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This reverts commit 960d776dfcd5d2f071107be1ff08b1a16d275a3f.
This is now handled in custom SDL, so each emulator doesn't need to
handle it.
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This reverts commit fb7ca09b019248b9a0aba481ea55386f71053d73.
It seems that commit broke rolling in Minish Cap when using the ARM dynarec.
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This checks for USB hotplugging every 60 times audio is written. This
can be adjusted to favor performance vs reacting to hotplugs more quickly.
There are some errors that appear when unplugging the headset because
it tries to write audio to a device that has disappeared.
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Thanks to drowsnug for the original implementation of a subpixel
scaler. This scaler uses the core of that one, but smooths the
transition in the new pixels added during scaling.
If you think of the scaler as 4x integer scaling of the GBA screen,
and assigning each of those pixels to a subpixel, each subpixel takes
the value of 50% the pixel assigned, 25% of the pixel to its left, and
25% of the pixel to its right.
With the pixels:
BGRBGRBGRBGR
AAAABBBBCCCC
^--- this subpixel will be 1/4 A[G] + 1/2 B[G] + 1/4 B[G]
The first and last pixels in each batch are not blended with the
previous / next batch to keep them sharp.
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If an official BIOS exists in the right place, it will be
used. Otherwise, the built-in BIOS will be used.
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Implements:
- fast-forward (toggle)
- audio-buffer-based frameskip and frame limiting
- color-correction (using the libretro code)
- lcd ghosting (using the libretro code)
- FPS display
- input rebinding
- emulator key rebinding
- scaling (with the old gpsp filters and drowsnug's scaled-nofilter)
- saving and savestates
- game-specific configuration
Not yet implemented:
- cheats
- fast-forward (hold)
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