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// example_server.c |
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// |
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/**************************************************************************** |
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Copyright (C) 2004, rncbc aka Rui Nuno Capela. All rights reserved. |
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|
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This program is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 2 |
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of the License, or (at your option) any later version. |
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|
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This program 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 |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; 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 "server.h" |
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#include "parser.h" |
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|
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#include <time.h> |
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|
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#define SERVER_PORT 8888 |
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|
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#if defined(WIN32) |
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static WSADATA _wsaData; |
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#endif |
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|
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//////////////////////////////////////////////////////////////////////// |
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|
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lscp_status_t server_callback ( lscp_connect_t *pConnect, const char *pchBuffer, int cchBuffer, void *pvData ) |
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{ |
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lscp_status_t ret = LSCP_OK; |
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lscp_parser_t tok; |
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const char *pszResult = NULL; |
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char szTemp[256]; |
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int i; |
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static int iSamplerChannel = 0; |
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static int iAudioDevice = 0; |
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static int iMidiDevice = 0; |
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|
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if (pchBuffer == NULL) { |
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fprintf(stderr, "server_callback: addr=%s port=%d: ", |
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inet_ntoa(pConnect->client.addr.sin_addr), |
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htons(pConnect->client.addr.sin_port)); |
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switch (cchBuffer) { |
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case LSCP_CONNECT_OPEN: |
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fprintf(stderr, "New client connection.\n"); |
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break; |
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case LSCP_CONNECT_CLOSE: |
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fprintf(stderr, "Connection closed.\n"); |
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break; |
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} |
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return ret; |
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} |
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|
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lscp_socket_trace("server_callback", &(pConnect->client.addr), pchBuffer, cchBuffer); |
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|
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lscp_parser_init(&tok, pchBuffer, cchBuffer); |
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|
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if (lscp_parser_test(&tok, "GET")) { |
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if (lscp_parser_test(&tok, "CHANNEL")) { |
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if (lscp_parser_test(&tok, "INFO")) { |
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// Getting sampler channel informations: |
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// GET CHANNEL INFO <sampler-channel> |
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pszResult = "ENGINE_NAME: DummyEngine\r\n" |
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"INSTRUMENT_FILE: DummyInstrument.gig\r\n" |
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"INSTRUMENT_NR: 0\r\n" |
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"INSTRUMENT_STATUS: 100\r\n" |
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"AUDIO_OUTPUT_DEVICE: 0\r\n" |
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"AUDIO_OUTPUT_CHANNELS: 2\r\n" |
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"AUDIO_OUTPUT_ROUTING: 0,1\r\n" |
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"MIDI_INPUT_DEVICE: 0\r\n" |
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"MIDI_INPUT_PORT: 0\r\n" |
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"MIDI_INPUT_CHANNEL: ALL\r\n" |
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"VOLUME: 0.5\r\n"; |
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} |
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else if (lscp_parser_test(&tok, "VOICE_COUNT")) { |
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// Current number of active voices: |
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// GET CHANNEL VOICE_COUNT <sampler-channel> |
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sprintf(szTemp, "%d", rand() % 100); |
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pszResult = szTemp; |
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} |
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else if (lscp_parser_test(&tok, "STREAM_COUNT")) { |
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// Current number of active disk streams: |
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// GET CHANNEL STREAM_COUNT <sampler-channel> |
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pszResult = "3\r\n"; |
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} |
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else if (lscp_parser_test(&tok, "BUFFER_FILL")) { |
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if (lscp_parser_test(&tok, "BYTES")) { |
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// Current fill state of disk stream buffers: |
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// GET CHANNEL BUFFER_FILL BYTES <sampler-channel> |
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sprintf(szTemp, "[1]%d,[2]%d,[3]%d\r\n", rand(), rand(), rand()); |
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pszResult = szTemp; |
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} |
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else if (lscp_parser_test(&tok, "PERCENTAGE")) { |
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// Current fill state of disk stream buffers: |
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// GET CHANNEL BUFFER_FILL PERCENTAGE <sampler-channel> |
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sprintf(szTemp, "[1]%d%%,[2]%d%%,[3]%d%%\r\n", rand() % 100, rand() % 100, rand() % 100); |
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pszResult = szTemp; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test(&tok, "CHANNELS")) { |
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// Current number of sampler channels: |
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// GET CHANNELS |
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sprintf(szTemp, "%d", iSamplerChannel); |
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pszResult = szTemp; |
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} |
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else if (lscp_parser_test(&tok, "AVAILABLE_AUDIO_OUTPUT_DRIVERS")) { |
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// Getting all available audio output drivers. |
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// GET AVAILABLE_AUDIO_OUTPUT_DRIVERS |
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pszResult = "Alsa,Jack,CoreAudio\r\n"; |
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} |
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else if (lscp_parser_test(&tok, "AVAILABLE_MIDI_INPUT_DRIVERS")) { |
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// Getting all available MIDI input drivers. |
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// GET AVAILABLE_MIDI_INPUT_DRIVERS |
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pszResult = "Alsa,MidiShare,CoreMidi\r\n"; |
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} |
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else if (lscp_parser_test2(&tok, "AUDIO_OUTPUT_DRIVER", "INFO")) { |
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// Getting informations about a specific audio output driver. |
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// GET AUDIO_OUTPUT_DRIVER INFO <audio-output-type> |
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if (lscp_parser_test(&tok, "Alsa")) { |
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pszResult = "DESCRIPTION: 'ALSA PCM'\r\n" |
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"VERSION: '1.0'\r\n" |
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"PARAMETERS: channels,samplerate,active,card\r\n"; |
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} |
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else if (lscp_parser_test(&tok, "Jack")) { |
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pszResult = "DESCRIPTION: JACK Audio Connection Kit\r\n" |
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"VERSION: 0.98.1\r\n" |
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"PARAMETERS: channels,samplerate,active\r\n"; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test2(&tok, "MIDI_INPUT_DRIVER", "INFO")) { |
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// Getting informations about a specific MIDI input driver. |
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// GET MIDI_INPUT_DRIVER INFO <midi-input-type> |
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if (lscp_parser_test(&tok, "Alsa")) { |
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pszResult = "DESCRIPTION: ALSA Sequencer\r\n" |
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"VERSION: 1.0\r\n" |
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"PARAMETERS: ports,active\r\n"; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test2(&tok, "AUDIO_OUTPUT_DRIVER_PARAMETER", "INFO")) { |
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// Getting informations about a specific audio output driver parameter. |
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// GET AUDIO_OUTPUT_DRIVER_PARAMETER INFO <audio-output-type> <param> |
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if (lscp_parser_test2(&tok, "Alsa", "active")) { |
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pszResult = "DESCRIPTION: 'ALSA PCM device active state'\r\n" |
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"TYPE: BOOL\r\n" |
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"MANDATORY: TRUE\r\n" |
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"FIX: TRUE\r\n" |
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"MULTIPLICITY: FALSE\r\n" |
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"DEPENDS: channels,samplerate,card\r\n" |
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"DEFAULT: TRUE\r\n" |
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"RANGE_MIN: FALSE\r\n" |
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"RANGE_MAX: TRUE\r\n" |
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"POSSIBILITIES: FALSE,TRUE\r\n"; |
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} |
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else if (lscp_parser_test2(&tok, "Jack", "active")) { |
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pszResult = "DESCRIPTION: 'JACK device active state'\r\n" |
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"TYPE: BOOL\r\n" |
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"MANDATORY: TRUE\r\n" |
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"FIX: TRUE\r\n" |
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"MULTIPLICITY: FALSE\r\n" |
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"DEPENDS: channels,samplerate\r\n" |
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"DEFAULT: TRUE\r\n" |
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"RANGE_MIN: FALSE\r\n" |
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"RANGE_MAX: TRUE\r\n" |
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"POSSIBILITIES: FALSE,TRUE\r\n"; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test2(&tok, "MIDI_INPUT_DRIVER_PARAMETER", "INFO")) { |
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// Getting informations about a specific MIDI input driver parameter. |
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// GET MIDI_INPUT_DRIVER_PARAMETER INFO <midi-input-type> <param> |
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if (lscp_parser_test2(&tok, "Alsa", "active")) { |
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pszResult = "DESCRIPTION: 'ALSA Sequencer device active state'\r\n" |
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"TYPE: BOOL\r\n" |
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"MANDATORY: TRUE\r\n" |
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"FIX: TRUE\r\n" |
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"MULTIPLICITY: FALSE\r\n" |
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"DEPENDS: channels,ports\r\n" |
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"DEFAULT: TRUE\r\n" |
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"RANGE_MIN: FALSE\r\n" |
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"RANGE_MAX: TRUE\r\n" |
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"POSSIBILITIES: FALSE,TRUE\r\n"; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test2(&tok, "AUDIO_OUTPUT_DEVICE", "INFO")) { |
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// Getting informations about a specific audio output device. |
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// GET AUDIO_OUTPUT_DEVICE INFO <audio-device-id> |
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if (lscp_parser_nextint(&tok) < iAudioDevice) { |
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pszResult = "driver: Alsa\r\n" |
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"active: TRUE\r\n" |
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"channels: 2\r\n" |
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"samplerate: 44100\r\n"; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test2(&tok, "MIDI_INPUT_DEVICE", "INFO")) { |
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// Getting informations about a specific MIDI input device. |
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// GET MIDI_INPUT_DEVICE INFO <midi-device-id> |
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if (lscp_parser_nextint(&tok) < iMidiDevice) { |
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pszResult = "driver: Alsa\r\n" |
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"active: TRUE\r\n" |
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"channels: 16\r\n" |
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"ports: 1\r\n"; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test(&tok, "AVAILABLE_ENGINES")) { |
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// Getting all available engines: |
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// GET AVAILABLE_ENGINES |
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pszResult = "GigEngine,DLSEngine,AkaiEngine\r\n"; |
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} |
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else if (lscp_parser_test2(&tok, "ENGINE", "INFO")) { |
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// Getting information about an engine. |
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// GET ENGINE INFO <engine-name> |
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if (lscp_parser_test(&tok, "GigEngine")) { |
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pszResult = "DESCRIPTION: GigaSampler Engine\r\n" |
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"VERSION: 0.3\r\n"; |
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} |
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else if (lscp_parser_test(&tok, "DLSEngine")) { |
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pszResult = "DESCRIPTION: 'DLS Generic Engine'\r\n" |
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"VERSION: 0.2\r\n"; |
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} |
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else if (lscp_parser_test(&tok, "AkaiEngine")) { |
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pszResult = "DESCRIPTION: Akai Sampler Engine\r\n" |
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"VERSION: 0.1\r\n"; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test(&tok, "LIST")) { |
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if (lscp_parser_test(&tok, "CHANNELS")) { |
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// Getting all created sampler channel list. |
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// GET CHANNELS |
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if (iSamplerChannel > 0) { |
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strcpy(szTemp, "0"); |
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for (i = 1; i < iSamplerChannel && strlen(szTemp) < sizeof(szTemp) - 8; i++) |
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sprintf(szTemp + strlen(szTemp), ",%d", i); |
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strcat(szTemp, "\r\n"); |
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pszResult = szTemp; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICES")) { |
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// Getting all created audio output device list. |
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// GET AUDIO_OUTPUT_DEVICES |
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if (iAudioDevice > 0) { |
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strcpy(szTemp, "0"); |
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for (i = 1; i < iAudioDevice && strlen(szTemp) < sizeof(szTemp) - 8; i++) |
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sprintf(szTemp + strlen(szTemp), ",%d", i); |
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strcat(szTemp, "\r\n"); |
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pszResult = szTemp; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICES")) { |
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// Getting all created MID input device list. |
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// GET MIDI_INPUT_DEVICES |
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if (iMidiDevice > 0) { |
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strcpy(szTemp, "0"); |
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for (i = 1; i < iMidiDevice && strlen(szTemp) < sizeof(szTemp) - 8; i++) |
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sprintf(szTemp + strlen(szTemp), ",%d", i); |
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strcat(szTemp, "\r\n"); |
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pszResult = szTemp; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else ret = LSCP_FAILED; |
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} |
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else if (lscp_parser_test(&tok, "SET")) { |
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if (lscp_parser_test(&tok, "CHANNEL")) { |
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if (lscp_parser_test(&tok, "VOLUME")) { |
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// Setting channel volume: |
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// SET CHANNEL VOLUME <sampler-channel> <volume> |
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} |
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else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_TYPE")) { |
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// Setting audio output type: |
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// SET CHANNEL AUDIO_OUTPUT_TYPE <sampler-channel> <audio-output-type> |
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} |
292 |
else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICE")) { |
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// Setting audio output device: |
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// SET CHANNEL AUDIO_OUTPUT_DEVICE <sampler-channel> <device-id> |
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} |
296 |
else if (lscp_parser_test(&tok, "AUDIO_OUTPUT_CHANNEL")) { |
297 |
// Setting audio output channel: |
298 |
// SET CHANNEL AUDIO_OUTPUT_CHANNEL <sampler-channel> <audio-in> <audio-out> |
299 |
} |
300 |
else if (lscp_parser_test(&tok, "MIDI_INPUT_TYPE")) { |
301 |
// Setting MIDI input type: |
302 |
// SET CHANNEL MIDI_INPUT_TYPE <sampler-channel> <midi-input-type> |
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} |
304 |
else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICE")) { |
305 |
// Setting MIDI input device: |
306 |
// SET CHANNEL MIDI_INPUT_DEVICE <sampler-channel> <device-id> |
307 |
} |
308 |
else if (lscp_parser_test(&tok, "MIDI_INPUT_PORT")) { |
309 |
// Setting MIDI input port: |
310 |
// SET CHANNEL MIDI_INPUT_PORT <sampler-channel> <midi-input-port> |
311 |
} |
312 |
else if (lscp_parser_test(&tok, "MIDI_INPUT_CHANNEL")) { |
313 |
// Setting MIDI input channel: |
314 |
// SET CHANNEL MIDI_INPUT_CHANNEL <sampler-channel> <midi-input-chan> |
315 |
} |
316 |
else ret = LSCP_FAILED; |
317 |
} |
318 |
else ret = LSCP_FAILED; |
319 |
} |
320 |
else if (lscp_parser_test(&tok, "LOAD")) { |
321 |
if (lscp_parser_test(&tok, "ENGINE")) { |
322 |
// Loading a sampler engine: |
323 |
// LOAD ENGINE <engine-name> <sampler-channel> |
324 |
} |
325 |
else if (lscp_parser_test(&tok, "INSTRUMENT")) { |
326 |
// Loading an instrument: |
327 |
// LOAD INSTRUMENT [NON_MODAL] <filename> <instr-index> <sampler-channel> |
328 |
} |
329 |
else ret = LSCP_FAILED; |
330 |
} |
331 |
else if (lscp_parser_test2(&tok, "ADD", "CHANNEL")) { |
332 |
// Adding a new sampler channel: |
333 |
// ADD CHANNEL |
334 |
sprintf(szTemp, "OK[%d]", iSamplerChannel++); |
335 |
pszResult = szTemp; |
336 |
} |
337 |
else if (lscp_parser_test2(&tok, "REMOVE", "CHANNEL")) { |
338 |
// Removing a sampler channel: |
339 |
// REMOVE CHANNEL <sampler-channel> |
340 |
if (lscp_parser_nextint(&tok) > iSamplerChannel) |
341 |
ret = LSCP_FAILED; |
342 |
} |
343 |
else if (lscp_parser_test2(&tok, "RESET", "CHANNEL")) { |
344 |
// Resetting a sampler channel: |
345 |
// RESET CHANNEL <sampler-channel> |
346 |
if (lscp_parser_nextint(&tok) > iSamplerChannel) |
347 |
ret = LSCP_FAILED; |
348 |
} |
349 |
else if (lscp_parser_test(&tok, "CREATE")) { |
350 |
if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICE")) { |
351 |
// Creating an audio output device. |
352 |
// CREATE AUDIO_OUTPUT_DEVICE <audio-output-driver> [<params>] |
353 |
sprintf(szTemp, "OK[%d]", iAudioDevice++); |
354 |
pszResult = szTemp; |
355 |
} |
356 |
else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICE")) { |
357 |
// Creating an MIDI input device. |
358 |
// CREATE MIDI_INPUT_DEVICE <midi-input-driver> [<params>] |
359 |
sprintf(szTemp, "OK[%d]", iMidiDevice++); |
360 |
pszResult = szTemp; |
361 |
} |
362 |
else ret = LSCP_FAILED; |
363 |
} |
364 |
else if (lscp_parser_test(&tok, "DESTROY")) { |
365 |
if (lscp_parser_test(&tok, "AUDIO_OUTPUT_DEVICE")) { |
366 |
// Destroying an audio output device. |
367 |
// DESTROY AUDIO_OUTPUT_DEVICE <audio-device-id> |
368 |
if (lscp_parser_nextint(&tok) > iAudioDevice) |
369 |
ret = LSCP_FAILED; |
370 |
} |
371 |
else if (lscp_parser_test(&tok, "MIDI_INPUT_DEVICE")) { |
372 |
// Destroying an MIDI intput device. |
373 |
// DESTROY MIDI_INPUT_DEVICE <midi-device-id> |
374 |
if (lscp_parser_nextint(&tok) > iMidiDevice) |
375 |
ret = LSCP_FAILED; |
376 |
} |
377 |
else ret = LSCP_FAILED; |
378 |
} |
379 |
else if (lscp_parser_test(&tok, "SUBSCRIBE")) { |
380 |
// Register frontend for receiving event notification messages: |
381 |
// SUBSCRIBE <event> |
382 |
ret = lscp_server_subscribe(pConnect, lscp_event_from_text(lscp_parser_next(&tok))); |
383 |
} |
384 |
else if (lscp_parser_test(&tok, "UNSUBSCRIBE")) { |
385 |
// Deregister frontend for not receiving event notification messages anymore: |
386 |
// UNSUBSCRIBE <event> |
387 |
ret = lscp_server_unsubscribe(pConnect, lscp_event_from_text(lscp_parser_next(&tok))); |
388 |
} |
389 |
else if (lscp_parser_test(&tok, "QUIT")) { |
390 |
// Close client connection: |
391 |
// QUIT |
392 |
lscp_parser_free(&tok); |
393 |
return LSCP_FAILED; // Disconnect. |
394 |
} |
395 |
else ret = LSCP_FAILED; |
396 |
|
397 |
lscp_parser_free(&tok); |
398 |
|
399 |
if (pszResult == NULL) |
400 |
pszResult = (ret == LSCP_OK ? "OK\r\n" : "ERR:1:Failed\r\n"); |
401 |
|
402 |
fprintf(stderr, "> %s", pszResult); |
403 |
|
404 |
return lscp_server_result(pConnect, pszResult, strlen(pszResult)); |
405 |
} |
406 |
|
407 |
//////////////////////////////////////////////////////////////////////// |
408 |
|
409 |
void server_usage (void) |
410 |
{ |
411 |
printf("\n %s %s (Build: %s)\n", lscp_server_package(), lscp_server_version(), lscp_server_build()); |
412 |
|
413 |
fputs("\n Available server commands: help, exit, quit, list", stdout); |
414 |
fputs("\n (all else are broadcast verbatim to subscribers)\n\n", stdout); |
415 |
} |
416 |
|
417 |
void server_prompt (void) |
418 |
{ |
419 |
fputs("lscp_server> ", stdout); |
420 |
} |
421 |
|
422 |
int main (int argc, char *argv[] ) |
423 |
{ |
424 |
lscp_server_t *pServer; |
425 |
char szLine[200]; |
426 |
int cchLine; |
427 |
lscp_connect_t *p; |
428 |
|
429 |
#if defined(WIN32) |
430 |
if (WSAStartup(MAKEWORD(1, 1), &_wsaData) != 0) { |
431 |
fprintf(stderr, "lscp_server: WSAStartup failed.\n"); |
432 |
return -1; |
433 |
} |
434 |
#endif |
435 |
|
436 |
srand(time(NULL)); |
437 |
|
438 |
pServer = lscp_server_create(SERVER_PORT, server_callback, NULL); |
439 |
if (pServer == NULL) |
440 |
return -1; |
441 |
|
442 |
server_usage(); |
443 |
server_prompt(); |
444 |
|
445 |
while (fgets(szLine, sizeof(szLine), stdin)) { |
446 |
|
447 |
cchLine = strlen(szLine); |
448 |
while (cchLine > 0 && (szLine[cchLine - 1] == '\n' || szLine[cchLine - 1] == '\r')) |
449 |
cchLine--; |
450 |
szLine[cchLine] = '\0'; |
451 |
|
452 |
if (strcmp(szLine, "exit") == 0 || strcmp(szLine, "quit") == 0) |
453 |
break; |
454 |
else |
455 |
if (strcmp(szLine, "list") == 0) { |
456 |
for (p = pServer->connects.first; p; p = p->next) { |
457 |
printf("client: sock=%d addr=%s port=%d events=0x%04x.\n", |
458 |
p->client.sock, |
459 |
inet_ntoa(p->client.addr.sin_addr), |
460 |
ntohs(p->client.addr.sin_port), |
461 |
(int) p->events |
462 |
); |
463 |
} |
464 |
} |
465 |
else |
466 |
if (cchLine > 0 && strcmp(szLine, "help") != 0) |
467 |
lscp_server_broadcast(pServer, LSCP_EVENT_MISCELLANEOUS, szLine, strlen(szLine)); |
468 |
else |
469 |
server_usage(); |
470 |
|
471 |
server_prompt(); |
472 |
} |
473 |
|
474 |
lscp_server_destroy(pServer); |
475 |
|
476 |
#if defined(WIN32) |
477 |
WSACleanup(); |
478 |
#endif |
479 |
|
480 |
return 0; |
481 |
} |
482 |
|
483 |
// end of example_server.c |