PictureFlow refuses to start on the larger panels in this family with
"Not enough memory for album art cache", no matter how small the
library is.
It is PF_PLAYBACK_CAPABLE here, so it deliberately takes the plugin
buffer instead of stealing the audio buffer in order to keep playback
running. It then gives a quarter of that buffer to its album art cache,
which needs DISPLAY_WIDTH * DISPLAY_HEIGHT * sizeof(pix_t) bytes:
HiBy R1 480x800 -> 400x533 -> 416 KiB
HiBy R3 Pro II 480x720 -> 360x480 -> 338 KiB
Surfans F28 320x480 -> 240x320 -> 150 KiB
A quarter of 512KiB is only 128KiB, so all three fail the check before
they ever look at the library. The rest of the family tops out at
320x240 and needs at most 68KiB, which is why the old value went
unnoticed.
Most hibyos devices only have 32MB of RAM in total, and the OS and its
daemons eat about two thirds of that, so there is nothing spare to hand
out and the buffer stays at 512KiB. The three affected targets happen to
be exactly the 64MB ones, and they are also the only members of the
family configured with MEMORYSIZE >= 16, so key the size off that.
Plugins are dlopen()ed on hosted targets, so pluginbuf is plain BSS and
plugin.lds/DRAMSIZE do not apply.
Change-Id: I38db01231bbb8d139cb2239623a79250e0e46b61
4f6aac445f