static
int config(struct audio_config *config)
{
unsigned int bitdepth;
int format = 0;
AuDeviceID device;
AuElement elements[2];
bitdepth = config->precision & ~7;
if (bitdepth == 0 || bitdepth > 16)
bitdepth = 16;
switch (config->precision = bitdepth) {
case 8:
format = AuFormatLinearSigned8;
audio_pcm = audio_pcm_s8;
break;
case 16:
# if defined(WORDS_BIGENDIAN)
format = AuFormatLinearSigned16MSB;
audio_pcm = audio_pcm_s16be;
# else
format = AuFormatLinearSigned16LSB;
audio_pcm = audio_pcm_s16le;
# endif
break;
}
device = getdevice(server, &config->channels);
if (device == AuNone) {
audio_error = _("could not find an output device");
return -1;
}
AuMakeElementImportClient(&elements[0], config->speed, format,
config->channels, AuTrue,
config->speed * 2, config->speed, 0, 0);
AuMakeElementExportDevice(&elements[1], 0, device, config->speed,
AuUnlimitedSamples, 0, 0);
AuSetElements(server, flow, AuTrue, 2, elements, 0);
AuRegisterEventHandler(server, AuEventHandlerIDMask, 0, flow,
eventhandler, 0);
AuStartFlow(server, flow, 0);
return 0;
}
static int nas_open(WINE_WAVEOUT* wwo) {
AuElement elements[3];
if (!wwo->AuServ)
return 0;
if (!nas_finddev(wwo))
return 0;
if (!(wwo->AuFlow = AuCreateFlow(wwo->AuServ, NULL)))
return 0;
wwo->BufferSize = FRAG_SIZE * FRAG_COUNT;
AuMakeElementImportClient(&elements[0], wwo->format.wf.nSamplesPerSec,
wwo->format.wBitsPerSample == 16 ? AuFormatLinearSigned16LSB : AuFormatLinearUnsigned8,
wwo->format.wf.nChannels, AuTrue, wwo->BufferSize, wwo->BufferSize / 2, 0, NULL);
AuMakeElementExportDevice(&elements[1], 0, wwo->AuDev, wwo->format.wf.nSamplesPerSec,
AuUnlimitedSamples, 0, NULL);
AuSetElements(wwo->AuServ, wwo->AuFlow, AuTrue, 2, elements, NULL);
AuRegisterEventHandler(wwo->AuServ, AuEventHandlerIDMask, 0, wwo->AuFlow,
event_handler, (AuPointer) wwo);
wwo->PlayedTotal = 0;
wwo->WrittenTotal = 0;
wwo->open = 1;
wwo->BufferUsed = 0;
wwo->writeBytes = 0;
wwo->freeBytes = 0;
wwo->sendBytes = 0;
wwo->SoundBuffer = NULL;
wwo->FlowStarted = 0;
AuStartFlow(wwo->AuServ, wwo->AuFlow, NULL);
AuPauseFlow(wwo->AuServ, wwo->AuFlow, NULL);
wwo->FlowStarted = 1;
return 1;
}
static int NAS_OpenAudio(_THIS, SDL_AudioSpec *spec)
{
AuElement elms[3];
int buffer_size;
Uint16 test_format, format;
this->hidden->mixbuf = NULL;
/* Try for a closest match on audio format */
format = 0;
for ( test_format = SDL_FirstAudioFormat(spec->format);
! format && test_format; ) {
format = sdlformat_to_auformat(test_format);
if (format == AuNone) {
test_format = SDL_NextAudioFormat();
}
}
if ( format == 0 ) {
SDL_SetError("Couldn't find any hardware audio formats");
return(-1);
}
spec->format = test_format;
this->hidden->aud = AuOpenServer("", 0, NULL, 0, NULL, NULL);
if (this->hidden->aud == 0)
{
SDL_SetError("Couldn't open connection to NAS server");
return (-1);
}
this->hidden->dev = find_device(this, spec->channels);
if ((this->hidden->dev == AuNone) || (!(this->hidden->flow = AuCreateFlow(this->hidden->aud, NULL)))) {
AuCloseServer(this->hidden->aud);
this->hidden->aud = 0;
SDL_SetError("Couldn't find a fitting playback device on NAS server");
return (-1);
}
buffer_size = spec->freq;
if (buffer_size < 4096)
buffer_size = 4096;
if (buffer_size > 32768)
buffer_size = 32768; /* So that the buffer won't get unmanageably big. */
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(spec);
this2 = this->hidden;
AuMakeElementImportClient(elms, spec->freq, format, spec->channels, AuTrue,
buffer_size, buffer_size / 4, 0, NULL);
AuMakeElementExportDevice(elms+1, 0, this->hidden->dev, spec->freq,
AuUnlimitedSamples, 0, NULL);
AuSetElements(this->hidden->aud, this->hidden->flow, AuTrue, 2, elms, NULL);
AuRegisterEventHandler(this->hidden->aud, AuEventHandlerIDMask, 0, this->hidden->flow,
event_handler, (AuPointer) NULL);
AuStartFlow(this->hidden->aud, this->hidden->flow, NULL);
/* Allocate mixing buffer */
this->hidden->mixlen = spec->size;
this->hidden->mixbuf = (Uint8 *)SDL_AllocAudioMem(this->hidden->mixlen);
if ( this->hidden->mixbuf == NULL ) {
return(-1);
}
memset(this->hidden->mixbuf, spec->silence, spec->size);
/* Get the parent process id (we're the parent of the audio thread) */
this->hidden->parent = getpid();
/* We're ready to rock and roll. :-) */
return(0);
}
static int init(struct xmp_context *ctx)
{
struct xmp_options *o = &ctx->o;
int channels, rate, format, buf_samples;
int duration, gain, watermark;
char *server;
AuDeviceID device = AuNone;
AuElement element[2];
char *token, **parm;
int i;
duration = 2;
gain = 100;
server = NULL;
watermark = 10;
channels = 2;
rate = o->freq;
parm_init();
chkparm1("duration", duration = atoi(token));
chkparm1("gain", gain = atoi(token));
chkparm1("server", server = token);
chkparm1("watermark", watermark = atoi(token));
parm_end();
if (o->resol == 8) {
format = o->outfmt & XMP_FMT_UNS ?
AuFormatLinearUnsigned8 : AuFormatLinearSigned8;
} else {
if (o->big_endian) {
format = o->outfmt & XMP_FMT_UNS ?
AuFormatLinearUnsigned16MSB :
AuFormatLinearSigned16MSB;
} else {
format = o-> outfmt & XMP_FMT_UNS ?
AuFormatLinearUnsigned16LSB :
AuFormatLinearSigned16LSB;
}
}
if (o->outfmt & XMP_FMT_MONO)
channels = 1;
info.aud = AuOpenServer(server, 0, NULL, 0, NULL, NULL);
if (!info.aud) {
fprintf(stderr, "xmp: drv_nas: can't connect to server %s\n",
server ? server : "");
return XMP_ERR_DINIT;
}
for (i = 0; i < AuServerNumDevices(info.aud); i++) {
if (((AuDeviceKind(AuServerDevice(info.aud, i)) ==
AuComponentKindPhysicalOutput) &&
AuDeviceNumTracks(AuServerDevice(info.aud, i)) ==
channels)) {
device =
AuDeviceIdentifier(AuServerDevice(info.aud, i));
break;
}
}
info.da = AuGetDeviceAttributes(info.aud, device, NULL);
if (!info.da) {
fprintf(stderr, "xmp: drv_nas: can't get device attributes\n");
AuCloseServer(info.aud);
return XMP_ERR_DINIT;
}
AuDeviceGain(info.da) = AuFixedPointFromSum(gain, 0);
AuSetDeviceAttributes(info.aud, AuDeviceIdentifier(info.da),
AuCompDeviceGainMask, info.da, NULL);
info.flow = AuCreateFlow(info.aud, NULL);
if (!info.flow) {
fprintf(stderr, "xmp: drv_nas: can't create flow\n");
AuCloseServer(info.aud);
return XMP_ERR_DINIT;
}
buf_samples = rate * duration;
AuMakeElementImportClient(&element[0], rate, format, channels, AuTrue,
buf_samples,
(AuUint32) (buf_samples * watermark / 100), 0,
NULL);
AuMakeElementExportDevice(&element[1], 0, device, rate,
AuUnlimitedSamples, 0, NULL);
AuSetElements(info.aud, info.flow, AuTrue, 2, element, NULL);
AuRegisterEventHandler(info.aud, AuEventHandlerIDMask, 0, info.flow,
nas_event, (AuPointer) & info);
info.buf_size = buf_samples * channels * AuSizeofFormat(format);
info.buf = (char *)malloc(info.buf_size);
info.buf_cnt = 0;
info.data_sent = AuFalse;
info.finished = AuFalse;
AuStartFlow(info.aud, info.flow, NULL);
return xmp_smix_on(ctx);
}
static int
NAS_OpenDevice(_THIS, void *handle, const char *devname, int iscapture)
{
AuElement elms[3];
int buffer_size;
SDL_AudioFormat test_format, format;
/* Initialize all variables that we clean on shutdown */
this->hidden = (struct SDL_PrivateAudioData *)
SDL_malloc((sizeof *this->hidden));
if (this->hidden == NULL) {
return SDL_OutOfMemory();
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
/* Try for a closest match on audio format */
format = 0;
for (test_format = SDL_FirstAudioFormat(this->spec.format);
!format && test_format;) {
format = sdlformat_to_auformat(test_format);
if (format == AuNone) {
test_format = SDL_NextAudioFormat();
}
}
if (format == 0) {
NAS_CloseDevice(this);
return SDL_SetError("NAS: Couldn't find any hardware audio formats");
}
this->spec.format = test_format;
this->hidden->aud = NAS_AuOpenServer("", 0, NULL, 0, NULL, NULL);
if (this->hidden->aud == 0) {
NAS_CloseDevice(this);
return SDL_SetError("NAS: Couldn't open connection to NAS server");
}
this->hidden->dev = find_device(this, this->spec.channels);
if ((this->hidden->dev == AuNone)
|| (!(this->hidden->flow = NAS_AuCreateFlow(this->hidden->aud, 0)))) {
NAS_CloseDevice(this);
return SDL_SetError("NAS: Couldn't find a fitting device on NAS server");
}
buffer_size = this->spec.freq;
if (buffer_size < 4096)
buffer_size = 4096;
if (buffer_size > 32768)
buffer_size = 32768; /* So that the buffer won't get unmanageably big. */
/* Calculate the final parameters for this audio specification */
SDL_CalculateAudioSpec(&this->spec);
this2 = this->hidden;
AuMakeElementImportClient(elms, this->spec.freq, format,
this->spec.channels, AuTrue, buffer_size,
buffer_size / 4, 0, NULL);
AuMakeElementExportDevice(elms + 1, 0, this->hidden->dev, this->spec.freq,
AuUnlimitedSamples, 0, NULL);
NAS_AuSetElements(this->hidden->aud, this->hidden->flow, AuTrue, 2, elms,
NULL);
NAS_AuRegisterEventHandler(this->hidden->aud, AuEventHandlerIDMask, 0,
this->hidden->flow, event_handler,
(AuPointer) NULL);
NAS_AuStartFlow(this->hidden->aud, this->hidden->flow, NULL);
/* Allocate mixing buffer */
this->hidden->mixlen = this->spec.size;
this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
if (this->hidden->mixbuf == NULL) {
NAS_CloseDevice(this);
return SDL_OutOfMemory();
}
SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
/* We're ready to rock and roll. :-) */
return 0;
}
static int sound_Start(int frameCount, int samplesPerSec, int stereo0, int semaIndex0)
{
AuElement elements[2]; /* first is a client element, second is
a device output element */
AuDeviceID device; /* ID of the device to play to */
/* open the server */
DPRINTF("opening server\n");
server = AuOpenServer(NULL, 0, NULL, 0, NULL, NULL);
if(server == NULL) {
DPRINTF("failed to open audio server\n");
return false;
}
/* XXX should check the protocol version! */
/* record requested info */
semaIndex = semaIndex0;
stereo = stereo0;
sampleRate= samplesPerSec;
/* pick a device to play to */
device = choose_nas_device(server, samplesPerSec, stereo, 0);
if(device == AuNone) {
DPRINTF("no available device on the server!\n");
AuCloseServer(server);
server = NULL;
return false;
}
/* set up output parameters */
fmtBytes=2;
fmtSigned=1;
fmtStereo=stereo;
fmtIsBigendian=0;
recording=0;
/* create a flow to write on */
DPRINTF("creating flow\n");
flow = AuCreateFlow(server, NULL);
/* create client and device elements to play with */
DPRINTF("creating elements(%d,%d)\n",
frameCount, frameCount / 4);
AuMakeElementImportClient(&elements[0],
samplesPerSec,
AuFormatLinearSigned16LSB, /* XXX this should be chosen based on the platform */
stereo ? 2 : 1,
AuTrue,
2*frameCount, /* max: 2 buffers */
frameCount, /* low */
0, NULL);
AuMakeElementExportDevice(&elements[1],
0,
device,
samplesPerSec,
AuUnlimitedSamples,
0, NULL);
/* set up the flow with these elements */
AuSetElements(server, flow,
AuTrue,
2, elements,
NULL);
/* start her up */
DPRINTF("starting flow\n");
AuStartFlow(server, flow, NULL);
AuFlush(server);
/* initialize the space indication */
bytesAvail = 0;
/* arrange to be informed when events come in from the server */
aioEnable(AuServerConnectionNumber(server), 0, AIO_EXT);
aioHandle(AuServerConnectionNumber(server), handleAudioEvents, AIO_R);
return true;
}
int ao_plugin_open(ao_device *device, ao_sample_format *format)
{
ao_nas_internal *internal = (ao_nas_internal *) device->internal;
unsigned char nas_format;
AuElement elms[2];
/* get format */
switch (format->bits)
{
case 8 :
nas_format = AuFormatLinearUnsigned8;
break;
case 16 :
if (device->machine_byte_format == AO_FMT_BIG)
nas_format = AuFormatLinearSigned16MSB;
else
nas_format = AuFormatLinearSigned16LSB;
break;
default :
return 0;
}
/* open server */
internal->aud = AuOpenServer(internal->host, 0, 0, 0, 0, 0);
if (!internal->aud)
return 0; /* Could not contact NAS server */
/* find physical output device */
{
int i;
for (i = 0; i < AuServerNumDevices(internal->aud); i++)
if ((AuDeviceKind(AuServerDevice(internal->aud, i)) ==
AuComponentKindPhysicalOutput) &&
(AuDeviceNumTracks(AuServerDevice(internal->aud, i)) ==
device->output_channels))
break;
if ((i == AuServerNumDevices(internal->aud)) ||
(!(internal->flow = AuCreateFlow(internal->aud, 0)))) {
/* No physical output device found or flow creation failed. */
AuCloseServer(internal->aud);
return 0;
}
internal->dev = AuDeviceIdentifier(AuServerDevice(internal->aud, i));
}
/* set up flow */
AuMakeElementImportClient(&elms[0], format->rate,
nas_format, device->output_channels, AuTrue,
internal->buf_size, internal->buf_size / 2,
0, 0);
AuMakeElementExportDevice(&elms[1], 0, internal->dev,
format->rate, AuUnlimitedSamples, 0, 0);
AuSetElements(internal->aud, internal->flow, AuTrue, 2, elms, 0);
AuStartFlow(internal->aud, internal->flow, 0);
device->driver_byte_format = AO_FMT_NATIVE;
if(!device->inter_matrix) {
/* set up out matrix such that users are warned about > stereo playback */
if(device->output_channels<=2)
device->inter_matrix=strdup("L,R");
//else no matrix, which results in a warning
}
return 1;
}
static gboolean
gst_nas_sink_prepare (GstAudioSink * asink, GstRingBufferSpec * spec)
{
GstNasSink *sink = GST_NAS_SINK (asink);
AuElement elements[2];
AuUint32 buf_samples;
unsigned char format;
format = gst_nas_sink_sink_get_format (spec);
if (format == 0) {
GST_ELEMENT_ERROR (sink, RESOURCE, SETTINGS, (NULL),
("Unable to get format %d", spec->format));
return FALSE;
}
GST_DEBUG_OBJECT (sink, "Format: %d %d\n", spec->format, format);
sink->flow = AuGetScratchFlow (sink->audio, NULL);
if (sink->flow == 0) {
GST_DEBUG_OBJECT (sink, "couldn't get flow");
return FALSE;
}
buf_samples = spec->rate * NAS_SOUND_PORT_DURATION;
/*
spec->segsize = gst_util_uint64_scale (buf_samples * spec->bytes_per_sample,
spec->latency_time, GST_SECOND / GST_USECOND);
spec->segsize -= spec->segsize % spec->bytes_per_sample;
spec->segtotal = spec->buffer_time / spec->latency_time;
*/
spec->segsize = buf_samples * spec->bytes_per_sample;
spec->segtotal = 1;
memset (spec->silence_sample, 0, spec->bytes_per_sample);
GST_DEBUG_OBJECT (sink, "Bytes per sample %d", spec->bytes_per_sample);
GST_DEBUG_OBJECT (sink, "Rate %d Format %d tracks %d bufs %d %d/%d w %d",
spec->rate, format, spec->channels, (gint) buf_samples, spec->segsize,
spec->segtotal, spec->width);
AuMakeElementImportClient (&elements[0], /* element */
spec->rate, /* rate */
format, /* format */
spec->channels, /* number of tracks */
AuTrue, /* discart */
buf_samples, /* max samples */
(AuUint32) (buf_samples / 100 * AuSoundPortLowWaterMark),
/* low water mark */
0, /* num actions */
NULL);
sink->device = NAS_getDevice (sink->audio, spec->channels);
if (sink->device == AuNone) {
GST_DEBUG_OBJECT (sink, "no device with %i tracks found", spec->channels);
return FALSE;
}
AuMakeElementExportDevice (&elements[1], /* element */
0, /* input */
sink->device, /* device */
spec->rate, /* rate */
AuUnlimitedSamples, /* num samples */
0, /* num actions */
NULL); /* actions */
AuSetElements (sink->audio, /* server */
sink->flow, /* flow ID */
AuTrue, /* clocked */
2, /* num elements */
elements, /* elements */
NULL);
AuRegisterEventHandler (sink->audio, /* server */
AuEventHandlerIDMask, /* value mask */
0, /* type */
sink->flow, /* flow ID */
NAS_EventHandler, /* callback */
(AuPointer) sink); /* data */
AuStartFlow (sink->audio, sink->flow, NULL);
return TRUE;
}
/* 0 on error */
static int nas_createFlow(out123_handle *ao)
{
AuDeviceID device = AuNone;
AuElement elements[2];
unsigned char format;
AuUint32 buf_samples;
int i;
switch(ao->format) {
case MPG123_ENC_SIGNED_16:
default:
if (((char) *(short *)"x")=='x') /* ugly, but painless */
format = AuFormatLinearSigned16LSB; /* little endian */
else
format = AuFormatLinearSigned16MSB; /* big endian */
break;
case MPG123_ENC_UNSIGNED_8:
format = AuFormatLinearUnsigned8;
break;
case MPG123_ENC_SIGNED_8:
format = AuFormatLinearSigned8;
break;
case MPG123_ENC_ULAW_8:
format = AuFormatULAW8;
break;
}
/* look for an output device */
for (i = 0; i < AuServerNumDevices(info.aud); i++)
if (((AuDeviceKind(AuServerDevice(info.aud, i)) ==
AuComponentKindPhysicalOutput) &&
AuDeviceNumTracks(AuServerDevice(info.aud, i))
== ao->channels )) {
device = AuDeviceIdentifier(AuServerDevice(info.aud, i));
break;
}
if (device == AuNone) {
error1("Couldn't find an output device providing %d channels.", ao->channels);
return 0;
}
/* set gain */
if(ao->gain >= 0) {
info.da = AuGetDeviceAttributes(info.aud, device, NULL);
if ((info.da)!=NULL) {
AuDeviceGain(info.da) = AuFixedPointFromSum(ao->gain, 0);
AuSetDeviceAttributes(info.aud, AuDeviceIdentifier(info.da),
AuCompDeviceGainMask, info.da, NULL);
}
else
error("audio/gain: setable Volume/PCM-Level not supported");
}
if (!(info.flow = AuCreateFlow(info.aud, NULL))) {
error("Couldn't create flow");
return 0;
}
buf_samples = ao->rate * NAS_SOUND_PORT_DURATION;
AuMakeElementImportClient(&elements[0], /* element */
(unsigned short) ao->rate,
/* rate */
format, /* format */
ao->channels, /* channels */
AuTrue, /* ??? */
buf_samples, /* max samples */
(AuUint32) (buf_samples / 100
* NAS_SOUND_LOW_WATER_MARK),
/* low water mark */
0, /* num actions */
NULL); /* actions */
AuMakeElementExportDevice(&elements[1], /* element */
0, /* input */
device, /* device */
(unsigned short) ao->rate,
/* rate */
AuUnlimitedSamples, /* num samples */
0, /* num actions */
NULL); /* actions */
AuSetElements(info.aud, /* Au server */
info.flow, /* flow ID */
AuTrue, /* clocked */
2, /* num elements */
elements, /* elements */
NULL); /* return status */
AuRegisterEventHandler(info.aud, /* Au server */
AuEventHandlerIDMask, /* value mask */
0, /* type */
info.flow, /* id */
nas_eventHandler, /* callback */
(AuPointer) &info); /* data */
info.buf_size = buf_samples * ao->channels * AuSizeofFormat(format);
info.buf = (char *) malloc(info.buf_size);
if (info.buf == NULL) {
error1("Unable to allocate input/output buffer of size %ld",
(long)info.buf_size);
return 0;
}
info.buf_cnt = 0;
info.data_sent = AuFalse;
info.finished = AuFalse;
AuStartFlow(info.aud, /* Au server */
info.flow, /* id */
NULL); /* status */
return 1; /* success */
}
static int
sound_nas_play(audio_job_t aj)
{
/* stream stuff */
Lisp_Media_Stream *ms;
media_substream *mss;
/* thread stuff */
media_thread_play_state mtp;
/* device stuff */
Lisp_Object device;
Lisp_Audio_Device *lad = NULL;
sound_nas_data_t *snd = NULL;
/* nas stuff */
AuElement elms[3];
AuStatus as;
int bsize = 0;
/* subthread stuff */
sound_nas_aj_data_t _snsd, *snsd = &_snsd;
sxe_mse_volume_args _volargs, *volargs = &_volargs;
sxe_mse_rerate_args _rrargs, *rrargs = &_rrargs;
/* cache stuff */
int alloced_myself = 0;
SOUND_UNPACK_MT(aj, device, ms, mss, lad, snd, snsd->mtap);
/* refuse to do anything if the AuServer pointer is not set */
if (snd->aud == NULL) {
NAS_DEBUG_C("b0rked connection, gute Nacht!\n");
return 0;
}
/* install error handlers before anything else */
AuSetErrorHandler(snd->aud, nas_error_handler);
AuSetIOErrorHandler(snd->aud, nas_IOerror_handler);
/* find physical output device */
snsd->dev = nas_find_device(snd->aud, snsd->mtap->channels);
if (snsd->dev == AuNone ||
!(snsd->flow = AuCreateFlow(snd->aud, NULL))) {
/* No physical output device found or flow creation failed. */
NAS_DEBUG_C("no physical devices for this stream\n");
return 0;
}
/* A system call interrupted with a SIGALRM or SIGIO
comes back here */
if (SETJMP(nas_server_sig)) {
NAS_CRITICAL("Caught the lethal signal.\n");
snd->aud = NULL;
sound_nas_finish(snd);
goto uhoh;
}
/* init the snsd */
snsd->samplerate = 0;
snsd->framesize = (snsd->channels = snsd->mtap->channels)
* sizeof(int16_t);
snsd->msf = MEDIA_SAMPLE_FORMAT(sxe_msf_S16);
snsd->coe_ch_cnt = 0;
snsd->resolution =
(snsd->mtap->samplerate * MTPSTATE_REACT_TIME) / 1000000;
bsize = (snsd->resolution + NAS_FRAG_SIZE - 1) & ~(NAS_FRAG_SIZE-1);
snsd->snd = snd;
snsd->buffer_size = bsize;
snsd->writepos = snsd->readpos = 0;
snsd->overfill = snsd->underrun = 0;
/* set up flow */
AuMakeElementImportClient(elms+0, snsd->mtap->samplerate,
AuFormatLinearSigned16LSB,
snsd->mtap->channels,
AuTrue,
bsize, bsize / 2,
0, NULL);
snsd->gain = AuFixedPointFromFraction(1, 1);
AuMakeElementMultiplyConstant(elms+1, 0, snsd->gain);
AuMakeElementExportDevice(elms+2, 0, snsd->dev,
snsd->mtap->samplerate,
AuUnlimitedSamples, 0, NULL);
AuSetElements(snd->aud, snsd->flow, AuTrue, 3, elms, &as);
if (as != AuSuccess) {
NAS_DEBUG_C("play(): AuSetElements failed\n");
return 0;
}
#if 0 /* atm we insist on having stereo access */
/* the channel effect */
ADD_MEDIA_SAMPLE_EFFECT(
snsd->coe_chain, snsd->coe_ch_cnt,
MEDIA_SAMPLE_EFFECT(sxe_mse_2ch_to_1ch), NULL);
#endif
/* the volume effect */
ADD_MEDIA_SAMPLE_EFFECT(
snsd->coe_chain, snsd->coe_ch_cnt,
MEDIA_SAMPLE_EFFECT(sxe_mse_volume), volargs);
volargs->num_channels = snsd->channels;
snsd->volargs = volargs;
/* the rerate effect */
ADD_MEDIA_SAMPLE_EFFECT(
snsd->coe_chain, snsd->coe_ch_cnt,
MEDIA_SAMPLE_EFFECT(sxe_mse_rerate), rrargs);
rrargs->num_channels = snsd->channels;
rrargs->srcrate = rrargs->tgtrate = 1;
snsd->rrargs = rrargs;
AuRegisterEventHandler(snd->aud, AuEventHandlerIDMask |
AuEventHandlerTypeMask,
AuEventTypeElementNotify, snsd->flow,
nas_event_handler, (AuPointer)aj);
/* rewind the stream */
media_stream_meth(ms, rewind)(mss);
/* play chunks of the stream */
SXE_MUTEX_LOCK(&aj->mtx);
if (aj->buffer_alloc_size < SOUND_MAX_AUDIO_FRAME_SIZE) {
alloced_myself = 1;
aj->buffer = xmalloc_atomic(SOUND_MAX_AUDIO_FRAME_SIZE);
aj->buffer_alloc_size = SOUND_MAX_AUDIO_FRAME_SIZE;
}
SXE_MUTEX_UNLOCK(&aj->mtx);
snsd->mtp = MTPSTATE_STOP;
snsd->volume = -1;
audio_job_device_data(aj) = snsd;
/* prefill the buffer */
NAS_DEBUG_S("prefill the buffer: %d\n", 4*bsize);
if (!nas_fill(aj, 4*bsize))
goto uhoh;
while (aj->play_state != MTPSTATE_STOP) {
#if 0
if (aj->volume != snsd->volume) {
AuElementParameters aep;
NAS_DEBUG_S("Setting volume.\n");
snsd->volume = aj->volume;
snsd->gain = AU_FIXED_POINT_SCALE*(snsd->volume)/127;
aep.parameters[AuParmsMultiplyConstantConstant] =
snsd->gain;
aep.flow = snd->flow;
aep.element_num = 1;
aep.num_parameters = AuParmsMultiplyConstant;
AuSetElementParameters(snd->aud, 1, &aep, &as);
if (as != AuSuccess) {
NAS_DEBUG_S("Setting volume failed.\n");
}
}
#endif
#ifdef EF_USE_ASYNEQ
/* events for me audio-job? */
if (audio_job_queue(aj)) {
sound_nas_handle_aj_events(aj);
}
#endif
SXE_MUTEX_LOCK(&aj->mtx);
mtp = aj->play_state;
SXE_MUTEX_UNLOCK(&aj->mtx);
switch (mtp) {
case MTPSTATE_RUN:
if (snsd->mtp != mtp) {
NAS_DEBUG("ah, gotta work again\n");
AuStartFlow(snd->aud, snsd->flow, &as);
if (as != AuSuccess) {
NAS_DEBUG_C("play(): "
"AuStartFlow failed\n");
aj->play_state = MTPSTATE_STOP;
}
}
nas_empty_event_queue(snsd);
usleep(snsd->resolution);
break;
case MTPSTATE_PAUSE:
if (snsd->mtp != mtp) {
NAS_DEBUG("sleeping for %d\n",
snsd->resolution);
AuStopFlow(snd->aud, snsd->flow, &as);
}
usleep(snsd->resolution);
break;
case MTPSTATE_UNKNOWN:
case MTPSTATE_STOP:
case NUMBER_OF_MEDIA_THREAD_PLAY_STATES:
default:
NAS_DEBUG("ACK, quit\n");
AuStopFlow(snd->aud, snsd->flow, &as);
SXE_MUTEX_LOCK(&aj->mtx);
aj->play_state = MTPSTATE_STOP;
SXE_MUTEX_UNLOCK(&aj->mtx);
break;
}
snsd->mtp = mtp;
}
uhoh:
/* -- Close and shutdown -- */
SXE_MUTEX_LOCK(&aj->mtx);
if (alloced_myself && aj->buffer) {
xfree(aj->buffer);
}
aj->buffer = NULL;
aj->buffer_alloc_size = 0;
SXE_MUTEX_UNLOCK(&aj->mtx);
return 1;
}