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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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