113 lines
2.6 KiB
C
113 lines
2.6 KiB
C
/*
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* Copyright (C) 2003-2010 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "output_api.h"
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#include <stdio.h>
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#include <errno.h>
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struct pipe_output {
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char *cmd;
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FILE *fh;
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};
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/**
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* The quark used for GError.domain.
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*/
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static inline GQuark
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pipe_output_quark(void)
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{
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return g_quark_from_static_string("pipe_output");
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}
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static void *
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pipe_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
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const struct config_param *param,
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GError **error)
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{
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struct pipe_output *pd = g_new(struct pipe_output, 1);
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pd->cmd = config_dup_block_string(param, "command", NULL);
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if (pd->cmd == NULL) {
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g_set_error(error, pipe_output_quark(), 0,
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"No \"command\" parameter specified");
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return NULL;
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}
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return pd;
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}
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static void
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pipe_output_finish(void *data)
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{
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struct pipe_output *pd = data;
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g_free(pd->cmd);
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g_free(pd);
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}
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static bool
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pipe_output_open(void *data, G_GNUC_UNUSED struct audio_format *audio_format,
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G_GNUC_UNUSED GError **error)
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{
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struct pipe_output *pd = data;
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pd->fh = popen(pd->cmd, "w");
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if (pd->fh == NULL) {
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g_set_error(error, pipe_output_quark(), errno,
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"Error opening pipe \"%s\": %s",
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pd->cmd, g_strerror(errno));
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return false;
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}
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return true;
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}
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static void
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pipe_output_close(void *data)
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{
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struct pipe_output *pd = data;
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pclose(pd->fh);
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}
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static size_t
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pipe_output_play(void *data, const void *chunk, size_t size, GError **error)
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{
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struct pipe_output *pd = data;
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size_t ret;
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ret = fwrite(chunk, 1, size, pd->fh);
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if (ret == 0)
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g_set_error(error, pipe_output_quark(), errno,
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"Write error on pipe: %s", g_strerror(errno));
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return ret;
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}
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const struct audio_output_plugin pipe_output_plugin = {
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.name = "pipe",
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.init = pipe_output_init,
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.finish = pipe_output_finish,
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.open = pipe_output_open,
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.close = pipe_output_close,
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.play = pipe_output_play,
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};
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