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