/[svn]/liblscp/trunk/src/client.c
ViewVC logotype

Diff of /liblscp/trunk/src/client.c

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 107 by capela, Fri Jun 4 21:06:59 2004 UTC revision 523 by capela, Mon May 9 10:17:12 2005 UTC
# Line 2  Line 2 
2  //  //
3  /****************************************************************************  /****************************************************************************
4     liblscp - LinuxSampler Control Protocol API     liblscp - LinuxSampler Control Protocol API
5     Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved.     Copyright (C) 2004-2005, rncbc aka Rui Nuno Capela. All rights reserved.
6    
7     This library is free software; you can redistribute it and/or     This library is free software; you can redistribute it and/or
8     modify it under the terms of the GNU Lesser General Public     modify it under the terms of the GNU Lesser General Public
# Line 28  Line 28 
28    
29  // Local prototypes.  // Local prototypes.
30    
31  static void _lscp_client_set_result (lscp_client_t *pClient, char *pszResult, int iErrno);  static void             _lscp_client_evt_proc       (void *pvClient);
 static void _lscp_client_udp_proc   (void *pvClient);  
32    
33    static lscp_status_t    _lscp_client_evt_connect    (lscp_client_t *pClient);
34  //-------------------------------------------------------------------------  static lscp_status_t    _lscp_client_evt_request    (lscp_client_t *pClient, int iSubscribe, lscp_event_t event);
 // Helper functions.  
   
 // Result buffer internal settler.  
 static void _lscp_client_set_result ( lscp_client_t *pClient, char *pszResult, int iErrno )  
 {  
     if (pClient->pszResult)  
         free(pClient->pszResult);  
     pClient->pszResult = NULL;  
   
     pClient->iErrno = iErrno;  
   
     if (pszResult)  
         pClient->pszResult = strdup(lscp_ltrim(pszResult));  
 }  
35    
36    
37  //-------------------------------------------------------------------------  //-------------------------------------------------------------------------
38  // UDP service (datagram oriented).  // Event service (datagram oriented).
39    
40  static void _lscp_client_udp_proc ( void *pvClient )  static void _lscp_client_evt_proc ( void *pvClient )
41  {  {
42      lscp_client_t *pClient = (lscp_client_t *) pvClient;      lscp_client_t *pClient = (lscp_client_t *) pvClient;
43      struct sockaddr_in addr;      
44      int   cAddr;      fd_set fds;                         // File descriptor list for select().
45      char  achBuffer[LSCP_BUFSIZ];      int    fd, fdmax;                   // Maximum file descriptor number.
46      int   cchBuffer;      struct timeval tv;                  // For specifying a timeout value.
47      const char *pszSeps = " \r\n";      int    iSelect;                     // Holds select return status.
48      char *pszToken;      int    iTimeout;
49      char *pch;      
50        char   achBuffer[LSCP_BUFSIZ];
51        int    cchBuffer;
52        const char *pszSeps = ":\r\n";
53        char * pszToken;
54        char * pch;
55        int     cchToken;
56        lscp_event_t event;
57    
58  #ifdef DEBUG  #ifdef DEBUG
59      fprintf(stderr, "_lscp_client_udp_proc: Client waiting for events.\n");      fprintf(stderr, "_lscp_client_evt_proc: Client waiting for events.\n");
60  #endif  #endif
61    
62      while (pClient->udp.iState) {      while (pClient->evt.iState) {
63          cAddr = sizeof(struct sockaddr_in);  
64          cchBuffer = recvfrom(pClient->udp.sock, achBuffer, sizeof(achBuffer), 0, (struct sockaddr *) &addr, &cAddr);          // Prepare for waiting on select...
65          if (cchBuffer > 0) {          fd = (int) pClient->evt.sock;
66  #ifdef DEBUG          FD_ZERO(&fds);
67              lscp_socket_trace("_lscp_client_udp_proc: recvfrom", &addr, achBuffer, cchBuffer);          FD_SET((unsigned int) fd, &fds);
68  #endif          fdmax = fd;
69              if (strncasecmp(achBuffer, "PING ", 5) == 0) {  
70            // Use the timeout (x10) select feature ...
71            iTimeout = 10 * pClient->iTimeout;
72            if (iTimeout > 1000) {
73                tv.tv_sec = iTimeout / 1000;
74                iTimeout -= tv.tv_sec * 1000;
75            }
76            else tv.tv_sec = 0;
77            tv.tv_usec = iTimeout * 1000;
78    
79            // Wait for event...
80            iSelect = select(fdmax + 1, &fds, NULL, NULL, &tv);
81            if (iSelect > 0 && FD_ISSET(fd, &fds)) {
82                // May recv now...
83                cchBuffer = recv(pClient->evt.sock, achBuffer, sizeof(achBuffer), 0);
84                if (cchBuffer > 0) {
85                  // Make sure received buffer it's null terminated.                  // Make sure received buffer it's null terminated.
86                  achBuffer[cchBuffer] = (char) 0;                  achBuffer[cchBuffer] = (char) 0;
87                  lscp_strtok(achBuffer, pszSeps, &(pch));       // Skip "PING"                  // Parse for the notification event message...
88                  lscp_strtok(NULL, pszSeps, &(pch));            // Skip port (must be the same as in addr)                  pszToken = lscp_strtok(achBuffer, pszSeps, &(pch)); // Have "NOTIFY".
89                  pszToken = lscp_strtok(NULL, pszSeps, &(pch)); // Have session-id.                  if (strcasecmp(pszToken, "NOTIFY") == 0) {
90                  if (pszToken) {                      pszToken = lscp_strtok(NULL, pszSeps, &(pch));
91                      // Set now client's session-id, if not already                      event    = lscp_event_from_text(pszToken);
92                      if (pClient->sessid == NULL)                      // And pick the rest of data...
93                          pClient->sessid = strdup(pszToken);                      pszToken = lscp_strtok(NULL, pszSeps, &(pch));
94                      if (pClient->sessid && strcmp(pszToken, pClient->sessid) == 0) {                      cchToken = (pszToken == NULL ? 0 : strlen(pszToken));
95                          sprintf(achBuffer, "PONG %s\r\n", pClient->sessid);                      // Double-check if we're really up to it...
96                          cchBuffer = strlen(achBuffer);                      if (pClient->events & event) {
97                          if (sendto(pClient->udp.sock, achBuffer, cchBuffer, 0, (struct sockaddr *) &addr, cAddr) < cchBuffer)                          // Invoke the client event callback...
98                              lscp_socket_perror("_lscp_client_udp_proc: sendto");                          if ((*pClient->pfnCallback)(
99  #ifdef DEBUG                                  pClient,
100                          fprintf(stderr, "> %s", achBuffer);                                  event,
101  #endif                                  pszToken,
102                                    cchToken,
103                                    pClient->pvData) != LSCP_OK) {
104                                pClient->evt.iState = 0;
105                            }
106                      }                      }
107                  }                  }
                 // Done with life proof.  
108              } else {              } else {
109                  //                  lscp_socket_perror("_lscp_client_evt_proc: recv");
110                  if ((*pClient->pfnCallback)(                  pClient->evt.iState = 0;
                         pClient,  
                         achBuffer,  
                         cchBuffer,  
                         pClient->pvData) != LSCP_OK) {  
                     pClient->udp.iState = 0;  
                 }  
111              }              }
112          } else {          }   // Check if select has in error.
113              lscp_socket_perror("_lscp_client_udp_proc: recvfrom");          else if (iSelect < 0) {
114              pClient->udp.iState = 0;              lscp_socket_perror("_lscp_client_evt_proc: select");
115                pClient->evt.iState = 0;
116          }          }
117            
118            // Finally, always signal the event.
119            lscp_cond_signal(pClient->cond);
120        }
121    
122    #ifdef DEBUG
123        fprintf(stderr, "_lscp_client_evt_proc: Client closing.\n");
124    #endif
125    }
126    
127    
128    //-------------------------------------------------------------------------
129    // Event subscription helpers.
130    
131    // Open the event service socket connection.
132    static lscp_status_t _lscp_client_evt_connect ( lscp_client_t *pClient )
133    {
134        lscp_socket_t sock;
135        struct sockaddr_in addr;
136        int cAddr;
137    #if defined(WIN32)
138        int iSockOpt = (-1);
139    #endif
140    
141        // Prepare the event connection socket...
142        sock = socket(AF_INET, SOCK_STREAM, 0);
143        if (sock == INVALID_SOCKET) {
144            lscp_socket_perror("_lscp_client_evt_connect: socket");
145            return LSCP_FAILED;
146      }      }
147    
148    #if defined(WIN32)
149        if (setsockopt(sock, SOL_SOCKET, SO_DONTLINGER, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR)
150            lscp_socket_perror("lscp_client_evt_connect: setsockopt(SO_DONTLINGER)");
151    #endif
152    
153  #ifdef DEBUG  #ifdef DEBUG
154      fprintf(stderr, "_lscp_client_udp_proc: Client closing.\n");      lscp_socket_getopts("_lscp_client_evt_connect:", sock);
155  #endif  #endif
156    
157        // Use same address of the command connection.
158        cAddr = sizeof(struct sockaddr_in);
159        memmove((char *) &addr, &(pClient->cmd.addr), cAddr);
160    
161        // Start the connection...
162        if (connect(sock, (struct sockaddr *) &addr, cAddr) == SOCKET_ERROR) {
163            lscp_socket_perror("_lscp_client_evt_connect: connect");
164            closesocket(sock);
165            return LSCP_FAILED;
166        }
167        
168        // Set our socket agent struct...
169        lscp_socket_agent_init(&(pClient->evt), sock, &addr, cAddr);
170        
171        // And finally the service thread...
172        return lscp_socket_agent_start(&(pClient->evt), _lscp_client_evt_proc, pClient, 0);
173    }
174    
175    
176    // Subscribe to a single event.
177    static lscp_status_t _lscp_client_evt_request ( lscp_client_t *pClient, int iSubscribe, lscp_event_t event )
178    {
179        const char *pszEvent;
180        char  szQuery[LSCP_BUFSIZ];
181        int   cchQuery;
182    
183        if (pClient == NULL)
184            return LSCP_FAILED;
185    
186        // Which (single) event?
187        pszEvent = lscp_event_to_text(event);
188        if (pszEvent == NULL)
189            return LSCP_FAILED;
190    
191        // Build the query string...
192        cchQuery = sprintf(szQuery, "%sSUBSCRIBE %s\n\n", (iSubscribe == 0 ? "UN" : ""), pszEvent);
193        // Just send data, forget result...
194        if (send(pClient->evt.sock, szQuery, cchQuery, 0) < cchQuery) {
195            lscp_socket_perror("_lscp_client_evt_request: send");
196            return LSCP_FAILED;
197        }
198    
199        // Wait on response.
200        lscp_cond_wait(pClient->cond, pClient->mutex);
201        
202        // Update as naively as we can...
203        if (iSubscribe)
204            pClient->events |=  event;
205        else
206            pClient->events &= ~event;
207    
208        return LSCP_OK;
209  }  }
210    
211    
# Line 155  lscp_client_t* lscp_client_create ( cons Line 247  lscp_client_t* lscp_client_create ( cons
247      lscp_socket_t sock;      lscp_socket_t sock;
248      struct sockaddr_in addr;      struct sockaddr_in addr;
249      int cAddr;      int cAddr;
250    #if defined(WIN32)
251      int iSockOpt = (-1);      int iSockOpt = (-1);
252    #endif
253    
254      if (pfnCallback == NULL) {      if (pfnCallback == NULL) {
255          fprintf(stderr, "lscp_client_create: Invalid client callback function.\n");          fprintf(stderr, "lscp_client_create: Invalid client callback function.\n");
# Line 164  lscp_client_t* lscp_client_create ( cons Line 258  lscp_client_t* lscp_client_create ( cons
258    
259      pHost = gethostbyname(pszHost);      pHost = gethostbyname(pszHost);
260      if (pHost == NULL) {      if (pHost == NULL) {
261          lscp_socket_perror("lscp_client_create: gethostbyname");          lscp_socket_herror("lscp_client_create: gethostbyname");
262          return NULL;          return NULL;
263      }      }
264    
# Line 184  lscp_client_t* lscp_client_create ( cons Line 278  lscp_client_t* lscp_client_create ( cons
278      fprintf(stderr, "lscp_client_create: pClient=%p: pszHost=%s iPort=%d.\n", pClient, pszHost, iPort);      fprintf(stderr, "lscp_client_create: pClient=%p: pszHost=%s iPort=%d.\n", pClient, pszHost, iPort);
279  #endif  #endif
280    
281      // Prepare the TCP connection socket...      // Prepare the command connection socket...
282    
283      sock = socket(AF_INET, SOCK_STREAM, 0);      sock = socket(AF_INET, SOCK_STREAM, 0);
284      if (sock == INVALID_SOCKET) {      if (sock == INVALID_SOCKET) {
285          lscp_socket_perror("lscp_client_create: tcp: socket");          lscp_socket_perror("lscp_client_create: cmd: socket");
286          free(pClient);          free(pClient);
287          return NULL;          return NULL;
288      }      }
289    
290  #if defined(WIN32)  #if defined(WIN32)
291      if (setsockopt(sock, SOL_SOCKET, SO_DONTLINGER, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR)      if (setsockopt(sock, SOL_SOCKET, SO_DONTLINGER, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR)
292          lscp_socket_perror("lscp_client_create: tcp: setsockopt(SO_DONTLINGER)");          lscp_socket_perror("lscp_client_create: cmd: setsockopt(SO_DONTLINGER)");
293  #endif  #endif
294    
295  #ifdef DEBUG  #ifdef DEBUG
296      lscp_socket_getopts("lscp_client_create: tcp", sock);      lscp_socket_getopts("lscp_client_create: cmd", sock);
297  #endif  #endif
298    
299      cAddr = sizeof(struct sockaddr_in);      cAddr = sizeof(struct sockaddr_in);
# Line 209  lscp_client_t* lscp_client_create ( cons Line 303  lscp_client_t* lscp_client_create ( cons
303      addr.sin_port = htons((short) iPort);      addr.sin_port = htons((short) iPort);
304    
305      if (connect(sock, (struct sockaddr *) &addr, cAddr) == SOCKET_ERROR) {      if (connect(sock, (struct sockaddr *) &addr, cAddr) == SOCKET_ERROR) {
306          lscp_socket_perror("lscp_client_create: tcp: connect");          lscp_socket_perror("lscp_client_create: cmd: connect");
         closesocket(sock);  
         free(pClient);  
         return NULL;  
     }  
   
     lscp_socket_agent_init(&(pClient->tcp), sock, &addr, cAddr);  
   
 #ifdef DEBUG  
     fprintf(stderr, "lscp_client_create: tcp: pClient=%p: sock=%d addr=%s port=%d.\n", pClient, pClient->tcp.sock, inet_ntoa(pClient->tcp.addr.sin_addr), ntohs(pClient->tcp.addr.sin_port));  
 #endif  
   
     // Prepare the UDP datagram service socket...  
   
     sock = socket(AF_INET, SOCK_DGRAM, 0);  
     if (sock == INVALID_SOCKET) {  
         lscp_socket_perror("lscp_client_create: udp: socket");  
         lscp_socket_agent_free(&(pClient->tcp));  
         free(pClient);  
         return NULL;  
     }  
   
     if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR)  
         lscp_socket_perror("lscp_client_create: udp: setsockopt(SO_REUSEADDR)");  
   
 #ifdef DEBUG  
     lscp_socket_getopts("lscp_client_create: udp", sock);  
 #endif  
   
     cAddr = sizeof(struct sockaddr_in);  
     memset((char *) &addr, 0, cAddr);  
     addr.sin_family = AF_INET;  
     addr.sin_addr.s_addr = htonl(INADDR_ANY);  
     addr.sin_port = htons(0);  
   
     if (bind(sock, (const struct sockaddr *) &addr, cAddr) == SOCKET_ERROR) {  
         lscp_socket_perror("lscp_client_create: udp: bind");  
         lscp_socket_agent_free(&(pClient->tcp));  
307          closesocket(sock);          closesocket(sock);
308          free(pClient);          free(pClient);
309          return NULL;          return NULL;
310      }      }
311    
312      if (getsockname(sock, (struct sockaddr *) &addr, &cAddr) == SOCKET_ERROR) {      // Initialize the command socket agent struct...
313          lscp_socket_perror("lscp_client_create: udp: getsockname");      lscp_socket_agent_init(&(pClient->cmd), sock, &addr, cAddr);
         lscp_socket_agent_free(&(pClient->tcp));  
         closesocket(sock);  
         free(pClient);  
         return NULL;  
     }  
   
     lscp_socket_agent_init(&(pClient->udp), sock, &addr, cAddr);  
314    
315  #ifdef DEBUG  #ifdef DEBUG
316      fprintf(stderr, "lscp_client_create: udp: pClient=%p: sock=%d addr=%s port=%d.\n", pClient, pClient->udp.sock, inet_ntoa(pClient->udp.addr.sin_addr), ntohs(pClient->udp.addr.sin_port));      fprintf(stderr, "lscp_client_create: cmd: pClient=%p: sock=%d addr=%s port=%d.\n", pClient, pClient->cmd.sock, inet_ntoa(pClient->cmd.addr.sin_addr), ntohs(pClient->cmd.addr.sin_port));
317  #endif  #endif
318    
319      // No session id, yet.      // Initialize the event service socket struct...
320      pClient->sessid = NULL;      lscp_socket_agent_init(&(pClient->evt), INVALID_SOCKET, NULL, 0);
321        // No events subscribed, yet.
322        pClient->events = LSCP_EVENT_NONE;
323      // Initialize cached members.      // Initialize cached members.
324      pClient->audio_drivers = NULL;      pClient->audio_drivers = NULL;
325      pClient->midi_drivers = NULL;      pClient->midi_drivers = NULL;
326        pClient->audio_devices = NULL;
327        pClient->midi_devices = NULL;
328      pClient->engines = NULL;      pClient->engines = NULL;
329      lscp_driver_info_init(&(pClient->audio_info));      pClient->channels = NULL;
330      lscp_driver_info_init(&(pClient->midi_info));      lscp_driver_info_init(&(pClient->audio_driver_info));
331        lscp_driver_info_init(&(pClient->midi_driver_info));
332        lscp_device_info_init(&(pClient->audio_device_info));
333        lscp_device_info_init(&(pClient->midi_device_info));
334        lscp_param_info_init(&(pClient->audio_param_info));
335        lscp_param_info_init(&(pClient->midi_param_info));
336        lscp_device_port_info_init(&(pClient->audio_channel_info));
337        lscp_device_port_info_init(&(pClient->midi_port_info));
338        lscp_param_info_init(&(pClient->audio_channel_param_info));
339        lscp_param_info_init(&(pClient->midi_port_param_info));
340      lscp_engine_info_init(&(pClient->engine_info));      lscp_engine_info_init(&(pClient->engine_info));
341      lscp_channel_info_init(&(pClient->channel_info));      lscp_channel_info_init(&(pClient->channel_info));
342      // Initialize error stuff.      // Initialize error stuff.
# Line 287  lscp_client_t* lscp_client_create ( cons Line 350  lscp_client_t* lscp_client_create ( cons
350    
351      // Initialize the transaction mutex.      // Initialize the transaction mutex.
352      lscp_mutex_init(pClient->mutex);      lscp_mutex_init(pClient->mutex);
353        lscp_cond_init(pClient->cond);
     // Now's finally time to startup threads...  
     // UDP service thread...  
     if (lscp_socket_agent_start(&(pClient->udp), _lscp_client_udp_proc, pClient, 0) != LSCP_OK) {  
         lscp_socket_agent_free(&(pClient->tcp));  
         lscp_socket_agent_free(&(pClient->udp));  
         lscp_mutex_destroy(pClient->mutex);  
         free(pClient);  
         return NULL;  
     }  
354    
355      // Finally we've some success...      // Finally we've some success...
356      return pClient;      return pClient;
# Line 317  lscp_status_t lscp_client_join ( lscp_cl Line 371  lscp_status_t lscp_client_join ( lscp_cl
371      fprintf(stderr, "lscp_client_join: pClient=%p.\n", pClient);      fprintf(stderr, "lscp_client_join: pClient=%p.\n", pClient);
372  #endif  #endif
373    
374  //  lscp_socket_agent_join(&(pClient->udp));  //  lscp_socket_agent_join(&(pClient->evt));
375      lscp_socket_agent_join(&(pClient->tcp));      lscp_socket_agent_join(&(pClient->cmd));
376    
377      return LSCP_OK;      return LSCP_OK;
378  }  }
# Line 340  lscp_status_t lscp_client_destroy ( lscp Line 394  lscp_status_t lscp_client_destroy ( lscp
394      fprintf(stderr, "lscp_client_destroy: pClient=%p.\n", pClient);      fprintf(stderr, "lscp_client_destroy: pClient=%p.\n", pClient);
395  #endif  #endif
396    
397      // Free session-id, if any.      // Lock this section up.
398      if (pClient->sessid)      lscp_mutex_lock(pClient->mutex);
399          free(pClient->sessid);      
     pClient->sessid = NULL;  
400      // Free up all cached members.      // Free up all cached members.
401      lscp_channel_info_reset(&(pClient->channel_info));      lscp_channel_info_free(&(pClient->channel_info));
402      lscp_engine_info_reset(&(pClient->engine_info));      lscp_engine_info_free(&(pClient->engine_info));
403      lscp_driver_info_reset(&(pClient->midi_info));      lscp_param_info_free(&(pClient->midi_port_param_info));
404      lscp_driver_info_reset(&(pClient->audio_info));      lscp_param_info_free(&(pClient->audio_channel_param_info));
405        lscp_device_port_info_free(&(pClient->midi_port_info));
406        lscp_device_port_info_free(&(pClient->audio_channel_info));
407        lscp_param_info_free(&(pClient->midi_param_info));
408        lscp_param_info_free(&(pClient->audio_param_info));
409        lscp_device_info_free(&(pClient->midi_device_info));
410        lscp_device_info_free(&(pClient->audio_device_info));
411        lscp_driver_info_free(&(pClient->midi_driver_info));
412        lscp_driver_info_free(&(pClient->audio_driver_info));
413      // Free available engine table.      // Free available engine table.
414      lscp_szsplit_destroy(pClient->audio_drivers);      lscp_szsplit_destroy(pClient->audio_drivers);
415      lscp_szsplit_destroy(pClient->midi_drivers);      lscp_szsplit_destroy(pClient->midi_drivers);
416        lscp_isplit_destroy(pClient->audio_devices);
417        lscp_isplit_destroy(pClient->midi_devices);
418      lscp_szsplit_destroy(pClient->engines);      lscp_szsplit_destroy(pClient->engines);
419        lscp_isplit_destroy(pClient->channels);
420      // Make them null.      // Make them null.
421      pClient->audio_drivers = NULL;      pClient->audio_drivers = NULL;
422      pClient->midi_drivers = NULL;      pClient->midi_drivers = NULL;
423      pClient->engines = NULL;      pClient->engines = NULL;
424      // Free result error stuff.      // Free result error stuff.
425      _lscp_client_set_result(pClient, NULL, 0);      lscp_client_set_result(pClient, NULL, 0);
426      // Frre stream usage stuff.      // Free stream usage stuff.
427      if (pClient->buffer_fill)      if (pClient->buffer_fill)
428          free(pClient->buffer_fill);          free(pClient->buffer_fill);
429      pClient->buffer_fill = NULL;      pClient->buffer_fill = NULL;
# Line 367  lscp_status_t lscp_client_destroy ( lscp Line 431  lscp_status_t lscp_client_destroy ( lscp
431      pClient->iTimeout = 0;      pClient->iTimeout = 0;
432    
433      // Free socket agents.      // Free socket agents.
434      lscp_socket_agent_free(&(pClient->udp));      lscp_socket_agent_free(&(pClient->evt));
435      lscp_socket_agent_free(&(pClient->tcp));      lscp_socket_agent_free(&(pClient->cmd));
436    
437      // Last but not least, free good ol'transaction mutex.      // Last but not least, free good ol'transaction mutex.
438        lscp_mutex_unlock(pClient->mutex);
439      lscp_mutex_destroy(pClient->mutex);      lscp_mutex_destroy(pClient->mutex);
440        lscp_cond_destroy(pClient->cond);
441    
442      free(pClient);      free(pClient);
443    
# Line 418  int lscp_client_get_timeout ( lscp_clien Line 484  int lscp_client_get_timeout ( lscp_clien
484  //-------------------------------------------------------------------------  //-------------------------------------------------------------------------
485  // Client common protocol functions.  // Client common protocol functions.
486    
   
487  /**  /**
488   *  Submit a command query line string to the server. The query string   *  Submit a command query line string to the server. The query string
489   *  must be cr/lf and null terminated. Besides the return code, the   *  must be cr/lf and null terminated. Besides the return code, the
# Line 434  int lscp_client_get_timeout ( lscp_clien Line 499  int lscp_client_get_timeout ( lscp_clien
499   */   */
500  lscp_status_t lscp_client_query ( lscp_client_t *pClient, const char *pszQuery )  lscp_status_t lscp_client_query ( lscp_client_t *pClient, const char *pszQuery )
501  {  {
502      fd_set fds;                         // File descriptor list for select().      lscp_status_t ret;
503      int    fd, fdmax;                   // Maximum file descriptor number.      
     struct timeval tv;                  // For specifying a timeout value.  
     int    iSelect;                     // Holds select return status.  
     int    iTimeout;  
     int    cchQuery;  
     char   achResult[LSCP_BUFSIZ];  
     int    cchResult;  
     const  char *pszSeps = ":[]";  
     char  *pszResult;  
     char  *pszToken;  
     char  *pch;  
     int    iErrno;  
   
     lscp_status_t ret = LSCP_FAILED;  
   
     if (pClient == NULL)  
         return ret;  
   
504      // Lock this section up.      // Lock this section up.
505      lscp_mutex_lock(pClient->mutex);      lscp_mutex_lock(pClient->mutex);
506    
507      pszResult = NULL;      // Just make the now guarded call.
508      iErrno = -1;      ret = lscp_client_call(pClient, pszQuery);
509        
510      // Send data, and then, wait for the result...      // Unlock this section down.
     cchQuery = strlen(pszQuery);  
     if (send(pClient->tcp.sock, pszQuery, cchQuery, 0) < cchQuery) {  
         lscp_socket_perror("lscp_client_query: send");  
         lscp_mutex_unlock(pClient->mutex);  
         return ret;  
     }  
   
     // Prepare for waiting on select...  
     fd = (int) pClient->tcp.sock;  
     FD_ZERO(&fds);  
     FD_SET((unsigned int) fd, &fds);  
     fdmax = fd;  
   
     // Use the timeout select feature...  
     iTimeout = pClient->iTimeout;  
     if (iTimeout > 1000) {  
         tv.tv_sec = iTimeout / 1000;  
         iTimeout -= tv.tv_sec * 1000;  
     }  
     else tv.tv_sec = 0;  
     tv.tv_usec = iTimeout * 1000;  
   
     // Wait for event...  
     iSelect = select(fdmax + 1, &fds, NULL, NULL, &tv);  
     if (iSelect > 0 && FD_ISSET(fd, &fds)) {  
         // May recv now...  
         cchResult = recv(pClient->tcp.sock, achResult, sizeof(achResult), 0);  
         if (cchResult > 0) {  
             // Assume early success.  
             ret = LSCP_OK;  
             // Always force the result to be null terminated (and trim trailing CRLFs)!  
             while (cchResult > 0 && (achResult[cchResult - 1] == '\n' || achResult[cchResult- 1] == '\r'))  
                 cchResult--;  
             achResult[cchResult] = (char) 0;  
             // Check if the response it's an error or warning message.  
             if (strncasecmp(achResult, "WRN:", 4) == 0)  
                 ret = LSCP_WARNING;  
             else if (strncasecmp(achResult, "ERR:", 4) == 0)  
                 ret = LSCP_ERROR;  
             // So we got a result...  
             if (ret == LSCP_OK) {  
                 // Reset errno in case of success.  
                 iErrno = 0;  
                 // Is it a special successful response?  
                 if (strncasecmp(achResult, "OK[", 3) == 0) {  
                     // Parse the OK message, get the return string under brackets...  
                     pszToken = lscp_strtok(achResult, pszSeps, &(pch));  
                     if (pszToken)  
                         pszResult = lscp_strtok(NULL, pszSeps, &(pch));  
                 }  
                 else pszResult = achResult;  
                 // The result string is now set to the command response, if any.  
             } else {  
                 // Parse the error/warning message, skip first colon...  
                 pszToken = lscp_strtok(achResult, pszSeps, &(pch));  
                 if (pszToken) {  
                     // Get the error number...  
                     pszToken = lscp_strtok(NULL, pszSeps, &(pch));  
                     if (pszToken) {  
                         iErrno = atoi(pszToken);  
                         // And make the message text our final result.  
                         pszResult = lscp_strtok(NULL, pszSeps, &(pch));  
                     }  
                 }  
                 // The result string is set to the error/warning message text.  
             }  
         }  
         else if (cchResult == 0) {  
             // Fake a result message.  
             pszResult = "Server terminated the connection";  
             ret = LSCP_QUIT;  
         }  
         else lscp_socket_perror("lscp_client_query: recv");  
     }   // Check if select has timed out.  
     else if (iSelect == 0) {  
         // Fake a result message.  
         pszResult = "Timeout during receive operation";  
         ret = LSCP_TIMEOUT;  
     }  
     else lscp_socket_perror("lscp_client_query: select");  
   
     // Make the result official...  
     _lscp_client_set_result(pClient, pszResult, iErrno);  
   
     // Can go on with it...  
511      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
512        
513      return ret;      return ret;
514  }  }
515    
   
516  /**  /**
517   *  Get the last received result string. In case of error or warning,   *  Get the last received result string. In case of error or warning,
518   *  this is the text of the error or warning message issued.   *  this is the text of the error or warning message issued.
# Line 590  int lscp_client_get_errno ( lscp_client_ Line 552  int lscp_client_get_errno ( lscp_client_
552  // Client registration protocol functions.  // Client registration protocol functions.
553    
554  /**  /**
555   *  Register frontend for receiving UDP event messages:   *  Register frontend for receiving event messages:
556   *  SUBSCRIBE NOTIFICATION <udp-port>   *  SUBSCRIBE CHANNELS | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL
557     *      | CHANNEL_INFO | MISCELLANEOUS
558   *   *
559   *  @param pClient  Pointer to client instance structure.   *  @param pClient  Pointer to client instance structure.
560     *  @param events   Bit-wise OR'ed event flags to subscribe.
561   *   *
562   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
563   */   */
564  lscp_status_t lscp_client_subscribe ( lscp_client_t *pClient )  lscp_status_t lscp_client_subscribe ( lscp_client_t *pClient, lscp_event_t events )
565  {  {
566      lscp_status_t ret;      lscp_status_t ret = LSCP_FAILED;
     char szQuery[LSCP_BUFSIZ];  
     const char *pszResult;  
     const char *pszSeps = "[]";  
     char *pszToken;  
     char *pch;  
567    
568      if (pClient == NULL || pClient->sessid)      if (pClient == NULL)
569          return LSCP_FAILED;          return LSCP_FAILED;
570    
571      sprintf(szQuery, "SUBSCRIBE NOTIFICATION %d\r\n", ntohs(pClient->udp.addr.sin_port));      // Lock this section up.
572      ret = lscp_client_query(pClient, szQuery);      lscp_mutex_lock(pClient->mutex);
573      if (ret == LSCP_OK) {  
574          pszResult = lscp_client_get_result(pClient);      // If applicable, start the alternate connection...
575  #ifdef DEBUG      if (pClient->events == LSCP_EVENT_NONE)
576          fprintf(stderr, "lscp_client_subscribe: %s\n", pszResult);          ret = _lscp_client_evt_connect(pClient);
577  #endif      
578          // Check for the session-id on "OK[sessid]" response.      // Send the subscription commands.
579          pszToken = lscp_strtok(pszResult, pszSeps, &(pch));      if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNELS))
580          if (pszToken && strcasecmp(pszToken, "OK") == 0) {          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNELS);
581              pszToken = lscp_strtok(NULL, pszSeps, &(pch));      if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT))
582              if (pszToken)          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_VOICE_COUNT);
583                  pClient->sessid = strdup(pszToken);      if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT))
584          }          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_STREAM_COUNT);
585      }      if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL))
586            ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_BUFFER_FILL);
587        if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO))
588            ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNEL_INFO);
589        if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS))
590            ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_MISCELLANEOUS);
591    
592        // Unlock this section down.
593        lscp_mutex_unlock(pClient->mutex);
594    
595      return ret;      return ret;
596  }  }
597    
598    
599  /**  /**
600   *  Deregister frontend for not receiving UDP event messages anymore:   *  Deregister frontend from receiving UDP event messages anymore:
601   *  UNSUBSCRIBE NOTIFICATION <session-id>   *  SUBSCRIBE CHANNELS | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL
602     *      | CHANNEL_INFO | MISCELLANEOUS
603   *   *
604   *  @param pClient  Pointer to client instance structure.   *  @param pClient  Pointer to client instance structure.
605     *  @param events   Bit-wise OR'ed event flags to unsubscribe.
606   *   *
607   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
608   */   */
609  lscp_status_t lscp_client_unsubscribe ( lscp_client_t *pClient )  lscp_status_t lscp_client_unsubscribe ( lscp_client_t *pClient, lscp_event_t events )
610  {  {
611      lscp_status_t ret;      lscp_status_t ret = LSCP_OK;
     char szQuery[LSCP_BUFSIZ];  
612    
613      if (pClient == NULL)      if (pClient == NULL)
614          return LSCP_FAILED;          return LSCP_FAILED;
     if (pClient->sessid == NULL)  
         return LSCP_FAILED;  
615    
616      sprintf(szQuery, "UNSUBSCRIBE NOTIFICATION %s\n\n", pClient->sessid);      // Lock this section up.
617      ret = lscp_client_query(pClient, szQuery);      lscp_mutex_lock(pClient->mutex);
618      if (ret == LSCP_OK) {  
619  #ifdef DEBUG      // Send the unsubscription commands.
620          fprintf(stderr, "lscp_client_unsubscribe: %s\n", lscp_client_get_result(pClient));      if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNELS))
621  #endif          ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNELS);
622          // Bail out session-id string.      if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT))
623          free(pClient->sessid);          ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_VOICE_COUNT);
624          pClient->sessid = NULL;      if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT))
625      }          ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_STREAM_COUNT);
626        if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL))
627            ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_BUFFER_FILL);
628        if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO))
629            ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNEL_INFO);
630        if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS))
631            ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_MISCELLANEOUS);
632    
633        // If necessary, close the alternate connection...
634        if (pClient->events == LSCP_EVENT_NONE)
635            lscp_socket_agent_free(&(pClient->evt));
636    
637        // Unlock this section down.
638        lscp_mutex_unlock(pClient->mutex);
639    
640      return ret;      return ret;
641  }  }
642    
643    
644    /**
645     *  Getting current subscribed events.
646     *
647     *  @param pClient  Pointer to client instance structure.
648     *
649     *  @returns The current subscrived bit-wise OR'ed event flags.
650     */
651    lscp_event_t lscp_client_get_events ( lscp_client_t *pClient )
652    {
653        if (pClient == NULL)
654            return LSCP_EVENT_NONE;
655    
656        return pClient->events;
657    }
658    
659    
660  //-------------------------------------------------------------------------  //-------------------------------------------------------------------------
661  // Client command protocol functions.  // Client command protocol functions.
662    
# Line 683  lscp_status_t lscp_load_instrument ( lsc Line 678  lscp_status_t lscp_load_instrument ( lsc
678      if (pszFileName == NULL || iSamplerChannel < 0)      if (pszFileName == NULL || iSamplerChannel < 0)
679          return LSCP_FAILED;          return LSCP_FAILED;
680    
681      sprintf(szQuery, "LOAD INSTRUMENT %s %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel);      sprintf(szQuery, "LOAD INSTRUMENT '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel);
682        return lscp_client_query(pClient, szQuery);
683    }
684    
685    
686    /**
687     *  Loading an instrument in the background (non modal):
688     *  LOAD INSTRUMENT NON_MODAL <filename> <instr-index> <sampler-channel>
689     *
690     *  @param pClient          Pointer to client instance structure.
691     *  @param pszFileName      Instrument file name.
692     *  @param iInstrIndex      Instrument index number.
693     *  @param iSamplerChannel  Sampler Channel.
694     *
695     *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
696     */
697    lscp_status_t lscp_load_instrument_non_modal ( lscp_client_t *pClient, const char *pszFileName, int iInstrIndex, int iSamplerChannel )
698    {
699        char szQuery[LSCP_BUFSIZ];
700    
701        if (pszFileName == NULL || iSamplerChannel < 0)
702            return LSCP_FAILED;
703    
704        sprintf(szQuery, "LOAD INSTRUMENT NON_MODAL '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel);
705      return lscp_client_query(pClient, szQuery);      return lscp_client_query(pClient, szQuery);
706  }  }
707    
# Line 722  lscp_status_t lscp_load_engine ( lscp_cl Line 740  lscp_status_t lscp_load_engine ( lscp_cl
740  int lscp_get_channels ( lscp_client_t *pClient )  int lscp_get_channels ( lscp_client_t *pClient )
741  {  {
742      int iChannels = -1;      int iChannels = -1;
743      if (lscp_client_query(pClient, "GET CHANNELS\r\n") == LSCP_OK)  
744        // Lock this section up.
745        lscp_mutex_lock(pClient->mutex);
746    
747        if (lscp_client_call(pClient, "GET CHANNELS\r\n") == LSCP_OK)
748          iChannels = atoi(lscp_client_get_result(pClient));          iChannels = atoi(lscp_client_get_result(pClient));
749    
750        // Unlock this section doen.
751        lscp_mutex_unlock(pClient->mutex);
752    
753      return iChannels;      return iChannels;
754  }  }
755    
756    
757  /**  /**
758     *  List current sampler channels number identifiers:
759     *  LIST CHANNELS
760     *
761     *  @param pClient  Pointer to client instance structure.
762     *
763     *  @returns An array of the sampler channels identifiers as positive integers,
764     *  terminated with -1 on success, NULL otherwise.
765     */
766    int *lscp_list_channels ( lscp_client_t *pClient )
767    {
768        const char *pszSeps = ",";
769    
770        if (pClient == NULL)
771            return NULL;
772            
773        // Lock this section up.
774        lscp_mutex_lock(pClient->mutex);
775    
776        if (pClient->channels) {
777            lscp_isplit_destroy(pClient->channels);
778            pClient->channels = NULL;
779        }
780    
781        if (lscp_client_call(pClient, "LIST CHANNELS\r\n") == LSCP_OK)
782            pClient->channels = lscp_isplit_create(lscp_client_get_result(pClient), pszSeps);
783    
784        // Unlock this section down.
785        lscp_mutex_unlock(pClient->mutex);
786    
787        return pClient->channels;
788    }
789    
790    
791    /**
792   *  Adding a new sampler channel:   *  Adding a new sampler channel:
793   *  ADD CHANNEL   *  ADD CHANNEL
794   *   *
# Line 740  int lscp_get_channels ( lscp_client_t *p Line 800  int lscp_get_channels ( lscp_client_t *p
800  int lscp_add_channel ( lscp_client_t *pClient )  int lscp_add_channel ( lscp_client_t *pClient )
801  {  {
802      int iSamplerChannel = -1;      int iSamplerChannel = -1;
803      if (lscp_client_query(pClient, "ADD CHANNEL\r\n") == LSCP_OK)  
804        // Lock this section up.
805        lscp_mutex_lock(pClient->mutex);
806    
807        if (lscp_client_call(pClient, "ADD CHANNEL\r\n") == LSCP_OK)
808          iSamplerChannel = atoi(lscp_client_get_result(pClient));          iSamplerChannel = atoi(lscp_client_get_result(pClient));
809            
810        // Unlock this section down.
811        lscp_mutex_unlock(pClient->mutex);
812    
813      return iSamplerChannel;      return iSamplerChannel;
814  }  }
815    
# Line 768  lscp_status_t lscp_remove_channel ( lscp Line 836  lscp_status_t lscp_remove_channel ( lscp
836    
837    
838  /**  /**
839   *  Getting all available engines:   *  Getting all available engines count:
840   *  GET AVAILABLE_ENGINES   *  GET AVAILABLE_ENGINES
841   *   *
842   *  @param pClient  Pointer to client instance structure.   *  @param pClient  Pointer to client instance structure.
843   *   *
844     *  @returns The current total number of sampler engines on success,
845     *  -1 otherwise.
846     */
847    int lscp_get_available_engines ( lscp_client_t *pClient )
848    {
849            int iAvailableEngines = -1;
850    
851        // Lock this section up.
852        lscp_mutex_lock(pClient->mutex);
853    
854        if (lscp_client_call(pClient, "GET AVAILABLE_ENGINES\r\n") == LSCP_OK)
855            iAvailableEngines = atoi(lscp_client_get_result(pClient));
856    
857        // Unlock this section down.
858        lscp_mutex_unlock(pClient->mutex);
859    
860        return iAvailableEngines;
861    }
862    
863    
864    /**
865     *  Getting all available engines:
866     *  LIST AVAILABLE_ENGINES
867     *
868     *  @param pClient  Pointer to client instance structure.
869     *
870   *  @returns A NULL terminated array of engine name strings,   *  @returns A NULL terminated array of engine name strings,
871   *  or NULL in case of failure.   *  or NULL in case of failure.
872   */   */
873  const char **lscp_get_available_engines ( lscp_client_t *pClient )  const char **lscp_list_available_engines ( lscp_client_t *pClient )
874  {  {
875      const char *pszSeps = ",";      const char *pszSeps = ",";
876    
877        // Lock this section up.
878        lscp_mutex_lock(pClient->mutex);
879    
880      if (pClient->engines) {      if (pClient->engines) {
881          lscp_szsplit_destroy(pClient->engines);          lscp_szsplit_destroy(pClient->engines);
882          pClient->engines = NULL;          pClient->engines = NULL;
883      }      }
884    
885      if (lscp_client_query(pClient, "GET AVAILABLE_ENGINES\r\n") == LSCP_OK)      if (lscp_client_call(pClient, "LIST AVAILABLE_ENGINES\r\n") == LSCP_OK)
886          pClient->engines = lscp_szsplit_create(lscp_client_get_result(pClient), pszSeps);          pClient->engines = lscp_szsplit_create(lscp_client_get_result(pClient), pszSeps);
887    
888        // Unlock this section down.
889        lscp_mutex_unlock(pClient->mutex);
890    
891      return (const char **) pClient->engines;      return (const char **) pClient->engines;
892  }  }
893    
# Line 815  lscp_engine_info_t *lscp_get_engine_info Line 915  lscp_engine_info_t *lscp_get_engine_info
915      if (pszEngineName == NULL)      if (pszEngineName == NULL)
916          return NULL;          return NULL;
917    
918        // Lock this section up.
919        lscp_mutex_lock(pClient->mutex);
920    
921      pEngineInfo = &(pClient->engine_info);      pEngineInfo = &(pClient->engine_info);
922      lscp_engine_info_reset(pEngineInfo);      lscp_engine_info_reset(pEngineInfo);
923    
924      sprintf(szQuery, "GET ENGINE INFO %s\r\n", pszEngineName);      sprintf(szQuery, "GET ENGINE INFO %s\r\n", pszEngineName);
925      if (lscp_client_query(pClient, szQuery) != LSCP_OK)      if (lscp_client_call(pClient, szQuery) == LSCP_OK) {
926          return NULL;          pszResult = lscp_client_get_result(pClient);
927            pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch));
928      pszResult = lscp_client_get_result(pClient);          while (pszToken) {
929      pszToken = lscp_strtok(pszResult, pszSeps, &(pch));              if (strcasecmp(pszToken, "DESCRIPTION") == 0) {
930      while (pszToken) {                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
931          if (strcasecmp(pszToken, "DESCRIPTION") == 0) {                  if (pszToken)
932              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                      lscp_unquote_dup(&(pEngineInfo->description), &pszToken);
933              if (pszToken)              }
934                  pEngineInfo->description = lscp_unquote(&pszToken, 1);              else if (strcasecmp(pszToken, "VERSION") == 0) {
935          }                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
936          else if (strcasecmp(pszToken, "VERSION") == 0) {                  if (pszToken)
937              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                      lscp_unquote_dup(&(pEngineInfo->version), &pszToken);
938              if (pszToken)              }
939                  pEngineInfo->version = lscp_unquote(&pszToken, 1);              pszToken = lscp_strtok(NULL, pszSeps, &(pch));
940          }          }
         pszToken = lscp_strtok(NULL, pszSeps, &(pch));  
941      }      }
942        else pEngineInfo = NULL;
943        
944        // Unlock this section down.
945        lscp_mutex_unlock(pClient->mutex);
946    
947      return pEngineInfo;      return pEngineInfo;
948  }  }
# Line 865  lscp_channel_info_t *lscp_get_channel_in Line 971  lscp_channel_info_t *lscp_get_channel_in
971      if (iSamplerChannel < 0)      if (iSamplerChannel < 0)
972          return NULL;          return NULL;
973    
974        // Lock this section up.
975        lscp_mutex_lock(pClient->mutex);
976        
977      pChannelInfo = &(pClient->channel_info);      pChannelInfo = &(pClient->channel_info);
978      lscp_channel_info_reset(pChannelInfo);      lscp_channel_info_reset(pChannelInfo);
979    
980      sprintf(szQuery, "GET CHANNEL INFO %d\r\n", iSamplerChannel);      sprintf(szQuery, "GET CHANNEL INFO %d\r\n", iSamplerChannel);
981      if (lscp_client_query(pClient, szQuery) != LSCP_OK)      if (lscp_client_call(pClient, szQuery) == LSCP_OK) {
982          return NULL;          pszResult = lscp_client_get_result(pClient);
983            pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch));
984      pszResult = lscp_client_get_result(pClient);          while (pszToken) {
985      pszToken = lscp_strtok(pszResult, pszSeps, &(pch));              if (strcasecmp(pszToken, "ENGINE_NAME") == 0) {
986      while (pszToken) {                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
987          if (strcasecmp(pszToken, "ENGINE_NAME") == 0) {                  if (pszToken)
988              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                      lscp_unquote_dup(&(pChannelInfo->engine_name), &pszToken);
989              if (pszToken)              }
990                  pChannelInfo->engine_name = lscp_unquote(&pszToken, 1);              else if (strcasecmp(pszToken, "AUDIO_OUTPUT_DEVICE") == 0) {
991          }                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
992          else if (strcasecmp(pszToken, "AUDIO_OUTPUT_DEVICE") == 0) {                  if (pszToken)
993              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                      pChannelInfo->audio_device = atoi(lscp_ltrim(pszToken));
994              if (pszToken)              }
995                  pChannelInfo->audio_device = atoi(lscp_ltrim(pszToken));              else if (strcasecmp(pszToken, "AUDIO_OUTPUT_CHANNELS") == 0) {
996          }                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
997          else if (strcasecmp(pszToken, "AUDIO_OUTPUT_CHANNELS") == 0) {                  if (pszToken)
998              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                      pChannelInfo->audio_channels = atoi(lscp_ltrim(pszToken));
999              if (pszToken)              }
1000                  pChannelInfo->audio_channels = atoi(lscp_ltrim(pszToken));              else if (strcasecmp(pszToken, "AUDIO_OUTPUT_ROUTING") == 0) {
1001          }                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1002          else if (strcasecmp(pszToken, "AUDIO_OUTPUT_ROUTING") == 0) {                  if (pszToken) {
1003              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                      if (pChannelInfo->audio_routing)
1004              if (pszToken)                          lscp_szsplit_destroy(pChannelInfo->audio_routing);
1005                  pChannelInfo->audio_routing = lscp_szsplit_create(pszToken, ",");                      pChannelInfo->audio_routing = lscp_szsplit_create(pszToken, ",");
1006          }                  }
1007          else if (strcasecmp(pszToken, "INSTRUMENT_FILE") == 0) {              }
1008              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));              else if (strcasecmp(pszToken, "INSTRUMENT_FILE") == 0) {
1009              if (pszToken)                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1010                  pChannelInfo->instrument_file = lscp_unquote(&pszToken, 1);                  if (pszToken)
1011          }                      lscp_unquote_dup(&(pChannelInfo->instrument_file), &pszToken);
1012          else if (strcasecmp(pszToken, "INSTRUMENT_NR") == 0) {              }
1013              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));              else if (strcasecmp(pszToken, "INSTRUMENT_NR") == 0) {
1014              if (pszToken)                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1015                  pChannelInfo->instrument_nr = atoi(lscp_ltrim(pszToken));                  if (pszToken)
1016          }                      pChannelInfo->instrument_nr = atoi(lscp_ltrim(pszToken));
1017          else if (strcasecmp(pszToken, "MIDI_INPUT_DEVICE") == 0) {              }
1018              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));              else if (strcasecmp(pszToken, "INSTRUMENT_NAME") == 0) {
1019              if (pszToken)                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1020                  pChannelInfo->midi_device = atoi(lscp_ltrim(pszToken));                  if (pszToken)
1021          }                      lscp_unquote_dup(&(pChannelInfo->instrument_name), &pszToken);
1022          else if (strcasecmp(pszToken, "MIDI_INPUT_PORT") == 0) {              }
1023              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));              else if (strcasecmp(pszToken, "INSTRUMENT_STATUS") == 0) {
1024              if (pszToken)                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1025                  pChannelInfo->midi_port = atoi(lscp_ltrim(pszToken));                  if (pszToken)
1026          }                      pChannelInfo->instrument_status = atoi(lscp_ltrim(pszToken));
1027          else if (strcasecmp(pszToken, "MIDI_INPUT_CHANNEL") == 0) {              }
1028              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));              else if (strcasecmp(pszToken, "MIDI_INPUT_DEVICE") == 0) {
1029              if (pszToken)                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1030                  pChannelInfo->midi_channel = atoi(lscp_ltrim(pszToken));                  if (pszToken)
1031          }                      pChannelInfo->midi_device = atoi(lscp_ltrim(pszToken));
1032          else if (strcasecmp(pszToken, "VOLUME") == 0) {              }
1033              pszToken = lscp_strtok(NULL, pszCrlf, &(pch));              else if (strcasecmp(pszToken, "MIDI_INPUT_PORT") == 0) {
1034              if (pszToken)                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1035                  pChannelInfo->volume = (float) atof(lscp_ltrim(pszToken));                  if (pszToken)
1036                        pChannelInfo->midi_port = atoi(lscp_ltrim(pszToken));
1037                }
1038                else if (strcasecmp(pszToken, "MIDI_INPUT_CHANNEL") == 0) {
1039                    pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1040                    if (pszToken) {
1041                        pszToken = lscp_ltrim(pszToken);
1042                        if (strcasecmp(pszToken, "ALL") == 0)
1043                            pChannelInfo->midi_channel = LSCP_MIDI_CHANNEL_ALL;
1044                        else
1045                            pChannelInfo->midi_channel = atoi(pszToken);
1046                    }
1047                }
1048                else if (strcasecmp(pszToken, "VOLUME") == 0) {
1049                    pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1050                    if (pszToken)
1051                        pChannelInfo->volume = (float) atof(lscp_ltrim(pszToken));
1052                }
1053                pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1054          }          }
         pszToken = lscp_strtok(NULL, pszSeps, &(pch));  
1055      }      }
1056        else pChannelInfo = NULL;
1057        
1058        // Unlock this section up.
1059        lscp_mutex_unlock(pClient->mutex);
1060    
1061      return pChannelInfo;      return pChannelInfo;
1062  }  }
# Line 949  int lscp_get_channel_voice_count ( lscp_ Line 1079  int lscp_get_channel_voice_count ( lscp_
1079      if (iSamplerChannel < 0)      if (iSamplerChannel < 0)
1080          return iVoiceCount;          return iVoiceCount;
1081    
1082        // Lock this section up.
1083        lscp_mutex_lock(pClient->mutex);
1084    
1085      sprintf(szQuery, "GET CHANNEL VOICE_COUNT %d\r\n", iSamplerChannel);      sprintf(szQuery, "GET CHANNEL VOICE_COUNT %d\r\n", iSamplerChannel);
1086      if (lscp_client_query(pClient, szQuery) == LSCP_OK)      if (lscp_client_call(pClient, szQuery) == LSCP_OK)
1087          iVoiceCount = atoi(lscp_client_get_result(pClient));          iVoiceCount = atoi(lscp_client_get_result(pClient));
1088    
1089        // Unlock this section down.
1090        lscp_mutex_unlock(pClient->mutex);
1091    
1092      return iVoiceCount;      return iVoiceCount;
1093  }  }
1094    
# Line 961  int lscp_get_channel_voice_count ( lscp_ Line 1097  int lscp_get_channel_voice_count ( lscp_
1097   *  Current number of active disk streams:   *  Current number of active disk streams:
1098   *  GET CHANNEL STREAM_COUNT <sampler-channel>   *  GET CHANNEL STREAM_COUNT <sampler-channel>
1099   *   *
1100     *  @param pClient          Pointer to client instance structure.
1101     *  @param iSamplerChannel  Sampler channel number.
1102     *
1103   *  @returns The number of active disk streams on success, -1 otherwise.   *  @returns The number of active disk streams on success, -1 otherwise.
1104   */   */
1105  int lscp_get_channel_stream_count ( lscp_client_t *pClient, int iSamplerChannel )  int lscp_get_channel_stream_count ( lscp_client_t *pClient, int iSamplerChannel )
# Line 971  int lscp_get_channel_stream_count ( lscp Line 1110  int lscp_get_channel_stream_count ( lscp
1110      if (iSamplerChannel < 0)      if (iSamplerChannel < 0)
1111          return iStreamCount;          return iStreamCount;
1112    
1113        // Lock this section up.
1114        lscp_mutex_lock(pClient->mutex);
1115    
1116      sprintf(szQuery, "GET CHANNEL STREAM_COUNT %d\r\n", iSamplerChannel);      sprintf(szQuery, "GET CHANNEL STREAM_COUNT %d\r\n", iSamplerChannel);
1117      if (lscp_client_query(pClient, szQuery) == LSCP_OK)      if (lscp_client_call(pClient, szQuery) == LSCP_OK)
1118          iStreamCount = atoi(lscp_client_get_result(pClient));          iStreamCount = atoi(lscp_client_get_result(pClient));
1119    
1120        // Unlock this section down.
1121        lscp_mutex_unlock(pClient->mutex);
1122    
1123      return iStreamCount;      return iStreamCount;
1124  }  }
1125    
1126    
1127  /**  /**
1128     *  Current least usage of active disk streams.
1129     *
1130     *  @param pClient          Pointer to client instance structure.
1131     *  @param iSamplerChannel  Sampler channel number.
1132     *
1133     *  @returns The usage percentage of the least filled active disk stream
1134     *  on success, -1 otherwise.
1135     */
1136    int lscp_get_channel_stream_usage ( lscp_client_t *pClient, int iSamplerChannel )
1137    {
1138        char szQuery[LSCP_BUFSIZ];
1139        int  iStreamUsage = -1;
1140        const char *pszResult;
1141        const char *pszSeps = "[]%,";
1142        char *pszToken;
1143        char *pch;
1144        int   iStream;
1145        int   iPercent;
1146    
1147        if (iSamplerChannel < 0)
1148            return iStreamUsage;
1149    
1150        // Lock this section up.
1151        lscp_mutex_lock(pClient->mutex);
1152    
1153        iStream = 0;
1154        sprintf(szQuery, "GET CHANNEL BUFFER_FILL PERCENTAGE %d\r\n", iSamplerChannel);
1155        if (lscp_client_call(pClient, szQuery) == LSCP_OK) {
1156            pszResult = lscp_client_get_result(pClient);
1157            pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch));
1158            while (pszToken) {
1159                if (*pszToken) {
1160                    // Skip stream id.
1161                    pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1162                    if (pszToken == NULL)
1163                        break;
1164                    // Get least buffer fill percentage.
1165                    iPercent = atol(pszToken);
1166                    if (iStreamUsage > iPercent || iStream == 0)
1167                        iStreamUsage = iPercent;
1168                    iStream++;
1169                }
1170                pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1171            }
1172        }
1173    
1174        // Unlock this section down.
1175        lscp_mutex_unlock(pClient->mutex);
1176    
1177        return iStreamUsage;
1178    }
1179    
1180    
1181    /**
1182   *  Current fill state of disk stream buffers:   *  Current fill state of disk stream buffers:
1183   *  GET CHANNEL BUFFER_FILL {BYTES|PERCENTAGE} <sampler-channel>   *  GET CHANNEL BUFFER_FILL {BYTES|PERCENTAGE} <sampler-channel>
1184   *   *
# Line 1005  lscp_buffer_fill_t *lscp_get_channel_buf Line 1204  lscp_buffer_fill_t *lscp_get_channel_buf
1204      char *pch;      char *pch;
1205      int   iStream;      int   iStream;
1206    
1207        // Retrieve a channel stream estimation.
1208      iStreamCount = lscp_get_channel_stream_count(pClient, iSamplerChannel);      iStreamCount = lscp_get_channel_stream_count(pClient, iSamplerChannel);
1209        if (pClient->iStreamCount < 0)
1210            return NULL;
1211    
1212        // Lock this section up.
1213        lscp_mutex_lock(pClient->mutex);
1214    
1215        // Check if we need to reallocate the stream usage array.
1216      if (pClient->iStreamCount != iStreamCount) {      if (pClient->iStreamCount != iStreamCount) {
1217          if (pClient->buffer_fill)          if (pClient->buffer_fill)
1218              free(pClient->buffer_fill);              free(pClient->buffer_fill);
# Line 1016  lscp_buffer_fill_t *lscp_get_channel_buf Line 1223  lscp_buffer_fill_t *lscp_get_channel_buf
1223          pClient->iStreamCount = iStreamCount;          pClient->iStreamCount = iStreamCount;
1224      }      }
1225    
     if (pClient->iStreamCount < 1)  
         return NULL;  
   
     iStream = 0;  
     pBufferFill = pClient->buffer_fill;  
   
1226      // Get buffer fill usage...      // Get buffer fill usage...
1227      sprintf(szQuery, "GET CHANNEL BUFFER_FILL %s %d\r\n", pszUsageType, iSamplerChannel);      pBufferFill = pClient->buffer_fill;
1228      if (lscp_client_query(pClient, szQuery) == LSCP_OK) {      if (pBufferFill && iStreamCount > 0) {
1229          pszResult = lscp_client_get_result(pClient);          iStream = 0;
1230          pszToken = lscp_strtok(pszResult, pszSeps, &(pch));          pBufferFill = pClient->buffer_fill;
1231          while (pszToken && iStream < pClient->iStreamCount) {          sprintf(szQuery, "GET CHANNEL BUFFER_FILL %s %d\r\n", pszUsageType, iSamplerChannel);
1232              if (*pszToken) {          if (lscp_client_call(pClient, szQuery) == LSCP_OK) {
1233                  pBufferFill[iStream].stream_id = atol(pszToken);              pszResult = lscp_client_get_result(pClient);
1234                pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch));
1235                while (pszToken && iStream < pClient->iStreamCount) {
1236                    if (*pszToken) {
1237                        pBufferFill[iStream].stream_id = atol(pszToken);
1238                        pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1239                        if (pszToken == NULL)
1240                            break;
1241                        pBufferFill[iStream].stream_usage = atol(pszToken);
1242                        iStream++;
1243                    }
1244                  pszToken = lscp_strtok(NULL, pszSeps, &(pch));                  pszToken = lscp_strtok(NULL, pszSeps, &(pch));
                 if (pszToken == NULL)  
                     break;  
                 pBufferFill[iStream].stream_usage = atol(pszToken);  
                 iStream++;  
1245              }              }
1246              pszToken = lscp_strtok(NULL, pszSeps, &(pch));          }   // Reset the usage, whatever it was before.
1247          }          else while (iStream < pClient->iStreamCount)
1248      }   // Reset the usage, whatever it was before.              pBufferFill[iStream++].stream_usage = 0;
1249      else while (iStream < pClient->iStreamCount)      }
1250          pBufferFill[iStream++].stream_usage = 0;      
1251        // Unlock this section down.
1252        lscp_mutex_unlock(pClient->mutex);
1253    
1254      return pBufferFill;      return pBufferFill;
1255  }  }
# Line 1067  lscp_status_t lscp_set_channel_audio_typ Line 1276  lscp_status_t lscp_set_channel_audio_typ
1276    
1277    
1278  /**  /**
1279     *  Setting audio output device:
1280     *  SET CHANNEL AUDIO_OUTPUT_DEVICE <sampler-channel> <device-id>
1281     *
1282     *  @param pClient          Pointer to client instance structure.
1283     *  @param iSamplerChannel  Sampler channel number.
1284     *  @param iAudioDevice     Audio output device number identifier.
1285     */
1286    lscp_status_t lscp_set_channel_audio_device ( lscp_client_t *pClient, int iSamplerChannel, int iAudioDevice )
1287    {
1288        char szQuery[LSCP_BUFSIZ];
1289    
1290        if (iSamplerChannel < 0 || iAudioDevice < 0)
1291            return LSCP_FAILED;
1292    
1293        sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_DEVICE %d %d\r\n", iSamplerChannel, iAudioDevice);
1294        return lscp_client_query(pClient, szQuery);
1295    }
1296    
1297    
1298    /**
1299   *  Setting audio output channel:   *  Setting audio output channel:
1300   *  SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-output-chan> <audio-input-chan>   *  SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-output-chan> <audio-input-chan>
1301   *   *
# Line 1084  lscp_status_t lscp_set_channel_audio_cha Line 1313  lscp_status_t lscp_set_channel_audio_cha
1313      if (iSamplerChannel < 0 || iAudioOut < 0 || iAudioIn < 0)      if (iSamplerChannel < 0 || iAudioOut < 0 || iAudioIn < 0)
1314          return LSCP_FAILED;          return LSCP_FAILED;
1315    
1316      sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_CHANNELS %d %d %d\r\n", iSamplerChannel, iAudioOut, iAudioIn);      sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_CHANNEL %d %d %d\r\n", iSamplerChannel, iAudioOut, iAudioIn);
1317      return lscp_client_query(pClient, szQuery);      return lscp_client_query(pClient, szQuery);
1318  }  }
1319    
# Line 1112  lscp_status_t lscp_set_channel_midi_type Line 1341  lscp_status_t lscp_set_channel_midi_type
1341    
1342    
1343  /**  /**
1344     *  Setting MIDI input device:
1345     *  SET CHANNEL MIDI_INPUT_DEVICE <sampler-channel> <device-id>
1346     *
1347     *  @param pClient          Pointer to client instance structure.
1348     *  @param iSamplerChannel  Sampler channel number.
1349     *  @param iMidiDevice      MIDI input device number identifier.
1350     */
1351    lscp_status_t lscp_set_channel_midi_device ( lscp_client_t *pClient, int iSamplerChannel, int iMidiDevice )
1352    {
1353        char szQuery[LSCP_BUFSIZ];
1354    
1355        if (iSamplerChannel < 0 || iMidiDevice < 0)
1356            return LSCP_FAILED;
1357    
1358        sprintf(szQuery, "SET CHANNEL MIDI_INPUT_DEVICE %d %d\r\n", iSamplerChannel, iMidiDevice);
1359        return lscp_client_query(pClient, szQuery);
1360    }
1361    
1362    
1363    /**
1364   *  Setting MIDI input port:   *  Setting MIDI input port:
1365   *  SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port>   *  SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port>
1366   *   *
# Line 1139  lscp_status_t lscp_set_channel_midi_port Line 1388  lscp_status_t lscp_set_channel_midi_port
1388   *   *
1389   *  @param pClient          Pointer to client instance structure.   *  @param pClient          Pointer to client instance structure.
1390   *  @param iSamplerChannel  Sampler channel number.   *  @param iSamplerChannel  Sampler channel number.
1391   *  @param iMidiChannel     MIDI channel number to listen (1-16) or   *  @param iMidiChannel     MIDI channel address number to listen (0-15) or
1392   *                          zero (0) to listen on all channels.   *                          LSCP_MIDI_CHANNEL_ALL (16) to listen on all channels.
1393   *   *
1394   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
1395   */   */
# Line 1151  lscp_status_t lscp_set_channel_midi_chan Line 1400  lscp_status_t lscp_set_channel_midi_chan
1400      if (iSamplerChannel < 0 || iMidiChannel < 0 || iMidiChannel > 16)      if (iSamplerChannel < 0 || iMidiChannel < 0 || iMidiChannel > 16)
1401          return LSCP_FAILED;          return LSCP_FAILED;
1402    
1403      if (iMidiChannel > 0)      if (iMidiChannel == LSCP_MIDI_CHANNEL_ALL)
         sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d %d\r\n", iSamplerChannel, iMidiChannel);  
     else  
1404          sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d ALL\r\n", iSamplerChannel);          sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d ALL\r\n", iSamplerChannel);
1405        else
1406            sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d %d\r\n", iSamplerChannel, iMidiChannel);
1407      return lscp_client_query(pClient, szQuery);      return lscp_client_query(pClient, szQuery);
1408  }  }
1409    
# Line 1204  lscp_status_t lscp_reset_channel ( lscp_ Line 1453  lscp_status_t lscp_reset_channel ( lscp_
1453  }  }
1454    
1455    
1456    /**
1457     *  Resetting the sampler:
1458     *  RESET
1459     *
1460     *  @param pClient  Pointer to client instance structure.
1461     *
1462     *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
1463     */
1464    lscp_status_t lscp_reset_sampler ( lscp_client_t *pClient )
1465    {
1466        return lscp_client_query(pClient, "RESET\r\n");
1467    }
1468    
1469    
1470  // end of client.c  // end of client.c
Legend:
Removed from v.107  
changed lines
  Added in v.523
  ViewVC Help
Powered by ViewVC