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checksumsink: add "hash" property and allow more checksum types

Browse source 
Now any GChecksumType can be used by GstChecksumSink, adding
support for MD5, SHA-256 and SHA-512 in addition to SHA-1.

https://bugzilla.gnome.org/show_bug.cgi?id=763006
This commit is contained in:
Scott D Phillips 2016-03-01 14:54:01 -08:00 committed by Tim-Philipp Müller
parent 1c0688ab65
commit 2830145a71
2 changed files with 76 additions and 4 deletions
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78
gst/debugutils/gstchecksumsink.c
View file

@ -25,6 +25,10 @@
#include <gst/base/gstbasesink.h>
#include "gstchecksumsink.h"
static void gst_checksum_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_checksum_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_checksum_sink_dispose (GObject * object);
static void gst_checksum_sink_finalize (GObject * object);
@ -33,6 +37,12 @@ static gboolean gst_checksum_sink_stop (GstBaseSink * sink);
static GstFlowReturn
gst_checksum_sink_render (GstBaseSink * sink, GstBuffer * buffer);
enum
{
PROP_0,
PROP_HASH,
};
static GstStaticPadTemplate gst_checksum_sink_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
@ -47,6 +57,26 @@ GST_STATIC_PAD_TEMPLATE ("src",
/* class initialization */
#define GST_TYPE_CHECKSUM_SINK_HASH (gst_checksum_sink_hash_get_type ())
static GType
gst_checksum_sink_hash_get_type (void)
{
static GType gtype = 0;
if (gtype == 0) {
static const GEnumValue values[] = {
{G_CHECKSUM_MD5, "MD5", "md5"},
{G_CHECKSUM_SHA1, "SHA-1", "sha1"},
{G_CHECKSUM_SHA256, "SHA-256", "sha256"},
{G_CHECKSUM_SHA512, "SHA-512", "sha512"},
{0, NULL, NULL},
};
gtype = g_enum_register_static ("GstChecksumSinkHash", values);
}
return gtype;
}
#define gst_checksum_sink_parent_class parent_class
G_DEFINE_TYPE (GstChecksumSink, gst_checksum_sink, GST_TYPE_BASE_SINK);
@ -57,6 +87,8 @@ gst_checksum_sink_class_init (GstChecksumSinkClass * klass)
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass);
gobject_class->set_property = gst_checksum_sink_set_property;
gobject_class->get_property = gst_checksum_sink_get_property;
gobject_class->dispose = gst_checksum_sink_dispose;
gobject_class->finalize = gst_checksum_sink_finalize;
base_sink_class->start = GST_DEBUG_FUNCPTR (gst_checksum_sink_start);
@ -68,6 +100,11 @@ gst_checksum_sink_class_init (GstChecksumSinkClass * klass)
gst_element_class_add_static_pad_template (element_class,
&gst_checksum_sink_sink_template);
g_object_class_install_property (gobject_class, PROP_HASH,
g_param_spec_enum ("hash", "Hash", "Checksum type",
gst_checksum_sink_hash_get_type (), G_CHECKSUM_SHA1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (element_class, "Checksum sink",
"Debug/Sink", "Calculates a checksum for buffers",
"David Schleef <ds@schleef.org>");
@ -77,15 +114,48 @@ static void
gst_checksum_sink_init (GstChecksumSink * checksumsink)
{
gst_base_sink_set_sync (GST_BASE_SINK (checksumsink), FALSE);
checksumsink->hash = G_CHECKSUM_SHA1;
}
void
static void
gst_checksum_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstChecksumSink *checksumsink = GST_CHECKSUM_SINK (object);
switch (prop_id) {
case PROP_HASH:
checksumsink->hash = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_checksum_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstChecksumSink *checksumsink = GST_CHECKSUM_SINK (object);
switch (prop_id) {
case PROP_HASH:
g_value_set_enum (value, checksumsink->hash);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_checksum_sink_dispose (GObject * object)
{
G_OBJECT_CLASS (parent_class)->dispose (object);
}
void
static void
gst_checksum_sink_finalize (GObject * object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
@ -108,9 +178,11 @@ gst_checksum_sink_render (GstBaseSink * sink, GstBuffer * buffer)
{
gchar *s;
GstMapInfo map;
GstChecksumSink *checksumsink;
checksumsink = GST_CHECKSUM_SINK (sink);
gst_buffer_map (buffer, &map, GST_MAP_READ);
s = g_compute_checksum_for_data (G_CHECKSUM_SHA1, map.data, map.size);
s = g_compute_checksum_for_data (checksumsink->hash, map.data, map.size);
gst_buffer_unmap (buffer, &map);
g_print ("%" GST_TIME_FORMAT " %s\n",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)), s);

2
gst/debugutils/gstchecksumsink.h
View file

@ -37,7 +37,7 @@ typedef struct _GstChecksumSinkClass GstChecksumSinkClass;
struct _GstChecksumSink
{
GstBaseSink base_checksumsink;
GChecksumType hash;
};
struct _GstChecksumSinkClass