mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-24 02:31:03 +00:00
Code Issues 1 Projects Releases Wiki Activity

Remove the memcpy

Browse source 
Original commit message from CVS:
Remove the memcpy
This commit is contained in:
Wim Taymans 2002-05-05 18:38:52 +00:00
parent 9e42779841
commit 7632dbb008
1 changed files with 52 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

75
gst/effectv/gstquark.c
View file

@ -43,10 +43,10 @@ struct _GstQuarkTV
GstPad *sinkpad, *srcpad;
gint width, height;
gint area;
gint planes;
gint current_plane;
guint32 *buffer;
guint32 **planetable;
GstBuffer **planetable;
};
struct _GstQuarkTVClass
@ -77,21 +77,23 @@ enum
ARG_PLANES,
};
static void gst_quarktv_class_init (GstQuarkTVClass * klass);
static void gst_quarktv_class_init (GstQuarkTVClass * klass);
static void gst_quarktv_init (GstQuarkTV * filter);
static GstElementStateReturn
gst_quarktv_change_state (GstElement *element);
static void gst_quarktv_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_quarktv_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
/* static void gst_quarktv_reset_handler (GstElement *element); */
static void gst_quarktv_chain (GstPad * pad, GstBuffer * buf);
static GstElementClass *parent_class = NULL;
/* static guint gst_quarktv_signals[LAST_SIGNAL] = { 0 }; */
static unsigned int
static inline guint32
fastrand (void)
{
static unsigned int fastrand_val;
@ -138,13 +140,14 @@ gst_quarktv_class_init (GstQuarkTVClass * klass)
gobject_class->set_property = gst_quarktv_set_property;
gobject_class->get_property = gst_quarktv_get_property;
gstelement_class->change_state = gst_quarktv_change_state;
}
static GstPadConnectReturn
gst_quarktv_sinkconnect (GstPad * pad, GstCaps * caps)
{
GstQuarkTV *filter;
gint area;
gint i;
filter = GST_QUARKTV (gst_pad_get_parent (pad));
@ -155,16 +158,13 @@ gst_quarktv_sinkconnect (GstPad * pad, GstCaps * caps)
gst_caps_get_int (caps, "width", &filter->width);
gst_caps_get_int (caps, "height", &filter->height);
area = filter->width * filter->height;
filter->area = filter->width * filter->height;
g_free (filter->buffer);
filter->buffer = (guint32 *) g_malloc (area * filter->planes * sizeof(guint32));
g_free (filter->planetable);
filter->planetable = (guint32 **) g_malloc(filter->planes * sizeof(guint32 *));
filter->planetable = (GstBuffer **) g_malloc(filter->planes * sizeof(GstBuffer *));
bzero (filter->buffer, area * filter->planes * sizeof(guint32));
for(i = 0; i < filter->planes; i++) {
filter->planetable[i] = &(filter->buffer[area * i]);
filter->planetable[i] = NULL;
}
if (gst_pad_try_set_caps (filter->srcpad, caps)) {
@ -187,7 +187,6 @@ gst_quarktv_init (GstQuarkTV * filter)
filter->planes = PLANES;
filter->current_plane = filter->planes - 1;
filter->buffer = NULL;
filter->planetable = NULL;
}
@ -198,29 +197,32 @@ gst_quarktv_chain (GstPad * pad, GstBuffer * buf)
guint32 *src, *dest;
GstBuffer *outbuf;
gint area;
gint i;
gint cf;
filter = GST_QUARKTV (gst_pad_get_parent (pad));
src = (guint32 *) GST_BUFFER_DATA (buf);
area = filter->width * filter->height;
area = filter->area;
outbuf = gst_buffer_new ();
GST_BUFFER_SIZE (outbuf) = area * sizeof(guint32);
dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
memcpy (filter->planetable[filter->current_plane], src, area * sizeof(guint32));
if (filter->planetable[filter->current_plane])
gst_buffer_unref (filter->planetable[filter->current_plane]);
for (i = area - 1; i >= 0; i--) {
cf = (filter->current_plane + (fastrand () >> 24)) & (filter->planes - 1);
dest[i] = (filter->planetable[cf])[i];
filter->planetable[filter->current_plane] = buf;
while (--area) {
GstBuffer *rand;
/* pick a random buffer */
rand = filter->planetable[(filter->current_plane + (fastrand () >> 24)) & (filter->planes - 1)];
dest[area] = (rand ? ((guint32 *)GST_BUFFER_DATA (rand))[area] : 0);
}
gst_buffer_unref (buf);
gst_pad_push (filter->srcpad, outbuf);
filter->current_plane--;
@ -229,6 +231,33 @@ gst_quarktv_chain (GstPad * pad, GstBuffer * buf)
filter->current_plane = filter->planes - 1;
}
static GstElementStateReturn
gst_quarktv_change_state (GstElement *element)
{
GstQuarkTV *filter = GST_QUARKTV (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_PAUSED_TO_READY:
{
gint i;
for (i = 0; i < filter->planes; i++) {
if (filter->planetable[i])
gst_buffer_unref (filter->planetable[i]);
filter->planetable[i] = NULL;
}
g_free (filter->planetable);
filter->planetable = NULL;
break;
}
default:
break;
}
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
}
static void
gst_quarktv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{