libvo, libao: remove useless video and audio output drivers

Some of these have only limited use, and some of these have no use at
all. Remove them. They make maintainance harder and nobody needs them.
It's possible that many of the removed drivers were very useful a dozen
of years ago, but now it's 2012.

Note that some of these could be added back, in case they were more
useful than I thought. But right now, they are just a burden.

Reason for removal for each module:
    vo_3dfx, vo_dfbmga, vo_dxr3, vo_ivtv, vo_mga, vo_s3fb,
    vo_tdfxfb, vo_xmga, vo_tdfx_vid:
        All of these are for very specific and outdated hardware. Some
        of them require non-standard kernel drivers or do direct HW
        access.
    vo_dga: the most crappy and ancient way to get fast output on X.
    vo_aa: there's vo_caca for the same purpose.
    vo_ggi: this never lived, and is entirely useless.
    vo_mpegpes: for DVB cards, I can't test this and it's crappy.
    vo_fbdev, vo_fbdev2: there's vo_directfb2
    vo_bl: what is this even? But it's neither important, nor alive.
    vo_svga, vo_vesa: you want to use this? You can't be serious.
    vo_wii: I can't test this, and who the hell uses this?
    vo_xvr100: some Sun thing.
    vo_xover: only useful in connection with xvr100.
    ao_nas: still alive, but I doubt it has any meaning today.
    ao_sun: Sun.
    ao_win32: use ao_dsound or ao_portaudio instead.
    ao_ivtv: removed along vo_ivtv.

Also get rid of anything SDL related. SDL 1.x is total crap for video
output, and will be replaced with SDL 2.x soon (perhaps), so if you
want to use SDL, write output drivers for SDL 2.x.

Additionally, I accidentally damaged Sun support, which made me
completely remove Sun/Solaris support. Nobody cares about this anyway.

Some left overs from previous commits removing modules were cleaned up.

1 files changed, 0 insertions, 646 deletions

diff --git a/libao2/ao_nas.c b/libao2/ao_nas.c
deleted file mode 100644
index d3274df9a5..0000000000
--- a/libao2/ao_nas.c
+++ /dev/null
@@ -1,646 +0,0 @@
-/*
- * NAS audio output driver
- *
- * copyright (c) 2001 Tobias Diedrich <ranma@gmx.at>
- *
- * Based on the libaudiooss parts rewritten by me, which were
- * originally based on the NAS output plugin for XMMS.
- *
- * XMMS plugin by Willem Monsuwe
- * adapted for libaudiooss by Jon Trulson
- * further modified by Erik Inge Bolsø
- * largely rewritten and used for this ao driver by Tobias Diedrich
- *
- * This file is part of MPlayer.
- *
- * MPlayer 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.
- *
- * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-/*
- * Theory of operation:
- *
- * The NAS consists of two parts, a server daemon and a client.
- * We setup the server to use a buffer of size bytes_per_second
- * with a low watermark of buffer_size - NAS_FRAG_SIZE.
- * Upon starting the flow the server will generate a buffer underrun
- * event and the event handler will fill the buffer for the first time.
- * Now the server will generate a lowwater event when the server buffer
- * falls below the low watermark value. The event handler gets called
- * again and refills the buffer by the number of bytes requested by the
- * server (usually a multiple of 4096). To prevent stuttering on
- * startup (start of playing, seeks, unpausing) the client buffer should
- * be bigger than the server buffer. (For debugging we also do some
- * accounting of what we think how much of the server buffer is filled)
- */
-
-#include <unistd.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <pthread.h>
-#include <limits.h>
-#include <audio/audiolib.h>
-
-#include "config.h"
-#include "mp_msg.h"
-
-#include "audio_out.h"
-#include "audio_out_internal.h"
-#include "libaf/af_format.h"
-
-/* NAS_FRAG_SIZE must be a power-of-two value */
-#define NAS_FRAG_SIZE 4096
-
-static const char * const nas_event_types[] = {
-	"Undefined",
-	"Undefined",
-	"ElementNotify",
-	"GrabNotify",
-	"MonitorNotify",
-	"BucketNotify",
-	"DeviceNotify"
-};
-
-static const char * const nas_elementnotify_kinds[] = {
-	"LowWater",
-	"HighWater",
-	"State",
-	"Unknown"
-};
-
-static const char * const nas_states[] = {
-	"Stop",
-	"Start",
-	"Pause",
-	"Any"
-};
-
-static const char * const nas_reasons[] = {
-	"User",
-	"Underrun",
-	"Overrun",
-	"EOF",
-	"Watermark",
-	"Hardware",
-	"Any"
-};
-
-static const char* nas_reason(unsigned int reason)
-{
-	if (reason > 6) reason = 6;
-	return nas_reasons[reason];
-}
-
-static const char* nas_elementnotify_kind(unsigned int kind)
-{
-	if (kind > 2) kind = 3;
-	return nas_elementnotify_kinds[kind];
-}
-
-static const char* nas_event_type(unsigned int type) {
-	if (type > 6) type = 0;
-	return nas_event_types[type];
-}
-
-static const char* nas_state(unsigned int state) {
-	if (state>3) state = 3;
-	return nas_states[state];
-}
-
-static const ao_info_t info =
-{
-	"NAS audio output",
-	"nas",
-	"Tobias Diedrich <ranma+mplayer@tdiedrich.de>",
-	""
-};
-
-struct ao_nas_data {
-	AuServer	*aud;
-	AuFlowID	flow;
-	AuDeviceID	dev;
-	AuFixedPoint	gain;
-
-	unsigned int state;
-	int expect_underrun;
-
-	char *client_buffer;
-	char *server_buffer;
-	unsigned int client_buffer_size;
-	unsigned int client_buffer_used;
-	unsigned int server_buffer_size;
-	unsigned int server_buffer_used;
-	pthread_mutex_t buffer_mutex;
-
-	pthread_t event_thread;
-	int stop_thread;
-};
-
-static struct ao_nas_data *nas_data;
-
-LIBAO_EXTERN(nas)
-
-static void nas_print_error(AuServer *aud, const char *prefix, AuStatus as)
-{
-	char s[100];
-	AuGetErrorText(aud, as, s, 100);
-	mp_msg(MSGT_AO, MSGL_ERR, "ao_nas: %s: returned status %d (%s)\n", prefix, as, s);
-}
-
-static int nas_readBuffer(struct ao_nas_data *nas_data, unsigned int num)
-{
-	AuStatus as;
-
-	pthread_mutex_lock(&nas_data->buffer_mutex);
-	mp_msg(MSGT_AO, MSGL_DBG2, "ao_nas: nas_readBuffer(): num=%d client=%d/%d server=%d/%d\n",
-			num,
-			nas_data->client_buffer_used, nas_data->client_buffer_size,
-			nas_data->server_buffer_used, nas_data->server_buffer_size);
-
-	if (nas_data->client_buffer_used == 0) {
-		mp_msg(MSGT_AO, MSGL_DBG2, "ao_nas: buffer is empty, nothing read.\n");
-		pthread_mutex_unlock(&nas_data->buffer_mutex);
-		return 0;
-	}
-	if (num > nas_data->client_buffer_used)
-		num = nas_data->client_buffer_used;
-
-	/*
-	 * It is not appropriate to call AuWriteElement() here because the
-	 * buffer is locked and delays writing to the network will cause
-	 * other threads to block waiting for buffer_mutex.  Instead the
-	 * data is copied to "server_buffer" and written to the network
-	 * outside of the locked section of code.
-	 *
-	 * (Note: Rather than these two buffers, a single circular buffer
-	 *  could eliminate the memcpy/memmove steps.)
-	 */
-	/* make sure we don't overflow the buffer */
-	if (num > nas_data->server_buffer_size)
-		num = nas_data->server_buffer_size;
-	memcpy(nas_data->server_buffer, nas_data->client_buffer, num);
-
-	nas_data->client_buffer_used -= num;
-	nas_data->server_buffer_used += num;
-	memmove(nas_data->client_buffer, nas_data->client_buffer + num, nas_data->client_buffer_used);
-	pthread_mutex_unlock(&nas_data->buffer_mutex);
-
-	/*
-	 * Now write the new buffer to the network.
-	 */
-	AuWriteElement(nas_data->aud, nas_data->flow, 0, num, nas_data->server_buffer, AuFalse, &as);
-	if (as != AuSuccess)
-		nas_print_error(nas_data->aud, "nas_readBuffer(): AuWriteElement", as);
-
-	return num;
-}
-
-static int nas_writeBuffer(struct ao_nas_data *nas_data, void *data, unsigned int len)
-{
-	pthread_mutex_lock(&nas_data->buffer_mutex);
-	mp_msg(MSGT_AO, MSGL_DBG2, "ao_nas: nas_writeBuffer(): len=%d client=%d/%d server=%d/%d\n",
-			len, nas_data->client_buffer_used, nas_data->client_buffer_size,
-			nas_data->server_buffer_used, nas_data->server_buffer_size);
-
-	/* make sure we don't overflow the buffer */
-	if (len > nas_data->client_buffer_size - nas_data->client_buffer_used)
-		len = nas_data->client_buffer_size - nas_data->client_buffer_used;
-	memcpy(nas_data->client_buffer + nas_data->client_buffer_used, data, len);
-	nas_data->client_buffer_used += len;
-
-	pthread_mutex_unlock(&nas_data->buffer_mutex);
-
-	return len;
-}
-
-static int nas_empty_event_queue(struct ao_nas_data *nas_data)
-{
-	AuEvent ev;
-	int result = 0;
-
-	while (AuScanForTypedEvent(nas_data->aud, AuEventsQueuedAfterFlush,
-				   AuTrue, AuEventTypeElementNotify, &ev)) {
-		AuDispatchEvent(nas_data->aud, &ev);
-		result = 1;
-	}
-	return result;
-}
-
-static void *nas_event_thread_start(void *data)
-{
-	struct ao_nas_data *nas_data = data;
-
-	do {
-		mp_msg(MSGT_AO, MSGL_DBG2,
-		       "ao_nas: event thread heartbeat (state=%s)\n",
-		       nas_state(nas_data->state));
-		nas_empty_event_queue(nas_data);
-		usleep(1000);
-	} while (!nas_data->stop_thread);
-
-	return NULL;
-}
-
-static AuBool nas_error_handler(AuServer* aud, AuErrorEvent* ev)
-{
-	char s[100];
-	AuGetErrorText(aud, ev->error_code, s, 100);
-	mp_msg(MSGT_AO, MSGL_ERR, "ao_nas: error [%s]\n"
-		"error_code: %d\n"
-		"request_code: %d\n"
-		"minor_code: %d\n",
-		s,
-		ev->error_code,
-		ev->request_code,
-		ev->minor_code);
-
-	return AuTrue;
-}
-
-static AuBool nas_event_handler(AuServer *aud, AuEvent *ev, AuEventHandlerRec *hnd)
-{
-	AuElementNotifyEvent *event = (AuElementNotifyEvent *) ev;
-	struct ao_nas_data *nas_data = hnd->data;
-
-	mp_msg(MSGT_AO, MSGL_DBG2, "ao_nas: event_handler(): type %s kind %s state %s->%s reason %s numbytes %d expect_underrun %d\n",
-		nas_event_type(event->type),
-		nas_elementnotify_kind(event->kind),
-		nas_state(event->prev_state),
-		nas_state(event->cur_state),
-		nas_reason(event->reason),
-		(int)event->num_bytes,
-		nas_data->expect_underrun);
-
-	if (event->num_bytes > INT_MAX) {
-		mp_msg(MSGT_AO, MSGL_ERR, "ao_nas: num_bytes > 2GB, server buggy?\n");
-	}
-
-	if (event->num_bytes > nas_data->server_buffer_used)
-		event->num_bytes = nas_data->server_buffer_used;
-	nas_data->server_buffer_used -= event->num_bytes;
-
-	switch (event->reason) {
-	case AuReasonWatermark:
-		nas_readBuffer(nas_data, event->num_bytes);
-		break;
-	case AuReasonUnderrun:
-		// buffer underrun -> refill buffer
-		nas_data->server_buffer_used = 0;
-		if (nas_data->expect_underrun) {
-			nas_data->expect_underrun = 0;
-		} else {
-			static int hint = 1;
-			mp_msg(MSGT_AO, MSGL_WARN,
-			       "ao_nas: Buffer underrun.\n");
-			if (hint) {
-				hint = 0;
-				mp_msg(MSGT_AO, MSGL_HINT,
-				       "Possible reasons are:\n"
-				       "1) Network congestion.\n"
-				       "2) Your NAS server is too slow.\n"
-				       "Try renicing your nasd to e.g. -15.\n");
-			}
-		}
-		if (nas_readBuffer(nas_data,
-		                   nas_data->server_buffer_size -
-		                   nas_data->server_buffer_used) != 0) {
-			event->cur_state = AuStateStart;
-			break;
-		}
-		mp_msg(MSGT_AO, MSGL_DBG2,
-			"ao_nas: Can't refill buffer, stopping flow.\n");
-		AuStopFlow(aud, nas_data->flow, NULL);
-		break;
-	default:
-		break;
-	}
-	nas_data->state=event->cur_state;
-	return AuTrue;
-}
-
-static AuDeviceID nas_find_device(AuServer *aud, int nch)
-{
-	int i;
-	for (i = 0; i < AuServerNumDevices(aud); i++) {
-		AuDeviceAttributes *dev = AuServerDevice(aud, i);
-		if ((AuDeviceKind(dev) == AuComponentKindPhysicalOutput) &&
-		     AuDeviceNumTracks(dev) == nch) {
-			return AuDeviceIdentifier(dev);
-		}
-	}
-	return AuNone;
-}
-
-static unsigned int nas_aformat_to_auformat(unsigned int *format)
-{
-	switch (*format) {
-	case	AF_FORMAT_U8:
-		return AuFormatLinearUnsigned8;
-	case	AF_FORMAT_S8:
-		return AuFormatLinearSigned8;
-	case	AF_FORMAT_U16_LE:
-		return AuFormatLinearUnsigned16LSB;
-	case	AF_FORMAT_U16_BE:
-		return AuFormatLinearUnsigned16MSB;
-	case	AF_FORMAT_S16_LE:
-		return AuFormatLinearSigned16LSB;
-	case	AF_FORMAT_S16_BE:
-		return AuFormatLinearSigned16MSB;
-	case	AF_FORMAT_MU_LAW:
-		return AuFormatULAW8;
-	default:
-		*format=AF_FORMAT_S16_NE;
-		return nas_aformat_to_auformat(format);
-	}
-}
-
-// to set/get/query special features/parameters
-static int control(int cmd, void *arg)
-{
-	AuElementParameters aep;
-	AuStatus as;
-	int retval = CONTROL_UNKNOWN;
-
-	ao_control_vol_t *vol = (ao_control_vol_t *)arg;
-
-	switch (cmd) {
-	case AOCONTROL_GET_VOLUME:
-
-		vol->right = (float)nas_data->gain/AU_FIXED_POINT_SCALE*50;
-		vol->left = vol->right;
-
-		mp_msg(MSGT_AO, MSGL_DBG2, "ao_nas: AOCONTROL_GET_VOLUME: %.2f\n", vol->right);
-		retval = CONTROL_OK;
-		break;
-
-	case AOCONTROL_SET_VOLUME:
-		/*
-		 * kn: we should have vol->left == vol->right but i don't
-		 * know if something can change it outside of ao_nas
-		 * so i take the mean of both values.
-		 */
-		nas_data->gain = AU_FIXED_POINT_SCALE*((vol->left+vol->right)/2)/50;
-		mp_msg(MSGT_AO, MSGL_DBG2, "ao_nas: AOCONTROL_SET_VOLUME: %.2f\n", (vol->left+vol->right)/2);
-
-		aep.parameters[AuParmsMultiplyConstantConstant]=nas_data->gain;
-		aep.flow = nas_data->flow;
-		aep.element_num = 1;
-		aep.num_parameters = AuParmsMultiplyConstant;
-
-		AuSetElementParameters(nas_data->aud, 1, &aep, &as);
-		if (as != AuSuccess) {
-			nas_print_error(nas_data->aud,
-			                "control(): AuSetElementParameters", as);
-			retval = CONTROL_ERROR;
-		} else retval = CONTROL_OK;
-		break;
-	};
-
-	return retval;
-}
-
-// open & setup audio device
-// return: 1=success 0=fail
-static int init(int rate,int channels,int format,int flags)
-{
-	AuElement elms[3];
-	AuStatus as;
-	unsigned char auformat = nas_aformat_to_auformat(&format);
-	int bytes_per_sample = channels * AuSizeofFormat(auformat);
-	int buffer_size;
-	char *server;
-
-	(void)flags; /* shut up 'unused parameter' warning */
-
-	global_ao->no_persistent_volume = true;
-
-	nas_data=malloc(sizeof(struct ao_nas_data));
-	memset(nas_data, 0, sizeof(struct ao_nas_data));
-
-	mp_msg(MSGT_AO, MSGL_V, "ao2: %d Hz  %d chans  %s\n",rate,channels,
-		af_fmt2str_short(format));
-
-	ao_data.format = format;
-	ao_data.samplerate = rate;
-	ao_data.channels = channels;
-	ao_data.outburst = NAS_FRAG_SIZE;
-	ao_data.bps = rate * bytes_per_sample;
-	buffer_size = ao_data.bps; /* buffer 1 second */
-	/*
-	 * round up to multiple of NAS_FRAG_SIZE
-	 * divide by 3 first because of 2:1 split
-	 */
-	buffer_size = (buffer_size/3 + NAS_FRAG_SIZE-1) & ~(NAS_FRAG_SIZE-1);
-	ao_data.buffersize = buffer_size*3;
-
-	nas_data->client_buffer_size = buffer_size*2;
-	nas_data->client_buffer = malloc(nas_data->client_buffer_size);
-	nas_data->server_buffer_size = buffer_size;
-	nas_data->server_buffer = malloc(nas_data->server_buffer_size);
-
-	if (!bytes_per_sample) {
-		mp_msg(MSGT_AO, MSGL_ERR, "ao_nas: init(): Zero bytes per sample -> nosound\n");
-		return 0;
-	}
-
-	if (!(server = getenv("AUDIOSERVER")) &&
-	    !(server = getenv("DISPLAY"))) {
-		mp_msg(MSGT_AO, MSGL_ERR, "ao_nas: init(): AUDIOSERVER environment variable not set -> nosound\n");
-		return 0;
-	}
-
-	mp_msg(MSGT_AO, MSGL_V, "ao_nas: init(): Using audioserver %s\n", server);
-
-	nas_data->aud = AuOpenServer(server, 0, NULL, 0, NULL, NULL);
-	if (!nas_data->aud) {
-		mp_msg(MSGT_AO, MSGL_ERR, "ao_nas: init(): Can't open nas audio server -> nosound\n");
-		return 0;
-	}
-
-	while (channels>0) {
-		nas_data->dev = nas_find_device(nas_data->aud, channels);
-		if (nas_data->dev != AuNone &&
-		    ((nas_data->flow = AuCreateFlow(nas_data->aud, NULL)) != 0))
-			break;
-		channels--;
-	}
-
-	if (nas_data->flow == 0) {
-		mp_msg(MSGT_AO, MSGL_ERR, "ao_nas: init(): Can't find a suitable output device -> nosound\n");
-		AuCloseServer(nas_data->aud);
-		nas_data->aud = 0;
-		return 0;
-	}
-
-	AuMakeElementImportClient(elms, rate, auformat, channels, AuTrue,
-				buffer_size / bytes_per_sample,
-				(buffer_size - NAS_FRAG_SIZE) /
-				bytes_per_sample, 0, NULL);
-	nas_data->gain = AuFixedPointFromFraction(1, 1);
-	AuMakeElementMultiplyConstant(elms+1, 0, nas_data->gain);
-	AuMakeElementExportDevice(elms+2, 1, nas_data->dev, rate,
-				AuUnlimitedSamples, 0, NULL);
-	AuSetElements(nas_data->aud, nas_data->flow, AuTrue, sizeof(elms)/sizeof(*elms), elms, &as);
-	if (as != AuSuccess) {
-		nas_print_error(nas_data->aud, "init(): AuSetElements", as);
-		AuCloseServer(nas_data->aud);
-		nas_data->aud = 0;
-		return 0;
-	}
-	AuRegisterEventHandler(nas_data->aud, AuEventHandlerIDMask |
-				AuEventHandlerTypeMask,
-				AuEventTypeElementNotify, nas_data->flow,
-				nas_event_handler, (AuPointer) nas_data);
-	AuSetErrorHandler(nas_data->aud, nas_error_handler);
-	nas_data->state=AuStateStop;
-	nas_data->expect_underrun=0;
-
-	pthread_mutex_init(&nas_data->buffer_mutex, NULL);
-	pthread_create(&nas_data->event_thread, NULL, &nas_event_thread_start, nas_data);
-
-	return 1;
-}
-
-// close audio device
-static void uninit(int immed){
-
-	mp_msg(MSGT_AO, MSGL_DBG3, "ao_nas: uninit()\n");
-
-	nas_data->expect_underrun = 1;
-	if (!immed)
-	while (nas_data->state != AuStateStop) usleep(1000);
-	nas_data->stop_thread = 1;
-	pthread_join(nas_data->event_thread, NULL);
-	AuCloseServer(nas_data->aud);
-	nas_data->aud = 0;
-	free(nas_data->client_buffer);
-	free(nas_data->server_buffer);
-}
-
-// stop playing and empty buffers (for seeking/pause)
-static void reset(void){
-	AuStatus as;
-
-	mp_msg(MSGT_AO, MSGL_DBG3, "ao_nas: reset()\n");
-
-	pthread_mutex_lock(&nas_data->buffer_mutex);
-	nas_data->client_buffer_used = 0;
-	pthread_mutex_unlock(&nas_data->buffer_mutex);
-	while (nas_data->state != AuStateStop) {
-		AuStopFlow(nas_data->aud, nas_data->flow, &as);
-		if (as != AuSuccess)
-			nas_print_error(nas_data->aud, "reset(): AuStopFlow", as);
-		usleep(1000);
-	}
-}
-
-// stop playing, keep buffers (for pause)
-static void audio_pause(void)
-{
-	AuStatus as;
-	mp_msg(MSGT_AO, MSGL_DBG3, "ao_nas: audio_pause()\n");
-
-	AuStopFlow(nas_data->aud, nas_data->flow, &as);
-}
-
-// resume playing, after audio_pause()
-static void audio_resume(void)
-{
-	AuStatus as;
-
-	mp_msg(MSGT_AO, MSGL_DBG3, "ao_nas: audio_resume()\n");
-
-	AuStartFlow(nas_data->aud, nas_data->flow, &as);
-	if (as != AuSuccess)
-		nas_print_error(nas_data->aud,
-		                "play(): AuStartFlow", as);
-}
-
-
-// return: how many bytes can be played without blocking
-static int get_space(void)
-{
-	int result;
-
-	mp_msg(MSGT_AO, MSGL_DBG3, "ao_nas: get_space()\n");
-
-	pthread_mutex_lock(&nas_data->buffer_mutex);
-	result = nas_data->client_buffer_size - nas_data->client_buffer_used;
-	pthread_mutex_unlock(&nas_data->buffer_mutex);
-
-	return result;
-}
-
-// plays 'len' bytes of 'data'
-// it should round it down to outburst*n
-// return: number of bytes played
-static int play(void* data,int len,int flags)
-{
-	int written, maxbursts = 0, playbursts = 0;
-	AuStatus as;
-
-	mp_msg(MSGT_AO, MSGL_DBG3,
-	       "ao_nas: play(%p, %d, %d)\n",
-	       data, len, flags);
-
-	if (len == 0)
-		return 0;
-
-	if (!(flags & AOPLAY_FINAL_CHUNK)) {
-		pthread_mutex_lock(&nas_data->buffer_mutex);
-		maxbursts = (nas_data->client_buffer_size -
-			     nas_data->client_buffer_used) / ao_data.outburst;
-		playbursts = len / ao_data.outburst;
-		len = (playbursts > maxbursts ? maxbursts : playbursts) *
-			   ao_data.outburst;
-		pthread_mutex_unlock(&nas_data->buffer_mutex);
-	}
-
-	/*
-	 * If AOPLAY_FINAL_CHUNK is set, we did not actually check len fits
-	 * into the available buffer space, but mplayer.c shouldn't give us
-	 * more to play than we report to it by get_space(), so this should be
-	 * fine.
-	 */
-	written = nas_writeBuffer(nas_data, data, len);
-
-	if (nas_data->state != AuStateStart &&
-	    (maxbursts == playbursts ||
-	     flags & AOPLAY_FINAL_CHUNK)) {
-		mp_msg(MSGT_AO, MSGL_DBG2, "ao_nas: play(): Starting flow.\n");
-		nas_data->expect_underrun = 1;
-		AuStartFlow(nas_data->aud, nas_data->flow, &as);
-		if (as != AuSuccess)
-			nas_print_error(nas_data->aud, "play(): AuStartFlow", as);
-	}
-
-	return written;
-}
-
-// return: delay in seconds between first and last sample in buffer
-static float get_delay(void)
-{
-	float result;
-
-	mp_msg(MSGT_AO, MSGL_DBG3, "ao_nas: get_delay()\n");
-
-	pthread_mutex_lock(&nas_data->buffer_mutex);
-	result = ((float)(nas_data->client_buffer_used +
-			  nas_data->server_buffer_used)) /
-		 (float)ao_data.bps;
-	pthread_mutex_unlock(&nas_data->buffer_mutex);
-
-	return result;
-}