1 files changed, 580 insertions, 0 deletions

diff --git a/src/output/shout_output_plugin.c b/src/output/shout_output_plugin.c
new file mode 100644
index 000000000..7867ae63c
--- /dev/null
+++ b/src/output/shout_output_plugin.c
@@ -0,0 +1,580 @@
+/*
+ * Copyright (C) 2003-2011 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 "config.h"
+#include "shout_output_plugin.h"
+#include "output_api.h"
+#include "encoder_plugin.h"
+#include "encoder_list.h"
+#include "mpd_error.h"
+
+#include <shout/shout.h>
+#include <glib.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "shout"
+
+#define DEFAULT_CONN_TIMEOUT  2
+
+struct shout_buffer {
+	unsigned char data[32768];
+	size_t len;
+};
+
+struct shout_data {
+	struct audio_output base;
+
+	shout_t *shout_conn;
+	shout_metadata_t *shout_meta;
+
+	struct encoder *encoder;
+
+	float quality;
+	int bitrate;
+
+	int timeout;
+
+	struct shout_buffer buf;
+};
+
+static int shout_init_count;
+
+/**
+ * The quark used for GError.domain.
+ */
+static inline GQuark
+shout_output_quark(void)
+{
+	return g_quark_from_static_string("shout_output");
+}
+
+static const struct encoder_plugin *
+shout_encoder_plugin_get(const char *name)
+{
+	if (strcmp(name, "ogg") == 0)
+		name = "vorbis";
+	else if (strcmp(name, "mp3") == 0)
+		name = "lame";
+
+	return encoder_plugin_get(name);
+}
+
+static struct shout_data *new_shout_data(void)
+{
+	struct shout_data *ret = g_new(struct shout_data, 1);
+
+	ret->shout_conn = shout_new();
+	ret->shout_meta = shout_metadata_new();
+	ret->bitrate = -1;
+	ret->quality = -2.0;
+	ret->timeout = DEFAULT_CONN_TIMEOUT;
+
+	return ret;
+}
+
+static void free_shout_data(struct shout_data *sd)
+{
+	if (sd->shout_meta)
+		shout_metadata_free(sd->shout_meta);
+	if (sd->shout_conn)
+		shout_free(sd->shout_conn);
+
+	g_free(sd);
+}
+
+#define check_block_param(name) {		  \
+		block_param = config_get_block_param(param, name);	\
+		if (!block_param) {					\
+			MPD_ERROR("no \"%s\" defined for shout device defined at line " \
+				  "%i\n", name, param->line);		\
+		}							\
+	}
+
+static struct audio_output *
+my_shout_init_driver(const struct config_param *param,
+		     GError **error)
+{
+	struct shout_data *sd;
+	char *test;
+	unsigned port;
+	char *host;
+	char *mount;
+	char *passwd;
+	const char *encoding;
+	const struct encoder_plugin *encoder_plugin;
+	unsigned shout_format;
+	unsigned protocol;
+	const char *user;
+	char *name;
+	const char *value;
+	const struct block_param *block_param;
+	int public;
+
+	sd = new_shout_data();
+
+	if (!ao_base_init(&sd->base, &shout_output_plugin, param, error)) {
+		free_shout_data(sd);
+		return NULL;
+	}
+
+	const struct audio_format *audio_format =
+		&sd->base.config_audio_format;
+	if (!audio_format_fully_defined(audio_format)) {
+		g_set_error(error, shout_output_quark(), 0,
+			    "Need full audio format specification");
+		ao_base_finish(&sd->base);
+		free_shout_data(sd);
+		return NULL;
+	}
+
+	if (shout_init_count == 0)
+		shout_init();
+
+	shout_init_count++;
+
+	check_block_param("host");
+	host = block_param->value;
+
+	check_block_param("mount");
+	mount = block_param->value;
+
+	port = config_get_block_unsigned(param, "port", 0);
+	if (port == 0) {
+		g_set_error(error, shout_output_quark(), 0,
+			    "shout port must be configured");
+		goto failure;
+	}
+
+	check_block_param("password");
+	passwd = block_param->value;
+
+	check_block_param("name");
+	name = block_param->value;
+
+	public = config_get_block_bool(param, "public", false);
+
+	user = config_get_block_string(param, "user", "source");
+
+	value = config_get_block_string(param, "quality", NULL);
+	if (value != NULL) {
+		sd->quality = strtod(value, &test);
+
+		if (*test != '\0' || sd->quality < -1.0 || sd->quality > 10.0) {
+			g_set_error(error, shout_output_quark(), 0,
+				    "shout quality \"%s\" is not a number in the "
+				    "range -1 to 10, line %i",
+				    value, param->line);
+			goto failure;
+		}
+
+		if (config_get_block_string(param, "bitrate", NULL) != NULL) {
+			g_set_error(error, shout_output_quark(), 0,
+				    "quality and bitrate are "
+				    "both defined");
+			goto failure;
+		}
+	} else {
+		value = config_get_block_string(param, "bitrate", NULL);
+		if (value == NULL) {
+			g_set_error(error, shout_output_quark(), 0,
+				    "neither bitrate nor quality defined");
+			goto failure;
+		}
+
+		sd->bitrate = strtol(value, &test, 10);
+
+		if (*test != '\0' || sd->bitrate <= 0) {
+			g_set_error(error, shout_output_quark(), 0,
+				    "bitrate must be a positive integer");
+			goto failure;
+		}
+	}
+
+	encoding = config_get_block_string(param, "encoding", "ogg");
+	encoder_plugin = shout_encoder_plugin_get(encoding);
+	if (encoder_plugin == NULL) {
+		g_set_error(error, shout_output_quark(), 0,
+			    "couldn't find shout encoder plugin \"%s\"",
+			    encoding);
+		goto failure;
+	}
+
+	sd->encoder = encoder_init(encoder_plugin, param, error);
+	if (sd->encoder == NULL)
+		goto failure;
+
+	if (strcmp(encoding, "mp3") == 0 || strcmp(encoding, "lame") == 0)
+		shout_format = SHOUT_FORMAT_MP3;
+	else
+		shout_format = SHOUT_FORMAT_OGG;
+
+	value = config_get_block_string(param, "protocol", NULL);
+	if (value != NULL) {
+		if (0 == strcmp(value, "shoutcast") &&
+		    0 != strcmp(encoding, "mp3")) {
+			g_set_error(error, shout_output_quark(), 0,
+				    "you cannot stream \"%s\" to shoutcast, use mp3",
+				    encoding);
+			goto failure;
+		} else if (0 == strcmp(value, "shoutcast"))
+			protocol = SHOUT_PROTOCOL_ICY;
+		else if (0 == strcmp(value, "icecast1"))
+			protocol = SHOUT_PROTOCOL_XAUDIOCAST;
+		else if (0 == strcmp(value, "icecast2"))
+			protocol = SHOUT_PROTOCOL_HTTP;
+		else {
+			g_set_error(error, shout_output_quark(), 0,
+				    "shout protocol \"%s\" is not \"shoutcast\" or "
+				    "\"icecast1\"or \"icecast2\"",
+				    value);
+			goto failure;
+		}
+	} else {
+		protocol = SHOUT_PROTOCOL_HTTP;
+	}
+
+	if (shout_set_host(sd->shout_conn, host) != SHOUTERR_SUCCESS ||
+	    shout_set_port(sd->shout_conn, port) != SHOUTERR_SUCCESS ||
+	    shout_set_password(sd->shout_conn, passwd) != SHOUTERR_SUCCESS ||
+	    shout_set_mount(sd->shout_conn, mount) != SHOUTERR_SUCCESS ||
+	    shout_set_name(sd->shout_conn, name) != SHOUTERR_SUCCESS ||
+	    shout_set_user(sd->shout_conn, user) != SHOUTERR_SUCCESS ||
+	    shout_set_public(sd->shout_conn, public) != SHOUTERR_SUCCESS ||
+	    shout_set_format(sd->shout_conn, shout_format)
+	    != SHOUTERR_SUCCESS ||
+	    shout_set_protocol(sd->shout_conn, protocol) != SHOUTERR_SUCCESS ||
+	    shout_set_agent(sd->shout_conn, "MPD") != SHOUTERR_SUCCESS) {
+		g_set_error(error, shout_output_quark(), 0,
+			    "%s", shout_get_error(sd->shout_conn));
+		goto failure;
+	}
+
+	/* optional paramters */
+	sd->timeout = config_get_block_unsigned(param, "timeout",
+						DEFAULT_CONN_TIMEOUT);
+
+	value = config_get_block_string(param, "genre", NULL);
+	if (value != NULL && shout_set_genre(sd->shout_conn, value)) {
+		g_set_error(error, shout_output_quark(), 0,
+			    "%s", shout_get_error(sd->shout_conn));
+		goto failure;
+	}
+
+	value = config_get_block_string(param, "description", NULL);
+	if (value != NULL && shout_set_description(sd->shout_conn, value)) {
+		g_set_error(error, shout_output_quark(), 0,
+			    "%s", shout_get_error(sd->shout_conn));
+		goto failure;
+	}
+
+	value = config_get_block_string(param, "url", NULL);
+	if (value != NULL && shout_set_url(sd->shout_conn, value)) {
+		g_set_error(error, shout_output_quark(), 0,
+			    "%s", shout_get_error(sd->shout_conn));
+		goto failure;
+	}
+
+	{
+		char temp[11];
+		memset(temp, 0, sizeof(temp));
+
+		snprintf(temp, sizeof(temp), "%u", audio_format->channels);
+		shout_set_audio_info(sd->shout_conn, SHOUT_AI_CHANNELS, temp);
+
+		snprintf(temp, sizeof(temp), "%u", audio_format->sample_rate);
+
+		shout_set_audio_info(sd->shout_conn, SHOUT_AI_SAMPLERATE, temp);
+
+		if (sd->quality >= -1.0) {
+			snprintf(temp, sizeof(temp), "%2.2f", sd->quality);
+			shout_set_audio_info(sd->shout_conn, SHOUT_AI_QUALITY,
+					     temp);
+		} else {
+			snprintf(temp, sizeof(temp), "%d", sd->bitrate);
+			shout_set_audio_info(sd->shout_conn, SHOUT_AI_BITRATE,
+					     temp);
+		}
+	}
+
+	return &sd->base;
+
+failure:
+	ao_base_finish(&sd->base);
+	free_shout_data(sd);
+	return NULL;
+}
+
+static bool
+handle_shout_error(struct shout_data *sd, int err, GError **error)
+{
+	switch (err) {
+	case SHOUTERR_SUCCESS:
+		break;
+
+	case SHOUTERR_UNCONNECTED:
+	case SHOUTERR_SOCKET:
+		g_set_error(error, shout_output_quark(), err,
+			    "Lost shout connection to %s:%i: %s",
+			    shout_get_host(sd->shout_conn),
+			    shout_get_port(sd->shout_conn),
+			    shout_get_error(sd->shout_conn));
+		return false;
+
+	default:
+		g_set_error(error, shout_output_quark(), err,
+			    "connection to %s:%i error: %s",
+			    shout_get_host(sd->shout_conn),
+			    shout_get_port(sd->shout_conn),
+			    shout_get_error(sd->shout_conn));
+		return false;
+	}
+
+	return true;
+}
+
+static bool
+write_page(struct shout_data *sd, GError **error)
+{
+	int err;
+
+	assert(sd->encoder != NULL);
+
+	sd->buf.len = encoder_read(sd->encoder,
+				   sd->buf.data, sizeof(sd->buf.data));
+	if (sd->buf.len == 0)
+		return true;
+
+	err = shout_send(sd->shout_conn, sd->buf.data, sd->buf.len);
+	if (!handle_shout_error(sd, err, error))
+		return false;
+
+	return true;
+}
+
+static void close_shout_conn(struct shout_data * sd)
+{
+	sd->buf.len = 0;
+
+	if (sd->encoder != NULL) {
+		if (encoder_end(sd->encoder, NULL))
+			write_page(sd, NULL);
+
+		encoder_close(sd->encoder);
+	}
+
+	if (shout_get_connected(sd->shout_conn) != SHOUTERR_UNCONNECTED &&
+	    shout_close(sd->shout_conn) != SHOUTERR_SUCCESS) {
+		g_warning("problem closing connection to shout server: %s\n",
+			  shout_get_error(sd->shout_conn));
+	}
+}
+
+static void
+my_shout_finish_driver(struct audio_output *ao)
+{
+	struct shout_data *sd = (struct shout_data *)ao;
+
+	encoder_finish(sd->encoder);
+
+	ao_base_finish(&sd->base);
+	free_shout_data(sd);
+
+	shout_init_count--;
+
+	if (shout_init_count == 0)
+		shout_shutdown();
+}
+
+static void
+my_shout_drop_buffered_audio(struct audio_output *ao)
+{
+	G_GNUC_UNUSED
+	struct shout_data *sd = (struct shout_data *)ao;
+
+	/* needs to be implemented for shout */
+}
+
+static void
+my_shout_close_device(struct audio_output *ao)
+{
+	struct shout_data *sd = (struct shout_data *)ao;
+
+	close_shout_conn(sd);
+}
+
+static bool
+shout_connect(struct shout_data *sd, GError **error)
+{
+	int state;
+
+	state = shout_open(sd->shout_conn);
+	switch (state) {
+	case SHOUTERR_SUCCESS:
+	case SHOUTERR_CONNECTED:
+		return true;
+
+	default:
+		g_set_error(error, shout_output_quark(), 0,
+			    "problem opening connection to shout server %s:%i: %s",
+			    shout_get_host(sd->shout_conn),
+			    shout_get_port(sd->shout_conn),
+			    shout_get_error(sd->shout_conn));
+		return false;
+	}
+}
+
+static bool
+my_shout_open_device(struct audio_output *ao, struct audio_format *audio_format,
+		     GError **error)
+{
+	struct shout_data *sd = (struct shout_data *)ao;
+	bool ret;
+
+	ret = shout_connect(sd, error);
+	if (!ret)
+		return false;
+
+	sd->buf.len = 0;
+
+	ret = encoder_open(sd->encoder, audio_format, error) &&
+		write_page(sd, error);
+	if (!ret) {
+		shout_close(sd->shout_conn);
+		return false;
+	}
+
+	return true;
+}
+
+static unsigned
+my_shout_delay(struct audio_output *ao)
+{
+	struct shout_data *sd = (struct shout_data *)ao;
+
+	int delay = shout_delay(sd->shout_conn);
+	if (delay < 0)
+		delay = 0;
+
+	return delay;
+}
+
+static size_t
+my_shout_play(struct audio_output *ao, const void *chunk, size_t size,
+	      GError **error)
+{
+	struct shout_data *sd = (struct shout_data *)ao;
+
+	return encoder_write(sd->encoder, chunk, size, error) &&
+		write_page(sd, error)
+		? size
+		: 0;
+}
+
+static bool
+my_shout_pause(struct audio_output *ao)
+{
+	static const char silence[1020];
+
+	return my_shout_play(ao, silence, sizeof(silence), NULL);
+}
+
+static void
+shout_tag_to_metadata(const struct tag *tag, char *dest, size_t size)
+{
+	char artist[size];
+	char title[size];
+
+	artist[0] = 0;
+	title[0] = 0;
+
+	for (unsigned i = 0; i < tag->num_items; i++) {
+		switch (tag->items[i]->type) {
+		case TAG_ARTIST:
+			strncpy(artist, tag->items[i]->value, size);
+			break;
+		case TAG_TITLE:
+			strncpy(title, tag->items[i]->value, size);
+			break;
+
+		default:
+			break;
+		}
+	}
+
+	snprintf(dest, size, "%s - %s", artist, title);
+}
+
+static void my_shout_set_tag(struct audio_output *ao,
+			     const struct tag *tag)
+{
+	struct shout_data *sd = (struct shout_data *)ao;
+	bool ret;
+	GError *error = NULL;
+
+	if (sd->encoder->plugin->tag != NULL) {
+		/* encoder plugin supports stream tags */
+
+		ret = encoder_pre_tag(sd->encoder, &error);
+		if (!ret) {
+			g_warning("%s", error->message);
+			g_error_free(error);
+			return;
+		}
+
+		ret = write_page(sd, NULL);
+		if (!ret)
+			return;
+
+		ret = encoder_tag(sd->encoder, tag, &error);
+		if (!ret) {
+			g_warning("%s", error->message);
+			g_error_free(error);
+		}
+	} else {
+		/* no stream tag support: fall back to icy-metadata */
+		char song[1024];
+
+		shout_tag_to_metadata(tag, song, sizeof(song));
+
+		shout_metadata_add(sd->shout_meta, "song", song);
+		if (SHOUTERR_SUCCESS != shout_set_metadata(sd->shout_conn,
+							   sd->shout_meta)) {
+			g_warning("error setting shout metadata\n");
+		}
+	}
+
+	write_page(sd, NULL);
+}
+
+const struct audio_output_plugin shout_output_plugin = {
+	.name = "shout",
+	.init = my_shout_init_driver,
+	.finish = my_shout_finish_driver,
+	.open = my_shout_open_device,
+	.delay = my_shout_delay,
+	.play = my_shout_play,
+	.pause = my_shout_pause,
+	.cancel = my_shout_drop_buffered_audio,
+	.close = my_shout_close_device,
+	.send_tag = my_shout_set_tag,
+};