/[svn]/linuxsampler/trunk/src/network/lscp.l
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Annotation of /linuxsampler/trunk/src/network/lscp.l

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Revision 35 - (hide annotations) (download)
Fri Mar 5 13:46:15 2004 UTC (20 years, 1 month ago) by schoenebeck
File size: 4246 byte(s)
* implemented parser for the LinuxSampler control protocol (LSCP) by using
  flex / bison (where src/network/lscp.l is the input file for lex / flex
  and src/network/lscp.y is the input file for yacc / bison), parser and
  scanner can be regenerated by 'make parser'
* implemented LSCP network server (only single threaded so far), LSCP
  server will be launched if LinuxSampler was started with "--server" flag,
  implemented the following LSCP commands so far: "LOAD INSTRUMENT", "GET
  CHANNEL VOICE_COUNT", "GET CHANNEL STREAM_COUNT", "GET CHANNEL
  BUFFER_FILL", "SET CHANNEL VOLUME" and "RESET CHANNEL"
* disk thread now started within the engine

1 schoenebeck 35 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5     * Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck *
6     * *
7     * This program is free software; you can redistribute it and/or modify *
8     * it under the terms of the GNU General Public License as published by *
9     * the Free Software Foundation; either version 2 of the License, or *
10     * (at your option) any later version. *
11     * *
12     * This program is distributed in the hope that it will be useful, *
13     * but WITHOUT ANY WARRANTY; without even the implied warranty of *
14     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
15     * GNU General Public License for more details. *
16     * *
17     * You should have received a copy of the GNU General Public License *
18     * along with this program; if not, write to the Free Software *
19     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, *
20     * MA 02111-1307 USA *
21     ***************************************************************************/
22    
23     %{
24    
25     #include "lscpparser.h"
26     #include "lscpsymbols.h"
27    
28     /// handle for a client connection (FIXME: doesn't work for more than one network connections of course)
29     int hSession;
30    
31     %}
32    
33     %option reentrant
34    
35     DIGIT [0-9]
36    
37     %%
38    
39     " " { return SP; }
40     \n { return LF; }
41     \r { return CR; }
42     ("+"|"-")?{DIGIT}+"."{DIGIT}+ { yylval->Dotnum = atof(yytext); return DOTNUM; }
43     ADD { return ADD; }
44     GET { return GET; }
45     LOAD { return LOAD; }
46     REMOVE { return REMOVE; }
47     SET { return SET; }
48     SUBSCRIBE { return SUBSCRIBE; }
49     UNSUBSCRIBE { return UNSUBSCRIBE; }
50     CHANNEL { return CHANNEL; }
51     NOTIFICATION { return NOTIFICATION; }
52     AVAILABLE_ENGINES { return AVAILABLE_ENGINES; }
53     CHANNELS { return CHANNELS; }
54     INFO { return INFO; }
55     BUFFER_FILL { return BUFFER_FILL; }
56     STREAM_COUNT { return STREAM_COUNT; }
57     VOICE_COUNT { return VOICE_COUNT; }
58     INSTRUMENT { return INSTRUMENT; }
59     ENGINE { return ENGINE; }
60     AUDIO_OUTPUT_CHANNEL { return AUDIO_OUTPUT_CHANNEL; }
61     AUDIO_OUTPUT_TYPE { return AUDIO_OUTPUT_TYPE; }
62     MIDI_INPUT_PORT { return MIDI_INPUT_PORT; }
63     MIDI_INPUT_CHANNEL { return MIDI_INPUT_CHANNEL; }
64     MIDI_INPUT_TYPE { return MIDI_INPUT_TYPE; }
65     VOLUME { return VOLUME; }
66     BYTES { return BYTES; }
67     PERCENTAGE { return PERCENTAGE; }
68     ALSA { return ALSA; }
69     JACK { return JACK; }
70     RESET { return RESET; }
71     QUIT { return QUIT; }
72     0|([1-9]{DIGIT}*) { yylval->Number = atoi(yytext); return NUMBER; }
73     . { yylval->Char = yytext[0]; return CHAR; }
74    
75     %%
76    
77     /**
78     * We provide our own version of yywrap() so we don't have to link against
79     * the lex library.
80     */
81     int yywrap(yyscan_t yyscanner) {
82     return 1; // continue scanning
83     }

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