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agingtv: Store and update state inside the instance struct

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This makes the coloraging effect and pits effect visible.
This commit is contained in:
Sebastian Dröge 2009-06-15 15:05:58 +02:00
parent dea67f3d96
commit 865f11192c
1 changed files with 34 additions and 25 deletions
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59
gst/effectv/gstaging.c
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@ -76,7 +76,8 @@ struct _GstAgingTV
GstVideoFilter videofilter;
gint width, height;
gint aging_mode;
gint coloraging_state;
scratch scratches[SCRATCH_MAX];
gint scratch_lines;
@ -157,26 +158,36 @@ gst_agingtv_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
return ret;
}
static unsigned int
static inline guint
fastrand (void)
{
static unsigned int fastrand_val;
static guint fastrand_val;
return (fastrand_val = fastrand_val * 1103515245 + 12345);
}
static void
coloraging (guint32 * src, guint32 * dest, gint video_area)
coloraging (guint32 * src, guint32 * dest, gint video_area, gint * c)
{
guint32 a, b;
gint i;
gint c_tmp = *c;
for (i = video_area; i; i--) {
c_tmp -= (gint) (fastrand ()) >> 28;
if (c_tmp < 0)
c_tmp = 0;
if (c_tmp > 0x18)
c_tmp = 0x18;
for (i = 0; i < video_area; i++) {
a = *src++;
b = (a & 0xfcfcfc) >> 2;
*dest++ = a - b + 0x181818 + ((fastrand () >> 8) & 0x101010);
*dest++ =
a - b + (c_tmp | (c_tmp << 8) | (c_tmp << 16)) +
((fastrand () >> 8) & 0x101010);
}
*c = c_tmp;
}
@ -230,17 +241,17 @@ scratching (scratch * scratches, gint scratch_lines, guint32 * dest, gint width,
}
static void
dusts (guint32 * dest, gint width, gint height, gint dust_interval,
dusts (guint32 * dest, gint width, gint height, gint * dust_interval,
gint area_scale)
{
int i, j;
int dnum;
int d, len;
gint i, j;
gint dnum;
gint d, len;
guint x, y;
if (dust_interval == 0) {
if (*dust_interval == 0) {
if ((fastrand () & 0xf0000000) == 0) {
dust_interval = fastrand () >> 29;
*dust_interval = fastrand () >> 29;
}
return;
}
@ -262,27 +273,27 @@ dusts (guint32 * dest, gint width, gint height, gint dust_interval,
d = (d + fastrand () % 3 - 1) & 7;
}
}
dust_interval--;
*dust_interval = *dust_interval - 1;
}
static void
pits (guint32 * dest, gint width, gint height, gint area_scale,
gint pits_interval)
gint * pits_interval)
{
int i, j;
int pnum, size, pnumscale;
gint i, j;
gint pnum, size, pnumscale;
guint x, y;
pnumscale = area_scale * 2;
if (pits_interval) {
if (*pits_interval) {
pnum = pnumscale + (fastrand () % pnumscale);
pits_interval--;
*pits_interval = *pits_interval - 1;
} else {
pnum = fastrand () % pnumscale;
if ((fastrand () & 0xf8000000) == 0) {
pits_interval = (fastrand () >> 28) + 20;
*pits_interval = (fastrand () >> 28) + 20;
}
}
for (i = 0; i < pnum; i++) {
@ -310,22 +321,20 @@ gst_agingtv_transform (GstBaseTransform * trans, GstBuffer * in,
GstAgingTV *agingtv = GST_AGINGTV (trans);
gint width = agingtv->width;
gint height = agingtv->height;
int video_size = width * height;
gint video_size = width * height;
guint32 *src = (guint32 *) GST_BUFFER_DATA (in);
guint32 *dest = (guint32 *) GST_BUFFER_DATA (out);
gint area_scale = width * height / 64 / 480;
GstFlowReturn ret = GST_FLOW_OK;
gst_buffer_copy_metadata (out, in, GST_BUFFER_COPY_TIMESTAMPS);
if (area_scale <= 0)
area_scale = 1;
coloraging (src, dest, video_size);
coloraging (src, dest, video_size, &agingtv->coloraging_state);
scratching (agingtv->scratches, agingtv->scratch_lines, dest, width, height);
pits (dest, width, height, area_scale, agingtv->pits_interval);
pits (dest, width, height, area_scale, &agingtv->pits_interval);
if (area_scale > 1)
dusts (dest, width, height, agingtv->dust_interval, area_scale);
dusts (dest, width, height, &agingtv->dust_interval, area_scale);
return ret;
}