Remove support for the HTC-specific "firmware" update command and the
corresponding edify function write_firmware_update(). This
functionality is now done by an edify extension library that lives in
vendor/htc.
Change-Id: I80858951ff10ed8dfff98aefb796bef009e05efb
Instead of six separate images for the left end, right end, and tiled
center portion of the full and empty progress bars, just use two
images: a full bar and an empty bar. Draw the left side of the full
bar and the right side of the empty one, moving the boundary rightward
to "fill" the bar. This makes recovery trivially smaller, and allows
fancier images to be used as progress bars.
Support paletted PNG images as resources.
If the a recovery icon file is so short that we can't even read the
8-byte header, put a message in the log but not on the device screen.
We intentionally have zero-length files for some icons on some devices,
if they're never shown (eg, the firmware installation icons are only
used on HTC devices).
gcc 4.4 complains about some of the recovery ui functions not being
declared. To include the header, we have to fix the 'volatile'
declaration (otherwise there's a compiler error).
Move the dream-specific images to vendor/htc/dream, make the default
images a generic phone.
Take some device-specific details of the recovery UI (eg, what keys to
press to bring up the interface and perform actions, exact text of the
menu, etc.) and split them out into separate C functions. Arrange to
take implementations of those functions from the appropriate vendor
directory at build time. Provide a default implementation in case no
vendor-specific one is available.
