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videoscale: add property to do scaling after gamma-decode

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This commit is contained in:
Wim Taymans 2014-11-25 11:54:51 +01:00
parent 724b83c5f5
commit 43f44d41dc
2 changed files with 27 additions and 2 deletions
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28
gst/videoscale/gstvideoscale.c
View file

@ -90,6 +90,7 @@ GST_DEBUG_CATEGORY_STATIC (GST_CAT_PERFORMANCE);
#define DEFAULT_PROP_DITHER FALSE
#define DEFAULT_PROP_SUBMETHOD 1
#define DEFAULT_PROP_ENVELOPE 2.0
#define DEFAULT_PROP_GAMMA_DECODE FALSE
enum
{
@ -100,7 +101,8 @@ enum
PROP_SHARPEN,
PROP_DITHER,
PROP_SUBMETHOD,
PROP_ENVELOPE
PROP_ENVELOPE,
PROP_GAMMA_DECODE,
};
#undef GST_VIDEO_SIZE_RANGE
@ -254,9 +256,15 @@ gst_video_scale_class_init (GstVideoScaleClass * klass)
"Size of filter envelope", 1.0, 5.0, DEFAULT_PROP_ENVELOPE,
G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_GAMMA_DECODE,
g_param_spec_boolean ("gamma-decode", "Gamma Decode",
"Decode gamma before scaling", DEFAULT_PROP_GAMMA_DECODE,
G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (element_class,
"Video scaler", "Filter/Converter/Video/Scaler",
"Resizes video", "Wim Taymans <wim.taymans@chello.be>");
"Resizes video", "Wim Taymans <wim.taymans@gmail.com>");
gst_element_class_add_pad_template (element_class,
gst_video_scale_sink_template_factory ());
@ -283,6 +291,7 @@ gst_video_scale_init (GstVideoScale * videoscale)
videoscale->sharpen = DEFAULT_PROP_SHARPEN;
videoscale->dither = DEFAULT_PROP_DITHER;
videoscale->envelope = DEFAULT_PROP_ENVELOPE;
videoscale->gamma_decode = DEFAULT_PROP_GAMMA_DECODE;
}
static void
@ -337,6 +346,11 @@ gst_video_scale_set_property (GObject * object, guint prop_id,
vscale->envelope = g_value_get_double (value);
GST_OBJECT_UNLOCK (vscale);
break;
case PROP_GAMMA_DECODE:
GST_OBJECT_LOCK (vscale);
vscale->gamma_decode = g_value_get_boolean (value);
GST_OBJECT_UNLOCK (vscale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -385,6 +399,11 @@ gst_video_scale_get_property (GObject * object, guint prop_id, GValue * value,
g_value_set_double (value, vscale->envelope);
GST_OBJECT_UNLOCK (vscale);
break;
case PROP_GAMMA_DECODE:
GST_OBJECT_LOCK (vscale);
g_value_set_boolean (value, vscale->gamma_decode);
GST_OBJECT_UNLOCK (vscale);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -585,6 +604,11 @@ gst_video_scale_set_info (GstVideoFilter * filter, GstCaps * in,
GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT,
out_info->height - videoscale->borders_h, NULL);
if (videoscale->gamma_decode) {
gst_structure_set (options,
GST_VIDEO_CONVERTER_OPT_GAMMA_MODE, G_TYPE_STRING, "remap", NULL);
}
if (videoscale->convert)
gst_video_converter_free (videoscale->convert);
videoscale->convert = gst_video_converter_new (in_info, out_info, options);

1
gst/videoscale/gstvideoscale.h
View file

@ -91,6 +91,7 @@ struct _GstVideoScale {
gboolean dither;
int submethod;
double envelope;
gboolean gamma_decode;
GstVideoConverter *convert;