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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Port agingTV
Original commit message from CVS: Port agingTV
This commit is contained in:
Wim Taymans
parent
49ae2189ae
commit
053921abd3
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@ -31,6 +31,19 @@
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#define GST_IS_AGINGTV_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_AGINGTV))
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#define SCRATCH_MAX 20
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typedef struct _scratch
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{
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gint life;
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gint x;
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gint dx;
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gint init;
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} scratch;
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static int dx[8] = { 1, 1, 0, -1, -1, -1, 0, 1};
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static int dy[8] = { 0, -1, -1, -1, 0, 1, 1, 1};
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typedef struct _GstAgingTV GstAgingTV;
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typedef struct _GstAgingTVClass GstAgingTVClass;
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@ -41,9 +54,15 @@ struct _GstAgingTV
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GstPad *sinkpad, *srcpad;
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gint width, height;
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gint map_width, map_height;
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guint32 *map;
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gint video_width_margin;
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gint video_size;
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gint area_scale;
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gint aging_mode;
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scratch scratches[SCRATCH_MAX];
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gint scratch_lines;
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gint dust_interval;
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gint pits_interval;
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};
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struct _GstAgingTVClass
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@ -54,7 +73,7 @@ struct _GstAgingTVClass
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GstElementDetails gst_agingtv_details = {
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"AgingTV",
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"Filter/Effect",
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"Aply edge detect on video",
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"Aply aging effect on video",
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VERSION,
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"Wim Taymans <wim.taymans@chello.be>",
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"(C) 2002",
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@ -73,15 +92,17 @@ enum
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ARG_0,
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};
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static void gst_agingtv_class_init (GstAgingTVClass * klass);
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static void gst_agingtv_init (GstAgingTV * filter);
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static void gst_agingtv_class_init (GstAgingTVClass * klass);
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static void gst_agingtv_init (GstAgingTV * filter);
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static void gst_agingtv_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_agingtv_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void aging_mode_switch (GstAgingTV *filter);
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static void gst_agingtv_chain (GstPad * pad, GstBuffer * buf);
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static void gst_agingtv_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_agingtv_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_agingtv_chain (GstPad * pad, GstBuffer * buf);
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static GstElementClass *parent_class = NULL;
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/*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
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@ -135,13 +156,9 @@ gst_agingtv_sinkconnect (GstPad * pad, GstCaps * caps)
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gst_caps_get_int (caps, "width", &filter->width);
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gst_caps_get_int (caps, "height", &filter->height);
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filter->map_width = filter->width / 4;
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filter->map_height = filter->height / 4;
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filter->video_width_margin = filter->width - filter->map_width * 4;
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g_free (filter->map);
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filter->map = (guint32 *)g_malloc (filter->map_width * filter->map_height * sizeof(guint32) * 2);
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bzero(filter->map, filter->map_width * filter->map_height * sizeof(guint32) * 2);
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filter->video_size = filter->width * filter->height;
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filter->aging_mode = 0;
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aging_mode_switch (filter);
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if (gst_pad_try_set_caps (filter->srcpad, caps)) {
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return GST_PAD_CONNECT_OK;
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@ -160,8 +177,159 @@ gst_agingtv_init (GstAgingTV * filter)
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filter->srcpad = gst_pad_new_from_template (gst_effectv_src_factory (), "src");
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gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
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}
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filter->map = NULL;
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static unsigned int
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fastrand (void)
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{
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static unsigned int 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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{
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guint32 a, b;
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gint i;
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for (i = video_area; i; 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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}
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}
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static void
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scratching (scratch *scratches, gint scratch_lines, guint32 *dest, gint width, gint height)
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{
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gint i, y, y1, y2;
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guint32 *p, a, b;
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scratch *scratch;
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for (i = 0; i < scratch_lines; i++) {
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scratch = &scratches[i];
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if (scratch->life) {
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scratch->x = scratch->x + scratch->dx;
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if (scratch->x < 0 || scratch->x > width * 256) {
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scratch->life = 0;
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break;
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}
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p = dest + (scratch->x >> 8);
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if (scratch->init) {
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y1 = scratch->init;
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scratch->init = 0;
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} else {
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y1 = 0;
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}
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scratch->life--;
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if (scratch->life) {
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y2 = height;
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} else {
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y2 = fastrand () % height;
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}
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for (y = y1; y < y2; y++) {
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a = *p & 0xfefeff;
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a += 0x202020;
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b = a & 0x1010100;
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*p = a | (b - (b >> 8));
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p += width;
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}
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} else {
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if ((fastrand () & 0xf0000000) == 0) {
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scratch->life = 2 + (fastrand () >> 27);
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scratch->x = fastrand () % (width * 256);
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scratch->dx = ((int) fastrand ()) >> 23;
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scratch->init = (fastrand () % (height - 1)) + 1;
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}
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}
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}
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}
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static void
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dusts (guint32 *dest, gint width, gint height, gint dust_interval, 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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int x, y;
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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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}
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return;
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}
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dnum = area_scale * 4 + (fastrand() >> 27);
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for (i = 0; i < dnum; i++) {
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x = fastrand () % width;
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y = fastrand () % height;
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d = fastrand () >> 29;
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len = fastrand () % area_scale + 5;
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for (j = 0; j < len; j++) {
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dest[y * width + x] = 0x101010;
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y += dy[d];
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x += dx[d];
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if (x < 0 || x >= width) break;
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if (y < 0 || y >= height) break;
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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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}
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static void
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pits (guint32 *dest, gint width, gint height, gint area_scale, 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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int x, y;
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pnumscale = area_scale * 2;
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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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} 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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}
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}
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for (i = 0; i < pnum; i++) {
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x = fastrand () % (width - 1);
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y = fastrand () % (height - 1);
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size = fastrand () >> 28;
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for (j = 0; j < size; j++) {
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x = x + fastrand () % 3 - 1;
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y = y + fastrand () % 3 - 1;
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dest[y * width + x] = 0xc0c0c0;
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}
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}
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}
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static void
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aging_mode_switch (GstAgingTV *filter)
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{
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switch (filter->aging_mode) {
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default:
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case 0:
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filter->scratch_lines = 7;
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/* Most of the parameters are tuned for 640x480 mode */
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/* area_scale is set to 10 when screen size is 640x480. */
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filter->area_scale = filter->width * filter->height / 64 / 480;
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}
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if (filter->area_scale <= 0)
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filter->area_scale = 1;
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}
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static void
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@ -176,9 +344,15 @@ gst_agingtv_chain (GstPad * pad, GstBuffer * buf)
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src = (guint32 *) GST_BUFFER_DATA (buf);
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outbuf = gst_buffer_new ();
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GST_BUFFER_SIZE (outbuf) = (filter->width * filter->height * 4);
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GST_BUFFER_SIZE (outbuf) = (filter->video_size * sizeof (guint32));
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dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
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coloraging (src, dest, filter->video_size);
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scratching (filter->scratches, filter->scratch_lines, dest, filter->width, filter->height);
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pits (dest, filter->width, filter->height, filter->area_scale, filter->pits_interval);
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if(filter->area_scale > 1)
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dusts (dest, filter->width, filter->height, filter->dust_interval, filter->area_scale);
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gst_buffer_unref (buf);
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