codec: sid: use cRSID as a library for playing SID files

Change-Id: Iee70933e47ff8df8f26c9a63112de4da4a8e6c17

1 files changed, 19 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/cRSID/README.rockbox b/lib/rbcodec/codecs/cRSID/README.rockbox
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+Some notes about cRSID usage in Rockbox
+by Ninja (Wolfram Sang) in 2023
+
+The cRSID codebase is from v1.0. The only change made was a separation of the
+cRSID header into a public and private one, so it could be compiled as a
+library. You can find it as a separate commit in the git repository. This
+likely needs to be updated whenever a newer version of cRSID shall be used.
+
+Currently, newer versions of cRSID are available but they have been discarded.
+v1.1 mainly adds a high quality playback mode using 7x oversampling. This is
+too much for a Sansa Clip. Because the old playback mode still exists, it might
+be possible to add a runtime option to let the user choose. As a first step
+however, it was decided to give the user a working codec without having to deal
+with options. v1.2 mainly adds a SDL-based GUI player, no bigger changes in SID
+emulation. Staying with v1.0 also keeps the codec size significantly lower
+(~50KB for v1.0 vs ~90KB for v1.2 on the Sansa Clip).
+
+cRSID Releases can be found here:
+https://csdb.dk/search/?seinsel=releases&search=crsid