mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-30 04:00:37 +00:00
55cd61de48
Original commit message from CVS: - removing some trailing commas in enums to please C90 only compilers (AIX, Forte, ...) ('should' fix #143290) should/could we compile gst with -ansi -pedantic to catch those in the build-bots ?
374 lines
10 KiB
C
374 lines
10 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstshaper.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 <stdlib.h>
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include "gstshaper.h"
|
|
|
|
GST_DEBUG_CATEGORY_STATIC (gst_shaper_debug);
|
|
#define GST_CAT_DEFAULT gst_shaper_debug
|
|
|
|
GstElementDetails gst_shaper_details = GST_ELEMENT_DETAILS ("Shaper",
|
|
"Generic",
|
|
"Synchronizes streams on different pads",
|
|
"Wim Taymans <wim.taymans@chello.be>");
|
|
|
|
|
|
/* Shaper signals and args */
|
|
enum
|
|
{
|
|
/* FILL ME */
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
enum
|
|
{
|
|
ARG_0,
|
|
ARG_POLICY,
|
|
ARG_SILENT,
|
|
ARG_LAST_MESSAGE
|
|
};
|
|
|
|
typedef struct
|
|
{
|
|
GstPad *sinkpad;
|
|
GstPad *srcpad;
|
|
GstBuffer *buffer;
|
|
}
|
|
GstShaperConnection;
|
|
|
|
GstStaticPadTemplate shaper_src_template = GST_STATIC_PAD_TEMPLATE ("src%d",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
GstStaticPadTemplate shaper_sink_template = GST_STATIC_PAD_TEMPLATE ("sink%d",
|
|
GST_PAD_SINK,
|
|
GST_PAD_REQUEST,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
#define GST_TYPE_SHAPER_POLICY (gst_shaper_policy_get_type())
|
|
static GType
|
|
gst_shaper_policy_get_type (void)
|
|
{
|
|
static GType shaper_policy_type = 0;
|
|
static GEnumValue shaper_policy[] = {
|
|
{SHAPER_POLICY_TIMESTAMPS, "1", "sync on timestamps"},
|
|
{SHAPER_POLICY_BUFFERSIZE, "2", "sync on buffer size"},
|
|
{0, NULL, NULL},
|
|
};
|
|
|
|
if (!shaper_policy_type) {
|
|
shaper_policy_type =
|
|
g_enum_register_static ("GstShaperPolicy", shaper_policy);
|
|
}
|
|
return shaper_policy_type;
|
|
}
|
|
|
|
#define _do_init(bla) \
|
|
GST_DEBUG_CATEGORY_INIT (gst_shaper_debug, "shaper", 0, "shaper element");
|
|
|
|
GST_BOILERPLATE_FULL (GstShaper, gst_shaper, GstElement, GST_TYPE_ELEMENT,
|
|
_do_init);
|
|
|
|
static void gst_shaper_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_shaper_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static GstPad *gst_shaper_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * unused);
|
|
|
|
static void gst_shaper_loop (GstElement * element);
|
|
|
|
|
|
static void
|
|
gst_shaper_base_init (gpointer g_class)
|
|
{
|
|
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
|
|
|
|
gst_element_class_set_details (gstelement_class, &gst_shaper_details);
|
|
gst_element_class_add_pad_template (gstelement_class,
|
|
gst_static_pad_template_get (&shaper_src_template));
|
|
gst_element_class_add_pad_template (gstelement_class,
|
|
gst_static_pad_template_get (&shaper_sink_template));
|
|
}
|
|
|
|
static void
|
|
gst_shaper_class_init (GstShaperClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
GstElementClass *gstelement_class;
|
|
|
|
gobject_class = (GObjectClass *) klass;
|
|
gstelement_class = (GstElementClass *) klass;
|
|
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_POLICY,
|
|
g_param_spec_enum ("policy", "Policy", "Shaper policy",
|
|
GST_TYPE_SHAPER_POLICY, SHAPER_POLICY_TIMESTAMPS, G_PARAM_READWRITE));
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
|
|
g_param_spec_boolean ("silent", "silent", "silent",
|
|
FALSE, G_PARAM_READWRITE));
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LAST_MESSAGE,
|
|
g_param_spec_string ("last-message", "last-message", "last-message",
|
|
NULL, G_PARAM_READABLE));
|
|
|
|
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_shaper_set_property);
|
|
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_shaper_get_property);
|
|
|
|
gstelement_class->request_new_pad =
|
|
GST_DEBUG_FUNCPTR (gst_shaper_request_new_pad);
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_shaper_getcaps (GstPad * pad)
|
|
{
|
|
GstPad *otherpad;
|
|
GstShaperConnection *connection;
|
|
|
|
connection = gst_pad_get_element_private (pad);
|
|
|
|
otherpad =
|
|
(pad == connection->srcpad ? connection->sinkpad : connection->srcpad);
|
|
|
|
if (GST_PAD_PEER (otherpad)) {
|
|
return gst_pad_get_caps (GST_PAD_PEER (otherpad));
|
|
} else {
|
|
return gst_caps_new_any ();
|
|
}
|
|
}
|
|
|
|
static GList *
|
|
gst_shaper_get_internal_link (GstPad * pad)
|
|
{
|
|
GList *res = NULL;
|
|
GstShaperConnection *connection;
|
|
GstPad *otherpad;
|
|
|
|
connection = gst_pad_get_element_private (pad);
|
|
|
|
otherpad =
|
|
(pad == connection->srcpad ? connection->sinkpad : connection->srcpad);
|
|
|
|
res = g_list_prepend (res, otherpad);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstPadLinkReturn
|
|
gst_shaper_link (GstPad * pad, const GstCaps * caps)
|
|
{
|
|
GstPad *otherpad;
|
|
GstShaperConnection *connection;
|
|
|
|
connection = gst_pad_get_element_private (pad);
|
|
|
|
otherpad =
|
|
(pad == connection->srcpad ? connection->sinkpad : connection->srcpad);
|
|
|
|
return gst_pad_try_set_caps (otherpad, caps);
|
|
}
|
|
|
|
static GstShaperConnection *
|
|
gst_shaper_create_connection (GstShaper * shaper)
|
|
{
|
|
GstShaperConnection *connection;
|
|
gchar *padname;
|
|
|
|
shaper->nconnections++;
|
|
|
|
connection = g_new0 (GstShaperConnection, 1);
|
|
|
|
padname = g_strdup_printf ("sink%d", shaper->nconnections);
|
|
connection->sinkpad =
|
|
gst_pad_new_from_template (gst_static_pad_template_get
|
|
(&shaper_sink_template), padname);
|
|
g_free (padname);
|
|
gst_pad_set_getcaps_function (connection->sinkpad, gst_shaper_getcaps);
|
|
gst_pad_set_internal_link_function (connection->sinkpad,
|
|
gst_shaper_get_internal_link);
|
|
gst_pad_set_link_function (connection->sinkpad, gst_shaper_link);
|
|
gst_pad_set_element_private (connection->sinkpad, connection);
|
|
gst_element_add_pad (GST_ELEMENT (shaper), connection->sinkpad);
|
|
|
|
padname = g_strdup_printf ("src%d", shaper->nconnections);
|
|
connection->srcpad =
|
|
gst_pad_new_from_template (gst_static_pad_template_get
|
|
(&shaper_src_template), padname);
|
|
g_free (padname);
|
|
gst_pad_set_getcaps_function (connection->srcpad, gst_shaper_getcaps);
|
|
gst_pad_set_internal_link_function (connection->srcpad,
|
|
gst_shaper_get_internal_link);
|
|
gst_pad_set_link_function (connection->srcpad, gst_shaper_link);
|
|
gst_pad_set_element_private (connection->srcpad, connection);
|
|
gst_element_add_pad (GST_ELEMENT (shaper), connection->srcpad);
|
|
|
|
shaper->connections = g_slist_prepend (shaper->connections, connection);
|
|
|
|
return connection;
|
|
}
|
|
|
|
static GstPad *
|
|
gst_shaper_request_new_pad (GstElement * element, GstPadTemplate * templ,
|
|
const gchar * unused)
|
|
{
|
|
GstShaper *shaper = GST_SHAPER (element);
|
|
GstShaperConnection *connection;
|
|
|
|
connection = gst_shaper_create_connection (shaper);
|
|
|
|
return connection->sinkpad;
|
|
}
|
|
|
|
static void
|
|
gst_shaper_init (GstShaper * shaper)
|
|
{
|
|
gst_element_set_loop_function (GST_ELEMENT (shaper), gst_shaper_loop);
|
|
|
|
shaper->policy = SHAPER_POLICY_TIMESTAMPS;
|
|
shaper->connections = NULL;
|
|
shaper->nconnections = 0;
|
|
shaper->silent = FALSE;
|
|
shaper->last_message = NULL;
|
|
}
|
|
|
|
static void
|
|
gst_shaper_loop (GstElement * element)
|
|
{
|
|
GstShaper *shaper;
|
|
GSList *connections;
|
|
gboolean eos = TRUE;
|
|
GstShaperConnection *min = NULL;
|
|
|
|
shaper = GST_SHAPER (element);
|
|
|
|
/* first make sure we have a buffer on all pads */
|
|
connections = shaper->connections;
|
|
while (connections) {
|
|
GstShaperConnection *connection = (GstShaperConnection *) connections->data;
|
|
|
|
/* try to fill a connection without a buffer on a pad that is
|
|
* active */
|
|
if (connection->buffer == NULL && GST_PAD_IS_USABLE (connection->sinkpad)) {
|
|
GstBuffer *buffer;
|
|
|
|
buffer = GST_BUFFER (gst_pad_pull (connection->sinkpad));
|
|
|
|
/* events are simply pushed ASAP */
|
|
if (GST_IS_EVENT (buffer)) {
|
|
/* save event type as it will be unreffed after the next push */
|
|
GstEventType type = GST_EVENT_TYPE (buffer);
|
|
|
|
gst_pad_push (connection->srcpad, GST_DATA (buffer));
|
|
|
|
switch (type) {
|
|
/* on EOS we disable the pad so that we don't pull on
|
|
* it again and never get more data */
|
|
case GST_EVENT_EOS:
|
|
gst_pad_set_active (connection->sinkpad, FALSE);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
/* we store the buffer */
|
|
connection->buffer = buffer;
|
|
}
|
|
}
|
|
/* FIXME policy stuff goes here */
|
|
/* find connection with lowest timestamp */
|
|
if (min == NULL || (connection->buffer != NULL &&
|
|
(GST_BUFFER_TIMESTAMP (connection->buffer) <
|
|
GST_BUFFER_TIMESTAMP (min->buffer)))) {
|
|
min = connection;
|
|
}
|
|
connections = g_slist_next (connections);
|
|
}
|
|
/* if we have a connection with a buffer, push it */
|
|
if (min != NULL && min->buffer) {
|
|
gst_pad_push (min->srcpad, GST_DATA (min->buffer));
|
|
min->buffer = NULL;
|
|
/* since we pushed a buffer, it's not EOS */
|
|
eos = FALSE;
|
|
}
|
|
|
|
if (eos) {
|
|
gst_element_set_eos (element);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_shaper_set_property (GObject * object, guint prop_id, const GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstShaper *shaper;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
g_return_if_fail (GST_IS_SHAPER (object));
|
|
|
|
shaper = GST_SHAPER (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_POLICY:
|
|
shaper->policy = g_value_get_enum (value);
|
|
break;
|
|
case ARG_SILENT:
|
|
shaper->silent = g_value_get_boolean (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_shaper_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstShaper *shaper;
|
|
|
|
/* it's not null if we got it, but it might not be ours */
|
|
g_return_if_fail (GST_IS_SHAPER (object));
|
|
|
|
shaper = GST_SHAPER (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_POLICY:
|
|
g_value_set_enum (value, shaper->policy);
|
|
break;
|
|
case ARG_SILENT:
|
|
g_value_set_boolean (value, shaper->silent);
|
|
break;
|
|
case ARG_LAST_MESSAGE:
|
|
g_value_set_string (value, shaper->last_message);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|