1 |
/*************************************************************************** |
2 |
* * |
3 |
* LinuxSampler - modular, streaming capable sampler * |
4 |
* * |
5 |
* Copyright (C) 2003, 2004 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 "lscpserver.h" |
27 |
|
28 |
// as we need an reentrant scanner, we have to pass the pointer to the scanner with each yylex() call |
29 |
#define YYLEX_PARAM ((yyparse_param_t*) yyparse_param)->pScanner |
30 |
|
31 |
// to save us typing work in the rules action definitions |
32 |
#define LSCPSERVER ((yyparse_param_t*) yyparse_param)->pServer |
33 |
|
34 |
// clears input buffer and restarts scanner. |
35 |
void restart(yyparse_param_t* pparam, int& yychar); |
36 |
#define RESTART restart((yyparse_param_t*) YYPARSE_PARAM, yychar) |
37 |
|
38 |
// external reference to the main scanner function yylex() |
39 |
extern YY_DECL; |
40 |
|
41 |
// external reference to restart the lex scanner |
42 |
extern void yyrestart(FILE* input_file, yyscan_t yyscanner); |
43 |
|
44 |
// we provide our own version of yyerror() so we don't have to link against the yacc library |
45 |
void yyerror(const char* s); |
46 |
|
47 |
%} |
48 |
|
49 |
// reentrant parser |
50 |
%pure_parser |
51 |
|
52 |
%token <Char> CHAR |
53 |
%token <Dotnum> DOTNUM |
54 |
%token <Number> NUMBER |
55 |
%token <String> STRINGVAL |
56 |
%token SP LF CR HASH EQ |
57 |
%token ADD GET CREATE DESTROY LIST LOAD NON_MODAL REMOVE SET SUBSCRIBE UNSUBSCRIBE RESET QUIT |
58 |
%token CHANNEL NOTIFICATION |
59 |
%token AVAILABLE_ENGINES AVAILABLE_AUDIO_OUTPUT_DRIVERS CHANNELS INFO BUFFER_FILL STREAM_COUNT VOICE_COUNT |
60 |
%token INSTRUMENT ENGINE |
61 |
%token AUDIO_OUTPUT_CHANNEL AUDIO_OUTPUT_CHANNEL_PARAMETER AUDIO_OUTPUT_DEVICE AUDIO_OUTPUT_DEVICES AUDIO_OUTPUT_DEVICE_PARAMETER AUDIO_OUTPUT_DRIVER AUDIO_OUTPUT_DRIVER_PARAMETER MIDI_INPUT_PORT MIDI_INPUT_CHANNEL MIDI_INPUT_TYPE VOLUME |
62 |
%token BYTES PERCENTAGE |
63 |
%token MISCELLANEOUS |
64 |
|
65 |
%type <Dotnum> volume |
66 |
%type <Number> sampler_channel instrument_index audio_output_channel midi_input_channel |
67 |
%type <String> string param_val filename engine_name midi_input_port command create_instruction destroy_instruction get_instruction list_instruction load_instruction set_chan_instruction load_instr_args load_engine_args midi_input_type set_instruction subscribe_event unsubscribe_event |
68 |
%type <FillResponse> buffer_size_type |
69 |
%type <KeyValList> key_val_list |
70 |
|
71 |
%start input |
72 |
|
73 |
%% |
74 |
|
75 |
//TODO: return more meaningful error messages |
76 |
|
77 |
input : line |
78 |
| input LF line |
79 |
| input CR LF line |
80 |
; |
81 |
|
82 |
line : /* epsilon (empty line ignored) */ |
83 |
| comment |
84 |
| command { LSCPSERVER->AnswerClient($1); } |
85 |
| error { LSCPSERVER->AnswerClient("Err:0:Unknown command.\r\n"); RESTART; return LSCP_SYNTAX_ERROR; } |
86 |
; |
87 |
|
88 |
comment : HASH |
89 |
| comment HASH |
90 |
| comment SP |
91 |
| comment NUMBER |
92 |
| comment string |
93 |
; |
94 |
|
95 |
command : ADD SP CHANNEL { $$ = LSCPSERVER->AddChannel(); } |
96 |
| GET SP get_instruction { $$ = $3; } |
97 |
| CREATE SP create_instruction { $$ = $3; } |
98 |
| DESTROY SP destroy_instruction { $$ = $3; } |
99 |
| LIST SP list_instruction { $$ = $3; } |
100 |
| LOAD SP load_instruction { $$ = $3; } |
101 |
| REMOVE SP CHANNEL SP sampler_channel { $$ = LSCPSERVER->RemoveChannel($5); } |
102 |
| SET SP set_instruction { $$ = $3; } |
103 |
| SUBSCRIBE SP subscribe_event { $$ = $3; } |
104 |
| UNSUBSCRIBE SP unsubscribe_event { $$ = $3; } |
105 |
| RESET SP CHANNEL SP sampler_channel { $$ = LSCPSERVER->ResetChannel($5); } |
106 |
| QUIT { LSCPSERVER->AnswerClient("Bye!\r\n"); return 0; } |
107 |
; |
108 |
|
109 |
subscribe_event : CHANNELS { $$ = LSCPSERVER->SubscribeNotification(event_channels); } |
110 |
| VOICE_COUNT { $$ = LSCPSERVER->SubscribeNotification(event_voice_count); } |
111 |
| STREAM_COUNT { $$ = LSCPSERVER->SubscribeNotification(event_stream_count); } |
112 |
| BUFFER_FILL { $$ = LSCPSERVER->SubscribeNotification(event_channel_buffer_fill); } |
113 |
| INFO { $$ = LSCPSERVER->SubscribeNotification(event_channel_info); } |
114 |
| MISCELLANEOUS { $$ = LSCPSERVER->SubscribeNotification(event_misc); } |
115 |
; |
116 |
|
117 |
unsubscribe_event : CHANNELS { $$ = LSCPSERVER->UnsubscribeNotification(event_channels); } |
118 |
| VOICE_COUNT { $$ = LSCPSERVER->UnsubscribeNotification(event_voice_count); } |
119 |
| STREAM_COUNT { $$ = LSCPSERVER->UnsubscribeNotification(event_stream_count); } |
120 |
| BUFFER_FILL { $$ = LSCPSERVER->UnsubscribeNotification(event_channel_buffer_fill); } |
121 |
| INFO { $$ = LSCPSERVER->UnsubscribeNotification(event_channel_info); } |
122 |
| MISCELLANEOUS { $$ = LSCPSERVER->UnsubscribeNotification(event_misc); } |
123 |
; |
124 |
|
125 |
get_instruction : AVAILABLE_ENGINES { $$ = LSCPSERVER->GetAvailableEngines(); } |
126 |
| AVAILABLE_AUDIO_OUTPUT_DRIVERS { $$ = LSCPSERVER->GetAvailableAudioOutputDrivers(); } |
127 |
| AUDIO_OUTPUT_DRIVER SP INFO SP string { $$ = LSCPSERVER->GetAudioOutputDriverInfo($5); } |
128 |
| AUDIO_OUTPUT_DRIVER_PARAMETER SP INFO SP string SP string { $$ = LSCPSERVER->GetAudioOutputDriverParameterInfo($5, $7); } |
129 |
| AUDIO_OUTPUT_DRIVER_PARAMETER SP INFO SP string SP string SP key_val_list { $$ = LSCPSERVER->GetAudioOutputDriverParameterInfo($5, $7, $9); } |
130 |
| AUDIO_OUTPUT_DEVICES { $$ = LSCPSERVER->GetAudioOutputDeviceCount(); } |
131 |
| AUDIO_OUTPUT_DEVICE SP INFO SP NUMBER { $$ = LSCPSERVER->GetAudioOutputDeviceInfo($5); } |
132 |
| AUDIO_OUTPUT_CHANNEL SP INFO SP NUMBER SP NUMBER { $$ = LSCPSERVER->GetAudioOutputChannelInfo($5, $7); } |
133 |
| AUDIO_OUTPUT_CHANNEL_PARAMETER SP INFO SP NUMBER SP NUMBER SP string { $$ = LSCPSERVER->GetAudioOutputChannelParameterInfo($5, $7, $9); } |
134 |
| CHANNELS { $$ = LSCPSERVER->GetChannels(); } |
135 |
| CHANNEL SP INFO SP sampler_channel { $$ = LSCPSERVER->GetChannelInfo($5); } |
136 |
| CHANNEL SP BUFFER_FILL SP buffer_size_type SP sampler_channel { $$ = LSCPSERVER->GetBufferFill($5, $7); } |
137 |
| CHANNEL SP STREAM_COUNT SP sampler_channel { $$ = LSCPSERVER->GetStreamCount($5); } |
138 |
| CHANNEL SP VOICE_COUNT SP sampler_channel { $$ = LSCPSERVER->GetVoiceCount($5); } |
139 |
| ENGINE SP INFO SP engine_name { $$ = LSCPSERVER->GetEngineInfo($5); } |
140 |
; |
141 |
|
142 |
set_instruction : AUDIO_OUTPUT_DEVICE_PARAMETER SP NUMBER SP string EQ param_val { $$ = LSCPSERVER->SetAudioOutputDeviceParameter($3, $5, $7); } |
143 |
| AUDIO_OUTPUT_CHANNEL_PARAMETER SP NUMBER SP NUMBER SP string EQ param_val { $$ = LSCPSERVER->SetAudioOutputChannelParameter($3, $5, $7, $9); } |
144 |
| CHANNEL SP set_chan_instruction { $$ = $3; } |
145 |
; |
146 |
|
147 |
create_instruction : AUDIO_OUTPUT_DEVICE SP string SP key_val_list { $$ = LSCPSERVER->CreateAudioOutputDevice($3,$5); } |
148 |
| AUDIO_OUTPUT_DEVICE SP string { $$ = LSCPSERVER->CreateAudioOutputDevice($3); } |
149 |
; |
150 |
|
151 |
destroy_instruction : AUDIO_OUTPUT_DEVICE SP NUMBER { $$ = LSCPSERVER->DestroyAudioOutputDevice($3); } |
152 |
; |
153 |
|
154 |
load_instruction : INSTRUMENT SP load_instr_args { $$ = $3; } |
155 |
| ENGINE SP load_engine_args { $$ = $3; } |
156 |
; |
157 |
|
158 |
set_chan_instruction : AUDIO_OUTPUT_DEVICE SP sampler_channel SP NUMBER { $$ = LSCPSERVER->SetAudioOutputDevice($5, $3); } |
159 |
| AUDIO_OUTPUT_CHANNEL SP sampler_channel SP audio_output_channel SP audio_output_channel { $$ = LSCPSERVER->SetAudioOutputChannel($5, $7, $3); } |
160 |
| MIDI_INPUT_PORT SP sampler_channel SP midi_input_port { $$ = LSCPSERVER->SetMIDIInputPort($5, $3); } |
161 |
| MIDI_INPUT_CHANNEL SP sampler_channel SP midi_input_channel { $$ = LSCPSERVER->SetMIDIInputChannel($5, $3); } |
162 |
| MIDI_INPUT_TYPE SP sampler_channel SP midi_input_type { $$ = LSCPSERVER->SetMIDIInputType($5, $3); } |
163 |
| VOLUME SP sampler_channel SP volume { $$ = LSCPSERVER->SetVolume($5, $3); } |
164 |
; |
165 |
|
166 |
key_val_list : string EQ param_val { $$[$1] = $3; } |
167 |
| key_val_list SP string EQ param_val { $$ = $1; $$[$3] = $5; } |
168 |
; |
169 |
|
170 |
buffer_size_type : BYTES { $$ = fill_response_bytes; } |
171 |
| PERCENTAGE { $$ = fill_response_percentage; } |
172 |
; |
173 |
|
174 |
list_instruction : AUDIO_OUTPUT_DEVICES { $$ = LSCPSERVER->GetAudioOutputDevices(); } |
175 |
; |
176 |
|
177 |
load_instr_args : filename SP instrument_index SP sampler_channel { $$ = LSCPSERVER->LoadInstrument($1, $3, $5); } |
178 |
| NON_MODAL SP filename SP instrument_index SP sampler_channel { $$ = LSCPSERVER->LoadInstrument($3, $5, $7, true); } |
179 |
; |
180 |
|
181 |
load_engine_args : engine_name SP sampler_channel { $$ = LSCPSERVER->LoadEngine($1, $3); } |
182 |
; |
183 |
|
184 |
midi_input_type : string |
185 |
; |
186 |
|
187 |
volume : DOTNUM |
188 |
| NUMBER { $$ = $1; } |
189 |
; |
190 |
|
191 |
sampler_channel : NUMBER |
192 |
; |
193 |
|
194 |
instrument_index : NUMBER |
195 |
; |
196 |
|
197 |
audio_output_channel : NUMBER |
198 |
; |
199 |
|
200 |
midi_input_channel : NUMBER |
201 |
; |
202 |
|
203 |
engine_name : string |
204 |
; |
205 |
|
206 |
midi_input_port : STRINGVAL |
207 |
; |
208 |
|
209 |
filename : STRINGVAL |
210 |
; |
211 |
|
212 |
param_val : STRINGVAL { $$ = $1; } |
213 |
| NUMBER { std::stringstream ss; ss << $1; $$ = ss.str(); } |
214 |
| DOTNUM { std::stringstream ss; ss << $1; $$ = ss.str(); } |
215 |
; |
216 |
|
217 |
string : CHAR { std::string s; s = $1; $$ = s; } |
218 |
| string CHAR { $$ = $1 + $2; } |
219 |
; |
220 |
|
221 |
%% |
222 |
|
223 |
/** |
224 |
* Will be called when an error occured (usually syntax error). |
225 |
*/ |
226 |
void yyerror(const char* s) { |
227 |
dmsg(2,("LSCPParser: %s\n", s)); |
228 |
} |
229 |
|
230 |
/** |
231 |
* Clears input buffer and restarts scanner. |
232 |
*/ |
233 |
void restart(yyparse_param_t* pparam, int& yychar) { |
234 |
// restart scanner |
235 |
yyrestart(stdin, pparam->pScanner); |
236 |
// flush input buffer |
237 |
static char buf[1024]; |
238 |
while(recv(hSession, buf, 1024, MSG_DONTWAIT) > 0); |
239 |
// reset lookahead symbol |
240 |
yyclearin; |
241 |
} |