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Fix non-integer coordinates passed to ImageData:mapPixel/setPixel/getPixel and SoundData:set/getSample.

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LuaJIT does interesting things when you index into a FFI array using a non-integer value.
This commit is contained in:
Alex Szpakowski
2016-10-24 18:14:09 -03:00
parent d57ce8ae73
commit ff53e8fe71
2 changed files with 17 additions and 0 deletions
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src/modules/sound/wrap_SoundData.lua
+5
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@@ -35,6 +35,7 @@ local status, ffi = pcall(require, "ffi")
if not status then return end
local tonumber, assert, error = tonumber, assert, error
local floor = math.floor
local float = ffi.typeof("float")
local datatypes = {ffi.typeof("uint8_t *"), ffi.typeof("int16_t *")}
@@ -77,6 +78,8 @@ local objectcache = setmetatable({}, {
function SoundData:getSample(i)
if type(i) ~= "number" then error("bad argument #1 to SoundData:getSample (expected number)", 2) end
i = floor(i)
local p = objectcache[self]
if not (i >= 0 and i < p.size/p.bytedepth) then
@@ -96,6 +99,8 @@ function SoundData:setSample(i, sample)
if type(i) ~= "number" then error("bad argument #1 to SoundData:setSample (expected number)", 2) end
if type(sample) ~= "number" then error("bad argument #2 to SoundData:setSample (expected number)", 2) end
i = floor(i)
local p = objectcache[self]
if not (i >= 0 and i < p.size/p.bytedepth) then