Mike Brady
83c0405d03
Improve support for big-endian CPUs by adding support for explicit -endian formats, i.e. S16_LE, S16_BE, S24_LE, S24_BE, S32_LE, S32_BE. For the "disable_standby_mode" setting, change "while_active" to "auto".
91 lines
3.0 KiB
C
91 lines
3.0 KiB
C
/*
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* stdout output driver. This file is part of Shairport Sync.
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* Copyright (c) Mike Brady 2015
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*
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* Based on pipe output driver
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* Copyright (c) James Laird 2013
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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 <errno.h>
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#include <fcntl.h>
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#include <memory.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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static int fd = -1;
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static void start(__attribute__((unused)) int sample_rate,
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__attribute__((unused)) int sample_format) {
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fd = STDOUT_FILENO;
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}
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static int play(void *buf, int samples) {
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char errorstring[1024];
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int warned = 0;
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int rc = write(fd, buf, samples * 4);
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if ((rc < 0) && (warned == 0)) {
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strerror_r(errno, (char *)errorstring, 1024);
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warn("Error %d writing to stdout: \"%s\".", errno, errorstring);
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warned = 1;
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}
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return rc;
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}
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static void stop(void) {
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// don't close stdout
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}
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static int init(__attribute__((unused)) int argc, __attribute__((unused)) char **argv) {
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// set up default values first
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config.audio_backend_buffer_desired_length = 1.0;
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config.audio_backend_latency_offset = 0;
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// get settings from settings file
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// do the "general" audio options. Note, these options are in the "general" stanza!
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parse_general_audio_options();
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return 0;
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}
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static void deinit(void) {
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// don't close stdout
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}
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audio_output audio_stdout = {.name = "stdout",
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.help = NULL,
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.init = &init,
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.deinit = &deinit,
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.prepare = NULL,
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.start = &start,
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.stop = &stop,
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.is_running = NULL,
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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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