69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*
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* dummy output driver. This file is part of Shairport.
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* Copyright (c) James Laird 2013
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* All rights reserved.
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*
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* Modifications for audio synchronisation
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* and related work, copyright (c) Mike Brady 2014
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "audio.h"
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#include "common.h"
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#include <stdio.h>
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#include <sys/time.h>
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#include <unistd.h>
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int Fs;
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long long starttime, samples_played;
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static int init(__attribute__((unused)) int argc, __attribute__((unused)) char **argv) { return 0; }
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static void deinit(void) {}
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static void start(int sample_rate, __attribute__((unused)) int sample_format) {
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Fs = sample_rate;
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starttime = 0;
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samples_played = 0;
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debug(1, "dummy audio output started at Fs=%d Hz\n", sample_rate);
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}
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static int play(__attribute__((unused)) void *buf, __attribute__((unused)) int samples) { return 0; }
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static void stop(void) { debug(1, "dummy audio stopped\n"); }
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static void help(void) { printf(" There are no options for dummy audio.\n"); }
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audio_output audio_dummy = {.name = "dummy",
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.help = &help,
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.init = &init,
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.deinit = &deinit,
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.start = &start,
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.stop = &stop,
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.flush = NULL,
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.delay = NULL,
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.play = &play,
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.volume = NULL,
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.parameters = NULL,
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.mute = NULL};
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