FFmpeg: libavcodec/h264_mb.c Source File

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h264_mb.c

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1 /*

2 * H.26L/H.264/AVC/JVT/14496-10/... 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 * H.264 / AVC / MPEG4 part10 macroblock decoding

25 */

27 #include <stdint.h>

29 #include "config.h"

31 #include "libavutil/common.h"

32 #include "libavutil/intreadwrite.h"

33 #include "avcodec.h"

34 #include "h264.h"

35 #include "qpeldsp.h"

36 #include "svq3.h"

37 #include "thread.h"

39 static inline int get_lowest_part_list_y(H264Context *h, H264Picture *pic, int n,

40 int height, int y_offset, int list)

41 {

42 int raw_my = h->mv_cache[list][scan8[n]][1];

43 int filter_height_down = (raw_my & 3) ? 3 : 0;

44 int full_my = (raw_my >> 2) + y_offset;

45 int bottom = full_my + filter_height_down + height;

47 av_assert2(height >= 0);

49 return FFMAX(0, bottom);

50 }

52 static inline void get_lowest_part_y(H264Context *h, int16_t refs[2][48], int n,

53 int height, int y_offset, int list0,

54 int list1, int *nrefs)

55 {

56 int my;

58 y_offset += 16 * (h->mb_y >> MB_FIELD(h));

60 if (list0) {

61 int ref_n = h->ref_cache[0][scan8[n]];

62 H264Picture *ref = &h->ref_list[0][ref_n];

64 // Error resilience puts the current picture in the ref list.

65 // Don't try to wait on these as it will cause a deadlock.

66 // Fields can wait on each other, though.

67 if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||

68 (ref->reference & 3) != h->picture_structure) {

69 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);

70 if (refs[0][ref_n] < 0)

71 nrefs[0] += 1;

72 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);

73 }

74 }

76 if (list1) {

77 int ref_n = h->ref_cache[1][scan8[n]];

78 H264Picture *ref = &h->ref_list[1][ref_n];

80 if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||

81 (ref->reference & 3) != h->picture_structure) {

82 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);

83 if (refs[1][ref_n] < 0)

84 nrefs[1] += 1;

85 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);

86 }

87 }

88 }

90 /**

91 * Wait until all reference frames are available for MC operations.

92 *

93 * @param h the H264 context

94 */

95 static void await_references(H264Context *h)

96 {

97 const int mb_xy = h->mb_xy;

98 const int mb_type = h->cur_pic.mb_type[mb_xy];

99 int16_t refs[2][48];

100 int nrefs[2] = { 0 };

101 int ref, list;

102

103 memset(refs, -1, sizeof(refs));

104

105 if (IS_16X16(mb_type)) {

106 get_lowest_part_y(h, refs, 0, 16, 0,

107 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);

108 } else if (IS_16X8(mb_type)) {

109 get_lowest_part_y(h, refs, 0, 8, 0,

110 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);

111 get_lowest_part_y(h, refs, 8, 8, 8,

112 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);

113 } else if (IS_8X16(mb_type)) {

114 get_lowest_part_y(h, refs, 0, 16, 0,

115 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);

116 get_lowest_part_y(h, refs, 4, 16, 0,

117 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);

118 } else {

119 int i;

120

121 av_assert2(IS_8X8(mb_type));

122

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

124 const int sub_mb_type = h->sub_mb_type[i];

125 const int n = 4 * i;

126 int y_offset = (i & 2) << 2;

127

128 if (IS_SUB_8X8(sub_mb_type)) {

129 get_lowest_part_y(h, refs, n, 8, y_offset,

130 IS_DIR(sub_mb_type, 0, 0),

131 IS_DIR(sub_mb_type, 0, 1),

132 nrefs);

133 } else if (IS_SUB_8X4(sub_mb_type)) {

134 get_lowest_part_y(h, refs, n, 4, y_offset,

135 IS_DIR(sub_mb_type, 0, 0),

136 IS_DIR(sub_mb_type, 0, 1),

137 nrefs);

138 get_lowest_part_y(h, refs, n + 2, 4, y_offset + 4,

139 IS_DIR(sub_mb_type, 0, 0),

140 IS_DIR(sub_mb_type, 0, 1),

141 nrefs);

142 } else if (IS_SUB_4X8(sub_mb_type)) {

143 get_lowest_part_y(h, refs, n, 8, y_offset,

144 IS_DIR(sub_mb_type, 0, 0),

145 IS_DIR(sub_mb_type, 0, 1),

146 nrefs);

147 get_lowest_part_y(h, refs, n + 1, 8, y_offset,

148 IS_DIR(sub_mb_type, 0, 0),

149 IS_DIR(sub_mb_type, 0, 1),

150 nrefs);

151 } else {

152 int j;

153 av_assert2(IS_SUB_4X4(sub_mb_type));

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

155 int sub_y_offset = y_offset + 2 * (j & 2);

156 get_lowest_part_y(h, refs, n + j, 4, sub_y_offset,

157 IS_DIR(sub_mb_type, 0, 0),

158 IS_DIR(sub_mb_type, 0, 1),

159 nrefs);

160 }

161 }

162 }

163 }

164

165 for (list = h->list_count - 1; list >= 0; list--)

166 for (ref = 0; ref < 48 && nrefs[list]; ref++) {

167 int row = refs[list][ref];

168 if (row >= 0) {

169 H264Picture *ref_pic = &h->ref_list[list][ref];

170 int ref_field = ref_pic->reference - 1;

171 int ref_field_picture = ref_pic->field_picture;

172 int pic_height = 16 * h->mb_height >> ref_field_picture;

173

174 row <<= MB_MBAFF(h);

175 nrefs[list]--;

176

177 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields

178 ff_thread_await_progress(&ref_pic->tf,

179 FFMIN((row >> 1) - !(row & 1),

180 pic_height - 1),

181 1);

182 ff_thread_await_progress(&ref_pic->tf,

183 FFMIN((row >> 1), pic_height - 1),

184 0);

185 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame

186 ff_thread_await_progress(&ref_pic->tf,

187 FFMIN(row * 2 + ref_field,

188 pic_height - 1),

189 0);

190 } else if (FIELD_PICTURE(h)) {

191 ff_thread_await_progress(&ref_pic->tf,

192 FFMIN(row, pic_height - 1),

193 ref_field);

194 } else {

195 ff_thread_await_progress(&ref_pic->tf,

196 FFMIN(row, pic_height - 1),

197 0);

198 }

199 }

200 }

201 }

202

203 static av_always_inline void mc_dir_part(H264Context *h, H264Picture *pic,

204 int n, int square, int height,

205 int delta, int list,

206 uint8_t *dest_y, uint8_t *dest_cb,

207 uint8_t *dest_cr,

208 int src_x_offset, int src_y_offset,

209 qpel_mc_func *qpix_op,

210 h264_chroma_mc_func chroma_op,

211 int pixel_shift, int chroma_idc)

212 {

213 const int mx = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8;

214 int my = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8;

215 const int luma_xy = (mx & 3) + ((my & 3) << 2);

216 ptrdiff_t offset = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize;

217 uint8_t *src_y = pic->f.data[0] + offset;

218 uint8_t *src_cb, *src_cr;

219 int extra_width = 0;

220 int extra_height = 0;

221 int emu = 0;

222 const int full_mx = mx >> 2;

223 const int full_my = my >> 2;

224 const int pic_width = 16 * h->mb_width;

225 const int pic_height = 16 * h->mb_height >> MB_FIELD(h);

226 int ysh;

227

228 if (mx & 7)

229 extra_width -= 3;

230 if (my & 7)

231 extra_height -= 3;

232

233 if (full_mx < 0 - extra_width ||

234 full_my < 0 - extra_height ||

235 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||

236 full_my + 16 /*FIXME*/ > pic_height + extra_height) {

237 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,

238 src_y - (2 << pixel_shift) - 2 * h->mb_linesize,

239 h->mb_linesize, h->mb_linesize,

240 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,

241 full_my - 2, pic_width, pic_height);

242 src_y = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;

243 emu = 1;

244 }

245

246 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps?

247 if (!square)

248 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);

249

250 if (CONFIG_GRAY && h->flags & CODEC_FLAG_GRAY)

251 return;

252

253 if (chroma_idc == 3 /* yuv444 */) {

254 src_cb = pic->f.data[1] + offset;

255 if (emu) {

256 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,

257 src_cb - (2 << pixel_shift) - 2 * h->mb_linesize,

258 h->mb_linesize, h->mb_linesize,

259 16 + 5, 16 + 5 /*FIXME*/,

260 full_mx - 2, full_my - 2,

261 pic_width, pic_height);

262 src_cb = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;

263 }

264 qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps?

265 if (!square)

266 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize);

267

268 src_cr = pic->f.data[2] + offset;

269 if (emu) {

270 h->vdsp.emulated_edge_mc(h->edge_emu_buffer,

271 src_cr - (2 << pixel_shift) - 2 * h->mb_linesize,

272 h->mb_linesize, h->mb_linesize,

273 16 + 5, 16 + 5 /*FIXME*/,

274 full_mx - 2, full_my - 2,

275 pic_width, pic_height);

276 src_cr = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;

277 }

278 qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps?

279 if (!square)

280 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize);

281 return;

282 }

283

284 ysh = 3 - (chroma_idc == 2 /* yuv422 */);

285 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(h)) {

286 // chroma offset when predicting from a field of opposite parity

287 my += 2 * ((h->mb_y & 1) - (pic->reference - 1));

288 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);

289 }

290

291 src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) +

292 (my >> ysh) * h->mb_uvlinesize;

293 src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) +

294 (my >> ysh) * h->mb_uvlinesize;

295

296 if (emu) {

297 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb,

298 h->mb_uvlinesize, h->mb_uvlinesize,

299 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),

300 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));

301 src_cb = h->edge_emu_buffer;

302 }

303 chroma_op(dest_cb, src_cb, h->mb_uvlinesize,

304 height >> (chroma_idc == 1 /* yuv420 */),

305 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);

306

307 if (emu) {

308 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cr,

309 h->mb_uvlinesize, h->mb_uvlinesize,

310 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),

311 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));

312 src_cr = h->edge_emu_buffer;

313 }

314 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),

315 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);

316 }

317

318 static av_always_inline void mc_part_std(H264Context *h, int n, int square,

319 int height, int delta,

320 uint8_t *dest_y, uint8_t *dest_cb,

321 uint8_t *dest_cr,

322 int x_offset, int y_offset,

323 qpel_mc_func *qpix_put,

324 h264_chroma_mc_func chroma_put,

325 qpel_mc_func *qpix_avg,

326 h264_chroma_mc_func chroma_avg,

327 int list0, int list1,

328 int pixel_shift, int chroma_idc)

329 {

330 qpel_mc_func *qpix_op = qpix_put;

331 h264_chroma_mc_func chroma_op = chroma_put;

332

333 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

334 if (chroma_idc == 3 /* yuv444 */) {

335 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

336 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

337 } else if (chroma_idc == 2 /* yuv422 */) {

338 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

339 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

340 } else { /* yuv420 */

341 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

342 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

343 }

344 x_offset += 8 * h->mb_x;

345 y_offset += 8 * (h->mb_y >> MB_FIELD(h));

346

347 if (list0) {

348 H264Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]];

349 mc_dir_part(h, ref, n, square, height, delta, 0,

350 dest_y, dest_cb, dest_cr, x_offset, y_offset,

351 qpix_op, chroma_op, pixel_shift, chroma_idc);

352

353 qpix_op = qpix_avg;

354 chroma_op = chroma_avg;

355 }

356

357 if (list1) {

358 H264Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]];

359 mc_dir_part(h, ref, n, square, height, delta, 1,

360 dest_y, dest_cb, dest_cr, x_offset, y_offset,

361 qpix_op, chroma_op, pixel_shift, chroma_idc);

362 }

363 }

364

365 static av_always_inline void mc_part_weighted(H264Context *h, int n, int square,

366 int height, int delta,

367 uint8_t *dest_y, uint8_t *dest_cb,

368 uint8_t *dest_cr,

369 int x_offset, int y_offset,

370 qpel_mc_func *qpix_put,

371 h264_chroma_mc_func chroma_put,

372 h264_weight_func luma_weight_op,

373 h264_weight_func chroma_weight_op,

374 h264_biweight_func luma_weight_avg,

375 h264_biweight_func chroma_weight_avg,

376 int list0, int list1,

377 int pixel_shift, int chroma_idc)

378 {

379 int chroma_height;

380

381 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

382 if (chroma_idc == 3 /* yuv444 */) {

383 chroma_height = height;

384 chroma_weight_avg = luma_weight_avg;

385 chroma_weight_op = luma_weight_op;

386 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

387 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

388 } else if (chroma_idc == 2 /* yuv422 */) {

389 chroma_height = height;

390 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

391 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

392 } else { /* yuv420 */

393 chroma_height = height >> 1;

394 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

395 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

396 }

397 x_offset += 8 * h->mb_x;

398 y_offset += 8 * (h->mb_y >> MB_FIELD(h));

399

400 if (list0 && list1) {

401 /* don't optimize for luma-only case, since B-frames usually

402 * use implicit weights => chroma too. */

403 uint8_t *tmp_cb = h->bipred_scratchpad;

404 uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift);

405 uint8_t *tmp_y = h->bipred_scratchpad + 16 * h->mb_uvlinesize;

406 int refn0 = h->ref_cache[0][scan8[n]];

407 int refn1 = h->ref_cache[1][scan8[n]];

408

409 mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0,

410 dest_y, dest_cb, dest_cr,

411 x_offset, y_offset, qpix_put, chroma_put,

412 pixel_shift, chroma_idc);

413 mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1,

414 tmp_y, tmp_cb, tmp_cr,

415 x_offset, y_offset, qpix_put, chroma_put,

416 pixel_shift, chroma_idc);

417

418 if (h->use_weight == 2) {

419 int weight0 = h->implicit_weight[refn0][refn1][h->mb_y & 1];

420 int weight1 = 64 - weight0;

421 luma_weight_avg(dest_y, tmp_y, h->mb_linesize,

422 height, 5, weight0, weight1, 0);

423 if (!CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

424 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize,

425 chroma_height, 5, weight0, weight1, 0);

426 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize,

427 chroma_height, 5, weight0, weight1, 0);

428 }

429 } else {

430 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height,

431 h->luma_log2_weight_denom,

432 h->luma_weight[refn0][0][0],

433 h->luma_weight[refn1][1][0],

434 h->luma_weight[refn0][0][1] +

435 h->luma_weight[refn1][1][1]);

436 if (!CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

437 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height,

438 h->chroma_log2_weight_denom,

439 h->chroma_weight[refn0][0][0][0],

440 h->chroma_weight[refn1][1][0][0],

441 h->chroma_weight[refn0][0][0][1] +

442 h->chroma_weight[refn1][1][0][1]);

443 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height,

444 h->chroma_log2_weight_denom,

445 h->chroma_weight[refn0][0][1][0],

446 h->chroma_weight[refn1][1][1][0],

447 h->chroma_weight[refn0][0][1][1] +

448 h->chroma_weight[refn1][1][1][1]);

449 }

450 }

451 } else {

452 int list = list1 ? 1 : 0;

453 int refn = h->ref_cache[list][scan8[n]];

454 H264Picture *ref = &h->ref_list[list][refn];

455 mc_dir_part(h, ref, n, square, height, delta, list,

456 dest_y, dest_cb, dest_cr, x_offset, y_offset,

457 qpix_put, chroma_put, pixel_shift, chroma_idc);

458

459 luma_weight_op(dest_y, h->mb_linesize, height,

460 h->luma_log2_weight_denom,

461 h->luma_weight[refn][list][0],

462 h->luma_weight[refn][list][1]);

463 if (!CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

464 if (h->use_weight_chroma) {

465 chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height,

466 h->chroma_log2_weight_denom,

467 h->chroma_weight[refn][list][0][0],

468 h->chroma_weight[refn][list][0][1]);

469 chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height,

470 h->chroma_log2_weight_denom,

471 h->chroma_weight[refn][list][1][0],

472 h->chroma_weight[refn][list][1][1]);

473 }

474 }

475 }

476 }

477

478 static av_always_inline void prefetch_motion(H264Context *h, int list,

479 int pixel_shift, int chroma_idc)

480 {

481 /* fetch pixels for estimated mv 4 macroblocks ahead

482 * optimized for 64byte cache lines */

483 const int refn = h->ref_cache[list][scan8[0]];

484 if (refn >= 0) {

485 const int mx = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * h->mb_x + 8;

486 const int my = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * h->mb_y;

487 uint8_t **src = h->ref_list[list][refn].f.data;

488 int off = (mx << pixel_shift) +

489 (my + (h->mb_x & 3) * 4) * h->mb_linesize +

490 (64 << pixel_shift);

491 h->vdsp.prefetch(src[0] + off, h->linesize, 4);

492 if (chroma_idc == 3 /* yuv444 */) {

493 h->vdsp.prefetch(src[1] + off, h->linesize, 4);

494 h->vdsp.prefetch(src[2] + off, h->linesize, 4);

495 } else {

496 off= (((mx>>1)+64)<<pixel_shift) + ((my>>1) + (h->mb_x&7))*h->uvlinesize;

497 h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);

498 }

499 }

500 }

501

502 static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y,

503 uint8_t *src_cb, uint8_t *src_cr,

504 int linesize, int uvlinesize,

505 int xchg, int chroma444,

506 int simple, int pixel_shift)

507 {

508 int deblock_topleft;

509 int deblock_top;

510 int top_idx = 1;

511 uint8_t *top_border_m1;

512 uint8_t *top_border;

513

514 if (!simple && FRAME_MBAFF(h)) {

515 if (h->mb_y & 1) {

516 if (!MB_MBAFF(h))

517 return;

518 } else {

519 top_idx = MB_MBAFF(h) ? 0 : 1;

520 }

521 }

522

523 if (h->deblocking_filter == 2) {

524 deblock_topleft = h->slice_table[h->mb_xy - 1 - h->mb_stride] == h->slice_num;

525 deblock_top = h->top_type;

526 } else {

527 deblock_topleft = (h->mb_x > 0);

528 deblock_top = (h->mb_y > !!MB_FIELD(h));

529 }

530

531 src_y -= linesize + 1 + pixel_shift;

532 src_cb -= uvlinesize + 1 + pixel_shift;

533 src_cr -= uvlinesize + 1 + pixel_shift;

534

535 top_border_m1 = h->top_borders[top_idx][h->mb_x - 1];

536 top_border = h->top_borders[top_idx][h->mb_x];

537

538 #define XCHG(a, b, xchg) \

539 if (pixel_shift) { \

540 if (xchg) { \

541 AV_SWAP64(b + 0, a + 0); \

542 AV_SWAP64(b + 8, a + 8); \

543 } else { \

544 AV_COPY128(b, a); \

545 } \

546 } else if (xchg) \

547 AV_SWAP64(b, a); \

548 else \

549 AV_COPY64(b, a);

550

551 if (deblock_top) {

552 if (deblock_topleft) {

553 XCHG(top_border_m1 + (8 << pixel_shift),

554 src_y - (7 << pixel_shift), 1);

555 }

556 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);

557 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);

558 if (h->mb_x + 1 < h->mb_width) {

559 XCHG(h->top_borders[top_idx][h->mb_x + 1],

560 src_y + (17 << pixel_shift), 1);

561 }

562 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

563 if (chroma444) {

564 if (deblock_topleft) {

565 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);

566 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);

567 }

568 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);

569 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);

570 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);

571 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);

572 if (h->mb_x + 1 < h->mb_width) {

573 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);

574 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);

575 }

576 } else {

577 if (deblock_topleft) {

578 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);

579 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);

580 }

581 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);

582 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);

583 }

584 }

585 }

586 }

587

588 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,

589 int index)

590 {

591 if (high_bit_depth) {

592 return AV_RN32A(((int32_t *)mb) + index);

593 } else

594 return AV_RN16A(mb + index);

595 }

596

597 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,

598 int index, int value)

599 {

600 if (high_bit_depth) {

601 AV_WN32A(((int32_t *)mb) + index, value);

602 } else

603 AV_WN16A(mb + index, value);

604 }

605

606 static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,

607 int mb_type, int is_h264,

608 int simple,

609 int transform_bypass,

610 int pixel_shift,

611 int *block_offset,

612 int linesize,

613 uint8_t *dest_y, int p)

614 {

615 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);

616 void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);

617 int i;

618 int qscale = p == 0 ? h->qscale : h->chroma_qp[p - 1];

619 block_offset += 16 * p;

620 if (IS_INTRA4x4(mb_type)) {

621 if (IS_8x8DCT(mb_type)) {

622 if (transform_bypass) {

623 idct_dc_add =

624 idct_add = h->h264dsp.h264_add_pixels8_clear;

625 } else {

626 idct_dc_add = h->h264dsp.h264_idct8_dc_add;

627 idct_add = h->h264dsp.h264_idct8_add;

628 }

629 for (i = 0; i < 16; i += 4) {

630 uint8_t *const ptr = dest_y + block_offset[i];

631 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];

632 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {

633 if (h->x264_build != -1) {

634 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

635 } else

636 h->hpc.pred8x8l_filter_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift),

637 (h-> topleft_samples_available << i) & 0x8000,

638 (h->topright_samples_available << i) & 0x4000, linesize);

639 } else {

640 const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];

641 h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,

642 (h->topright_samples_available << i) & 0x4000, linesize);

643 if (nnz) {

644 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))

645 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

646 else

647 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

648 }

649 }

650 }

651 } else {

652 if (transform_bypass) {

653 idct_dc_add =

654 idct_add = h->h264dsp.h264_add_pixels4_clear;

655 } else {

656 idct_dc_add = h->h264dsp.h264_idct_dc_add;

657 idct_add = h->h264dsp.h264_idct_add;

658 }

659 for (i = 0; i < 16; i++) {

660 uint8_t *const ptr = dest_y + block_offset[i];

661 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];

662

663 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {

664 h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

665 } else {

666 uint8_t *topright;

667 int nnz, tr;

668 uint64_t tr_high;

669 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {

670 const int topright_avail = (h->topright_samples_available << i) & 0x8000;

671 av_assert2(h->mb_y || linesize <= block_offset[i]);

672 if (!topright_avail) {

673 if (pixel_shift) {

674 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;

675 topright = (uint8_t *)&tr_high;

676 } else {

677 tr = ptr[3 - linesize] * 0x01010101u;

678 topright = (uint8_t *)&tr;

679 }

680 } else

681 topright = ptr + (4 << pixel_shift) - linesize;

682 } else

683 topright = NULL;

684

685 h->hpc.pred4x4[dir](ptr, topright, linesize);

686 nnz = h->non_zero_count_cache[scan8[i + p * 16]];

687 if (nnz) {

688 if (is_h264) {

689 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))

690 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

691 else

692 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

693 } else if (CONFIG_SVQ3_DECODER)

694 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);

695 }

696 }

697 }

698 }

699 } else {

700 h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize);

701 if (is_h264) {

702 if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {

703 if (!transform_bypass)

704 h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift),

705 h->mb_luma_dc[p],

706 h->dequant4_coeff[p][qscale][0]);

707 else {

708 static const uint8_t dc_mapping[16] = {

709 0 * 16, 1 * 16, 4 * 16, 5 * 16,

710 2 * 16, 3 * 16, 6 * 16, 7 * 16,

711 8 * 16, 9 * 16, 12 * 16, 13 * 16,

712 10 * 16, 11 * 16, 14 * 16, 15 * 16

713 };

714 for (i = 0; i < 16; i++)

715 dctcoef_set(h->mb + (p * 256 << pixel_shift),

716 pixel_shift, dc_mapping[i],

717 dctcoef_get(h->mb_luma_dc[p],

718 pixel_shift, i));

719 }

720 }

721 } else if (CONFIG_SVQ3_DECODER)

722 ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,

723 h->mb_luma_dc[p], qscale);

724 }

725 }

726

727 static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type,

728 int is_h264, int simple,

729 int transform_bypass,

730 int pixel_shift,

731 int *block_offset,

732 int linesize,

733 uint8_t *dest_y, int p)

734 {

735 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);

736 int i;

737 block_offset += 16 * p;

738 if (!IS_INTRA4x4(mb_type)) {

739 if (is_h264) {

740 if (IS_INTRA16x16(mb_type)) {

741 if (transform_bypass) {

742 if (h->sps.profile_idc == 244 &&

743 (h->intra16x16_pred_mode == VERT_PRED8x8 ||

744 h->intra16x16_pred_mode == HOR_PRED8x8)) {

745 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset,

746 h->mb + (p * 256 << pixel_shift),

747 linesize);

748 } else {

749 for (i = 0; i < 16; i++)

750 if (h->non_zero_count_cache[scan8[i + p * 16]] ||

751 dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))

752 h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],

753 h->mb + (i * 16 + p * 256 << pixel_shift),

754 linesize);

755 }

756 } else {

757 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,

758 h->mb + (p * 256 << pixel_shift),

759 linesize,

760 h->non_zero_count_cache + p * 5 * 8);

761 }

762 } else if (h->cbp & 15) {

763 if (transform_bypass) {

764 const int di = IS_8x8DCT(mb_type) ? 4 : 1;

765 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear

766 : h->h264dsp.h264_add_pixels4_clear;

767 for (i = 0; i < 16; i += di)

768 if (h->non_zero_count_cache[scan8[i + p * 16]])

769 idct_add(dest_y + block_offset[i],

770 h->mb + (i * 16 + p * 256 << pixel_shift),

771 linesize);

772 } else {

773 if (IS_8x8DCT(mb_type))

774 h->h264dsp.h264_idct8_add4(dest_y, block_offset,

775 h->mb + (p * 256 << pixel_shift),

776 linesize,

777 h->non_zero_count_cache + p * 5 * 8);

778 else

779 h->h264dsp.h264_idct_add16(dest_y, block_offset,

780 h->mb + (p * 256 << pixel_shift),

781 linesize,

782 h->non_zero_count_cache + p * 5 * 8);

783 }

784 }

785 } else if (CONFIG_SVQ3_DECODER) {

786 for (i = 0; i < 16; i++)

787 if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) {

788 // FIXME benchmark weird rule, & below

789 uint8_t *const ptr = dest_y + block_offset[i];

790 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize,

791 h->qscale, IS_INTRA(mb_type) ? 1 : 0);

792 }

793 }

794 }

795 }

796

797 #define BITS 8

798 #define SIMPLE 1

799 #include "h264_mb_template.c"

800

801 #undef BITS

802 #define BITS 16

803 #include "h264_mb_template.c"

804

805 #undef SIMPLE

806 #define SIMPLE 0

807 #include "h264_mb_template.c"

808

809 void ff_h264_hl_decode_mb(H264Context *h)

810 {

811 const int mb_xy = h->mb_xy;

812 const int mb_type = h->cur_pic.mb_type[mb_xy];

813 int is_complex = CONFIG_SMALL || h->is_complex ||

814 IS_INTRA_PCM(mb_type) || h->qscale == 0;

815

816 if (CHROMA444(h)) {

817 if (is_complex || h->pixel_shift)

818 hl_decode_mb_444_complex(h);

819 else

820 hl_decode_mb_444_simple_8(h);

821 } else if (is_complex) {

822 hl_decode_mb_complex(h);

823 } else if (h->pixel_shift) {

824 hl_decode_mb_simple_16(h);

825 } else

826 hl_decode_mb_simple_8(h);

827 }

Generated on Sun Mar 8 2015 02:34:52 for FFmpeg by doxygen 1.8.2