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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 = LSCP_EVENT_NONE; |
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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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if (strcasecmp(pszToken, "CHANNELS") == 0) |
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event = LSCP_EVENT_CHANNELS; |
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else if (strcasecmp(pszToken, "VOICE_COUNT") == 0) |
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event = LSCP_EVENT_VOICE_COUNT; |
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else if (strcasecmp(pszToken, "STREAM_COUNT") == 0) |
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event = LSCP_EVENT_STREAM_COUNT; |
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else if (strcasecmp(pszToken, "BUFFER_FILL") == 0) |
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event = LSCP_EVENT_BUFFER_FILL; |
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else if (strcasecmp(pszToken, "CHANNEL_INFO") == 0) |
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event = LSCP_EVENT_CHANNEL_INFO; |
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else if (strcasecmp(pszToken, "MISCELLANEOUS") == 0) |
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event = LSCP_EVENT_MISCELLANEOUS; |
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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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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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switch (event) { |
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case LSCP_EVENT_CHANNELS: |
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pszEvent = "CHANNELS"; |
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break; |
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case LSCP_EVENT_VOICE_COUNT: |
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pszEvent = "VOICE_COUNT"; |
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break; |
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case LSCP_EVENT_STREAM_COUNT: |
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pszEvent = "STREAM_COUNT"; |
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break; |
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case LSCP_EVENT_BUFFER_FILL: |
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pszEvent = "BUFFER_FILL"; |
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break; |
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case LSCP_EVENT_CHANNEL_INFO: |
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pszEvent = "CHANNEL_INFO"; |
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break; |
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case LSCP_EVENT_MISCELLANEOUS: |
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pszEvent = "CHANNEL_INFO"; |
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break; |
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default: |
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return LSCP_FAILED; |
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} |
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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; |
281 |
} |
282 |
|
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#if defined(WIN32) |
284 |
if (setsockopt(sock, SOL_SOCKET, SO_DONTLINGER, (char *) &iSockOpt, sizeof(int)) == SOCKET_ERROR) |
285 |
lscp_socket_perror("lscp_client_create: cmd: setsockopt(SO_DONTLINGER)"); |
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#endif |
287 |
|
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#ifdef DEBUG |
289 |
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); |
297 |
|
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if (connect(sock, (struct sockaddr *) &addr, cAddr) == SOCKET_ERROR) { |
299 |
lscp_socket_perror("lscp_client_create: cmd: connect"); |
300 |
closesocket(sock); |
301 |
free(pClient); |
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return NULL; |
303 |
} |
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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); |
307 |
|
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#ifdef DEBUG |
309 |
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)); |
310 |
#endif |
311 |
|
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// Initialize the event service socket struct... |
313 |
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)); |
326 |
lscp_channel_info_init(&(pClient->channel_info)); |
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// Initialize error stuff. |
328 |
pClient->pszResult = NULL; |
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pClient->iErrno = -1; |
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// Stream usage stuff. |
331 |
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; |
335 |
|
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// Initialize the transaction mutex. |
337 |
lscp_mutex_init(pClient->mutex); |
338 |
|
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// Finally we've some success... |
340 |
return pClient; |
341 |
} |
342 |
|
343 |
|
344 |
/** |
345 |
* Wait for a client instance to terminate graciously. |
346 |
* |
347 |
* @param pClient Pointer to client instance structure. |
348 |
*/ |
349 |
lscp_status_t lscp_client_join ( lscp_client_t *pClient ) |
350 |
{ |
351 |
if (pClient == NULL) |
352 |
return LSCP_FAILED; |
353 |
|
354 |
#ifdef DEBUG |
355 |
fprintf(stderr, "lscp_client_join: pClient=%p.\n", pClient); |
356 |
#endif |
357 |
|
358 |
// lscp_socket_agent_join(&(pClient->evt)); |
359 |
lscp_socket_agent_join(&(pClient->cmd)); |
360 |
|
361 |
return LSCP_OK; |
362 |
} |
363 |
|
364 |
|
365 |
/** |
366 |
* Terminate and destroy a client instance. |
367 |
* |
368 |
* @param pClient Pointer to client instance structure. |
369 |
* |
370 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
371 |
*/ |
372 |
lscp_status_t lscp_client_destroy ( lscp_client_t *pClient ) |
373 |
{ |
374 |
if (pClient == NULL) |
375 |
return LSCP_FAILED; |
376 |
|
377 |
#ifdef DEBUG |
378 |
fprintf(stderr, "lscp_client_destroy: pClient=%p.\n", pClient); |
379 |
#endif |
380 |
|
381 |
// Lock this section up. |
382 |
lscp_mutex_lock(pClient->mutex); |
383 |
|
384 |
// Free up all cached members. |
385 |
lscp_channel_info_reset(&(pClient->channel_info)); |
386 |
lscp_engine_info_reset(&(pClient->engine_info)); |
387 |
lscp_driver_info_reset(&(pClient->midi_info)); |
388 |
lscp_driver_info_reset(&(pClient->audio_info)); |
389 |
// Free available engine table. |
390 |
lscp_szsplit_destroy(pClient->audio_drivers); |
391 |
lscp_szsplit_destroy(pClient->midi_drivers); |
392 |
lscp_isplit_destroy(pClient->audio_devices); |
393 |
lscp_isplit_destroy(pClient->midi_devices); |
394 |
lscp_szsplit_destroy(pClient->engines); |
395 |
lscp_isplit_destroy(pClient->channels); |
396 |
// Make them null. |
397 |
pClient->audio_drivers = NULL; |
398 |
pClient->midi_drivers = NULL; |
399 |
pClient->engines = NULL; |
400 |
// Free result error stuff. |
401 |
lscp_client_set_result(pClient, NULL, 0); |
402 |
// Frre stream usage stuff. |
403 |
if (pClient->buffer_fill) |
404 |
free(pClient->buffer_fill); |
405 |
pClient->buffer_fill = NULL; |
406 |
pClient->iStreamCount = 0; |
407 |
pClient->iTimeout = 0; |
408 |
|
409 |
// Free socket agents. |
410 |
lscp_socket_agent_free(&(pClient->evt)); |
411 |
lscp_socket_agent_free(&(pClient->cmd)); |
412 |
|
413 |
// Last but not least, free good ol'transaction mutex. |
414 |
lscp_mutex_unlock(pClient->mutex); |
415 |
lscp_mutex_destroy(pClient->mutex); |
416 |
|
417 |
free(pClient); |
418 |
|
419 |
return LSCP_OK; |
420 |
} |
421 |
|
422 |
|
423 |
/** |
424 |
* Set the client transaction timeout interval. |
425 |
* |
426 |
* @param pClient Pointer to client instance structure. |
427 |
* @param iTimeout Transaction timeout in milliseconds. |
428 |
* |
429 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
430 |
*/ |
431 |
lscp_status_t lscp_client_set_timeout ( lscp_client_t *pClient, int iTimeout ) |
432 |
{ |
433 |
if (pClient == NULL) |
434 |
return LSCP_FAILED; |
435 |
if (iTimeout < 0) |
436 |
return LSCP_FAILED; |
437 |
|
438 |
pClient->iTimeout = iTimeout; |
439 |
return LSCP_OK; |
440 |
} |
441 |
|
442 |
|
443 |
/** |
444 |
* Get the client transaction timeout interval. |
445 |
* |
446 |
* @param pClient Pointer to client instance structure. |
447 |
* |
448 |
* @returns The current timeout value milliseconds, -1 in case of failure. |
449 |
*/ |
450 |
int lscp_client_get_timeout ( lscp_client_t *pClient ) |
451 |
{ |
452 |
if (pClient == NULL) |
453 |
return -1; |
454 |
|
455 |
return pClient->iTimeout; |
456 |
} |
457 |
|
458 |
|
459 |
//------------------------------------------------------------------------- |
460 |
// Client common protocol functions. |
461 |
|
462 |
/** |
463 |
* Submit a command query line string to the server. The query string |
464 |
* must be cr/lf and null terminated. Besides the return code, the |
465 |
* specific server response to the command request is made available |
466 |
* by the @ref lscp_client_get_result and @ref lscp_client_get_errno |
467 |
* function calls. |
468 |
* |
469 |
* @param pClient Pointer to client instance structure. |
470 |
* @param pszQuery Command request line to be sent to server, |
471 |
* must be cr/lf and null terminated. |
472 |
* |
473 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
474 |
*/ |
475 |
lscp_status_t lscp_client_query ( lscp_client_t *pClient, const char *pszQuery ) |
476 |
{ |
477 |
lscp_status_t ret; |
478 |
|
479 |
// Lock this section up. |
480 |
lscp_mutex_lock(pClient->mutex); |
481 |
|
482 |
// Just make the now guarded call. |
483 |
ret = lscp_client_call(pClient, pszQuery); |
484 |
|
485 |
// Unlock this section down. |
486 |
lscp_mutex_unlock(pClient->mutex); |
487 |
|
488 |
return ret; |
489 |
} |
490 |
|
491 |
/** |
492 |
* Get the last received result string. In case of error or warning, |
493 |
* this is the text of the error or warning message issued. |
494 |
* |
495 |
* @param pClient Pointer to client instance structure. |
496 |
* |
497 |
* @returns A pointer to the literal null-terminated result string as |
498 |
* of the last command request. |
499 |
*/ |
500 |
const char *lscp_client_get_result ( lscp_client_t *pClient ) |
501 |
{ |
502 |
if (pClient == NULL) |
503 |
return NULL; |
504 |
|
505 |
return pClient->pszResult; |
506 |
} |
507 |
|
508 |
|
509 |
/** |
510 |
* Get the last error/warning number received. |
511 |
* |
512 |
* @param pClient Pointer to client instance structure. |
513 |
* |
514 |
* @returns The numerical value of the last error or warning |
515 |
* response code received. |
516 |
*/ |
517 |
int lscp_client_get_errno ( lscp_client_t *pClient ) |
518 |
{ |
519 |
if (pClient == NULL) |
520 |
return -1; |
521 |
|
522 |
return pClient->iErrno; |
523 |
} |
524 |
|
525 |
|
526 |
//------------------------------------------------------------------------- |
527 |
// Client registration protocol functions. |
528 |
|
529 |
/** |
530 |
* Register frontend for receiving event messages: |
531 |
* SUBSCRIBE CHANNELS | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL |
532 |
* | CHANNEL_INFO | MISCELLANEOUS |
533 |
* |
534 |
* @param pClient Pointer to client instance structure. |
535 |
* @param events Bit-wise OR'ed event flags to subscribe. |
536 |
* |
537 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
538 |
*/ |
539 |
lscp_status_t lscp_client_subscribe ( lscp_client_t *pClient, lscp_event_t events ) |
540 |
{ |
541 |
lscp_status_t ret = LSCP_FAILED; |
542 |
|
543 |
if (pClient == NULL) |
544 |
return LSCP_FAILED; |
545 |
|
546 |
// Lock this section up. |
547 |
lscp_mutex_lock(pClient->mutex); |
548 |
|
549 |
// If applicable, start the alternate connection... |
550 |
if (pClient->events == LSCP_EVENT_NONE) |
551 |
ret = _lscp_client_evt_connect(pClient); |
552 |
|
553 |
// Send the subscription commands. |
554 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNELS)) |
555 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNELS); |
556 |
if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT)) |
557 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_VOICE_COUNT); |
558 |
if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT)) |
559 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_STREAM_COUNT); |
560 |
if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL)) |
561 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_BUFFER_FILL); |
562 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO)) |
563 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_CHANNEL_INFO); |
564 |
if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS)) |
565 |
ret = _lscp_client_evt_request(pClient, 1, LSCP_EVENT_MISCELLANEOUS); |
566 |
|
567 |
// Unlock this section down. |
568 |
lscp_mutex_unlock(pClient->mutex); |
569 |
|
570 |
return ret; |
571 |
} |
572 |
|
573 |
|
574 |
/** |
575 |
* Deregister frontend from receiving UDP event messages anymore: |
576 |
* SUBSCRIBE CHANNELS | VOICE_COUNT | STREAM_COUNT | BUFFER_FILL |
577 |
* | CHANNEL_INFO | MISCELLANEOUS |
578 |
* |
579 |
* @param pClient Pointer to client instance structure. |
580 |
* @param events Bit-wise OR'ed event flags to unsubscribe. |
581 |
* |
582 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
583 |
*/ |
584 |
lscp_status_t lscp_client_unsubscribe ( lscp_client_t *pClient, lscp_event_t events ) |
585 |
{ |
586 |
lscp_status_t ret = LSCP_OK; |
587 |
|
588 |
if (pClient == NULL) |
589 |
return LSCP_FAILED; |
590 |
|
591 |
// Lock this section up. |
592 |
lscp_mutex_lock(pClient->mutex); |
593 |
|
594 |
// Send the unsubscription commands. |
595 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNELS)) |
596 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNELS); |
597 |
if (ret == LSCP_OK && (events & LSCP_EVENT_VOICE_COUNT)) |
598 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_VOICE_COUNT); |
599 |
if (ret == LSCP_OK && (events & LSCP_EVENT_STREAM_COUNT)) |
600 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_STREAM_COUNT); |
601 |
if (ret == LSCP_OK && (events & LSCP_EVENT_BUFFER_FILL)) |
602 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_BUFFER_FILL); |
603 |
if (ret == LSCP_OK && (events & LSCP_EVENT_CHANNEL_INFO)) |
604 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_CHANNEL_INFO); |
605 |
if (ret == LSCP_OK && (events & LSCP_EVENT_MISCELLANEOUS)) |
606 |
ret = _lscp_client_evt_request(pClient, 0, LSCP_EVENT_MISCELLANEOUS); |
607 |
|
608 |
// If necessary, close the alternate connection... |
609 |
if (pClient->events == LSCP_EVENT_NONE) |
610 |
lscp_socket_agent_free(&(pClient->evt)); |
611 |
|
612 |
// Unlock this section down. |
613 |
lscp_mutex_unlock(pClient->mutex); |
614 |
|
615 |
return ret; |
616 |
} |
617 |
|
618 |
|
619 |
//------------------------------------------------------------------------- |
620 |
// Client command protocol functions. |
621 |
|
622 |
/** |
623 |
* Loading an instrument: |
624 |
* LOAD INSTRUMENT <filename> <instr-index> <sampler-channel> |
625 |
* |
626 |
* @param pClient Pointer to client instance structure. |
627 |
* @param pszFileName Instrument file name. |
628 |
* @param iInstrIndex Instrument index number. |
629 |
* @param iSamplerChannel Sampler Channel. |
630 |
* |
631 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
632 |
*/ |
633 |
lscp_status_t lscp_load_instrument ( lscp_client_t *pClient, const char *pszFileName, int iInstrIndex, int iSamplerChannel ) |
634 |
{ |
635 |
char szQuery[LSCP_BUFSIZ]; |
636 |
|
637 |
if (pszFileName == NULL || iSamplerChannel < 0) |
638 |
return LSCP_FAILED; |
639 |
|
640 |
sprintf(szQuery, "LOAD INSTRUMENT '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel); |
641 |
return lscp_client_query(pClient, szQuery); |
642 |
} |
643 |
|
644 |
|
645 |
/** |
646 |
* Loading an instrument in the background (non modal): |
647 |
* LOAD INSTRUMENT NON_MODAL <filename> <instr-index> <sampler-channel> |
648 |
* |
649 |
* @param pClient Pointer to client instance structure. |
650 |
* @param pszFileName Instrument file name. |
651 |
* @param iInstrIndex Instrument index number. |
652 |
* @param iSamplerChannel Sampler Channel. |
653 |
* |
654 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
655 |
*/ |
656 |
lscp_status_t lscp_load_instrument_non_modal ( lscp_client_t *pClient, const char *pszFileName, int iInstrIndex, int iSamplerChannel ) |
657 |
{ |
658 |
char szQuery[LSCP_BUFSIZ]; |
659 |
|
660 |
if (pszFileName == NULL || iSamplerChannel < 0) |
661 |
return LSCP_FAILED; |
662 |
|
663 |
sprintf(szQuery, "LOAD INSTRUMENT NON_MODAL '%s' %d %d\r\n", pszFileName, iInstrIndex, iSamplerChannel); |
664 |
return lscp_client_query(pClient, szQuery); |
665 |
} |
666 |
|
667 |
|
668 |
/** |
669 |
* Loading a sampler engine: |
670 |
* LOAD ENGINE <engine-name> <sampler-channel> |
671 |
* |
672 |
* @param pClient Pointer to client instance structure. |
673 |
* @param pszEngineName Engine name. |
674 |
* @param iSamplerChannel Sampler channel number. |
675 |
* |
676 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
677 |
*/ |
678 |
lscp_status_t lscp_load_engine ( lscp_client_t *pClient, const char *pszEngineName, int iSamplerChannel ) |
679 |
{ |
680 |
char szQuery[LSCP_BUFSIZ]; |
681 |
|
682 |
if (pszEngineName == NULL || iSamplerChannel < 0) |
683 |
return LSCP_FAILED; |
684 |
|
685 |
sprintf(szQuery, "LOAD ENGINE %s %d\r\n", pszEngineName, iSamplerChannel); |
686 |
return lscp_client_query(pClient, szQuery); |
687 |
} |
688 |
|
689 |
|
690 |
/** |
691 |
* Current number of sampler channels: |
692 |
* GET CHANNELS |
693 |
* |
694 |
* @param pClient Pointer to client instance structure. |
695 |
* |
696 |
* @returns The current total number of sampler channels on success, |
697 |
* -1 otherwise. |
698 |
*/ |
699 |
int lscp_get_channels ( lscp_client_t *pClient ) |
700 |
{ |
701 |
int iChannels = -1; |
702 |
|
703 |
// Lock this section up. |
704 |
lscp_mutex_lock(pClient->mutex); |
705 |
|
706 |
if (lscp_client_call(pClient, "GET CHANNELS\r\n") == LSCP_OK) |
707 |
iChannels = atoi(lscp_client_get_result(pClient)); |
708 |
|
709 |
// Unlock this section doen. |
710 |
lscp_mutex_unlock(pClient->mutex); |
711 |
|
712 |
return iChannels; |
713 |
} |
714 |
|
715 |
|
716 |
/** |
717 |
* List current sampler channels number identifiers: |
718 |
* LIST CHANNELS |
719 |
* |
720 |
* @param pClient Pointer to client instance structure. |
721 |
* |
722 |
* @returns An array of the sampler channels identifiers as positive integers, |
723 |
* terminated with -1 on success, NULL otherwise. |
724 |
*/ |
725 |
int *lscp_list_channels ( lscp_client_t *pClient ) |
726 |
{ |
727 |
const char *pszSeps = ","; |
728 |
|
729 |
if (pClient == NULL) |
730 |
return NULL; |
731 |
|
732 |
// Lock this section up. |
733 |
lscp_mutex_lock(pClient->mutex); |
734 |
|
735 |
if (pClient->channels) { |
736 |
lscp_isplit_destroy(pClient->channels); |
737 |
pClient->channels = NULL; |
738 |
} |
739 |
|
740 |
if (lscp_client_call(pClient, "LIST CHANNELS\r\n") == LSCP_OK) |
741 |
pClient->channels = lscp_isplit_create(lscp_client_get_result(pClient), pszSeps); |
742 |
|
743 |
// Unlock this section down. |
744 |
lscp_mutex_unlock(pClient->mutex); |
745 |
|
746 |
return pClient->channels; |
747 |
} |
748 |
|
749 |
|
750 |
/** |
751 |
* Adding a new sampler channel: |
752 |
* ADD CHANNEL |
753 |
* |
754 |
* @param pClient Pointer to client instance structure. |
755 |
* |
756 |
* @returns The new sampler channel number identifier, |
757 |
* or -1 in case of failure. |
758 |
*/ |
759 |
int lscp_add_channel ( lscp_client_t *pClient ) |
760 |
{ |
761 |
int iSamplerChannel = -1; |
762 |
|
763 |
// Lock this section up. |
764 |
lscp_mutex_lock(pClient->mutex); |
765 |
|
766 |
if (lscp_client_call(pClient, "ADD CHANNEL\r\n") == LSCP_OK) |
767 |
iSamplerChannel = atoi(lscp_client_get_result(pClient)); |
768 |
|
769 |
// Unlock this section down. |
770 |
lscp_mutex_unlock(pClient->mutex); |
771 |
|
772 |
return iSamplerChannel; |
773 |
} |
774 |
|
775 |
|
776 |
/** |
777 |
* Removing a sampler channel: |
778 |
* REMOVE CHANNEL <sampler-channel> |
779 |
* |
780 |
* @param pClient Pointer to client instance structure. |
781 |
* @param iSamplerChannel Sampler channel number. |
782 |
* |
783 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
784 |
*/ |
785 |
lscp_status_t lscp_remove_channel ( lscp_client_t *pClient, int iSamplerChannel ) |
786 |
{ |
787 |
char szQuery[LSCP_BUFSIZ]; |
788 |
|
789 |
if (iSamplerChannel < 0) |
790 |
return LSCP_FAILED; |
791 |
|
792 |
sprintf(szQuery, "REMOVE CHANNEL %d\r\n", iSamplerChannel); |
793 |
return lscp_client_query(pClient, szQuery); |
794 |
} |
795 |
|
796 |
|
797 |
/** |
798 |
* Getting all available engines: |
799 |
* GET AVAILABLE_ENGINES |
800 |
* |
801 |
* @param pClient Pointer to client instance structure. |
802 |
* |
803 |
* @returns A NULL terminated array of engine name strings, |
804 |
* or NULL in case of failure. |
805 |
*/ |
806 |
const char **lscp_get_available_engines ( lscp_client_t *pClient ) |
807 |
{ |
808 |
const char *pszSeps = ","; |
809 |
|
810 |
// Lock this section up. |
811 |
lscp_mutex_lock(pClient->mutex); |
812 |
|
813 |
if (pClient->engines) { |
814 |
lscp_szsplit_destroy(pClient->engines); |
815 |
pClient->engines = NULL; |
816 |
} |
817 |
|
818 |
if (lscp_client_call(pClient, "GET AVAILABLE_ENGINES\r\n") == LSCP_OK) |
819 |
pClient->engines = lscp_szsplit_create(lscp_client_get_result(pClient), pszSeps); |
820 |
|
821 |
// Unlock this section down. |
822 |
lscp_mutex_unlock(pClient->mutex); |
823 |
|
824 |
return (const char **) pClient->engines; |
825 |
} |
826 |
|
827 |
|
828 |
/** |
829 |
* Getting information about an engine. |
830 |
* GET ENGINE INFO <engine-name> |
831 |
* |
832 |
* @param pClient Pointer to client instance structure. |
833 |
* @param pszEngineName Engine name. |
834 |
* |
835 |
* @returns A pointer to a @ref lscp_engine_info_t structure, with all the |
836 |
* information of the given sampler engine, or NULL in case of failure. |
837 |
*/ |
838 |
lscp_engine_info_t *lscp_get_engine_info ( lscp_client_t *pClient, const char *pszEngineName ) |
839 |
{ |
840 |
lscp_engine_info_t *pEngineInfo; |
841 |
char szQuery[LSCP_BUFSIZ]; |
842 |
const char *pszResult; |
843 |
const char *pszSeps = ":"; |
844 |
const char *pszCrlf = "\r\n"; |
845 |
char *pszToken; |
846 |
char *pch; |
847 |
|
848 |
if (pszEngineName == NULL) |
849 |
return NULL; |
850 |
|
851 |
// Lock this section up. |
852 |
lscp_mutex_lock(pClient->mutex); |
853 |
|
854 |
pEngineInfo = &(pClient->engine_info); |
855 |
lscp_engine_info_reset(pEngineInfo); |
856 |
|
857 |
sprintf(szQuery, "GET ENGINE INFO %s\r\n", pszEngineName); |
858 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) { |
859 |
pszResult = lscp_client_get_result(pClient); |
860 |
pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch)); |
861 |
while (pszToken) { |
862 |
if (strcasecmp(pszToken, "DESCRIPTION") == 0) { |
863 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
864 |
if (pszToken) |
865 |
pEngineInfo->description = lscp_unquote(&pszToken, 1); |
866 |
} |
867 |
else if (strcasecmp(pszToken, "VERSION") == 0) { |
868 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
869 |
if (pszToken) |
870 |
pEngineInfo->version = lscp_unquote(&pszToken, 1); |
871 |
} |
872 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
873 |
} |
874 |
} |
875 |
else pEngineInfo = NULL; |
876 |
|
877 |
// Unlock this section down. |
878 |
lscp_mutex_unlock(pClient->mutex); |
879 |
|
880 |
return pEngineInfo; |
881 |
} |
882 |
|
883 |
|
884 |
/** |
885 |
* Getting sampler channel informations: |
886 |
* GET CHANNEL INFO <sampler-channel> |
887 |
* |
888 |
* @param pClient Pointer to client instance structure. |
889 |
* @param iSamplerChannel Sampler channel number. |
890 |
* |
891 |
* @returns A pointer to a @ref lscp_channel_info_t structure, with all the |
892 |
* information of the given sampler channel, or NULL in case of failure. |
893 |
*/ |
894 |
lscp_channel_info_t *lscp_get_channel_info ( lscp_client_t *pClient, int iSamplerChannel ) |
895 |
{ |
896 |
lscp_channel_info_t *pChannelInfo; |
897 |
char szQuery[LSCP_BUFSIZ]; |
898 |
const char *pszResult; |
899 |
const char *pszSeps = ":"; |
900 |
const char *pszCrlf = "\r\n"; |
901 |
char *pszToken; |
902 |
char *pch; |
903 |
|
904 |
if (iSamplerChannel < 0) |
905 |
return NULL; |
906 |
|
907 |
// Lock this section up. |
908 |
lscp_mutex_lock(pClient->mutex); |
909 |
|
910 |
pChannelInfo = &(pClient->channel_info); |
911 |
lscp_channel_info_reset(pChannelInfo); |
912 |
|
913 |
sprintf(szQuery, "GET CHANNEL INFO %d\r\n", iSamplerChannel); |
914 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) { |
915 |
pszResult = lscp_client_get_result(pClient); |
916 |
pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch)); |
917 |
while (pszToken) { |
918 |
if (strcasecmp(pszToken, "ENGINE_NAME") == 0) { |
919 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
920 |
if (pszToken) |
921 |
pChannelInfo->engine_name = lscp_unquote(&pszToken, 1); |
922 |
} |
923 |
else if (strcasecmp(pszToken, "AUDIO_OUTPUT_DEVICE") == 0) { |
924 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
925 |
if (pszToken) |
926 |
pChannelInfo->audio_device = atoi(lscp_ltrim(pszToken)); |
927 |
} |
928 |
else if (strcasecmp(pszToken, "AUDIO_OUTPUT_CHANNELS") == 0) { |
929 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
930 |
if (pszToken) |
931 |
pChannelInfo->audio_channels = atoi(lscp_ltrim(pszToken)); |
932 |
} |
933 |
else if (strcasecmp(pszToken, "AUDIO_OUTPUT_ROUTING") == 0) { |
934 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
935 |
if (pszToken) |
936 |
pChannelInfo->audio_routing = lscp_szsplit_create(pszToken, ","); |
937 |
} |
938 |
else if (strcasecmp(pszToken, "INSTRUMENT_FILE") == 0) { |
939 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
940 |
if (pszToken) |
941 |
pChannelInfo->instrument_file = lscp_unquote(&pszToken, 1); |
942 |
} |
943 |
else if (strcasecmp(pszToken, "INSTRUMENT_NR") == 0) { |
944 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
945 |
if (pszToken) |
946 |
pChannelInfo->instrument_nr = atoi(lscp_ltrim(pszToken)); |
947 |
} |
948 |
else if (strcasecmp(pszToken, "INSTRUMENT_STATUS") == 0) { |
949 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
950 |
if (pszToken) |
951 |
pChannelInfo->instrument_status = atoi(lscp_ltrim(pszToken)); |
952 |
} |
953 |
else if (strcasecmp(pszToken, "MIDI_INPUT_DEVICE") == 0) { |
954 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
955 |
if (pszToken) |
956 |
pChannelInfo->midi_device = atoi(lscp_ltrim(pszToken)); |
957 |
} |
958 |
else if (strcasecmp(pszToken, "MIDI_INPUT_PORT") == 0) { |
959 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
960 |
if (pszToken) |
961 |
pChannelInfo->midi_port = atoi(lscp_ltrim(pszToken)); |
962 |
} |
963 |
else if (strcasecmp(pszToken, "MIDI_INPUT_CHANNEL") == 0) { |
964 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
965 |
if (pszToken) |
966 |
pChannelInfo->midi_channel = atoi(lscp_ltrim(pszToken)); |
967 |
} |
968 |
else if (strcasecmp(pszToken, "VOLUME") == 0) { |
969 |
pszToken = lscp_strtok(NULL, pszCrlf, &(pch)); |
970 |
if (pszToken) |
971 |
pChannelInfo->volume = (float) atof(lscp_ltrim(pszToken)); |
972 |
} |
973 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
974 |
} |
975 |
} |
976 |
else pChannelInfo = NULL; |
977 |
|
978 |
// Unlock this section up. |
979 |
lscp_mutex_unlock(pClient->mutex); |
980 |
|
981 |
return pChannelInfo; |
982 |
} |
983 |
|
984 |
|
985 |
/** |
986 |
* Current number of active voices: |
987 |
* GET CHANNEL VOICE_COUNT <sampler-channel> |
988 |
* |
989 |
* @param pClient Pointer to client instance structure. |
990 |
* @param iSamplerChannel Sampler channel number. |
991 |
* |
992 |
* @returns The number of voices currently active, -1 in case of failure. |
993 |
*/ |
994 |
int lscp_get_channel_voice_count ( lscp_client_t *pClient, int iSamplerChannel ) |
995 |
{ |
996 |
char szQuery[LSCP_BUFSIZ]; |
997 |
int iVoiceCount = -1; |
998 |
|
999 |
if (iSamplerChannel < 0) |
1000 |
return iVoiceCount; |
1001 |
|
1002 |
// Lock this section up. |
1003 |
lscp_mutex_lock(pClient->mutex); |
1004 |
|
1005 |
sprintf(szQuery, "GET CHANNEL VOICE_COUNT %d\r\n", iSamplerChannel); |
1006 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) |
1007 |
iVoiceCount = atoi(lscp_client_get_result(pClient)); |
1008 |
|
1009 |
// Unlock this section down. |
1010 |
lscp_mutex_unlock(pClient->mutex); |
1011 |
|
1012 |
return iVoiceCount; |
1013 |
} |
1014 |
|
1015 |
|
1016 |
/** |
1017 |
* Current number of active disk streams: |
1018 |
* GET CHANNEL STREAM_COUNT <sampler-channel> |
1019 |
* |
1020 |
* @returns The number of active disk streams on success, -1 otherwise. |
1021 |
*/ |
1022 |
int lscp_get_channel_stream_count ( lscp_client_t *pClient, int iSamplerChannel ) |
1023 |
{ |
1024 |
char szQuery[LSCP_BUFSIZ]; |
1025 |
int iStreamCount = -1; |
1026 |
|
1027 |
if (iSamplerChannel < 0) |
1028 |
return iStreamCount; |
1029 |
|
1030 |
// Lock this section up. |
1031 |
lscp_mutex_lock(pClient->mutex); |
1032 |
|
1033 |
sprintf(szQuery, "GET CHANNEL STREAM_COUNT %d\r\n", iSamplerChannel); |
1034 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) |
1035 |
iStreamCount = atoi(lscp_client_get_result(pClient)); |
1036 |
|
1037 |
// Unlock this section down. |
1038 |
lscp_mutex_unlock(pClient->mutex); |
1039 |
|
1040 |
return iStreamCount; |
1041 |
} |
1042 |
|
1043 |
|
1044 |
/** |
1045 |
* Current fill state of disk stream buffers: |
1046 |
* GET CHANNEL BUFFER_FILL {BYTES|PERCENTAGE} <sampler-channel> |
1047 |
* |
1048 |
* @param pClient Pointer to client instance structure. |
1049 |
* @param usage_type Usage type to be returned, either |
1050 |
* @ref LSCP_USAGE_BYTES, or |
1051 |
* @ref LSCP_USAGE_PERCENTAGE. |
1052 |
* @param iSamplerChannel Sampler channel number. |
1053 |
* |
1054 |
* @returns A pointer to a @ref lscp_buffer_fill_t structure, with the |
1055 |
* information of the current disk stream buffer fill usage, for the given |
1056 |
* sampler channel, or NULL in case of failure. |
1057 |
*/ |
1058 |
lscp_buffer_fill_t *lscp_get_channel_buffer_fill ( lscp_client_t *pClient, lscp_usage_t usage_type, int iSamplerChannel ) |
1059 |
{ |
1060 |
lscp_buffer_fill_t *pBufferFill; |
1061 |
char szQuery[LSCP_BUFSIZ]; |
1062 |
int iStreamCount; |
1063 |
const char *pszUsageType = (usage_type == LSCP_USAGE_BYTES ? "BYTES" : "PERCENTAGE"); |
1064 |
const char *pszResult; |
1065 |
const char *pszSeps = "[]%,"; |
1066 |
char *pszToken; |
1067 |
char *pch; |
1068 |
int iStream; |
1069 |
|
1070 |
// Retrieve a channel stream estimation. |
1071 |
iStreamCount = lscp_get_channel_stream_count(pClient, iSamplerChannel); |
1072 |
if (pClient->iStreamCount < 0) |
1073 |
return NULL; |
1074 |
|
1075 |
// Lock this section up. |
1076 |
lscp_mutex_lock(pClient->mutex); |
1077 |
|
1078 |
// Check if we need to reallocate the stream usage array. |
1079 |
if (pClient->iStreamCount != iStreamCount) { |
1080 |
if (pClient->buffer_fill) |
1081 |
free(pClient->buffer_fill); |
1082 |
if (iStreamCount > 0) |
1083 |
pClient->buffer_fill = (lscp_buffer_fill_t *) malloc(iStreamCount * sizeof(lscp_buffer_fill_t)); |
1084 |
else |
1085 |
pClient->buffer_fill = NULL; |
1086 |
pClient->iStreamCount = iStreamCount; |
1087 |
} |
1088 |
|
1089 |
// Get buffer fill usage... |
1090 |
pBufferFill = pClient->buffer_fill; |
1091 |
if (pBufferFill && iStreamCount > 0) { |
1092 |
iStream = 0; |
1093 |
pBufferFill = pClient->buffer_fill; |
1094 |
sprintf(szQuery, "GET CHANNEL BUFFER_FILL %s %d\r\n", pszUsageType, iSamplerChannel); |
1095 |
if (lscp_client_call(pClient, szQuery) == LSCP_OK) { |
1096 |
pszResult = lscp_client_get_result(pClient); |
1097 |
pszToken = lscp_strtok((char *) pszResult, pszSeps, &(pch)); |
1098 |
while (pszToken && iStream < pClient->iStreamCount) { |
1099 |
if (*pszToken) { |
1100 |
pBufferFill[iStream].stream_id = atol(pszToken); |
1101 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
1102 |
if (pszToken == NULL) |
1103 |
break; |
1104 |
pBufferFill[iStream].stream_usage = atol(pszToken); |
1105 |
iStream++; |
1106 |
} |
1107 |
pszToken = lscp_strtok(NULL, pszSeps, &(pch)); |
1108 |
} |
1109 |
} // Reset the usage, whatever it was before. |
1110 |
else while (iStream < pClient->iStreamCount) |
1111 |
pBufferFill[iStream++].stream_usage = 0; |
1112 |
} |
1113 |
|
1114 |
// Unlock this section down. |
1115 |
lscp_mutex_unlock(pClient->mutex); |
1116 |
|
1117 |
return pBufferFill; |
1118 |
} |
1119 |
|
1120 |
|
1121 |
/** |
1122 |
* Setting audio output type: |
1123 |
* SET CHANNEL AUDIO_OUTPUT_TYPE <sampler-channel> <audio-output-type> |
1124 |
* |
1125 |
* @param pClient Pointer to client instance structure. |
1126 |
* @param iSamplerChannel Sampler channel number. |
1127 |
* @param pszAudioDriver Audio output driver type (e.g. "ALSA" or "JACK"). |
1128 |
*/ |
1129 |
lscp_status_t lscp_set_channel_audio_type ( lscp_client_t *pClient, int iSamplerChannel, const char *pszAudioDriver ) |
1130 |
{ |
1131 |
char szQuery[LSCP_BUFSIZ]; |
1132 |
|
1133 |
if (iSamplerChannel < 0 || pszAudioDriver == NULL) |
1134 |
return LSCP_FAILED; |
1135 |
|
1136 |
sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_TYPE %d %s\r\n", iSamplerChannel, pszAudioDriver); |
1137 |
return lscp_client_query(pClient, szQuery); |
1138 |
} |
1139 |
|
1140 |
|
1141 |
/** |
1142 |
* Setting audio output device: |
1143 |
* SET CHANNEL AUDIO_OUTPUT_DEVICE <sampler-channel> <device-id> |
1144 |
* |
1145 |
* @param pClient Pointer to client instance structure. |
1146 |
* @param iSamplerChannel Sampler channel number. |
1147 |
* @param iAudioDevice Audio output device number identifier. |
1148 |
*/ |
1149 |
lscp_status_t lscp_set_channel_audio_device ( lscp_client_t *pClient, int iSamplerChannel, int iAudioDevice ) |
1150 |
{ |
1151 |
char szQuery[LSCP_BUFSIZ]; |
1152 |
|
1153 |
if (iSamplerChannel < 0 || iAudioDevice < 0) |
1154 |
return LSCP_FAILED; |
1155 |
|
1156 |
sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_DEVICE %d %d\r\n", iSamplerChannel, iAudioDevice); |
1157 |
return lscp_client_query(pClient, szQuery); |
1158 |
} |
1159 |
|
1160 |
|
1161 |
/** |
1162 |
* Setting audio output channel: |
1163 |
* SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-output-chan> <audio-input-chan> |
1164 |
* |
1165 |
* @param pClient Pointer to client instance structure. |
1166 |
* @param iSamplerChannel Sampler channel number. |
1167 |
* @param iAudioOut Audio output device channel to be routed from. |
1168 |
* @param iAudioIn Audio output device channel to be routed into. |
1169 |
* |
1170 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1171 |
*/ |
1172 |
lscp_status_t lscp_set_channel_audio_channel ( lscp_client_t *pClient, int iSamplerChannel, int iAudioOut, int iAudioIn ) |
1173 |
{ |
1174 |
char szQuery[LSCP_BUFSIZ]; |
1175 |
|
1176 |
if (iSamplerChannel < 0 || iAudioOut < 0 || iAudioIn < 0) |
1177 |
return LSCP_FAILED; |
1178 |
|
1179 |
sprintf(szQuery, "SET CHANNEL AUDIO_OUTPUT_CHANNELS %d %d %d\r\n", iSamplerChannel, iAudioOut, iAudioIn); |
1180 |
return lscp_client_query(pClient, szQuery); |
1181 |
} |
1182 |
|
1183 |
|
1184 |
/** |
1185 |
* Setting MIDI input type: |
1186 |
* SET CHANNEL MIDI_INPUT_TYPE <sampler-channel> <midi-input-type> |
1187 |
* |
1188 |
* @param pClient Pointer to client instance structure. |
1189 |
* @param iSamplerChannel Sampler channel number. |
1190 |
* @param pszMidiDriver MIDI input driver type (e.g. "ALSA"). |
1191 |
* |
1192 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1193 |
*/ |
1194 |
lscp_status_t lscp_set_channel_midi_type ( lscp_client_t *pClient, int iSamplerChannel, const char *pszMidiDriver ) |
1195 |
{ |
1196 |
char szQuery[LSCP_BUFSIZ]; |
1197 |
|
1198 |
if (iSamplerChannel < 0 || pszMidiDriver == NULL) |
1199 |
return LSCP_FAILED; |
1200 |
|
1201 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_TYPE %d %s\r\n", iSamplerChannel, pszMidiDriver); |
1202 |
return lscp_client_query(pClient, szQuery); |
1203 |
} |
1204 |
|
1205 |
|
1206 |
/** |
1207 |
* Setting MIDI input device: |
1208 |
* SET CHANNEL MIDI_INPUT_DEVICE <sampler-channel> <device-id> |
1209 |
* |
1210 |
* @param pClient Pointer to client instance structure. |
1211 |
* @param iSamplerChannel Sampler channel number. |
1212 |
* @param iMidiDevice MIDI input device number identifier. |
1213 |
*/ |
1214 |
lscp_status_t lscp_set_channel_midi_device ( lscp_client_t *pClient, int iSamplerChannel, int iMidiDevice ) |
1215 |
{ |
1216 |
char szQuery[LSCP_BUFSIZ]; |
1217 |
|
1218 |
if (iSamplerChannel < 0 || iMidiDevice < 0) |
1219 |
return LSCP_FAILED; |
1220 |
|
1221 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_DEVICE %d %d\r\n", iSamplerChannel, iMidiDevice); |
1222 |
return lscp_client_query(pClient, szQuery); |
1223 |
} |
1224 |
|
1225 |
|
1226 |
/** |
1227 |
* Setting MIDI input port: |
1228 |
* SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port> |
1229 |
* |
1230 |
* @param pClient Pointer to client instance structure. |
1231 |
* @param iSamplerChannel Sampler channel number. |
1232 |
* @param iMidiPort MIDI input driver virtual port number. |
1233 |
* |
1234 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1235 |
*/ |
1236 |
lscp_status_t lscp_set_channel_midi_port ( lscp_client_t *pClient, int iSamplerChannel, int iMidiPort ) |
1237 |
{ |
1238 |
char szQuery[LSCP_BUFSIZ]; |
1239 |
|
1240 |
if (iSamplerChannel < 0 || iMidiPort < 0) |
1241 |
return LSCP_FAILED; |
1242 |
|
1243 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_PORT %d %d\r\n", iSamplerChannel, iMidiPort); |
1244 |
return lscp_client_query(pClient, szQuery); |
1245 |
} |
1246 |
|
1247 |
|
1248 |
/** |
1249 |
* Setting MIDI input channel: |
1250 |
* SET CHANNEL MIDI_INPUT_CHANNEL <sampler-channel> <midi-input-chan> |
1251 |
* |
1252 |
* @param pClient Pointer to client instance structure. |
1253 |
* @param iSamplerChannel Sampler channel number. |
1254 |
* @param iMidiChannel MIDI channel number to listen (1-16) or |
1255 |
* zero (0) to listen on all channels. |
1256 |
* |
1257 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1258 |
*/ |
1259 |
lscp_status_t lscp_set_channel_midi_channel ( lscp_client_t *pClient, int iSamplerChannel, int iMidiChannel ) |
1260 |
{ |
1261 |
char szQuery[LSCP_BUFSIZ]; |
1262 |
|
1263 |
if (iSamplerChannel < 0 || iMidiChannel < 0 || iMidiChannel > 16) |
1264 |
return LSCP_FAILED; |
1265 |
|
1266 |
if (iMidiChannel > 0) |
1267 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d %d\r\n", iSamplerChannel, iMidiChannel); |
1268 |
else |
1269 |
sprintf(szQuery, "SET CHANNEL MIDI_INPUT_CHANNEL %d ALL\r\n", iSamplerChannel); |
1270 |
return lscp_client_query(pClient, szQuery); |
1271 |
} |
1272 |
|
1273 |
|
1274 |
/** |
1275 |
* Setting channel volume: |
1276 |
* SET CHANNEL VOLUME <sampler-channel> <volume> |
1277 |
* |
1278 |
* @param pClient Pointer to client instance structure. |
1279 |
* @param iSamplerChannel Sampler channel number. |
1280 |
* @param fVolume Sampler channel volume as a positive floating point |
1281 |
* number, where a value less than 1.0 for attenuation, |
1282 |
* and greater than 1.0 for amplification. |
1283 |
* |
1284 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1285 |
*/ |
1286 |
lscp_status_t lscp_set_channel_volume ( lscp_client_t *pClient, int iSamplerChannel, float fVolume ) |
1287 |
{ |
1288 |
char szQuery[LSCP_BUFSIZ]; |
1289 |
|
1290 |
if (iSamplerChannel < 0 || fVolume < 0.0) |
1291 |
return LSCP_FAILED; |
1292 |
|
1293 |
sprintf(szQuery, "SET CHANNEL VOLUME %d %g\r\n", iSamplerChannel, fVolume); |
1294 |
return lscp_client_query(pClient, szQuery); |
1295 |
} |
1296 |
|
1297 |
|
1298 |
/** |
1299 |
* Resetting a sampler channel: |
1300 |
* RESET CHANNEL <sampler-channel> |
1301 |
* |
1302 |
* @param pClient Pointer to client instance structure. |
1303 |
* @param iSamplerChannel Sampler channel number. |
1304 |
* |
1305 |
* @returns LSCP_OK on success, LSCP_FAILED otherwise. |
1306 |
*/ |
1307 |
lscp_status_t lscp_reset_channel ( lscp_client_t *pClient, int iSamplerChannel ) |
1308 |
{ |
1309 |
char szQuery[LSCP_BUFSIZ]; |
1310 |
|
1311 |
if (iSamplerChannel < 0) |
1312 |
return LSCP_FAILED; |
1313 |
|
1314 |
sprintf(szQuery, "RESET CHANNEL %d\r\n", iSamplerChannel); |
1315 |
return lscp_client_query(pClient, szQuery); |
1316 |
} |
1317 |
|
1318 |
|
1319 |
// end of client.c |