25 Commits

Author	SHA1	Message	Date
Natalia Portillo	81c367995f	Update recovery footer size and related documentation for AaruRecoveryFooter	2026-04-12 14:17:56 +01:00
Natalia Portillo	eb188f48d2	Add erasure coding structures.	2026-04-11 20:16:18 +01:00
Kevin Bortis	120174e4cd	Add multi-threaded zstd compression support ... Switch zstd encoder from simple API (ZSTD_compress) to advanced API (ZSTD_CCtx + ZSTD_compress2) with configurable worker threads via ZSTD_c_nbWorkers. Consumer controls threading through threads=N option string parameter. Default is 1 (single-threaded, bit-identical output to previous behavior). - Enable ZSTD_MULTITHREAD compile definition and link pthreads - Add num_threads field to options struct and context - Parse threads=N in option string (clamped >= 1) - Rewrite aaruf_zstd_encode_buffer() with num_threads parameter - Update all call sites (write.c, close.c)	2026-03-29 12:56:19 +02:00
Kevin Bortis	6be36b6bda	Add Zstandard compression support ... Implements zstd as an alternative to LZMA for data block and subchannel compression using the allocated compression IDs 4 (kCompressionZstd) and 5 (kCompressionZstdCst). Adds zstd v1.5.7 as a bundled submodule with a static library build including x86_64 assembly fast path for decompression. Write path selects zstd or LZMA based on the zstd option. Subchannel blocks use zstd+CST instead of LZMA+CST when enabled. LZMA properties header is only written for LZMA-based compression types, preventing format corruption in zstd-compressed images. Activated via options string: "zstd=true;zstd_level=19". Default remains LZMA for backwards compatibility. Tested: SHA-256 verified lossless roundtrips across 9 disc systems (Dreamcast, Saturn, Mega CD, PC Engine CD, Neo Geo CD, PS1, PS2 CD, PS2 DVD) and PS1 SBI subchannel preservation with zstd+CST.	2026-03-19 08:45:07 +01:00
Rebecca Wallander	c412030a8b	Use block alignment offset instead of absolute offset	2026-01-01 13:37:21 +01:00
Rebecca Wallander	86b6680e3e	Add data type to datastream block	2026-01-01 13:37:20 +01:00
Rebecca Wallander	65d34b1e9a	Add flux implementation	2026-01-01 13:35:43 +01:00
Natalia Portillo	7f0dea2755	Repurpose two unused header fields to store biggest image sector size.	2025-12-30 20:13:39 +00:00
Natalia Portillo	955789a160	Increase size of negative and overflow sectors in DDT2 to 32-bit.	2025-12-26 09:39:13 +00:00
Natalia Portillo	050810c91d	Update copyright year to 2026.	2025-12-23 08:23:40 +00:00
Natalia Portillo	e2f3323a04	Sync specification with code.	2025-10-11 13:17:26 +01:00
Natalia Portillo	61850a9520	Update DDT entry documentation to indicate 64-bit values	2025-10-11 01:34:22 +01:00
Natalia Portillo	17e1c0f2bd	Set DDTv2 as 64-bit and remove concept of multiple sizes of DDTs.	2025-10-10 02:39:57 +01:00
Natalia Portillo	01152f5c25	Add tape media support with metadata structures and update CMake configuration	2025-10-07 04:17:04 +01:00
Natalia Portillo	4491df8689	Add support for processing Aaru metadata JSON blocks	2025-10-05 05:06:30 +01:00
Natalia Portillo	7313897064	Add parsing and serialization functions for Lisa family disk tags	2025-10-04 01:29:03 +01:00
Natalia Portillo	5c7610c1c0	Use heuristics to setup table shift.	2025-10-02 04:40:16 +01:00
Natalia Portillo	41aee42c53	Enhance documentation for various structures with detailed descriptions and formatting improvements	2025-10-01 05:35:39 +01:00
Natalia Portillo	3b012797cb	Implement creating AaruFormat image and writing header.	2025-08-07 15:43:35 +01:00
Natalia Portillo	4b537e60a9	Define DDT2 header.	2025-08-03 20:48:30 +01:00
Natalia Portillo	5de2fc8f84	Introduce index block version 3 with enhanced fault tolerance and previous block referencing	2025-08-02 01:45:27 +01:00
Natalia Portillo	9a4c04b2ca	Implement support for index v2.	2025-08-01 21:18:48 +01:00
Natalia Portillo	2811f41734	[lib] Fix data size mismatch.	2025-08-01 02:48:16 +01:00
Natalia Portillo	af6e384678	Fix typo in comment.	2025-08-01 02:42:50 +01:00
Natalia Portillo	a8a18cf4d7	[lib] Split structures in separate headers.	2025-08-01 02:41:48 +01:00