1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
-- Pure Data (Pd) external for remote-controlling the SoundScape Renderer (SSR)
-- Matthias Geier, Sept. 2014
local SsrClient = pd.Class:new():register("legacy_ssrclient")
-- XML parser from http://github.com/Phrogz/SLAXML
local SLAXML = require("slaxml")
function SsrClient:output_command()
-- first part of command becomes the selector, the rest atoms
self:outlet(1, self.command[1], {select(2, unpack(self.command))})
self.command = {}
end
function SsrClient:backup_command()
self.command_backup = {}
for k, v in ipairs(self.command) do
self.command_backup[k] = v
end
end
function SsrClient:restore_command()
self.command = {}
for k, v in ipairs(self.command_backup) do
self.command[k] = v
end
end
-- init stuff and set up callbacks for XML parser
function SsrClient:initialize(name, atoms)
self.inlets = 2
self.outlets = 2
self.buffer = {}
self.command = {}
self.parser = SLAXML:parser{
startElement = function(name, nsURI, nsPrefix)
if name == "update" then
-- not checked
elseif name == "source" then
self.command = {"src"}
elseif name == "reference" then
self.command = {"ref"}
self:backup_command()
elseif name == "loudspeaker" then
self.command = {"ls"}
self:backup_command()
elseif name == "transport" then
self.command = {"transport"}
elseif name == "volume" then
table.insert(self.command, "vol")
elseif name == "file" then
self:restore_command()
table.insert(self.command, "file")
elseif name == "port" then
self:restore_command()
table.insert(self.command, "port")
elseif name == "position" then
self:restore_command()
table.insert(self.command, "pos")
elseif name == "orientation" then
self:restore_command()
table.insert(self.command, "azi")
elseif name == "state" or name == "scene" then
-- these strings don't become part of the message
self:backup_command()
else
self:error(name .. " is ignored")
end
end,
attribute = function(name, value, nsURI, nsPrefix)
if name == "id" then
table.insert(self.command, tonumber(value))
self:backup_command()
elseif name == "x" then
table.insert(self.command, tonumber(value))
elseif name == "y" then
table.insert(self.command, tonumber(value))
self:output_command()
elseif name == "azimuth" then
table.insert(self.command, tonumber(value))
self:output_command()
elseif name == "name" or name == "model" or name == "transport" then
self:restore_command()
table.insert(self.command, name)
table.insert(self.command, value)
self:output_command()
elseif name == "mute" or name == "fixed" then
self:restore_command()
table.insert(self.command, name)
if value == "true" or value == "1" then
table.insert(self.command, 1)
elseif value == "false" or value == "0" then
table.insert(self.command, 0)
else
self:error("invalid value for mute: " .. value)
end
self:output_command()
elseif name == "length" or name == "file_length" or
name == "level" then
self:restore_command()
table.insert(self.command, name)
table.insert(self.command, tonumber(value))
self:output_command()
elseif name == "volume" then
self:restore_command()
table.insert(self.command, "vol")
table.insert(self.command, tonumber(value))
self:output_command()
elseif name == "channel" then
self:restore_command()
table.insert(self.command, "file_channel")
table.insert(self.command, tonumber(value))
self:output_command()
self:restore_command()
table.insert(self.command, "file")
elseif name == "output_level" then
self:restore_command()
table.insert(self.command, "weights")
for weight in value:gmatch("%S+") do
table.insert(self.command, tonumber(weight))
end
self:output_command()
else
self:error("ignored attribute: " .. name .. " value: " .. value)
end
end,
closeElement = function(name, nsURI)
-- nothing
end,
text = function(text)
if self.command[1] == "vol" then
table.insert(self.command, tonumber(text))
else
table.insert(self.command, text)
end
self:output_command()
end,
comment = function(content)
self:error("No comment allowed in XML string")
end,
pi = function(target, content)
self:error("No processing instructions allowed in XML string")
end,
}
return true
end
-- create XML string and send it out as list of ASCII numbers
function SsrClient:in_1(sel, atoms)
local str = '<request>'
if sel == "src" then
str = str .. '<source id="' .. atoms[1] .. '"'
local subcommand = atoms[2]
if subcommand == "pos" then
str = str .. '><position x="' .. atoms[3] ..
'" y="' .. atoms[4] .. '"/></source>'
elseif subcommand == "azi" then
str = str .. '><orientation azimuth="' .. atoms[3] .. '"/></source>'
elseif subcommand == "model" then
str = str .. ' model="' .. atoms[3] .. '"/>'
elseif subcommand == "mute" then
local mute_str
if atoms[3] == 0 then
mute_str = "false"
else
mute_str = "true"
end
str = str .. ' mute="' .. mute_str .. '"/>'
elseif subcommand == "gain" then
self:error('"gain" not supported, use "vol"')
return
else
self:error(subcommand .. " not supported")
return
end
elseif sel == "ref" then
str = str .. '<reference'
local subcommand = atoms[1]
if subcommand == "pos" then
str = str .. '><position x="' .. atoms[2] ..
'" y="' .. atoms[3] .. '"/></reference>'
elseif subcommand == "azi" then
str = str .. '><orientation azimuth="' .. atoms[2] ..
'"/></reference>'
else
self:error(subcommand .. " not supported")
return
end
elseif sel == "state" then
str = str .. '<state ' .. atoms[1] .. '="' .. atoms[2] .. '"/>'
else
self:error(sel .. " not (yet?) supported")
return
end
str = str .. '</request>\0' -- terminated with a binary zero
self:outlet(2, "send", {str:byte(1, #str)}) -- convert to ASCII numbers
end
-- collect numbers in self.buffer. If a zero comes in, parse the whole string.
function SsrClient:in_2_float(f)
if f == 0 then
self.parser:parse(table.concat(self.buffer), {stripWhitespace=true})
self.buffer = {}
else
-- convert ASCII numbers to strings and append to self.buffer
table.insert(self.buffer, string.char(f))
end
end
-- convert list to individual floats
function SsrClient:in_2_list(atoms)
for _, f in ipairs(atoms) do self:in_2_float(f) end
end
|
