trunk/examples/example_server.c

// example_server.c
//
/****************************************************************************
   Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; either version 2
   of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

*****************************************************************************/

#include "server.h"
#include "parser.h"

#include <time.h>

#define SERVER_PORT 8888

#if defined(WIN32)
static WSADATA _wsaData;
#endif

////////////////////////////////////////////////////////////////////////

lscp_status_t server_callback ( lscp_connect_t *pConnect, const char *pchBuffer, int cchBuffer, void *pvData )
{
    lscp_status_t ret = LSCP_OK;
    lscp_parser_t tok;
    const char *pszResult = NULL;
    char szTemp[256];
    int i;
    static int iChannel = 0;

    if (pchBuffer == NULL) {
        fprintf(stderr, "server_callback: addr=%s port=%d: ",
            inet_ntoa(pConnect->client.addr.sin_addr),
            htons(pConnect->client.addr.sin_port));
        switch (cchBuffer) {
          case LSCP_CONNECT_OPEN:
            fprintf(stderr, "New client connection.\n");
            break;
          case LSCP_CONNECT_CLOSE:
            fprintf(stderr, "Connection closed.\n");
            break;
        }
        return ret;
    }

    lscp_socket_trace("server_callback", &(pConnect->client.addr), pchBuffer, cchBuffer);

    lscp_parser_init(&tok, pchBuffer, cchBuffer);

    if (lscp_parser_test(&tok, "GET")) {
        if (lscp_parser_test(&tok, "CHANNEL")) {
            if (lscp_parser_test(&tok, "INFO")) {
                // Getting sampler channel informations:
                // GET CHANNEL INFO <sampler-channel>
                pszResult = "ENGINE_NAME: DummyEngine\r\n"
                            "INSTRUMENT_FILE: DummyInstrument.gig\r\n"
                            "INSTRUMENT_NR: 0\r\n"
                            "INSTRUMENT_STATUS: 100\r\n"
                            "AUDIO_OUTPUT_DEVICE: 0\r\n"
                            "AUDIO_OUTPUT_CHANNELS: 2\r\n"
                            "AUDIO_OUTPUT_ROUTING: 0,1\r\n"
                            "MIDI_INPUT_DEVICE: 0\r\n"
                            "MIDI_INPUT_PORT: 0\r\n"
                            "MIDI_INPUT_CHANNEL: ALL\r\n"
                            "VOLUME: 0.5\r\n";
            }
            else if (lscp_parser_test(&tok, "VOICE_COUNT")) {
                // Current number of active voices:
                // GET CHANNEL VOICE_COUNT <sampler-channel>
                sprintf(szTemp, "%d", rand() % 100);
                pszResult = szTemp;
            }
            else if (lscp_parser_test(&tok, "STREAM_COUNT")) {
                // Current number of active disk streams:
                // GET CHANNEL STREAM_COUNT <sampler-channel>
                pszResult = "3\r\n";
            }
            else if (lscp_parser_test(&tok, "BUFFER_FILL")) {
                if (lscp_parser_test(&tok, "BYTES")) {
                    // Current fill state of disk stream buffers:
                    // GET CHANNEL BUFFER_FILL BYTES <sampler-channel>
                    sprintf(szTemp, "[1]%d,[2]%d,[3]%d\r\n", rand(), rand(), rand());
                    pszResult = szTemp;
                }
                else if (lscp_parser_test(&tok, "PERCENTAGE")) {
                    // Current fill state of disk stream buffers:
                    // GET CHANNEL BUFFER_FILL PERCENTAGE <sampler-channel>
                    sprintf(szTemp, "[1]%d%%,[2]%d%%,[3]%d%%\r\n", rand() % 100, rand() % 100, rand() % 100);
                    pszResult = szTemp;
                }
                else ret = LSCP_FAILED;
            }
            else ret = LSCP_FAILED;
        }
        else if (lscp_parser_test(&tok, "CHANNELS")) {
            // Current number of sampler channels:
            // GET CHANNELS
            sprintf(szTemp, "%d", iChannel);
            pszResult = szTemp;
        }
        else if (lscp_parser_test(&tok, "AVAILABLE_AUDIO_OUTPUT_DRIVERS")) {
            // Getting all available audio output drivers.
            // GET AVAILABLE_AUDIO_OUTPUT_DRIVERS
            pszResult = "Alsa,Jack,CoreAudio\r\n";
        }
        else if (lscp_parser_test(&tok, "AVAILABLE_MIDI_INPUT_DRIVERS")) {
            // Getting all available MIDI input drivers.
            // GET AVAILABLE_MIDI_INPUT_DRIVERS
            pszResult = "Alsa,MidiShare,CoreMidi\r\n";
        }
        else if (lscp_parser_test2(&tok, "AUDIO_OUTPUT_DRIVER", "INFO")) {
            // Getting informations about a specific audio output driver.
            // GET AUDIO_OUTPUT_DRIVER INFO <audio-output-type>
            if (lscp_parser_test(&tok, "ALSA")) {
                pszResult = "DESCRIPTION: 'ALSA PCM'\r\n"
                            "VERSION: '1.0'\r\n"
                            "PARAMETERS: CHANNELS,SAMPLERATE,ACTIVE,CARD\r\n";
            }
            else if (lscp_parser_test(&tok, "JACK")) {
                pszResult = "DESCRIPTION: Jack Audio Connection Kit\r\n"
                            "VERSION: 0.98.1\r\n"
                            "PARAMETERS: CHANNELS,SAMPLERATE,ACTIVE\r\n";
            }
            else ret = LSCP_FAILED;
        }
        else if (lscp_parser_test2(&tok, "MIDI_INPUT_DRIVER", "INFO")) {
            // Getting informations about a specific MIDI input driver.
            // GET MIDI_INPUT_DRIVER INFO <midi-input-type>
            if (lscp_parser_test(&tok, "ALSA")) {
                pszResult = "DESCRIPTION: ALSA Sequencer\r\n"
                            "VERSION: 1.0\r\n"
                            "PARAMETERS: PORTS,ACTIVE\r\n";
            }
            else ret = LSCP_FAILED;
        }
        else if (lscp_parser_test(&tok, "AVAILABLE_ENGINES")) {
            // Getting all available engines:
            // GET AVAILABLE_ENGINES
            pszResult = "Engine1,Engine2,Engine3\r\n";
        }
        else if (lscp_parser_test2(&tok, "ENGINE", "INFO")) {
            // Getting information about an engine.
            // GET ENGINE INFO <engine-name>
            pszResult = "DESCRIPTION: DummyEngine\r\n"
                        "VERSION: 1.0\r\n";
        }
        else ret = LSCP_FAILED;
    }
    else if (lscp_parser_test(&tok, "LIST")) {
        if (lscp_parser_test(&tok, "CHANNELS")) {
            // Getting all created sampler channel list.
            // GET CHANNELS
            if (iChannel > 0) {
                strcpy(szTemp, "0");
                for (i = 1; i < iChannel; i++)
                    sprintf(szTemp + strlen(szTemp), ",%d", i);
                strcat(szTemp, "\r\n");
                pszResult = szTemp;
            }
            else ret = LSCP_FAILED;
        }
        else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICES")) {
            // Getting all created audio output device list.
            // GET AUDIO_OUTPUT_DEVICES
            pszResult = "0,1\r\n";
        }
        else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICES")) {
            // Getting all created MID input device list.
            // GET MIDI_INPUT_DEVICES
            pszResult = "0\r\n";
        }
        else ret = LSCP_FAILED;
    }
    else if (lscp_parser_test(&tok, "SET")) {
        if (lscp_parser_test(&tok, "CHANNEL")) {
            if (lscp_parser_test(&tok, "VOLUME")) {
                // Setting channel volume:
                // SET CHANNEL VOLUME <sampler-channel> <volume>
            }
            else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_TYPE")) {
                // Setting audio output type:
                // SET CHANNEL AUDIO_OUTPUT_TYPE <sampler-channel> <audio-output-type>
            }
            else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICE")) {
                // Setting audio output device:
                // SET CHANNEL AUDIO_OUTPUT_DEVICE <sampler-channel> <device-id>
            }
            else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_CHANNEL")) {
                // Setting audio output channel:
                // SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-in> <audio-out>
            }
            else if (lscp_parser_test(&tok, "MIDI_INPUT_TYPE")) {
                // Setting MIDI input type:
                // SET CHANNEL MIDI_INPUT_TYPE <sampler-channel> <midi-input-type>
            }
            else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICE")) {
                // Setting MIDI input device:
                // SET CHANNEL MIDI_INPUT_DEVICE <sampler-channel> <device-id>
            }
            else if (lscp_parser_test(&tok, "MIDI_INPUT_PORT")) {
                // Setting MIDI input port:
                // SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port>
            }
            else if (lscp_parser_test(&tok, "MIDI_INPUT_CHANNEL")) {
                // Setting MIDI input channel:
                // SET CHANNEL MIDI_INPUT_CHANNEL <sampler-channel> <midi-input-chan>
            }
            else ret = LSCP_FAILED;
        }
        else ret = LSCP_FAILED;
    }
    else if (lscp_parser_test(&tok, "LOAD")) {
        if (lscp_parser_test(&tok, "ENGINE")) {
            // Loading a sampler engine:
            // LOAD ENGINE <engine-name> <sampler-channel>
        }
        else if (lscp_parser_test(&tok, "INSTRUMENT")) {
            // Loading an instrument:
            // LOAD INSTRUMENT [NON_MODAL] <filename> <instr-index> <sampler-channel>
        }
        else ret = LSCP_FAILED;
    }
    else if (lscp_parser_test2(&tok, "ADD", "CHANNEL")) {
        // Adding a new sampler channel:
        // ADD CHANNEL
        sprintf(szTemp, "OK[%d]", iChannel++);
        pszResult = szTemp;
    }
    else if (lscp_parser_test2(&tok, "REMOVE", "CHANNEL")) {
        // Removing a sampler channel:
        // REMOVE CHANNEL <sampler-channel>
    }
    else if (lscp_parser_test2(&tok, "RESET", "CHANNEL")) {
        // Resetting a sampler channel:
        // RESET CHANNEL <sampler-channel>
    }
    else if (lscp_parser_test(&tok, "SUBSCRIBE")) {
        // Register frontend for receiving event notification messages:
        // SUBSCRIBE <event>
        ret = lscp_server_subscribe(pConnect, lscp_event_from_text(lscp_parser_next(&tok)));
    }
    else if (lscp_parser_test(&tok, "UNSUBSCRIBE")) {
        // Deregister frontend for not receiving event notification messages anymore:
        // UNSUBSCRIBE <event>
        ret = lscp_server_unsubscribe(pConnect, lscp_event_from_text(lscp_parser_next(&tok)));
    }
    else if (lscp_parser_test(&tok, "QUIT")) {
        // Close client connection:
        // QUIT
        lscp_parser_free(&tok);
        return LSCP_FAILED; // Disconnect.
    }
    else ret = LSCP_FAILED;

    lscp_parser_free(&tok);

    if (pszResult == NULL)
        pszResult = (ret == LSCP_OK ? "OK\r\n" : "ERR:1:Failed\r\n");

    fprintf(stderr, "> %s", pszResult);

    return lscp_server_result(pConnect, pszResult, strlen(pszResult));
}

////////////////////////////////////////////////////////////////////////

void server_usage (void)
{
    printf("\n  %s %s (Build: %s)\n", lscp_server_package(), lscp_server_version(), lscp_server_build());

    fputs("\n  Available server commands: help, exit, quit, list", stdout);
    fputs("\n  (all else are broadcast verbatim to subscribers)\n\n", stdout);
}

void server_prompt (void)
{
    fputs("lscp_server> ", stdout);
}

int main (int argc, char *argv[] )
{
    lscp_server_t *pServer;
    char szLine[200];
    int cchLine;
    lscp_connect_t *p;

#if defined(WIN32)
    if (WSAStartup(MAKEWORD(1, 1), &_wsaData) != 0) {
        fprintf(stderr, "lscp_server: WSAStartup failed.\n");
        return -1;
    }
#endif

    srand(time(NULL));

    pServer = lscp_server_create(SERVER_PORT, server_callback, NULL);
    if (pServer == NULL)
        return -1;

    server_usage();
    server_prompt();

    while (fgets(szLine, sizeof(szLine), stdin)) {

        cchLine = strlen(szLine);
        while (cchLine > 0 && (szLine[cchLine - 1] == '\n' || szLine[cchLine - 1] == '\r'))
            cchLine--;
        szLine[cchLine] = '\0';

        if (strcmp(szLine, "exit") == 0 || strcmp(szLine, "quit") == 0)
            break;
        else
        if (strcmp(szLine, "list") == 0) {
            for (p = pServer->connects.first; p; p = p->next) {
                printf("client: sock=%d addr=%s port=%d events=0x%04x.\n",
                    p->client.sock,
                    inet_ntoa(p->client.addr.sin_addr),
                    ntohs(p->client.addr.sin_port),
                    (int) p->events
                );
            }
        }
        else
        if (cchLine > 0 && strcmp(szLine, "help") != 0)
            lscp_server_broadcast(pServer, LSCP_EVENT_MISCELLANEOUS, szLine, strlen(szLine));
        else
            server_usage();

        server_prompt();
    }

    lscp_server_destroy(pServer);

#if defined(WIN32)
    WSACleanup();
#endif

    return 0;
}

// end of example_server.c
1	capela	105	// example_server.c
2			//
3			/****************************************************************************
4			Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved.
5
6			This program is free software; you can redistribute it and/or
7			modify it under the terms of the GNU General Public License
8			as published by the Free Software Foundation; either version 2
9			of the License, or (at your option) any later version.
10
11			This program is distributed in the hope that it will be useful,
12			but WITHOUT ANY WARRANTY; without even the implied warranty of
13			MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			GNU General Public License for more details.
15
16			You should have received a copy of the GNU General Public License
17			along with this program; if not, write to the Free Software
18			Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19
20			*****************************************************************************/
21
22			#include "server.h"
23			#include "parser.h"
24
25			#include <time.h>
26
27			#define SERVER_PORT 8888
28
29			#if defined(WIN32)
30			static WSADATA _wsaData;
31			#endif
32
33			////////////////////////////////////////////////////////////////////////
34
35			lscp_status_t server_callback ( lscp_connect_t pConnect, const char pchBuffer, int cchBuffer, void *pvData )
36			{
37			lscp_status_t ret = LSCP_OK;
38			lscp_parser_t tok;
39			const char *pszResult = NULL;
40			char szTemp[256];
41	capela	125	int i;
42	capela	105	static int iChannel = 0;
43
44			if (pchBuffer == NULL) {
45			fprintf(stderr, "server_callback: addr=%s port=%d: ",
46			inet_ntoa(pConnect->client.addr.sin_addr),
47			htons(pConnect->client.addr.sin_port));
48			switch (cchBuffer) {
49			case LSCP_CONNECT_OPEN:
50			fprintf(stderr, "New client connection.\n");
51			break;
52			case LSCP_CONNECT_CLOSE:
53			fprintf(stderr, "Connection closed.\n");
54			break;
55			}
56			return ret;
57			}
58
59			lscp_socket_trace("server_callback", &(pConnect->client.addr), pchBuffer, cchBuffer);
60
61			lscp_parser_init(&tok, pchBuffer, cchBuffer);
62
63			if (lscp_parser_test(&tok, "GET")) {
64			if (lscp_parser_test(&tok, "CHANNEL")) {
65			if (lscp_parser_test(&tok, "INFO")) {
66			// Getting sampler channel informations:
67			// GET CHANNEL INFO <sampler-channel>
68			pszResult = "ENGINE_NAME: DummyEngine\r\n"
69			"INSTRUMENT_FILE: DummyInstrument.gig\r\n"
70			"INSTRUMENT_NR: 0\r\n"
71	capela	144	"INSTRUMENT_STATUS: 100\r\n"
72	capela	105	"AUDIO_OUTPUT_DEVICE: 0\r\n"
73			"AUDIO_OUTPUT_CHANNELS: 2\r\n"
74			"AUDIO_OUTPUT_ROUTING: 0,1\r\n"
75			"MIDI_INPUT_DEVICE: 0\r\n"
76			"MIDI_INPUT_PORT: 0\r\n"
77			"MIDI_INPUT_CHANNEL: ALL\r\n"
78			"VOLUME: 0.5\r\n";
79			}
80			else if (lscp_parser_test(&tok, "VOICE_COUNT")) {
81			// Current number of active voices:
82			// GET CHANNEL VOICE_COUNT <sampler-channel>
83			sprintf(szTemp, "%d", rand() % 100);
84			pszResult = szTemp;
85			}
86			else if (lscp_parser_test(&tok, "STREAM_COUNT")) {
87			// Current number of active disk streams:
88			// GET CHANNEL STREAM_COUNT <sampler-channel>
89			pszResult = "3\r\n";
90			}
91			else if (lscp_parser_test(&tok, "BUFFER_FILL")) {
92			if (lscp_parser_test(&tok, "BYTES")) {
93			// Current fill state of disk stream buffers:
94			// GET CHANNEL BUFFER_FILL BYTES <sampler-channel>
95			sprintf(szTemp, "[1]%d,[2]%d,[3]%d\r\n", rand(), rand(), rand());
96			pszResult = szTemp;
97			}
98			else if (lscp_parser_test(&tok, "PERCENTAGE")) {
99			// Current fill state of disk stream buffers:
100			// GET CHANNEL BUFFER_FILL PERCENTAGE <sampler-channel>
101			sprintf(szTemp, "[1]%d%%,[2]%d%%,[3]%d%%\r\n", rand() % 100, rand() % 100, rand() % 100);
102			pszResult = szTemp;
103			}
104			else ret = LSCP_FAILED;
105			}
106			else ret = LSCP_FAILED;
107			}
108			else if (lscp_parser_test(&tok, "CHANNELS")) {
109			// Current number of sampler channels:
110			// GET CHANNELS
111			sprintf(szTemp, "%d", iChannel);
112			pszResult = szTemp;
113			}
114			else if (lscp_parser_test(&tok, "AVAILABLE_AUDIO_OUTPUT_DRIVERS")) {
115			// Getting all available audio output drivers.
116			// GET AVAILABLE_AUDIO_OUTPUT_DRIVERS
117	capela	144	pszResult = "Alsa,Jack,CoreAudio\r\n";
118	capela	105	}
119			else if (lscp_parser_test(&tok, "AVAILABLE_MIDI_INPUT_DRIVERS")) {
120			// Getting all available MIDI input drivers.
121			// GET AVAILABLE_MIDI_INPUT_DRIVERS
122	capela	144	pszResult = "Alsa,MidiShare,CoreMidi\r\n";
123	capela	105	}
124			else if (lscp_parser_test2(&tok, "AUDIO_OUTPUT_DRIVER", "INFO")) {
125			// Getting informations about a specific audio output driver.
126			// GET AUDIO_OUTPUT_DRIVER INFO <audio-output-type>
127			if (lscp_parser_test(&tok, "ALSA")) {
128			pszResult = "DESCRIPTION: 'ALSA PCM'\r\n"
129			"VERSION: '1.0'\r\n"
130			"PARAMETERS: CHANNELS,SAMPLERATE,ACTIVE,CARD\r\n";
131			}
132			else if (lscp_parser_test(&tok, "JACK")) {
133			pszResult = "DESCRIPTION: Jack Audio Connection Kit\r\n"
134			"VERSION: 0.98.1\r\n"
135			"PARAMETERS: CHANNELS,SAMPLERATE,ACTIVE\r\n";
136			}
137			else ret = LSCP_FAILED;
138			}
139			else if (lscp_parser_test2(&tok, "MIDI_INPUT_DRIVER", "INFO")) {
140			// Getting informations about a specific MIDI input driver.
141			// GET MIDI_INPUT_DRIVER INFO <midi-input-type>
142			if (lscp_parser_test(&tok, "ALSA")) {
143			pszResult = "DESCRIPTION: ALSA Sequencer\r\n"
144			"VERSION: 1.0\r\n"
145			"PARAMETERS: PORTS,ACTIVE\r\n";
146			}
147			else ret = LSCP_FAILED;
148			}
149			else if (lscp_parser_test(&tok, "AVAILABLE_ENGINES")) {
150			// Getting all available engines:
151			// GET AVAILABLE_ENGINES
152			pszResult = "Engine1,Engine2,Engine3\r\n";
153			}
154			else if (lscp_parser_test2(&tok, "ENGINE", "INFO")) {
155			// Getting information about an engine.
156			// GET ENGINE INFO <engine-name>
157			pszResult = "DESCRIPTION: DummyEngine\r\n"
158			"VERSION: 1.0\r\n";
159			}
160			else ret = LSCP_FAILED;
161			}
162	capela	125	else if (lscp_parser_test(&tok, "LIST")) {
163			if (lscp_parser_test(&tok, "CHANNELS")) {
164			// Getting all created sampler channel list.
165			// GET CHANNELS
166			if (iChannel > 0) {
167			strcpy(szTemp, "0");
168			for (i = 1; i < iChannel; i++)
169			sprintf(szTemp + strlen(szTemp), ",%d", i);
170			strcat(szTemp, "\r\n");
171			pszResult = szTemp;
172			}
173			else ret = LSCP_FAILED;
174			}
175			else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICES")) {
176			// Getting all created audio output device list.
177			// GET AUDIO_OUTPUT_DEVICES
178			pszResult = "0,1\r\n";
179			}
180			else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICES")) {
181			// Getting all created MID input device list.
182			// GET MIDI_INPUT_DEVICES
183			pszResult = "0\r\n";
184			}
185			else ret = LSCP_FAILED;
186			}
187	capela	105	else if (lscp_parser_test(&tok, "SET")) {
188			if (lscp_parser_test(&tok, "CHANNEL")) {
189			if (lscp_parser_test(&tok, "VOLUME")) {
190			// Setting channel volume:
191			// SET CHANNEL VOLUME <sampler-channel> <volume>
192			}
193			else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_TYPE")) {
194			// Setting audio output type:
195			// SET CHANNEL AUDIO_OUTPUT_TYPE <sampler-channel> <audio-output-type>
196			}
197	capela	125	else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICE")) {
198			// Setting audio output device:
199			// SET CHANNEL AUDIO_OUTPUT_DEVICE <sampler-channel> <device-id>
200			}
201	capela	105	else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_CHANNEL")) {
202			// Setting audio output channel:
203	capela	125	// SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-in> <audio-out>
204	capela	105	}
205			else if (lscp_parser_test(&tok, "MIDI_INPUT_TYPE")) {
206			// Setting MIDI input type:
207			// SET CHANNEL MIDI_INPUT_TYPE <sampler-channel> <midi-input-type>
208			}
209	capela	125	else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICE")) {
210			// Setting MIDI input device:
211			// SET CHANNEL MIDI_INPUT_DEVICE <sampler-channel> <device-id>
212			}
213	capela	105	else if (lscp_parser_test(&tok, "MIDI_INPUT_PORT")) {
214			// Setting MIDI input port:
215			// SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port>
216			}
217			else if (lscp_parser_test(&tok, "MIDI_INPUT_CHANNEL")) {
218			// Setting MIDI input channel:
219			// SET CHANNEL MIDI_INPUT_CHANNEL <sampler-channel> <midi-input-chan>
220			}
221			else ret = LSCP_FAILED;
222			}
223			else ret = LSCP_FAILED;
224			}
225			else if (lscp_parser_test(&tok, "LOAD")) {
226			if (lscp_parser_test(&tok, "ENGINE")) {
227			// Loading a sampler engine:
228			// LOAD ENGINE <engine-name> <sampler-channel>
229			}
230			else if (lscp_parser_test(&tok, "INSTRUMENT")) {
231			// Loading an instrument:
232	capela	144	// LOAD INSTRUMENT [NON_MODAL] <filename> <instr-index> <sampler-channel>
233	capela	105	}
234			else ret = LSCP_FAILED;
235			}
236			else if (lscp_parser_test2(&tok, "ADD", "CHANNEL")) {
237			// Adding a new sampler channel:
238			// ADD CHANNEL
239			sprintf(szTemp, "OK[%d]", iChannel++);
240			pszResult = szTemp;
241			}
242			else if (lscp_parser_test2(&tok, "REMOVE", "CHANNEL")) {
243			// Removing a sampler channel:
244			// REMOVE CHANNEL <sampler-channel>
245			}
246			else if (lscp_parser_test2(&tok, "RESET", "CHANNEL")) {
247			// Resetting a sampler channel:
248			// RESET CHANNEL <sampler-channel>
249			}
250	capela	146	else if (lscp_parser_test(&tok, "SUBSCRIBE")) {
251			// Register frontend for receiving event notification messages:
252			// SUBSCRIBE <event>
253			ret = lscp_server_subscribe(pConnect, lscp_event_from_text(lscp_parser_next(&tok)));
254	capela	105	}
255	capela	146	else if (lscp_parser_test(&tok, "UNSUBSCRIBE")) {
256			// Deregister frontend for not receiving event notification messages anymore:
257			// UNSUBSCRIBE <event>
258			ret = lscp_server_unsubscribe(pConnect, lscp_event_from_text(lscp_parser_next(&tok)));
259	capela	105	}
260			else if (lscp_parser_test(&tok, "QUIT")) {
261			// Close client connection:
262			// QUIT
263			lscp_parser_free(&tok);
264			return LSCP_FAILED; // Disconnect.
265			}
266			else ret = LSCP_FAILED;
267
268			lscp_parser_free(&tok);
269
270			if (pszResult == NULL)
271			pszResult = (ret == LSCP_OK ? "OK\r\n" : "ERR:1:Failed\r\n");
272
273			fprintf(stderr, "> %s", pszResult);
274
275			return lscp_server_result(pConnect, pszResult, strlen(pszResult));
276			}
277
278			////////////////////////////////////////////////////////////////////////
279
280			void server_usage (void)
281			{
282			printf("\n %s %s (Build: %s)\n", lscp_server_package(), lscp_server_version(), lscp_server_build());
283
284			fputs("\n Available server commands: help, exit, quit, list", stdout);
285			fputs("\n (all else are broadcast verbatim to subscribers)\n\n", stdout);
286			}
287
288			void server_prompt (void)
289			{
290			fputs("lscp_server> ", stdout);
291			}
292
293			int main (int argc, char *argv[] )
294			{
295			lscp_server_t *pServer;
296			char szLine[200];
297			int cchLine;
298			lscp_connect_t *p;
299
300			#if defined(WIN32)
301			if (WSAStartup(MAKEWORD(1, 1), &_wsaData) != 0) {
302			fprintf(stderr, "lscp_server: WSAStartup failed.\n");
303			return -1;
304			}
305			#endif
306
307			srand(time(NULL));
308
309			pServer = lscp_server_create(SERVER_PORT, server_callback, NULL);
310			if (pServer == NULL)
311			return -1;
312
313			server_usage();
314			server_prompt();
315
316			while (fgets(szLine, sizeof(szLine), stdin)) {
317
318			cchLine = strlen(szLine);
319			while (cchLine > 0 && (szLine[cchLine - 1] == '\n' \|\| szLine[cchLine - 1] == '\r'))
320			cchLine--;
321			szLine[cchLine] = '\0';
322
323			if (strcmp(szLine, "exit") == 0 \|\| strcmp(szLine, "quit") == 0)
324			break;
325			else
326			if (strcmp(szLine, "list") == 0) {
327			for (p = pServer->connects.first; p; p = p->next) {
328	capela	146	printf("client: sock=%d addr=%s port=%d events=0x%04x.\n",
329	capela	105	p->client.sock,
330			inet_ntoa(p->client.addr.sin_addr),
331			ntohs(p->client.addr.sin_port),
332	capela	146	(int) p->events
333	capela	105	);
334			}
335			}
336			else
337			if (cchLine > 0 && strcmp(szLine, "help") != 0)
338	capela	146	lscp_server_broadcast(pServer, LSCP_EVENT_MISCELLANEOUS, szLine, strlen(szLine));
339	capela	105	else
340			server_usage();
341
342			server_prompt();
343			}
344
345			lscp_server_destroy(pServer);
346
347			#if defined(WIN32)
348			WSACleanup();
349			#endif
350
351			return 0;
352			}
353
354			// end of example_server.c