1.8 KiB
Files:- 27 -> This one uses the old format of specifying a variable block strategy. Look into it. The way to know the blocking strategy for this old format FLACs is to see if min_block_size and max_block_size are different, if they are, then the blocking strategy is VARIABLE, if not, then it's FIXED. 44 -> High memory and CPU usage. needs optimization.
uncommon/01 -> This one decodes fine but the expected MD5 is 0x00 * 16 which doesn't match the calculated MD5. not sure what to do about this. uncommon/02 -> No MD5 uncommon/03 -> No MD5 uncommon/04 -> We get a bits per sample mismatch uncommon/10 -> We error with Invalid Signature. I assume for these two I should look for the frame sync bits. But maybe my decoder should reject these. idk. uncommon/11 -> We error with Invalid Signature
faulty/01 -> This one works when it shouldn't (Wrong max blocksize) faulty/02 -> This one works when it shouldn't (Wrong max framesize) faulty/04 -> This one works when it shouldn't. This one has a wrong number of channels (whatever that means) faulty/05 -> This one works when it shouldn't. (Wrong number of samples) faulty/08 -> This one works when it shouldn't. (Blocksize 65536, exceeds the allowed max of 65535) faulty/09 -> This one works when it shouldn't. (Blocksize 1, below the allowed min of 16 (last frame(subframe?) is allowed to have less than 16))
Things:- [ ] Lots of checks (look at the TODOs in flac.odin) [ ] Memory optimizations [ ] Speed optimizations [ ] Seeking [x] RICE2 [x] Add check for mismatched bits per sample [x] Unencoded BPS is zero [x] CONSTANT subframe [x] Stereo Decorrelation [x] MD5 checksums - [x] VERBATIM subframe - [x] CONSTANT subframe - [x] FIXED subframe - [x] LPC subframe
[ ] Encoder (low priority for now)
Security:- Security concerns will be considered after making the decoder work correctly and robustly.