107 lines
2.7 KiB
Lua
107 lines
2.7 KiB
Lua
 
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local ffi = require "ffi"
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local encoding = require "accessibility.vendor.love2talk.encoding"
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ffi.cdef[[
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void Tolk_Load();
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void Tolk_Output(const char *s, bool interrupt);
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void Tolk_Silence();
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void Tolk_Speak(const char *s, bool interrupt);
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void Tolk_Braille(const char *s, bool interrupt);
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void Tolk_TrySAPI(bool try);
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void Tolk_PreferSAPI(bool prefer);
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const wchar_t * Tolk_DetectScreenReader();
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bool Tolk_HasSpeech();
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bool Tolk_HasBraille();
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bool Tolk_IsSpeaking();]]
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-- LOCAL MODIFICATION: load Tolk from the mod's own lib/ directory.
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--
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-- ffi.load() goes through the Windows loader, which does not know about LOVE's
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-- virtual filesystem. Upstream relies on Tolk.dll sitting next to love.exe, which
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-- needs admin rights to arrange. Instead we resolve the real OS path via
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-- love.filesystem.getSource() and load by absolute path.
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--
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-- Tolk.dll in turn loads the screen-reader clients (nvdaControllerClient64.dll,
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-- SAAPI64.dll) itself, and those go through the normal search order — so we must
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-- also add our directory to the DLL search path via SetDllDirectory, or Tolk would
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-- load but find no screen reader and silently fall back to SAPI.
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local function loadTolk()
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local ok, source = pcall(function()
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return love.filesystem.getSource()
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end)
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if ok and source then
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local libDir = source .. "\\accessibility\\lib"
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pcall(function()
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ffi.cdef [[ int SetDllDirectoryA(const char *lpPathName); ]]
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ffi.C.SetDllDirectoryA(libDir)
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end)
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local loaded, handle = pcall(ffi.load, libDir .. "\\Tolk.dll")
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if loaded then
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return handle
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end
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end
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-- Fall back to the normal search order: next to love.exe, or on PATH.
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return ffi.load("Tolk")
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end
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local tolk = loadTolk()
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tolk.Tolk_Load()
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local function output(s, interrupt)
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interrupt=interrupt or false
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tolk.Tolk_Output(encoding.to_utf16(s), interrupt)
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end
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local function speak(s, interrupt)
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interrupt=interrupt or false
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tolk.Tolk_Speak(encoding.to_utf16(s), interrupt)
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end
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local function braille(s)
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tolk.Tolk_Braille(encoding.to_utf16(s))
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end
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local function silence()
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tolk.Tolk_Silence()
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end
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local function trySAPI(try)
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tolk.Tolk_TrySAPI(try)
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end
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local function preferSAPI(prefer)
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tolk.Tolk_PreferSAPI(prefer)
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end
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local function isSpeaking()
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return tolk.Tolk_IsSpeaking()
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end
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local function detectScreenReader()
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--todo, need to convert the returned value to something Lua likes
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end
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local function hasSpeech()
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return tolk.Tolk_HasSpeech()
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end
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local function hasBraille()
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return tolk.Tolk_HasBraille()
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end
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return {
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output=output,
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speak=speak,
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braille=braille,
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silence=silence,
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isSpeaking=isSpeaking,
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trySAPI=trySAPI,
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preferSAPI=preferSAPI,
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detectScreenReader=detectScreenReader,
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hasSpeech=hasSpeech,
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hasBraille=hasBraille}
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