Commit ef7b89f3 authored by Edgard Gusmão Lima's avatar Edgard Gusmão Lima

I'm too lazy to comment this

Original commit message from CVS:
freeze plugin ported to 0.10 by Renato Filho <renato.filho@indt.org.br>
parent 1ca7ef34
2006-02-13 Edgard Lima <edgard.lima@indt.org.br>
* configure.ac:
* gst/freeze/Makefile.am:
* gst/freeze/gstfreeze.c:
* gst/freeze/gstfreeze.h:
* gst/freeze/FAQ:
freeze plugin ported to 0.10 by
Renato Filho <renato.filho@indt.org.br>
2006-02-10 Tim-Philipp Müller <tim at centricular dot net>
* configure.ac:
......
common @ c30611ac
Subproject commit 58567e5519f2d00a4592491db1a6e8302993279e
Subproject commit c30611ac38336030fed6d258c6e558cc537adbc5
......@@ -281,6 +281,7 @@ AC_SUBST(GST_PLUGIN_LDFLAGS)
dnl these are all the gst plug-ins, compilable without additional libs
GST_PLUGINS_ALL="\
cdxaparse \
freeze \
speed \
qtdemux \
tta \
......@@ -653,6 +654,7 @@ Makefile
gst-plugins-bad.spec
gst/Makefile
gst/cdxaparse/Makefile
gst/freeze/Makefile
gst/speed/Makefile
gst/qtdemux/Makefile
gst/tta/Makefile
......
example usage
gst-launch-0.10 --gst-debug=*freeze*:5 -mvt filesrc location=gnome-home.png blocksize=4135 ! pngdec ! freeze ! ffmpegcolorspace ! xvimagesink
plugin_LTLIBRARIES = libgstfreeze.la
libgstfreeze_la_SOURCES = gstfreeze.c
libgstfreeze_la_CFLAGS = $(GST_CFLAGS)
libgstfreeze_la_LIBADD = ${GST_LIBS}
libgstfreeze_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = gstfreeze.h
EXTRA_DIST = FAQ
/* gst-freeze -- Source freezer
* Copyright (C) 2005 Gergely Nagy <gergely.nagy@neteyes.hu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1, as published by the Free Software Foundation.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gstfreeze.h"
#define GST_CAT_DEFAULT freeze_debug
GST_DEBUG_CATEGORY (freeze_debug);
enum
{
ARG_0,
ARG_MAX_BUFFERS,
};
static GstElementDetails freeze_details = GST_ELEMENT_DETAILS ("Stream freezer",
"Generic",
"Makes a stream from buffers of data",
"Gergely Nagy <gergely.nagy@neteyes.hu>,"
" Renato Filho <renato.filho@indt.org.br>");
static GstStaticPadTemplate gst_freeze_src_template =
GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate gst_freeze_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void gst_freeze_dispose (GObject * object);
static void gst_freeze_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_freeze_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_freeze_chain (GstPad * pad, GstBuffer * buffer);
static GstStateChangeReturn gst_freeze_change_state (GstElement * element,
GstStateChange transition);
static GstFlowReturn gst_freeze_play (GstPad * pad, GstBuffer * buff);
static void gst_freeze_loop (GstPad * pad);
static gboolean gst_freeze_sink_activate (GstPad * sinkpad);
static gboolean gst_freeze_sink_activate_pull (GstPad * sinkpad,
gboolean active);
static gboolean gst_freeze_sink_event (GstPad * pad, GstEvent * event);
GST_BOILERPLATE (GstFreeze, gst_freeze, GstElement, GST_TYPE_ELEMENT)
static void gst_freeze_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_set_details (element_class, &freeze_details);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_freeze_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_freeze_src_template));
}
static void
gst_freeze_class_init (GstFreezeClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
element_class->change_state = gst_freeze_change_state;
object_class->set_property = gst_freeze_set_property;
object_class->get_property = gst_freeze_get_property;
g_object_class_install_property
(object_class, ARG_MAX_BUFFERS,
g_param_spec_uint ("max-buffers", "max-buffers",
"Maximum number of buffers", 0, G_MAXUINT, 1, G_PARAM_READWRITE));
object_class->dispose = gst_freeze_dispose;
}
static void
gst_freeze_init (GstFreeze * freeze, GstFreezeClass * klass)
{
freeze->sinkpad = gst_pad_new_from_template (gst_static_pad_template_get
(&gst_freeze_sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (freeze), freeze->sinkpad);
gst_pad_set_activate_function (freeze->sinkpad, gst_freeze_sink_activate);
gst_pad_set_activatepull_function (freeze->sinkpad,
gst_freeze_sink_activate_pull);
gst_pad_set_chain_function (freeze->sinkpad, gst_freeze_chain);
gst_pad_set_getcaps_function (freeze->sinkpad, gst_pad_proxy_getcaps);
freeze->srcpad = gst_pad_new_from_template (gst_static_pad_template_get
(&gst_freeze_src_template), "src");
gst_element_add_pad (GST_ELEMENT (freeze), freeze->srcpad);
gst_pad_set_getcaps_function (freeze->srcpad, gst_pad_proxy_getcaps);
gst_pad_set_event_function (freeze->sinkpad, gst_freeze_sink_event);
freeze->timestamp_offset = 0;
freeze->running_time = 0;
freeze->buffers = NULL;
freeze->current = NULL;
freeze->max_buffers = 1;
}
static void
gst_freeze_dispose (GObject * object)
{
guint i;
GstFreeze *freeze = GST_FREEZE (object);
if (freeze->buffers != NULL) {
for (i = 0; i < g_list_length (freeze->buffers); i++)
gst_buffer_unref (GST_BUFFER (g_list_nth_data (freeze->buffers, i)));
g_list_free (freeze->buffers);
freeze->buffers = NULL;
freeze->current = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_freeze_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstFreeze *freeze = GST_FREEZE (object);
switch (prop_id) {
case ARG_MAX_BUFFERS:
freeze->max_buffers = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_freeze_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstFreeze *freeze = GST_FREEZE (object);
switch (prop_id) {
case ARG_MAX_BUFFERS:
g_value_set_uint (value, freeze->max_buffers);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_freeze_chain (GstPad * pad, GstBuffer * buffer)
{
return gst_freeze_play (pad, buffer);
}
static GstStateChangeReturn
gst_freeze_change_state (GstElement * element, GstStateChange transition)
{
GstFreeze *freeze = GST_FREEZE (element);
GstStateChangeReturn return_val = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_NULL_TO_READY:
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
freeze->timestamp_offset = freeze->running_time = 0;
break;
default:
break;
}
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return_val =
GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
case GST_STATE_CHANGE_READY_TO_NULL:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
freeze->timestamp_offset = freeze->running_time = 0;
break;
default:
break;
}
return return_val;
}
static GstFlowReturn
gst_freeze_play (GstPad * pad, GstBuffer * buff)
{
GstFreeze *freeze;
guint64 cur_offset;
GstFlowReturn ret;
freeze = GST_FREEZE (gst_pad_get_parent (pad));
cur_offset = freeze->offset;
if (!buff) {
ret =
gst_pad_pull_range (GST_PAD (freeze->sinkpad), freeze->offset, 4096,
&buff);
if (ret != GST_FLOW_OK) {
gst_object_unref (freeze);
return ret;
}
freeze->offset += GST_BUFFER_SIZE (buff);
}
if (g_list_length (freeze->buffers) < freeze->max_buffers ||
freeze->max_buffers == 0) {
freeze->buffers = g_list_append (freeze->buffers, buff);
GST_DEBUG_OBJECT (freeze, "accepted buffer %u",
g_list_length (freeze->buffers) - 1);
} else {
gst_buffer_unref (buff);
}
if (freeze->current != NULL) {
GST_DEBUG_OBJECT (freeze, "switching to next buffer");
freeze->current = freeze->current->next;
}
if (freeze->current == NULL) {
if (freeze->max_buffers > 1)
GST_DEBUG_OBJECT (freeze, "restarting the loop");
freeze->current = freeze->buffers;
}
GST_BUFFER_TIMESTAMP (freeze->current->data) = freeze->timestamp_offset +
freeze->running_time;
freeze->running_time += GST_BUFFER_DURATION (freeze->current->data);
gst_buffer_ref (freeze->current->data);
gst_pad_push (freeze->srcpad, freeze->current->data);
gst_object_unref (freeze);
return GST_FLOW_OK;
}
static void
gst_freeze_loop (GstPad * pad)
{
gst_freeze_play (pad, NULL);
}
static gboolean
gst_freeze_sink_activate (GstPad * sinkpad)
{
GstFreeze *freeze;
freeze = GST_FREEZE (GST_PAD_PARENT (sinkpad));
if (gst_pad_check_pull_range (sinkpad)) {
return gst_pad_activate_pull (sinkpad, TRUE);
} else {
return gst_pad_activate_push (sinkpad, TRUE);
}
}
static gboolean
gst_freeze_sink_activate_pull (GstPad * sinkpad, gboolean active)
{
gboolean result;
if (active) {
/* if we have a scheduler we can start the task */
result = gst_pad_start_task (sinkpad,
(GstTaskFunction) gst_freeze_loop, sinkpad);
} else {
result = gst_pad_stop_task (sinkpad);
}
return result;
}
static gboolean
gst_freeze_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret = TRUE;
GstFreeze *freeze = GST_FREEZE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
GST_DEBUG_OBJECT (freeze, "EOS on sink pad %s",
gst_pad_get_name (GST_PAD (freeze->sinkpad)));
gst_event_unref (event);
break;
default:
ret = gst_pad_event_default (GST_PAD (freeze->sinkpad), event);
break;
}
gst_object_unref (freeze);
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (freeze_debug, "freeze", 0, "Stream freezer");
return gst_element_register (plugin, "freeze", GST_RANK_NONE,
GST_TYPE_FREEZE);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"freeze",
"Stream freezer",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN);
/*
* Local variables:
* mode: c
* file-style: k&r
* c-basic-offset: 2
* arch-tag: fb0ee62b-cf74-46c0-8e62-93b58bacc0ed
* End:
*/
/* gst-freeze -- Source freezer
* Copyright (C) 2005 Gergely Nagy <gergely.nagy@neteyes.hu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1, as published by the Free Software Foundation.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*/
#ifndef __GST_FREEZE_H__
#define __GST_FREEZE_H__ 1
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_FREEZE (gst_freeze_get_type ())
#define GST_FREEZE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST (obj, GST_TYPE_FREEZE, GstFreeze))
#define GST_FREEZE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST (klass, GST_TYPE_FREEZE, GstFreeze))
#define GST_IS_FREEZE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE (obj, GST_TYPE_FREEZE))
#define GST_IS_FREEZE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE (klass, GST_TYPE_FREEZE))
typedef struct _GstFreeze GstFreeze;
typedef struct _GstFreezeClass GstFreezeClass;
struct _GstFreeze
{
GstElement element;
GstPad *sinkpad, *srcpad;
GList *buffers;
GList *current;
guint max_buffers;
gint64 timestamp_offset;
gint64 offset;
GstClockTime running_time;
};
struct _GstFreezeClass
{
GstElementClass parent_class;
};
GType gst_freeze_get_type (void);
G_END_DECLS
#endif
/*
* Local variables:
* mode: c
* file-style: k&r
* c-basic-offset: 2
* arch-tag: 559a2214-86a1-4c2f-b497-bdcc5f82acf1
* End:
*/
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