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Open source player?

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speachy:

--- Quote from: spaceship9876 on November 17, 2023, 07:33:02 AM ---a possible player for $42: https://www.cnx-software.com/2023/11/16/lilygo-t-display-s3-pro-a-2-33-inch-esp32-s3-color-touchscreen-display-with-enclosure/

--- End quote ---

Unfortunately, The lack of an audio jack and only two physical buttons make this a poor candidate for a DAP.

spaceship9876:
It looks like there might be a new flagship chip from Actions Semi: ATS2158. specs: https://www.actions-semi.com/index.php?c=download&id=2758&siteId=4

The previous flagship audio chip from them was the ATJ2167, here was the specs for that chip: https://voz.vn/attachments/screenshot_20221011-232140-png.1434540/

speachy:

--- Quote from: spaceship9876 on November 21, 2023, 07:17:57 AM ---It looks like there might be a new flagship chip from Actions Semi: ATJ2158. specs: https://www.actions-semi.com/index.php?c=download&id=2758&siteId=4

--- End quote ---

I don't know if I could call this a "flagship" chip; it's not clear from this quick spec sheet this part doesn't have anywhere near enough RAM to implement full Rockbox feature set.  We'd also effectively be forced to run only the codecs the hardware is cabable of handling. Of course, that presumes we'd get usable documentation, someting that Actions Semi has historically not provided.  :)

Also, the ATJ2159 is probably the better choice than the 2158, as it drops the DSP core in favor of a much higher clock speed on the Cortex-M4, plus also supporting more codecs and 24-bit/96KHz operation.  (I suspect the 2158 is intended to be used in noise-canceling headphone appliations)

...Actions did produce SoCs that are capable of running the full rockbox feature set (eg the ATJ213x family) but the 2127/2157/2167 parts are intended for shovelware low-end DAPs.

spaceship9876:
are there any plans for rockbox to support risc-v, if so maybe this would be viable? - https://www.gigadevice.com/product/mcu/risc-v/gd32vw553kmq7

saratoga:

--- Quote from: spaceship9876 on November 21, 2023, 11:36:05 AM ---are there any plans for rockbox to support risc-v, if so maybe this would be viable? - https://www.gigadevice.com/product/mcu/risc-v/gd32vw553kmq7

--- End quote ---

Aside from it being a lot of work, porting to a different ISA is possible and people have done it in the past.  However that device has very little memory and so would not be a good choice.  While you could squeeze into slightly less, anything under 2 MB of RAM is probably not worth it.

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