Commit c6dafad1 authored by David Schleef's avatar David Schleef
Browse files

efence: remove plugin

Valgrind is much more useful these days.
parent 3c292543
......@@ -202,7 +202,6 @@
<xi:include href="xml/plugin-deinterlace.xml" />
<xi:include href="xml/plugin-directsound.xml" />
<xi:include href="xml/plugin-dv.xml" />
<xi:include href="xml/plugin-efence.xml" />
<xi:include href="xml/plugin-equalizer.xml" />
<xi:include href="xml/plugin-effectv.xml" />
<xi:include href="xml/plugin-flac.xml" />
......
<plugin>
<name>efence</name>
<description>This element converts a stream of normal GStreamer buffers into a stream of buffers that are allocated in such a way that out-of-bounds access to data in the buffer is more likely to cause segmentation faults. This allocation method is very similar to the debugging tool &quot;Electric Fence&quot;.</description>
<filename>../../gst/debugutils/.libs/libgstefence.so</filename>
<basename>libgstefence.so</basename>
<version>0.10.30.1</version>
<license>LGPL</license>
<source>gst-plugins-good</source>
<package>GStreamer Good Plug-ins git</package>
<origin>Unknown package origin</origin>
<elements>
<element>
<name>efence</name>
<longname>Electric Fence</longname>
<class>Testing</class>
<description>This element converts a stream of normal GStreamer buffers into a stream of buffers that are allocated in such a way that out-of-bounds access to data in the buffer is more likely to cause segmentation faults. This allocation method is very similar to the debugging tool &quot;Electric Fence&quot;.</description>
<author>David A. Schleef &lt;ds@schleef.org&gt;</author>
<pads>
<caps>
<name>sink</name>
<direction>sink</direction>
<presence>always</presence>
<details>ANY</details>
</caps>
<caps>
<name>src</name>
<direction>source</direction>
<presence>always</presence>
<details>ANY</details>
</caps>
</pads>
</element>
</elements>
</plugin>
\ No newline at end of file
if GST_HAVE_MMAP
#EFENCE_PLUGIN=libgstefence.la
EFENCE_PLUGIN=
else
EFENCE_PLUGIN=
endif
plugin_LTLIBRARIES = $(EFENCE_PLUGIN) libgstdebug.la libgstnavigationtest.la
plugin_LTLIBRARIES = libgstdebug.la libgstnavigationtest.la
noinst_HEADERS = \
cpureport.h \
efence.h \
gstcapsdebug.h \
gstcapssetter.h \
gstnavigationtest.h \
......@@ -19,12 +12,6 @@ noinst_HEADERS = \
progressreport.h \
tests.h
#libgstefence_la_SOURCES = efence.c
#libgstefence_la_CFLAGS = $(GST_CFLAGS)
#libgstefence_la_LIBADD = $(GST_LIBS)
#libgstefence_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
#libgstefence_la_LIBTOOLFLAGS = --tag=disable-static
libgstnavigationtest_la_SOURCES = gstnavigationtest.c
libgstnavigationtest_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) \
$(GST_PLUGINS_BASE_CFLAGS)
......
/*
* GStreamer
* Copyright (C) 1999-2001 Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2002 David A. Schleef <ds@schleef.org>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include "efence.h"
#ifndef MAP_ANONYMOUS
#ifdef MAP_ANON
#define MAP_ANONYMOUS MAP_ANON
#else
/* assume we don't need it */
#define MAP_ANONYMOUS 0
#endif
#endif
GST_DEBUG_CATEGORY_STATIC (gst_efence_debug);
#define GST_CAT_DEFAULT gst_efence_debug
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_FENCE_TOP
};
static GstStaticPadTemplate gst_efence_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate gst_efence_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static void gst_efence_base_init (gpointer g_class);
static void gst_efence_class_init (GstEFenceClass * klass);
static void gst_efence_init (GstEFence * filter);
static void gst_efence_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_efence_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstFlowReturn gst_efence_chain (GstPad * pad, GstBuffer * buf);
static GstFlowReturn gst_efence_getrange (GstPad * pad, guint64 offset,
guint length, GstBuffer ** buffer);
static gboolean gst_efence_checkgetrange (GstPad * pad);
static gboolean gst_efence_activate_src_pull (GstPad * pad, gboolean active);
static GstElementClass *parent_class = NULL;
typedef struct _GstMetaFenced
{
GstMeta meta;
void *region;
unsigned int length;
} GstMetaFenced;
static const GstMetaInfo *
gst_meta_fenced_get_info (void)
{
static const GstMetaInfo *meta_fenced_info = NULL;
if (meta_fenced_info == NULL) {
meta_fenced_info = gst_meta_register ("GstMetaFenced", "GstMetaFenced",
sizeof (GstMetaFenced),
(GstMetaInitFunction) NULL,
(GstMetaFreeFunction) NULL,
(GstMetaCopyFunction) NULL, (GstMetaTransformFunction) NULL);
}
return meta_fenced_info;
}
#define GST_META_FENCED_GET(buf) ((GstMetaFenced *)gst_buffer_get_meta(buf,gst_meta_fenced_get_info()))
#define GST_META_FENCED_ADD(buf) ((GstMetaFenced *)gst_buffer_add_meta(buf,gst_meta_fenced_get_info(),NULL))
static void gst_fenced_buffer_dispose (GstBuffer * buf);
static GstBuffer *gst_fenced_buffer_copy (const GstBuffer * buffer);
static void *gst_fenced_buffer_alloc (GstBuffer * buffer, unsigned int length,
gboolean fence_top);
#if 0
static GstFlowReturn gst_efence_buffer_alloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf);
#endif
GType
gst_gst_efence_get_type (void)
{
static GType plugin_type = 0;
if (!plugin_type) {
static const GTypeInfo plugin_info = {
sizeof (GstEFenceClass),
gst_efence_base_init,
NULL,
(GClassInitFunc) gst_efence_class_init,
NULL,
NULL,
sizeof (GstEFence),
0,
(GInstanceInitFunc) gst_efence_init,
};
plugin_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstEFence", &plugin_info, 0);
}
return plugin_type;
}
static void
gst_efence_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_efence_sink_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_efence_src_factory));
gst_element_class_set_details_simple (element_class, "Electric Fence",
"Testing",
"This element converts a stream of normal GStreamer buffers into a "
"stream of buffers that are allocated in such a way that out-of-bounds "
"access to data in the buffer is more likely to cause segmentation "
"faults. This allocation method is very similar to the debugging tool "
"\"Electric Fence\".", "David A. Schleef <ds@schleef.org>");
}
/* initialize the plugin's class */
static void
gst_efence_class_init (GstEFenceClass * klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_efence_set_property;
gobject_class->get_property = gst_efence_get_property;
g_object_class_install_property (gobject_class, ARG_FENCE_TOP,
g_param_spec_boolean ("fence-top", "Fence Top",
"Align buffers with top of fenced region", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
/* initialize the new element
* instantiate pads and add them to element
* set functions
* initialize structure
*/
static void
gst_efence_init (GstEFence * filter)
{
filter->sinkpad =
gst_pad_new_from_static_template (&gst_efence_sink_factory, "sink");
gst_pad_set_getcaps_function (filter->sinkpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
gst_pad_set_setcaps_function (filter->sinkpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
gst_pad_set_chain_function (filter->sinkpad,
GST_DEBUG_FUNCPTR (gst_efence_chain));
#if 0
gst_pad_set_bufferalloc_function (filter->sinkpad,
GST_DEBUG_FUNCPTR (gst_efence_buffer_alloc));
#endif
gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
filter->srcpad =
gst_pad_new_from_static_template (&gst_efence_src_factory, "src");
gst_pad_set_getcaps_function (filter->srcpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
gst_pad_set_setcaps_function (filter->srcpad,
GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
gst_pad_set_checkgetrange_function (filter->srcpad,
GST_DEBUG_FUNCPTR (gst_efence_checkgetrange));
gst_pad_set_getrange_function (filter->srcpad,
GST_DEBUG_FUNCPTR (gst_efence_getrange));
gst_pad_set_activatepull_function (filter->srcpad,
GST_DEBUG_FUNCPTR (gst_efence_activate_src_pull));
gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
filter->fence_top = TRUE;
}
/* chain function
* this function does the actual processing
*/
static GstFlowReturn
gst_efence_chain (GstPad * pad, GstBuffer * buffer)
{
GstEFence *efence;
GstBuffer *copy;
efence = GST_EFENCE (GST_OBJECT_PARENT (pad));
g_return_val_if_fail (GST_IS_EFENCE (efence), GST_FLOW_ERROR);
#if 0
if (GST_IS_FENCED_BUFFER (buffer)) {
GST_DEBUG_OBJECT (efence, "Passing on existing fenced buffer with caps %"
GST_PTR_FORMAT, GST_BUFFER_CAPS (buffer));
return gst_pad_push (efence->srcpad, buffer);
}
#endif
copy = (GstBuffer *) gst_fenced_buffer_copy (buffer);
GST_DEBUG_OBJECT (efence, "Pushing newly fenced buffer with caps %"
GST_PTR_FORMAT ", data=%p, size=%u", GST_BUFFER_CAPS (copy),
GST_BUFFER_DATA (copy), GST_BUFFER_SIZE (copy));
gst_buffer_unref (buffer);
return gst_pad_push (efence->srcpad, copy);
}
static GstFlowReturn
gst_efence_getrange (GstPad * pad, guint64 offset,
guint length, GstBuffer ** buffer)
{
GstEFence *efence;
GstFlowReturn ret;
GstBuffer *ownbuf;
GstPad *peer;
efence = GST_EFENCE (GST_OBJECT_PARENT (pad));
peer = gst_pad_get_peer (efence->sinkpad);
if (!peer)
return GST_FLOW_NOT_LINKED;
if ((ret = gst_pad_get_range (peer, offset, length, buffer)) != GST_FLOW_OK)
goto beach;
ownbuf = (GstBuffer *) gst_fenced_buffer_copy (*buffer);
gst_buffer_unref ((GstBuffer *) * buffer);
*buffer = ownbuf;
beach:
gst_object_unref (peer);
return ret;
}
static gboolean
gst_efence_checkgetrange (GstPad * pad)
{
GstEFence *efence = GST_EFENCE (GST_OBJECT_PARENT (pad));
return gst_pad_check_pull_range (efence->sinkpad);
}
static gboolean
gst_efence_activate_src_pull (GstPad * pad, gboolean active)
{
GstEFence *efence = GST_EFENCE (GST_OBJECT_PARENT (pad));
return gst_pad_activate_pull (efence->sinkpad, active);
}
#if 0
static GstFlowReturn
gst_efence_buffer_alloc (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf)
{
GstBuffer *buffer;
GstEFence *efence;
g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_PAD (pad), GST_FLOW_ERROR);
efence = GST_EFENCE (GST_OBJECT_PARENT (pad));
buffer = (GstBuffer *) gst_mini_object_new (GST_TYPE_FENCED_BUFFER);
GST_BUFFER_DATA (buffer) = gst_fenced_buffer_alloc (buffer, size,
efence->fence_top);
GST_BUFFER_SIZE (buffer) = size;
GST_BUFFER_OFFSET (buffer) = offset;
if (caps)
gst_buffer_set_caps (buffer, caps);
*buf = buffer;
GST_DEBUG_OBJECT (efence, "Allocated buffer of size %u, caps: %"
GST_PTR_FORMAT, GST_BUFFER_SIZE (buffer), GST_BUFFER_CAPS (buffer));
return GST_FLOW_OK;
}
#endif
static void
gst_efence_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstEFence *filter;
g_return_if_fail (GST_IS_EFENCE (object));
filter = GST_EFENCE (object);
switch (prop_id) {
case ARG_FENCE_TOP:
filter->fence_top = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_efence_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstEFence *filter;
g_return_if_fail (GST_IS_EFENCE (object));
filter = GST_EFENCE (object);
switch (prop_id) {
case ARG_FENCE_TOP:
g_value_set_boolean (value, filter->fence_top);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* entry point to initialize the plug-in
* initialize the plug-in itself
* register the element factories and pad templates
* register the features
*/
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "efence", GST_RANK_NONE, GST_TYPE_EFENCE))
return FALSE;
GST_DEBUG_CATEGORY_INIT (gst_efence_debug, "efence", 0,
"Debug output from the efence element");
/* plugin initialisation succeeded */
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"efence",
"This element converts a stream of normal GStreamer buffers into a "
"stream of buffers that are allocated in such a way that out-of-bounds "
"access to data in the buffer is more likely to cause segmentation "
"faults. This allocation method is very similar to the debugging tool "
"\"Electric Fence\".",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
static void
gst_fenced_buffer_dispose (GstBuffer * buffer)
{
GstMetaFenced *meta;
meta = GST_META_FENCED_GET (buffer);
GST_DEBUG ("free buffer=%p", buffer);
/* free our data */
if (GST_BUFFER_DATA (buffer)) {
GST_DEBUG ("free region %p %d", meta->region, meta->length);
munmap (meta->region, meta->length);
}
}
static GstBuffer *
gst_fenced_buffer_copy (const GstBuffer * buffer)
{
GstBuffer *copy;
void *ptr;
guint mask;
g_return_val_if_fail (buffer != NULL, NULL);
/* create a fresh new buffer */
copy = gst_buffer_new ();
/* we simply copy everything from our parent */
ptr = gst_fenced_buffer_alloc (copy, GST_BUFFER_SIZE (buffer), TRUE);
memcpy (ptr, GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer));
/* copy relevant flags */
mask = GST_BUFFER_FLAG_PREROLL | GST_BUFFER_FLAG_IN_CAPS |
GST_BUFFER_FLAG_DELTA_UNIT;
GST_MINI_OBJECT (copy)->flags |= GST_MINI_OBJECT (buffer)->flags & mask;
GST_BUFFER_DATA (copy) = ptr;
GST_BUFFER_SIZE (copy) = GST_BUFFER_SIZE (buffer);
GST_BUFFER_TIMESTAMP (copy) = GST_BUFFER_TIMESTAMP (buffer);
GST_BUFFER_DURATION (copy) = GST_BUFFER_DURATION (buffer);
GST_BUFFER_OFFSET (copy) = GST_BUFFER_OFFSET (buffer);
GST_BUFFER_OFFSET_END (copy) = GST_BUFFER_OFFSET_END (buffer);
if (GST_BUFFER_CAPS (buffer))
GST_BUFFER_CAPS (copy) = gst_caps_ref (GST_BUFFER_CAPS (buffer));
else
GST_BUFFER_CAPS (copy) = NULL;
GST_DEBUG ("Copied buffer %p with ts %" GST_TIME_FORMAT
", caps: %" GST_PTR_FORMAT, buffer,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (copy)), GST_BUFFER_CAPS (copy));
return copy;
}
void *
gst_fenced_buffer_alloc (GstBuffer * buffer, unsigned int length,
gboolean fence_top)
{
int alloc_size;
void *region;
GstMetaFenced *meta;
int page_size;
GST_DEBUG ("buffer=%p length=%d fence_top=%d", buffer, length, fence_top);
if (length == 0)
return NULL;
#ifdef _SC_PAGESIZE
page_size = sysconf (_SC_PAGESIZE);
#else
page_size = getpagesize ();
#endif
/* Allocate a complete page, and one on either side */
alloc_size = ((length - 1) & ~(page_size - 1)) + page_size;
alloc_size += 2 * page_size;
region = mmap (NULL, alloc_size, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (region == MAP_FAILED) {
g_warning ("mmap failed");
return NULL;
}
GST_MINI_OBJECT_CAST (buffer)->dispose =
(GstMiniObjectDisposeFunction) gst_fenced_buffer_dispose;
GST_MINI_OBJECT_CAST (buffer)->copy =
(GstMiniObjectCopyFunction) gst_fenced_buffer_copy;
meta = GST_META_FENCED_ADD (buffer);
#if 0
munmap (region, page_size);
munmap (region + alloc_size - page_size, page_size);
meta->region = region + page_size;
meta->length = alloc_size - page_size;
#else
mprotect (region, page_size, PROT_NONE);
mprotect ((char *) region + alloc_size - page_size, page_size, PROT_NONE);
meta->region = region;
meta->length = alloc_size;
#endif
GST_DEBUG ("new region %p %d", meta->region, meta->length);
if (fence_top) {
int offset;
/* Align to top of region, but force alignment to 4 bytes */
offset = alloc_size - page_size - length;
offset &= ~0x3;
return (void *) ((char *) region + offset);
} else {
return (void *) ((char *) region + page_size);
}
}
/*
* efence.h
*/
#ifndef __GST_EFENCE_H__
#define __GST_EFENCE_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/* #define's don't like whitespacey bits */
#define GST_TYPE_EFENCE \
(gst_gst_efence_get_type())
#define GST_EFENCE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_EFENCE,GstEFence))
#define GST_EFENCE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_EFENCE,GstEFenceClass))
#define GST_IS_EFENCE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_EFENCE))
#define GST_IS_EFENCE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_EFENCE))
typedef struct _GstEFence GstEFence;
typedef struct _GstEFenceClass GstEFenceClass;
struct _GstEFence
{
GstElement element;
GstPad *sinkpad, *srcpad;
gboolean fence_top;
};