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[MOVED FROM BAD 03/29] shapewipe: Add border property to allow smooth borders
...and use a border of 0.01 in the example application.
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parent
b7f83c6b80
commit
c0f9553707
3 changed files with 41 additions and 6 deletions
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@ -57,7 +57,8 @@ static GstCaps *gst_shape_wipe_src_getcaps (GstPad * pad);
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enum
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{
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PROP_0,
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PROP_POSITION
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PROP_POSITION,
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PROP_BORDER
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};
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static GstStaticPadTemplate video_sink_pad_template =
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@ -121,6 +122,10 @@ gst_shape_wipe_class_init (GstShapeWipeClass * klass)
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g_param_spec_float ("position", "Position", "Position of the mask",
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0.0, 1.0, 0.0,
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G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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g_object_class_install_property (gobject_class, PROP_BORDER,
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g_param_spec_float ("border", "Border", "Border of the mask",
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0.0, 1.0, 0.0,
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G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE | GST_PARAM_CONTROLLABLE));
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_shape_wipe_change_state);
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@ -176,6 +181,9 @@ gst_shape_wipe_get_property (GObject * object, guint prop_id,
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case PROP_POSITION:
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g_value_set_float (value, self->mask_position);
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break;
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case PROP_BORDER:
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g_value_set_float (value, self->mask_border);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -192,6 +200,9 @@ gst_shape_wipe_set_property (GObject * object, guint prop_id,
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case PROP_POSITION:
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self->mask_position = g_value_get_float (value);
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break;
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case PROP_BORDER:
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self->mask_border = g_value_get_float (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -227,6 +238,7 @@ gst_shape_wipe_reset (GstShapeWipe * self)
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self->width = self->height = 0;
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self->mask_position = 0.0;
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self->mask_border = 0.0;
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self->mask_bpp = 0;
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gst_segment_init (&self->segment, GST_FORMAT_TIME);
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@ -544,19 +556,30 @@ gst_shape_wipe_blend_16 (GstShapeWipe * self, GstBuffer * inbuf,
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guint i, j;
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guint mask_increment = GST_ROUND_UP_2 (self->width) - self->width;
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gfloat position = self->mask_position;
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gfloat low = MAX (0.0, position - self->mask_border);
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gfloat high = MIN (1.0, position + self->mask_border);
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for (i = 0; i < self->height; i++) {
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for (j = 0; j < self->width; j++) {
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if (*mask / 65535.0 < position) {
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gfloat in = *mask / 65535.0;
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if (in <= low) {
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output[0] = 0x00; /* A */
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output[1] = 0x00; /* Y */
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output[2] = 0x80; /* U */
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output[3] = 0x80; /* V */
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} else {
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} else if (in >= high) {
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output[0] = 0xff; /* A */
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output[1] = input[1]; /* Y */
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output[2] = input[2]; /* U */
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output[3] = input[3]; /* V */
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} else {
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gfloat val = 255 * ((in - low) / (high - low));
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output[0] = CLAMP (val, 0, 255); /* A */
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output[1] = input[1]; /* Y */
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output[2] = input[2]; /* U */
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output[3] = input[3]; /* V */
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}
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mask++;
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@ -579,19 +602,30 @@ gst_shape_wipe_blend_8 (GstShapeWipe * self, GstBuffer * inbuf,
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guint i, j;
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guint mask_increment = GST_ROUND_UP_4 (self->width) - self->width;
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gfloat position = self->mask_position;
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gfloat low = MAX (0.0, position - self->mask_border);
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gfloat high = MIN (1.0, position + self->mask_border);
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for (i = 0; i < self->height; i++) {
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for (j = 0; j < self->width; j++) {
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if (*mask / 255.0 < position) {
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gfloat in = *mask / 255.0;
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if (in <= low) {
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output[0] = 0x00; /* A */
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output[1] = 0x00; /* Y */
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output[2] = 0x80; /* U */
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output[3] = 0x80; /* V */
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} else {
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} else if (in >= high) {
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output[0] = 0xff; /* A */
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output[1] = input[1]; /* Y */
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output[2] = input[2]; /* U */
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output[3] = input[3]; /* V */
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} else {
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gfloat val = 255 * ((in - low) / (high - low));
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output[0] = CLAMP (val, 0, 255); /* A */
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output[1] = input[1]; /* Y */
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output[2] = input[2]; /* U */
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output[3] = input[3]; /* V */
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}
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mask++;
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@ -54,6 +54,7 @@ struct _GstShapeWipe
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GstBuffer *mask;
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gfloat mask_position;
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gfloat mask_border;
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GMutex *mask_mutex;
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GCond *mask_cond;
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gint mask_bpp;
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@ -67,7 +67,7 @@ main (gint argc, gchar ** argv)
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pipeline_string =
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g_strdup_printf
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("videotestsrc ! video/x-raw-yuv,width=640,height=480 ! shapewipe name=shape ! videomixer name=mixer ! ffmpegcolorspace ! autovideosink filesrc location=%s ! typefind ! decodebin2 ! ffmpegcolorspace ! videoscale ! queue ! shape.mask_sink videotestsrc pattern=snow ! video/x-raw-yuv,width=640,height=480 ! queue ! mixer.",
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("videotestsrc ! video/x-raw-yuv,width=640,height=480 ! shapewipe name=shape border=0.01 ! videomixer name=mixer ! ffmpegcolorspace ! autovideosink filesrc location=%s ! typefind ! decodebin2 ! ffmpegcolorspace ! videoscale ! queue ! shape.mask_sink videotestsrc pattern=snow ! video/x-raw-yuv,width=640,height=480 ! queue ! mixer.",
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argv[1]);
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pipeline = gst_parse_launch (pipeline_string, NULL);
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