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last oda in c

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This commit is contained in:
KubaPro010
2025-12-27 17:54:27 +01:00
parent 4022843662
commit ec4d9a8440
7 changed files with 45 additions and 98 deletions
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50
scripts/1-af.lua
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@@ -3,6 +3,8 @@ _Af_Oda_state = 0
_Af_Oda_len = 0
_Af_Oda_afs = {}
local USERDATA_OFFSET = 270
---@param freq number
---@return table
local function encode_af(freq)
@@ -13,10 +15,10 @@ local function encode_af(freq)
table.insert(out, math.tointeger((freq * 10) - 384))
elseif freq >= 153 and freq <= 279 then
table.insert(out, 250) -- LFMF incoming
table.insert(out, (freq - 153) / 9 + 1)
table.insert(out, math.tointeger((freq - 153) / 9 + 1))
elseif freq >= 531 and freq <= 1602 then
table.insert(out, 250) -- LFMF incoming
table.insert(out, (freq - 531) / 9 + 16)
table.insert(out, math.tointeger((freq - 531) / 9 + 16))
end
return out
end
@@ -61,9 +63,16 @@ local function init_af_oda()
end
end
---Sets the AFs included in the ODA
---@param afs table List of numbers (e.g., {98.1, 102.5})
function set_rds_af_oda(afs)
local function save_af_to_userdata(afs)
local count = #afs
if count > 25 then count = 25 end
local payload = string.pack("B", count)
for i = 1, count do payload = payload .. string.pack("f", afs[i]) end
set_userdata_offset(USERDATA_OFFSET, #payload, payload)
end
local function _process_af_list(afs)
_Af_Oda_afs = {}
_Af_Oda_len = #afs
for _, f in ipairs(afs) do
@@ -73,9 +82,36 @@ function set_rds_af_oda(afs)
end
end
_Af_Oda_state = 0
if _Af_Oda_id == nil then init_af_oda() end
init_af_oda()
end
local function load_af_from_userdata()
local header = get_userdata_offset(USERDATA_OFFSET, 1)
if header == "" or header == nil then return end
local count = string.unpack("B", header)
if count == 0 or count > 25 then return end
local data = get_userdata_offset(USERDATA_OFFSET + 1, count * 4)
if #data < (count * 4) then return end
local afs = {}
for i = 1, count do
local val = string.unpack("f", data, (i-1)*4 + 1)
table.insert(afs, val)
end
_process_af_list(afs)
end
---Sets the AFs included in the ODA and saves them
---@param afs table List of numbers (e.g., {98.1, 102.5})
function set_rds_af_oda(afs)
_process_af_list(afs)
save_af_to_userdata(afs)
end
function on_state()
init_af_oda()
load_af_from_userdata()
if _Af_Oda_len ~= 0 then init_af_oda() end
end