conky/src/xmms2.cc

/* -*- mode: c++; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
 * vim: ts=4 sw=4 noet ai cindent syntax=cpp
 *
 * Conky, a system monitor, based on torsmo
 *
 * Any original torsmo code is licensed under the BSD license
 *
 * All code written since the fork of torsmo is licensed under the GPL
 *
 * Please see COPYING for details
 *
 * Copyright (c) 2005-2012 Brenden Matthews, Philip Kovacs, et. al.
 *	(see AUTHORS)
 * All rights reserved.
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 */

#include "conky.h"

xmmsc_connection_t *xmms2_conn;

#define CONN_INIT	0
#define CONN_OK		1
#define CONN_NO		2

static void xmms_alloc(struct information *ptr)
{

	if (ptr->xmms2.artist == NULL) {
		ptr->xmms2.artist = (char*) malloc(text_buffer_size.get(*state));
	}

	if (ptr->xmms2.album == NULL) {
		ptr->xmms2.album = (char*) malloc(text_buffer_size.get(*state));
	}

	if (ptr->xmms2.title == NULL) {
		ptr->xmms2.title = (char*) malloc(text_buffer_size.get(*state));
	}

	if (ptr->xmms2.genre == NULL) {
		ptr->xmms2.genre = (char*) malloc(text_buffer_size.get(*state));
	}

	if (ptr->xmms2.comment == NULL) {
		ptr->xmms2.comment = (char*) malloc(text_buffer_size.get(*state));
	}

	if (ptr->xmms2.url == NULL) {
		ptr->xmms2.url = (char*) malloc(text_buffer_size.get(*state));
	}

	if (ptr->xmms2.date == NULL) {
		ptr->xmms2.date = (char*) malloc(text_buffer_size.get(*state));
	}

	ptr->xmms2.artist[0] = '\0';
	ptr->xmms2.album[0] = '\0';
	ptr->xmms2.title[0] = '\0';
	ptr->xmms2.genre[0] = '\0';
	ptr->xmms2.comment[0] = '\0';
	ptr->xmms2.url[0] = '\0';
	ptr->xmms2.date[0] = '\0';

	ptr->xmms2.tracknr = 0;
	ptr->xmms2.id = 0;
	ptr->xmms2.bitrate = 0;
	ptr->xmms2.duration = 0;
	ptr->xmms2.elapsed = 0;
	ptr->xmms2.size = 0;
	ptr->xmms2.progress = 0;
	ptr->xmms2.timesplayed = -1;
}

void free_xmms2(struct text_object *obj)
{
	(void)obj;

	free_and_zero(info.xmms2.artist);
	free_and_zero(info.xmms2.album);
	free_and_zero(info.xmms2.title);
	free_and_zero(info.xmms2.genre);
	free_and_zero(info.xmms2.comment);
	free_and_zero(info.xmms2.url);
	free_and_zero(info.xmms2.date);
	free_and_zero(info.xmms2.status);
	free_and_zero(info.xmms2.playlist);
}

void connection_lost(void *p)
{
	struct information *ptr = (struct information*) p;
	ptr->xmms2.conn_state = CONN_NO;

	fprintf(stderr,"XMMS2 connection failed. %s\n", xmmsc_get_last_error(xmms2_conn));

	xmms_alloc(ptr);
	strncpy(ptr->xmms2.status, "Disconnected", text_buffer_size.get(*state) - 1);
	ptr->xmms2.playlist[0] = '\0';
	ptr->xmms2.id = 0;
}


int handle_curent_id(xmmsv_t *value, void *p)
{
	struct information *ptr = (struct information*) p;
	xmmsv_t *val, *infos, *dict_entry;
	xmmsc_result_t *res;
	const char *errbuf;
	int current_id;

	const char *charval;
	int intval;


	if (xmmsv_get_error(value, &errbuf)) {
		fprintf(stderr,"XMMS2 server error. %s\n", errbuf);
		return TRUE;
	}

	if (xmmsv_get_int(value, &current_id) && current_id > 0) {

		res = xmmsc_medialib_get_info(xmms2_conn, current_id);
		xmmsc_result_wait(res);
		val = xmmsc_result_get_value(res);

		if (xmmsv_get_error(val, &errbuf)) {
			fprintf(stderr,"XMMS2 server error. %s\n", errbuf);
			return TRUE;
		}

		xmms_alloc(ptr);


		ptr->xmms2.id = current_id;

		infos = xmmsv_propdict_to_dict(val, NULL);

		if (xmmsv_dict_get(infos, "artist", &dict_entry) && xmmsv_get_string(dict_entry, &charval))
			strncpy(ptr->xmms2.artist, charval, text_buffer_size.get(*state) - 1);

		if (xmmsv_dict_get(infos, "title", &dict_entry) && xmmsv_get_string(dict_entry, &charval))
			strncpy(ptr->xmms2.title, charval, text_buffer_size.get(*state) - 1);

		if (xmmsv_dict_get(infos, "album", &dict_entry) && xmmsv_get_string(dict_entry, &charval))
			strncpy(ptr->xmms2.album, charval, text_buffer_size.get(*state) - 1);

		if (xmmsv_dict_get(infos, "genre", &dict_entry) && xmmsv_get_string(dict_entry, &charval))
			strncpy(ptr->xmms2.genre, charval, text_buffer_size.get(*state) - 1);

		if (xmmsv_dict_get(infos, "comment", &dict_entry) && xmmsv_get_string(dict_entry, &charval))
			strncpy(ptr->xmms2.comment, charval, text_buffer_size.get(*state) - 1);

		if (xmmsv_dict_get(infos, "url", &dict_entry) && xmmsv_get_string(dict_entry, &charval))
			strncpy(ptr->xmms2.url, charval, text_buffer_size.get(*state) - 1);

		if (xmmsv_dict_get(infos, "date", &dict_entry) && xmmsv_get_string(dict_entry, &charval))
			strncpy(ptr->xmms2.date, charval, text_buffer_size.get(*state) - 1);



		if (xmmsv_dict_get(infos, "tracknr", &dict_entry) && xmmsv_get_int(dict_entry, &intval))
			ptr->xmms2.tracknr = intval;

		if (xmmsv_dict_get(infos, "duration", &dict_entry) && xmmsv_get_int(dict_entry, &intval))
			ptr->xmms2.duration = intval;

		if (xmmsv_dict_get(infos, "bitrate", &dict_entry) && xmmsv_get_int(dict_entry, &intval))
			ptr->xmms2.bitrate = intval / 1000;

		if (xmmsv_dict_get(infos, "size", &dict_entry) && xmmsv_get_int(dict_entry, &intval))
			ptr->xmms2.size = (float) intval / 1048576;

		if (xmmsv_dict_get(infos, "timesplayed", &dict_entry) && xmmsv_get_int(dict_entry, &intval))
			ptr->xmms2.timesplayed = intval;


		xmmsv_unref(infos);
		xmmsc_result_unref(res);
	}
	return TRUE;
}

int handle_playtime(xmmsv_t *value, void *p)
{
	struct information *ptr = (struct information*) p;
	int play_time;
	const char *errbuf;

	if (xmmsv_get_error(value, &errbuf)) {
		fprintf(stderr,"XMMS2 server error. %s\n", errbuf);
		return TRUE;
	}

	if (xmmsv_get_int(value, &play_time)) {
		ptr->xmms2.elapsed = play_time;
		ptr->xmms2.progress = (float) play_time / ptr->xmms2.duration;
		ptr->xmms2.percent = (int)(ptr->xmms2.progress*100);
	}

	return TRUE;
}

int handle_playback_state_change(xmmsv_t *value, void *p)
{
	struct information *ptr = (struct information*) p;
	int pb_state = 0;
	const char *errbuf;

	if (xmmsv_get_error(value, &errbuf)) {
		fprintf(stderr,"XMMS2 server error. %s\n", errbuf);
		return TRUE;
	}

	if (ptr->xmms2.status == NULL) {
		ptr->xmms2.status = (char*) malloc(text_buffer_size.get(*state));
		ptr->xmms2.status[0] = '\0';
	}

	if (xmmsv_get_int(value, &pb_state)) {
		switch (pb_state) {
			case XMMS_PLAYBACK_STATUS_PLAY:
				strncpy(ptr->xmms2.status, "Playing", text_buffer_size.get(*state) - 1);
				break;
			case XMMS_PLAYBACK_STATUS_PAUSE:
				strncpy(ptr->xmms2.status, "Paused", text_buffer_size.get(*state) - 1);
				break;
			case XMMS_PLAYBACK_STATUS_STOP:
				strncpy(ptr->xmms2.status, "Stopped", text_buffer_size.get(*state) - 1);
				ptr->xmms2.elapsed = ptr->xmms2.progress = ptr->xmms2.percent = 0;
				break;
			default:
				strncpy(ptr->xmms2.status, "Unknown", text_buffer_size.get(*state) - 1);
		}
	}
	return TRUE;
}

int handle_playlist_loaded(xmmsv_t *value, void *p)
{
	struct information *ptr = (struct information*) p;
	const char *c, *errbuf;

	if (xmmsv_get_error(value, &errbuf)) {
		fprintf(stderr,"XMMS2 server error. %s\n", errbuf);
		return TRUE;
	}

	if (ptr->xmms2.playlist == NULL) {
		ptr->xmms2.playlist = (char*) malloc(text_buffer_size.get(*state));
		ptr->xmms2.playlist[0] = '\0';
	}

	if (xmmsv_get_string(value, &c))  {
		strncpy(ptr->xmms2.playlist, c, text_buffer_size.get(*state) - 1);
	}
	return TRUE;
}

int handle_medialib_changed(xmmsv_t *value, void *p)
{
		struct information *ptr = (struct information*) p;
		const char *errbuf;
		int current_id;

		if (xmmsv_get_error(value, &errbuf)) {
			fprintf(stderr,"XMMS2 server error. %s\n", errbuf);
			return TRUE;
		}

		if (xmmsv_get_int(value, &current_id) && current_id > 0 &&
				ptr->xmms2.id == (unsigned int)current_id) {
			return handle_curent_id(value, ptr);
		}

		return TRUE;
}

int update_xmms2(void)
{
	struct information *current_info = &info;

	/* initialize connection */
	if (current_info->xmms2.conn_state == CONN_INIT) {

		if (xmms2_conn == NULL) {
			xmms2_conn = xmmsc_init(PACKAGE_NAME);
		}

		/* did init fail? */
		if (xmms2_conn == NULL) {
			fprintf(stderr,"XMMS2 init failed. %s\n", xmmsc_get_last_error(xmms2_conn));
			return 0;
		}

		/* init ok but not connected yet.. */
		current_info->xmms2.conn_state = CONN_NO;

		/* clear all values */
		xmms_alloc(current_info);
	}

	/* connect */
	if (current_info->xmms2.conn_state == CONN_NO) {

		char *path = getenv("XMMS_PATH");

		if (!xmmsc_connect(xmms2_conn, path)) {
			fprintf(stderr,"XMMS2 connection failed. %s\n", xmmsc_get_last_error(xmms2_conn));
			current_info->xmms2.conn_state = CONN_NO;
			return 0;
		}

		/* set callbacks */
		xmmsc_disconnect_callback_set(xmms2_conn, connection_lost, current_info);
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_broadcast_playback_current_id,
				handle_curent_id, current_info);
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_signal_playback_playtime,
				handle_playtime, current_info);
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_broadcast_playback_status,
				handle_playback_state_change, current_info);
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_broadcast_playlist_loaded,
				handle_playlist_loaded, current_info);
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_broadcast_medialib_entry_changed,
				handle_medialib_changed, current_info);

		/* get playback status, current id and active playlist */
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_playback_current_id,
				handle_curent_id, current_info);
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_playback_status,
				handle_playback_state_change, current_info);
		XMMS_CALLBACK_SET(xmms2_conn, xmmsc_playlist_current_active,
				handle_playlist_loaded, current_info);

		/* everything seems to be ok */
		current_info->xmms2.conn_state = CONN_OK;
	}

	/* handle callbacks */
	if (current_info->xmms2.conn_state == CONN_OK) {

		xmmsc_io_in_handle(xmms2_conn);
		if (xmmsc_io_want_out(xmms2_conn))
			xmmsc_io_out_handle(xmms2_conn);

	}
	return 0;
}

void print_xmms2_tracknr(struct text_object *obj, char *p, int p_max_size)
{
	(void)obj;
	if (info.xmms2.tracknr != -1) {
		snprintf(p, p_max_size, "%i", info.xmms2.tracknr);
	}
}

void print_xmms2_elapsed(struct text_object *obj, char *p, int p_max_size)
{
	(void)obj;
	snprintf(p, p_max_size, "%02d:%02d", info.xmms2.elapsed / 60000,
			(info.xmms2.elapsed / 1000) % 60);
}

void print_xmms2_duration(struct text_object *obj, char *p, int p_max_size)
{
	(void)obj;
	snprintf(p, p_max_size, "%02d:%02d",
			info.xmms2.duration / 60000,
			(info.xmms2.duration / 1000) % 60);
}

double xmms2_barval(struct text_object *obj)
{
	(void)obj;

	return info.xmms2.progress;
}

void print_xmms2_smart(struct text_object *obj, char *p, int p_max_size)
{
	(void)obj;
	int artist_len = strlen(info.xmms2.artist);
	int title_len = strlen(info.xmms2.title);
	if (artist_len < 2 && title_len < 2) {
		snprintf(p, p_max_size, "%s", info.xmms2.url);
	} else if (artist_len < 1) {
		snprintf(p, p_max_size, "%s", info.xmms2.title);
	} else {
		snprintf(p, p_max_size, "%s - %s", info.xmms2.artist,
				info.xmms2.title);
	}
}

#define XMMS2_PRINT_GENERATOR(name, fmt) \
void print_xmms2_##name(struct text_object *obj, char *p, int p_max_size) \
{ \
	(void)obj; \
	snprintf(p, p_max_size, fmt, info.xmms2.name); \
}

XMMS2_PRINT_GENERATOR(artist, "%s")
XMMS2_PRINT_GENERATOR(album, "%s")
XMMS2_PRINT_GENERATOR(title, "%s")
XMMS2_PRINT_GENERATOR(genre, "%s")
XMMS2_PRINT_GENERATOR(comment, "%s")
XMMS2_PRINT_GENERATOR(url, "%s")
XMMS2_PRINT_GENERATOR(status, "%s")
XMMS2_PRINT_GENERATOR(date, "%s")
XMMS2_PRINT_GENERATOR(bitrate, "%i")
XMMS2_PRINT_GENERATOR(id, "%u")
XMMS2_PRINT_GENERATOR(size, "%2.1f")
XMMS2_PRINT_GENERATOR(playlist, "%s")
XMMS2_PRINT_GENERATOR(timesplayed, "%i")
XMMS2_PRINT_GENERATOR(percent, "%i")

#undef XMMS2_PRINT_GENERATOR

int if_xmms2_connected(struct text_object *obj)
{
	(void)obj;

	return info.xmms2.conn_state == CONN_OK;
}