/[svn]/linuxsampler/trunk/src/network/lscpparser.h
ViewVC logotype

Annotation of /linuxsampler/trunk/src/network/lscpparser.h

Parent Directory Parent Directory | Revision Log Revision Log


Revision 64 - (hide annotations) (download) (as text)
Thu May 6 20:06:20 2004 UTC (19 years, 10 months ago) by schoenebeck
File MIME type: text/x-c++hdr
File size: 5318 byte(s)
* src/Sampler.cpp: fixed 3 stupid but fatal bugs that left in the rush (in
  method SamplerChannels(), CreateAudioOutputDevice() and
  CreateMidiInputDevice())
* src/network/lscpserver.cpp: implemented LSCP command
  'SET CHANNEL MIDI_INPUT_CHANNEL'
* src/Sampler.h: moved enums 'audio_output_type_t', 'midi_input_type_t'
  and 'engine_type_t' into the respective base classes
  ('AudioOutputDevice', 'MidiInputDevice', 'Engine')

1 schoenebeck 35 /***************************************************************************
2     * *
3     * LinuxSampler - modular, streaming capable sampler *
4     * *
5 schoenebeck 56 * Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck *
6 schoenebeck 35 * *
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     #ifndef __LSCPPARSER_H__
24     #define __LSCPPARSER_H__
25    
26     #include <sys/types.h>
27     #include <sys/socket.h>
28    
29     #include <stdlib.h>
30     #include <iostream>
31     #include <sstream>
32     #include <string>
33    
34 schoenebeck 53 #include "../common/global.h"
35     #include "../Sampler.h"
36 schoenebeck 35
37     /// Will be returned by the parser in case of syntax errors.
38     #define LSCP_SYNTAX_ERROR -69
39    
40 schoenebeck 53 using namespace LinuxSampler;
41    
42 schoenebeck 35 /**
43     * How the fill states of disk stream buffers should be reflected.
44     */
45     enum fill_response_t {
46     fill_response_bytes, ///< The returned values are meant in bytes.
47     fill_response_percentage ///< The returned values are meant in percentage.
48     };
49    
50     /**
51     * Semantic value of the lookahead symbol.
52     *
53     * Structure that is used by the parser to process and return values from the
54     * input text. The lexical analyzer for example returns a number for
55     * recognized number strings in the input text and the parser might return a
56     * value for each of it's rules.
57     */
58     struct YYSTYPE {
59     union {
60 schoenebeck 64 char Char;
61     unsigned int Number;
62     double Dotnum;
63     fill_response_t FillResponse;
64     AudioOutputDevice::type_t AudioOutput;
65     MidiInputDevice::type_t MidiInput;
66 schoenebeck 35 };
67     std::string String;
68     };
69     #define yystype YYSTYPE ///< For backward compatibility.
70     #define YYSTYPE_IS_DECLARED ///< We tell the lexer / parser that we use our own data structure as defined above.
71    
72     // just symbol prototyping
73     class LSCPServer;
74    
75     // pointer to an (reentrant) scanner / lexical analyzer
76     typedef void* yyscan_t;
77    
78     /**
79     * Parameters given to the parser on every yyparse() call.
80     */
81     struct yyparse_param_t {
82     LSCPServer* pServer;
83     yyscan_t pScanner;
84     };
85     #define YYPARSE_PARAM yyparse_param
86    
87     /**
88     * Prototype of the main scanner function (lexical analyzer).
89     */
90     #define YY_DECL int yylex(YYSTYPE* yylval, yyscan_t yyscanner)
91    
92     /**
93     * Override lex's input function which just reads from stdin by default.
94     * We read from a socket instead.
95     */
96     #define YY_INPUT(buf,result,max_size) \
97     errno=0; \
98     while ( (result = recv(hSession, buf, max_size, 0)) < 0 ) \
99     { \
100     if(errno != EINTR) \
101     { \
102     switch(errno) { \
103     case EBADF: \
104     dmsg(2,("LSCPScanner: The argument s is an invalid descriptor.\n")); \
105     break; \
106     case ECONNREFUSED: \
107     dmsg(2,("LSCPScanner: A remote host refused to allow the network connection (typically because it is not running the requested service).\n")); \
108     break; \
109     case ENOTCONN: \
110     dmsg(2,("LSCPScanner: The socket is associated with a connection-oriented protocol and has not been connected (see connect(2) and accept(2)).\n")); \
111     break; \
112     case ENOTSOCK: \
113     dmsg(2,("LSCPScanner: The argument s does not refer to a socket.\n")); \
114     break; \
115     case EAGAIN: \
116     dmsg(2,("LSCPScanner: The socket is marked non-blocking and the receive operation would block, or a receive timeout had been set and the timeout expired before data was received.\n")); \
117     break; \
118     case EINTR: \
119     dmsg(2,("LSCPScanner: The receive was interrupted by delivery of a signal before any data were available.\n")); \
120     break; \
121     case EFAULT: \
122     dmsg(2,("LSCPScanner: The receive buffer pointer(s) point outside the process's address space.\n")); \
123     break; \
124     case EINVAL: \
125     dmsg(2,("LSCPScanner: Invalid argument passed.\n")); \
126     break; \
127     case ENOMEM: \
128     dmsg(2,("LSCPScanner: Could not allocate memory for recvmsg.\n")); \
129     break; \
130     default: \
131     dmsg(2,("LSCPScanner: Unknown recv() error.\n")); \
132     break; \
133     } \
134     YY_FATAL_ERROR( "input in flex scanner failed" ); \
135     break; \
136     } \
137     errno=0; \
138     clearerr(yyin); \
139     }\
140    
141    
142     #endif // __LSCPPARSER_H__

  ViewVC Help
Powered by ViewVC