A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1--[[
2/***************************************************************************
3 * __________ __ ___.
4 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
5 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
6 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
7 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
8 * \/ \/ \/ \/ \/
9 * $Id$
10 *
11 * Copyright (C) 2017 William Wilgus
12 *
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License
15 * as published by the Free Software Foundation; either version 2
16 * of the License, or (at your option) any later version.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ****************************************************************************/
22]]
23if ... == nil then rb.splash(rb.HZ * 3, "use 'require'") end
24require("printtable")
25local _clr = require("color")
26local _lcd = require("lcd")
27local _print = require("print")
28local _timer = require("timer")
29
30require("actions")
31local CANCEL_BUTTON = rb.actions.PLA_CANCEL
32--------------------------------------------------------------------------------
33-- builds an index of byte position of every line at each bufsz increment
34-- in filename; bufsz == 1 would be every line; saves to filename.ext.idx_ext
35-- lnbyte should be nil for text files and number of bytes per line for binary
36local function build_file_index(filename, idx_ext, bufsz, lnbyte)
37
38 if not filename then return end
39 local file = io.open('/' .. filename, "r") --read
40 if not file then _lcd:splashf(100, "Can't open %s", filename) return end
41 local fsz = file:seek("end")
42 local fsz_kb = fsz / 1024
43 local count
44 local ltable = {0} --first index is the beginning of the file
45 local timer = _timer()
46 local fread
47 _lcd:splashf(100, "Indexing file %d Kb", (fsz / 1024))
48
49 if lnbyte then
50 fread = function(f) return f:read(lnbyte) end
51 else
52 lnbyte = -1
53 fread = function(f) return f:read("*l") end
54 end
55
56 file:seek("set", 0)
57 for i = 1, fsz do
58 if i % bufsz == 0 then
59 local loc = file:seek()
60 ltable[#ltable + 1] = loc
61 _lcd:splashf(1, "Parsing %d of %d Kb", loc / 1024, fsz_kb)
62 end
63 if rb.get_plugin_action(0) == CANCEL_BUTTON then
64 return
65 end
66 if not fread(file) then
67 count = i
68 break
69 end
70 end
71
72 local fileidx = io.open('/' .. filename .. idx_ext, "w+") -- write/erase
73 if fileidx then
74 fileidx:write(fsz .. "\n")
75 fileidx:write(count .. "\n")
76 fileidx:write(bufsz .. "\n")
77 fileidx:write(lnbyte .. "\n")
78 fileidx:write(table.concat(ltable, "\n"))
79 fileidx:close()
80 _lcd:splashf(100, "Finished in %d seconds", timer.stop() / rb.HZ)
81 collectgarbage("collect")
82 else
83 error("unable to save index file")
84 end
85end -- build_file_index
86--------------------------------------------------------------------------------
87
88--- returns size of original file, total lines buffersize, and table filled
89-- with line offsets in index file -> filename
90local function load_index_file(filename)
91 local filesz, count, bufsz, lnbyte
92 local ltable
93 local fileidx = io.open('/' .. filename, "r") --read
94 if fileidx then
95 local idx = -3
96 ltable = {}
97 fileidx:seek("set", 0)
98 for line in fileidx:lines() do
99 if idx == -3 then
100 filesz = tonumber(line)
101 elseif idx == -2 then
102 count = tonumber(line)
103 elseif idx == -1 then
104 bufsz = tonumber(line)
105 elseif idx == 0 then
106 lnbyte = tonumber(line)
107 else
108 ltable[idx] = tonumber(line)
109 end
110 idx = idx + 1
111 end
112 fileidx:close()
113 end
114 return lnbyte, filesz, count, bufsz, ltable
115end -- load_index_file
116--------------------------------------------------------------------------------
117
118-- creates a fixed index with fixed line lengths, perfect for viewing hex files
119-- not so great for reading text files but works as a fallback
120local function load_fixed_index(bytesperline, filesz, bufsz)
121 local lnbyte = bytesperline
122 local count = (filesz + lnbyte - 1) / lnbyte + 1
123 local idx_t = {} -- build index
124 for i = 0, filesz, bufsz do
125 idx_t[#idx_t + 1] = lnbyte * i
126 end
127 return lnbyte, filesz, count, bufsz, idx_t
128end -- load_fixed_index
129--------------------------------------------------------------------------------
130
131-- uses print_table to display a whole file
132function print_file(filename, maxlinelen, settings)
133
134 if not filename then return end
135 local file = io.open('/' .. filename or "", "r") --read
136 if not file then _lcd:splashf(100, "Can't open %s", filename) return end
137 maxlinelen = 33
138 local hstr = filename
139 local ftable = {}
140 table.insert(ftable, 1, hstr)
141
142 local tline = #ftable + 1
143 local remln = maxlinelen
144 local posln = 1
145
146 for line in file:lines() do
147 if line then
148 if maxlinelen then
149 if line == "" then
150 ftable[tline] = ftable[tline] or ""
151 tline = tline + 1
152 remln = maxlinelen
153 else
154 line = line:match("%w.+") or ""
155 end
156 local linelen = line:len()
157 while linelen > 0 do
158
159 local fsp = line:find("%s", posln + remln - 5) or 0x0
160 fsp = fsp - (posln + remln)
161 if fsp >= 0 then
162 local fspr = fsp
163 fsp = line:find("%s", posln + remln) or linelen
164 fsp = fsp - (posln + remln)
165 if math.abs(fspr) < fsp then fsp = fspr end
166 end
167 if fsp > 5 or fsp < -5 then fsp = 0 end
168
169 local str = line:sub(posln, posln + remln + fsp)
170 local slen = str:len()
171 ftable[tline] = ftable[tline] or ""
172 ftable[tline] = ftable[tline] .. str
173 linelen = linelen - slen
174 if linelen > 0 then
175 tline = tline + 1
176 posln = posln + slen
177 remln = maxlinelen
178 --loop continues
179 else
180 ftable[tline] = ftable[tline] .. " "
181 remln = maxlinelen - slen
182 posln = 1
183 --loop ends
184 end
185
186 end
187 else
188 ftable[#ftable + 1] = line
189 end
190
191
192 end
193 end
194
195 file:close()
196
197 _lcd:clear()
198 _print.clear()
199
200 if not settings then
201 settings = {}
202 settings.justify = "center"
203 settings.wrap = true
204 settings.msel = true
205 end
206 settings.hasheader = true
207 settings.co_routine = nil
208 settings.ovfl = "manual"
209
210 local sel =
211 print_table(ftable, #ftable, settings)
212
213 _lcd:splashf(rb.HZ * 2, "%d items {%s}", #sel, table.concat(sel, ", "))
214 ftable = nil
215end -- print_file
216--------------------------------------------------------------------------------
217
218-- uses print_table to display a portion of a file
219function print_file_increment(filename, settings)
220
221 if not filename then return end
222 local file = io.open('/' .. filename, "r") --read
223 if not file then _lcd:splashf(100, "Can't open %s", filename) return end
224 local fsz = file:seek("end")
225 local bsz = 1023
226 --if small file do it the easier way and load whole file to table
227 if fsz < 60 * 1024 then
228 file:close()
229 print_file(filename, settings)
230 return
231 end
232
233 local ext = ".idx"
234 local lnbyte, filesz, count, bufsz, idx_t = load_index_file(filename .. ext)
235
236 if not idx_t or fsz ~= filesz then -- build file index
237 build_file_index(filename, ext, bsz)
238 lnbyte, filesz, count, bufsz, idx_t = load_index_file(filename .. ext)
239 end
240
241 -- if invalid or user canceled creation fallback to a fixed index
242 if not idx_t or fsz ~= filesz or count <= 0 then
243 _lcd:splashf(rb.HZ * 5, "Unable to read file index %s", filename .. ext)
244 lnbyte, filesz, count, bufsz, idx_t = load_fixed_index(32, fsz, bsz)
245 end
246
247 if not idx_t or fsz ~= filesz or count <= 0 then
248 _lcd:splashf(rb.HZ * 5, "Unable to load file %s", filename)
249 return
250 end
251
252 local hstr = filename
253 local file_t = setmetatable({},{__mode = "kv"}) --weak keys and values
254 -- this allows them to be garbage collected as space is needed
255 -- rebuilds when needed
256 local ovf = 0
257 local lpos = 1
258 local timer = _timer()
259 file:seek("set", 0)
260
261 function print_co()
262 while true do
263 collectgarbage("step")
264 file_t[1] = hstr --position 1 is ALWAYS header/title
265
266 for i = 1, bufsz + ovf do
267 file_t[lpos + i] = file:read ("*l")
268 end
269 ovf = 0
270 lpos = lpos + bufsz
271
272 local bpos = coroutine.yield()
273
274 if bpos <= lpos then -- roll over or scroll up
275 bpos = (bpos - bufsz) + bpos % bufsz
276 timer:check(true)
277 end
278
279 lpos = bpos - bpos % bufsz
280
281 if lpos < 1 then
282 lpos = 1
283 elseif lpos > count - bufsz then -- partial fill
284 ovf = count - bufsz - lpos
285 end
286 --get position in file of the nearest indexed line
287 file:seek("set", idx_t[bpos / bufsz + 1])
288
289 -- on really large files if it has been more than 10 minutes
290 -- since the user scrolled up the screen wipe out the prior
291 -- items to free memory
292 if lpos % 5000 == 0 and timer:check() > rb.HZ * 600 then
293 for i = 1, lpos - 100 do
294 file_t[i] = nil
295 end
296 end
297
298 end
299 end
300
301 co = coroutine.create(print_co)
302 _lcd:clear()
303 _print.clear()
304
305 if not settings then
306 settings = {}
307 settings.justify = "center"
308 settings.wrap = true
309 end
310 settings.hasheader = true
311 settings.co_routine = co
312 settings.msel = false
313 settings.ovfl = "manual"
314
315 table.insert(file_t, 1, hstr) --position 1 is header/title
316 local sel =
317 print_table(file_t, count, settings)
318 file:close()
319 idx_t = nil
320 file_t = nil
321 return sel
322end --print_file_increment
323--------------------------------------------------------------------------------
324function print_file_hex(filename, bytesperline, settings)
325
326 if not filename then return end
327 local file = io.open('/' .. filename, "r") --read
328 if not file then _lcd:splashf(100, "Can't open %s", filename) return end
329 local hstr = filename
330 local bpl = bytesperline
331 local fsz = file:seek("end")
332--[[
333 local filesz = file:seek("end")
334 local bufsz = 1023
335 local lnbyte = bytesperline
336 local count = (filesz + lnbyte - 1) / lnbyte + 1
337
338 local idx_t = {} -- build index
339 for i = 0, filesz, bufsz do
340 idx_t[#idx_t + 1] = lnbyte * i
341 end]]
342
343 local lnbyte, filesz, count, bufsz, idx_t = load_fixed_index(bpl, fsz, 1023)
344
345 local file_t = setmetatable({},{__mode = "kv"}) --weak keys and values
346 -- this allows them to be garbage collected as space is needed
347 -- rebuilds when needed
348 local ovf = 0
349 local lpos = 1
350 local timer = _timer()
351 file:seek("set", 0)
352
353 function hex_co()
354 while true do
355 collectgarbage("step")
356 file_t[1] = hstr --position 1 is ALWAYS header/title
357
358 for i = 1, bufsz + ovf do
359 local pos = file:seek()
360 local s = file:read (lnbyte)
361 if not s then -- EOF
362 file_t[lpos + i] = ""
363 break;
364 end
365 local s_len = s:len()
366
367 if s_len > 0 then
368 local fmt = "0x%04X: " .. string.rep("%02X ", s_len)
369 local schrs = " " .. s:gsub("(%c)", " . ")
370 file_t[lpos + i] = string.format(fmt, pos, s:byte(1, s_len)) ..
371 schrs
372 else
373 file_t[lpos + i] = string.format("0x%04X: ", pos)
374 end
375 end
376 ovf = 0
377 lpos = lpos + bufsz
378
379 local bpos = coroutine.yield()
380
381 if bpos < lpos then -- roll over or scroll up
382 bpos = (bpos - bufsz) + bpos % bufsz
383 timer:check(true)
384 end
385
386 lpos = bpos - bpos % bufsz
387
388 if lpos < 1 then
389 lpos = 1
390 elseif lpos > count - bufsz then -- partial fill
391 ovf = count - bufsz - lpos
392 end
393 --get position in file of the nearest indexed line
394 file:seek("set", idx_t[bpos / bufsz + 1])
395
396 -- on really large files if it has been more than 10 minutes
397 -- since the user scrolled up the screen wipe out the prior
398 -- items to free memory
399 if lpos % 10000 == 0 and timer:check() > rb.HZ * 600 then
400 for i = 1, lpos - 100 do
401 file_t[i] = nil
402 end
403 end
404
405 end
406 end
407
408 co = coroutine.create(hex_co)
409
410 local function repl(char)
411 local ret = ""
412 if char:sub(1,2) == "0x" then
413 return string.format("%dd:", tonumber(char:sub(3, -2), 16))
414 else
415 return string.format("%03d ", tonumber(char, 16))
416 end
417 end
418
419
420 _lcd:clear()
421 _print.clear()
422
423 local sel, start, vcur = 1
424 table.insert(file_t, 1, hstr) --position 1 is header/title
425
426 if not settings then
427 settings = {}
428 settings.justify = "left"
429 settings.wrap = true
430 settings.msel = false
431 settings.hfgc = _clr.set( 0, 000, 000, 000)
432 settings.hbgc = _clr.set(-1, 255, 255, 255)
433 settings.ifgc = _clr.set(-1, 255, 255, 255)
434 settings.ibgc = _clr.set( 0, 000, 000, 000)
435 settings.iselc = _clr.set( 1, 000, 200, 100)
436 end
437
438 settings.hasheader = true
439 settings.co_routine = co
440 settings.start = start
441 settings.curpos = vcur
442 settings.ovfl = "manual"
443
444 while sel > 0 do
445 settings.start = start
446 settings.curpos = vcur
447
448 sel, start, vcur = print_table(file_t, count, settings)
449
450 if sel > 1 and file_t[sel] then -- flips between hex and decimal
451 local s = file_t[sel]
452 if s:sub(-1) == "\b" then
453 file_t[sel] = nil
454 ovf = -(bufsz - 1)
455 coroutine.resume(co, sel) --rebuild this item
456 else
457 s = s:gsub("(0x%x+:)", repl) .. "\b"
458 file_t[sel] = s:gsub("(%x%x%s)", repl) .. "\b"
459 end
460 end
461 end
462
463 file:close()
464 idx_t = nil
465 file_t = nil
466 return sel
467end -- print_file_hex
468--------------------------------------------------------------------------------