gstreamer/gst/smpte/gstsmptealpha.c
Thibault Saunier 802a270126 smptealpha: Do not set width/height before comparing with old values
Otherwise we end up considering the values did not change and we wrongly
work with the old video format (which will lead to wrong
behaviour/segfaults).

https://bugzilla.gnome.org/show_bug.cgi?id=755621
2015-09-25 14:20:13 +02:00

811 lines
24 KiB
C

/* 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_pad_template (element_class,
gst_static_pad_template_get (&gst_smpte_alpha_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&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);
}