solaris: new audio output plugin for Solaris /dev/audio

1 files changed, 175 insertions, 0 deletions

diff --git a/src/output/solaris_output_plugin.c b/src/output/solaris_output_plugin.c
new file mode 100644
index 00000000..5febf0af
--- /dev/null
+++ b/src/output/solaris_output_plugin.c
@@ -0,0 +1,175 @@
+/*
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "output_api.h"
+
+#include <glib.h>
+
+#include <sys/audio.h>
+#include <sys/stropts.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "solaris_output"
+
+struct solaris_output {
+	/* configuration */
+	const char *device;
+
+	int fd;
+};
+
+/**
+ * The quark used for GError.domain.
+ */
+static inline GQuark
+solaris_output_quark(void)
+{
+	return g_quark_from_static_string("solaris_output");
+}
+
+static bool
+solaris_output_test_default_device(void)
+{
+	struct stat st;
+
+	return stat("/dev/audio", &st) == 0 && S_ISCHR(st.st_mode) &&
+		access("/dev/audio", W_OK) == 0;
+}
+
+static void *
+solaris_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
+		    const struct config_param *param,
+		    G_GNUC_UNUSED GError **error)
+{
+	struct solaris_output *so = g_new(struct solaris_output, 1);
+
+	so->device = config_get_block_string(param, "device", "/dev/audio");
+
+	return so;
+}
+
+static void
+solaris_output_finish(void *data)
+{
+	struct solaris_output *so = data;
+
+	g_free(so);
+}
+
+static bool
+solaris_output_open(void *data, struct audio_format *audio_format,
+		    GError **error)
+{
+	struct solaris_output *so = data;
+	struct audio_info info;
+	int ret, flags;
+
+	/* support only 16 bit mono/stereo for now; nothing else has
+	   been tested */
+	audio_format->bits = 16;
+
+	/* open the device in non-blocking mode */
+
+	so->fd = open(so->device, O_WRONLY|O_NONBLOCK);
+	if (so->fd < 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "Failed to open %s: %s",
+			    so->device, g_strerror(errno));
+		return false;
+	}
+
+	/* restore blocking mode */
+
+	flags = fcntl(so->fd, F_GETFL);
+	if (flags > 0 && (flags & O_NONBLOCK) != 0)
+		fcntl(so->fd, F_SETFL, flags & ~O_NONBLOCK);
+
+	/* configure the audio device */
+
+	ret = ioctl(so->fd, AUDIO_GETINFO, &info);
+	if (ret < 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "AUDIO_GETINFO failed: %s", g_strerror(errno));
+		close(so->fd);
+		return false;
+	}
+
+	info.play.sample_rate = audio_format->sample_rate;
+	info.play.channels = audio_format->channels;
+	info.play.precision = audio_format->bits;
+	info.play.encoding = AUDIO_ENCODING_LINEAR;
+
+	ret = ioctl(so->fd, AUDIO_SETINFO, &info);
+	if (ret < 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "AUDIO_SETINFO failed: %s", g_strerror(errno));
+		close(so->fd);
+		return false;
+	}
+
+	return true;
+}
+
+static void
+solaris_output_close(void *data)
+{
+	struct solaris_output *so = data;
+
+	close(so->fd);
+}
+
+static size_t
+solaris_output_play(void *data, const void *chunk, size_t size, GError **error)
+{
+	struct solaris_output *so = data;
+	ssize_t nbytes;
+
+	nbytes = write(so->fd, chunk, size);
+	if (nbytes <= 0) {
+		g_set_error(error, solaris_output_quark(), errno,
+			    "Write failed: %s", g_strerror(errno));
+		return 0;
+	}
+
+	return nbytes;
+}
+
+static void
+solaris_output_cancel(void *data)
+{
+	struct solaris_output *so = data;
+
+	ioctl(so->fd, I_FLUSH);
+}
+
+const struct audio_output_plugin solaris_output_plugin = {
+	.name = "solaris",
+	.test_default_device = solaris_output_test_default_device,
+	.init = solaris_output_init,
+	.finish = solaris_output_finish,
+	.open = solaris_output_open,
+	.close = solaris_output_close,
+	.play = solaris_output_play,
+	.cancel = solaris_output_cancel,
+};