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_test2(&tok, "SUBSCRIBE", "NOTIFICATION")) {
        // Register frontend for receiving UDP event messages:
        // SUBSCRIBE NOTIFICATION <udp-port>
        ret = lscp_server_subscribe(pConnect, lscp_parser_nextint(&tok));
    }
    else if (lscp_parser_test2(&tok, "UNSUBSCRIBE", "NOTIFICATION")) {
        // Deregister frontend for not receiving UDP event messages anymore:
        // UNSUBSCRIBE NOTIFICATION <session-id>
        ret = lscp_server_unsubscribe(pConnect, 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 tcp.port=%d udp.port=%d ping=%d sessid=%s.\n",
                    p->client.sock,
                    inet_ntoa(p->client.addr.sin_addr),
                    ntohs(p->client.addr.sin_port),
                    p->port,
                    p->ping,
                    p->sessid
                );
            }
        }
        else
        if (cchLine > 0 && strcmp(szLine, "help") != 0)
            lscp_server_broadcast(pServer, 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	// 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	int i;
42	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	"INSTRUMENT_STATUS: 100\r\n"
72	"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	pszResult = "Alsa,Jack,CoreAudio\r\n";
118	}
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	pszResult = "Alsa,MidiShare,CoreMidi\r\n";
123	}
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	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	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	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	else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_CHANNEL")) {
202	// Setting audio output channel:
203	// SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-in> <audio-out>
204	}
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	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	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	// LOAD INSTRUMENT [NON_MODAL] <filename> <instr-index> <sampler-channel>
233	}
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	else if (lscp_parser_test2(&tok, "SUBSCRIBE", "NOTIFICATION")) {
251	// Register frontend for receiving UDP event messages:
252	// SUBSCRIBE NOTIFICATION <udp-port>
253	ret = lscp_server_subscribe(pConnect, lscp_parser_nextint(&tok));
254	}
255	else if (lscp_parser_test2(&tok, "UNSUBSCRIBE", "NOTIFICATION")) {
256	// Deregister frontend for not receiving UDP event messages anymore:
257	// UNSUBSCRIBE NOTIFICATION <session-id>
258	ret = lscp_server_unsubscribe(pConnect, lscp_parser_next(&tok));
259	}
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	printf("client: sock=%d addr=%s tcp.port=%d udp.port=%d ping=%d sessid=%s.\n",
329	p->client.sock,
330	inet_ntoa(p->client.addr.sin_addr),
331	ntohs(p->client.addr.sin_port),
332	p->port,
333	p->ping,
334	p->sessid
335	);
336	}
337	}
338	else
339	if (cchLine > 0 && strcmp(szLine, "help") != 0)
340	lscp_server_broadcast(pServer, szLine, strlen(szLine));
341	else
342	server_usage();
343
344	server_prompt();
345	}
346
347	lscp_server_destroy(pServer);
348
349	#if defined(WIN32)
350	WSACleanup();
351	#endif
352
353	return 0;
354	}
355
356	// end of example_server.c