gst-plugins-rs/src/rssink.c
Luis de Bethencourt aeefcefe09 Add skeleton for RsFileSink with the new structure
Doesn't write to a file yet, just prints out a message when a buffer is
received. All the skeleton is there to implement Sink children.
2016-05-15 14:07:06 +03:00

264 lines
6.9 KiB
C

#include "rssink.h"
#include <string.h>
#include <stdint.h>
typedef struct {
gchar *name;
gchar *long_name;
gchar *description;
gchar *classification;
gchar *author;
void * (*create_instance) (void);
gchar **protocols;
} ElementData;
static GHashTable *sinks;
/* Declarations for Rust code */
extern gboolean sinks_register (void *plugin);
extern GstFlowReturn sink_render (void * filesink);
extern gboolean sink_set_uri (void * filesink, const char *uri);
extern char * sink_get_uri (void * filesink);
extern gboolean sink_start (void * filesink);
extern gboolean sink_stop (void * filesink);
GST_DEBUG_CATEGORY_STATIC (gst_rs_sink_debug);
#define GST_CAT_DEFAULT gst_rs_sink_debug
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
enum
{
PROP_0,
PROP_URI
};
static void gst_rs_sink_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void gst_rs_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_rs_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_rs_sink_start (GstBaseSink * basesink);
static gboolean gst_rs_sink_stop (GstBaseSink * basesink);
static GstFlowReturn gst_rs_sink_render (GstBaseSink * sink, GstBuffer * buffer);
static GObjectClass *parent_class;
static void
gst_rs_sink_class_init (GstRsSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSinkClass *gstbasesink_class;
ElementData * data = g_hash_table_lookup (sinks, GSIZE_TO_POINTER (G_TYPE_FROM_CLASS (klass)));
g_assert (data != NULL);
gobject_class = G_OBJECT_CLASS (klass);
gstelement_class = GST_ELEMENT_CLASS (klass);
gstbasesink_class = GST_BASE_SINK_CLASS (klass);
gobject_class->set_property = gst_rs_sink_set_property;
gobject_class->get_property = gst_rs_sink_get_property;
g_object_class_install_property (gobject_class, PROP_URI,
g_param_spec_string ("uri", "URI",
"URI to read from", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
gst_element_class_set_static_metadata (gstelement_class,
data->long_name,
data->classification,
data->description,
data->author);
gst_element_class_add_static_pad_template (gstelement_class, &sink_template);
gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_rs_sink_start);
gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_rs_sink_stop);
gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_rs_sink_render);
}
static void
gst_rs_sink_init (GstRsSink * sink, GstRsSinkClass * klass)
{
ElementData * data = g_hash_table_lookup (sinks, GSIZE_TO_POINTER (G_TYPE_FROM_CLASS (klass)));
g_assert (data != NULL);
gst_base_sink_set_sync (GST_BASE_SINK (sink), FALSE);
sink->instance = data->create_instance ();
}
static void
gst_rs_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstRsSink *sink = GST_RS_SINK (object);
switch (prop_id) {
case PROP_URI:
sink_set_uri (sink->instance, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_rs_sink_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstRsSink *sink = GST_RS_SINK (object);
switch (prop_id) {
case PROP_URI:
g_value_take_string (value, sink_get_uri (sink->instance));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_rs_sink_render (GstBaseSink * basesink, GstBuffer * buffer)
{
GstRsSink *sink = GST_RS_SINK (basesink);
GstFlowReturn ret;
ret = sink_render (sink->instance);
return ret;
}
/* open the rs, necessary to go to READY state */
static gboolean
gst_rs_sink_start (GstBaseSink * basesink)
{
GstRsSink *sink = GST_RS_SINK (basesink);
return sink_start (sink->instance);
}
/* unmap and close the rs */
static gboolean
gst_rs_sink_stop (GstBaseSink * basesink)
{
GstRsSink *sink = GST_RS_SINK (basesink);
return sink_stop (sink->instance);
}
static GstURIType
gst_rs_sink_uri_get_type (GType type)
{
return GST_URI_SINK;
}
static const gchar *const *
gst_rs_sink_uri_get_protocols (GType type)
{
ElementData * data = g_hash_table_lookup (sinks, GSIZE_TO_POINTER (type));
g_assert (data != NULL);
return (const gchar * const *) data->protocols;
}
static gchar *
gst_rs_sink_uri_get_uri (GstURIHandler * handler)
{
GstRsSink *sink = GST_RS_SINK (handler);
return sink_get_uri (sink->instance);
}
static gboolean
gst_rs_sink_uri_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** err)
{
GstRsSink *sink = GST_RS_SINK (handler);
if (!sink_set_uri (sink->instance, uri)) {
g_set_error (err, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
"Can't handle URI '%s'", uri);
return FALSE;
}
return TRUE;
}
static void
gst_rs_sink_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_rs_sink_uri_get_type;
iface->get_protocols = gst_rs_sink_uri_get_protocols;
iface->get_uri = gst_rs_sink_uri_get_uri;
iface->set_uri = gst_rs_sink_uri_set_uri;
}
gboolean
gst_rs_sink_plugin_init (GstPlugin * plugin)
{
sinks = g_hash_table_new (g_direct_hash, g_direct_equal);
GST_DEBUG_CATEGORY_INIT (gst_rs_sink_debug, "rssink", 0, "rssink element");
parent_class = g_type_class_ref (GST_TYPE_BASE_SINK);
return sinks_register (plugin);
}
gboolean
gst_rs_sink_register (GstPlugin * plugin, const gchar *name, const gchar * long_name, const gchar * description, const gchar * classification, const gchar * author, GstRank rank, void * (*create_instance) (void), const gchar *protocols)
{
GTypeInfo type_info = {
sizeof (GstRsSinkClass),
NULL,
NULL,
(GClassInitFunc) gst_rs_sink_class_init,
NULL,
NULL,
sizeof (GstRsSink),
0,
(GInstanceInitFunc) gst_rs_sink_init
};
GInterfaceInfo iface_info = {
gst_rs_sink_uri_handler_init,
NULL,
NULL
};
GType type;
gchar *type_name;
ElementData *data;
data = g_new0 (ElementData, 1);
data->name = g_strdup (name);
data->long_name = g_strdup (long_name);
data->description = g_strdup (description);
data->classification = g_strdup (classification);
data->author = g_strdup (author);
data->create_instance = create_instance;
data->protocols = g_strsplit (protocols, ":", -1);
type_name = g_strconcat ("RsSink-", name, NULL);
type = g_type_register_static (GST_TYPE_BASE_SINK, type_name, &type_info, 0);
g_free (type_name);
g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &iface_info);
g_hash_table_insert (sinks, GSIZE_TO_POINTER (type), data);
if (!gst_element_register (plugin, name, rank, type))
return FALSE;
return TRUE;
}