FFmpeg: libavcodec/rv40.c Source File

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rv40.c

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1 /*

2 * RV40 decoder

4 *

5 * This file is part of FFmpeg.

6 *

7 * FFmpeg is free software; you can redistribute it and/or

8 * modify it under the terms of the GNU Lesser General Public

9 * License as published by the Free Software Foundation; either

10 * version 2.1 of the License, or (at your option) any later version.

11 *

12 * FFmpeg is distributed in the hope that it will be useful,

13 * but WITHOUT ANY WARRANTY; without even the implied warranty of

14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

15 * Lesser General Public License for more details.

16 *

17 * You should have received a copy of the GNU Lesser General Public

18 * License along with FFmpeg; if not, write to the Free Software

19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

20 */

22 /**

23 * @file

24 * RV40 decoder

25 */

27 #include "libavutil/imgutils.h"

29 #include "avcodec.h"

30 #include "mpegutils.h"

31 #include "mpegvideo.h"

32 #include "golomb.h"

34 #include "rv34.h"

35 #include "rv40vlc2.h"

36 #include "rv40data.h"

38 static VLC aic_top_vlc;

39 static VLC aic_mode1_vlc[AIC_MODE1_NUM], aic_mode2_vlc[AIC_MODE2_NUM];

40 static VLC ptype_vlc[NUM_PTYPE_VLCS], btype_vlc[NUM_BTYPE_VLCS];

42 static const int16_t mode2_offs[] = {

43 0, 614, 1222, 1794, 2410, 3014, 3586, 4202, 4792, 5382, 5966, 6542,

44 7138, 7716, 8292, 8864, 9444, 10030, 10642, 11212, 11814

45 };

47 /**

48 * Initialize all tables.

49 */

50 static av_cold void rv40_init_tables(void)

51 {

52 int i;

53 static VLC_TYPE aic_table[1 << AIC_TOP_BITS][2];

54 static VLC_TYPE aic_mode1_table[AIC_MODE1_NUM << AIC_MODE1_BITS][2];

55 static VLC_TYPE aic_mode2_table[11814][2];

56 static VLC_TYPE ptype_table[NUM_PTYPE_VLCS << PTYPE_VLC_BITS][2];

57 static VLC_TYPE btype_table[NUM_BTYPE_VLCS << BTYPE_VLC_BITS][2];

59 aic_top_vlc.table = aic_table;

60 aic_top_vlc.table_allocated = 1 << AIC_TOP_BITS;

61 init_vlc(&aic_top_vlc, AIC_TOP_BITS, AIC_TOP_SIZE,

62 rv40_aic_top_vlc_bits, 1, 1,

63 rv40_aic_top_vlc_codes, 1, 1, INIT_VLC_USE_NEW_STATIC);

64 for(i = 0; i < AIC_MODE1_NUM; i++){

65 // Every tenth VLC table is empty

66 if((i % 10) == 9) continue;

67 aic_mode1_vlc[i].table = &aic_mode1_table[i << AIC_MODE1_BITS];

68 aic_mode1_vlc[i].table_allocated = 1 << AIC_MODE1_BITS;

69 init_vlc(&aic_mode1_vlc[i], AIC_MODE1_BITS, AIC_MODE1_SIZE,

70 aic_mode1_vlc_bits[i], 1, 1,

71 aic_mode1_vlc_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);

72 }

73 for(i = 0; i < AIC_MODE2_NUM; i++){

74 aic_mode2_vlc[i].table = &aic_mode2_table[mode2_offs[i]];

75 aic_mode2_vlc[i].table_allocated = mode2_offs[i + 1] - mode2_offs[i];

76 init_vlc(&aic_mode2_vlc[i], AIC_MODE2_BITS, AIC_MODE2_SIZE,

77 aic_mode2_vlc_bits[i], 1, 1,

78 aic_mode2_vlc_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

79 }

80 for(i = 0; i < NUM_PTYPE_VLCS; i++){

81 ptype_vlc[i].table = &ptype_table[i << PTYPE_VLC_BITS];

82 ptype_vlc[i].table_allocated = 1 << PTYPE_VLC_BITS;

83 ff_init_vlc_sparse(&ptype_vlc[i], PTYPE_VLC_BITS, PTYPE_VLC_SIZE,

84 ptype_vlc_bits[i], 1, 1,

85 ptype_vlc_codes[i], 1, 1,

86 ptype_vlc_syms, 1, 1, INIT_VLC_USE_NEW_STATIC);

87 }

88 for(i = 0; i < NUM_BTYPE_VLCS; i++){

89 btype_vlc[i].table = &btype_table[i << BTYPE_VLC_BITS];

90 btype_vlc[i].table_allocated = 1 << BTYPE_VLC_BITS;

91 ff_init_vlc_sparse(&btype_vlc[i], BTYPE_VLC_BITS, BTYPE_VLC_SIZE,

92 btype_vlc_bits[i], 1, 1,

93 btype_vlc_codes[i], 1, 1,

94 btype_vlc_syms, 1, 1, INIT_VLC_USE_NEW_STATIC);

95 }

96 }

98 /**

99 * Get stored dimension from bitstream.

100 *

101 * If the width/height is the standard one then it's coded as a 3-bit index.

102 * Otherwise it is coded as escaped 8-bit portions.

103 */

104 static int get_dimension(GetBitContext *gb, const int *dim)

105 {

106 int t = get_bits(gb, 3);

107 int val = dim[t];

108 if(val < 0)

109 val = dim[get_bits1(gb) - val];

110 if(!val){

111 do{

112 if (get_bits_left(gb) < 8)

113 return AVERROR_INVALIDDATA;

114 t = get_bits(gb, 8);

115 val += t << 2;

116 }while(t == 0xFF);

117 }

118 return val;

119 }

120

121 /**

122 * Get encoded picture size - usually this is called from rv40_parse_slice_header.

123 */

124 static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)

125 {

126 *w = get_dimension(gb, rv40_standard_widths);

127 *h = get_dimension(gb, rv40_standard_heights);

128 }

129

130 static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)

131 {

132 int mb_bits;

133 int w = r->s.width, h = r->s.height;

134 int mb_size;

135 int ret;

136

137 memset(si, 0, sizeof(SliceInfo));

138 if(get_bits1(gb))

139 return AVERROR_INVALIDDATA;

140 si->type = get_bits(gb, 2);

141 if(si->type == 1) si->type = 0;

142 si->quant = get_bits(gb, 5);

143 if(get_bits(gb, 2))

144 return AVERROR_INVALIDDATA;

145 si->vlc_set = get_bits(gb, 2);

146 skip_bits1(gb);

147 si->pts = get_bits(gb, 13);

148 if(!si->type || !get_bits1(gb))

149 rv40_parse_picture_size(gb, &w, &h);

150 if ((ret = av_image_check_size(w, h, 0, r->s.avctx)) < 0)

151 return ret;

152 si->width = w;

153 si->height = h;

154 mb_size = ((w + 15) >> 4) * ((h + 15) >> 4);

155 mb_bits = ff_rv34_get_start_offset(gb, mb_size);

156 si->start = get_bits(gb, mb_bits);

157

158 return 0;

159 }

160

161 /**

162 * Decode 4x4 intra types array.

163 */

164 static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)

165 {

166 MpegEncContext *s = &r->s;

167 int i, j, k, v;

168 int A, B, C;

169 int pattern;

170 int8_t *ptr;

171

172 for(i = 0; i < 4; i++, dst += r->intra_types_stride){

173 if(!i && s->first_slice_line){

174 pattern = get_vlc2(gb, aic_top_vlc.table, AIC_TOP_BITS, 1);

175 dst[0] = (pattern >> 2) & 2;

176 dst[1] = (pattern >> 1) & 2;

177 dst[2] = pattern & 2;

178 dst[3] = (pattern << 1) & 2;

179 continue;

180 }

181 ptr = dst;

182 for(j = 0; j < 4; j++){

183 /* Coefficients are read using VLC chosen by the prediction pattern

184 * The first one (used for retrieving a pair of coefficients) is

185 * constructed from the top, top right and left coefficients

186 * The second one (used for retrieving only one coefficient) is

187 * top + 10 * left.

188 */

189 A = ptr[-r->intra_types_stride + 1]; // it won't be used for the last coefficient in a row

190 B = ptr[-r->intra_types_stride];

191 C = ptr[-1];

192 pattern = A + B * (1 << 4) + C * (1 << 8);

193 for(k = 0; k < MODE2_PATTERNS_NUM; k++)

194 if(pattern == rv40_aic_table_index[k])

195 break;

196 if(j < 3 && k < MODE2_PATTERNS_NUM){ //pattern is found, decoding 2 coefficients

197 v = get_vlc2(gb, aic_mode2_vlc[k].table, AIC_MODE2_BITS, 2);

198 *ptr++ = v/9;

199 *ptr++ = v%9;

200 j++;

201 }else{

202 if(B != -1 && C != -1)

203 v = get_vlc2(gb, aic_mode1_vlc[B + C*10].table, AIC_MODE1_BITS, 1);

204 else{ // tricky decoding

205 v = 0;

206 switch(C){

207 case -1: // code 0 -> 1, 1 -> 0

208 if(B < 2)

209 v = get_bits1(gb) ^ 1;

210 break;

211 case 0:

212 case 2: // code 0 -> 2, 1 -> 0

213 v = (get_bits1(gb) ^ 1) << 1;

214 break;

215 }

216 }

217 *ptr++ = v;

218 }

219 }

220 }

221 return 0;

222 }

223

224 /**

225 * Decode macroblock information.

226 */

227 static int rv40_decode_mb_info(RV34DecContext *r)

228 {

229 MpegEncContext *s = &r->s;

230 GetBitContext *gb = &s->gb;

231 int q, i;

232 int prev_type = 0;

233 int mb_pos = s->mb_x + s->mb_y * s->mb_stride;

234

235 if(!r->s.mb_skip_run) {

236 r->s.mb_skip_run = get_interleaved_ue_golomb(gb) + 1;

237 if(r->s.mb_skip_run > (unsigned)s->mb_num)

238 return -1;

239 }

240

241 if(--r->s.mb_skip_run)

242 return RV34_MB_SKIP;

243

244 if(r->avail_cache[6-4]){

245 int blocks[RV34_MB_TYPES] = {0};

246 int count = 0;

247 if(r->avail_cache[6-1])

248 blocks[r->mb_type[mb_pos - 1]]++;

249 blocks[r->mb_type[mb_pos - s->mb_stride]]++;

250 if(r->avail_cache[6-2])

251 blocks[r->mb_type[mb_pos - s->mb_stride + 1]]++;

252 if(r->avail_cache[6-5])

253 blocks[r->mb_type[mb_pos - s->mb_stride - 1]]++;

254 for(i = 0; i < RV34_MB_TYPES; i++){

255 if(blocks[i] > count){

256 count = blocks[i];

257 prev_type = i;

258 if(count>1)

259 break;

260 }

261 }

262 } else if (r->avail_cache[6-1])

263 prev_type = r->mb_type[mb_pos - 1];

264

265 if(s->pict_type == AV_PICTURE_TYPE_P){

266 prev_type = block_num_to_ptype_vlc_num[prev_type];

267 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);

268 if(q < PBTYPE_ESCAPE)

269 return q;

270 q = get_vlc2(gb, ptype_vlc[prev_type].table, PTYPE_VLC_BITS, 1);

271 av_log(s->avctx, AV_LOG_ERROR, "Dquant for P-frame\n");

272 }else{

273 prev_type = block_num_to_btype_vlc_num[prev_type];

274 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);

275 if(q < PBTYPE_ESCAPE)

276 return q;

277 q = get_vlc2(gb, btype_vlc[prev_type].table, BTYPE_VLC_BITS, 1);

278 av_log(s->avctx, AV_LOG_ERROR, "Dquant for B-frame\n");

279 }

280 return 0;

281 }

282

283 enum RV40BlockPos{

284 POS_CUR,

285 POS_TOP,

286 POS_LEFT,

287 POS_BOTTOM,

288 };

289

290 #define MASK_CUR 0x0001

291 #define MASK_RIGHT 0x0008

292 #define MASK_BOTTOM 0x0010

293 #define MASK_TOP 0x1000

294 #define MASK_Y_TOP_ROW 0x000F

295 #define MASK_Y_LAST_ROW 0xF000

296 #define MASK_Y_LEFT_COL 0x1111

297 #define MASK_Y_RIGHT_COL 0x8888

298 #define MASK_C_TOP_ROW 0x0003

299 #define MASK_C_LAST_ROW 0x000C

300 #define MASK_C_LEFT_COL 0x0005

301 #define MASK_C_RIGHT_COL 0x000A

302

303 static const int neighbour_offs_x[4] = { 0, 0, -1, 0 };

304 static const int neighbour_offs_y[4] = { 0, -1, 0, 1 };

305

306 static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp,

307 uint8_t *src, int stride, int dmode,

308 int lim_q1, int lim_p1,

309 int alpha, int beta, int beta2,

310 int chroma, int edge, int dir)

311 {

312 int filter_p1, filter_q1;

313 int strong;

314 int lims;

315

316 strong = rdsp->rv40_loop_filter_strength[dir](src, stride, beta, beta2,

317 edge, &filter_p1, &filter_q1);

318

319 lims = filter_p1 + filter_q1 + ((lim_q1 + lim_p1) >> 1) + 1;

320

321 if (strong) {

322 rdsp->rv40_strong_loop_filter[dir](src, stride, alpha,

323 lims, dmode, chroma);

324 } else if (filter_p1 & filter_q1) {

325 rdsp->rv40_weak_loop_filter[dir](src, stride, 1, 1, alpha, beta,

326 lims, lim_q1, lim_p1);

327 } else if (filter_p1 | filter_q1) {

328 rdsp->rv40_weak_loop_filter[dir](src, stride, filter_p1, filter_q1,

329 alpha, beta, lims >> 1, lim_q1 >> 1,

330 lim_p1 >> 1);

331 }

332 }

333

334 /**

335 * RV40 loop filtering function

336 */

337 static void rv40_loop_filter(RV34DecContext *r, int row)

338 {

339 MpegEncContext *s = &r->s;

340 int mb_pos, mb_x;

341 int i, j, k;

342 uint8_t *Y, *C;

343 int alpha, beta, betaY, betaC;

344 int q;

345 int mbtype[4]; ///< current macroblock and its neighbours types

346 /**

347 * flags indicating that macroblock can be filtered with strong filter

348 * it is set only for intra coded MB and MB with DCs coded separately

349 */

350 int mb_strong[4];

351 int clip[4]; ///< MB filter clipping value calculated from filtering strength

352 /**

353 * coded block patterns for luma part of current macroblock and its neighbours

354 * Format:

355 * LSB corresponds to the top left block,

356 * each nibble represents one row of subblocks.

357 */

358 int cbp[4];

359 /**

360 * coded block patterns for chroma part of current macroblock and its neighbours

361 * Format is the same as for luma with two subblocks in a row.

362 */

363 int uvcbp[4][2];

364 /**

365 * This mask represents the pattern of luma subblocks that should be filtered

366 * in addition to the coded ones because they lie at the edge of

367 * 8x8 block with different enough motion vectors

368 */

369 unsigned mvmasks[4];

370

371 mb_pos = row * s->mb_stride;

372 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){

373 int mbtype = s->current_picture_ptr->mb_type[mb_pos];

374 if(IS_INTRA(mbtype) || IS_SEPARATE_DC(mbtype))

375 r->cbp_luma [mb_pos] = r->deblock_coefs[mb_pos] = 0xFFFF;

376 if(IS_INTRA(mbtype))

377 r->cbp_chroma[mb_pos] = 0xFF;

378 }

379 mb_pos = row * s->mb_stride;

380 for(mb_x = 0; mb_x < s->mb_width; mb_x++, mb_pos++){

381 int y_h_deblock, y_v_deblock;

382 int c_v_deblock[2], c_h_deblock[2];

383 int clip_left;

384 int avail[4];

385 unsigned y_to_deblock;

386 int c_to_deblock[2];

387

388 q = s->current_picture_ptr->qscale_table[mb_pos];

389 alpha = rv40_alpha_tab[q];

390 beta = rv40_beta_tab [q];

391 betaY = betaC = beta * 3;

392 if(s->width * s->height <= 176*144)

393 betaY += beta;

394

395 avail[0] = 1;

396 avail[1] = row;

397 avail[2] = mb_x;

398 avail[3] = row < s->mb_height - 1;

399 for(i = 0; i < 4; i++){

400 if(avail[i]){

401 int pos = mb_pos + neighbour_offs_x[i] + neighbour_offs_y[i]*s->mb_stride;

402 mvmasks[i] = r->deblock_coefs[pos];

403 mbtype [i] = s->current_picture_ptr->mb_type[pos];

404 cbp [i] = r->cbp_luma[pos];

405 uvcbp[i][0] = r->cbp_chroma[pos] & 0xF;

406 uvcbp[i][1] = r->cbp_chroma[pos] >> 4;

407 }else{

408 mvmasks[i] = 0;

409 mbtype [i] = mbtype[0];

410 cbp [i] = 0;

411 uvcbp[i][0] = uvcbp[i][1] = 0;

412 }

413 mb_strong[i] = IS_INTRA(mbtype[i]) || IS_SEPARATE_DC(mbtype[i]);

414 clip[i] = rv40_filter_clip_tbl[mb_strong[i] + 1][q];

415 }

416 y_to_deblock = mvmasks[POS_CUR]

417 | (mvmasks[POS_BOTTOM] << 16);

418 /* This pattern contains bits signalling that horizontal edges of

419 * the current block can be filtered.

420 * That happens when either of adjacent subblocks is coded or lies on

421 * the edge of 8x8 blocks with motion vectors differing by more than

422 * 3/4 pel in any component (any edge orientation for some reason).

423 */

424 y_h_deblock = y_to_deblock

425 | ((cbp[POS_CUR] << 4) & ~MASK_Y_TOP_ROW)

426 | ((cbp[POS_TOP] & MASK_Y_LAST_ROW) >> 12);

427 /* This pattern contains bits signalling that vertical edges of

428 * the current block can be filtered.

429 * That happens when either of adjacent subblocks is coded or lies on

430 * the edge of 8x8 blocks with motion vectors differing by more than

431 * 3/4 pel in any component (any edge orientation for some reason).

432 */

433 y_v_deblock = y_to_deblock

434 | ((cbp[POS_CUR] << 1) & ~MASK_Y_LEFT_COL)

435 | ((cbp[POS_LEFT] & MASK_Y_RIGHT_COL) >> 3);

436 if(!mb_x)

437 y_v_deblock &= ~MASK_Y_LEFT_COL;

438 if(!row)

439 y_h_deblock &= ~MASK_Y_TOP_ROW;

440 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))

441 y_h_deblock &= ~(MASK_Y_TOP_ROW << 16);

442 /* Calculating chroma patterns is similar and easier since there is

443 * no motion vector pattern for them.

444 */

445 for(i = 0; i < 2; i++){

446 c_to_deblock[i] = (uvcbp[POS_BOTTOM][i] << 4) | uvcbp[POS_CUR][i];

447 c_v_deblock[i] = c_to_deblock[i]

448 | ((uvcbp[POS_CUR] [i] << 1) & ~MASK_C_LEFT_COL)

449 | ((uvcbp[POS_LEFT][i] & MASK_C_RIGHT_COL) >> 1);

450 c_h_deblock[i] = c_to_deblock[i]

451 | ((uvcbp[POS_TOP][i] & MASK_C_LAST_ROW) >> 2)

452 | (uvcbp[POS_CUR][i] << 2);

453 if(!mb_x)

454 c_v_deblock[i] &= ~MASK_C_LEFT_COL;

455 if(!row)

456 c_h_deblock[i] &= ~MASK_C_TOP_ROW;

457 if(row == s->mb_height - 1 || (mb_strong[POS_CUR] | mb_strong[POS_BOTTOM]))

458 c_h_deblock[i] &= ~(MASK_C_TOP_ROW << 4);

459 }

460

461 for(j = 0; j < 16; j += 4){

462 Y = s->current_picture_ptr->f->data[0] + mb_x*16 + (row*16 + j) * s->linesize;

463 for(i = 0; i < 4; i++, Y += 4){

464 int ij = i + j;

465 int clip_cur = y_to_deblock & (MASK_CUR << ij) ? clip[POS_CUR] : 0;

466 int dither = j ? ij : i*4;

467

468 // if bottom block is coded then we can filter its top edge

469 // (or bottom edge of this block, which is the same)

470 if(y_h_deblock & (MASK_BOTTOM << ij)){

471 rv40_adaptive_loop_filter(&r->rdsp, Y+4*s->linesize,

472 s->linesize, dither,

473 y_to_deblock & (MASK_BOTTOM << ij) ? clip[POS_CUR] : 0,

474 clip_cur, alpha, beta, betaY,

475 0, 0, 0);

476 }

477 // filter left block edge in ordinary mode (with low filtering strength)

478 if(y_v_deblock & (MASK_CUR << ij) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){

479 if(!i)

480 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;

481 else

482 clip_left = y_to_deblock & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;

483 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,

484 clip_cur,

485 clip_left,

486 alpha, beta, betaY, 0, 0, 1);

487 }

488 // filter top edge of the current macroblock when filtering strength is high

489 if(!j && y_h_deblock & (MASK_CUR << i) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){

490 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,

491 clip_cur,

492 mvmasks[POS_TOP] & (MASK_TOP << i) ? clip[POS_TOP] : 0,

493 alpha, beta, betaY, 0, 1, 0);

494 }

495 // filter left block edge in edge mode (with high filtering strength)

496 if(y_v_deblock & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){

497 clip_left = mvmasks[POS_LEFT] & (MASK_RIGHT << j) ? clip[POS_LEFT] : 0;

498 rv40_adaptive_loop_filter(&r->rdsp, Y, s->linesize, dither,

499 clip_cur,

500 clip_left,

501 alpha, beta, betaY, 0, 1, 1);

502 }

503 }

504 }

505 for(k = 0; k < 2; k++){

506 for(j = 0; j < 2; j++){

507 C = s->current_picture_ptr->f->data[k + 1] + mb_x*8 + (row*8 + j*4) * s->uvlinesize;

508 for(i = 0; i < 2; i++, C += 4){

509 int ij = i + j*2;

510 int clip_cur = c_to_deblock[k] & (MASK_CUR << ij) ? clip[POS_CUR] : 0;

511 if(c_h_deblock[k] & (MASK_CUR << (ij+2))){

512 int clip_bot = c_to_deblock[k] & (MASK_CUR << (ij+2)) ? clip[POS_CUR] : 0;

513 rv40_adaptive_loop_filter(&r->rdsp, C+4*s->uvlinesize, s->uvlinesize, i*8,

514 clip_bot,

515 clip_cur,

516 alpha, beta, betaC, 1, 0, 0);

517 }

518 if((c_v_deblock[k] & (MASK_CUR << ij)) && (i || !(mb_strong[POS_CUR] | mb_strong[POS_LEFT]))){

519 if(!i)

520 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;

521 else

522 clip_left = c_to_deblock[k] & (MASK_CUR << (ij-1)) ? clip[POS_CUR] : 0;

523 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,

524 clip_cur,

525 clip_left,

526 alpha, beta, betaC, 1, 0, 1);

527 }

528 if(!j && c_h_deblock[k] & (MASK_CUR << ij) && (mb_strong[POS_CUR] | mb_strong[POS_TOP])){

529 int clip_top = uvcbp[POS_TOP][k] & (MASK_CUR << (ij+2)) ? clip[POS_TOP] : 0;

530 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, i*8,

531 clip_cur,

532 clip_top,

533 alpha, beta, betaC, 1, 1, 0);

534 }

535 if(c_v_deblock[k] & (MASK_CUR << ij) && !i && (mb_strong[POS_CUR] | mb_strong[POS_LEFT])){

536 clip_left = uvcbp[POS_LEFT][k] & (MASK_CUR << (2*j+1)) ? clip[POS_LEFT] : 0;

537 rv40_adaptive_loop_filter(&r->rdsp, C, s->uvlinesize, j*8,

538 clip_cur,

539 clip_left,

540 alpha, beta, betaC, 1, 1, 1);

541 }

542 }

543 }

544 }

545 }

546 }

547

548 /**

549 * Initialize decoder.

550 */

551 static av_cold int rv40_decode_init(AVCodecContext *avctx)

552 {

553 RV34DecContext *r = avctx->priv_data;

554 int ret;

555

556 r->rv30 = 0;

557 if ((ret = ff_rv34_decode_init(avctx)) < 0)

558 return ret;

559 if(!aic_top_vlc.bits)

560 rv40_init_tables();

561 r->parse_slice_header = rv40_parse_slice_header;

562 r->decode_intra_types = rv40_decode_intra_types;

563 r->decode_mb_info = rv40_decode_mb_info;

564 r->loop_filter = rv40_loop_filter;

565 r->luma_dc_quant_i = rv40_luma_dc_quant[0];

566 r->luma_dc_quant_p = rv40_luma_dc_quant[1];

567 return 0;

568 }

569

570 AVCodec ff_rv40_decoder = {

571 .name = "rv40",

572 .long_name = NULL_IF_CONFIG_SMALL("RealVideo 4.0"),

573 .type = AVMEDIA_TYPE_VIDEO,

574 .id = AV_CODEC_ID_RV40,

575 .priv_data_size = sizeof(RV34DecContext),

576 .init = rv40_decode_init,

577 .close = ff_rv34_decode_end,

578 .decode = ff_rv34_decode_frame,

579 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |

580 AV_CODEC_CAP_FRAME_THREADS,

581 .flush = ff_mpeg_flush,

582 .pix_fmts = (const enum AVPixelFormat[]) {

583 AV_PIX_FMT_YUV420P,

584 AV_PIX_FMT_NONE

585 },

586 .init_thread_copy = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_init_thread_copy),

587 .update_thread_context = ONLY_IF_THREADS_ENABLED(ff_rv34_decode_update_thread_context),

588 };

SliceInfo::vlc_set

int vlc_set

VLCs used for this slice.

Definition: rv34.h:76

val

const char const char void * val

Definition: avisynth_c.h:771

btype_vlc_codes

static const uint8_t btype_vlc_codes[NUM_BTYPE_VLCS][BTYPE_VLC_SIZE]

Definition: rv40vlc2.h:679

const char * s

Definition: avisynth_c.h:768

PBTYPE_ESCAPE

#define PBTYPE_ESCAPE

Definition: rv40vlc2.h:635

AVERROR_INVALIDDATA

#define AVERROR_INVALIDDATA

Invalid data found when processing input.

Definition: error.h:59

rv40_init_tables

static av_cold void rv40_init_tables(void)

Initialize all tables.

Definition: rv40.c:50

ff_rv40_decoder

AVCodec ff_rv40_decoder

Definition: rv40.c:570

alpha

static float alpha(float a)

Definition: af_superequalizer.c:109

chroma

static av_always_inline void chroma(WaveformContext *s, AVFrame *in, AVFrame *out, int component, int intensity, int offset_y, int offset_x, int column, int mirror)

Definition: vf_waveform.c:1386

AV_PIX_FMT_NONE

Definition: pixfmt.h:61

Definition: vp9dsp_template.c:2038

RV34DecContext::decode_intra_types

int(* decode_intra_types)(struct RV34DecContext *r, GetBitContext *gb, int8_t *dst)

Definition: rv34.h:128

flush

static void flush(AVCodecContext *avctx)

Definition: aacdec_template.c:500

RV34DecContext::loop_filter

void(* loop_filter)(struct RV34DecContext *r, int row)

Definition: rv34.h:129

#define C

PTYPE_VLC_BITS

#define PTYPE_VLC_BITS

Definition: rv40vlc2.h:641

RV34DecContext::avail_cache

uint32_t avail_cache[3 *4]

8x8 block available flags (for MV prediction)

Definition: rv34.h:119

MASK_CUR

#define MASK_CUR

Definition: rv40.c:290

IS_SEPARATE_DC

#define IS_SEPARATE_DC(a)

Definition: rv34.h:37

imgutils.h

misc image utilities

get_bits

static unsigned int get_bits(GetBitContext *s, int n)

Read 1-25 bits.

Definition: get_bits.h:269

RV34DSPContext::rv40_loop_filter_strength

rv40_loop_filter_strength_func rv40_loop_filter_strength[2]

Definition: rv34dsp.h:74

init

static av_cold int init(AVCodecContext *avctx)

Definition: avrndec.c:35

RV34DecContext::s

MpegEncContext s

Definition: rv34.h:85

PTYPE_VLC_SIZE

#define PTYPE_VLC_SIZE

Definition: rv40vlc2.h:640

ff_init_vlc_sparse

int ff_init_vlc_sparse(VLC *vlc_arg, int nb_bits, int nb_codes, const void *bits, int bits_wrap, int bits_size, const void *codes, int codes_wrap, int codes_size, const void *symbols, int symbols_wrap, int symbols_size, int flags)

Definition: bitstream.c:268

SliceInfo::height

int height

coded height

Definition: rv34.h:79

BTYPE_VLC_SIZE

#define BTYPE_VLC_SIZE

Definition: rv40vlc2.h:676

AIC_MODE1_SIZE

#define AIC_MODE1_SIZE

Definition: rv40vlc2.h:428

BTYPE_VLC_BITS

#define BTYPE_VLC_BITS

Definition: rv40vlc2.h:677

mpegvideo.h

mpegvideo header.

MODE2_PATTERNS_NUM

#define MODE2_PATTERNS_NUM

Definition: rv40data.h:40

rv40_parse_picture_size

static void rv40_parse_picture_size(GetBitContext *gb, int *w, int *h)

Get encoded picture size - usually this is called from rv40_parse_slice_header.

Definition: rv40.c:124

rv34.h

RV30 and RV40 decoder common data declarations.

MpegEncContext::mb_num

int mb_num

number of MBs of a picture

Definition: mpegvideo.h:133

src

#define src

Definition: vp8dsp.c:254

SliceInfo::start

int start

Definition: rv34.h:77

AVCodec

AVCodec.

Definition: avcodec.h:3408

RV34DecContext::luma_dc_quant_p

const uint8_t * luma_dc_quant_p

luma subblock DC quantizer for interframes

Definition: rv34.h:91

decode

static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)

Definition: decode_audio.c:42

rv40_beta_tab

static const uint8_t rv40_beta_tab[32]

beta parameter for RV40 loop filter - almost the same as in JVT-A003r1

Definition: rv40data.h:80

btype_vlc_syms

static const uint8_t btype_vlc_syms[BTYPE_VLC_SIZE]

Definition: rv40vlc2.h:697

neighbour_offs_x

static const int neighbour_offs_x[4]

Definition: rv40.c:303

btype_vlc

static VLC btype_vlc[NUM_BTYPE_VLCS]

Definition: rv40.c:40

block_num_to_ptype_vlc_num

static const uint8_t block_num_to_ptype_vlc_num[12]

reverse of ptype_vlc_syms

Definition: rv40vlc2.h:668

AV_CODEC_CAP_DELAY

#define AV_CODEC_CAP_DELAY

Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...

Definition: avcodec.h:984

uint8_t

Definition: audio_convert.c:194

av_cold

#define av_cold

Definition: attributes.h:82

RV34DecContext::cbp_luma

uint16_t * cbp_luma

CBP values for luma subblocks.

Definition: rv34.h:114

#define Y

Definition: vf_boxblur.c:76

aic_mode1_vlc_bits

static const uint8_t aic_mode1_vlc_bits[AIC_MODE1_NUM][AIC_MODE1_SIZE]

Definition: rv40vlc2.h:532

SliceInfo::width

int width

coded width

Definition: rv34.h:78

MASK_C_RIGHT_COL

#define MASK_C_RIGHT_COL

Definition: rv40.c:301

RV34DSPContext::rv40_weak_loop_filter

rv40_weak_loop_filter_func rv40_weak_loop_filter[2]

Definition: rv34dsp.h:72

RV34DecContext::deblock_coefs

uint16_t * deblock_coefs

deblock coefficients for each macroblock

Definition: rv34.h:116

rv40_standard_heights

static const int rv40_standard_heights[]

Definition: rv40data.h:37

rv40_luma_dc_quant

static const uint8_t rv40_luma_dc_quant[2][32]

luma quantizer values The second table is used for inter blocks.

Definition: rv40data.h:60

rv40_adaptive_loop_filter

static void rv40_adaptive_loop_filter(RV34DSPContext *rdsp, uint8_t *src, int stride, int dmode, int lim_q1, int lim_p1, int alpha, int beta, int beta2, int chroma, int edge, int dir)

Definition: rv40.c:306

RV34_MB_SKIP

Skipped block.

Definition: rv34.h:49

MpegEncContext::mb_height

int mb_height

number of MBs horizontally & vertically

Definition: mpegvideo.h:129

mpegutils.h

MASK_Y_LAST_ROW

#define MASK_Y_LAST_ROW

Definition: rv40.c:295

#define A(x)

Definition: vp56_arith.h:28

av_log

#define av_log(a,...)

Definition: tableprint_vlc.h:28

aic_mode2_vlc

static VLC aic_mode2_vlc[AIC_MODE2_NUM]

Definition: rv40.c:39

SliceInfo::quant

int quant

quantizer used for this slice

Definition: rv34.h:75

get_bits_left

static int get_bits_left(GetBitContext *gb)

Definition: get_bits.h:596

AV_LOG_ERROR

#define AV_LOG_ERROR

Something went wrong and cannot losslessly be recovered.

Definition: log.h:176

RV34DecContext::parse_slice_header

int(* parse_slice_header)(struct RV34DecContext *r, GetBitContext *gb, SliceInfo *si)

Definition: rv34.h:126

block_num_to_btype_vlc_num

static const uint8_t block_num_to_btype_vlc_num[12]

reverse of btype_vlc_syms

Definition: rv40vlc2.h:702

init_vlc

#define init_vlc(vlc, nb_bits, nb_codes,bits, bits_wrap, bits_size,codes, codes_wrap, codes_size,flags)

Definition: vlc.h:38

rv40_filter_clip_tbl

static const uint8_t rv40_filter_clip_tbl[3][32]

clip table for RV40 loop filter - the same as in JVT-A003r1

Definition: rv40data.h:85

table

static const struct endianess table[]

#define B

Definition: huffyuvdsp.h:32

NULL_IF_CONFIG_SMALL

#define NULL_IF_CONFIG_SMALL(x)

Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...

Definition: internal.h:186

const char * r

Definition: vf_curves.c:111

dither

static const uint8_t dither[8][8]

Definition: vf_fspp.c:57

rv40_decode_mb_info

static int rv40_decode_mb_info(RV34DecContext *r)

Decode macroblock information.

Definition: rv40.c:227

MASK_Y_TOP_ROW

#define MASK_Y_TOP_ROW

Definition: rv40.c:294

AVCodec::name

const char * name

Name of the codec implementation.

Definition: avcodec.h:3415

MpegEncContext::gb

GetBitContext gb

Definition: mpegvideo.h:448

ptype_vlc_syms

static const uint8_t ptype_vlc_syms[PTYPE_VLC_SIZE]

Definition: rv40vlc2.h:663

count

GLsizei count

Definition: opengl_enc.c:109

AV_CODEC_CAP_FRAME_THREADS

#define AV_CODEC_CAP_FRAME_THREADS

Codec supports frame-level multithreading.

Definition: avcodec.h:1015

MASK_BOTTOM

#define MASK_BOTTOM

Definition: rv40.c:292

VLC

Definition: vlc.h:26

ff_mpeg_flush

void ff_mpeg_flush(AVCodecContext *avctx)

Definition: mpegvideo.c:2264

ONLY_IF_THREADS_ENABLED

#define ONLY_IF_THREADS_ENABLED(x)

Define a function with only the non-default version specified.

Definition: internal.h:225

RV34DSPContext

Definition: rv34dsp.h:57

ptype_vlc_bits

static const uint8_t ptype_vlc_bits[NUM_PTYPE_VLCS][PTYPE_VLC_SIZE]

Definition: rv40vlc2.h:653

av_image_check_size

int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)

Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...

Definition: imgutils.c:282

MASK_RIGHT

#define MASK_RIGHT

Definition: rv40.c:291

POS_BOTTOM

Definition: rv40.c:287

MpegEncContext::mb_y

int mb_y

Definition: mpegvideo.h:288

ptype_vlc

static VLC ptype_vlc[NUM_PTYPE_VLCS]

Definition: rv40.c:40

RV34DecContext::mb_type

int * mb_type

internal macroblock types

Definition: rv34.h:97

MpegEncContext::mb_skip_run

int mb_skip_run

Definition: mpegvideo.h:289

MASK_C_LEFT_COL

#define MASK_C_LEFT_COL

Definition: rv40.c:300

MpegEncContext::mb_x

int mb_x

Definition: mpegvideo.h:288

uint8_t w

Definition: llviddspenc.c:38

rv40_parse_slice_header

static int rv40_parse_slice_header(RV34DecContext *r, GetBitContext *gb, SliceInfo *si)

Definition: rv40.c:130

AIC_MODE2_NUM

#define AIC_MODE2_NUM

codes used for determining a pair of block types

Definition: rv40vlc2.h:52

MpegEncContext::current_picture_ptr

Picture * current_picture_ptr

pointer to the current picture

Definition: mpegvideo.h:184

MpegEncContext::width

int width

Definition: mpegvideo.h:100

rv40_decode_init

static av_cold int rv40_decode_init(AVCodecContext *avctx)

Initialize decoder.

Definition: rv40.c:551

MpegEncContext::mb_width

int mb_width

Definition: mpegvideo.h:129

rv40_aic_table_index

static const uint16_t rv40_aic_table_index[MODE2_PATTERNS_NUM]

intra types table

Definition: rv40data.h:47

get_vlc2

static av_always_inline int get_vlc2(GetBitContext *s, VLC_TYPE(*table)[2], int bits, int max_depth)

Parse a vlc code.

Definition: get_bits.h:563

rv40_aic_top_vlc_bits

static const uint8_t rv40_aic_top_vlc_bits[AIC_TOP_SIZE]

Definition: rv40vlc2.h:43

AIC_MODE1_BITS

#define AIC_MODE1_BITS

Definition: rv40vlc2.h:429

aic_mode1_vlc

static VLC aic_mode1_vlc[AIC_MODE1_NUM]

Definition: rv40.c:39

POS_TOP

Definition: rv40.c:285

MASK_Y_LEFT_COL

#define MASK_Y_LEFT_COL

Definition: rv40.c:296

MASK_TOP

#define MASK_TOP

Definition: rv40.c:293

VLC::bits

int bits

Definition: vlc.h:27

ptype_vlc_codes

static const uint8_t ptype_vlc_codes[NUM_PTYPE_VLCS][PTYPE_VLC_SIZE]

Definition: rv40vlc2.h:643

VLC::table_allocated

int table_allocated

Definition: vlc.h:29

MpegEncContext::first_slice_line

int first_slice_line

used in MPEG-4 too to handle resync markers

Definition: mpegvideo.h:436

ff_rv34_decode_init_thread_copy

int ff_rv34_decode_init_thread_copy(AVCodecContext *avctx)

Definition: rv34.c:1534

SliceInfo

essential slice information

Definition: rv34.h:73

avcodec.h

Libavcodec external API header.

MpegEncContext::linesize

ptrdiff_t linesize

line size, in bytes, may be different from width

Definition: mpegvideo.h:134

MASK_C_TOP_ROW

#define MASK_C_TOP_ROW

Definition: rv40.c:298

AVCodecContext

main external API structure.

Definition: avcodec.h:1518

MpegEncContext::height

int height

picture size. must be a multiple of 16

Definition: mpegvideo.h:100

get_bits1

static unsigned int get_bits1(GetBitContext *s)

Definition: get_bits.h:321

skip_bits1

static void skip_bits1(GetBitContext *s)

Definition: get_bits.h:346

aic_mode2_vlc_codes

static const uint16_t aic_mode2_vlc_codes[AIC_MODE2_NUM][AIC_MODE2_SIZE]

Definition: rv40vlc2.h:56

Picture::f

struct AVFrame * f

Definition: mpegpicture.h:46

MASK_C_LAST_ROW

#define MASK_C_LAST_ROW

Definition: rv40.c:299

mode2_offs

static const int16_t mode2_offs[]

Definition: rv40.c:42

ff_rv34_decode_init

av_cold int ff_rv34_decode_init(AVCodecContext *avctx)

Initialize decoder.

Definition: rv34.c:1492

AV_CODEC_ID_RV40

Definition: avcodec.h:287

MpegEncContext::uvlinesize

ptrdiff_t uvlinesize

line size, for chroma in bytes, may be different from width

Definition: mpegvideo.h:135

dim

int dim

Definition: vorbis_enc_data.h:451

ff_rv34_decode_frame

int ff_rv34_decode_frame(AVCodecContext *avctx, void *data, int *got_picture_ptr, AVPacket *avpkt)

Definition: rv34.c:1643

RV34DecContext::intra_types_stride

int intra_types_stride

block types array stride

Definition: rv34.h:89

MpegEncContext::pict_type

int pict_type

AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...

Definition: mpegvideo.h:212

pix_fmts

static enum AVPixelFormat pix_fmts[]

Definition: libkvazaar.c:266

rv40_standard_widths

static const int rv40_standard_widths[]

standard widths and heights coded in RV40

Definition: rv40data.h:36

AVFrame::data

uint8_t * data[AV_NUM_DATA_POINTERS]

pointer to the picture/channel planes.

Definition: frame.h:232

aic_top_vlc

static VLC aic_top_vlc

Definition: rv40.c:38

MpegEncContext

MpegEncContext.

Definition: mpegvideo.h:81

AIC_TOP_SIZE

#define AIC_TOP_SIZE

Definition: rv40vlc2.h:37

ff_rv34_decode_end

av_cold int ff_rv34_decode_end(AVCodecContext *avctx)

Definition: rv34.c:1849

Picture::qscale_table

int8_t * qscale_table

Definition: mpegpicture.h:50

MpegEncContext::avctx

struct AVCodecContext * avctx

Definition: mpegvideo.h:98

RV34DecContext::decode_mb_info

int(* decode_mb_info)(struct RV34DecContext *r)

Definition: rv34.h:127

aic_mode1_vlc_codes

static const uint8_t aic_mode1_vlc_codes[AIC_MODE1_NUM][AIC_MODE1_SIZE]

Definition: rv40vlc2.h:431

stride

GLint GLenum GLboolean GLsizei stride

Definition: opengl_enc.c:105

MASK_Y_RIGHT_COL

#define MASK_Y_RIGHT_COL

Definition: rv40.c:297

AV_PIX_FMT_YUV420P

planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)

Definition: pixfmt.h:62

GetBitContext

Definition: get_bits.h:56

get_dimension

static int get_dimension(GetBitContext *gb, const int *dim)

Get stored dimension from bitstream.

Definition: rv40.c:104

MpegEncContext::mb_stride

int mb_stride

mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 ...

Definition: mpegvideo.h:130

clip

static double clip(void *opaque, double val)

Clip value val in the minval - maxval range.

Definition: vf_lut.c:162

POS_CUR

Definition: rv40.c:284

INIT_VLC_USE_NEW_STATIC

#define INIT_VLC_USE_NEW_STATIC

Definition: vlc.h:55

RV34DSPContext::rv40_strong_loop_filter

rv40_strong_loop_filter_func rv40_strong_loop_filter[2]

Definition: rv34dsp.h:73

ff_rv34_decode_update_thread_context

int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecContext *src)

Definition: rv34.c:1562

AIC_TOP_BITS

#define AIC_TOP_BITS

codes used for the first four block types

Definition: rv40vlc2.h:36

AIC_MODE2_SIZE

#define AIC_MODE2_SIZE

Definition: rv40vlc2.h:53

POS_LEFT

Definition: rv40.c:286

ff_rv34_get_start_offset

int ff_rv34_get_start_offset(GetBitContext *gb, int mb_size)

Decode starting slice position.

Definition: rv34.c:330

IS_INTRA

#define IS_INTRA(x, y)

RV34DecContext

decoder context

Definition: rv34.h:84

AVCodecContext::priv_data

void * priv_data

Definition: avcodec.h:1545

NUM_BTYPE_VLCS

#define NUM_BTYPE_VLCS

tables used for P-frame macroblock type decoding

Definition: rv40vlc2.h:675

RV40BlockPos

Definition: rv40.c:283

RV34_MB_TYPES

Definition: rv34.h:55

rv40vlc2.h

RV40 VLC tables used for macroblock information decoding.

btype_vlc_bits

static const uint8_t btype_vlc_bits[NUM_BTYPE_VLCS][PTYPE_VLC_SIZE]

Definition: rv40vlc2.h:688

VLC::table

VLC_TYPE(* table)[2]

code, bits

Definition: vlc.h:28

rv40_alpha_tab

static const uint8_t rv40_alpha_tab[32]

alpha parameter for RV40 loop filter - almost the same as in JVT-A003r1

Definition: rv40data.h:73

AIC_MODE1_NUM

#define AIC_MODE1_NUM

Codes used for determining block type.

Definition: rv40vlc2.h:427

RV34DecContext::luma_dc_quant_i

const uint8_t * luma_dc_quant_i

luma subblock DC quantizer for intraframes

Definition: rv34.h:90

rv40_decode_intra_types

static int rv40_decode_intra_types(RV34DecContext *r, GetBitContext *gb, int8_t *dst)

Decode 4x4 intra types array.

Definition: rv40.c:164

NUM_PTYPE_VLCS

#define NUM_PTYPE_VLCS

tables used for P-frame macroblock type decoding

Definition: rv40vlc2.h:639

Picture::mb_type

uint32_t * mb_type

types and macros are defined in mpegutils.h

Definition: mpegpicture.h:56

SliceInfo::type

int type

slice type (intra, inter)

Definition: rv34.h:74

AIC_MODE2_BITS

#define AIC_MODE2_BITS

Definition: rv40vlc2.h:54

AVMEDIA_TYPE_VIDEO

Definition: avutil.h:201

VLC_TYPE

#define VLC_TYPE

Definition: vlc.h:24

get_interleaved_ue_golomb

static unsigned get_interleaved_ue_golomb(GetBitContext *gb)

Definition: golomb.h:115

rv40data.h

miscellaneous RV40 tables

stride

#define stride

neighbour_offs_y

static const int neighbour_offs_y[4]

Definition: rv40.c:304

RV34DecContext::rv30

int rv30

indicates which RV variant is currently decoded

Definition: rv34.h:104

rv40_aic_top_vlc_codes

static const uint8_t rv40_aic_top_vlc_codes[AIC_TOP_SIZE]

Definition: rv40vlc2.h:38

golomb.h

exp golomb vlc stuff

AVPixelFormat

Pixel format.

Definition: pixfmt.h:60

AV_CODEC_CAP_DR1

#define AV_CODEC_CAP_DR1

Codec uses get_buffer() for allocating buffers and supports custom allocators.

Definition: avcodec.h:959

RV34DecContext::rdsp

RV34DSPContext rdsp

Definition: rv34.h:86

rv40_loop_filter

static void rv40_loop_filter(RV34DecContext *r, int row)

RV40 loop filtering function.

Definition: rv40.c:337

aic_mode2_vlc_bits

static const uint8_t aic_mode2_vlc_bits[AIC_MODE2_NUM][AIC_MODE2_SIZE]

Definition: rv40vlc2.h:239

AV_PICTURE_TYPE_P

Predicted.

Definition: avutil.h:275

SliceInfo::pts

int pts

frame timestamp

Definition: rv34.h:80

RV34DecContext::cbp_chroma

uint8_t * cbp_chroma

CBP values for chroma subblocks.

Definition: rv34.h:115

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