| 1332 | } |
| 1333 | |
| 1334 | static void decode_delta_e(uint8_t *dst, |
| 1335 | const uint8_t *buf, const uint8_t *buf_end, |
| 1336 | int w, int flag, int bpp, int dst_size) |
| 1337 | { |
| 1338 | int planepitch = FFALIGN(w, 16) >> 3; |
| 1339 | int pitch = planepitch * bpp; |
| 1340 | int planepitch_byte = (w + 7) / 8; |
| 1341 | unsigned entries, ofssrc; |
| 1342 | GetByteContext gb, ptrs; |
| 1343 | PutByteContext pb; |
| 1344 | int k; |
| 1345 | |
| 1346 | if (buf_end - buf <= 4 * bpp) |
| 1347 | return; |
| 1348 | |
| 1349 | bytestream2_init_writer(&pb, dst, dst_size); |
| 1350 | bytestream2_init(&ptrs, buf, bpp * 4); |
| 1351 | |
| 1352 | for (k = 0; k < bpp; k++) { |
| 1353 | ofssrc = bytestream2_get_be32(&ptrs); |
| 1354 | |
| 1355 | if (!ofssrc) |
| 1356 | continue; |
| 1357 | |
| 1358 | if (ofssrc >= buf_end - buf) |
| 1359 | continue; |
| 1360 | |
| 1361 | bytestream2_init(&gb, buf + ofssrc, buf_end - (buf + ofssrc)); |
| 1362 | |
| 1363 | entries = bytestream2_get_be16(&gb); |
| 1364 | while (entries && bytestream2_get_bytes_left(&gb) >= 6) { |
| 1365 | int16_t opcode = bytestream2_get_be16(&gb); |
| 1366 | unsigned offset = bytestream2_get_be32(&gb); |
| 1367 | |
| 1368 | bytestream2_seek_p(&pb, (offset / planepitch_byte) * pitch + (offset % planepitch_byte) + k * planepitch, SEEK_SET); |
| 1369 | if (opcode >= 0) { |
| 1370 | uint16_t x = bytestream2_get_be16(&gb); |
| 1371 | while (opcode && bytestream2_get_bytes_left_p(&pb) > 0) { |
| 1372 | bytestream2_put_be16(&pb, x); |
| 1373 | bytestream2_skip_p(&pb, pitch - 2); |
| 1374 | opcode--; |
| 1375 | } |
| 1376 | } else { |
| 1377 | opcode = -opcode; |
| 1378 | while (opcode && bytestream2_get_bytes_left(&gb) > 0) { |
| 1379 | bytestream2_put_be16(&pb, bytestream2_get_be16(&gb)); |
| 1380 | bytestream2_skip_p(&pb, pitch - 2); |
| 1381 | opcode--; |
| 1382 | } |
| 1383 | } |
| 1384 | entries--; |
| 1385 | } |
| 1386 | } |
| 1387 | } |
| 1388 | |
| 1389 | static void decode_delta_l(uint8_t *dst, |
| 1390 | const uint8_t *buf, const uint8_t *buf_end, |
no test coverage detected