libretroadmin f62d495d2d CHD: decode ahead per stream, so CD audio and data do not collide ...

A CHD was read through one decoded hunk and a thread that decoded one
hunk ahead. A game that plays CD audio while it streams data reads the
two from different places a sector at a time, so each threw out the
other's hunk and aimed the thread away from it, and the hunks were
decoded on the emulation thread: a stutter a GDI never shows.

Each stream (data tracks, audio tracks) now reads through its own
libretro-common vfs_prefetch, whose thread decodes the hunks ahead on an
image handle of its own, one window per hunk; sectors are lent from the
windows in place, and a read command's Prefetch() sets the data
stream's thread going before the first sector is asked for. The core
defines HAVE_THREADS where it builds threads, so the prefetcher is not
compiled to stubs. tools/chd/chd_streams_test, run from tools/chd/run.sh
and now in CI, reads audio and data at once and fails when the reading
thread does the decoding.

2026-10-26 14:49:16 +01:00

..

Android.mk

CHD: decode ahead per stream, so CD audio and data do not collide

2026-10-26 14:49:16 +01:00

Application.mk

Android: API 21, and the interpreters on 32-bit x86

2026-10-23 06:44:02 +02:00