| 1344 | } |
| 1345 | |
| 1346 | void LWOImporter::LoadLWO3Envelope(unsigned int length) { |
| 1347 | LE_NCONST uint8_t *const end = mFileBuffer + length; |
| 1348 | AI_LWO_VALIDATE_CHUNK_LENGTH(length, ENVL, 4); |
| 1349 | |
| 1350 | mEnvelopes.emplace_back(); |
| 1351 | LWO::Envelope &envelope = mEnvelopes.back(); |
| 1352 | |
| 1353 | // Get the index of the envelope |
| 1354 | envelope.index = ReadVSizedIntLWO2(mFileBuffer); |
| 1355 | |
| 1356 | // ... and read all blocks |
| 1357 | while (true) { |
| 1358 | if (mFileBuffer + 8 >= end) break; |
| 1359 | LE_NCONST IFF::ChunkHeader head = IFF::LoadChunk(mFileBuffer); |
| 1360 | |
| 1361 | if (mFileBuffer + head.length > end) |
| 1362 | throw DeadlyImportError("LWO3: Invalid envelope chunk length"); |
| 1363 | |
| 1364 | uint8_t *const next = mFileBuffer + head.length; |
| 1365 | switch (head.type) { |
| 1366 | // Type & representation of the envelope |
| 1367 | case AI_LWO_TYPE: |
| 1368 | AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, TYPE, 4); |
| 1369 | mFileBuffer++; // skip user format |
| 1370 | |
| 1371 | // Determine type of envelope |
| 1372 | envelope.type = (LWO::EnvelopeType)*mFileBuffer; |
| 1373 | ++mFileBuffer; |
| 1374 | break; |
| 1375 | |
| 1376 | // precondition |
| 1377 | case AI_LWO_PRE: |
| 1378 | AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, PRE, 4); |
| 1379 | envelope.pre = (LWO::PrePostBehaviour)GetU2(); |
| 1380 | break; |
| 1381 | |
| 1382 | // postcondition |
| 1383 | case AI_LWO_POST: |
| 1384 | AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, POST, 4); |
| 1385 | envelope.post = (LWO::PrePostBehaviour)GetU2(); |
| 1386 | break; |
| 1387 | |
| 1388 | // keyframe |
| 1389 | case AI_LWO_KEY: { |
| 1390 | AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, KEY, 10); |
| 1391 | |
| 1392 | envelope.keys.emplace_back(); |
| 1393 | LWO::Key &key = envelope.keys.back(); |
| 1394 | |
| 1395 | key.time = GetF4(); |
| 1396 | key.value = GetF4(); |
| 1397 | break; |
| 1398 | } |
| 1399 | |
| 1400 | // interval interpolation |
| 1401 | case AI_LWO_SPAN: { |
| 1402 | AI_LWO_VALIDATE_CHUNK_LENGTH(head.length, SPAN, 6); |
| 1403 | if (envelope.keys.size() < 2) |
nothing calls this directly
no test coverage detected