gstreamer/sys/oss/gstosssink.c

751 lines
22 KiB
C
Raw Normal View History

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wim.taymans@chello.be>
*
* gstosssink.c:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <sys/soundcard.h>
#include <unistd.h>
#include <errno.h>
#include <gstosssink.h>
static GstElementDetails gst_osssink_details = {
"Audio Sink (OSS)",
"Sink/Audio",
"Output to a sound card via OSS",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>, "
"Wim Taymans <wim.taymans@chello.be>",
"(C) 1999",
};
static void gst_osssink_class_init (GstOssSinkClass *klass);
static void gst_osssink_init (GstOssSink *osssink);
static void gst_osssink_finalize (GObject *object);
static gboolean gst_osssink_open_audio (GstOssSink *sink);
static void gst_osssink_close_audio (GstOssSink *sink);
static gboolean gst_osssink_sync_parms (GstOssSink *osssink);
static GstElementStateReturn gst_osssink_change_state (GstElement *element);
static void gst_osssink_set_clock (GstElement *element, GstClock *clock);
static GstClock* gst_osssink_get_clock (GstElement *element);
static GstPadConnectReturn gst_osssink_sinkconnect (GstPad *pad, GstCaps *caps);
static void gst_osssink_set_property (GObject *object, guint prop_id, const GValue *value,
GParamSpec *pspec);
static void gst_osssink_get_property (GObject *object, guint prop_id, GValue *value,
GParamSpec *pspec);
static void gst_osssink_chain (GstPad *pad,GstBuffer *buf);
/* OssSink signals and args */
enum {
SIGNAL_HANDOFF,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_DEVICE,
ARG_MUTE,
ARG_FORMAT,
ARG_CHANNELS,
ARG_FREQUENCY,
ARG_FRAGMENT,
ARG_BUFFER_SIZE
/* FILL ME */
};
GST_PAD_TEMPLATE_FACTORY (osssink_sink_factory,
"sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"osssink_sink",
"audio/raw",
"format", GST_PROPS_STRING ("int"), /* hack */
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_LIST (
GST_PROPS_BOOLEAN (FALSE),
GST_PROPS_BOOLEAN (TRUE)
),
"width", GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"depth", GST_PROPS_LIST (
GST_PROPS_INT (8),
GST_PROPS_INT (16)
),
"rate", GST_PROPS_INT_RANGE (1000, 48000),
"channels", GST_PROPS_INT_RANGE (1, 2)
)
);
#define GST_TYPE_OSSSINK_CHANNELS (gst_osssink_channels_get_type())
static GType
gst_osssink_channels_get_type(void) {
static GType osssink_channels_type = 0;
static GEnumValue osssink_channels[] = {
{0, "0", "Silence"},
{1, "1", "Mono"},
{2, "2", "Stereo"},
{0, NULL, NULL},
};
if (!osssink_channels_type) {
osssink_channels_type = g_enum_register_static("GstAudiosinkChannels", osssink_channels);
}
return osssink_channels_type;
}
static GstElementClass *parent_class = NULL;
static guint gst_osssink_signals[LAST_SIGNAL] = { 0 };
GType
gst_osssink_get_type (void)
{
static GType osssink_type = 0;
if (!osssink_type) {
static const GTypeInfo osssink_info = {
sizeof(GstOssSinkClass),
NULL,
NULL,
(GClassInitFunc)gst_osssink_class_init,
NULL,
NULL,
sizeof(GstOssSink),
0,
(GInstanceInitFunc)gst_osssink_init,
};
osssink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstOssSink", &osssink_info, 0);
}
return osssink_type;
}
static GstBufferPool*
gst_osssink_get_bufferpool (GstPad *pad)
{
GstOssSink *oss;
oss = GST_OSSSINK (gst_pad_get_parent(pad));
return oss->sinkpool;
}
static void
gst_osssink_finalize (GObject *object)
{
GstOssSink *osssink = (GstOssSink *) object;
g_free (osssink->device);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_osssink_class_init (GstOssSinkClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEVICE,
g_param_spec_string("device","device","device",
"/dev/dsp",G_PARAM_READWRITE)); /* CHECKME! */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_MUTE,
g_param_spec_boolean("mute","mute","mute",
TRUE,G_PARAM_READWRITE));
/* it would be nice to show format in symbolic form, oh well */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FORMAT,
g_param_spec_int ("format","format","format",
0, G_MAXINT, AFMT_S16_LE, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNELS,
g_param_spec_enum("channels","channels","channels",
GST_TYPE_OSSSINK_CHANNELS,2,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FREQUENCY,
g_param_spec_int("frequency","frequency","frequency",
0,G_MAXINT,44100,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_FRAGMENT,
g_param_spec_int("fragment","fragment","fragment",
0,G_MAXINT,6,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_BUFFER_SIZE,
g_param_spec_int("buffer_size","buffer_size","buffer_size",
0,G_MAXINT,4096,G_PARAM_READWRITE));
gst_osssink_signals[SIGNAL_HANDOFF] =
g_signal_new("handoff",G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET(GstOssSinkClass,handoff), NULL, NULL,
g_cclosure_marshal_VOID__VOID,G_TYPE_NONE,0);
gobject_class->set_property = gst_osssink_set_property;
gobject_class->get_property = gst_osssink_get_property;
gobject_class->finalize = gst_osssink_finalize;
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_osssink_change_state);
}
static GstClockTime
gst_osssink_get_time (GstClock *clock, gpointer data)
{
GstOssSink *osssink = GST_OSSSINK (data);
gint delay;
if (!osssink->bps)
return 0;
ioctl (osssink->fd, SNDCTL_DSP_GETODELAY, &delay);
return osssink->offset + (osssink->handled - delay) * 1000000LL / osssink->bps;
}
static void
gst_osssink_init (GstOssSink *osssink)
{
osssink->sinkpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (osssink_sink_factory), "sink");
gst_element_add_pad (GST_ELEMENT (osssink), osssink->sinkpad);
gst_pad_set_connect_function (osssink->sinkpad, gst_osssink_sinkconnect);
gst_pad_set_bufferpool_function (osssink->sinkpad, gst_osssink_get_bufferpool);
gst_pad_set_chain_function (osssink->sinkpad, gst_osssink_chain);
osssink->device = g_strdup ("/dev/dsp");
osssink->fd = -1;
osssink->channels = 1;
osssink->frequency = 11025;
osssink->fragment = 6;
/* AFMT_*_BE not available on all OSS includes (e.g. FBSD) */
#ifdef WORDS_BIGENDIAN
osssink->format = AFMT_S16_BE;
#else
osssink->format = AFMT_S16_LE;
#endif /* WORDS_BIGENDIAN */
/* gst_clock_register (osssink->clock, GST_OBJECT (osssink)); */
osssink->bufsize = 4096;
osssink->offset = -1LL;
osssink->handled = 0LL;
/* 6 buffers per chunk by default */
osssink->sinkpool = gst_buffer_pool_get_default (osssink->bufsize, 6);
osssink->provided_clock = NULL;
osssink->provided_clock = GST_CLOCK (gst_oss_clock_new ("ossclock", gst_osssink_get_time, osssink));
GST_ELEMENT (osssink)->setclockfunc = gst_osssink_set_clock;
GST_ELEMENT (osssink)->getclockfunc = gst_osssink_get_clock;
GST_FLAG_SET (osssink, GST_ELEMENT_THREAD_SUGGESTED);
GST_FLAG_SET (osssink, GST_ELEMENT_EVENT_AWARE);
}
static GstPadConnectReturn
gst_osssink_sinkconnect (GstPad *pad, GstCaps *caps)
{
gint law, endianness, width, depth;
gboolean sign;
gint format = -1;
GstOssSink *osssink = GST_OSSSINK (gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps))
return GST_PAD_CONNECT_DELAYED;
gst_caps_get_int (caps, "width", &width);
gst_caps_get_int (caps, "depth", &depth);
if (width != depth)
return GST_PAD_CONNECT_REFUSED;
/* laws 1 and 2 are 1 bps anyway */
osssink->bps = 1;
gst_caps_get_int (caps, "law", &law);
gst_caps_get_int (caps, "endianness", &endianness);
gst_caps_get_boolean (caps, "signed", &sign);
if (law == 0) {
if (width == 16) {
if (sign == TRUE) {
if (endianness == G_LITTLE_ENDIAN)
format = AFMT_S16_LE;
else if (endianness == G_BIG_ENDIAN)
format = AFMT_S16_BE;
}
else {
if (endianness == G_LITTLE_ENDIAN)
format = AFMT_U16_LE;
else if (endianness == G_BIG_ENDIAN)
format = AFMT_U16_BE;
}
osssink->bps = 2;
}
else if (width == 8) {
if (sign == TRUE) {
format = AFMT_S8;
}
else {
format = AFMT_U8;
}
osssink->bps = 1;
}
} else if (law == 1) {
format = AFMT_MU_LAW;
} else if (law == 2) {
format = AFMT_A_LAW;
} else {
g_critical ("unknown law");
return GST_PAD_CONNECT_REFUSED;
}
if (format == -1)
return GST_PAD_CONNECT_REFUSED;
osssink->format = format;
gst_caps_get_int (caps, "channels", &osssink->channels);
gst_caps_get_int (caps, "rate", &osssink->frequency);
osssink->bps *= osssink->channels;
osssink->bps *= osssink->frequency;
if (!gst_osssink_sync_parms (osssink)) {
return GST_PAD_CONNECT_REFUSED;
}
return GST_PAD_CONNECT_OK;
}
static gboolean
gst_osssink_sync_parms (GstOssSink *osssink)
{
audio_buf_info ospace;
int frag;
gint target_format;
gint target_channels;
gint target_frequency;
GObject *object;
g_return_val_if_fail (osssink != NULL, FALSE);
g_return_val_if_fail (GST_IS_OSSSINK (osssink), FALSE);
if (osssink->fd == -1)
return FALSE;
if (osssink->fragment >> 16)
frag = osssink->fragment;
else
frag = 0x7FFF0000 | osssink->fragment;
GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: trying to set sound card to %dHz %d bit %s (%08x fragment)",
osssink->frequency, osssink->format,
(osssink->channels == 2) ? "stereo" : "mono",frag);
ioctl (osssink->fd, SNDCTL_DSP_SETFRAGMENT, &frag);
ioctl (osssink->fd, SNDCTL_DSP_RESET, 0);
target_format = osssink->format;
target_channels = osssink->channels;
target_frequency = osssink->frequency;
ioctl (osssink->fd, SNDCTL_DSP_SETFMT, &osssink->format);
ioctl (osssink->fd, SNDCTL_DSP_CHANNELS, &osssink->channels);
ioctl (osssink->fd, SNDCTL_DSP_SPEED, &osssink->frequency);
ioctl (osssink->fd, SNDCTL_DSP_GETBLKSIZE, &osssink->fragment);
ioctl (osssink->fd, SNDCTL_DSP_GETOSPACE, &ospace);
GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: set sound card to %dHz %d bit %s (%d bytes buffer, %08x fragment)",
osssink->frequency, osssink->format,
(osssink->channels == 2) ? "stereo" : "mono", ospace.bytes, osssink->fragment);
object = G_OBJECT (osssink);
g_object_freeze_notify (object);
g_object_notify (object, "channels");
g_object_notify (object, "frequency");
g_object_notify (object, "fragment");
g_object_notify (object, "format");
g_object_thaw_notify (object);
osssink->fragment_time = (1000000 * osssink->fragment) / osssink->bps;
GST_INFO (GST_CAT_PLUGIN_INFO, "fragment time %u %llu\n", osssink->bps, osssink->fragment_time);
if (target_format != osssink->format ||
target_channels != osssink->channels ||
target_frequency != osssink->frequency)
{
g_warning ("could not configure oss with required parameters, enjoy the noise :)");
/* we could eventually return FALSE here, or just do some additional tests
* to see that the frequencies don't differ too much etc.. */
}
return TRUE;
}
static GstClock*
gst_osssink_get_clock (GstElement *element)
{
GstOssSink *osssink;
osssink = GST_OSSSINK (element);
return GST_CLOCK (osssink->provided_clock);
}
static void
gst_osssink_set_clock (GstElement *element, GstClock *clock)
{
GstOssSink *osssink;
osssink = GST_OSSSINK (element);
osssink->clock = clock;
}
static void
gst_osssink_chain (GstPad *pad, GstBuffer *buf)
{
GstOssSink *osssink;
GstClockTime buftime;
/* this has to be an audio buffer */
osssink = GST_OSSSINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT (buf)) {
switch (GST_EVENT_TYPE (buf)) {
case GST_EVENT_EOS:
ioctl (osssink->fd, SNDCTL_DSP_SYNC);
gst_pad_event_default (pad, GST_EVENT (buf));
return;
default:
return;
}
}
buftime = GST_BUFFER_TIMESTAMP (buf);
if (!osssink->bps) {
gst_buffer_unref (buf);
gst_element_error (GST_ELEMENT (osssink), "capsnego was never performed, unknown data type");
}
if (osssink->fd >= 0) {
if (!osssink->mute) {
guchar *data = GST_BUFFER_DATA (buf);
gint size = GST_BUFFER_SIZE (buf);
/* gint frag = osssink->fragment; <-- unused, for reason see above */
if (osssink->clock) {
/* FIXME, NEW_MEDIA/DISCONT?. Try to get our start point */
if (osssink->offset == -1LL && buftime != -1LL) {
/* g_print ("%lld %lld %lld\n", osssink->offset, buftime, gst_clock_get_time (osssink->clock)); */
osssink->offset = buftime;
osssink->handled = 0;
gst_element_clock_wait (GST_ELEMENT (osssink), osssink->clock, buftime);
}
/* FIXME: reverted wtay's patch.
The way that's commented out isn't working on BE machines.
I guess it should be sample accurate and not capped inbetween.
while (size) {
gint tosend = MIN (size, frag);
write (osssink->fd, data, tosend);
data += tosend;
size -= tosend;
osssink->handled += tosend;
} */
write (osssink->fd, data, size);
}
/* no clock, try to be as fast as possible */
else {
audio_buf_info ospace;
ioctl (osssink->fd, SNDCTL_DSP_GETOSPACE, &ospace);
if (ospace.bytes >= size) {
write (osssink->fd, data, size);
}
osssink->handled += size;
}
}
}
gst_buffer_unref (buf);
}
static void
gst_osssink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstOssSink *osssink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_OSSSINK (object));
osssink = GST_OSSSINK (object);
switch (prop_id) {
case ARG_DEVICE:
/* disallow changing the device while it is opened
get_property("device") should return the right one */
if (!GST_FLAG_IS_SET (osssink, GST_OSSSINK_OPEN))
{
g_free (osssink->device);
osssink->device = g_strdup (g_value_get_string (value));
g_object_notify (object, "device");
}
break;
case ARG_MUTE:
osssink->mute = g_value_get_boolean (value);
g_object_notify (G_OBJECT (osssink), "mute");
break;
case ARG_FORMAT:
osssink->format = g_value_get_int (value);
gst_osssink_sync_parms (osssink);
break;
case ARG_CHANNELS:
osssink->channels = g_value_get_enum (value);
gst_osssink_sync_parms (osssink);
break;
case ARG_FREQUENCY:
osssink->frequency = g_value_get_int (value);
gst_osssink_sync_parms (osssink);
break;
case ARG_FRAGMENT:
osssink->fragment = g_value_get_int (value);
gst_osssink_sync_parms (osssink);
break;
case ARG_BUFFER_SIZE:
if (osssink->bufsize == g_value_get_int (value)) break;
osssink->bufsize = g_value_get_int (value);
osssink->sinkpool = gst_buffer_pool_get_default (osssink->bufsize, 6);
g_object_notify (object, "buffer_size");
break;
default:
break;
}
}
static void
gst_osssink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstOssSink *osssink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_OSSSINK (object));
osssink = GST_OSSSINK (object);
switch (prop_id) {
case ARG_DEVICE:
g_value_set_string (value, osssink->device);
break;
case ARG_MUTE:
g_value_set_boolean (value, osssink->mute);
break;
case ARG_FORMAT:
g_value_set_int (value, osssink->format);
break;
case ARG_CHANNELS:
g_value_set_enum (value, osssink->channels);
break;
case ARG_FREQUENCY:
g_value_set_int (value, osssink->frequency);
break;
case ARG_FRAGMENT:
g_value_set_int (value, osssink->fragment);
break;
case ARG_BUFFER_SIZE:
g_value_set_int (value, osssink->bufsize);
break;
default:
break;
}
}
static gboolean
gst_osssink_open_audio (GstOssSink *sink)
{
gint caps;
g_return_val_if_fail (sink->fd == -1, FALSE);
GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: attempting to open sound device");
/* first try to open the sound card */
sink->fd = open(sink->device, O_WRONLY | O_NONBLOCK);
if (errno == EBUSY) {
g_warning ("osssink: unable to open the sound device (in use ?)\n");
return FALSE;
}
/* re-open the sound device in blocking mode */
close(sink->fd);
sink->fd = open(sink->device, O_WRONLY);
/* if we have it, set the default parameters and go have fun */
if (sink->fd >= 0) {
/* set card state */
ioctl(sink->fd, SNDCTL_DSP_GETCAPS, &caps);
GST_INFO(GST_CAT_PLUGIN_INFO, "osssink: Capabilities %08x", caps);
if (caps & DSP_CAP_DUPLEX) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Full duplex");
if (caps & DSP_CAP_REALTIME) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Realtime");
if (caps & DSP_CAP_BATCH) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Batch");
if (caps & DSP_CAP_COPROC) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Has coprocessor");
if (caps & DSP_CAP_TRIGGER) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Trigger");
if (caps & DSP_CAP_MMAP) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Direct access");
#ifdef DSP_CAP_MULTI
if (caps & DSP_CAP_MULTI) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Multiple open");
#endif /* DSP_CAP_MULTI */
#ifdef DSP_CAP_BIND
if (caps & DSP_CAP_BIND) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Channel binding");
#endif /* DSP_CAP_BIND */
ioctl(sink->fd, SNDCTL_DSP_GETFMTS, &caps);
GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: Formats %08x", caps);
if (caps & AFMT_MU_LAW) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: MU_LAW");
if (caps & AFMT_A_LAW) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: A_LAW");
if (caps & AFMT_IMA_ADPCM) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: IMA_ADPCM");
if (caps & AFMT_U8) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: U8");
if (caps & AFMT_S16_LE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: S16_LE");
if (caps & AFMT_S16_BE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: S16_BE");
if (caps & AFMT_S8) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: S8");
if (caps & AFMT_U16_LE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: U16_LE");
if (caps & AFMT_U16_BE) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: U16_BE");
if (caps & AFMT_MPEG) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: MPEG");
#ifdef AFMT_AC3
if (caps & AFMT_AC3) GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: AC3");
#endif
GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: opened audio (%s) with fd=%d", sink->device, sink->fd);
GST_FLAG_SET (sink, GST_OSSSINK_OPEN);
return TRUE;
}
return FALSE;
}
static void
gst_osssink_close_audio (GstOssSink *sink)
{
if (sink->fd < 0) return;
close(sink->fd);
sink->fd = -1;
GST_FLAG_UNSET (sink, GST_OSSSINK_OPEN);
GST_INFO (GST_CAT_PLUGIN_INFO, "osssink: closed sound device");
}
static GstElementStateReturn
gst_osssink_change_state (GstElement *element)
{
GstOssSink *osssink;
g_return_val_if_fail (GST_IS_OSSSINK (element), FALSE);
osssink = GST_OSSSINK (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (!GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN)) {
if (!gst_osssink_open_audio (osssink)) {
return GST_STATE_FAILURE;
}
}
break;
case GST_STATE_READY_TO_PAUSED:
osssink->offset = -1LL;
break;
case GST_STATE_PAUSED_TO_PLAYING:
/* gst_clock_adjust (osssink->clock, osssink->offset - gst_clock_get_time (osssink->clock)); */
break;
case GST_STATE_PLAYING_TO_PAUSED:
{
if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN)) {
if (osssink->bps) {
GstClockTime time;
audio_buf_info ospace;
gint queued;
ioctl (osssink->fd, SNDCTL_DSP_GETOSPACE, &ospace);
ioctl (osssink->fd, SNDCTL_DSP_RESET, 0);
queued = (ospace.fragstotal * ospace.fragsize) - ospace.bytes;
time = osssink->offset + (osssink->handled - queued) * 1000000LL / osssink->bps;
//gst_clock_adjust (osssink->clock, time - gst_clock_get_time (osssink->clock));
}
else {
ioctl (osssink->fd, SNDCTL_DSP_RESET, 0);
}
}
break;
}
case GST_STATE_PAUSED_TO_READY:
if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN))
ioctl (osssink->fd, SNDCTL_DSP_RESET, 0);
break;
case GST_STATE_READY_TO_NULL:
if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN))
gst_osssink_close_audio (osssink);
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
gboolean
gst_osssink_factory_init (GstPlugin *plugin)
{
GstElementFactory *factory;
factory = gst_element_factory_new ("osssink", GST_TYPE_OSSSINK, &gst_osssink_details);
g_return_val_if_fail (factory != NULL, FALSE);
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (osssink_sink_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}