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Added the base framework for the SMPTE transitions and wipes.

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Original commit message from CVS:
Added the base framework for the SMPTE transitions and wipes.
This commit is contained in:
Wim Taymans 2002-10-10 21:19:12 +00:00
parent 91dd5fe454
commit bc93903d01
8 changed files with 921 additions and 0 deletions
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14
gst/smpte/Makefile.am Normal file
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plugindir = $(libdir)/gst
plugin_LTLIBRARIES = libgstsmpte.la
libgstsmpte_la_SOURCES = gstsmpte.c gstmask.c barboxwipes.c paint.c
noinst_HEADERS = gstsmpte.h gstmask.h paint.h
libgstsmpte_la_CFLAGS = -O2 -ffast-math $(GST_CFLAGS)
libgstsmpte_la_LIBADD =
libgstsmpte_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
EXTRA_DIST =

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gst/smpte/barboxwipes.c Normal file
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "paint.h"
#include "gstmask.h"
static void
gst_bar_wipe_lr_update (GstMask *mask,
GstClockTime position,
GstClockTime duration)
{
gint width = mask->width;
gint height = mask->height;
gint split = (position * width) / duration;
gst_smpte_paint_rect (mask->data, width, split, 0, width - split, height, 0);
gst_smpte_paint_rect (mask->data, width, 0, 0, split, height, 255);
}
static void
gst_bar_wipe_tb_update (GstMask *mask,
GstClockTime position,
GstClockTime duration)
{
gint width = mask->width;
gint height = mask->height;
gint split = (position * height) / duration;
gst_smpte_paint_rect (mask->data, width, 0, 0, width, split, 255);
gst_smpte_paint_rect (mask->data, width, 0, split, width, height - split, 0);
}
static void
gst_box_wipe_update (GstMask *mask,
GstClockTime position,
GstClockTime duration)
{
static gint box_wipe_impacts[8][4] =
{
/* 3 -> 6 */
{ 0, 0, 0, 0 },
{ 2, 2, 0, 0 },
{ 2, 2, 2, 2 },
{ 0, 0, 2, 2 },
/* 23 -> 26 */
{ 1, 1, 0, 0 },
{ 2, 2, 1, 1 },
{ 1, 1, 2, 2 },
{ 0, 0, 1, 1 },
};
gint *impacts = box_wipe_impacts[(mask->type & 0x0F) - 3];
gint width = mask->width;
gint height = mask->height;
gint splitx = (position * width) / duration;
gint splity = (position * height) / duration;
gst_smpte_paint_rect (mask->data, width, 0, 0, width, height, 0);
gst_smpte_paint_rect (mask->data, width,
(impacts[0] * width)/2 - (impacts[1] * splitx)/2,
(impacts[2] * height)/2 - (impacts[3] * splity)/2,
splitx, splity, 255);
}
static void
gst_fourc_box_wipe_update (GstMask *mask,
GstClockTime position,
GstClockTime duration)
{
static gint box_wipe_impacts[8][4] =
{
{ 0, 0, 0, 0 },
{ 1, 1, 1, 1 },
{ 4, 2, 0, 0 },
{ 3, 1, 1, 1 },
{ 4, 2, 4, 2 },
{ 1, 1, 3, 1 },
{ 0, 0, 4, 2 },
{ 3, 1, 3, 1 },
};
gint *impacts;
gint width = mask->width;
gint height = mask->height;
gint splitx = (position * width/2) / duration;
gint splity = (position * height/2) / duration;
gint i;
gst_smpte_paint_rect (mask->data, width, 0, 0, width, height, 0);
for (i = 7; i > 0; i -= 2) {
impacts = box_wipe_impacts[mask->type - i];
gst_smpte_paint_rect (mask->data, width,
(impacts[0] * width)/4 - (impacts[1] * splitx)/2,
(impacts[2] * height)/4 - (impacts[3] * splity)/2,
splitx, splity, 255);
}
}
static GstMaskDefinition definitions[] = {
{ 1, "bar_wipe_lr", "A bar moves from left to right",
_gst_mask_default_new, _gst_mask_default_destroy, gst_bar_wipe_lr_update },
{ 2, "bar_wipe_tb", "A bar moves from top to bottom",
_gst_mask_default_new, _gst_mask_default_destroy, gst_bar_wipe_tb_update },
{ 3, "box_wipe_tl", "A box expands from the upper-left corner to the lower-right corner",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 4, "box_wipe_tr", "A box expands from the upper-right corner to the lower-left corner",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 5, "box_wipe_br", "A box expands from the lower-right corner to the upper-left corner",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 6, "box_wipe_bl", "A box expands from the lower-left corner to the upper-right corner",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 23, "box_wipe_tc", "A box expands from the top edge's midpoint to the bottom corners",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 24, "box_wipe_rc", "A box expands from the right edge's midpoint to the left corners",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 25, "box_wipe_bc", "A box expands from the bottom edge's midpoint to the top corners",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 26, "box_wipe_lc", "A box expands from the left edge's midpoint to the right corners",
_gst_mask_default_new, _gst_mask_default_destroy, gst_box_wipe_update },
{ 7 , "four_box_wipe_ci", "A box shape expands from each of the four corners toward the center",
_gst_mask_default_new, _gst_mask_default_destroy, gst_fourc_box_wipe_update },
{ 8 , "four_box_wipe_co", "A box shape expands from the center of each quadrant toward the corners of each quadrant",
_gst_mask_default_new, _gst_mask_default_destroy, gst_fourc_box_wipe_update },
{ 0, NULL, NULL, NULL }
};
void
_gst_barboxwipes_register (void)
{
gint i = 0;
while (definitions[i].short_name) {
_gst_mask_register (&definitions[i]);
i++;
}
}

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gstmask.h"
extern void _gst_barboxwipes_register (void);
static GList *masks = NULL;
void
_gst_mask_init (void)
{
_gst_barboxwipes_register ();
}
static gint
gst_mask_compare (GstMaskDefinition *def1,
GstMaskDefinition *def2)
{
return (def1->type - def2->type);
}
void
_gst_mask_register (GstMaskDefinition *definition)
{
masks = g_list_insert_sorted (masks, definition, (GCompareFunc) gst_mask_compare);
}
const GList*
gst_mask_get_definitions (void)
{
return masks;
}
static GstMaskDefinition*
gst_mask_find_definition (gint type)
{
GList *walk = masks;
while (walk) {
GstMaskDefinition *def = (GstMaskDefinition *) walk->data;
if (def->type == type)
return def;
walk = g_list_next (walk);
}
return NULL;
}
GstMask*
gst_mask_factory_new (gint type, gint bpp, gint width, gint height)
{
GstMaskDefinition *definition;
GstMask *mask = NULL;
definition = gst_mask_find_definition (type);
if (definition) {
mask = definition->new_func (definition, bpp, width, height);
}
return mask;
}
GstMask*
_gst_mask_default_new (GstMaskDefinition *definition,
gint bpp, gint width, gint height)
{
GstMask *mask;
mask = g_new0 (GstMask, 1);
mask->type = definition->type;
mask->bpp = bpp;
mask->width = width;
mask->height = height;
mask->update_func = definition->update_func;
mask->destroy_func = definition->destroy_func;
mask->data = g_malloc (width * height * (bpp+7)>>3);
return mask;
}
void
_gst_mask_default_destroy (GstMask *mask)
{
g_free (mask->data);
g_free (mask);
}
void
gst_mask_destroy (GstMask *mask)
{
if (mask->destroy_func)
mask->destroy_func (mask);
}
void
gst_mask_update (GstMask *mask,
GstClockTime position,
GstClockTime duration)
{
g_return_if_fail (mask != NULL);
if (mask->update_func)
mask->update_func (mask, position, duration);
}

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_MASK_H__
#define __GST_MASK_H__
#include <gst/gst.h>
typedef struct _GstMask GstMask;
typedef struct _GstMaskDefinition GstMaskDefinition;
typedef GstMask* (*GstMaskNewFunc) (GstMaskDefinition *definition,
gint bpp, gint width, gint height);
typedef void (*GstMaskDestroyFunc) (GstMask *mask);
typedef void (*GstMaskUpdateFunc) (GstMask *mask,
GstClockTime position,
GstClockTime duration);
struct _GstMaskDefinition {
gint type;
gchar *short_name;
gchar *long_name;
GstMaskNewFunc new_func;
GstMaskDestroyFunc destroy_func;
GstMaskUpdateFunc update_func;
};
struct _GstMask {
gint type;
guint8 *data;
gint width;
gint height;
gint bpp;
GstMaskUpdateFunc update_func;
GstMaskDestroyFunc destroy_func;
};
void _gst_mask_init (void);
void _gst_mask_register (GstMaskDefinition *definition);
GstMask* _gst_mask_default_new (GstMaskDefinition *definition,
gint bpp, gint width, gint height);
void _gst_mask_default_destroy (GstMask *mask);
const GList* gst_mask_get_definitions (void);
GstMask* gst_mask_factory_new (gint type, gint bpp, gint width, gint height);
void gst_mask_destroy (GstMask *mask);
void gst_mask_update (GstMask *mask,
GstClockTime position,
GstClockTime duration);
#endif /* __GST_MASK_H__ */

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gst/smpte/gstsmpte.c Normal file
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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include <gstsmpte.h>
#include "paint.h"
/* elementfactory information */
static GstElementDetails smpte_details = {
"SMPTE transitions",
"Filter/Video",
"LGPL",
"Apply the standard SMPTE transitions on video images",
VERSION,
"Wim Taymans <wim.taymans@chello.be>",
"(C) 2002",
};
GST_PAD_TEMPLATE_FACTORY (smpte_src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"smpte_src",
"video/raw",
"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420"))
)
)
GST_PAD_TEMPLATE_FACTORY (smpte_sink1_factory,
"sink1",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"smpte_sink1",
"video/raw",
"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
"width", GST_PROPS_INT_RANGE (0, 4096),
"height", GST_PROPS_INT_RANGE (0, 4096)
)
)
GST_PAD_TEMPLATE_FACTORY (smpte_sink2_factory,
"sink2",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"smpte_sink2",
"video/raw",
"format", GST_PROPS_FOURCC (GST_STR_FOURCC ("I420")),
"width", GST_PROPS_INT_RANGE (0, 4096),
"height", GST_PROPS_INT_RANGE (0, 4096)
)
)
/* SMPTE signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_TYPE,
};
#define GST_TYPE_SMPTE_TRANSITION_TYPE (gst_smpte_transition_type_get_type())
static GType
gst_smpte_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;
smpte_transitions[i].value_name = definition->short_name;
smpte_transitions[i].value_nick = definition->long_name;
i++;
}
smpte_transition_type = g_enum_register_static ("GstSMPTETransitionType", smpte_transitions);
}
return smpte_transition_type;
}
static void gst_smpte_class_init (GstSMPTEClass *klass);
static void gst_smpte_init (GstSMPTE *smpte);
static void gst_smpte_loop (GstElement *element);
static void gst_smpte_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_smpte_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstElementClass *parent_class = NULL;
/*static guint gst_smpte_signals[LAST_SIGNAL] = { 0 }; */
static GType
gst_smpte_get_type (void)
{
static GType smpte_type = 0;
if (!smpte_type) {
static const GTypeInfo smpte_info = {
sizeof(GstSMPTEClass),
NULL,
NULL,
(GClassInitFunc)gst_smpte_class_init,
NULL,
NULL,
sizeof(GstSMPTE),
0,
(GInstanceInitFunc)gst_smpte_init,
};
smpte_type = g_type_register_static(GST_TYPE_ELEMENT, "GstSMPTE", &smpte_info, 0);
}
return smpte_type;
}
static void
gst_smpte_class_init (GstSMPTEClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
gobject_class->set_property = gst_smpte_set_property;
gobject_class->get_property = gst_smpte_get_property;
_gst_mask_init ();
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TYPE,
g_param_spec_enum ("type", "Type", "The type of transition to use",
GST_TYPE_SMPTE_TRANSITION_TYPE, 1, G_PARAM_READWRITE));
}
/* wht yel cya grn mag red blu blk -I Q */
static int y_colors[] = { 255, 226, 179, 150, 105, 76, 29, 16, 16, 0 };
static int u_colors[] = { 128, 0, 170, 46, 212, 85, 255, 128, 0, 128 };
static int v_colors[] = { 128, 155, 0, 21, 235, 255, 107, 128, 128, 255 };
static void
fill_i420 (guint8 *data, gint width, gint height, gint color)
{
guint8 *yp = data;
guint8 *up = data + width * height;
guint8 *vp = data + width * height + (width * height) / 4;
gst_smpte_paint_rect (yp, width, 0, 0, width, height, y_colors[color]);
gst_smpte_paint_rect (up, width/2, 0, 0, width/2, height/2, u_colors[color]);
gst_smpte_paint_rect (vp, width/2, 0, 0, width/2, height/2, v_colors[color]);
}
static gboolean
gst_smpte_sinkconnect (GstPad *pad, GstCaps *caps)
{
GstSMPTE *smpte;
smpte = GST_SMPTE (gst_pad_get_parent (pad));
if (!GST_CAPS_IS_FIXED (caps))
return GST_PAD_CONNECT_DELAYED;
gst_caps_get_int (caps, "width", &smpte->width);
gst_caps_get_int (caps, "height", &smpte->height);
smpte->mask = gst_mask_factory_new (smpte->type, 8, smpte->width, smpte->height);
/* forward to the next plugin */
return gst_pad_try_set_caps(smpte->srcpad, gst_caps_copy_1(caps));
}
static void
gst_smpte_init (GstSMPTE *smpte)
{
smpte->sinkpad1 = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (smpte_sink1_factory), "sink1");
gst_pad_set_connect_function (smpte->sinkpad1, gst_smpte_sinkconnect);
gst_element_add_pad (GST_ELEMENT (smpte), smpte->sinkpad1);
smpte->sinkpad2 = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (smpte_sink2_factory), "sink2");
gst_pad_set_connect_function (smpte->sinkpad2, gst_smpte_sinkconnect);
gst_element_add_pad (GST_ELEMENT (smpte), smpte->sinkpad2);
smpte->srcpad = gst_pad_new_from_template (
GST_PAD_TEMPLATE_GET (smpte_src_factory), "src");
gst_element_add_pad (GST_ELEMENT (smpte), smpte->srcpad);
gst_element_set_loop_function (GST_ELEMENT (smpte), gst_smpte_loop);
smpte->width = 320;
smpte->height = 200;
smpte->duration = 64;
smpte->position = 0;
smpte->type = 1;
smpte->mask = gst_mask_factory_new (smpte->type, 8, smpte->width, smpte->height);
}
static void
gst_smpte_blend_i420 (guint8 *in1, guint8 *in2, guint8 *out, GstMask *mask,
gint width, gint height)
{
gint i, j;
guint8 *maskporig, *maskp;
guint8 *in1u, *in1v, *in2u, *in2v, *outu, *outv;
guint8 value;
gint chromsize = (width * height) >> 2;
maskp = maskporig = mask->data;
for (i = width * height; i; i--) {
value = *maskp++;
*out++ = ((*in2++ * value) + (*in1++ * (255 - value))) >> 8;
}
in1u = in1; in1v = in1 + chromsize;
in2u = in2; in2v = in2 + chromsize;
outu = out; outv = out + chromsize;
maskp = maskporig;
for (i = height/2; i; i--, maskp += width) {
for (j = width/2; j; j--, maskp += 2) {
value = *maskp;
*outu++ = ((*in2u++ * value) + (*in1u++ * (255 - value))) >> 8;
*outv++ = ((*in2v++ * value) + (*in1v++ * (255 - value))) >> 8;
}
}
}
static void
gst_smpte_loop (GstElement *element)
{
GstSMPTE *smpte;
GstBuffer *outbuf;
GstClockTime ts;
GstBuffer *in1 = NULL, *in2 = NULL;
smpte = GST_SMPTE (element);
ts = smpte->position * GST_SECOND;
if (GST_PAD_IS_USABLE (smpte->sinkpad1)) {
in1 = gst_pad_pull (smpte->sinkpad1);
ts = GST_BUFFER_TIMESTAMP (in1);
}
else {
in1 = gst_buffer_new_and_alloc (smpte->width * smpte->height * 3);
fill_i420 (GST_BUFFER_DATA (in1), smpte->width, smpte->height, 7);
}
if (GST_PAD_IS_USABLE (smpte->sinkpad2)) {
in2 = gst_pad_pull (smpte->sinkpad2);
ts = GST_BUFFER_TIMESTAMP (in2);
}
else {
in2 = gst_buffer_new_and_alloc (smpte->width * smpte->height * 3);
fill_i420 (GST_BUFFER_DATA (in2), smpte->width, smpte->height, 0);
}
if (smpte->position < smpte->duration) {
outbuf = gst_buffer_new_and_alloc (smpte->width * smpte->height * 3);
if (!GST_PAD_CAPS (smpte->srcpad)) {
if (!gst_pad_try_set_caps (smpte->srcpad,
GST_CAPS_NEW (
"smpte_srccaps",
"video/raw",
"format", GST_PROPS_FOURCC (GST_MAKE_FOURCC ('I','4','2','0')),
"width", GST_PROPS_INT (smpte->width),
"height", GST_PROPS_INT (smpte->height)
)))
{
gst_element_error (element, "cannot set caps");
return;
}
}
gst_mask_update (smpte->mask, smpte->position, smpte->duration);
gst_smpte_blend_i420 (GST_BUFFER_DATA (in1), GST_BUFFER_DATA (in2), GST_BUFFER_DATA (outbuf),
smpte->mask, smpte->width, smpte->height);
}
else {
outbuf = in2;
gst_buffer_ref (in2);
}
smpte->position++;
if (in1)
gst_buffer_unref (in1);
if (in2)
gst_buffer_unref (in2);
GST_BUFFER_TIMESTAMP (outbuf) = ts;
gst_pad_push (smpte->srcpad, outbuf);
}
static void
gst_smpte_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
GstSMPTE *smpte;
smpte = GST_SMPTE(object);
switch (prop_id) {
case ARG_TYPE:
{
GstMask *newmask;
gint type = g_value_get_enum (value);
newmask = gst_mask_factory_new (type, 8, smpte->width, smpte->height);
if (newmask) {
if (smpte->mask) {
gst_mask_destroy (smpte->mask);
}
smpte->mask = newmask;
smpte->type = type;
}
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_smpte_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
GstSMPTE *smpte;
smpte = GST_SMPTE(object);
switch (prop_id) {
case ARG_TYPE:
if (smpte->mask) {
g_value_set_enum (value, smpte->mask->type);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
factory = gst_element_factory_new("smpte",GST_TYPE_SMPTE,
&smpte_details);
g_return_val_if_fail(factory != NULL, FALSE);
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (smpte_sink1_factory));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (smpte_sink2_factory));
gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (smpte_src_factory));
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"smpte",
plugin_init
};

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_SMPTE_H__
#define __GST_SMPTE_H__
#include <gst/gst.h>
#include <gstmask.h>
#define GST_TYPE_SMPTE \
(gst_smpte_get_type())
#define GST_SMPTE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SMPTE,GstSMPTE))
#define GST_SMPTE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SMPTE,GstSMPTE))
#define GST_IS_SMPTE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SMPTE))
#define GST_IS_SMPTE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SMPTE))
typedef struct _GstSMPTE GstSMPTE;
typedef struct _GstSMPTEClass GstSMPTEClass;
struct _GstSMPTE {
GstElement element;
gint format;
gint width;
gint height;
gint duration;
gint position;
GstPad *srcpad,
*sinkpad1,
*sinkpad2;
gint type;
GstMask *mask;
};
struct _GstSMPTEClass {
GstElementClass parent_class;
};
#endif /* __GST_SMPTE_H__ */

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "paint.h"
void
gst_smpte_paint_rect (guint8 *dest, gint stride, gint x, gint y, gint w, gint h, guint8 color)
{
guint8 *d = dest + stride * y + x;
gint i;
for (i = 0; i < h; i++) {
memset (d, color, w);
d += stride;
}
}
void
gst_smpte_paint_rect_s (guint8 *dest, gint stride, gint x, gint y, gint w, gint h, guint8 color)
{
guint8 *d = dest + stride * y + x;
gint i, j;
gint border = 100;
for (i = 0; i < h; i++) {
if (w - border > 0) {
memset (d, color, w - border);
}
for (j = 0; j < border - w; j++) {
*(d+w+j) = (color*(border-j)/border);
}
d += stride;
}
}

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_SMPTE_PAINT_H__
#define __GST_SMPTE_PAINT_H__
#include <glib.h>
void gst_smpte_paint_rect (guint8 *dest, gint stride,
gint x, gint y, gint w, gint h,
guint8 color);
void gst_smpte_paint_rect_s (guint8 *dest, gint stride,
gint x, gint y, gint w, gint h,
guint8 color);
#endif /* __GST_SMPTE_PAINT_H__ */