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authorMichal Nazarewicz <mina86@mina86.com>2009-02-28 16:11:59 +0100
committerMax Kellermann <max@duempel.org>2009-02-28 16:11:59 +0100
commitcabbf7ab4a97e5f173b5fd4deb3fab4e66538586 (patch)
treefa91ee1ecc4e9a5914f2e7908cd4640d7c4425ac /src/output
parent5ea8a0df3ff159d1c9879b4a3a4c56ff34f0e43f (diff)
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pipe: new audio output plugin which runs a command
[mk: adapted to new output plugin API]
Diffstat (limited to 'src/output')
-rw-r--r--src/output/pipe_output_plugin.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/output/pipe_output_plugin.c b/src/output/pipe_output_plugin.c
new file mode 100644
index 000000000..fedf697ae
--- /dev/null
+++ b/src/output/pipe_output_plugin.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2003-2009 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "output_api.h"
+
+#include <stdio.h>
+#include <errno.h>
+
+struct pipe_output {
+ char *cmd;
+ FILE *fh;
+};
+
+/**
+ * The quark used for GError.domain.
+ */
+static inline GQuark
+pipe_output_quark(void)
+{
+ return g_quark_from_static_string("pipe_output");
+}
+
+static void *
+pipe_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
+ const struct config_param *param,
+ GError **error)
+{
+ struct pipe_output *pd = g_new(struct pipe_output, 1);
+
+ pd->cmd = config_dup_block_string(param, "command", NULL);
+ if (pd->cmd == NULL) {
+ g_set_error(error, pipe_output_quark(), 0,
+ "No \"command\" parameter specified");
+ return NULL;
+ }
+
+ return pd;
+}
+
+static void
+pipe_output_finish(void *data)
+{
+ struct pipe_output *pd = data;
+
+ g_free(pd->cmd);
+ g_free(pd);
+}
+
+static bool
+pipe_output_open(void *data, G_GNUC_UNUSED struct audio_format *audio_format,
+ G_GNUC_UNUSED GError **error)
+{
+ struct pipe_output *pd = data;
+
+ pd->fh = popen(pd->cmd, "w");
+ if (pd->fh == NULL) {
+ g_set_error(error, pipe_output_quark(), errno,
+ "Error opening pipe \"%s\": %s",
+ pd->cmd, g_strerror(errno));
+ return false;
+ }
+
+ return true;
+}
+
+static void
+pipe_output_close(void *data)
+{
+ struct pipe_output *pd = data;
+
+ pclose(pd->fh);
+}
+
+static size_t
+pipe_output_play(void *data, const void *chunk, size_t size, GError **error)
+{
+ struct pipe_output *pd = data;
+ size_t ret;
+
+ ret = fwrite(chunk, 1, size, pd->fh);
+ if (ret == 0)
+ g_set_error(error, pipe_output_quark(), errno,
+ "Write error on pipe: %s", g_strerror(errno));
+
+ return ret;
+}
+
+const struct audio_output_plugin pipe_output_plugin = {
+ .name = "pipe",
+ .init = pipe_output_init,
+ .finish = pipe_output_finish,
+ .open = pipe_output_open,
+ .close = pipe_output_close,
+ .play = pipe_output_play,
+};