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gstreamer/sys/oss/gstosssink.c
Wim Taymans a8b166e3e4 - Don't misuse fragment property for storing the fragment size 
Original commit message from CVS:
- Don't misuse fragment property for storing the fragment size
- Better property descriptions
- correctly calculate fragment_time
2002-09-02 19:22:35 +00:00

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/* 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 GstClockTime gst_osssink_get_time (GstClock *clock, gpointer data);
static const GstFormat* gst_osssink_get_formats (GstPad *pad);
static gboolean gst_osssink_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value);
static const GstPadQueryType* gst_osssink_get_query_types (GstPad *pad);
static gboolean gst_osssink_query (GstElement *element, GstPadQueryType type,
GstFormat *format, gint64 *value);
static gboolean gst_osssink_sink_query (GstPad *pad, GstPadQueryType type,
GstFormat *format, gint64 *value);
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,
ARG_SYNC
/* 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;
}
#define GST_TYPE_OSSSINK_FORMAT (gst_osssink_format_get_type())
static GType
gst_osssink_format_get_type(void) {
static GType osssink_format_type = 0;
static GEnumValue osssink_format[] = {
{AFMT_MU_LAW, G_STRINGIFY(AFMT_MU_LAW), "mulaw"},
{AFMT_A_LAW, G_STRINGIFY(AFMT_A_LAW), "alaw"},
{AFMT_IMA_ADPCM, G_STRINGIFY(AFMT_IMA_ADPCM), "IMA ADPCM"},
{AFMT_U8, G_STRINGIFY(AFMT_U8), "Unsigned 8 bits"},
{AFMT_S16_LE, G_STRINGIFY(AFMT_S16_LE), "Signed 16 bits little endian"},
{AFMT_S16_BE, G_STRINGIFY(AFMT_S16_BE), "Signed 16 bits big endian"},
{AFMT_S8, G_STRINGIFY(AFMT_S8), "Signed 8 bits"},
{AFMT_U16_LE, G_STRINGIFY(AFMT_U16_LE), "Unsigned 16 bits little endian"},
{AFMT_U16_BE, G_STRINGIFY(AFMT_U16_BE), "Unsigned 16 bits big endian"},
{AFMT_MPEG, G_STRINGIFY(AFMT_MPEG), "MPEG"},
{AFMT_AC3, G_STRINGIFY(AFMT_AC3), "AC3"},
{0, NULL, NULL},
};
if (!osssink_format_type) {
osssink_format_type = g_enum_register_static("GstAudiosinkFormat", osssink_format);
}
return osssink_format_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));
/* 6 buffers per chunk by default */
if (!oss->sinkpool)
oss->sinkpool = gst_buffer_pool_get_default (oss->bufsize, 6);
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", "The device to use for output",
"/dev/dsp", G_PARAM_READWRITE)); /* CHECKME! */
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MUTE,
g_param_spec_boolean ("mute", "Mute", "Mute the audio",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SYNC,
g_param_spec_boolean ("sync", "Sync", "If syncing on timestamps should be enabled",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FORMAT,
g_param_spec_enum ("format", "Format", "The format the device is configured for",
GST_TYPE_OSSSINK_FORMAT, AFMT_S16_LE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CHANNELS,
g_param_spec_enum ("channels", "Channels", "The number of channels used for playback",
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", "The frequency of the device",
0, 48000, 44100, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_FRAGMENT,
g_param_spec_int ("fragment", "Fragment",
"The fragment as 0xMMMMSSSS (MMMM = total fragments, 2^SSSS = fragment size)",
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", "The 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);
gstelement_class->query = GST_DEBUG_FUNCPTR (gst_osssink_query);
}
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_convert_function (osssink->sinkpad, gst_osssink_convert);
gst_pad_set_query_function (osssink->sinkpad, gst_osssink_sink_query);
gst_pad_set_query_type_function (osssink->sinkpad, gst_osssink_get_query_types);
gst_pad_set_formats_function (osssink->sinkpad, gst_osssink_get_formats);
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 */
osssink->bufsize = 4096;
osssink->bps = 0;
osssink->resync = FALSE;
osssink->sync = TRUE;
osssink->sinkpool = NULL;
osssink->provided_clock = GST_CLOCK (gst_oss_clock_new ("ossclock", gst_osssink_get_time, osssink));
osssink->handled = 0;
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, 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", &osssink->width);
gst_caps_get_int (caps, "depth", &depth);
if (osssink->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 (osssink->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 (osssink->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;
gint fragscale, frag_ln;
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_size);
ioctl (osssink->fd, SNDCTL_DSP_GETOSPACE, &ospace);
/* calculate new fragment using a poor man's logarithm function */
fragscale = 1;
frag_ln = 0;
while (fragscale < ospace.fragsize) {
fragscale <<= 1;
frag_ln++;
}
osssink->fragment = ospace.fragstotal << 16 | frag_ln;
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 = (GST_SECOND * osssink->fragment_size) / 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 inline gint64
gst_osssink_get_delay (GstOssSink *osssink)
{
gint delay = 0;
if (osssink->fd == -1)
return 0;
if (ioctl (osssink->fd, SNDCTL_DSP_GETODELAY, &delay) < 0) {
audio_buf_info info;
if (ioctl (osssink->fd, SNDCTL_DSP_GETOSPACE, &info) < 0) {
delay = 0;
}
else {
delay = (info.fragstotal * info.fragsize) - info.bytes;
}
}
return delay;
}
static GstClockTime
gst_osssink_get_time (GstClock *clock, gpointer data)
{
GstOssSink *osssink = GST_OSSSINK (data);
gint delay;
GstClockTime res;
if (!osssink->bps)
return 0;
delay = gst_osssink_get_delay (osssink);
/* sometimes delay is bigger than the number of bytes sent to the device, which screws
* up this calculation, we assume that everything is still in the device then */
if (((guint64)delay) > osssink->handled) {
delay = osssink->handled;
}
res = (osssink->handled - delay) * GST_SECOND / osssink->bps;
return res;
}
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)) {
GstEvent *event = GST_EVENT (buf);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
ioctl (osssink->fd, SNDCTL_DSP_SYNC);
gst_oss_clock_set_active (osssink->provided_clock, FALSE);
gst_pad_event_default (pad, event);
return;
case GST_EVENT_NEW_MEDIA:
g_print ("new media\n");
break;
case GST_EVENT_DISCONTINUOUS:
{
gint64 value;
ioctl (osssink->fd, SNDCTL_DSP_RESET);
if (gst_event_discont_get_value (event, GST_FORMAT_TIME, &value)) {
if (!gst_clock_handle_discont (osssink->clock, value))
gst_oss_clock_set_active (osssink->provided_clock, FALSE);
osssink->handled = 0;
}
osssink->resync = TRUE;
break;
}
default:
gst_pad_event_default (pad, event);
return;
}
gst_event_unref (event);
return;
}
if (!osssink->bps) {
gst_buffer_unref (buf);
gst_element_error (GST_ELEMENT (osssink), "capsnego was never performed, unknown data type");
return;
}
buftime = GST_BUFFER_TIMESTAMP (buf);
if (osssink->fd >= 0) {
if (!osssink->mute) {
guchar *data = GST_BUFFER_DATA (buf);
gint size = GST_BUFFER_SIZE (buf);
if (osssink->clock) {
gint delay = 0;
gint64 queued;
GstClockTimeDiff jitter;
delay = gst_osssink_get_delay (osssink);
queued = delay * GST_SECOND / osssink->bps;
if (osssink->resync && osssink->sync) {
gst_element_clock_wait (GST_ELEMENT (osssink), osssink->clock,
buftime - queued, &jitter);
if (jitter >= 0) {
gst_clock_handle_discont (osssink->clock, buftime - queued + jitter);
write (osssink->fd, data, size);
gst_oss_clock_set_active (osssink->provided_clock, TRUE);
osssink->resync = FALSE;
osssink->handled += size;
}
}
else {
write (osssink->fd, data, size);
osssink->handled += 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);
}
}
}
}
gst_buffer_unref (buf);
}
static const GstFormat*
gst_osssink_get_formats (GstPad *pad)
{
static const GstFormat formats[] = {
GST_FORMAT_TIME,
GST_FORMAT_UNITS,
GST_FORMAT_BYTES,
0
};
return formats;
}
static gboolean
gst_osssink_convert (GstPad *pad, GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value)
{
gboolean res = TRUE;
GstOssSink *osssink;
if (src_format == *dest_format) {
*dest_value = src_value;
return TRUE;
}
osssink = GST_OSSSINK (gst_pad_get_parent (pad));
if (osssink->bps == 0 || osssink->channels == 0 || osssink->width == 0)
return FALSE;
switch (src_format) {
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_TIME;
case GST_FORMAT_TIME:
*dest_value = src_value * GST_SECOND / osssink->bps;
break;
case GST_FORMAT_UNITS:
*dest_value = src_value / (osssink->channels * osssink->width);
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_BYTES;
case GST_FORMAT_BYTES:
*dest_value = src_value * osssink->bps / GST_SECOND;
break;
case GST_FORMAT_UNITS:
*dest_value = src_value * osssink->frequency / GST_SECOND;
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_UNITS:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
*dest_format = GST_FORMAT_TIME;
case GST_FORMAT_TIME:
*dest_value = src_value * GST_SECOND / osssink->frequency;
break;
case GST_FORMAT_BYTES:
*dest_value = src_value * osssink->channels * osssink->width;
break;
default:
res = FALSE;
}
break;
default:
res = FALSE;
}
return res;
}
static const GstPadQueryType*
gst_osssink_get_query_types (GstPad *pad)
{
static const GstPadQueryType query_types[] = {
GST_PAD_QUERY_LATENCY,
GST_PAD_QUERY_POSITION,
0,
};
return query_types;
}
static gboolean
gst_osssink_sink_query (GstPad *pad, GstPadQueryType type, GstFormat *format, gint64 *value)
{
gboolean res = TRUE;
GstOssSink *osssink;
osssink = GST_OSSSINK (gst_pad_get_parent (pad));
switch (type) {
case GST_PAD_QUERY_LATENCY:
if (!gst_osssink_convert (pad,
GST_FORMAT_BYTES, gst_osssink_get_delay (osssink),
format, value))
{
res = FALSE;
}
break;
case GST_PAD_QUERY_POSITION:
if (!gst_osssink_convert (pad,
GST_FORMAT_TIME, gst_clock_get_time (osssink->provided_clock),
format, value))
{
res = FALSE;
}
break;
default:
res = gst_pad_query (gst_pad_get_peer (osssink->sinkpad), type, format, value);
break;
}
return res;
}
static gboolean
gst_osssink_query (GstElement *element, GstPadQueryType type, GstFormat *format, gint64 *value)
{
GstOssSink *osssink = GST_OSSSINK (element);
return gst_osssink_sink_query (osssink->sinkpad, type, format, value);
}
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_enum (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;
case ARG_SYNC:
osssink->sync = g_value_get_boolean (value);
g_object_notify (G_OBJECT (osssink), "sync");
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_enum (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;
case ARG_SYNC:
g_value_set_boolean (value, osssink->sync);
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 (sink->fd < 0) {
g_warning ("osssink: unable to open the sound device (errno=%d)\n", errno);
return FALSE;
}
/* we have it, set the default parameters and go have fun */
/* 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;
}
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:
break;
case GST_STATE_PAUSED_TO_PLAYING:
osssink->resync = TRUE;
break;
case GST_STATE_PLAYING_TO_PAUSED:
{
if (GST_FLAG_IS_SET (element, GST_OSSSINK_OPEN))
ioctl (osssink->fd, SNDCTL_DSP_RESET, 0);
gst_oss_clock_set_active (osssink->provided_clock, FALSE);
osssink->resync = TRUE;
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;
}
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