gstreamer/ext/esd/esdsink.c

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/* GStreamer
* Copyright (C) <2001> Richard Boulton <richard-gst@tartarus.org>
*
* Based on example.c:
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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 "esdsink.h"
#include <esd.h>
/* elementfactory information */
static GstElementDetails esdsink_details = {
"Esound audio sink",
"Sink/Audio",
"Plays audio to an esound server",
VERSION,
"Richard Boulton <richard-gst@tartarus.org>",
"(C) 2001",
};
/* Signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_MUTE,
ARG_DEPTH,
ARG_CHANNELS,
ARG_RATE,
ARG_HOST,
};
GST_PAD_TEMPLATE_FACTORY (sink_factory,
"sink", /* the name of the pads */
GST_PAD_SINK, /* type of the pad */
GST_PAD_ALWAYS, /* ALWAYS/SOMETIMES */
GST_CAPS_NEW (
"esdsink_sink8", /* the name of the caps */
"audio/raw", /* the mime type of the caps */
/* Properties follow: */
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"width", GST_PROPS_INT (8),
"depth", GST_PROPS_INT (8),
"rate", GST_PROPS_INT_RANGE (8000, 96000),
"channels", GST_PROPS_LIST (GST_PROPS_INT (1), GST_PROPS_INT (2))
),
GST_CAPS_NEW (
"esdsink_sink16", /* the name of the caps */
"audio/raw", /* the mime type of the caps */
/* Properties follow: */
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN (TRUE),
"width", GST_PROPS_INT (16),
"depth", GST_PROPS_INT (16),
"rate", GST_PROPS_INT_RANGE (8000, 96000),
"channels", GST_PROPS_LIST (GST_PROPS_INT (1), GST_PROPS_INT (2))
)
);
static void gst_esdsink_class_init (GstEsdsinkClass *klass);
static void gst_esdsink_init (GstEsdsink *esdsink);
static gboolean gst_esdsink_open_audio (GstEsdsink *sink);
static void gst_esdsink_close_audio (GstEsdsink *sink);
static GstElementStateReturn gst_esdsink_change_state (GstElement *element);
static gboolean gst_esdsink_sync_parms (GstEsdsink *esdsink);
static GstPadConnectReturn gst_esdsink_sinkconnect (GstPad *pad, GstCaps *caps);
static void gst_esdsink_chain (GstPad *pad, GstBuffer *buf);
static void gst_esdsink_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_esdsink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
#define GST_TYPE_ESDSINK_DEPTHS (gst_esdsink_depths_get_type())
static GType
gst_esdsink_depths_get_type (void)
{
static GType esdsink_depths_type = 0;
static GEnumValue esdsink_depths[] = {
{8, "8", "8 Bits"},
{16, "16", "16 Bits"},
{0, NULL, NULL},
};
if (!esdsink_depths_type) {
esdsink_depths_type = g_enum_register_static("GstEsdsinkDepths", esdsink_depths);
}
return esdsink_depths_type;
}
#define GST_TYPE_ESDSINK_CHANNELS (gst_esdsink_channels_get_type())
static GType
gst_esdsink_channels_get_type (void)
{
static GType esdsink_channels_type = 0;
static GEnumValue esdsink_channels[] = {
{1, "1", "Mono"},
{2, "2", "Stereo"},
{0, NULL, NULL},
};
if (!esdsink_channels_type) {
esdsink_channels_type = g_enum_register_static("GstEsdsinkChannels", esdsink_channels);
}
return esdsink_channels_type;
}
static GstElementClass *parent_class = NULL;
/*static guint gst_esdsink_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_esdsink_get_type (void)
{
static GType esdsink_type = 0;
if (!esdsink_type) {
static const GTypeInfo esdsink_info = {
sizeof(GstEsdsinkClass), NULL,
NULL,
(GClassInitFunc)gst_esdsink_class_init,
NULL,
NULL,
sizeof(GstEsdsink),
0,
(GInstanceInitFunc)gst_esdsink_init,
};
esdsink_type = g_type_register_static(GST_TYPE_ELEMENT, "GstEsdsink", &esdsink_info, 0);
}
return esdsink_type;
}
static void
gst_esdsink_class_init (GstEsdsinkClass *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_MUTE,
g_param_spec_boolean("mute","mute","mute",
TRUE,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_DEPTH,
g_param_spec_enum("depth","depth","depth",
GST_TYPE_ESDSINK_DEPTHS,16,G_PARAM_READWRITE)); /* CHECKME! */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_CHANNELS,
g_param_spec_enum("channels","channels","channels",
GST_TYPE_ESDSINK_CHANNELS,2,G_PARAM_READWRITE)); /* CHECKME! */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_RATE,
g_param_spec_int("frequency","frequency","frequency",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE)); /* CHECKME */
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_HOST,
g_param_spec_string("host","host","host",
NULL, G_PARAM_READWRITE)); /* CHECKME */
gobject_class->set_property = gst_esdsink_set_property;
gobject_class->get_property = gst_esdsink_get_property;
gstelement_class->change_state = gst_esdsink_change_state;
}
static void
gst_esdsink_init(GstEsdsink *esdsink)
{
esdsink->sinkpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (sink_factory), "sink");
gst_element_add_pad(GST_ELEMENT(esdsink), esdsink->sinkpad);
gst_pad_set_chain_function(esdsink->sinkpad, GST_DEBUG_FUNCPTR(gst_esdsink_chain));
gst_pad_set_connect_function(esdsink->sinkpad, gst_esdsink_sinkconnect);
esdsink->mute = FALSE;
esdsink->fd = -1;
/* FIXME: get default from somewhere better than just putting them inline. */
esdsink->format = 16;
esdsink->depth = 16;
esdsink->channels = 2;
esdsink->frequency = 44100;
esdsink->host = NULL;
}
static gboolean
gst_esdsink_sync_parms (GstEsdsink *esdsink)
{
g_return_val_if_fail (esdsink != NULL, FALSE);
g_return_val_if_fail (GST_IS_ESDSINK (esdsink), FALSE);
if (esdsink->fd == -1) return TRUE;
/* Need to set fd to use new parameters: only way to do this is to reopen. */
gst_esdsink_close_audio (esdsink);
return gst_esdsink_open_audio (esdsink);
}
static GstPadConnectReturn
gst_esdsink_sinkconnect (GstPad *pad, GstCaps *caps)
{
GstEsdsink *esdsink;
esdsink = GST_ESDSINK (gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps))
return GST_PAD_CONNECT_DELAYED;
gst_caps_get_int (caps, "depth", &esdsink->depth);
gst_caps_get_int (caps, "channels", &esdsink->channels);
gst_caps_get_int (caps, "rate", &esdsink->frequency);
if (gst_esdsink_sync_parms (esdsink))
return GST_PAD_CONNECT_OK;
return GST_PAD_CONNECT_REFUSED;
}
static void
gst_esdsink_chain (GstPad *pad, GstBuffer *buf)
{
GstEsdsink *esdsink;
g_return_if_fail(pad != NULL);
g_return_if_fail(GST_IS_PAD(pad));
g_return_if_fail(buf != NULL);
esdsink = GST_ESDSINK (gst_pad_get_parent (pad));
if (GST_BUFFER_DATA (buf) != NULL) {
if (!esdsink->mute && esdsink->fd >= 0) {
GST_DEBUG (0, "esdsink: fd=%d data=%p size=%d",
esdsink->fd, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
write (esdsink->fd, GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
}
}
gst_buffer_unref (buf);
}
static void
gst_esdsink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstEsdsink *esdsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_ESDSINK(object));
esdsink = GST_ESDSINK(object);
switch (prop_id) {
case ARG_MUTE:
esdsink->mute = g_value_get_boolean (value);
break;
case ARG_DEPTH:
esdsink->depth = g_value_get_enum (value);
gst_esdsink_sync_parms (esdsink);
break;
case ARG_CHANNELS:
esdsink->channels = g_value_get_enum (value);
gst_esdsink_sync_parms (esdsink);
break;
case ARG_RATE:
esdsink->frequency = g_value_get_int (value);
gst_esdsink_sync_parms (esdsink);
break;
case ARG_HOST:
if (esdsink->host != NULL) g_free(esdsink->host);
if (g_value_get_string (value) == NULL)
esdsink->host = NULL;
else
esdsink->host = g_strdup (g_value_get_string (value));
break;
default:
break;
}
}
static void
gst_esdsink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstEsdsink *esdsink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_ESDSINK(object));
esdsink = GST_ESDSINK(object);
switch (prop_id) {
case ARG_MUTE:
g_value_set_boolean (value, esdsink->mute);
break;
case ARG_DEPTH:
g_value_set_enum (value, esdsink->depth);
break;
case ARG_CHANNELS:
g_value_set_enum (value, esdsink->channels);
break;
case ARG_RATE:
g_value_set_int (value, esdsink->frequency);
break;
case ARG_HOST:
g_value_set_string (value, esdsink->host);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
factory = gst_element_factory_new("esdsink", GST_TYPE_ESDSINK,
&esdsink_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_element_factory_add_pad_template(factory, GST_PAD_TEMPLATE_GET (sink_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"esdsink",
plugin_init
};
static gboolean
gst_esdsink_open_audio (GstEsdsink *sink)
{
/* Name used by esound for this connection. */
const char * connname = "GStreamer";
/* Bitmap describing audio format. */
esd_format_t esdformat = ESD_STREAM | ESD_PLAY;
g_return_val_if_fail (sink->fd == -1, FALSE);
if (sink->depth == 16) esdformat |= ESD_BITS16;
else if (sink->depth == 8) esdformat |= ESD_BITS8;
else {
GST_DEBUG (0, "esdsink: invalid bit depth (%d)", sink->depth);
return FALSE;
}
if (sink->channels == 2) esdformat |= ESD_STEREO;
else if (sink->channels == 1) esdformat |= ESD_MONO;
else {
GST_DEBUG (0, "esdsink: invalid number of channels (%d)", sink->channels);
return FALSE;
}
GST_DEBUG (0, "esdsink: attempting to open connection to esound server");
sink->fd = esd_play_stream_fallback(esdformat, sink->frequency, sink->host, connname);
if ( sink->fd < 0 ) {
GST_DEBUG (0, "esdsink: can't open connection to esound server");
return FALSE;
}
GST_FLAG_SET (sink, GST_ESDSINK_OPEN);
return TRUE;
}
static void
gst_esdsink_close_audio (GstEsdsink *sink)
{
if (sink->fd < 0) return;
close(sink->fd);
sink->fd = -1;
GST_FLAG_UNSET (sink, GST_ESDSINK_OPEN);
GST_DEBUG (0, "esdsink: closed sound device");
}
static GstElementStateReturn
gst_esdsink_change_state (GstElement *element)
{
g_return_val_if_fail (GST_IS_ESDSINK (element), FALSE);
/* if going down into NULL state, close the fd if it's open */
if (GST_STATE_PENDING (element) == GST_STATE_NULL) {
if (GST_FLAG_IS_SET (element, GST_ESDSINK_OPEN))
gst_esdsink_close_audio (GST_ESDSINK (element));
/* otherwise (READY or higher) we need to open the fd */
} else {
if (!GST_FLAG_IS_SET (element, GST_ESDSINK_OPEN)) {
if (!gst_esdsink_open_audio (GST_ESDSINK (element)))
return GST_STATE_FAILURE;
}
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}