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/**
* Plays stereo data on a mono device or mono data on a stereo device
* using one of the following flows:
*
* Track 0
* ++=== BUNDLER --------
* STEREO Tracks 0,1 || \____ MONO
* BUCKET =========== MULT .5 ===++ ____ SUM ---- DEVICE
* || Track 1 /
* ++=== BUNDLER --------
*
*
* MONO STEREO
* BUCKET ---------- BUNDLER ========== DEVICE
*
* $NCDId: @(#)bundle.c,v 1.2 1994/05/09 18:41:58 greg Exp $
*/
#include <stdio.h>
#include <stdlib.h>
#include <audio/audiolib.h>
#include <audio/soundlib.h>
static void
fatalError(const char *message, const char *arg)
{
fprintf(stderr, message, arg);
fprintf(stderr, "\n");
exit(1);
}
static AuBool
EventHandler(AuServer *aud, AuEvent *ev, AuEventHandlerRec *handler)
{
AuBool *done = (AuBool *) handler->data;
AuElementNotifyEvent *event = (AuElementNotifyEvent *) ev;
if (ev->type == AuEventTypeElementNotify &&
event->kind == AuElementNotifyKindState &&
event->cur_state == AuStateStop)
*done = AuTrue;
return AuTrue;
}
int
main(int argc, char **argv)
{
char *file = argv[1];
AuServer *aud;
Sound s;
AuBucketID bucket;
AuBucketAttributes *ba;
int i,
toTracks;
AuDeviceID device = AuNone;
AuFlowID flow;
AuElement elements[6];
AuInputTrack track[2];
unsigned short inputs[2];
AuEventHandlerRec *handler;
AuBool done = AuFalse;
if (argc < 2)
fatalError("usage: bundle filename", NULL);
if (!(s = SoundOpenFileForReading(file)))
fatalError("Can't open %s", file);
toTracks = SoundNumTracks(s) == 1 ? 2 : 1;
SoundCloseFile(s);
if (!(aud = AuOpenServer(NULL, 0, NULL, 0, NULL, NULL)))
exit(1);
/* look for an output device */
for (i = 0; i < AuServerNumDevices(aud); i++)
if ((AuDeviceKind(AuServerDevice(aud, i)) ==
AuComponentKindPhysicalOutput) &&
AuDeviceNumTracks(AuServerDevice(aud, i)) == toTracks)
{
device = AuDeviceIdentifier(AuServerDevice(aud, i));
break;
}
if (device == AuNone)
fatalError("Couldn't find an output device", NULL);
bucket = AuSoundCreateBucketFromFile(aud, file, AuAccessAllMasks, &ba,
NULL);
if (!(flow = AuCreateFlow(aud, NULL)))
fatalError("Couldn't create flow", NULL);
AuMakeElementImportBucket(&elements[0], AuBucketSampleRate(ba), bucket,
AuUnlimitedSamples, 0, 0, NULL);
if (toTracks == 1)
{
AuMakeElementMultiplyConstant(&elements[1], 0,
AuFixedPointFromFraction(1, 2));
AuMakeInputTrack(&track[0], 1, 0);
AuMakeElementBundle(&elements[2], 1, &track[0]);
AuMakeInputTrack(&track[1], 1, 1);
AuMakeElementBundle(&elements[3], 1, &track[1]);
inputs[0] = 2;
inputs[1] = 3;
AuMakeElementSum(&elements[4], 2, inputs);
AuMakeElementExportDevice(&elements[5], 4, device,
AuBucketSampleRate(ba),
AuUnlimitedSamples, 0, NULL);
AuSetElements(aud, flow, AuTrue, 6, elements, NULL);
}
else
{
AuMakeInputTrack(&track[0], 0, 0);
AuMakeInputTrack(&track[1], 0, 0);
AuMakeElementBundle(&elements[1], 2, track);
AuMakeElementExportDevice(&elements[2], 1, device,
AuBucketSampleRate(ba),
AuUnlimitedSamples, 0, NULL);
AuSetElements(aud, flow, AuTrue, 3, elements, NULL);
}
AuFreeBucketAttributes(aud, 1, ba);
if (!(handler = AuRegisterEventHandler(aud, AuEventHandlerIDMask,
0, flow, EventHandler,
(AuPointer) &done)))
fatalError("Couldn't register event handler", NULL);
AuStartFlow(aud, flow, NULL);
while (!done)
{
AuEvent ev;
AuNextEvent(aud, AuTrue, &ev);
AuDispatchEvent(aud, &ev);
}
AuUnregisterEventHandler(aud, handler);
AuDestroyFlow(aud, flow, NULL);
AuDestroyBucket(aud, bucket, NULL);
AuCloseServer(aud);
return 0;
}
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