From: Andre <maan@p133.(none)>
Date: Sat, 6 Jan 2007 15:05:38 +0000 (+0100)
Subject: rename afs to vss (the virtual streaming system)
X-Git-Tag: v0.2.15~104
X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=commitdiff_plain;h=dc4030458f9af07d5719cfbff0a47cd16f1847f7;ds=sidebyside

rename afs to vss (the virtual streaming system)
---

diff --git a/aac_afh.c b/aac_afh.c
index a3a24bc0..a2347065 100644
--- a/aac_afh.c
+++ b/aac_afh.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.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
@@ -24,7 +24,7 @@
 
 #include "server.cmdline.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include "afh.h"
 #include "error.h"
 #include "string.h"
diff --git a/afs.c b/afs.c
deleted file mode 100644
index 2d4184d2..00000000
--- a/afs.c
+++ /dev/null
@@ -1,546 +0,0 @@
-/*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.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, USA.
- */
-
-/** \file afs.c audio file sending functions
- *
- * This contains the audio sending part of para_server which is independent of
- * the current audio format, audio file selector and of the activated senders.
- */
-
-#include "server.h"
-#include <sys/time.h> /* gettimeofday */
-#include "server.cmdline.h"
-#include "db.h"
-#include "afh.h"
-#include "afs.h"
-#include "send.h"
-#include "error.h"
-#include "string.h"
-
-extern const char *status_item_list[];
-
-static struct timeval announce_tv;
-static struct timeval data_send_barrier;
-static struct timeval eof_barrier;
-static struct timeval autoplay_barrier;
-
-extern struct misc_meta_data *mmd;
-extern struct audio_file_selector selectors[];
-extern struct sender senders[];
-
-static FILE *audio_file = NULL;
-
-#if 1
-	void mp3_init(struct audio_format_handler *);
-#endif
-
-#ifdef HAVE_OGGVORBIS
-	void ogg_init(struct audio_format_handler *);
-#endif
-#ifdef HAVE_FAAD
-	void aac_afh_init(struct audio_format_handler *);
-#endif
-
-/**
- * the list of supported  audio formats
- */
-static struct audio_format_handler afl[] = {
-#if 1
-	{
-		.name = "mp3",
-		.init = mp3_init,
-	},
-#endif
-#ifdef HAVE_OGGVORBIS
-	{
-		.name = "ogg",
-		.init = ogg_init,
-	},
-#endif
-#ifdef HAVE_FAAD
-	{
-		.name = "aac",
-		.init = aac_afh_init,
-	},
-#endif
-	{
-		.name = NULL,
-	}
-};
-#define FOR_EACH_AUDIO_FORMAT(i) for (i = 0; afl[i].name; i++)
-
-/**
- * check if audio file sender is playing
- *
- * \return greater than zero if playing, zero otherwise.
- *
- */
-unsigned int afs_playing(void)
-{
-	return mmd->new_afs_status_flags & AFS_PLAYING;
-}
-
-/**
- * check if 'next' flag is set afs_status_flags
- *
- * \return greater than zero if set, zero if not.
- *
- */
-unsigned int afs_next(void)
-{
-	return mmd->new_afs_status_flags & AFS_NEXT;
-}
-
-/**
- * check if a reposition request is pending
- *
- * \return greater than zero if true, zero otherwise.
- *
- */
-unsigned int afs_repos(void)
-{
-	return mmd->new_afs_status_flags & AFS_REPOS;
-}
-
-/**
- * check if audio file sender is paused
- *
- * \return greater than zero if paused, zero otherwise.
- *
- */
-unsigned int afs_paused(void)
-{
-	return !(mmd->new_afs_status_flags & AFS_NEXT)
-		&& !(mmd->new_afs_status_flags & AFS_PLAYING);
-}
-
-/**
- * get the name of the given audio format
- * \param i the audio format number
- *
- * This returns a pointer to statically allocated memory so it
- * must not be freed by the caller.
- */
-const char *audio_format_name(int i)
-{
-	return i >= 0?  afl[i].name : "(none)";
-}
-
-/**
- * initialize the audio file sender
- *
- * Call the init functions of all supported audio format handlers and
- * initialize all supported senders.
- */
-void afs_init(void)
-{
-	int i;
-	char *hn = para_hostname(), *home = para_homedir();
-
-	PARA_DEBUG_LOG("supported audio formats: %s\n",
-		SUPPORTED_AUDIO_FORMATS);
-	for (i = 0; afl[i].name; i++) {
-		PARA_NOTICE_LOG("initializing %s handler\n",
-			afl[i].name);
-		afl[i].init(&afl[i]);
-	}
-	ms2tv(conf.announce_time_arg, &announce_tv);
-	PARA_INFO_LOG("announce timeval: %lums\n", tv2ms(&announce_tv));
-	for (i = 0; senders[i].name; i++) {
-		PARA_NOTICE_LOG("initializing %s sender\n", senders[i].name);
-		senders[i].init(&senders[i]);
-	}
-	free(hn);
-	free(home);
-	if (conf.autoplay_given) {
-		struct timeval now, tmp;
-		mmd->afs_status_flags |= AFS_PLAYING;
-		mmd->new_afs_status_flags |= AFS_PLAYING;
-		gettimeofday(&now, NULL);
-		ms2tv(conf.autoplay_delay_arg, &tmp);
-		tv_add(&now, &tmp, &autoplay_barrier);
-	}
-}
-
-static int get_file_info(int i)
-{
-	return  afl[i].get_file_info(audio_file, mmd->audio_file_info,
-		&mmd->chunks_total, &mmd->seconds_total);
-}
-
-/**
- * guess the audio format judging from filename
- *
- * \param name the filename
- *
- * \return This function returns -1 if it has no idea what kind of audio
- * file this might be. Otherwise the (non-negative) number of the audio format
- * is returned.
- */
-int guess_audio_format(const char *name)
-{
-	int i,j, len = strlen(name);
-
-	FOR_EACH_AUDIO_FORMAT(i) {
-		for (j = 0; afl[i].suffixes[j]; j++) {
-			const char *p = afl[i].suffixes[j];
-			int plen = strlen(p);
-			if (len < plen + 1)
-				continue;
-			if (name[len - plen - 1] != '.')
-				continue;
-			if (strcasecmp(name + len - plen, p))
-				continue;
-//			PARA_DEBUG_LOG("might be %s\n", audio_format_name(i));
-			return i;
-		}
-	}
-	return -1;
-}
-
-static int get_audio_format(int omit)
-{
-	int i;
-
-	FOR_EACH_AUDIO_FORMAT(i) {
-		if (i == omit || !afl[i].get_file_info)
-			continue;
-		rewind(audio_file);
-		if (get_file_info(i) > 0)
-			return i;
-		rewind(audio_file);
-	}
-	return -E_AUDIO_FORMAT;
-}
-
-/*
- * upddate shared mem
- */
-static int update_mmd(void)
-{
-	int i;
-	struct stat file_status;
-
-	i = guess_audio_format(mmd->filename);
-	if (i < 0 || get_file_info(i) < 0)
-		i = get_audio_format(i);
-	if (i < 0)
-		return i;
-	mmd->audio_format = i;
-	mmd->chunks_sent = 0;
-	mmd->current_chunk = 0;
-	mmd->offset = 0;
-	if (fstat(fileno(audio_file), &file_status) == -1)
-		return -E_FSTAT;
-	mmd->size = file_status.st_size;
-	mmd->mtime = file_status.st_mtime;
-	mmd->events++;
-	PARA_NOTICE_LOG("next audio file: %s\n", mmd->filename);
-	return 1;
-}
-
-static void get_song(void)
-{
-	char **sl = selectors[mmd->selector_num].get_audio_file_list(10);
-	int i;
-
-	if (!sl)
-		goto err_out;
-	for (i = 0; sl[i]; i++) {
-		struct timeval now;
-		PARA_INFO_LOG("trying %s\n", sl[i]);
-		if (strlen(sl[i]) >= _POSIX_PATH_MAX)
-			continue;
-		audio_file = fopen(sl[i], "r");
-		if (!audio_file)
-			continue;
-		strcpy(mmd->filename, sl[i]);
-		if (update_mmd() < 0) {
-			fclose(audio_file);
-			audio_file = NULL;
-			continue;
-		}
-		mmd->num_played++;
-		if (selectors[mmd->selector_num].update_audio_file)
-			selectors[mmd->selector_num].update_audio_file(sl[i]);
-		PARA_DEBUG_LOG("%s", "success\n");
-		mmd->new_afs_status_flags &= (~AFS_NEXT);
-		gettimeofday(&now, NULL);
-		tv_add(&now, &announce_tv, &data_send_barrier);
-
-		goto free;
-	}
-	PARA_ERROR_LOG("%s", "no valid files found\n");
-err_out:
-	mmd->new_afs_status_flags = AFS_NEXT;
-free:
-	if (sl) {
-		for (i = 0; sl[i]; i++)
-			free(sl[i]);
-		free(sl);
-	}
-}
-
-static int chk_barrier(const char *bname, const struct timeval *now,
-		const struct timeval *barrier, struct timeval *diff,
-		int print_log)
-{
-	long ms;
-
-	if (tv_diff(now, barrier, diff) > 0)
-		return 1;
-	ms = tv2ms(diff);
-	if (print_log && ms)
-		PARA_DEBUG_LOG("%s barrier: %lims left\n", bname, ms);
-	return -1;
-}
-
-static void afs_next_chunk_time(struct timeval *due)
-{
-	struct timeval tmp;
-
-	tv_scale(mmd->chunks_sent, &afl[mmd->audio_format].chunk_tv, &tmp);
-	tv_add(&tmp, &mmd->stream_start, due);
-}
-
-/*
- * != NULL: timeout for next chunk
- * NULL: nothing to do
- */
-static struct timeval *afs_compute_timeout(void)
-{
-	static struct timeval the_timeout;
-	struct timeval now, next_chunk;
-
-	if (afs_next() && mmd->audio_format >= 0) {
-		/* only sleep a bit, nec*/
-		the_timeout.tv_sec = 0;
-		the_timeout.tv_usec = 100;
-		return &the_timeout;
-	}
-	gettimeofday(&now, NULL);
-	if (chk_barrier("autoplay_delay", &now, &autoplay_barrier,
-			&the_timeout, 1) < 0)
-		return &the_timeout;
-	if (chk_barrier("eof", &now, &eof_barrier, &the_timeout, 1) < 0)
-		return &the_timeout;
-	if (chk_barrier("data send", &now, &data_send_barrier,
-			&the_timeout, 1) < 0)
-		return &the_timeout;
-	if (mmd->audio_format < 0 || !afs_playing() || !audio_file)
-		return NULL;
-	afs_next_chunk_time(&next_chunk);
-	if (chk_barrier(afl[mmd->audio_format].name, &now, &next_chunk,
-			&the_timeout, 0) < 0)
-		return &the_timeout;
-	/* chunk is due or bof */
-	the_timeout.tv_sec = 0;
-	the_timeout.tv_usec = 0;
-	return &the_timeout;
-}
-
-static void afs_eof(struct audio_format_handler *af)
-{
-	struct timeval now;
-	int i;
-	char *tmp;
-
-	if (!af || !audio_file) {
-		for (i = 0; senders[i].name; i++)
-			senders[i].shutdown_clients();
-		return;
-	}
-	gettimeofday(&now, NULL);
-	tv_add(&af->eof_tv, &now, &eof_barrier);
-	af->close_audio_file();
-	audio_file = NULL;
-	mmd->audio_format = -1;
-	af = NULL;
-	mmd->chunks_sent = 0;
-	mmd->offset = 0;
-	mmd->seconds_total = 0;
-	tmp  = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_AUDIO_INFO1],
-		status_item_list[SI_AUDIO_INFO2], status_item_list[SI_AUDIO_INFO3]);
-	strcpy(mmd->audio_file_info, tmp);
-	free(tmp);
-	tmp  = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_DBINFO1],
-		status_item_list[SI_DBINFO2], status_item_list[SI_DBINFO3]);
-	strcpy(mmd->selector_info, tmp);
-	free(tmp);
-	mmd->filename[0] = '\0';
-	mmd->size = 0;
-	mmd->events++;
-}
-
-/**
- * get the header and of the current audio file
- *
- * \param header_len the length of the header is stored here
- *
- * \return a pointer to a buffer containing the header, or NULL, if no audio
- * file is selected or if the current audio format does not need special header
- * treamtment.
- *
- */
-char *afs_get_header(int *header_len)
-{
-	*header_len = 0;
-	if (mmd->audio_format < 0)
-		return NULL;
-	if (!afl[mmd->audio_format].get_header_info)
-		return NULL;
-	return afl[mmd->audio_format].get_header_info(header_len);
-}
-const char *supported_audio_formats(void)
-{
-	return SUPPORTED_AUDIO_FORMATS;
-}
-
-/**
- * get the chunk time of the current audio file
- *
- * \return a pointer to a struct containing the chunk time, or NULL,
- * if currently no audio file is selected.
- */
-struct timeval *afs_chunk_time(void)
-{
-	if (mmd->audio_format < 0)
-		return NULL;
-	return &afl[mmd->audio_format].chunk_tv;
-}
-
-/**
- * compute the timeout for para_server's main select-loop
- *
- * This function gets called from para_server to determine the timeout value
- * for its main select loop.
- *
- * Before the timeout is computed, the current afs status flags are evaluated
- * and acted upon by calling appropriate functions from the lower layers.
- * Possible actions include
- *
- * 	- request a new file list from the current audio file selector
- *	- shutdown of all senders (stop/pause command)
- *	- reposition the stream (ff/jmp command)
- *
- * \return A pointer to a struct timeval containing the timeout for the next
- * chunk of data to be sent, or NULL if we're not sending right now.
- */
-struct timeval *afs_preselect(void)
-{
-	struct audio_format_handler *af = NULL;
-	int i, format;
-	struct timeval *ret;
-again:
-	format = mmd->audio_format;
-	if (format >= 0)
-		af = afl + format;
-	else
-		for (i = 0; senders[i].name; i++)
-			senders[i].shutdown_clients();
-	if (afs_next() && af) {
-		afs_eof(af);
-		return afs_compute_timeout();
-	}
-	if (afs_paused() || afs_repos()) {
-		for (i = 0; senders[i].name; i++)
-			senders[i].shutdown_clients();
-		if (af) {
-			struct timeval now;
-			gettimeofday(&now, NULL);
-			if (!afs_paused() || mmd->chunks_sent)
-				tv_add(&af->eof_tv, &now, &eof_barrier);
-			if (afs_repos())
-				tv_add(&now, &announce_tv, &data_send_barrier);
-			if (mmd->new_afs_status_flags & AFS_NOMORE)
-				mmd->new_afs_status_flags = AFS_NEXT;
-		}
-		mmd->chunks_sent = 0;
-	}
-	if (af && afs_repos() && mmd->current_chunk != mmd->repos_request)
-		af->reposition_stream(mmd->repos_request);
-	if (afs_repos()) {
-		mmd->new_afs_status_flags &= ~(AFS_REPOS);
-		mmd->current_chunk = mmd->repos_request;
-	}
-	ret = afs_compute_timeout();
-	if (!ret && !audio_file && afs_playing() &&
-			!(mmd->new_afs_status_flags & AFS_NOMORE)) {
-		PARA_DEBUG_LOG("%s", "ready and playing, but no audio file\n");
-		get_song();
-		goto again;
-	}
-	return ret;
-}
-
-/**
- * afs_send_chunk - paraslash's main sending function
- *
- * This function gets called from para_server as soon as the next chunk of
- * data should be pushed out. It first calls the read_chunk() function of
- * the current audio format handler to obtain a pointer to the data to be
- * sent out as well as its length. This information is then passed to each
- * supported sender's send() function which does the actual sending.
- *
- * Return value: Positive return value on success, zero on eof and negative
- * on errors.
- */
-
-void afs_send_chunk(void)
-{
-	int i;
-	struct audio_format_handler *af;
-	char *buf;
-	ssize_t ret;
-	struct timeval now, due;
-
-	if (mmd->audio_format < 0 || !audio_file || !afs_playing())
-		return;
-	af = &afl[mmd->audio_format];
-	gettimeofday(&now, NULL);
-	afs_next_chunk_time(&due);
-	if (tv_diff(&due, &now, NULL) > 0)
-		return;
-	if (chk_barrier("eof", &now, &eof_barrier, &due, 1) < 0)
-		return;
-	if (chk_barrier("data send", &now, &data_send_barrier,
-			&due, 1) < 0)
-		return;
-	buf = af->read_chunk(mmd->current_chunk, &ret);
-	mmd->new_afs_status_flags &= ~AFS_REPOS;
-	if (!buf) {
-		if (ret < 0)
-			mmd->new_afs_status_flags = AFS_NEXT;
-		else
-			mmd->new_afs_status_flags |= AFS_NEXT;
-		afs_eof(af);
-		return;
-	}
-	if (!mmd->chunks_sent) {
-		struct timeval tmp;
-		gettimeofday(&mmd->stream_start, NULL);
-		tv_scale(mmd->current_chunk, &af->chunk_tv, &tmp);
-		mmd->offset = tv2ms(&tmp);
-		mmd->events++;
-	}
-	for (i = 0; senders[i].name; i++)
-		senders[i].send(mmd->current_chunk, mmd->chunks_sent, buf, ret);
-	mmd->new_afs_status_flags |= AFS_PLAYING;
-	mmd->chunks_sent++;
-	mmd->current_chunk++;
-}
diff --git a/afs.h b/afs.h
deleted file mode 100644
index 3f4d1d7c..00000000
--- a/afs.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.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, USA.
- */
-
-/** \file afs.h exported functions from afs.c (para_server) */
-void afs_init(void);
-void afs_send_chunk(void);
-struct timeval *afs_preselect(void);
-const char *audio_format_name(int);
-unsigned int afs_playing(void);
-unsigned int afs_next(void);
-unsigned int afs_repos(void);
-unsigned int afs_paused(void);
-char *afs_get_header(int *header_len);
-struct timeval *afs_chunk_time(void);
-int guess_audio_format(const char *name);
-const char *supported_audio_formats(void);
-/* status flags */
-#define AFS_NOMORE 1
-#define AFS_NEXT 2
-#define AFS_REPOS 4
-#define AFS_PLAYING 8
-#define DBT_CHANGE 16
diff --git a/command.c b/command.c
index 66c658ac..ebc0a5fe 100644
--- a/command.c
+++ b/command.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.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
@@ -22,7 +22,7 @@
 #include "server.cmdline.h"
 #include "db.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include "send.h"
 #include "rc4.h"
 #include <openssl/rc4.h>
@@ -79,13 +79,13 @@ static struct server_command cmd_struct[] = {
 {
 .name = "ff",
 .handler = com_ff,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "jmp amount of time forwards or backwards "
 	"in current audio file",
 .synopsis = "ff n[-]",
 .help =
 
-"\tSet the 'R' (reposition request) bit of the afs status flags\n"
+"\tSet the 'R' (reposition request) bit of the vss status flags\n"
 "\tand enqueue a request to jump n seconds forwards or backwards\n"
 "\tin the current audio file.\n"
 "\n"
@@ -114,7 +114,7 @@ static struct server_command cmd_struct[] = {
 {
 .name = "hup",
 .handler = com_hup,
-.perms = AFS_WRITE,
+.perms = VSS_WRITE,
 .description = "force reload of config file and log file",
 .synopsis = "hup",
 .help =
@@ -127,12 +127,12 @@ static struct server_command cmd_struct[] = {
 {
 .name = "jmp",
 .handler = com_jmp,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "jmp to given position in current audio file",
 .synopsis = "jmp [n]",
 .help =
 
-"\tSet the 'R' (reposition request) bit of the afs status flags\n"
+"\tSet the 'R' (reposition request) bit of the vss status flags\n"
 "\tand enqueue a request to jump to n% of the current audio file,\n"
 "\twhere 0 <= n <= 100.\n"
 
@@ -141,12 +141,12 @@ static struct server_command cmd_struct[] = {
 {
 .name = "next",
 .handler = com_next,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "skip rest of current audio file",
 .synopsis = "next",
 .help =
 
-"\tSet the 'N' (next audio file) bit of the afs status flags. When\n"
+"\tSet the 'N' (next audio file) bit of the vss status flags. When\n"
 "\tplaying, change audio file immediately. Equivalent to stop\n"
 "\tif paused, NOP if stopped.\n"
 
@@ -156,12 +156,12 @@ static struct server_command cmd_struct[] = {
 {
 .name = "nomore",
 .handler = com_nomore,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "stop playing after current audio file",
 .synopsis = "nomore",
 .help =
 
-"Set the 'O' (no more) bit of the afs status flags. This instructs\n"
+"Set the 'O' (no more) bit of the vss status flags. This instructs\n"
 "para_server to clear the 'P' (playing) bit as soon as it encounters\n"
 "the 'N' (next audio file) bit being set.\n"
 "\n"
@@ -173,24 +173,24 @@ static struct server_command cmd_struct[] = {
 {
 .name ="pause",
 .handler = com_pause,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "pause current audio file",
 .synopsis = "pause",
 .help =
 
-"\tClear the 'P' (playing) bit of the afs status flags.\n"
+"\tClear the 'P' (playing) bit of the vss status flags.\n"
 
 },
 
 {
 .name = "play",
 .handler = com_play,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "start playing or resume playing when paused",
 .synopsis = "play",
 .help =
 
-"\tSet the 'P' (playing) bit of the afs status flags. This\n"
+"\tSet the 'P' (playing) bit of the vss status flags. This\n"
 "\tresults in starting/continuing to stream.\n"
 
 },
@@ -198,7 +198,7 @@ static struct server_command cmd_struct[] = {
 {
 .name = "sb",
 .handler = com_sb,
-.perms = AFS_READ,
+.perms = VSS_READ,
 .description = "print status bar for current audio file",
 .synopsis = "sb [n]",
 .help =
@@ -215,7 +215,7 @@ static struct server_command cmd_struct[] = {
 {
 .name = "sc",
 .handler = com_sc,
-.perms = AFS_READ,
+.perms = VSS_READ,
 .description = "print name of audio file whenever it changes",
 .synopsis = "sc [n]",
 .help =
@@ -228,7 +228,7 @@ static struct server_command cmd_struct[] = {
 {
 .name = "sender",
 .handler = com_sender,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "control paraslash internal senders",
 .synopsis = "sender [s cmd [arguments]]",
 .help =
@@ -253,7 +253,7 @@ static struct server_command cmd_struct[] = {
 {
 .name = "stat",
 .handler = com_stat,
-.perms = AFS_READ,
+.perms = VSS_READ,
 .description = "print status info for current audio file",
 .synopsis = "stat [n]",
 .help =
@@ -267,19 +267,19 @@ static struct server_command cmd_struct[] = {
 {
 .name = "stop",
 .handler = com_stop,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "stop playing",
 .synopsis = "stop",
 .help =
 
-"\tClear the 'P' (play) bit and set the 'N' bit of the afs status\n"
+"\tClear the 'P' (play) bit and set the 'N' bit of the vss status\n"
 "\tflags.\n"
 
 },
 {
 .name = "term",
 .handler = com_term,
-.perms = AFS_READ | AFS_WRITE,
+.perms = VSS_READ | VSS_WRITE,
 .description = "terminate para_server",
 .synopsis = "term",
 .help =
@@ -315,13 +315,13 @@ static void mmd_dup(struct misc_meta_data *new_mmd)
 
 /*
  * compute human readable string containing
- * afs_status for given integer value
+ * vss status for given integer value
  */
-static char *afs_status_tohuman(unsigned int flags)
+static char *vss_status_tohuman(unsigned int flags)
 {
-	if (flags & AFS_PLAYING)
+	if (flags & VSS_PLAYING)
 		return para_strdup("playing");
-	else if (flags & AFS_NEXT)
+	else if (flags & VSS_NEXT)
 		return para_strdup("stopped");
 	else
 		return para_strdup("paused");
@@ -336,8 +336,8 @@ char *cmd_perms_itohuman(unsigned int perms)
 
 	msg[0] = perms & DB_READ? 'd' : '-';
 	msg[1] = perms & DB_WRITE? 'D' : '-';
-	msg[2] = perms & AFS_READ? 'a' : '-';
-	msg[3] = perms & AFS_WRITE? 'A' : '-';
+	msg[2] = perms & VSS_READ? 'a' : '-';
+	msg[3] = perms & VSS_WRITE? 'A' : '-';
 	msg[4] = '\0';
 	return msg;
 }
@@ -345,14 +345,14 @@ char *cmd_perms_itohuman(unsigned int perms)
 /*
  * Never returns NULL.
  */
-static char *afs_get_status_flags(unsigned int flags)
+static char *vss_get_status_flags(unsigned int flags)
 {
 	char *msg = para_malloc(5 * sizeof(char));
 
-	msg[0] = (flags & AFS_PLAYING)? 'P' : '_';
-	msg[1] = (flags & AFS_NOMORE)? 'O' : '_';
-	msg[2] = (flags & AFS_NEXT)? 'N' : '_';
-	msg[3] = (flags & AFS_REPOS)? 'R' : '_';
+	msg[0] = (flags & VSS_PLAYING)? 'P' : '_';
+	msg[1] = (flags & VSS_NOMORE)? 'O' : '_';
+	msg[2] = (flags & VSS_NEXT)? 'N' : '_';
+	msg[3] = (flags & VSS_REPOS)? 'R' : '_';
 	msg[4] = '\0';
 	return msg;
 }
@@ -392,7 +392,7 @@ char *get_sb_string(struct misc_meta_data *nmmd)
 static char *get_status(struct misc_meta_data *nmmd)
 {
 	char *bar, *ret, mtime[30] = "";
-	char *status, *flags; /* afs status info */
+	char *status, *flags; /* vss status info */
 	char *ut = uptime_str();
 	long offset = (nmmd->offset + 500) / 1000;
 	struct timeval now;
@@ -403,8 +403,8 @@ static char *get_status(struct misc_meta_data *nmmd)
 		strftime(mtime, 29, "%a %b %d %Y", &mtime_tm);
 	}
 	/* report real status */
-	status = afs_status_tohuman(nmmd->afs_status_flags);
-	flags = afs_get_status_flags(nmmd->afs_status_flags);
+	status = vss_status_tohuman(nmmd->vss_status_flags);
+	flags = vss_get_status_flags(nmmd->vss_status_flags);
 	bar = para_basename(nmmd->filename);
 	gettimeofday(&now, NULL);
 	ret = make_message(
@@ -811,8 +811,8 @@ static int com_play(__a_unused int socket_fd, int argc, __a_unused char **argv)
 	if (argc != 1)
 		return -E_COMMAND_SYNTAX;
 	mmd_lock();
-	mmd->new_afs_status_flags |= AFS_PLAYING;
-	mmd->new_afs_status_flags &= ~AFS_NOMORE;
+	mmd->new_vss_status_flags |= VSS_PLAYING;
+	mmd->new_vss_status_flags &= ~VSS_NOMORE;
 	mmd_unlock();
 	return 1;
 
@@ -824,9 +824,9 @@ static int com_stop(__a_unused int socket_fd, int argc, __a_unused char **argv)
 	if (argc != 1)
 		return -E_COMMAND_SYNTAX;
 	mmd_lock();
-	mmd->new_afs_status_flags &= ~AFS_PLAYING;
-	mmd->new_afs_status_flags &= ~AFS_REPOS;
-	mmd->new_afs_status_flags |= AFS_NEXT;
+	mmd->new_vss_status_flags &= ~VSS_PLAYING;
+	mmd->new_vss_status_flags &= ~VSS_REPOS;
+	mmd->new_vss_status_flags |= VSS_NEXT;
 	mmd_unlock();
 	return 1;
 }
@@ -837,10 +837,10 @@ static int com_pause(__a_unused int socket_fd, int argc, __a_unused char **argv)
 	if (argc != 1)
 		return -E_COMMAND_SYNTAX;
 	mmd_lock();
-	if (!afs_paused())
+	if (!vss_paused())
 		mmd->events++;
-	mmd->new_afs_status_flags &= ~AFS_PLAYING;
-	mmd->new_afs_status_flags &= ~AFS_NEXT;
+	mmd->new_vss_status_flags &= ~VSS_PLAYING;
+	mmd->new_vss_status_flags &= ~VSS_NEXT;
 	mmd_unlock();
 	return 1;
 }
@@ -877,7 +877,7 @@ static int com_next(__a_unused int socket_fd, int argc, __a_unused char **argv)
 		return -E_COMMAND_SYNTAX;
 	mmd_lock();
 	mmd->events++;
-	mmd->new_afs_status_flags |= AFS_NEXT;
+	mmd->new_vss_status_flags |= VSS_NEXT;
 	mmd_unlock();
 	return 1;
 }
@@ -888,8 +888,8 @@ static int com_nomore(__a_unused int socket_fd, int argc, __a_unused char **argv
 	if (argc != 1)
 		return -E_COMMAND_SYNTAX;
 	mmd_lock();
-	if (afs_playing() || afs_paused())
-		mmd->new_afs_status_flags |= AFS_NOMORE;
+	if (vss_playing() || vss_paused())
+		mmd->new_vss_status_flags |= VSS_NOMORE;
 	mmd_unlock();
 	return 1;
 }
@@ -920,12 +920,12 @@ static int com_ff(__a_unused int socket_fd, int argc, char **argv)
 	if (promille < 0)
 		promille = 0;
 	if (promille >  1000) {
-		mmd->new_afs_status_flags |= AFS_NEXT;
+		mmd->new_vss_status_flags |= VSS_NEXT;
 		goto out;
 	}
 	mmd->repos_request = (mmd->chunks_total * promille) / 1000;
-	mmd->new_afs_status_flags |= AFS_REPOS;
-	mmd->new_afs_status_flags &= ~AFS_NEXT;
+	mmd->new_vss_status_flags |= VSS_REPOS;
+	mmd->new_vss_status_flags &= ~VSS_NEXT;
 	mmd->events++;
 	ret = 1;
 out:
@@ -953,8 +953,8 @@ static int com_jmp(__a_unused int socket_fd, int argc, char **argv)
 	mmd->repos_request = (mmd->chunks_total * i + 50)/ 100;
 	PARA_INFO_LOG("sent: %lu,  offset before jmp: %lu\n",
 		mmd->chunks_sent, mmd->offset);
-	mmd->new_afs_status_flags |= AFS_REPOS;
-	mmd->new_afs_status_flags &= ~AFS_NEXT;
+	mmd->new_vss_status_flags |= VSS_REPOS;
+	mmd->new_vss_status_flags &= ~VSS_NEXT;
 	ret = 1;
 	mmd->events++;
 out:
diff --git a/configure.ac b/configure.ac
index faa5d4ad..49770573 100644
--- a/configure.ac
+++ b/configure.ac
@@ -81,7 +81,7 @@ audiod_ldflags=""
 audiod_audio_formats=""
 
 server_cmdline_objs="server.cmdline"
-server_errlist_objs="server mp3_afh afs command net string signal random_selector
+server_errlist_objs="server mp3_afh vss command net string signal random_selector
 	time daemon stat crypt http_send db close_on_fork playlist_selector
 	ipc dccp dccp_send fd user_list"
 server_ldflags=""
diff --git a/db.c b/db.c
index 8b066726..2e4ffbda 100644
--- a/db.c
+++ b/db.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.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
@@ -21,7 +21,7 @@
 
 #include "server.cmdline.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include <dirent.h> /* readdir() */
 #include <sys/stat.h> /* stat */
 #include <sys/types.h> /* mode_t */
diff --git a/dccp_send.c b/dccp_send.c
index 273961fc..128d45b7 100644
--- a/dccp_send.c
+++ b/dccp_send.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.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
@@ -26,7 +26,7 @@
 #include "server.h"
 #include "net.h"
 #include "list.h"
-#include "afs.h"
+#include "vss.h"
 #include "send.h"
 #include "dccp.h"
 #include "error.h"
@@ -165,7 +165,7 @@ static void dccp_send(long unsigned current_chunk,
 		if (!ret)
 			continue;
 		if (!dc->header_sent && current_chunk) {
-			header_buf = afs_get_header(&header_len);
+			header_buf = vss_get_header(&header_len);
 			if (header_buf && header_len > 0) {
 				ret = dccp_write(dc->fd, header_buf, header_len);
 				if (ret != header_len) {
diff --git a/error.h b/error.h
index b94139e3..9563303f 100644
--- a/error.h
+++ b/error.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.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
@@ -63,7 +63,7 @@ enum para_subsystem {
 	SS_AACDEC,
 	SS_AAC_COMMON,
 	SS_SERVER,
-	SS_AFS,
+	SS_VSS,
 	SS_MYSQL_SELECTOR,
 	SS_IPC,
 	SS_DCCP,
@@ -300,7 +300,7 @@ extern const char **para_errlist[];
 	PARA_ERROR(OGG_REPOS, "ogg repositioning error"), \
 
 
-#define AFS_ERRORS \
+#define VSS_ERRORS \
 	PARA_ERROR(AUDIO_FORMAT, "audio format not recognized"), \
 	PARA_ERROR(FSTAT, "failed to fstat() audio file"), \
 
@@ -552,7 +552,7 @@ SS_ENUM(OGG_AFH);
 SS_ENUM(AAC_AFH);
 SS_ENUM(AAC_COMMON);
 SS_ENUM(SERVER);
-SS_ENUM(AFS);
+SS_ENUM(VSS);
 SS_ENUM(COMMAND);
 SS_ENUM(RANDOM_SELECTOR);
 SS_ENUM(PLAYLIST_SELECTOR);
diff --git a/http_send.c b/http_send.c
index f06a5ac2..6c912951 100644
--- a/http_send.c
+++ b/http_send.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.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
@@ -22,7 +22,7 @@
 #include "server.cmdline.h"
 #include "server.h"
 #include "http.h"
-#include "afs.h"
+#include "vss.h"
 #include "send.h"
 #include "list.h"
 #include "close_on_fork.h"
@@ -128,7 +128,7 @@ static void http_shutdown_clients(void)
 {
 	struct http_client *hc, *tmp;
 	list_for_each_entry_safe(hc, tmp, &clients, node)
-		http_shutdown_client(hc, "afs request");
+		http_shutdown_client(hc, "vss request");
 }
 
 static int http_send_msg(struct http_client *hc, const char *msg)
@@ -208,7 +208,7 @@ static void http_send( long unsigned current_chunk,
 			continue;
 		if (hc->status == HTTP_READY_TO_STREAM) {
 			int hlen;
-			char *hbuf = afs_get_header(&hlen);
+			char *hbuf = vss_get_header(&hlen);
 			if (hbuf && hlen > 0 && current_chunk) {
 				/* need to send header */
 				PARA_INFO_LOG("queueing header: %d\n", hlen);
@@ -360,7 +360,7 @@ static void http_pre_select(int *max_fileno, fd_set *rfds, fd_set *wfds)
 			hc->check_w = 1;
 			break;
 		case HTTP_SENT_OK_MSG:
-			if (!afs_playing())
+			if (!vss_playing())
 				break; /* wait until server starts playing */
 			para_fd_set(hc->fd, wfds, max_fileno);
 			hc->check_w = 1;
diff --git a/mp3_afh.c b/mp3_afh.c
index d38e4359..530f36ff 100644
--- a/mp3_afh.c
+++ b/mp3_afh.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2003-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2003-2007 Andre Noll <maan@systemlinux.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
@@ -30,7 +30,7 @@
 
 #include "server.cmdline.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include "afh.h"
 #include "error.h"
 #include "fd.h"
diff --git a/mysql_selector.c b/mysql_selector.c
index 7a3b0a7d..a2a5bcdd 100644
--- a/mysql_selector.c
+++ b/mysql_selector.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1999-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1999-2007 Andre Noll <maan@systemlinux.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
@@ -24,7 +24,7 @@
 /** \endcond */
 #include "server.cmdline.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include "db.h"
 #include <mysql/mysql.h>
 #include <mysql/mysql_version.h>
@@ -113,7 +113,7 @@ static struct server_command cmds[] = {
 {
 .name = "cs",
 .handler = com_cs,
-.perms = AFS_WRITE | DB_READ | DB_WRITE,
+.perms = VSS_WRITE | DB_READ | DB_WRITE,
 .description = "change stream",
 .synopsis = "cs [s]",
 .help =
@@ -124,7 +124,7 @@ static struct server_command cmds[] = {
 {
 .name = "csp",
 .handler = com_cs,
-.perms = AFS_WRITE | DB_READ,
+.perms = VSS_WRITE | DB_READ,
 .description = "change stream and play",
 .synopsis = "csp s",
 .help =
@@ -289,7 +289,7 @@ static struct server_command cmds[] = {
 {
 .name = "ns",
 .handler = com_ps,
-.perms = AFS_WRITE | DB_READ | DB_WRITE,
+.perms = VSS_WRITE | DB_READ | DB_WRITE,
 .description = "change to next stream",
 .synopsis = "ns",
 .help =
@@ -377,7 +377,7 @@ static struct server_command cmds[] = {
 {
 .name = "ps",
 .handler = com_ps,
-.perms = AFS_WRITE | DB_READ | DB_WRITE,
+.perms = VSS_WRITE | DB_READ | DB_WRITE,
 .description = "change to previous stream",
 .synopsis = "ps",
 .help =
@@ -2074,9 +2074,9 @@ static int com_cs(int fd, int argc, char *argv[])
 	}
 	if (csp) {
 		mmd_lock();
-		mmd->new_afs_status_flags |= AFS_PLAYING;
+		mmd->new_vss_status_flags |= VSS_PLAYING;
 		if (stream_change)
-			mmd->new_afs_status_flags |= AFS_NEXT;
+			mmd->new_vss_status_flags |= VSS_NEXT;
 		mmd_unlock();
 	}
 	ret = 1;
diff --git a/ogg_afh.c b/ogg_afh.c
index 5aaf53f7..14163fe6 100644
--- a/ogg_afh.c
+++ b/ogg_afh.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2004-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2004-2007 Andre Noll <maan@systemlinux.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
@@ -24,7 +24,7 @@
 
 #include "server.cmdline.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include "afh.h"
 #include "error.h"
 #include "string.h"
diff --git a/ortp_send.c b/ortp_send.c
index 4dd19d7d..b06a1b84 100644
--- a/ortp_send.c
+++ b/ortp_send.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2005-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.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
@@ -22,7 +22,7 @@
 
 #include "server.cmdline.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include "send.h"
 #include "list.h"
 #include "ortp.h"
@@ -128,7 +128,7 @@ static void ortp_init_session(struct ortp_target *ot)
 	set_multicast(s);
 }
 
-/* called by afs */
+/* called by vss */
 static void ortp_shutdown_targets(void)
 {
 	unsigned char buf[ORTP_AUDIO_HEADER_LEN];
@@ -175,7 +175,7 @@ static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
 
 	if (self->status != SENDER_ON)
 		return;
-	chunk_tv = afs_chunk_time();
+	chunk_tv = vss_chunk_time();
 	if (!chunk_tv)
 		return;
 	list_for_each_entry_safe(ot, tmp, &targets, node) {
@@ -193,7 +193,7 @@ static void ortp_send(long unsigned current_chunk, long unsigned chunks_sent,
 	}
 	if (list_empty(&targets))
 		return;
-	header_buf = afs_get_header(&header_len);
+	header_buf = vss_get_header(&header_len);
 	if (!need_extra_header(current_chunk))
 		header_len = 0;
 	sendbuf_len = ORTP_AUDIO_HEADER_LEN + header_len + len;
diff --git a/server.c b/server.c
index 6195266b..b67c7e29 100644
--- a/server.c
+++ b/server.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.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
@@ -32,7 +32,7 @@
 #include "server.cmdline.h"
 #include "db.h"
 #include "server.h"
-#include "afs.h"
+#include "vss.h"
 #include "config.h"
 #include "close_on_fork.h"
 #include "send.h"
@@ -51,7 +51,7 @@ INIT_SERVER_ERRLISTS;
 /** shut down non-authorized connections after that many seconds */
 #define ALARM_TIMEOUT 10
 
-/* these are exported to afs.c. command.c and to all selectors */
+/* these are exported to vss.c. command.c and to all selectors */
 struct misc_meta_data *mmd;
 /** the configuration of para_server
  *
@@ -182,8 +182,8 @@ static void shm_init(void)
 	mmd->active_connections = 0;
 	strcpy(mmd->filename, "(none)");
 	mmd->audio_format = -1;
-	mmd->afs_status_flags = AFS_NEXT;
-	mmd->new_afs_status_flags = AFS_NEXT;
+	mmd->vss_status_flags = VSS_NEXT;
+	mmd->new_vss_status_flags = VSS_NEXT;
 	mmd->sender_cmd_data.cmd_num = -1;
 	return;
 err_out:
@@ -362,7 +362,7 @@ static unsigned do_inits(int argc, char **argv)
 	init_selector();
 	PARA_NOTICE_LOG("%s", "initializing audio file sender\n");
 	/* audio file sender */
-	afs_init();
+	vss_init();
 	mmd->server_pid = getpid();
 	setup_signal_handling();
 	mmd_lock();
@@ -411,7 +411,7 @@ static void status_refresh(void)
 
 	if (prev_events != mmd->events)
 		goto out;
-	if (mmd->new_afs_status_flags != mmd->afs_status_flags)
+	if (mmd->new_vss_status_flags != mmd->vss_status_flags)
 		goto out;
 	if (uptime / 60 != prev_uptime / 60)
 		goto out;
@@ -419,7 +419,7 @@ static void status_refresh(void)
 out:
 	prev_uptime = uptime;
 	prev_events = mmd->events;
-	mmd->afs_status_flags = mmd->new_afs_status_flags;
+	mmd->vss_status_flags = mmd->new_vss_status_flags;
 	if (ret) {
 		PARA_DEBUG_LOG("%d events, forcing status update, af = %d\n",
 			mmd->events, mmd->audio_format);
@@ -449,7 +449,7 @@ repeat:
 	/* check socket and signal pipe in any case */
 	para_fd_set(sockfd, &rfds, &max_fileno);
 	para_fd_set(signal_pipe, &rfds, &max_fileno);
-	timeout = afs_preselect();
+	timeout = vss_preselect();
 	status_refresh();
 	for (i = 0; senders[i].name; i++) {
 		if (senders[i].status != SENDER_ON)
@@ -478,7 +478,7 @@ repeat:
 			continue;
 		senders[i].post_select(&rfds, &wfds);
 	}
-	afs_send_chunk();
+	vss_send_chunk();
 	status_refresh();
 	if (FD_ISSET(signal_pipe, &rfds)) {
 		int sig;
diff --git a/server.h b/server.h
index 8bec74fd..bd2b0500 100644
--- a/server.h
+++ b/server.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.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
@@ -82,9 +82,9 @@ struct misc_meta_data{
 /* the number of the current audio format */
 	int audio_format;
 /** the "old" status flags -- commands may only read them */
-	unsigned int afs_status_flags;
+	unsigned int vss_status_flags;
 /** the new status flags -- commands may set them **/
-	unsigned int new_afs_status_flags;
+	unsigned int new_vss_status_flags;
 /** the number of data chunks sent for the current audio file */
 	long unsigned chunks_sent;
 /** the number of chunks this audio file contains */
diff --git a/user_list.c b/user_list.c
index abd47e18..75dca081 100644
--- a/user_list.c
+++ b/user_list.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.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
@@ -70,10 +70,10 @@ static void populate_user_list(char *user_list_file)
 		u->perms = 0;
 		while (num > 0) {
 			num--;
-			if (!strcmp(tmp[num], "AFS_READ"))
-				u->perms |= AFS_READ;
-			else if (!strcmp(tmp[num], "AFS_WRITE"))
-				u->perms |= AFS_WRITE;
+			if (!strcmp(tmp[num], "VSS_READ"))
+				u->perms |= VSS_READ;
+			else if (!strcmp(tmp[num], "VSS_WRITE"))
+				u->perms |= VSS_WRITE;
 			else if (!strcmp(tmp[num], "DB_READ"))
 				u->perms |= DB_READ;
 			else if (!strcmp(tmp[num], "DB_WRITE"))
diff --git a/user_list.h b/user_list.h
index 507ea02c..1ee73521 100644
--- a/user_list.h
+++ b/user_list.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2006-2007 Andre Noll <maan@systemlinux.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
@@ -26,10 +26,10 @@
  *
  * - DB_READ: command reads from the database
  * - DB_WRITE: command changes the contents of the database
- * - AFS_READ: command reads information about the current audio stream
- * - AFS_WRITE: command changes the current audio stream
+ * - VSS_READ: command reads information about the current audio stream
+ * - VSS_WRITE: command changes the current audio stream
  */
-enum {DB_READ = 1, DB_WRITE = 2, AFS_READ = 4, AFS_WRITE = 8};
+enum {DB_READ = 1, DB_WRITE = 2, VSS_READ = 4, VSS_WRITE = 8};
 
 /**
  * data needed to authenticate the user
diff --git a/vss.c b/vss.c
new file mode 100644
index 00000000..f9e2d6c2
--- /dev/null
+++ b/vss.c
@@ -0,0 +1,546 @@
+/*
+ * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.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, USA.
+ */
+
+/** \file vss.c the virtual streaming system
+ *
+ * This contains the audio sending part of para_server which is independent of
+ * the current audio format, audio file selector and of the activated senders.
+ */
+
+#include "server.h"
+#include <sys/time.h> /* gettimeofday */
+#include "server.cmdline.h"
+#include "db.h"
+#include "afh.h"
+#include "vss.h"
+#include "send.h"
+#include "error.h"
+#include "string.h"
+
+extern const char *status_item_list[];
+
+static struct timeval announce_tv;
+static struct timeval data_send_barrier;
+static struct timeval eof_barrier;
+static struct timeval autoplay_barrier;
+
+extern struct misc_meta_data *mmd;
+extern struct audio_file_selector selectors[];
+extern struct sender senders[];
+
+static FILE *audio_file = NULL;
+
+#if 1
+	void mp3_init(struct audio_format_handler *);
+#endif
+
+#ifdef HAVE_OGGVORBIS
+	void ogg_init(struct audio_format_handler *);
+#endif
+#ifdef HAVE_FAAD
+	void aac_afh_init(struct audio_format_handler *);
+#endif
+
+/**
+ * the list of supported  audio formats
+ */
+static struct audio_format_handler afl[] = {
+#if 1
+	{
+		.name = "mp3",
+		.init = mp3_init,
+	},
+#endif
+#ifdef HAVE_OGGVORBIS
+	{
+		.name = "ogg",
+		.init = ogg_init,
+	},
+#endif
+#ifdef HAVE_FAAD
+	{
+		.name = "aac",
+		.init = aac_afh_init,
+	},
+#endif
+	{
+		.name = NULL,
+	}
+};
+#define FOR_EACH_AUDIO_FORMAT(i) for (i = 0; afl[i].name; i++)
+
+/**
+ * check if vss status flag \a P (playing) is set
+ *
+ * \return greater than zero if playing, zero otherwise.
+ *
+ */
+unsigned int vss_playing(void)
+{
+	return mmd->new_vss_status_flags & VSS_PLAYING;
+}
+
+/**
+ * check if \a N (next) status flag is set
+ *
+ * \return greater than zero if set, zero if not.
+ *
+ */
+unsigned int vss_next(void)
+{
+	return mmd->new_vss_status_flags & VSS_NEXT;
+}
+
+/**
+ * check if a reposition request is pending
+ *
+ * \return greater than zero if true, zero otherwise.
+ *
+ */
+unsigned int vss_repos(void)
+{
+	return mmd->new_vss_status_flags & VSS_REPOS;
+}
+
+/**
+ * check if the vss is currently paused
+ *
+ * \return greater than zero if paused, zero otherwise.
+ *
+ */
+unsigned int vss_paused(void)
+{
+	return !(mmd->new_vss_status_flags & VSS_NEXT)
+		&& !(mmd->new_vss_status_flags & VSS_PLAYING);
+}
+
+/**
+ * get the name of the given audio format
+ * \param i the audio format number
+ *
+ * This returns a pointer to statically allocated memory so it
+ * must not be freed by the caller.
+ */
+const char *audio_format_name(int i)
+{
+	return i >= 0?  afl[i].name : "(none)";
+}
+
+/**
+ * initialize the virtual streaming system
+ *
+ * Call the init functions of all supported audio format handlers and
+ * initialize all supported senders.
+ */
+void vss_init(void)
+{
+	int i;
+	char *hn = para_hostname(), *home = para_homedir();
+
+	PARA_DEBUG_LOG("supported audio formats: %s\n",
+		SUPPORTED_AUDIO_FORMATS);
+	for (i = 0; afl[i].name; i++) {
+		PARA_NOTICE_LOG("initializing %s handler\n",
+			afl[i].name);
+		afl[i].init(&afl[i]);
+	}
+	ms2tv(conf.announce_time_arg, &announce_tv);
+	PARA_INFO_LOG("announce timeval: %lums\n", tv2ms(&announce_tv));
+	for (i = 0; senders[i].name; i++) {
+		PARA_NOTICE_LOG("initializing %s sender\n", senders[i].name);
+		senders[i].init(&senders[i]);
+	}
+	free(hn);
+	free(home);
+	if (conf.autoplay_given) {
+		struct timeval now, tmp;
+		mmd->vss_status_flags |= VSS_PLAYING;
+		mmd->new_vss_status_flags |= VSS_PLAYING;
+		gettimeofday(&now, NULL);
+		ms2tv(conf.autoplay_delay_arg, &tmp);
+		tv_add(&now, &tmp, &autoplay_barrier);
+	}
+}
+
+static int get_file_info(int i)
+{
+	return  afl[i].get_file_info(audio_file, mmd->audio_file_info,
+		&mmd->chunks_total, &mmd->seconds_total);
+}
+
+/**
+ * guess the audio format judging from filename
+ *
+ * \param name the filename
+ *
+ * \return This function returns -1 if it has no idea what kind of audio
+ * file this might be. Otherwise the (non-negative) number of the audio format
+ * is returned.
+ */
+int guess_audio_format(const char *name)
+{
+	int i,j, len = strlen(name);
+
+	FOR_EACH_AUDIO_FORMAT(i) {
+		for (j = 0; afl[i].suffixes[j]; j++) {
+			const char *p = afl[i].suffixes[j];
+			int plen = strlen(p);
+			if (len < plen + 1)
+				continue;
+			if (name[len - plen - 1] != '.')
+				continue;
+			if (strcasecmp(name + len - plen, p))
+				continue;
+//			PARA_DEBUG_LOG("might be %s\n", audio_format_name(i));
+			return i;
+		}
+	}
+	return -1;
+}
+
+static int get_audio_format(int omit)
+{
+	int i;
+
+	FOR_EACH_AUDIO_FORMAT(i) {
+		if (i == omit || !afl[i].get_file_info)
+			continue;
+		rewind(audio_file);
+		if (get_file_info(i) > 0)
+			return i;
+		rewind(audio_file);
+	}
+	return -E_AUDIO_FORMAT;
+}
+
+/*
+ * upddate shared mem
+ */
+static int update_mmd(void)
+{
+	int i;
+	struct stat file_status;
+
+	i = guess_audio_format(mmd->filename);
+	if (i < 0 || get_file_info(i) < 0)
+		i = get_audio_format(i);
+	if (i < 0)
+		return i;
+	mmd->audio_format = i;
+	mmd->chunks_sent = 0;
+	mmd->current_chunk = 0;
+	mmd->offset = 0;
+	if (fstat(fileno(audio_file), &file_status) == -1)
+		return -E_FSTAT;
+	mmd->size = file_status.st_size;
+	mmd->mtime = file_status.st_mtime;
+	mmd->events++;
+	PARA_NOTICE_LOG("next audio file: %s\n", mmd->filename);
+	return 1;
+}
+
+static void get_song(void)
+{
+	char **sl = selectors[mmd->selector_num].get_audio_file_list(10);
+	int i;
+
+	if (!sl)
+		goto err_out;
+	for (i = 0; sl[i]; i++) {
+		struct timeval now;
+		PARA_INFO_LOG("trying %s\n", sl[i]);
+		if (strlen(sl[i]) >= _POSIX_PATH_MAX)
+			continue;
+		audio_file = fopen(sl[i], "r");
+		if (!audio_file)
+			continue;
+		strcpy(mmd->filename, sl[i]);
+		if (update_mmd() < 0) {
+			fclose(audio_file);
+			audio_file = NULL;
+			continue;
+		}
+		mmd->num_played++;
+		if (selectors[mmd->selector_num].update_audio_file)
+			selectors[mmd->selector_num].update_audio_file(sl[i]);
+		PARA_DEBUG_LOG("%s", "success\n");
+		mmd->new_vss_status_flags &= (~VSS_NEXT);
+		gettimeofday(&now, NULL);
+		tv_add(&now, &announce_tv, &data_send_barrier);
+
+		goto free;
+	}
+	PARA_ERROR_LOG("%s", "no valid files found\n");
+err_out:
+	mmd->new_vss_status_flags = VSS_NEXT;
+free:
+	if (sl) {
+		for (i = 0; sl[i]; i++)
+			free(sl[i]);
+		free(sl);
+	}
+}
+
+static int chk_barrier(const char *bname, const struct timeval *now,
+		const struct timeval *barrier, struct timeval *diff,
+		int print_log)
+{
+	long ms;
+
+	if (tv_diff(now, barrier, diff) > 0)
+		return 1;
+	ms = tv2ms(diff);
+	if (print_log && ms)
+		PARA_DEBUG_LOG("%s barrier: %lims left\n", bname, ms);
+	return -1;
+}
+
+static void vss_next_chunk_time(struct timeval *due)
+{
+	struct timeval tmp;
+
+	tv_scale(mmd->chunks_sent, &afl[mmd->audio_format].chunk_tv, &tmp);
+	tv_add(&tmp, &mmd->stream_start, due);
+}
+
+/*
+ * != NULL: timeout for next chunk
+ * NULL: nothing to do
+ */
+static struct timeval *vss_compute_timeout(void)
+{
+	static struct timeval the_timeout;
+	struct timeval now, next_chunk;
+
+	if (vss_next() && mmd->audio_format >= 0) {
+		/* only sleep a bit, nec*/
+		the_timeout.tv_sec = 0;
+		the_timeout.tv_usec = 100;
+		return &the_timeout;
+	}
+	gettimeofday(&now, NULL);
+	if (chk_barrier("autoplay_delay", &now, &autoplay_barrier,
+			&the_timeout, 1) < 0)
+		return &the_timeout;
+	if (chk_barrier("eof", &now, &eof_barrier, &the_timeout, 1) < 0)
+		return &the_timeout;
+	if (chk_barrier("data send", &now, &data_send_barrier,
+			&the_timeout, 1) < 0)
+		return &the_timeout;
+	if (mmd->audio_format < 0 || !vss_playing() || !audio_file)
+		return NULL;
+	vss_next_chunk_time(&next_chunk);
+	if (chk_barrier(afl[mmd->audio_format].name, &now, &next_chunk,
+			&the_timeout, 0) < 0)
+		return &the_timeout;
+	/* chunk is due or bof */
+	the_timeout.tv_sec = 0;
+	the_timeout.tv_usec = 0;
+	return &the_timeout;
+}
+
+static void vss_eof(struct audio_format_handler *af)
+{
+	struct timeval now;
+	int i;
+	char *tmp;
+
+	if (!af || !audio_file) {
+		for (i = 0; senders[i].name; i++)
+			senders[i].shutdown_clients();
+		return;
+	}
+	gettimeofday(&now, NULL);
+	tv_add(&af->eof_tv, &now, &eof_barrier);
+	af->close_audio_file();
+	audio_file = NULL;
+	mmd->audio_format = -1;
+	af = NULL;
+	mmd->chunks_sent = 0;
+	mmd->offset = 0;
+	mmd->seconds_total = 0;
+	tmp  = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_AUDIO_INFO1],
+		status_item_list[SI_AUDIO_INFO2], status_item_list[SI_AUDIO_INFO3]);
+	strcpy(mmd->audio_file_info, tmp);
+	free(tmp);
+	tmp  = make_message("%s:\n%s:\n%s:\n", status_item_list[SI_DBINFO1],
+		status_item_list[SI_DBINFO2], status_item_list[SI_DBINFO3]);
+	strcpy(mmd->selector_info, tmp);
+	free(tmp);
+	mmd->filename[0] = '\0';
+	mmd->size = 0;
+	mmd->events++;
+}
+
+/**
+ * get the header and of the current audio file
+ *
+ * \param header_len the length of the header is stored here
+ *
+ * \return a pointer to a buffer containing the header, or NULL, if no audio
+ * file is selected or if the current audio format does not need special header
+ * treamtment.
+ *
+ */
+char *vss_get_header(int *header_len)
+{
+	*header_len = 0;
+	if (mmd->audio_format < 0)
+		return NULL;
+	if (!afl[mmd->audio_format].get_header_info)
+		return NULL;
+	return afl[mmd->audio_format].get_header_info(header_len);
+}
+const char *supported_audio_formats(void)
+{
+	return SUPPORTED_AUDIO_FORMATS;
+}
+
+/**
+ * get the chunk time of the current audio file
+ *
+ * \return a pointer to a struct containing the chunk time, or NULL,
+ * if currently no audio file is selected.
+ */
+struct timeval *vss_chunk_time(void)
+{
+	if (mmd->audio_format < 0)
+		return NULL;
+	return &afl[mmd->audio_format].chunk_tv;
+}
+
+/**
+ * compute the timeout for para_server's main select-loop
+ *
+ * This function gets called from para_server to determine the timeout value
+ * for its main select loop.
+ *
+ * Before the timeout is computed, the current vss status flags are evaluated
+ * and acted upon by calling appropriate functions from the lower layers.
+ * Possible actions include
+ *
+ * 	- request a new file list from the current audio file selector
+ *	- shutdown of all senders (stop/pause command)
+ *	- reposition the stream (ff/jmp command)
+ *
+ * \return A pointer to a struct timeval containing the timeout for the next
+ * chunk of data to be sent, or NULL if we're not sending right now.
+ */
+struct timeval *vss_preselect(void)
+{
+	struct audio_format_handler *af = NULL;
+	int i, format;
+	struct timeval *ret;
+again:
+	format = mmd->audio_format;
+	if (format >= 0)
+		af = afl + format;
+	else
+		for (i = 0; senders[i].name; i++)
+			senders[i].shutdown_clients();
+	if (vss_next() && af) {
+		vss_eof(af);
+		return vss_compute_timeout();
+	}
+	if (vss_paused() || vss_repos()) {
+		for (i = 0; senders[i].name; i++)
+			senders[i].shutdown_clients();
+		if (af) {
+			struct timeval now;
+			gettimeofday(&now, NULL);
+			if (!vss_paused() || mmd->chunks_sent)
+				tv_add(&af->eof_tv, &now, &eof_barrier);
+			if (vss_repos())
+				tv_add(&now, &announce_tv, &data_send_barrier);
+			if (mmd->new_vss_status_flags & VSS_NOMORE)
+				mmd->new_vss_status_flags = VSS_NEXT;
+		}
+		mmd->chunks_sent = 0;
+	}
+	if (af && vss_repos() && mmd->current_chunk != mmd->repos_request)
+		af->reposition_stream(mmd->repos_request);
+	if (vss_repos()) {
+		mmd->new_vss_status_flags &= ~(VSS_REPOS);
+		mmd->current_chunk = mmd->repos_request;
+	}
+	ret = vss_compute_timeout();
+	if (!ret && !audio_file && vss_playing() &&
+			!(mmd->new_vss_status_flags & VSS_NOMORE)) {
+		PARA_DEBUG_LOG("%s", "ready and playing, but no audio file\n");
+		get_song();
+		goto again;
+	}
+	return ret;
+}
+
+/**
+ * main sending function
+ *
+ * This function gets called from para_server as soon as the next chunk of
+ * data should be pushed out. It first calls the read_chunk() function of
+ * the current audio format handler to obtain a pointer to the data to be
+ * sent out as well as its length. This information is then passed to each
+ * supported sender's send() function which does the actual sending.
+ *
+ * Return value: Positive return value on success, zero on eof and negative
+ * on errors.
+ */
+
+void vss_send_chunk(void)
+{
+	int i;
+	struct audio_format_handler *af;
+	char *buf;
+	ssize_t ret;
+	struct timeval now, due;
+
+	if (mmd->audio_format < 0 || !audio_file || !vss_playing())
+		return;
+	af = &afl[mmd->audio_format];
+	gettimeofday(&now, NULL);
+	vss_next_chunk_time(&due);
+	if (tv_diff(&due, &now, NULL) > 0)
+		return;
+	if (chk_barrier("eof", &now, &eof_barrier, &due, 1) < 0)
+		return;
+	if (chk_barrier("data send", &now, &data_send_barrier,
+			&due, 1) < 0)
+		return;
+	buf = af->read_chunk(mmd->current_chunk, &ret);
+	mmd->new_vss_status_flags &= ~VSS_REPOS;
+	if (!buf) {
+		if (ret < 0)
+			mmd->new_vss_status_flags = VSS_NEXT;
+		else
+			mmd->new_vss_status_flags |= VSS_NEXT;
+		vss_eof(af);
+		return;
+	}
+	if (!mmd->chunks_sent) {
+		struct timeval tmp;
+		gettimeofday(&mmd->stream_start, NULL);
+		tv_scale(mmd->current_chunk, &af->chunk_tv, &tmp);
+		mmd->offset = tv2ms(&tmp);
+		mmd->events++;
+	}
+	for (i = 0; senders[i].name; i++)
+		senders[i].send(mmd->current_chunk, mmd->chunks_sent, buf, ret);
+	mmd->new_vss_status_flags |= VSS_PLAYING;
+	mmd->chunks_sent++;
+	mmd->current_chunk++;
+}
diff --git a/vss.h b/vss.h
new file mode 100644
index 00000000..545647b7
--- /dev/null
+++ b/vss.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.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, USA.
+ */
+
+/** \file vss.h exported functions from vss.c (para_server) */
+void vss_init(void);
+void vss_send_chunk(void);
+struct timeval *vss_preselect(void);
+const char *audio_format_name(int);
+unsigned int vss_playing(void);
+unsigned int vss_next(void);
+unsigned int vss_repos(void);
+unsigned int vss_paused(void);
+char *vss_get_header(int *header_len);
+struct timeval *vss_chunk_time(void);
+int guess_audio_format(const char *name);
+const char *supported_audio_formats(void);
+/* status flags */
+#define VSS_NOMORE 1
+#define VSS_NEXT 2
+#define VSS_REPOS 4
+#define VSS_PLAYING 8
+#define VSS_CHANGE 16