/* GStreamer
* Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-smptealpha
*
* smptealpha can accept an I420 or AYUV video stream. An alpha channel is added
* using an effect specific SMPTE mask in the I420 input case. In the AYUV case,
* the alpha channel is modified using the effect specific SMPTE mask.
*
* The #GstSmpteAlpha:position property is a controllabe double between 0.0 and
* 1.0 that specifies the position in the transition. 0.0 is the start of the
* transition with the alpha channel to complete opaque where 1.0 has the alpha
* channel set to completely transparent.
*
* The #GstSmpteAlpha:depth property defines the precision in bits of the mask.
* A higher presision will create a mask with smoother gradients in order to
* avoid banding.
*
* <refsect2>
* <title>Sample pipelines</title>
* <para>
* Here is a pipeline to demonstrate the smpte transition :
* <programlisting>
* gst-launch-1.0 -v videotestsrc ! smptealpha border=20000 type=44
* position=0.5 ! videomixer ! videoconvert ! ximagesink
* </programlisting>
* This shows a midway bowtie-h transition a from a videotestsrc to a
* transparent image. The edges of the transition are smoothed with a
* 20000 big border.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstsmptealpha.h"
#include "paint.h"
GST_DEBUG_CATEGORY_STATIC (gst_smpte_alpha_debug);
#define GST_CAT_DEFAULT gst_smpte_alpha_debug
static GstStaticPadTemplate gst_smpte_alpha_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("AYUV") ";"
GST_VIDEO_CAPS_MAKE ("ARGB") ";" GST_VIDEO_CAPS_MAKE ("BGRA") ";"
GST_VIDEO_CAPS_MAKE ("RGBA") ";" GST_VIDEO_CAPS_MAKE ("ARGB"))
);
static GstStaticPadTemplate gst_smpte_alpha_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("I420") ";"
GST_VIDEO_CAPS_MAKE ("YV12")
";" GST_VIDEO_CAPS_MAKE ("AYUV")
";" GST_VIDEO_CAPS_MAKE ("ARGB") ";" GST_VIDEO_CAPS_MAKE ("BGRA")
";" GST_VIDEO_CAPS_MAKE ("RGBA") ";" GST_VIDEO_CAPS_MAKE ("ARGB"))
);
/* SMPTE signals and properties */
#define DEFAULT_PROP_TYPE 1
#define DEFAULT_PROP_BORDER 0
#define DEFAULT_PROP_DEPTH 16
#define DEFAULT_PROP_POSITION 0.0
#define DEFAULT_PROP_INVERT FALSE
enum
{
PROP_0,
PROP_TYPE,
PROP_BORDER,
PROP_DEPTH,
PROP_POSITION,
PROP_INVERT
};
#define AYUV_SIZE(w,h) ((w) * (h) * 4)
#define GST_TYPE_SMPTE_TRANSITION_TYPE (gst_smpte_alpha_transition_type_get_type())
static GType
gst_smpte_alpha_transition_type_get_type (void)
{
static GType smpte_transition_type = 0;
GEnumValue *smpte_transitions;
if (!smpte_transition_type) {
const GList *definitions;
gint i = 0;
definitions = gst_mask_get_definitions ();
smpte_transitions =
g_new0 (GEnumValue, g_list_length ((GList *) definitions) + 1);
while (definitions) {
GstMaskDefinition *definition = (GstMaskDefinition *) definitions->data;
definitions = g_list_next (definitions);
smpte_transitions[i].value = definition->type;
/* older GLib versions have the two fields as non-const, hence the cast */
smpte_transitions[i].value_nick = (gchar *) definition->short_name;
smpte_transitions[i].value_name = (gchar *) definition->long_name;
i++;
}
smpte_transition_type =
g_enum_register_static ("GstSMPTEAlphaTransitionType",
smpte_transitions);
}
return smpte_transition_type;
}
static void gst_smpte_alpha_finalize (GstSMPTEAlpha * smpte);
static void gst_smpte_alpha_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_smpte_alpha_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_smpte_alpha_set_info (GstVideoFilter * vfilter,
GstCaps * incaps, GstVideoInfo * in_info,
GstCaps * outcaps, GstVideoInfo * out_info);
static GstFlowReturn gst_smpte_alpha_transform_frame (GstVideoFilter * vfilter,
GstVideoFrame * in_frame, GstVideoFrame * out_frame);
static void gst_smpte_alpha_before_transform (GstBaseTransform * trans,
GstBuffer * buf);
static GstCaps *gst_smpte_alpha_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * from, GstCaps * filter);
#define gst_smpte_alpha_parent_class parent_class
G_DEFINE_TYPE (GstSMPTEAlpha, gst_smpte_alpha, GST_TYPE_VIDEO_FILTER);
static void
gst_smpte_alpha_class_init (GstSMPTEAlphaClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *element_class = (GstElementClass *) (klass);
GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
gobject_class->set_property = gst_smpte_alpha_set_property;
gobject_class->get_property = gst_smpte_alpha_get_property;
gobject_class->finalize = (GObjectFinalizeFunc) gst_smpte_alpha_finalize;
_gst_mask_init ();
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_TYPE,
g_param_spec_enum ("type", "Type", "The type of transition to use",
GST_TYPE_SMPTE_TRANSITION_TYPE, DEFAULT_PROP_TYPE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BORDER,
g_param_spec_int ("border", "Border",
"The border width of the transition", 0, G_MAXINT,
DEFAULT_PROP_BORDER,
GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEPTH,
g_param_spec_int ("depth", "Depth", "Depth of the mask in bits", 1, 24,
DEFAULT_PROP_DEPTH, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_POSITION,
g_param_spec_double ("position", "Position",
"Position of the transition effect", 0.0, 1.0, DEFAULT_PROP_POSITION,
GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstSMPTEAlpha:invert:
*
* Set to TRUE to invert the transition mask (ie. flip it horizontally).
*/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_INVERT,
g_param_spec_boolean ("invert", "Invert",
"Invert transition mask", DEFAULT_PROP_POSITION,
GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
trans_class->before_transform =
GST_DEBUG_FUNCPTR (gst_smpte_alpha_before_transform);
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_smpte_alpha_transform_caps);
vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_smpte_alpha_set_info);
vfilter_class->transform_frame =
GST_DEBUG_FUNCPTR (gst_smpte_alpha_transform_frame);
gst_element_class_add_static_pad_template (element_class,
&gst_smpte_alpha_sink_template);
gst_element_class_add_static_pad_template (element_class,
&gst_smpte_alpha_src_template);
gst_element_class_set_static_metadata (element_class, "SMPTE transitions",
"Filter/Editor/Video",
"Apply the standard SMPTE transitions as alpha on video images",
"Wim Taymans <wim.taymans@gmail.com>");
}
static gboolean
gst_smpte_alpha_update_mask (GstSMPTEAlpha * smpte, gint type,
gboolean invert, gint depth, gint width, gint height)
{
GstMask *newmask;
/* try to avoid regenerating the mask if we already have one that is
* correct */
if (smpte->mask) {
if (smpte->type == type &&
smpte->invert == invert &&
smpte->depth == depth &&
smpte->width == width && smpte->height == height)
return TRUE;
}
smpte->type = type;
smpte->invert = invert;
smpte->depth = depth;
smpte->width = width;
smpte->height = height;
/* Not negotiated yet */
if (width == 0 || height == 0) {
return TRUE;
}
newmask = gst_mask_factory_new (type, invert, depth, width, height);
if (!newmask)
goto mask_failed;
if (smpte->mask)
gst_mask_destroy (smpte->mask);
smpte->mask = newmask;
return TRUE;
/* ERRORS */
mask_failed:
{
GST_ERROR_OBJECT (smpte, "failed to create a mask");
return FALSE;
}
}
static void
gst_smpte_alpha_init (GstSMPTEAlpha * smpte)
{
smpte->type = DEFAULT_PROP_TYPE;
smpte->border = DEFAULT_PROP_BORDER;
smpte->depth = DEFAULT_PROP_DEPTH;
smpte->position = DEFAULT_PROP_POSITION;
smpte->invert = DEFAULT_PROP_INVERT;
}
#define CREATE_ARGB_FUNC(name, A, R, G, B) \
static void \
gst_smpte_alpha_process_##name##_##name (GstSMPTEAlpha * smpte, \
const GstVideoFrame * in_frame, GstVideoFrame * out_frame, GstMask * mask, \
gint border, gint pos) \
{ \
gint i, j; \
const guint32 *maskp; \
gint value; \
gint min, max; \
gint width, height; \
guint8 *in, *out; \
gint src_wrap, dest_wrap; \
\
if (border == 0) \
border++; \
\
min = pos - border; \
max = pos; \
GST_DEBUG_OBJECT (smpte, "pos %d, min %d, max %d, border %d", pos, min, max, \
border); \
\
maskp = mask->data; \
\
width = GST_VIDEO_FRAME_WIDTH (out_frame); \
height = GST_VIDEO_FRAME_HEIGHT (out_frame); \
\
in = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0); \
out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0); \
src_wrap = GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0) - (width << 2); \
dest_wrap = GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0) - (width << 2); \
\
/* we basically copy the source to dest but we scale the alpha channel with \
* the mask */ \
for (i = 0; i < height; i++) { \
for (j = 0; j < width; j++) { \
value = *maskp++; \
out[A] = (in[A] * ((CLAMP (value, min, max) - min) << 8) / border) >> 8; \
out[R] = in[R]; \
out[G] = in[G]; \
out[B] = in[B]; \
out += 4; \
in += 4; \
} \
in += src_wrap; \
out += dest_wrap; \
} \
}
CREATE_ARGB_FUNC (argb, 0, 1, 2, 3);
CREATE_ARGB_FUNC (bgra, 3, 2, 1, 0);
CREATE_ARGB_FUNC (abgr, 0, 3, 2, 1);
CREATE_ARGB_FUNC (rgba, 3, 0, 1, 2);
static void
gst_smpte_alpha_process_ayuv_ayuv (GstSMPTEAlpha * smpte,
const GstVideoFrame * in_frame, GstVideoFrame * out_frame, GstMask * mask,
gint border, gint pos)
{
gint i, j;
const guint32 *maskp;
gint value;
gint min, max;
gint width, height;
guint8 *in, *out;
gint src_wrap, dest_wrap;
if (border == 0)
border++;
min = pos - border;
max = pos;
GST_DEBUG_OBJECT (smpte, "pos %d, min %d, max %d, border %d", pos, min, max,
border);
maskp = mask->data;
width = GST_VIDEO_FRAME_WIDTH (out_frame);
height = GST_VIDEO_FRAME_HEIGHT (out_frame);
in = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
src_wrap = GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0) - (width << 2);
dest_wrap = GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0) - (width << 2);
/* we basically copy the source to dest but we scale the alpha channel with
* the mask */
for (i = 0; i < height; i++) {
for (j = 0; j < width; j++) {
value = *maskp++;
*out++ = (*in++ * ((CLAMP (value, min, max) - min) << 8) / border) >> 8;
*out++ = *in++;
*out++ = *in++;
*out++ = *in++;
}
in += src_wrap;
out += dest_wrap;
}
}
static void
gst_smpte_alpha_process_i420_ayuv (GstSMPTEAlpha * smpte,
const GstVideoFrame * in_frame, GstVideoFrame * out_frame, GstMask * mask,
gint border, gint pos)
{
const guint8 *srcY;
const guint8 *srcU;
const guint8 *srcV;
guint8 *out;
gint i, j;
gint src_wrap, src_u_wrap, src_v_wrap, dest_wrap;
gint y_stride, u_stride, v_stride;
gboolean odd_width;
const guint32 *maskp;
gint value;
gint min, max;
gint width, height;
if (border == 0)
border++;
min = pos - border;
max = pos;
GST_DEBUG_OBJECT (smpte, "pos %d, min %d, max %d, border %d", pos, min, max,
border);
maskp = mask->data;
width = GST_VIDEO_FRAME_WIDTH (out_frame);
height = GST_VIDEO_FRAME_HEIGHT (out_frame);
y_stride = GST_VIDEO_FRAME_COMP_STRIDE (in_frame, 0);
u_stride = GST_VIDEO_FRAME_COMP_STRIDE (in_frame, 1);
v_stride = GST_VIDEO_FRAME_COMP_STRIDE (in_frame, 2);
src_wrap = y_stride - width;
src_u_wrap = u_stride - (width / 2);
src_v_wrap = v_stride - (width / 2);
srcY = GST_VIDEO_FRAME_COMP_DATA (in_frame, 0);
srcU = GST_VIDEO_FRAME_COMP_DATA (in_frame, 1);
srcV = GST_VIDEO_FRAME_COMP_DATA (in_frame, 2);
out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
dest_wrap = GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0) - (width << 2);
odd_width = (width % 2 != 0);
for (i = 0; i < height; i++) {
for (j = 0; j < width / 2; j++) {
value = *maskp++;
*out++ = (0xff * ((CLAMP (value, min, max) - min) << 8) / border) >> 8;
*out++ = *srcY++;
*out++ = *srcU;
*out++ = *srcV;
value = *maskp++;
*out++ = (0xff * ((CLAMP (value, min, max) - min) << 8) / border) >> 8;
*out++ = *srcY++;
*out++ = *srcU++;
*out++ = *srcV++;
}
/* Might have one odd column left to do */
if (odd_width) {
value = *maskp++;
*out++ = (0xff * ((CLAMP (value, min, max) - min) << 8) / border) >> 8;
*out++ = *srcY++;
*out++ = *srcU;
*out++ = *srcV;
}
if (i % 2 == 0) {
srcU -= width / 2;
srcV -= width / 2;
} else {
srcU += src_u_wrap;
srcV += src_v_wrap;
}
srcY += src_wrap;
out += dest_wrap;
}
}
static void
gst_smpte_alpha_before_transform (GstBaseTransform * trans, GstBuffer * buf)
{
GstSMPTEAlpha *smpte = GST_SMPTE_ALPHA (trans);
GstClockTime timestamp, stream_time;
/* first sync the controller to the current stream_time of the buffer */
timestamp = GST_BUFFER_TIMESTAMP (buf);
stream_time =
gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);
GST_DEBUG_OBJECT (smpte, "sync to %" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (GST_OBJECT (smpte), stream_time);
}
static GstFlowReturn
gst_smpte_alpha_transform_frame (GstVideoFilter * vfilter,
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
GstSMPTEAlpha *smpte = GST_SMPTE_ALPHA (vfilter);
gdouble position;
gint border;
if (G_UNLIKELY (!smpte->process))
goto not_negotiated;
GST_OBJECT_LOCK (smpte);
position = smpte->position;
border = smpte->border;
/* run the type specific filter code */
smpte->process (smpte, in_frame, out_frame,
smpte->mask, border, ((1 << smpte->depth) + border) * position);
GST_OBJECT_UNLOCK (smpte);
return GST_FLOW_OK;
/* ERRORS */
not_negotiated:
{
GST_ELEMENT_ERROR (smpte, CORE, NEGOTIATION, (NULL),
("No input format negotiated"));
return GST_FLOW_NOT_NEGOTIATED;
}
}
static GstCaps *
gst_smpte_alpha_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * from, GstCaps * filter)
{
GstCaps *result, *tmp_caps, *tmpl_caps = NULL;
gint i, j;
tmp_caps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (from); i++) {
GstStructure *structure;
const GValue *val, *lval;
GValue list = { 0, };
GValue aval = { 0, };
const gchar *str;
structure = gst_structure_copy (gst_caps_get_structure (from, i));
/* we can transform I420 to AYUV,
* so need to locate and substitute AYUV for the both of them */
val = gst_structure_get_value (structure, "format");
if (val && GST_VALUE_HOLDS_LIST (val)) {
gboolean seen_ayuv = FALSE, seen_i420 = FALSE;
g_value_init (&list, GST_TYPE_LIST);
for (j = 0; j < gst_value_list_get_size (val); j++) {
lval = gst_value_list_get_value (val, j);
if ((str = g_value_get_string (lval))) {
if (strcmp (str, "AYUV") == 0) {
seen_ayuv = TRUE;
} else if (strcmp (str, "I420") == 0) {
seen_i420 = TRUE;
}
}
}
if (seen_ayuv && !seen_i420) {
str = "I420";
} else if (seen_i420 && !seen_ayuv) {
str = "AYUV";
} else
str = NULL;
if (str) {
g_value_copy (val, &list);
g_value_init (&aval, G_TYPE_STRING);
g_value_set_string (&aval, str);
gst_value_list_append_value (&list, &aval);
g_value_reset (&aval);
gst_structure_set_value (structure, "format", &list);
g_value_unset (&list);
}
} else if (val && G_VALUE_HOLDS_STRING (val)) {
if ((str = g_value_get_string (val)) &&
((strcmp (str, "AYUV") == 0) || (strcmp (str, "I420") == 0))) {
g_value_init (&list, GST_TYPE_LIST);
g_value_init (&aval, G_TYPE_STRING);
g_value_set_string (&aval, "AYUV");
gst_value_list_append_value (&list, &aval);
g_value_reset (&aval);
g_value_set_string (&aval, "I420");
gst_value_list_append_value (&list, &aval);
g_value_reset (&aval);
gst_structure_set_value (structure, "format", &list);
g_value_unset (&list);
}
} else {
gst_structure_remove_field (structure, "format");
}
gst_structure_remove_field (structure, "colorimetry");
gst_structure_remove_field (structure, "chroma-site");
gst_caps_append_structure (tmp_caps, structure);
}
/* Get the appropriate template */
if (direction == GST_PAD_SINK) {
tmpl_caps =
gst_static_pad_template_get_caps (&gst_smpte_alpha_src_template);
} else if (direction == GST_PAD_SRC) {
tmpl_caps =
gst_static_pad_template_get_caps (&gst_smpte_alpha_sink_template);
} else {
g_assert_not_reached ();
}
/* Intersect with our template caps */
result = gst_caps_intersect (tmp_caps, tmpl_caps);
gst_caps_unref (tmpl_caps);
gst_caps_unref (tmp_caps);
result = gst_caps_simplify (result);
GST_LOG_OBJECT (trans, "transformed %" GST_PTR_FORMAT " to %" GST_PTR_FORMAT,
from, result);
if (filter) {
GstCaps *intersection;
GST_DEBUG_OBJECT (trans, "Using filter caps %" GST_PTR_FORMAT, filter);
intersection =
gst_caps_intersect_full (filter, result, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (result);
result = intersection;
GST_DEBUG_OBJECT (trans, "Intersection %" GST_PTR_FORMAT, result);
}
return result;
}
static gboolean
gst_smpte_alpha_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
{
GstSMPTEAlpha *smpte = GST_SMPTE_ALPHA (vfilter);
gboolean ret;
smpte->process = NULL;
smpte->in_format = GST_VIDEO_INFO_FORMAT (in_info);
smpte->out_format = GST_VIDEO_INFO_FORMAT (out_info);
/* try to update the mask now, this will also adjust the width/height on
* success */
GST_OBJECT_LOCK (smpte);
ret =
gst_smpte_alpha_update_mask (smpte, smpte->type, smpte->invert,
smpte->depth, GST_VIDEO_INFO_WIDTH (out_info),
GST_VIDEO_INFO_HEIGHT (out_info));
GST_OBJECT_UNLOCK (smpte);
if (!ret)
goto mask_failed;
switch (smpte->out_format) {
case GST_VIDEO_FORMAT_AYUV:
switch (smpte->in_format) {
case GST_VIDEO_FORMAT_AYUV:
smpte->process = gst_smpte_alpha_process_ayuv_ayuv;
break;
case GST_VIDEO_FORMAT_I420:
smpte->process = gst_smpte_alpha_process_i420_ayuv;
break;
default:
break;
}
break;
case GST_VIDEO_FORMAT_ARGB:
switch (smpte->in_format) {
case GST_VIDEO_FORMAT_ARGB:
smpte->process = gst_smpte_alpha_process_argb_argb;
break;
default:
break;
}
break;
case GST_VIDEO_FORMAT_RGBA:
switch (smpte->in_format) {
case GST_VIDEO_FORMAT_RGBA:
smpte->process = gst_smpte_alpha_process_rgba_rgba;
break;
default:
break;
}
break;
case GST_VIDEO_FORMAT_ABGR:
switch (smpte->in_format) {
case GST_VIDEO_FORMAT_ABGR:
smpte->process = gst_smpte_alpha_process_abgr_abgr;
break;
default:
break;
}
break;
case GST_VIDEO_FORMAT_BGRA:
switch (smpte->in_format) {
case GST_VIDEO_FORMAT_BGRA:
smpte->process = gst_smpte_alpha_process_bgra_bgra;
break;
default:
break;
}
break;
default:
break;
}
return ret;
/* ERRORS */
mask_failed:
{
GST_ERROR_OBJECT (smpte, "failed creating the mask");
return FALSE;
}
}
static void
gst_smpte_alpha_finalize (GstSMPTEAlpha * smpte)
{
if (smpte->mask)
gst_mask_destroy (smpte->mask);
smpte->mask = NULL;
G_OBJECT_CLASS (parent_class)->finalize ((GObject *) smpte);
}
static void
gst_smpte_alpha_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstSMPTEAlpha *smpte = GST_SMPTE_ALPHA (object);
switch (prop_id) {
case PROP_TYPE:{
gint type;
type = g_value_get_enum (value);
GST_OBJECT_LOCK (smpte);
gst_smpte_alpha_update_mask (smpte, type, smpte->invert,
smpte->depth, smpte->width, smpte->height);
GST_OBJECT_UNLOCK (smpte);
break;
}
case PROP_BORDER:
GST_OBJECT_LOCK (smpte);
smpte->border = g_value_get_int (value);
GST_OBJECT_UNLOCK (smpte);
break;
case PROP_DEPTH:{
gint depth;
depth = g_value_get_int (value);
GST_OBJECT_LOCK (smpte);
gst_smpte_alpha_update_mask (smpte, smpte->type, smpte->invert,
depth, smpte->width, smpte->height);
GST_OBJECT_UNLOCK (smpte);
break;
}
case PROP_POSITION:
GST_OBJECT_LOCK (smpte);
smpte->position = g_value_get_double (value);
GST_OBJECT_UNLOCK (smpte);
break;
case PROP_INVERT:{
gboolean invert;
invert = g_value_get_boolean (value);
GST_OBJECT_LOCK (smpte);
gst_smpte_alpha_update_mask (smpte, smpte->type, invert,
smpte->depth, smpte->width, smpte->height);
GST_OBJECT_UNLOCK (smpte);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_smpte_alpha_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstSMPTEAlpha *smpte;
smpte = GST_SMPTE_ALPHA (object);
switch (prop_id) {
case PROP_TYPE:
GST_OBJECT_LOCK (smpte);
g_value_set_enum (value, smpte->type);
GST_OBJECT_UNLOCK (smpte);
break;
case PROP_BORDER:
GST_OBJECT_LOCK (smpte);
g_value_set_int (value, smpte->border);
GST_OBJECT_UNLOCK (smpte);
break;
case PROP_DEPTH:
GST_OBJECT_LOCK (smpte);
g_value_set_int (value, smpte->depth);
GST_OBJECT_UNLOCK (smpte);
break;
case PROP_POSITION:
GST_OBJECT_LOCK (smpte);
g_value_set_double (value, smpte->position);
GST_OBJECT_UNLOCK (smpte);
break;
case PROP_INVERT:
GST_OBJECT_LOCK (smpte);
g_value_set_boolean (value, smpte->invert);
GST_OBJECT_UNLOCK (smpte);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
gboolean
gst_smpte_alpha_plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_smpte_alpha_debug, "smptealpha", 0,
"SMPTE alpha effect");
return gst_element_register (plugin, "smptealpha", GST_RANK_NONE,
GST_TYPE_SMPTE_ALPHA);
}