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basetextoverlay: Make shading_value a property

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=735879
This commit is contained in:
Nicola Murino 2014-09-02 13:10:34 +02:00 committed by Sebastian Dröge
parent 302f123c62
commit ad16f15ee4
1 changed files with 21 additions and 12 deletions
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33
ext/pango/gstbasetextoverlay.c
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@ -89,7 +89,6 @@
* - use proper strides and offset for I420
* - if text is wider than the video picture, it does not get
* clipped properly during blitting (if wrapping is disabled)
* - make 'shading_value' a property (or enum: light/normal/dark/verydark)?
*/
GST_DEBUG_CATEGORY (pango_debug);
@ -114,9 +113,7 @@ GST_DEBUG_CATEGORY (pango_debug);
#define DEFAULT_PROP_VERTICAL_RENDER FALSE
#define DEFAULT_PROP_COLOR 0xffffffff
#define DEFAULT_PROP_OUTLINE_COLOR 0xff000000
/* make a property of me */
#define DEFAULT_SHADING_VALUE -80
#define DEFAULT_PROP_SHADING_VALUE 80
#define MINIMUM_OUTLINE_OFFSET 1.0
#define DEFAULT_SCALE_BASIS 640
@ -126,6 +123,7 @@ enum
PROP_0,
PROP_TEXT,
PROP_SHADING,
PROP_SHADING_VALUE,
PROP_HALIGNMENT,
PROP_VALIGNMENT,
PROP_XPAD,
@ -403,6 +401,11 @@ gst_base_text_overlay_class_init (GstBaseTextOverlayClass * klass)
g_param_spec_boolean ("shaded-background", "shaded background",
"Whether to shade the background under the text area",
DEFAULT_PROP_SHADING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SHADING_VALUE,
g_param_spec_uint ("shading-value", "background shading value",
"Shading value to apply if shaded-background is true", 1, 255,
DEFAULT_PROP_SHADING_VALUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_VALIGNMENT,
g_param_spec_enum ("valignment", "vertical alignment",
"Vertical alignment of the text", GST_TYPE_BASE_TEXT_OVERLAY_VALIGN,
@ -631,7 +634,7 @@ gst_base_text_overlay_init (GstBaseTextOverlay * overlay,
overlay->wrap_mode = DEFAULT_PROP_WRAP_MODE;
overlay->want_shading = DEFAULT_PROP_SHADING;
overlay->shading_value = DEFAULT_SHADING_VALUE;
overlay->shading_value = DEFAULT_PROP_SHADING_VALUE;
overlay->silent = DEFAULT_PROP_SILENT;
overlay->wait_text = DEFAULT_PROP_WAIT_TEXT;
overlay->auto_adjust_size = DEFAULT_PROP_AUTO_ADJUST_SIZE;
@ -962,6 +965,9 @@ gst_base_text_overlay_set_property (GObject * object, guint prop_id,
g_mutex_unlock (GST_BASE_TEXT_OVERLAY_GET_CLASS (overlay)->pango_lock);
overlay->need_render = TRUE;
break;
case PROP_SHADING_VALUE:
overlay->shading_value = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -1033,6 +1039,9 @@ gst_base_text_overlay_get_property (GObject * object, guint prop_id,
case PROP_OUTLINE_COLOR:
g_value_set_uint (value, overlay->outline_color);
break;
case PROP_SHADING_VALUE:
g_value_set_uint (value, overlay->shading_value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -1551,7 +1560,7 @@ gst_base_text_overlay_render_pangocairo (GstBaseTextOverlay * overlay,
cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
if (overlay->want_shading)
cairo_paint_with_alpha (cr, overlay->shading_value);
cairo_paint_with_alpha (cr, -overlay->shading_value);
/* apply transformations */
cairo_set_matrix (cr, &cairo_matrix);
@ -1641,7 +1650,7 @@ gst_base_text_overlay_shade_planar_Y (GstBaseTextOverlay * overlay,
for (i = y0; i < y1; ++i) {
for (j = x0; j < x1; ++j) {
gint y = dest_ptr[(i * dest_stride) + j] + overlay->shading_value;
gint y = dest_ptr[(i * dest_stride) + j] - overlay->shading_value;
dest_ptr[(i * dest_stride) + j] = CLAMP (y, 0, 255);
}
@ -1676,7 +1685,7 @@ gst_base_text_overlay_shade_packed_Y (GstBaseTextOverlay * overlay,
gint y_pos;
y_pos = (i * dest_stride) + j * pixel_stride;
y = dest_ptr[y_pos] + overlay->shading_value;
y = dest_ptr[y_pos] - overlay->shading_value;
dest_ptr[y_pos] = CLAMP (y, 0, 255);
}
@ -1701,7 +1710,7 @@ gst_base_text_overlay_shade_xRGB (GstBaseTextOverlay * overlay,
y_pos = (i * 4 * overlay->width) + j * 4;
for (k = 0; k < 4; k++) {
y = dest_ptr[y_pos + k] + overlay->shading_value;
y = dest_ptr[y_pos + k] - overlay->shading_value;
dest_ptr[y_pos + k] = CLAMP (y, 0, 255);
}
}
@ -1717,7 +1726,7 @@ gst_base_text_overlay_shade_rgb24 (GstBaseTextOverlay * overlay,
gint y, x, stride, shading_val, tmp;
guint8 *p;
shading_val = overlay->shading_value;
shading_val = -overlay->shading_value;
stride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0);
for (y = y0; y < y1; ++y) {
@ -1741,7 +1750,7 @@ gst_base_text_overlay_shade_IYU1 (GstBaseTextOverlay * overlay,
gint y, x, stride, shading_val, tmp;
guint8 *p;
shading_val = overlay->shading_value;
shading_val = -overlay->shading_value;
stride = GST_VIDEO_FRAME_PLANE_STRIDE (frame, 0);
/* IYU1: packed 4:1:1 YUV (Cb-Y0-Y1-Cr-Y2-Y3 ...) */
@ -1777,7 +1786,7 @@ gint x0, gint x1, gint y0, gint y1) \
gint y, y_pos, k;\
y_pos = (i * 4 * overlay->width) + j * 4;\
for (k = OFFSET; k < 3+OFFSET; k++) {\
y = dest_ptr[y_pos + k] + overlay->shading_value;\
y = dest_ptr[y_pos + k] - overlay->shading_value;\
dest_ptr[y_pos + k] = CLAMP (y, 0, 255);\
}\
}\