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// client.c |
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// |
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/**************************************************************************** |
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liblscp - LinuxSampler Control Protocol API |
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Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved. |
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|
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This library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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|
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This library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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|
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You should have received a copy of the GNU Lesser General Public |
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License along with this library; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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|
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*****************************************************************************/ |
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|
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#include "common.h" |
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|
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// Default timeout value (in milliseconds). |
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#define LSCP_TIMEOUT_MSECS 500 |
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|
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|
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// Local prototypes. |
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|
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static void _lscp_client_evt_proc (void *pvClient); |
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|
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static lscp_status_t _lscp_client_evt_connect (lscp_client_t *pClient); |
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static lscp_status_t _lscp_client_evt_request (lscp_client_t *pClient, int iSubscribe, lscp_event_t event); |
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|
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|
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//------------------------------------------------------------------------- |
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// Event service (datagram oriented). |
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|
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static void _lscp_client_evt_proc ( void *pvClient ) |
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{ |
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lscp_client_t *pClient = (lscp_client_t *) pvClient; |
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char achBuffer[LSCP_BUFSIZ]; |
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int cchBuffer; |
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const char *pszSeps = ":\r\n"; |
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char *pszToken; |
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char *pch; |
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int cchToken; |
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lscp_event_t event; |
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|
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#ifdef DEBUG |
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fprintf(stderr, "_lscp_client_evt_proc: Client waiting for events.\n"); |
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#endif |
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|
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while (pClient->evt.iState) { |
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// Wait for event... |
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cchBuffer = recv(pClient->evt.sock, achBuffer, sizeof(achBuffer), 0); |
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if (cchBuffer > 0) { |
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// Make sure received buffer it's null terminated. |
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achBuffer[cchBuffer] = (char) 0; |
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// Parse for the notification event message... |
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pszToken = lscp_strtok(achBuffer, pszSeps, &(pch)); // Have "NOTIFY". |
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if (strcasecmp(pszToken, "NOTIFY") == 0) { |
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pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
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event = lscp_event_from_text(pszToken); |
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// And pick the rest of data... |
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pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
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cchToken = (pszToken == NULL ? 0 : strlen(pszToken)); |
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// Double-check if we're really up to it... |
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if (pClient->events & event) { |
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// Invoke the client event callback... |
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if ((*pClient->pfnCallback)( |
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pClient, |
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event, |
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pszToken, |
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cchToken, |
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pClient->pvData) != LSCP_OK) { |
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pClient->evt.iState = 0; |
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} |
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} |
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} |
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} else { |
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lscp_socket_perror("_lscp_client_evt_proc: recv"); |
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pClient->evt.iState = 0; |
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} |
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} |
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|
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#ifdef DEBUG |
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fprintf(stderr, "_lscp_client_evt_proc: Client closing.\n"); |
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#endif |
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} |
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|
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|
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//------------------------------------------------------------------------- |
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// Event subscription helpers. |
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|
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// Open the event service socket connection. |
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static lscp_status_t _lscp_client_evt_connect ( lscp_client_t *pClient ) |
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{ |
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lscp_socket_t sock; |
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struct sockaddr_in addr; |
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int cAddr; |
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#if defined(WIN32) |
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int iSockOpt = (-1); |
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#endif |
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|
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// Prepare the event connection socket... |
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sock = socket(AF_INET, SOCK_STREAM, 0); |
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if (sock == INVALID_SOCKET) { |
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lscp_socket_perror("_lscp_client_evt_connect: socket"); |
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return LSCP_FAILED; |
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} |
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|
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#if defined(WIN32) |
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if (setsockopt(sock, SOL_SOCKET, SO_DONTLINGER, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR) |
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lscp_socket_perror("lscp_client_evt_connect: setsockopt(SO_DONTLINGER)"); |
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#endif |
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|
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#ifdef DEBUG |
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lscp_socket_getopts("_lscp_client_evt_connect:", sock); |
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#endif |
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|
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// Use same address of the command connection. |
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cAddr = sizeof(struct sockaddr_in); |
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memmove((char *) &addr, &(pClient->cmd.addr), cAddr); |
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|
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// Start the connection... |
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if (connect(sock, (struct sockaddr *) &addr, cAddr) == SOCKET_ERROR) { |
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lscp_socket_perror("_lscp_client_evt_connect: connect"); |
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closesocket(sock); |
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return LSCP_FAILED; |
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} |
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|
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// Set our socket agent struct... |
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lscp_socket_agent_init(&(pClient->evt), sock, &addr, cAddr); |
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|
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// And finally the service thread... |
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return lscp_socket_agent_start(&(pClient->evt), _lscp_client_evt_proc, pClient, 0); |
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} |
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|
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|
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// Subscribe to a single event. |
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static lscp_status_t _lscp_client_evt_request ( lscp_client_t *pClient, int iSubscribe, lscp_event_t event ) |
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{ |
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const char *pszEvent; |
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char szQuery[LSCP_BUFSIZ]; |
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int cchQuery; |
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|
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if (pClient == NULL) |
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return LSCP_FAILED; |
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|
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// Which (single) event? |
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pszEvent = lscp_event_to_text(event); |
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if (pszEvent == NULL) |
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return LSCP_FAILED; |
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|
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// Build the query string... |
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cchQuery = sprintf(szQuery, "%sSUBSCRIBE %s\n\n", (iSubscribe == 0 ? "UN" : ""), pszEvent); |
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// Just send data, forget result... |
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if (send(pClient->evt.sock, szQuery, cchQuery, 0) < cchQuery) { |
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lscp_socket_perror("_lscp_client_evt_request: send"); |
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return LSCP_FAILED; |
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} |
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|
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// Update as naively as we can... |
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if (iSubscribe) |
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pClient->events |= event; |
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else |
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pClient->events &= ~event; |
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|
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return LSCP_OK; |
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} |
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|
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|
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//------------------------------------------------------------------------- |
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// Client versioning teller fuunction. |
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|
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|
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/** Retrieve the current client library version string. */ |
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const char* lscp_client_package (void) { return LSCP_PACKAGE; } |
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|
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/** Retrieve the current client library version string. */ |
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const char* lscp_client_version (void) { return LSCP_VERSION; } |
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|
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/** Retrieve the current client library build timestamp string. */ |
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const char* lscp_client_build (void) { return __DATE__ " " __TIME__; } |
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|
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|
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//------------------------------------------------------------------------- |
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// Client socket functions. |
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|
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/** |
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* Create a client instance, estabilishing a connection to a server hostname, |
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* which must be listening on the given port. A client callback function is |
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* also supplied for server notification event handling. |
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* |
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* @param pszHost Hostname of the linuxsampler listening server. |
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* @param iPort Port number of the linuxsampler listening server. |
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* @param pfnCallback Callback function to receive event notifications. |
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* @param pvData User context opaque data, that will be passed |
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* to the callback function. |
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* |
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* @returns The new client instance pointer if successfull, which shall be |
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* used on all subsequent client calls, NULL otherwise. |
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*/ |
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lscp_client_t* lscp_client_create ( const char *pszHost, int iPort, lscp_client_proc_t pfnCallback, void *pvData ) |
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{ |
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lscp_client_t *pClient; |
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struct hostent *pHost; |
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lscp_socket_t sock; |
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struct sockaddr_in addr; |
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int cAddr; |
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#if defined(WIN32) |
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int iSockOpt = (-1); |
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#endif |
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|
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if (pfnCallback == NULL) { |
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fprintf(stderr, "lscp_client_create: Invalid client callback function.\n"); |
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return NULL; |
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} |
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|
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pHost = gethostbyname(pszHost); |
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if (pHost == NULL) { |
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lscp_socket_herror("lscp_client_create: gethostbyname"); |
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return NULL; |
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} |
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|
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// Allocate client descriptor... |
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|
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pClient = (lscp_client_t *) malloc(sizeof(lscp_client_t)); |
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if (pClient == NULL) { |
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fprintf(stderr, "lscp_client_create: Out of memory.\n"); |
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return NULL; |
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} |
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memset(pClient, 0, sizeof(lscp_client_t)); |
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|
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pClient->pfnCallback = pfnCallback; |
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pClient->pvData = pvData; |
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|
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#ifdef DEBUG |
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fprintf(stderr, "lscp_client_create: pClient=%p: pszHost=%s iPort=%d.\n", pClient, pszHost, iPort); |
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#endif |
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|
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// Prepare the command connection socket... |
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|
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sock = socket(AF_INET, SOCK_STREAM, 0); |
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if (sock == INVALID_SOCKET) { |
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lscp_socket_perror("lscp_client_create: cmd: socket"); |
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free(pClient); |
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return NULL; |
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} |
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|
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#if defined(WIN32) |
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if (setsockopt(sock, SOL_SOCKET, SO_DONTLINGER, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR) |
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lscp_socket_perror("lscp_client_create: cmd: setsockopt(SO_DONTLINGER)"); |
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#endif |
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|
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#ifdef DEBUG |
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lscp_socket_getopts("lscp_client_create: cmd", sock); |
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#endif |
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|
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cAddr = sizeof(struct sockaddr_in); |
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memset((char *) &addr, 0, cAddr); |
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addr.sin_family = pHost->h_addrtype; |
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memmove((char *) &(addr.sin_addr), pHost->h_addr, pHost->h_length); |
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addr.sin_port = htons((short) iPort); |
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|
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if (connect(sock, (struct sockaddr *) &addr, cAddr) == SOCKET_ERROR) { |
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lscp_socket_perror("lscp_client_create: cmd: connect"); |
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closesocket(sock); |
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free(pClient); |
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return NULL; |
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} |
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|
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// Initialize the command socket agent struct... |
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lscp_socket_agent_init(&(pClient->cmd), sock, &addr, cAddr); |
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|
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#ifdef DEBUG |
279 |
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)); |
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#endif |
281 |
|
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// Initialize the event service socket struct... |
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lscp_socket_agent_init(&(pClient->evt), INVALID_SOCKET, NULL, 0); |
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// No events subscribed, yet. |
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pClient->events = LSCP_EVENT_NONE; |
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// Initialize cached members. |
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pClient->audio_drivers = NULL; |
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pClient->midi_drivers = NULL; |
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pClient->audio_devices = NULL; |
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pClient->midi_devices = NULL; |
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pClient->engines = NULL; |
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pClient->channels = NULL; |
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lscp_driver_info_init(&(pClient->audio_info)); |
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lscp_driver_info_init(&(pClient->midi_info)); |
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lscp_engine_info_init(&(pClient->engine_info)); |
296 |
lscp_channel_info_init(&(pClient->channel_info)); |
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// Initialize error stuff. |
298 |
pClient->pszResult = NULL; |
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pClient->iErrno = -1; |
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// Stream usage stuff. |
301 |
pClient->buffer_fill = NULL; |
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pClient->iStreamCount = 0; |
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// Default timeout value. |
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pClient->iTimeout = LSCP_TIMEOUT_MSECS; |
305 |
|
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// Initialize the transaction mutex. |
307 |
lscp_mutex_init(pClient->mutex); |
308 |
|
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// Finally we've some success... |
310 |
return pClient; |
311 |
} |
312 |
|
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|
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/** |
315 |
* Wait for a client instance to terminate graciously. |
316 |
* |
317 |
* @param pClient Pointer to client instance structure. |
318 |
*/ |
319 |
lscp_status_t lscp_client_join ( lscp_client_t *pClient ) |
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{ |
321 |
if (pClient == NULL) |
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return LSCP_FAILED; |
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|
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#ifdef DEBUG |
325 |
fprintf(stderr, "lscp_client_join: pClient=%p.\n", pClient); |
326 |
#endif |
327 |
|
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// lscp_socket_agent_join(&(pClient->evt)); |
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lscp_socket_agent_join(&(pClient->cmd)); |
330 |
|
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return LSCP_OK; |
332 |
} |
333 |
|
334 |
|
335 |
/** |
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* Terminate and destroy a client instance. |
337 |
* |
338 |
* @param pClient Pointer to client instance structure. |
339 |
* |
340 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
341 |
*/ |
342 |
lscp_status_t lscp_client_destroy ( lscp_client_t *pClient ) |
343 |
{ |
344 |
if (pClient == NULL) |
345 |
return LSCP_FAILED; |
346 |
|
347 |
#ifdef DEBUG |
348 |
fprintf(stderr, "lscp_client_destroy: pClient=%p.\n", pClient); |
349 |
#endif |
350 |
|
351 |
// Lock this section up. |
352 |
lscp_mutex_lock(pClient->mutex); |
353 |
|
354 |
// Free up all cached members. |
355 |
lscp_channel_info_reset(&(pClient->channel_info)); |
356 |
lscp_engine_info_reset(&(pClient->engine_info)); |
357 |
lscp_driver_info_reset(&(pClient->midi_info)); |
358 |
lscp_driver_info_reset(&(pClient->audio_info)); |
359 |
// Free available engine table. |
360 |
lscp_szsplit_destroy(pClient->audio_drivers); |
361 |
lscp_szsplit_destroy(pClient->midi_drivers); |
362 |
lscp_isplit_destroy(pClient->audio_devices); |
363 |
lscp_isplit_destroy(pClient->midi_devices); |
364 |
lscp_szsplit_destroy(pClient->engines); |
365 |
lscp_isplit_destroy(pClient->channels); |
366 |
// Make them null. |
367 |
pClient->audio_drivers = NULL; |
368 |
pClient->midi_drivers = NULL; |
369 |
pClient->engines = NULL; |
370 |
// Free result error stuff. |
371 |
lscp_client_set_result(pClient, NULL, 0); |
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// Frre stream usage stuff. |
373 |
if (pClient->buffer_fill) |
374 |
free(pClient->buffer_fill); |
375 |
pClient->buffer_fill = NULL; |
376 |
pClient->iStreamCount = 0; |
377 |
pClient->iTimeout = 0; |
378 |
|
379 |
// Free socket agents. |
380 |
lscp_socket_agent_free(&(pClient->evt)); |
381 |
lscp_socket_agent_free(&(pClient->cmd)); |
382 |
|
383 |
// Last but not least, free good ol'transaction mutex. |
384 |
lscp_mutex_unlock(pClient->mutex); |
385 |
lscp_mutex_destroy(pClient->mutex); |
386 |
|
387 |
free(pClient); |
388 |
|
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return LSCP_OK; |
390 |
} |
391 |
|
392 |
|
393 |
/** |
394 |
* Set the client transaction timeout interval. |
395 |
* |
396 |
* @param pClient Pointer to client instance structure. |
397 |
* @param iTimeout Transaction timeout in milliseconds. |
398 |
* |
399 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
400 |
*/ |
401 |
lscp_status_t lscp_client_set_timeout ( lscp_client_t *pClient, int iTimeout ) |
402 |
{ |
403 |
if (pClient == NULL) |
404 |
return LSCP_FAILED; |
405 |
if (iTimeout < 0) |
406 |
return LSCP_FAILED; |
407 |
|
408 |
pClient->iTimeout = iTimeout; |
409 |
return LSCP_OK; |
410 |
} |
411 |
|
412 |
|
413 |
/** |
414 |
* Get the client transaction timeout interval. |
415 |
* |
416 |
* @param pClient Pointer to client instance structure. |
417 |
* |
418 |
* @returns The current timeout value milliseconds, -1 in case of failure. |
419 |
*/ |
420 |
int lscp_client_get_timeout ( lscp_client_t *pClient ) |
421 |
{ |
422 |
if (pClient == NULL) |
423 |
return -1; |
424 |
|
425 |
return pClient->iTimeout; |
426 |
} |
427 |
|
428 |
|
429 |
//------------------------------------------------------------------------- |
430 |
// Client common protocol functions. |
431 |
|
432 |
/** |
433 |
* Submit a command query line string to the server. The query string |
434 |
* must be cr/lf and null terminated. Besides the return code, the |
435 |
* specific server response to the command request is made available |
436 |
* by the @ref lscp_client_get_result and @ref lscp_client_get_errno |
437 |
* function calls. |
438 |
* |
439 |
* @param pClient Pointer to client instance structure. |
440 |
* @param pszQuery Command request line to be sent to server, |
441 |
* must be cr/lf and null terminated. |
442 |
* |
443 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
444 |
*/ |
445 |
lscp_status_t lscp_client_query ( lscp_client_t *pClient, const char *pszQuery ) |
446 |
{ |
447 |
lscp_status_t ret; |
448 |
|
449 |
// Lock this section up. |
450 |
lscp_mutex_lock(pClient->mutex); |
451 |
|
452 |
// Just make the now guarded call. |
453 |
ret = lscp_client_call(pClient, pszQuery); |
454 |
|
455 |
// Unlock this section down. |
456 |
lscp_mutex_unlock(pClient->mutex); |
457 |
|
458 |
return ret; |
459 |
} |
460 |
|
461 |
/** |
462 |
* Get the last received result string. In case of error or warning, |
463 |
* this is the text of the error or warning message issued. |
464 |
* |
465 |
* @param pClient Pointer to client instance structure. |
466 |
* |
467 |
* @returns A pointer to the literal null-terminated result string as |
468 |
* of the last command request. |
469 |
*/ |
470 |
const char *lscp_client_get_result ( lscp_client_t *pClient ) |
471 |
{ |
472 |
if (pClient == NULL) |
473 |
return NULL; |
474 |
|
475 |
return pClient->pszResult; |
476 |
} |
477 |
|
478 |
|
479 |
/** |
480 |
* Get the last error/warning number received. |
481 |
* |
482 |
* @param pClient Pointer to client instance structure. |
483 |
* |
484 |
* @returns The numerical value of the last error or warning |
485 |
* response code received. |
486 |
*/ |
487 |
int lscp_client_get_errno ( lscp_client_t *pClient ) |
488 |
{ |
489 |
if (pClient == NULL) |
490 |
return -1; |
491 |
|
492 |
return pClient->iErrno; |
493 |
} |
494 |
|
495 |
|
496 |
//------------------------------------------------------------------------- |
497 |
// Client registration protocol functions. |
498 |
|
499 |
/** |
500 |
* Register frontend for receiving event messages: |
501 |
* SUBSCRIBE CHANNELS | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL |
502 |
* | CHANNEL_INFO | MISCELLANEOUS |
503 |
* |
504 |
* @param pClient Pointer to client instance structure. |
505 |
* @param events Bit-wise OR'ed event flags to subscribe. |
506 |
* |
507 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
508 |
*/ |
509 |
lscp_status_t lscp_client_subscribe ( lscp_client_t *pClient, lscp_event_t events ) |
510 |
{ |
511 |
lscp_status_t ret = LSCP_FAILED; |
512 |
|
513 |
if (pClient == NULL) |
514 |
return LSCP_FAILED; |
515 |
|
516 |
// Lock this section up. |
517 |
lscp_mutex_lock(pClient->mutex); |
518 |
|
519 |
// If applicable, start the alternate connection... |
520 |
if (pClient->events == LSCP_EVENT_NONE) |
521 |
ret = _lscp_client_evt_connect(pClient); |
522 |
|
523 |
// Send the subscription commands. |
524 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNELS)) |
525 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNELS); |
526 |
if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT)) |
527 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_VOICE_COUNT); |
528 |
if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT)) |
529 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_STREAM_COUNT); |
530 |
if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL)) |
531 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_BUFFER_FILL); |
532 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO)) |
533 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNEL_INFO); |
534 |
if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS)) |
535 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_MISCELLANEOUS); |
536 |
|
537 |
// Unlock this section down. |
538 |
lscp_mutex_unlock(pClient->mutex); |
539 |
|
540 |
return ret; |
541 |
} |
542 |
|
543 |
|
544 |
/** |
545 |
* Deregister frontend from receiving UDP event messages anymore: |
546 |
* SUBSCRIBE CHANNELS | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL |
547 |
* | CHANNEL_INFO | MISCELLANEOUS |
548 |
* |
549 |
* @param pClient Pointer to client instance structure. |
550 |
* @param events Bit-wise OR'ed event flags to unsubscribe. |
551 |
* |
552 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
553 |
*/ |
554 |
lscp_status_t lscp_client_unsubscribe ( lscp_client_t *pClient, lscp_event_t events ) |
555 |
{ |
556 |
lscp_status_t ret = LSCP_OK; |
557 |
|
558 |
if (pClient == NULL) |
559 |
return LSCP_FAILED; |
560 |
|
561 |
// Lock this section up. |
562 |
lscp_mutex_lock(pClient->mutex); |
563 |
|
564 |
// Send the unsubscription commands. |
565 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNELS)) |
566 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNELS); |
567 |
if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT)) |
568 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_VOICE_COUNT); |
569 |
if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT)) |
570 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_STREAM_COUNT); |
571 |
if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL)) |
572 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_BUFFER_FILL); |
573 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO)) |
574 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNEL_INFO); |
575 |
if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS)) |
576 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_MISCELLANEOUS); |
577 |
|
578 |
// If necessary, close the alternate connection... |
579 |
if (pClient->events == LSCP_EVENT_NONE) |
580 |
lscp_socket_agent_free(&(pClient->evt)); |
581 |
|
582 |
// Unlock this section down. |
583 |
lscp_mutex_unlock(pClient->mutex); |
584 |
|
585 |
return ret; |
586 |
} |
587 |
|
588 |
|
589 |
//------------------------------------------------------------------------- |
590 |
// Client command protocol functions. |
591 |
|
592 |
/** |
593 |
* Loading an instrument: |
594 |
* LOAD INSTRUMENT <filename> <instr-index> <sampler-channel> |
595 |
* |
596 |
* @param pClient Pointer to client instance structure. |
597 |
* @param pszFileName Instrument file name. |
598 |
* @param iInstrIndex Instrument index number. |
599 |
* @param iSamplerChannel Sampler Channel. |
600 |
* |
601 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
602 |
*/ |
603 |
lscp_status_t lscp_load_instrument ( lscp_client_t *pClient, const char *pszFileName, int iInstrIndex, int iSamplerChannel ) |
604 |
{ |
605 |
char szQuery[LSCP_BUFSIZ]; |
606 |
|
607 |
if (pszFileName == NULL || iSamplerChannel < 0) |
608 |
return LSCP_FAILED; |
609 |
|
610 |
sprintf(szQuery, "LOAD INSTRUMENT '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel); |
611 |
return lscp_client_query(pClient, szQuery); |
612 |
} |
613 |
|
614 |
|
615 |
/** |
616 |
* Loading an instrument in the background (non modal): |
617 |
* LOAD INSTRUMENT NON_MODAL <filename> <instr-index> <sampler-channel> |
618 |
* |
619 |
* @param pClient Pointer to client instance structure. |
620 |
* @param pszFileName Instrument file name. |
621 |
* @param iInstrIndex Instrument index number. |
622 |
* @param iSamplerChannel Sampler Channel. |
623 |
* |
624 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
625 |
*/ |
626 |
lscp_status_t lscp_load_instrument_non_modal ( lscp_client_t *pClient, const char *pszFileName, int iInstrIndex, int iSamplerChannel ) |
627 |
{ |
628 |
char szQuery[LSCP_BUFSIZ]; |
629 |
|
630 |
if (pszFileName == NULL || iSamplerChannel < 0) |
631 |
return LSCP_FAILED; |
632 |
|
633 |
sprintf(szQuery, "LOAD INSTRUMENT NON_MODAL '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel); |
634 |
return lscp_client_query(pClient, szQuery); |
635 |
} |
636 |
|
637 |
|
638 |
/** |
639 |
* Loading a sampler engine: |
640 |
* LOAD ENGINE <engine-name> <sampler-channel> |
641 |
* |
642 |
* @param pClient Pointer to client instance structure. |
643 |
* @param pszEngineName Engine name. |
644 |
* @param iSamplerChannel Sampler channel number. |
645 |
* |
646 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
647 |
*/ |
648 |
lscp_status_t lscp_load_engine ( lscp_client_t *pClient, const char *pszEngineName, int iSamplerChannel ) |
649 |
{ |
650 |
char szQuery[LSCP_BUFSIZ]; |
651 |
|
652 |
if (pszEngineName == NULL || iSamplerChannel < 0) |
653 |
return LSCP_FAILED; |
654 |
|
655 |
sprintf(szQuery, "LOAD ENGINE %s %d\r\n", pszEngineName, iSamplerChannel); |
656 |
return lscp_client_query(pClient, szQuery); |
657 |
} |
658 |
|
659 |
|
660 |
/** |
661 |
* Current number of sampler channels: |
662 |
* GET CHANNELS |
663 |
* |
664 |
* @param pClient Pointer to client instance structure. |
665 |
* |
666 |
* @returns The current total number of sampler channels on success, |
667 |
* -1 otherwise. |
668 |
*/ |
669 |
int lscp_get_channels ( lscp_client_t *pClient ) |
670 |
{ |
671 |
int iChannels = -1; |
672 |
|
673 |
// Lock this section up. |
674 |
lscp_mutex_lock(pClient->mutex); |
675 |
|
676 |
if (lscp_client_call(pClient, "GET CHANNELS\r\n") == LSCP_OK) |
677 |
iChannels = atoi(lscp_client_get_result(pClient)); |
678 |
|
679 |
// Unlock this section doen. |
680 |
lscp_mutex_unlock(pClient->mutex); |
681 |
|
682 |
return iChannels; |
683 |
} |
684 |
|
685 |
|
686 |
/** |
687 |
* List current sampler channels number identifiers: |
688 |
* LIST CHANNELS |
689 |
* |
690 |
* @param pClient Pointer to client instance structure. |
691 |
* |
692 |
* @returns An array of the sampler channels identifiers as positive integers, |
693 |
* terminated with -1 on success, NULL otherwise. |
694 |
*/ |
695 |
int *lscp_list_channels ( lscp_client_t *pClient ) |
696 |
{ |
697 |
const char *pszSeps = ","; |
698 |
|
699 |
if (pClient == NULL) |
700 |
return NULL; |
701 |
|
702 |
// Lock this section up. |
703 |
lscp_mutex_lock(pClient->mutex); |
704 |
|
705 |
if (pClient->channels) { |
706 |
lscp_isplit_destroy(pClient->channels); |
707 |
pClient->channels = NULL; |
708 |
} |
709 |
|
710 |
if (lscp_client_call(pClient, "LIST CHANNELS\r\n") == LSCP_OK) |
711 |
pClient->channels = lscp_isplit_create(lscp_client_get_result(pClient), pszSeps); |
712 |
|
713 |
// Unlock this section down. |
714 |
lscp_mutex_unlock(pClient->mutex); |
715 |
|
716 |
return pClient->channels; |
717 |
} |
718 |
|
719 |
|
720 |
/** |
721 |
* Adding a new sampler channel: |
722 |
* ADD CHANNEL |
723 |
* |
724 |
* @param pClient Pointer to client instance structure. |
725 |
* |
726 |
* @returns The new sampler channel number identifier, |
727 |
* or -1 in case of failure. |
728 |
*/ |
729 |
int lscp_add_channel ( lscp_client_t *pClient ) |
730 |
{ |
731 |
int iSamplerChannel = -1; |
732 |
|
733 |
// Lock this section up. |
734 |
lscp_mutex_lock(pClient->mutex); |
735 |
|
736 |
if (lscp_client_call(pClient, "ADD CHANNEL\r\n") == LSCP_OK) |
737 |
iSamplerChannel = atoi(lscp_client_get_result(pClient)); |
738 |
|
739 |
// Unlock this section down. |
740 |
lscp_mutex_unlock(pClient->mutex); |
741 |
|
742 |
return iSamplerChannel; |
743 |
} |
744 |
|
745 |
|
746 |
/** |
747 |
* Removing a sampler channel: |
748 |
* REMOVE CHANNEL <sampler-channel> |
749 |
* |
750 |
* @param pClient Pointer to client instance structure. |
751 |
* @param iSamplerChannel Sampler channel number. |
752 |
* |
753 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
754 |
*/ |
755 |
lscp_status_t lscp_remove_channel ( lscp_client_t *pClient, int iSamplerChannel ) |
756 |
{ |
757 |
char szQuery[LSCP_BUFSIZ]; |
758 |
|
759 |
if (iSamplerChannel < 0) |
760 |
return LSCP_FAILED; |
761 |
|
762 |
sprintf(szQuery, "REMOVE CHANNEL %d\r\n", iSamplerChannel); |
763 |
return lscp_client_query(pClient, szQuery); |
764 |
} |
765 |
|
766 |
|
767 |
/** |
768 |
* Getting all available engines: |
769 |
* GET AVAILABLE_ENGINES |
770 |
* |
771 |
* @param pClient Pointer to client instance structure. |
772 |
* |
773 |
* @returns A NULL terminated array of engine name strings, |
774 |
* or NULL in case of failure. |
775 |
*/ |
776 |
const char **lscp_get_available_engines ( lscp_client_t *pClient ) |
777 |
{ |
778 |
const char *pszSeps = ","; |
779 |
|
780 |
// Lock this section up. |
781 |
lscp_mutex_lock(pClient->mutex); |
782 |
|
783 |
if (pClient->engines) { |
784 |
lscp_szsplit_destroy(pClient->engines); |
785 |
pClient->engines = NULL; |
786 |
} |
787 |
|
788 |
if (lscp_client_call(pClient, "GET AVAILABLE_ENGINES\r\n") == LSCP_OK) |
789 |
pClient->engines = lscp_szsplit_create(lscp_client_get_result(pClient), pszSeps); |
790 |
|
791 |
// Unlock this section down. |
792 |
lscp_mutex_unlock(pClient->mutex); |
793 |
|
794 |
return (const char **) pClient->engines; |
795 |
} |
796 |
|
797 |
|
798 |
/** |
799 |
* Getting information about an engine. |
800 |
* GET ENGINE INFO <engine-name> |
801 |
* |
802 |
* @param pClient Pointer to client instance structure. |
803 |
* @param pszEngineName Engine name. |
804 |
* |
805 |
* @returns A pointer to a @ref lscp_engine_info_t structure, with all the |
806 |
* information of the given sampler engine, or NULL in case of failure. |
807 |
*/ |
808 |
lscp_engine_info_t *lscp_get_engine_info ( lscp_client_t *pClient, const char *pszEngineName ) |
809 |
{ |
810 |
lscp_engine_info_t *pEngineInfo; |
811 |
char szQuery[LSCP_BUFSIZ]; |
812 |
const char *pszResult; |
813 |
const char *pszSeps = ":"; |
814 |
const char *pszCrlf = "\r\n"; |
815 |
char *pszToken; |
816 |
char *pch; |
817 |
|
818 |
if (pszEngineName == NULL) |
819 |
return NULL; |
820 |
|
821 |
// Lock this section up. |
822 |
lscp_mutex_lock(pClient->mutex); |
823 |
|
824 |
pEngineInfo = &(pClient->engine_info); |
825 |
lscp_engine_info_reset(pEngineInfo); |
826 |
|
827 |
sprintf(szQuery, "GET ENGINE INFO %s\r\n", pszEngineName); |
828 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) { |
829 |
pszResult = lscp_client_get_result(pClient); |
830 |
pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch)); |
831 |
while (pszToken) { |
832 |
if (strcasecmp(pszToken, "DESCRIPTION") == 0) { |
833 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
834 |
if (pszToken) |
835 |
pEngineInfo->description = lscp_unquote(&pszToken, 1); |
836 |
} |
837 |
else if (strcasecmp(pszToken, "VERSION") == 0) { |
838 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
839 |
if (pszToken) |
840 |
pEngineInfo->version = lscp_unquote(&pszToken, 1); |
841 |
} |
842 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
843 |
} |
844 |
} |
845 |
else pEngineInfo = NULL; |
846 |
|
847 |
// Unlock this section down. |
848 |
lscp_mutex_unlock(pClient->mutex); |
849 |
|
850 |
return pEngineInfo; |
851 |
} |
852 |
|
853 |
|
854 |
/** |
855 |
* Getting sampler channel informations: |
856 |
* GET CHANNEL INFO <sampler-channel> |
857 |
* |
858 |
* @param pClient Pointer to client instance structure. |
859 |
* @param iSamplerChannel Sampler channel number. |
860 |
* |
861 |
* @returns A pointer to a @ref lscp_channel_info_t structure, with all the |
862 |
* information of the given sampler channel, or NULL in case of failure. |
863 |
*/ |
864 |
lscp_channel_info_t *lscp_get_channel_info ( lscp_client_t *pClient, int iSamplerChannel ) |
865 |
{ |
866 |
lscp_channel_info_t *pChannelInfo; |
867 |
char szQuery[LSCP_BUFSIZ]; |
868 |
const char *pszResult; |
869 |
const char *pszSeps = ":"; |
870 |
const char *pszCrlf = "\r\n"; |
871 |
char *pszToken; |
872 |
char *pch; |
873 |
|
874 |
if (iSamplerChannel < 0) |
875 |
return NULL; |
876 |
|
877 |
// Lock this section up. |
878 |
lscp_mutex_lock(pClient->mutex); |
879 |
|
880 |
pChannelInfo = &(pClient->channel_info); |
881 |
lscp_channel_info_reset(pChannelInfo); |
882 |
|
883 |
sprintf(szQuery, "GET CHANNEL INFO %d\r\n", iSamplerChannel); |
884 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) { |
885 |
pszResult = lscp_client_get_result(pClient); |
886 |
pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch)); |
887 |
while (pszToken) { |
888 |
if (strcasecmp(pszToken, "ENGINE_NAME") == 0) { |
889 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
890 |
if (pszToken) |
891 |
pChannelInfo->engine_name = lscp_unquote(&pszToken, 1); |
892 |
} |
893 |
else if (strcasecmp(pszToken, "AUDIO_OUTPUT_DEVICE") == 0) { |
894 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
895 |
if (pszToken) |
896 |
pChannelInfo->audio_device = atoi(lscp_ltrim(pszToken)); |
897 |
} |
898 |
else if (strcasecmp(pszToken, "AUDIO_OUTPUT_CHANNELS") == 0) { |
899 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
900 |
if (pszToken) |
901 |
pChannelInfo->audio_channels = atoi(lscp_ltrim(pszToken)); |
902 |
} |
903 |
else if (strcasecmp(pszToken, "AUDIO_OUTPUT_ROUTING") == 0) { |
904 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
905 |
if (pszToken) |
906 |
pChannelInfo->audio_routing = lscp_szsplit_create(pszToken, ","); |
907 |
} |
908 |
else if (strcasecmp(pszToken, "INSTRUMENT_FILE") == 0) { |
909 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
910 |
if (pszToken) |
911 |
pChannelInfo->instrument_file = lscp_unquote(&pszToken, 1); |
912 |
} |
913 |
else if (strcasecmp(pszToken, "INSTRUMENT_NR") == 0) { |
914 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
915 |
if (pszToken) |
916 |
pChannelInfo->instrument_nr = atoi(lscp_ltrim(pszToken)); |
917 |
} |
918 |
else if (strcasecmp(pszToken, "INSTRUMENT_STATUS") == 0) { |
919 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
920 |
if (pszToken) |
921 |
pChannelInfo->instrument_status = atoi(lscp_ltrim(pszToken)); |
922 |
} |
923 |
else if (strcasecmp(pszToken, "MIDI_INPUT_DEVICE") == 0) { |
924 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
925 |
if (pszToken) |
926 |
pChannelInfo->midi_device = atoi(lscp_ltrim(pszToken)); |
927 |
} |
928 |
else if (strcasecmp(pszToken, "MIDI_INPUT_PORT") == 0) { |
929 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
930 |
if (pszToken) |
931 |
pChannelInfo->midi_port = atoi(lscp_ltrim(pszToken)); |
932 |
} |
933 |
else if (strcasecmp(pszToken, "MIDI_INPUT_CHANNEL") == 0) { |
934 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
935 |
if (pszToken) |
936 |
pChannelInfo->midi_channel = atoi(lscp_ltrim(pszToken)); |
937 |
} |
938 |
else if (strcasecmp(pszToken, "VOLUME") == 0) { |
939 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
940 |
if (pszToken) |
941 |
pChannelInfo->volume = (float) atof(lscp_ltrim(pszToken)); |
942 |
} |
943 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
944 |
} |
945 |
} |
946 |
else pChannelInfo = NULL; |
947 |
|
948 |
// Unlock this section up. |
949 |
lscp_mutex_unlock(pClient->mutex); |
950 |
|
951 |
return pChannelInfo; |
952 |
} |
953 |
|
954 |
|
955 |
/** |
956 |
* Current number of active voices: |
957 |
* GET CHANNEL VOICE_COUNT <sampler-channel> |
958 |
* |
959 |
* @param pClient Pointer to client instance structure. |
960 |
* @param iSamplerChannel Sampler channel number. |
961 |
* |
962 |
* @returns The number of voices currently active, -1 in case of failure. |
963 |
*/ |
964 |
int lscp_get_channel_voice_count ( lscp_client_t *pClient, int iSamplerChannel ) |
965 |
{ |
966 |
char szQuery[LSCP_BUFSIZ]; |
967 |
int iVoiceCount = -1; |
968 |
|
969 |
if (iSamplerChannel < 0) |
970 |
return iVoiceCount; |
971 |
|
972 |
// Lock this section up. |
973 |
lscp_mutex_lock(pClient->mutex); |
974 |
|
975 |
sprintf(szQuery, "GET CHANNEL VOICE_COUNT %d\r\n", iSamplerChannel); |
976 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) |
977 |
iVoiceCount = atoi(lscp_client_get_result(pClient)); |
978 |
|
979 |
// Unlock this section down. |
980 |
lscp_mutex_unlock(pClient->mutex); |
981 |
|
982 |
return iVoiceCount; |
983 |
} |
984 |
|
985 |
|
986 |
/** |
987 |
* Current number of active disk streams: |
988 |
* GET CHANNEL STREAM_COUNT <sampler-channel> |
989 |
* |
990 |
* @returns The number of active disk streams on success, -1 otherwise. |
991 |
*/ |
992 |
int lscp_get_channel_stream_count ( lscp_client_t *pClient, int iSamplerChannel ) |
993 |
{ |
994 |
char szQuery[LSCP_BUFSIZ]; |
995 |
int iStreamCount = -1; |
996 |
|
997 |
if (iSamplerChannel < 0) |
998 |
return iStreamCount; |
999 |
|
1000 |
// Lock this section up. |
1001 |
lscp_mutex_lock(pClient->mutex); |
1002 |
|
1003 |
sprintf(szQuery, "GET CHANNEL STREAM_COUNT %d\r\n", iSamplerChannel); |
1004 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) |
1005 |
iStreamCount = atoi(lscp_client_get_result(pClient)); |
1006 |
|
1007 |
// Unlock this section down. |
1008 |
lscp_mutex_unlock(pClient->mutex); |
1009 |
|
1010 |
return iStreamCount; |
1011 |
} |
1012 |
|
1013 |
|
1014 |
/** |
1015 |
* Current fill state of disk stream buffers: |
1016 |
* GET CHANNEL BUFFER_FILL {BYTES|PERCENTAGE} <sampler-channel> |
1017 |
* |
1018 |
* @param pClient Pointer to client instance structure. |
1019 |
* @param usage_type Usage type to be returned, either |
1020 |
* @ref LSCP_USAGE_BYTES, or |
1021 |
* @ref LSCP_USAGE_PERCENTAGE. |
1022 |
* @param iSamplerChannel Sampler channel number. |
1023 |
* |
1024 |
* @returns A pointer to a @ref lscp_buffer_fill_t structure, with the |
1025 |
* information of the current disk stream buffer fill usage, for the given |
1026 |
* sampler channel, or NULL in case of failure. |
1027 |
*/ |
1028 |
lscp_buffer_fill_t *lscp_get_channel_buffer_fill ( lscp_client_t *pClient, lscp_usage_t usage_type, int iSamplerChannel ) |
1029 |
{ |
1030 |
lscp_buffer_fill_t *pBufferFill; |
1031 |
char szQuery[LSCP_BUFSIZ]; |
1032 |
int iStreamCount; |
1033 |
const char *pszUsageType = (usage_type == LSCP_USAGE_BYTES ? "BYTES" : "PERCENTAGE"); |
1034 |
const char *pszResult; |
1035 |
const char *pszSeps = "[]%,"; |
1036 |
char *pszToken; |
1037 |
char *pch; |
1038 |
int iStream; |
1039 |
|
1040 |
// Retrieve a channel stream estimation. |
1041 |
iStreamCount = lscp_get_channel_stream_count(pClient, iSamplerChannel); |
1042 |
if (pClient->iStreamCount < 0) |
1043 |
return NULL; |
1044 |
|
1045 |
// Lock this section up. |
1046 |
lscp_mutex_lock(pClient->mutex); |
1047 |
|
1048 |
// Check if we need to reallocate the stream usage array. |
1049 |
if (pClient->iStreamCount != iStreamCount) { |
1050 |
if (pClient->buffer_fill) |
1051 |
free(pClient->buffer_fill); |
1052 |
if (iStreamCount > 0) |
1053 |
pClient->buffer_fill = (lscp_buffer_fill_t *) malloc(iStreamCount * sizeof(lscp_buffer_fill_t)); |
1054 |
else |
1055 |
pClient->buffer_fill = NULL; |
1056 |
pClient->iStreamCount = iStreamCount; |
1057 |
} |
1058 |
|
1059 |
// Get buffer fill usage... |
1060 |
pBufferFill = pClient->buffer_fill; |
1061 |
if (pBufferFill && iStreamCount > 0) { |
1062 |
iStream = 0; |
1063 |
pBufferFill = pClient->buffer_fill; |
1064 |
sprintf(szQuery, "GET CHANNEL BUFFER_FILL %s %d\r\n", pszUsageType, iSamplerChannel); |
1065 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) { |
1066 |
pszResult = lscp_client_get_result(pClient); |
1067 |
pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch)); |
1068 |
while (pszToken && iStream < pClient->iStreamCount) { |
1069 |
if (*pszToken) { |
1070 |
pBufferFill[iStream].stream_id = atol(pszToken); |
1071 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
1072 |
if (pszToken == NULL) |
1073 |
break; |
1074 |
pBufferFill[iStream].stream_usage = atol(pszToken); |
1075 |
iStream++; |
1076 |
} |
1077 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
1078 |
} |
1079 |
} // Reset the usage, whatever it was before. |
1080 |
else while (iStream < pClient->iStreamCount) |
1081 |
pBufferFill[iStream++].stream_usage = 0; |
1082 |
} |
1083 |
|
1084 |
// Unlock this section down. |
1085 |
lscp_mutex_unlock(pClient->mutex); |
1086 |
|
1087 |
return pBufferFill; |
1088 |
} |
1089 |
|
1090 |
|
1091 |
/** |
1092 |
* Setting audio output type: |
1093 |
* SET CHANNEL AUDIO_OUTPUT_TYPE <sampler-channel> <audio-output-type> |
1094 |
* |
1095 |
* @param pClient Pointer to client instance structure. |
1096 |
* @param iSamplerChannel Sampler channel number. |
1097 |
* @param pszAudioDriver Audio output driver type (e.g. "ALSA" or "JACK"). |
1098 |
*/ |
1099 |
lscp_status_t lscp_set_channel_audio_type ( lscp_client_t *pClient, int iSamplerChannel, const char *pszAudioDriver ) |
1100 |
{ |
1101 |
char szQuery[LSCP_BUFSIZ]; |
1102 |
|
1103 |
if (iSamplerChannel < 0 || pszAudioDriver == NULL) |
1104 |
return LSCP_FAILED; |
1105 |
|
1106 |
sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_TYPE %d %s\r\n", iSamplerChannel, pszAudioDriver); |
1107 |
return lscp_client_query(pClient, szQuery); |
1108 |
} |
1109 |
|
1110 |
|
1111 |
/** |
1112 |
* Setting audio output device: |
1113 |
* SET CHANNEL AUDIO_OUTPUT_DEVICE <sampler-channel> <device-id> |
1114 |
* |
1115 |
* @param pClient Pointer to client instance structure. |
1116 |
* @param iSamplerChannel Sampler channel number. |
1117 |
* @param iAudioDevice Audio output device number identifier. |
1118 |
*/ |
1119 |
lscp_status_t lscp_set_channel_audio_device ( lscp_client_t *pClient, int iSamplerChannel, int iAudioDevice ) |
1120 |
{ |
1121 |
char szQuery[LSCP_BUFSIZ]; |
1122 |
|
1123 |
if (iSamplerChannel < 0 || iAudioDevice < 0) |
1124 |
return LSCP_FAILED; |
1125 |
|
1126 |
sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_DEVICE %d %d\r\n", iSamplerChannel, iAudioDevice); |
1127 |
return lscp_client_query(pClient, szQuery); |
1128 |
} |
1129 |
|
1130 |
|
1131 |
/** |
1132 |
* Setting audio output channel: |
1133 |
* SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-output-chan> <audio-input-chan> |
1134 |
* |
1135 |
* @param pClient Pointer to client instance structure. |
1136 |
* @param iSamplerChannel Sampler channel number. |
1137 |
* @param iAudioOut Audio output device channel to be routed from. |
1138 |
* @param iAudioIn Audio output device channel to be routed into. |
1139 |
* |
1140 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1141 |
*/ |
1142 |
lscp_status_t lscp_set_channel_audio_channel ( lscp_client_t *pClient, int iSamplerChannel, int iAudioOut, int iAudioIn ) |
1143 |
{ |
1144 |
char szQuery[LSCP_BUFSIZ]; |
1145 |
|
1146 |
if (iSamplerChannel < 0 || iAudioOut < 0 || iAudioIn < 0) |
1147 |
return LSCP_FAILED; |
1148 |
|
1149 |
sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_CHANNELS %d %d %d\r\n", iSamplerChannel, iAudioOut, iAudioIn); |
1150 |
return lscp_client_query(pClient, szQuery); |
1151 |
} |
1152 |
|
1153 |
|
1154 |
/** |
1155 |
* Setting MIDI input type: |
1156 |
* SET CHANNEL MIDI_INPUT_TYPE <sampler-channel> <midi-input-type> |
1157 |
* |
1158 |
* @param pClient Pointer to client instance structure. |
1159 |
* @param iSamplerChannel Sampler channel number. |
1160 |
* @param pszMidiDriver MIDI input driver type (e.g. "ALSA"). |
1161 |
* |
1162 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1163 |
*/ |
1164 |
lscp_status_t lscp_set_channel_midi_type ( lscp_client_t *pClient, int iSamplerChannel, const char *pszMidiDriver ) |
1165 |
{ |
1166 |
char szQuery[LSCP_BUFSIZ]; |
1167 |
|
1168 |
if (iSamplerChannel < 0 || pszMidiDriver == NULL) |
1169 |
return LSCP_FAILED; |
1170 |
|
1171 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_TYPE %d %s\r\n", iSamplerChannel, pszMidiDriver); |
1172 |
return lscp_client_query(pClient, szQuery); |
1173 |
} |
1174 |
|
1175 |
|
1176 |
/** |
1177 |
* Setting MIDI input device: |
1178 |
* SET CHANNEL MIDI_INPUT_DEVICE <sampler-channel> <device-id> |
1179 |
* |
1180 |
* @param pClient Pointer to client instance structure. |
1181 |
* @param iSamplerChannel Sampler channel number. |
1182 |
* @param iMidiDevice MIDI input device number identifier. |
1183 |
*/ |
1184 |
lscp_status_t lscp_set_channel_midi_device ( lscp_client_t *pClient, int iSamplerChannel, int iMidiDevice ) |
1185 |
{ |
1186 |
char szQuery[LSCP_BUFSIZ]; |
1187 |
|
1188 |
if (iSamplerChannel < 0 || iMidiDevice < 0) |
1189 |
return LSCP_FAILED; |
1190 |
|
1191 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_DEVICE %d %d\r\n", iSamplerChannel, iMidiDevice); |
1192 |
return lscp_client_query(pClient, szQuery); |
1193 |
} |
1194 |
|
1195 |
|
1196 |
/** |
1197 |
* Setting MIDI input port: |
1198 |
* SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port> |
1199 |
* |
1200 |
* @param pClient Pointer to client instance structure. |
1201 |
* @param iSamplerChannel Sampler channel number. |
1202 |
* @param iMidiPort MIDI input driver virtual port number. |
1203 |
* |
1204 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1205 |
*/ |
1206 |
lscp_status_t lscp_set_channel_midi_port ( lscp_client_t *pClient, int iSamplerChannel, int iMidiPort ) |
1207 |
{ |
1208 |
char szQuery[LSCP_BUFSIZ]; |
1209 |
|
1210 |
if (iSamplerChannel < 0 || iMidiPort < 0) |
1211 |
return LSCP_FAILED; |
1212 |
|
1213 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_PORT %d %d\r\n", iSamplerChannel, iMidiPort); |
1214 |
return lscp_client_query(pClient, szQuery); |
1215 |
} |
1216 |
|
1217 |
|
1218 |
/** |
1219 |
* Setting MIDI input channel: |
1220 |
* SET CHANNEL MIDI_INPUT_CHANNEL <sampler-channel> <midi-input-chan> |
1221 |
* |
1222 |
* @param pClient Pointer to client instance structure. |
1223 |
* @param iSamplerChannel Sampler channel number. |
1224 |
* @param iMidiChannel MIDI channel number to listen (1-16) or |
1225 |
* zero (0) to listen on all channels. |
1226 |
* |
1227 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1228 |
*/ |
1229 |
lscp_status_t lscp_set_channel_midi_channel ( lscp_client_t *pClient, int iSamplerChannel, int iMidiChannel ) |
1230 |
{ |
1231 |
char szQuery[LSCP_BUFSIZ]; |
1232 |
|
1233 |
if (iSamplerChannel < 0 || iMidiChannel < 0 || iMidiChannel > 16) |
1234 |
return LSCP_FAILED; |
1235 |
|
1236 |
if (iMidiChannel > 0) |
1237 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d %d\r\n", iSamplerChannel, iMidiChannel); |
1238 |
else |
1239 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d ALL\r\n", iSamplerChannel); |
1240 |
return lscp_client_query(pClient, szQuery); |
1241 |
} |
1242 |
|
1243 |
|
1244 |
/** |
1245 |
* Setting channel volume: |
1246 |
* SET CHANNEL VOLUME <sampler-channel> <volume> |
1247 |
* |
1248 |
* @param pClient Pointer to client instance structure. |
1249 |
* @param iSamplerChannel Sampler channel number. |
1250 |
* @param fVolume Sampler channel volume as a positive floating point |
1251 |
* number, where a value less than 1.0 for attenuation, |
1252 |
* and greater than 1.0 for amplification. |
1253 |
* |
1254 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1255 |
*/ |
1256 |
lscp_status_t lscp_set_channel_volume ( lscp_client_t *pClient, int iSamplerChannel, float fVolume ) |
1257 |
{ |
1258 |
char szQuery[LSCP_BUFSIZ]; |
1259 |
|
1260 |
if (iSamplerChannel < 0 || fVolume < 0.0) |
1261 |
return LSCP_FAILED; |
1262 |
|
1263 |
sprintf(szQuery, "SET CHANNEL VOLUME %d %g\r\n", iSamplerChannel, fVolume); |
1264 |
return lscp_client_query(pClient, szQuery); |
1265 |
} |
1266 |
|
1267 |
|
1268 |
/** |
1269 |
* Resetting a sampler channel: |
1270 |
* RESET CHANNEL <sampler-channel> |
1271 |
* |
1272 |
* @param pClient Pointer to client instance structure. |
1273 |
* @param iSamplerChannel Sampler channel number. |
1274 |
* |
1275 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1276 |
*/ |
1277 |
lscp_status_t lscp_reset_channel ( lscp_client_t *pClient, int iSamplerChannel ) |
1278 |
{ |
1279 |
char szQuery[LSCP_BUFSIZ]; |
1280 |
|
1281 |
if (iSamplerChannel < 0) |
1282 |
return LSCP_FAILED; |
1283 |
|
1284 |
sprintf(szQuery, "RESET CHANNEL %d\r\n", iSamplerChannel); |
1285 |
return lscp_client_query(pClient, szQuery); |
1286 |
} |
1287 |
|
1288 |
|
1289 |
// end of client.c |