerator */
2075 skip_bits(gb, 24); /* aspect denumerator */
115329f1 2076
ba7ee4a4 2077 if (s->theora < 0x030200)
e278056f
MN
2078 skip_bits(gb, 5); /* keyframe frequency force */
2079 skip_bits(gb, 8); /* colorspace */
7146d2c2 2080 if (s->theora >= 0x030400)
e278056f
MN
2081 skip_bits(gb, 2); /* pixel format: 420,res,422,444 */
2082 skip_bits(gb, 24); /* bitrate */
f44ee2c3 2083
e278056f 2084 skip_bits(gb, 6); /* quality hint */
115329f1 2085
ba7ee4a4 2086 if (s->theora >= 0x030200)
105c3d25 2087 {
e278056f 2088 skip_bits(gb, 5); /* keyframe frequency force */
115329f1 2089
bb270c08 2090 if (s->theora < 0x030400)
e278056f 2091 skip_bits(gb, 5); /* spare bits */
105c3d25 2092 }
115329f1 2093
e278056f 2094// align_get_bits(gb);
115329f1 2095
c0f716b8
AJ
2096 if ( visible_width <= s->width && visible_width > s->width-16
2097 && visible_height <= s->height && visible_height > s->height-16)
2098 avcodec_set_dimensions(avctx, visible_width, visible_height);
2099 else
2100 avcodec_set_dimensions(avctx, s->width, s->height);
f44ee2c3 2101
f44ee2c3
AB
2102 return 0;
2103}
2104
e278056f 2105static int theora_decode_tables(AVCodecContext *avctx, GetBitContext *gb)
f44ee2c3
AB
2106{
2107 Vp3DecodeContext *s = avctx->priv_data;
ae1dd8e1 2108 int i, n, matrices, inter, plane;
ba7ee4a4
MC
2109
2110 if (s->theora >= 0x030200) {
e278056f 2111 n = get_bits(gb, 3);
9c7154c7 2112 /* loop filter limit values table */
ba7ee4a4 2113 for (i = 0; i < 64; i++)
e278056f 2114 s->filter_limit_values[i] = get_bits(gb, n);
ba7ee4a4 2115 }
115329f1 2116
ba7ee4a4 2117 if (s->theora >= 0x030200)
e278056f 2118 n = get_bits(gb, 4) + 1;
ba7ee4a4
MC
2119 else
2120 n = 16;
f44ee2c3
AB
2121 /* quality threshold table */
2122 for (i = 0; i < 64; i++)
e278056f 2123 s->coded_ac_scale_factor[i] = get_bits(gb, n);
f44ee2c3 2124
ba7ee4a4 2125 if (s->theora >= 0x030200)
e278056f 2126 n = get_bits(gb, 4) + 1;
ba7ee4a4
MC
2127 else
2128 n = 16;
f44ee2c3
AB
2129 /* dc scale factor table */
2130 for (i = 0; i < 64; i++)
e278056f 2131 s->coded_dc_scale_factor[i] = get_bits(gb, n);
f44ee2c3 2132
ba7ee4a4 2133 if (s->theora >= 0x030200)
e278056f 2134 matrices = get_bits(gb, 9) + 1;
ba7ee4a4 2135 else
2da2ba03 2136 matrices = 3;
f44ee2c3 2137
ae1dd8e1
MN
2138 if(matrices > 384){
2139 av_log(avctx, AV_LOG_ERROR, "invalid number of base matrixes\n");
2140 return -1;
2141 }
3c3f113e 2142
ae1dd8e1 2143 for(n=0; n<matrices; n++){
bb270c08 2144 for (i = 0; i < 64; i++)
ae1dd8e1
MN
2145 s->base_matrix[n][i]= get_bits(gb, 8);
2146 }
2da2ba03 2147
ae1dd8e1
MN
2148 for (inter = 0; inter <= 1; inter++) {
2149 for (plane = 0; plane <= 2; plane++) {
2150 int newqr= 1;
2151 if (inter || plane > 0)
5fc32c27 2152 newqr = get_bits1(gb);
39922395 2153 if (!newqr) {
ae1dd8e1 2154 int qtj, plj;
5fc32c27 2155 if(inter && get_bits1(gb)){
ae1dd8e1
MN
2156 qtj = 0;
2157 plj = plane;
2158 }else{
2159 qtj= (3*inter + plane - 1) / 3;
2160 plj= (plane + 2) % 3;
2161 }
2162 s->qr_count[inter][plane]= s->qr_count[qtj][plj];
2163 memcpy(s->qr_size[inter][plane], s->qr_size[qtj][plj], sizeof(s->qr_size[0][0]));
2164 memcpy(s->qr_base[inter][plane], s->qr_base[qtj][plj], sizeof(s->qr_base[0][0]));
2165 } else {
2166 int qri= 0;
39922395 2167 int qi = 0;
ae1dd8e1
MN
2168
2169 for(;;){
2170 i= get_bits(gb, av_log2(matrices-1)+1);
2171 if(i>= matrices){
2172 av_log(avctx, AV_LOG_ERROR, "invalid base matrix index\n");
2173 return -1;
2174 }
2175 s->qr_base[inter][plane][qri]= i;
2176 if(qi >= 63)
2177 break;
2178 i = get_bits(gb, av_log2(63-qi)+1) + 1;
2179 s->qr_size[inter][plane][qri++]= i;
2180 qi += i;
39922395 2181 }
ae1dd8e1 2182
2da2ba03 2183 if (qi > 63) {
7146d2c2 2184 av_log(avctx, AV_LOG_ERROR, "invalid qi %d > 63\n", qi);
bb270c08
DB
2185 return -1;
2186 }
ae1dd8e1 2187 s->qr_count[inter][plane]= qri;
39922395
MM
2188 }
2189 }
2190 }
2191
2da2ba03 2192 /* Huffman tables */
39922395
MM
2193 for (s->hti = 0; s->hti < 80; s->hti++) {
2194 s->entries = 0;
2195 s->huff_code_size = 1;
5fc32c27 2196 if (!get_bits1(gb)) {
39922395 2197 s->hbits = 0;
00bbe276
AC
2198 if(read_huffman_tree(avctx, gb))
2199 return -1;
39922395 2200 s->hbits = 1;
00bbe276
AC
2201 if(read_huffman_tree(avctx, gb))
2202 return -1;
39922395
MM
2203 }
2204 }
115329f1 2205
f44ee2c3 2206 s->theora_tables = 1;
115329f1 2207
f44ee2c3
AB
2208 return 0;
2209}
2210
5ef251e5 2211static av_cold int theora_decode_init(AVCodecContext *avctx)
f44ee2c3
AB
2212{
2213 Vp3DecodeContext *s = avctx->priv_data;
2214 GetBitContext gb;
2215 int ptype;
da91ed59
AJ
2216 uint8_t *header_start[3];
2217 int header_len[3];
2218 int i;
115329f1 2219
f44ee2c3
AB
2220 s->theora = 1;
2221
2222 if (!avctx->extradata_size)
7146d2c2
AB
2223 {
2224 av_log(avctx, AV_LOG_ERROR, "Missing extradata!\n");
bb270c08 2225 return -1;
7146d2c2 2226 }
f44ee2c3 2227
da91ed59
AJ
2228 if (ff_split_xiph_headers(avctx->extradata, avctx->extradata_size,
2229 42, header_start, header_len) < 0) {
2230 av_log(avctx, AV_LOG_ERROR, "Corrupt extradata\n");
2231 return -1;
2232 }
ee89b2b9 2233
da91ed59
AJ
2234 for(i=0;i<3;i++) {
2235 init_get_bits(&gb, header_start[i], header_len[i]);
f44ee2c3
AB
2236
2237 ptype = get_bits(&gb, 8);
115329f1 2238
7146d2c2
AB
2239 if (!(ptype & 0x80))
2240 {
2241 av_log(avctx, AV_LOG_ERROR, "Invalid extradata!\n");
e278056f 2242// return -1;
115329f1 2243 }
7146d2c2 2244
3700dab4 2245 // FIXME: Check for this as well.
0a8dedc9 2246 skip_bits_long(&gb, 6*8); /* "theora" */
115329f1 2247
f44ee2c3
AB
2248 switch(ptype)
2249 {
2250 case 0x80:
e278056f 2251 theora_decode_header(avctx, &gb);
bb270c08
DB
2252 break;
2253 case 0x81:
2da2ba03 2254// FIXME: is this needed? it breaks sometimes
bb270c08
DB
2255// theora_decode_comments(avctx, gb);
2256 break;
2257 case 0x82:
00bbe276
AC
2258 if (theora_decode_tables(avctx, &gb))
2259 return -1;
bb270c08
DB
2260 break;
2261 default:
2262 av_log(avctx, AV_LOG_ERROR, "Unknown Theora config packet: %d\n", ptype&~0x80);
2263 break;
f44ee2c3 2264 }
12ce1f3f
DC
2265 if(ptype != 0x81 && 8*header_len[i] != get_bits_count(&gb))
2266 av_log(avctx, AV_LOG_WARNING, "%d bits left in packet %X\n", 8*header_len[i] - get_bits_count(&gb), ptype);
116d866c
MC
2267 if (s->theora < 0x030200)
2268 break;
ee89b2b9 2269 }
f44ee2c3 2270
ba7ee4a4 2271 vp3_decode_init(avctx);
f44ee2c3
AB
2272 return 0;
2273}
2274
6f6a3e2a
DB
2275AVCodec theora_decoder = {
2276 "theora",
d86053a4 2277 CODEC_TYPE_VIDEO,
6f6a3e2a 2278 CODEC_ID_THEORA,
d86053a4 2279 sizeof(Vp3DecodeContext),
6f6a3e2a 2280 theora_decode_init,
d86053a4
MM
2281 NULL,
2282 vp3_decode_end,
2283 vp3_decode_frame,
2284 0,
d5202e4f 2285 NULL,
fe4bf374 2286 .long_name = NULL_IF_CONFIG_SMALL("Theora"),
d86053a4 2287};
6f6a3e2a 2288#endif
f44ee2c3 2289
6f6a3e2a
DB
2290AVCodec vp3_decoder = {
2291 "vp3",
f44ee2c3 2292 CODEC_TYPE_VIDEO,
6f6a3e2a 2293 CODEC_ID_VP3,
f44ee2c3 2294 sizeof(Vp3DecodeContext),
6f6a3e2a 2295 vp3_decode_init,
f44ee2c3
AB
2296 NULL,
2297 vp3_decode_end,
2298 vp3_decode_frame,
2299 0,
d5202e4f 2300 NULL,
fe4bf374 2301 .long_name = NULL_IF_CONFIG_SMALL("On2 VP3"),
f44ee2c3 2302};