/[svn]/liblscp/trunk/src/client.c
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revision 132 by capela, Fri Jun 18 14:19:19 2004 UTC revision 869 by capela, Thu Jun 1 08:32:16 2006 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) 2004-2006, 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 14  Line 14 
14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15     Lesser General Public License for more details.     Lesser General Public License for more details.
16    
17     You should have received a copy of the GNU Lesser General Public     You should 14have received a copy of the GNU Lesser General Public
18     License along with this library; if not, write to the Free Software     License along with this library; if not, write to the Free Software
19     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20    
# Line 28  Line 28 
28    
29  // Local prototypes.  // Local prototypes.
30    
31  static void _lscp_client_evt_proc   (void *pvClient);  static void             _lscp_client_evt_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);
35    
36    
37  //-------------------------------------------------------------------------  //-------------------------------------------------------------------------
# Line 37  static void _lscp_client_evt_proc   (voi Line 40  static void _lscp_client_evt_proc   (voi
40  static void _lscp_client_evt_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_evt_proc: Client waiting for events.\n");      fprintf(stderr, "_lscp_client_evt_proc: Client waiting for events.\n");
60  #endif  #endif
61    
62      while (pClient->evt.iState) {      while (pClient->evt.iState) {
63          cAddr = sizeof(struct sockaddr_in);  
64          cchBuffer = recvfrom(pClient->evt.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_evt_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->evt.sock, achBuffer, cchBuffer, 0, (struct sockaddr *) &addr, cAddr) < cchBuffer)                          // Invoke the client event callback...
98                              lscp_socket_perror("_lscp_client_evt_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->evt.iState = 0;  
                 }  
111              }              }
112          } else {          }   // Check if select has in error.
113              lscp_socket_perror("_lscp_client_evt_proc: recvfrom");          else if (iSelect < 0) {
114                lscp_socket_perror("_lscp_client_evt_proc: select");
115              pClient->evt.iState = 0;              pClient->evt.iState = 0;
116          }          }
117    
118            // Finally, always signal the event.
119            lscp_cond_signal(pClient->cond);
120      }      }
121    
122  #ifdef DEBUG  #ifdef DEBUG
# Line 100  static void _lscp_client_evt_proc ( void Line 126  static void _lscp_client_evt_proc ( void
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
154        lscp_socket_getopts("_lscp_client_evt_connect:", sock);
155    #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    
212    //-------------------------------------------------------------------------
213  // Client versioning teller fuunction.  // Client versioning teller fuunction.
214    
215    
# Line 137  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 197  lscp_client_t* lscp_client_create ( cons Line 309  lscp_client_t* lscp_client_create ( cons
309          return NULL;          return NULL;
310      }      }
311    
312        // Initialize the command socket agent struct...
313      lscp_socket_agent_init(&(pClient->cmd), sock, &addr, cAddr);      lscp_socket_agent_init(&(pClient->cmd), sock, &addr, cAddr);
314    
315  #ifdef DEBUG  #ifdef DEBUG
316      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));      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      // Prepare the event datagram service socket...      // Initialize the event service socket struct...
320        lscp_socket_agent_init(&(pClient->evt), INVALID_SOCKET, NULL, 0);
321      sock = socket(AF_INET, SOCK_DGRAM, 0);      // No events subscribed, yet.
322      if (sock == INVALID_SOCKET) {      pClient->events = LSCP_EVENT_NONE;
         lscp_socket_perror("lscp_client_create: evt: socket");  
         lscp_socket_agent_free(&(pClient->cmd));  
         free(pClient);  
         return NULL;  
     }  
   
     if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR)  
         lscp_socket_perror("lscp_client_create: evt: setsockopt(SO_REUSEADDR)");  
   
 #ifdef DEBUG  
     lscp_socket_getopts("lscp_client_create: evt", 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: evt: bind");  
         lscp_socket_agent_free(&(pClient->cmd));  
         closesocket(sock);  
         free(pClient);  
         return NULL;  
     }  
   
     if (getsockname(sock, (struct sockaddr *) &addr, &cAddr) == SOCKET_ERROR) {  
         lscp_socket_perror("lscp_client_create: evt: getsockname");  
         lscp_socket_agent_free(&(pClient->cmd));  
         closesocket(sock);  
         free(pClient);  
         return NULL;  
     }  
   
     lscp_socket_agent_init(&(pClient->evt), sock, &addr, cAddr);  
   
 #ifdef DEBUG  
     fprintf(stderr, "lscp_client_create: evt: pClient=%p: sock=%d addr=%s port=%d.\n", pClient, pClient->evt.sock, inet_ntoa(pClient->evt.addr.sin_addr), ntohs(pClient->evt.addr.sin_port));  
 #endif  
   
     // No session id, yet.  
     pClient->sessid = NULL;  
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;
# Line 257  lscp_client_t* lscp_client_create ( cons Line 327  lscp_client_t* lscp_client_create ( cons
327      pClient->midi_devices = NULL;      pClient->midi_devices = NULL;
328      pClient->engines = NULL;      pClient->engines = NULL;
329      pClient->channels = NULL;      pClient->channels = NULL;
330      lscp_driver_info_init(&(pClient->audio_info));      lscp_driver_info_init(&(pClient->audio_driver_info));
331      lscp_driver_info_init(&(pClient->midi_info));      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_server_info_init(&(pClient->server_info));
341      lscp_engine_info_init(&(pClient->engine_info));      lscp_engine_info_init(&(pClient->engine_info));
342      lscp_channel_info_init(&(pClient->channel_info));      lscp_channel_info_init(&(pClient->channel_info));
343      // Initialize error stuff.      // Initialize error stuff.
# Line 269  lscp_client_t* lscp_client_create ( cons Line 348  lscp_client_t* lscp_client_create ( cons
348      pClient->iStreamCount = 0;      pClient->iStreamCount = 0;
349      // Default timeout value.      // Default timeout value.
350      pClient->iTimeout = LSCP_TIMEOUT_MSECS;      pClient->iTimeout = LSCP_TIMEOUT_MSECS;
351            pClient->iTimeoutCount = 0;
352    
353      // Initialize the transaction mutex.      // Initialize the transaction mutex.
354      lscp_mutex_init(pClient->mutex);      lscp_mutex_init(pClient->mutex);
355        lscp_cond_init(pClient->cond);
     // Now's finally time to startup threads...  
     // Event service thread...  
     if (lscp_socket_agent_start(&(pClient->evt), _lscp_client_evt_proc, pClient, 0) != LSCP_OK) {  
         lscp_socket_agent_free(&(pClient->cmd));  
         lscp_socket_agent_free(&(pClient->evt));  
         lscp_mutex_destroy(pClient->mutex);  
         free(pClient);  
         return NULL;  
     }  
356    
357      // Finally we've some success...      // Finally we've some success...
358      return pClient;      return pClient;
# Line 327  lscp_status_t lscp_client_destroy ( lscp Line 398  lscp_status_t lscp_client_destroy ( lscp
398    
399      // Lock this section up.      // Lock this section up.
400      lscp_mutex_lock(pClient->mutex);      lscp_mutex_lock(pClient->mutex);
401        
    // Free session-id, if any.  
     if (pClient->sessid)  
         free(pClient->sessid);  
     pClient->sessid = NULL;  
402      // Free up all cached members.      // Free up all cached members.
403      lscp_channel_info_reset(&(pClient->channel_info));      lscp_channel_info_free(&(pClient->channel_info));
404      lscp_engine_info_reset(&(pClient->engine_info));      lscp_engine_info_free(&(pClient->engine_info));
405      lscp_driver_info_reset(&(pClient->midi_info));      lscp_server_info_free(&(pClient->server_info));
406      lscp_driver_info_reset(&(pClient->audio_info));      lscp_param_info_free(&(pClient->midi_port_param_info));
407        lscp_param_info_free(&(pClient->audio_channel_param_info));
408        lscp_device_port_info_free(&(pClient->midi_port_info));
409        lscp_device_port_info_free(&(pClient->audio_channel_info));
410        lscp_param_info_free(&(pClient->midi_param_info));
411        lscp_param_info_free(&(pClient->audio_param_info));
412        lscp_device_info_free(&(pClient->midi_device_info));
413        lscp_device_info_free(&(pClient->audio_device_info));
414        lscp_driver_info_free(&(pClient->midi_driver_info));
415        lscp_driver_info_free(&(pClient->audio_driver_info));
416      // Free available engine table.      // Free available engine table.
417      lscp_szsplit_destroy(pClient->audio_drivers);      lscp_szsplit_destroy(pClient->audio_drivers);
418      lscp_szsplit_destroy(pClient->midi_drivers);      lscp_szsplit_destroy(pClient->midi_drivers);
# Line 350  lscp_status_t lscp_client_destroy ( lscp Line 426  lscp_status_t lscp_client_destroy ( lscp
426      pClient->engines = NULL;      pClient->engines = NULL;
427      // Free result error stuff.      // Free result error stuff.
428      lscp_client_set_result(pClient, NULL, 0);      lscp_client_set_result(pClient, NULL, 0);
429      // Frre stream usage stuff.      // Free stream usage stuff.
430      if (pClient->buffer_fill)      if (pClient->buffer_fill)
431          free(pClient->buffer_fill);          free(pClient->buffer_fill);
432      pClient->buffer_fill = NULL;      pClient->buffer_fill = NULL;
# Line 364  lscp_status_t lscp_client_destroy ( lscp Line 440  lscp_status_t lscp_client_destroy ( lscp
440      // Last but not least, free good ol'transaction mutex.      // Last but not least, free good ol'transaction mutex.
441      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
442      lscp_mutex_destroy(pClient->mutex);      lscp_mutex_destroy(pClient->mutex);
443        lscp_cond_destroy(pClient->cond);
444    
445      free(pClient);      free(pClient);
446    
# Line 426  int lscp_client_get_timeout ( lscp_clien Line 503  int lscp_client_get_timeout ( lscp_clien
503  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 )
504  {  {
505      lscp_status_t ret;      lscp_status_t ret;
506        
507      // Lock this section up.      // Lock this section up.
508      lscp_mutex_lock(pClient->mutex);      lscp_mutex_lock(pClient->mutex);
509    
510      // Just make the now guarded call.      // Just make the now guarded call.
511      ret = lscp_client_call(pClient, pszQuery);      ret = lscp_client_call(pClient, pszQuery);
512        
513      // Unlock this section down.      // Unlock this section down.
514      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
515        
516      return ret;      return ret;
517  }  }
518    
# Line 478  int lscp_client_get_errno ( lscp_client_ Line 555  int lscp_client_get_errno ( lscp_client_
555  // Client registration protocol functions.  // Client registration protocol functions.
556    
557  /**  /**
558   *  Register frontend for receiving UDP event messages:   *  Register frontend for receiving event messages:
559   *  SUBSCRIBE NOTIFICATION <udp-port>   *  SUBSCRIBE CHANNEL_COUNT | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL
560     *      | CHANNEL_INFO | MISCELLANEOUS
561   *   *
562   *  @param pClient  Pointer to client instance structure.   *  @param pClient  Pointer to client instance structure.
563     *  @param events   Bit-wise OR'ed event flags to subscribe.
564   *   *
565   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
566   */   */
567  lscp_status_t lscp_client_subscribe ( lscp_client_t *pClient )  lscp_status_t lscp_client_subscribe ( lscp_client_t *pClient, lscp_event_t events )
568  {  {
569      lscp_status_t ret;      lscp_status_t ret = LSCP_FAILED;
     char szQuery[LSCP_BUFSIZ];  
     const char *pszResult;  
     const char *pszSeps = "[]";  
     char *pszToken;  
     char *pch;  
570    
571      if (pClient == NULL || pClient->sessid)      if (pClient == NULL)
572          return LSCP_FAILED;          return LSCP_FAILED;
573    
574      // Lock this section up.      // Lock this section up.
575      lscp_mutex_lock(pClient->mutex);      lscp_mutex_lock(pClient->mutex);
576        
577      sprintf(szQuery, "SUBSCRIBE NOTIFICATION %d\r\n", ntohs(pClient->evt.addr.sin_port));      // If applicable, start the alternate connection...
578      ret = lscp_client_call(pClient, szQuery);      if (pClient->events == LSCP_EVENT_NONE)
579      if (ret == LSCP_OK) {          ret = _lscp_client_evt_connect(pClient);
580          pszResult = lscp_client_get_result(pClient);  
581  #ifdef DEBUG      // Send the subscription commands.
582          fprintf(stderr, "lscp_client_subscribe: %s\n", pszResult);      if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_COUNT))
583  #endif          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNEL_COUNT);
584          // Check for the session-id on "OK[sessid]" response.      if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT))
585          pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch));          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_VOICE_COUNT);
586          if (pszToken && strcasecmp(pszToken, "OK") == 0) {      if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT))
587              pszToken = lscp_strtok(NULL, pszSeps, &(pch));          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_STREAM_COUNT);
588              if (pszToken)      if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL))
589                  pClient->sessid = strdup(pszToken);          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_BUFFER_FILL);
590          }      if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO))
591      }          ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNEL_INFO);
592        if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS))
593            ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_MISCELLANEOUS);
594    
595      // Unlock this section down.      // Unlock this section down.
596      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
# Line 524  lscp_status_t lscp_client_subscribe ( ls Line 600  lscp_status_t lscp_client_subscribe ( ls
600    
601    
602  /**  /**
603   *  Deregister frontend for not receiving UDP event messages anymore:   *  Deregister frontend from receiving UDP event messages anymore:
604   *  UNSUBSCRIBE NOTIFICATION <session-id>   *  SUBSCRIBE CHANNEL_COUNT | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL
605     *      | CHANNEL_INFO | MISCELLANEOUS
606   *   *
607   *  @param pClient  Pointer to client instance structure.   *  @param pClient  Pointer to client instance structure.
608     *  @param events   Bit-wise OR'ed event flags to unsubscribe.
609   *   *
610   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
611   */   */
612  lscp_status_t lscp_client_unsubscribe ( lscp_client_t *pClient )  lscp_status_t lscp_client_unsubscribe ( lscp_client_t *pClient, lscp_event_t events )
613  {  {
614      lscp_status_t ret;      lscp_status_t ret = LSCP_OK;
     char szQuery[LSCP_BUFSIZ];  
615    
616      if (pClient == NULL)      if (pClient == NULL)
617          return LSCP_FAILED;          return LSCP_FAILED;
     if (pClient->sessid == NULL)  
         return LSCP_FAILED;  
618    
619      // Lock this section up.      // Lock this section up.
620      lscp_mutex_lock(pClient->mutex);      lscp_mutex_lock(pClient->mutex);
621    
622      sprintf(szQuery, "UNSUBSCRIBE NOTIFICATION %s\n\n", pClient->sessid);      // Send the unsubscription commands.
623      ret = lscp_client_call(pClient, szQuery);      if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_COUNT))
624      if (ret == LSCP_OK) {          ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNEL_COUNT);
625  #ifdef DEBUG      if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT))
626          fprintf(stderr, "lscp_client_unsubscribe: %s\n", lscp_client_get_result(pClient));          ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_VOICE_COUNT);
627  #endif      if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT))
628          // Bail out session-id string.          ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_STREAM_COUNT);
629          free(pClient->sessid);      if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL))
630          pClient->sessid = NULL;          ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_BUFFER_FILL);
631      }      if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO))
632            ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNEL_INFO);
633        if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS))
634            ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_MISCELLANEOUS);
635    
636        // If necessary, close the alternate connection...
637        if (pClient->events == LSCP_EVENT_NONE)
638            lscp_socket_agent_free(&(pClient->evt));
639    
640      // Unlock this section down.      // Unlock this section down.
641      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
# Line 562  lscp_status_t lscp_client_unsubscribe ( Line 644  lscp_status_t lscp_client_unsubscribe (
644  }  }
645    
646    
647    /**
648     *  Getting current subscribed events.
649     *
650     *  @param pClient  Pointer to client instance structure.
651     *
652     *  @returns The current subscrived bit-wise OR'ed event flags.
653     */
654    lscp_event_t lscp_client_get_events ( lscp_client_t *pClient )
655    {
656        if (pClient == NULL)
657            return LSCP_EVENT_NONE;
658    
659        return pClient->events;
660    }
661    
662    
663  //-------------------------------------------------------------------------  //-------------------------------------------------------------------------
664  // Client command protocol functions.  // Client command protocol functions.
665    
# Line 583  lscp_status_t lscp_load_instrument ( lsc Line 681  lscp_status_t lscp_load_instrument ( lsc
681      if (pszFileName == NULL || iSamplerChannel < 0)      if (pszFileName == NULL || iSamplerChannel < 0)
682          return LSCP_FAILED;          return LSCP_FAILED;
683    
684      sprintf(szQuery, "LOAD INSTRUMENT %s %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel);      sprintf(szQuery, "LOAD INSTRUMENT '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel);
685        return lscp_client_query(pClient, szQuery);
686    }
687    
688    
689    /**
690     *  Loading an instrument in the background (non modal):
691     *  LOAD INSTRUMENT NON_MODAL <filename> <instr-index> <sampler-channel>
692     *
693     *  @param pClient          Pointer to client instance structure.
694     *  @param pszFileName      Instrument file name.
695     *  @param iInstrIndex      Instrument index number.
696     *  @param iSamplerChannel  Sampler Channel.
697     *
698     *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
699     */
700    lscp_status_t lscp_load_instrument_non_modal ( lscp_client_t *pClient, const char *pszFileName, int iInstrIndex, int iSamplerChannel )
701    {
702        char szQuery[LSCP_BUFSIZ];
703    
704        if (pszFileName == NULL || iSamplerChannel < 0)
705            return LSCP_FAILED;
706    
707        sprintf(szQuery, "LOAD INSTRUMENT NON_MODAL '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel);
708      return lscp_client_query(pClient, szQuery);      return lscp_client_query(pClient, szQuery);
709  }  }
710    
# Line 651  int *lscp_list_channels ( lscp_client_t Line 772  int *lscp_list_channels ( lscp_client_t
772    
773      if (pClient == NULL)      if (pClient == NULL)
774          return NULL;          return NULL;
775            
776      // Lock this section up.      // Lock this section up.
777      lscp_mutex_lock(pClient->mutex);      lscp_mutex_lock(pClient->mutex);
778    
# Line 688  int lscp_add_channel ( lscp_client_t *pC Line 809  int lscp_add_channel ( lscp_client_t *pC
809    
810      if (lscp_client_call(pClient, "ADD CHANNEL\r\n") == LSCP_OK)      if (lscp_client_call(pClient, "ADD CHANNEL\r\n") == LSCP_OK)
811          iSamplerChannel = atoi(lscp_client_get_result(pClient));          iSamplerChannel = atoi(lscp_client_get_result(pClient));
812            
813      // Unlock this section down.      // Unlock this section down.
814      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
815    
# Line 718  lscp_status_t lscp_remove_channel ( lscp Line 839  lscp_status_t lscp_remove_channel ( lscp
839    
840    
841  /**  /**
842   *  Getting all available engines:   *  Getting all available engines count:
843   *  GET AVAILABLE_ENGINES   *  GET AVAILABLE_ENGINES
844   *   *
845   *  @param pClient  Pointer to client instance structure.   *  @param pClient  Pointer to client instance structure.
846   *   *
847     *  @returns The current total number of sampler engines on success,
848     *  -1 otherwise.
849     */
850    int lscp_get_available_engines ( lscp_client_t *pClient )
851    {
852        int iAvailableEngines = -1;
853    
854        // Lock this section up.
855        lscp_mutex_lock(pClient->mutex);
856    
857        if (lscp_client_call(pClient, "GET AVAILABLE_ENGINES\r\n") == LSCP_OK)
858            iAvailableEngines = atoi(lscp_client_get_result(pClient));
859    
860        // Unlock this section down.
861        lscp_mutex_unlock(pClient->mutex);
862    
863        return iAvailableEngines;
864    }
865    
866    
867    /**
868     *  Getting all available engines:
869     *  LIST AVAILABLE_ENGINES
870     *
871     *  @param pClient  Pointer to client instance structure.
872     *
873   *  @returns A NULL terminated array of engine name strings,   *  @returns A NULL terminated array of engine name strings,
874   *  or NULL in case of failure.   *  or NULL in case of failure.
875   */   */
876  const char **lscp_get_available_engines ( lscp_client_t *pClient )  const char **lscp_list_available_engines ( lscp_client_t *pClient )
877  {  {
878      const char *pszSeps = ",";      const char *pszSeps = ",";
879    
# Line 738  const char **lscp_get_available_engines Line 885  const char **lscp_get_available_engines
885          pClient->engines = NULL;          pClient->engines = NULL;
886      }      }
887    
888      if (lscp_client_call(pClient, "GET AVAILABLE_ENGINES\r\n") == LSCP_OK)      if (lscp_client_call(pClient, "LIST AVAILABLE_ENGINES\r\n") == LSCP_OK)
889          pClient->engines = lscp_szsplit_create(lscp_client_get_result(pClient), pszSeps);          pClient->engines = lscp_szsplit_create(lscp_client_get_result(pClient), pszSeps);
890    
891      // Unlock this section down.      // Unlock this section down.
# Line 785  lscp_engine_info_t *lscp_get_engine_info Line 932  lscp_engine_info_t *lscp_get_engine_info
932              if (strcasecmp(pszToken, "DESCRIPTION") == 0) {              if (strcasecmp(pszToken, "DESCRIPTION") == 0) {
933                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
934                  if (pszToken)                  if (pszToken)
935                      pEngineInfo->description = lscp_unquote(&pszToken, 1);                      lscp_unquote_dup(&(pEngineInfo->description), &pszToken);
936              }              }
937              else if (strcasecmp(pszToken, "VERSION") == 0) {              else if (strcasecmp(pszToken, "VERSION") == 0) {
938                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
939                  if (pszToken)                  if (pszToken)
940                      pEngineInfo->version = lscp_unquote(&pszToken, 1);                      lscp_unquote_dup(&(pEngineInfo->version), &pszToken);
941              }              }
942              pszToken = lscp_strtok(NULL, pszSeps, &(pch));              pszToken = lscp_strtok(NULL, pszSeps, &(pch));
943          }          }
944      }      }
945      else pEngineInfo = NULL;      else pEngineInfo = NULL;
946        
947      // Unlock this section down.      // Unlock this section down.
948      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
949    
# Line 829  lscp_channel_info_t *lscp_get_channel_in Line 976  lscp_channel_info_t *lscp_get_channel_in
976    
977      // Lock this section up.      // Lock this section up.
978      lscp_mutex_lock(pClient->mutex);      lscp_mutex_lock(pClient->mutex);
979        
980      pChannelInfo = &(pClient->channel_info);      pChannelInfo = &(pClient->channel_info);
981      lscp_channel_info_reset(pChannelInfo);      lscp_channel_info_reset(pChannelInfo);
982    
# Line 841  lscp_channel_info_t *lscp_get_channel_in Line 988  lscp_channel_info_t *lscp_get_channel_in
988              if (strcasecmp(pszToken, "ENGINE_NAME") == 0) {              if (strcasecmp(pszToken, "ENGINE_NAME") == 0) {
989                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
990                  if (pszToken)                  if (pszToken)
991                      pChannelInfo->engine_name = lscp_unquote(&pszToken, 1);                      lscp_unquote_dup(&(pChannelInfo->engine_name), &pszToken);
992              }              }
993              else if (strcasecmp(pszToken, "AUDIO_OUTPUT_DEVICE") == 0) {              else if (strcasecmp(pszToken, "AUDIO_OUTPUT_DEVICE") == 0) {
994                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
# Line 855  lscp_channel_info_t *lscp_get_channel_in Line 1002  lscp_channel_info_t *lscp_get_channel_in
1002              }              }
1003              else if (strcasecmp(pszToken, "AUDIO_OUTPUT_ROUTING") == 0) {              else if (strcasecmp(pszToken, "AUDIO_OUTPUT_ROUTING") == 0) {
1004                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1005                  if (pszToken)                  if (pszToken) {
1006                        if (pChannelInfo->audio_routing)
1007                            lscp_szsplit_destroy(pChannelInfo->audio_routing);
1008                      pChannelInfo->audio_routing = lscp_szsplit_create(pszToken, ",");                      pChannelInfo->audio_routing = lscp_szsplit_create(pszToken, ",");
1009                    }
1010              }              }
1011              else if (strcasecmp(pszToken, "INSTRUMENT_FILE") == 0) {              else if (strcasecmp(pszToken, "INSTRUMENT_FILE") == 0) {
1012                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1013                  if (pszToken)                  if (pszToken)
1014                      pChannelInfo->instrument_file = lscp_unquote(&pszToken, 1);                      lscp_unquote_dup(&(pChannelInfo->instrument_file), &pszToken);
1015              }              }
1016              else if (strcasecmp(pszToken, "INSTRUMENT_NR") == 0) {              else if (strcasecmp(pszToken, "INSTRUMENT_NR") == 0) {
1017                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1018                  if (pszToken)                  if (pszToken)
1019                      pChannelInfo->instrument_nr = atoi(lscp_ltrim(pszToken));                      pChannelInfo->instrument_nr = atoi(lscp_ltrim(pszToken));
1020              }              }
1021                else if (strcasecmp(pszToken, "INSTRUMENT_NAME") == 0) {
1022                    pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1023                    if (pszToken)
1024                        lscp_unquote_dup(&(pChannelInfo->instrument_name), &pszToken);
1025                }
1026              else if (strcasecmp(pszToken, "INSTRUMENT_STATUS") == 0) {              else if (strcasecmp(pszToken, "INSTRUMENT_STATUS") == 0) {
1027                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1028                  if (pszToken)                  if (pszToken)
# Line 885  lscp_channel_info_t *lscp_get_channel_in Line 1040  lscp_channel_info_t *lscp_get_channel_in
1040              }              }
1041              else if (strcasecmp(pszToken, "MIDI_INPUT_CHANNEL") == 0) {              else if (strcasecmp(pszToken, "MIDI_INPUT_CHANNEL") == 0) {
1042                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1043                  if (pszToken)                  if (pszToken) {
1044                      pChannelInfo->midi_channel = atoi(lscp_ltrim(pszToken));                      pszToken = lscp_ltrim(pszToken);
1045                        if (strcasecmp(pszToken, "ALL") == 0)
1046                            pChannelInfo->midi_channel = LSCP_MIDI_CHANNEL_ALL;
1047                        else
1048                            pChannelInfo->midi_channel = atoi(pszToken);
1049                    }
1050              }              }
1051              else if (strcasecmp(pszToken, "VOLUME") == 0) {              else if (strcasecmp(pszToken, "VOLUME") == 0) {
1052                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));                  pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1053                  if (pszToken)                  if (pszToken)
1054                      pChannelInfo->volume = (float) atof(lscp_ltrim(pszToken));                      pChannelInfo->volume = (float) atof(lscp_ltrim(pszToken));
1055              }              }
1056                else if (strcasecmp(pszToken, "MUTE") == 0) {
1057                    pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1058                    if (pszToken)
1059                        pChannelInfo->mute = (strcasecmp(lscp_unquote(&pszToken, 0), "TRUE") == 0);
1060                }
1061                else if (strcasecmp(pszToken, "SOLO") == 0) {
1062                    pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1063                    if (pszToken)
1064                        pChannelInfo->solo = (strcasecmp(lscp_unquote(&pszToken, 0), "TRUE") == 0);
1065                }
1066              pszToken = lscp_strtok(NULL, pszSeps, &(pch));              pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1067          }          }
1068      }      }
1069      else pChannelInfo = NULL;      else pChannelInfo = NULL;
1070        
1071      // Unlock this section up.      // Unlock this section up.
1072      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
1073    
# Line 940  int lscp_get_channel_voice_count ( lscp_ Line 1110  int lscp_get_channel_voice_count ( lscp_
1110   *  Current number of active disk streams:   *  Current number of active disk streams:
1111   *  GET CHANNEL STREAM_COUNT <sampler-channel>   *  GET CHANNEL STREAM_COUNT <sampler-channel>
1112   *   *
1113     *  @param pClient          Pointer to client instance structure.
1114     *  @param iSamplerChannel  Sampler channel number.
1115     *
1116   *  @returns The number of active disk streams on success, -1 otherwise.   *  @returns The number of active disk streams on success, -1 otherwise.
1117   */   */
1118  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 965  int lscp_get_channel_stream_count ( lscp Line 1138  int lscp_get_channel_stream_count ( lscp
1138    
1139    
1140  /**  /**
1141     *  Current least usage of active disk streams.
1142     *
1143     *  @param pClient          Pointer to client instance structure.
1144     *  @param iSamplerChannel  Sampler channel number.
1145     *
1146     *  @returns The usage percentage of the least filled active disk stream
1147     *  on success, -1 otherwise.
1148     */
1149    int lscp_get_channel_stream_usage ( lscp_client_t *pClient, int iSamplerChannel )
1150    {
1151        char szQuery[LSCP_BUFSIZ];
1152        int  iStreamUsage = -1;
1153        const char *pszResult;
1154        const char *pszSeps = "[]%,";
1155        char *pszToken;
1156        char *pch;
1157        int   iStream;
1158        int   iPercent;
1159    
1160        if (iSamplerChannel < 0)
1161            return iStreamUsage;
1162    
1163        // Lock this section up.
1164        lscp_mutex_lock(pClient->mutex);
1165    
1166        iStream = 0;
1167        sprintf(szQuery, "GET CHANNEL BUFFER_FILL PERCENTAGE %d\r\n", iSamplerChannel);
1168        if (lscp_client_call(pClient, szQuery) == LSCP_OK) {
1169            pszResult = lscp_client_get_result(pClient);
1170            pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch));
1171            while (pszToken) {
1172                if (*pszToken) {
1173                    // Skip stream id.
1174                    pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1175                    if (pszToken == NULL)
1176                        break;
1177                    // Get least buffer fill percentage.
1178                    iPercent = atol(pszToken);
1179                    if (iStreamUsage > iPercent || iStream == 0)
1180                        iStreamUsage = iPercent;
1181                    iStream++;
1182                }
1183                pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1184            }
1185        }
1186    
1187        // Unlock this section down.
1188        lscp_mutex_unlock(pClient->mutex);
1189    
1190        return iStreamUsage;
1191    }
1192    
1193    
1194    /**
1195   *  Current fill state of disk stream buffers:   *  Current fill state of disk stream buffers:
1196   *  GET CHANNEL BUFFER_FILL {BYTES|PERCENTAGE} <sampler-channel>   *  GET CHANNEL BUFFER_FILL {BYTES|PERCENTAGE} <sampler-channel>
1197   *   *
# Line 1033  lscp_buffer_fill_t *lscp_get_channel_buf Line 1260  lscp_buffer_fill_t *lscp_get_channel_buf
1260          else while (iStream < pClient->iStreamCount)          else while (iStream < pClient->iStreamCount)
1261              pBufferFill[iStream++].stream_usage = 0;              pBufferFill[iStream++].stream_usage = 0;
1262      }      }
1263        
1264      // Unlock this section down.      // Unlock this section down.
1265      lscp_mutex_unlock(pClient->mutex);      lscp_mutex_unlock(pClient->mutex);
1266    
# Line 1062  lscp_status_t lscp_set_channel_audio_typ Line 1289  lscp_status_t lscp_set_channel_audio_typ
1289    
1290    
1291  /**  /**
1292     *  Setting audio output device:
1293     *  SET CHANNEL AUDIO_OUTPUT_DEVICE <sampler-channel> <device-id>
1294     *
1295     *  @param pClient          Pointer to client instance structure.
1296     *  @param iSamplerChannel  Sampler channel number.
1297     *  @param iAudioDevice     Audio output device number identifier.
1298     */
1299    lscp_status_t lscp_set_channel_audio_device ( lscp_client_t *pClient, int iSamplerChannel, int iAudioDevice )
1300    {
1301        char szQuery[LSCP_BUFSIZ];
1302    
1303        if (iSamplerChannel < 0 || iAudioDevice < 0)
1304            return LSCP_FAILED;
1305    
1306        sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_DEVICE %d %d\r\n", iSamplerChannel, iAudioDevice);
1307        return lscp_client_query(pClient, szQuery);
1308    }
1309    
1310    
1311    /**
1312   *  Setting audio output channel:   *  Setting audio output channel:
1313   *  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>
1314   *   *
# Line 1079  lscp_status_t lscp_set_channel_audio_cha Line 1326  lscp_status_t lscp_set_channel_audio_cha
1326      if (iSamplerChannel < 0 || iAudioOut < 0 || iAudioIn < 0)      if (iSamplerChannel < 0 || iAudioOut < 0 || iAudioIn < 0)
1327          return LSCP_FAILED;          return LSCP_FAILED;
1328    
1329      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);
1330      return lscp_client_query(pClient, szQuery);      return lscp_client_query(pClient, szQuery);
1331  }  }
1332    
# Line 1107  lscp_status_t lscp_set_channel_midi_type Line 1354  lscp_status_t lscp_set_channel_midi_type
1354    
1355    
1356  /**  /**
1357     *  Setting MIDI input device:
1358     *  SET CHANNEL MIDI_INPUT_DEVICE <sampler-channel> <device-id>
1359     *
1360     *  @param pClient          Pointer to client instance structure.
1361     *  @param iSamplerChannel  Sampler channel number.
1362     *  @param iMidiDevice      MIDI input device number identifier.
1363     */
1364    lscp_status_t lscp_set_channel_midi_device ( lscp_client_t *pClient, int iSamplerChannel, int iMidiDevice )
1365    {
1366        char szQuery[LSCP_BUFSIZ];
1367    
1368        if (iSamplerChannel < 0 || iMidiDevice < 0)
1369            return LSCP_FAILED;
1370    
1371        sprintf(szQuery, "SET CHANNEL MIDI_INPUT_DEVICE %d %d\r\n", iSamplerChannel, iMidiDevice);
1372        return lscp_client_query(pClient, szQuery);
1373    }
1374    
1375    
1376    /**
1377   *  Setting MIDI input port:   *  Setting MIDI input port:
1378   *  SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port>   *  SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port>
1379   *   *
# Line 1134  lscp_status_t lscp_set_channel_midi_port Line 1401  lscp_status_t lscp_set_channel_midi_port
1401   *   *
1402   *  @param pClient          Pointer to client instance structure.   *  @param pClient          Pointer to client instance structure.
1403   *  @param iSamplerChannel  Sampler channel number.   *  @param iSamplerChannel  Sampler channel number.
1404   *  @param iMidiChannel     MIDI channel number to listen (1-16) or   *  @param iMidiChannel     MIDI channel address number to listen (0-15) or
1405   *                          zero (0) to listen on all channels.   *                          LSCP_MIDI_CHANNEL_ALL (16) to listen on all channels.
1406   *   *
1407   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.   *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
1408   */   */
# Line 1146  lscp_status_t lscp_set_channel_midi_chan Line 1413  lscp_status_t lscp_set_channel_midi_chan
1413      if (iSamplerChannel < 0 || iMidiChannel < 0 || iMidiChannel > 16)      if (iSamplerChannel < 0 || iMidiChannel < 0 || iMidiChannel > 16)
1414          return LSCP_FAILED;          return LSCP_FAILED;
1415    
1416      if (iMidiChannel > 0)      if (iMidiChannel == LSCP_MIDI_CHANNEL_ALL)
         sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d %d\r\n", iSamplerChannel, iMidiChannel);  
     else  
1417          sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d ALL\r\n", iSamplerChannel);          sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d ALL\r\n", iSamplerChannel);
1418        else
1419            sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d %d\r\n", iSamplerChannel, iMidiChannel);
1420      return lscp_client_query(pClient, szQuery);      return lscp_client_query(pClient, szQuery);
1421  }  }
1422    
# Line 1179  lscp_status_t lscp_set_channel_volume ( Line 1446  lscp_status_t lscp_set_channel_volume (
1446    
1447    
1448  /**  /**
1449     *  Muting a sampler channel:
1450     *  SET CHANNEL MUTE <sampler-channel> <mute>
1451     *
1452     *  @param pClient          Pointer to client instance structure.
1453     *  @param iSamplerChannel  Sampler channel number.
1454     *  @param iMute            Sampler channel mute state as a boolean value,
1455     *                          either 1 (one) to mute the channel or 0 (zero)
1456     *                          to unmute the channel.
1457     *
1458     *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
1459     */
1460    lscp_status_t lscp_set_channel_mute ( lscp_client_t *pClient, int iSamplerChannel, int iMute )
1461    {
1462        char szQuery[LSCP_BUFSIZ];
1463    
1464        if (iSamplerChannel < 0 || iMute < 0 || iMute > 1)
1465            return LSCP_FAILED;
1466    
1467        sprintf(szQuery, "SET CHANNEL MUTE %d %d\r\n", iSamplerChannel, iMute);
1468        return lscp_client_query(pClient, szQuery);
1469    }
1470    
1471    
1472    /**
1473     *  Soloing a sampler channel:
1474     *  SET CHANNEL SOLO <sampler-channel> <solo>
1475     *
1476     *  @param pClient          Pointer to client instance structure.
1477     *  @param iSamplerChannel  Sampler channel number.
1478     *  @param iSolo            Sampler channel solo state as a boolean value,
1479     *                          either 1 (one) to solo the channel or 0 (zero)
1480     *                          to unsolo the channel.
1481     *
1482     *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
1483     */
1484    lscp_status_t lscp_set_channel_solo ( lscp_client_t *pClient, int iSamplerChannel, int iSolo )
1485    {
1486        char szQuery[LSCP_BUFSIZ];
1487    
1488        if (iSamplerChannel < 0 || iSolo < 0 || iSolo > 1)
1489            return LSCP_FAILED;
1490    
1491        sprintf(szQuery, "SET CHANNEL SOLO %d %d\r\n", iSamplerChannel, iSolo);
1492        return lscp_client_query(pClient, szQuery);
1493    }
1494    
1495    
1496    /**
1497   *  Resetting a sampler channel:   *  Resetting a sampler channel:
1498   *  RESET CHANNEL <sampler-channel>   *  RESET CHANNEL <sampler-channel>
1499   *   *
# Line 1199  lscp_status_t lscp_reset_channel ( lscp_ Line 1514  lscp_status_t lscp_reset_channel ( lscp_
1514  }  }
1515    
1516    
1517    /**
1518     *  Resetting the sampler:
1519     *  RESET
1520     *
1521     *  @param pClient  Pointer to client instance structure.
1522     *
1523     *  @returns LSCP_OK on success, LSCP_FAILED otherwise.
1524     */
1525    lscp_status_t lscp_reset_sampler ( lscp_client_t *pClient )
1526    {
1527        return lscp_client_query(pClient, "RESET\r\n");
1528    }
1529    
1530    
1531    /**
1532     *  Getting information about the server.
1533     *  GET SERVER INFO
1534     *
1535     *  @param pClient  Pointer to client instance structure.
1536     *
1537     *  @returns A pointer to a @ref lscp_server_info_t structure, with all the
1538     *  information of the current connected server, or NULL in case of failure.
1539     */
1540    lscp_server_info_t *lscp_get_server_info ( lscp_client_t *pClient )
1541    {
1542        lscp_server_info_t *pServerInfo;
1543        const char *pszResult;
1544        const char *pszSeps = ":";
1545        const char *pszCrlf = "\r\n";
1546        char *pszToken;
1547        char *pch;
1548    
1549        // Lock this section up.
1550        lscp_mutex_lock(pClient->mutex);
1551    
1552        pServerInfo = &(pClient->server_info);
1553        lscp_server_info_reset(pServerInfo);
1554    
1555        if (lscp_client_call(pClient, "GET SERVER INFO\r\n") == LSCP_OK) {
1556            pszResult = lscp_client_get_result(pClient);
1557            pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch));
1558            while (pszToken) {
1559                if (strcasecmp(pszToken, "DESCRIPTION") == 0) {
1560                    pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1561                    if (pszToken)
1562                        lscp_unquote_dup(&(pServerInfo->description), &pszToken);
1563                }
1564                else if (strcasecmp(pszToken, "VERSION") == 0) {
1565                    pszToken = lscp_strtok(NULL, pszCrlf, &(pch));
1566                    if (pszToken)
1567                        lscp_unquote_dup(&(pServerInfo->version), &pszToken);
1568                }
1569                pszToken = lscp_strtok(NULL, pszSeps, &(pch));
1570            }
1571        }
1572        else pServerInfo = NULL;
1573    
1574        // Unlock this section down.
1575        lscp_mutex_unlock(pClient->mutex);
1576    
1577        return pServerInfo;
1578    }
1579    
1580    
1581  // end of client.c  // end of client.c
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