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/* Libvisual-plugins - Standard plugins for libvisual
*
* Copyright (C) 2004, 2005, 2006 Dennis Smit <ds@nerds-incorporated.org>
*
* Authors: Dennis Smit <ds@nerds-incorporated.org>
*
* $Id: morph_flash.c,v 1.21 2006/01/27 20:19:18 synap Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <libvisual/libvisual.h>
typedef struct {
uint16_t b:5, g:6, r:5;
} _color16;
typedef struct {
VisPalette whitepal;
uint8_t replacetable[256];
} FlashPrivate;
static void replacetable_generate_24 (FlashPrivate *priv, float rate);
static void flash_8 (FlashPrivate *priv, float rate, VisVideo *dest, VisVideo *src1, VisVideo *src2);
static void flash_24 (FlashPrivate *priv, float rate, VisVideo *dest, VisVideo *src1, VisVideo *src2);
int lv_morph_flash_init (VisPluginData *plugin);
int lv_morph_flash_cleanup (VisPluginData *plugin);
int lv_morph_flash_palette (VisPluginData *plugin, float rate, VisAudio *audio, VisPalette *pal, VisVideo *src1, VisVideo *src2);
int lv_morph_flash_apply (VisPluginData *plugin, float rate, VisAudio *audio, VisVideo *dest, VisVideo *src1, VisVideo *src2);
VISUAL_PLUGIN_API_VERSION_VALIDATOR
const VisPluginInfo *get_plugin_info (int *count)
{
static VisMorphPlugin morph[] = {{
.palette = lv_morph_flash_palette,
.apply = lv_morph_flash_apply,
.vidoptions.depth =
VISUAL_VIDEO_DEPTH_8BIT |
VISUAL_VIDEO_DEPTH_16BIT |
VISUAL_VIDEO_DEPTH_24BIT |
VISUAL_VIDEO_DEPTH_32BIT
}};
static VisPluginInfo info[] = {{
.type = VISUAL_PLUGIN_TYPE_MORPH,
.plugname = "flash",
.name = "flash morph",
.author = "Dennis Smit <ds@nerds-incorporated.org>",
.version = "0.1",
.about = "An flash in and out morph plugin",
.help = "This morph plugin morphs between two video sources using a bright flash",
.license = VISUAL_PLUGIN_LICENSE_LGPL,
.init = lv_morph_flash_init,
.cleanup = lv_morph_flash_cleanup,
.plugin = VISUAL_OBJECT (&morph[0])
}};
*count = sizeof (info) / sizeof (*info);
return info;
}
int lv_morph_flash_init (VisPluginData *plugin)
{
int i;
FlashPrivate *priv;
priv = visual_mem_new0 (FlashPrivate, 1);
visual_object_set_private (VISUAL_OBJECT (plugin), priv);
visual_palette_allocate_colors (&priv->whitepal, 256);
for (i = 0; i < 256; i++) {
priv->whitepal.colors[i].r = 0xff;
priv->whitepal.colors[i].g = 0xff;
priv->whitepal.colors[i].b = 0xff;
}
return 0;
}
int lv_morph_flash_cleanup (VisPluginData *plugin)
{
FlashPrivate *priv = visual_object_get_private (VISUAL_OBJECT (plugin));
visual_mem_free (priv);
return 0;
}
int lv_morph_flash_palette (VisPluginData *plugin, float rate, VisAudio *audio, VisPalette *pal, VisVideo *src1, VisVideo *src2)
{
FlashPrivate *priv = visual_object_get_private (VISUAL_OBJECT (plugin));
if (src1->pal == NULL || src2->pal == NULL)
return -1;
if (rate < 0.5)
visual_palette_blend (pal, src1->pal, &priv->whitepal, rate * 2);
else
visual_palette_blend (pal, &priv->whitepal, src2->pal, (rate - 0.5) * 2);
return 0;
}
int lv_morph_flash_apply (VisPluginData *plugin, float rate, VisAudio *audio, VisVideo *dest, VisVideo *src1, VisVideo *src2)
{
FlashPrivate *priv = visual_object_get_private (VISUAL_OBJECT (plugin));
switch (dest->depth) {
case VISUAL_VIDEO_DEPTH_8BIT:
flash_8 (priv, rate, dest, src1, src2);
break;
case VISUAL_VIDEO_DEPTH_16BIT:
break;
case VISUAL_VIDEO_DEPTH_24BIT:
replacetable_generate_24 (priv, rate);
flash_24 (priv, rate, dest, src1, src2);
break;
case VISUAL_VIDEO_DEPTH_32BIT:
replacetable_generate_24 (priv, rate);
flash_24 (priv, rate, dest, src1, src2);
break;
default:
break;
}
return 0;
}
static void replacetable_generate_24 (FlashPrivate *priv, float rate)
{
int i;
for (i = 0; i < 256; i++) {
if (rate < 0.5)
priv->replacetable[i] = i + (((255.00 - i) / 100.00) * ((rate * 2) * 100));
else
priv->replacetable[i] = i + (((255.00 - i) / 100.00) * ((1.0 - ((rate - 0.5) * 2)) * 100));
}
}
static void flash_8 (FlashPrivate *priv, float rate, VisVideo *dest, VisVideo *src1, VisVideo *src2)
{
if (rate < 0.5)
visual_mem_copy (visual_video_get_pixels (dest), visual_video_get_pixels (src1), visual_video_get_size (src1));
else
visual_mem_copy (visual_video_get_pixels (dest), visual_video_get_pixels (src2), visual_video_get_size (src2));
}
static void flash_24 (FlashPrivate *priv, float rate, VisVideo *dest, VisVideo *src1, VisVideo *src2)
{
uint8_t *scrbuf;
uint8_t *destbuf = visual_video_get_pixels (dest);
int size;
int i;
if (rate < 0.5) {
scrbuf = visual_video_get_pixels (src1);
size = visual_video_get_size (src1);
} else {
scrbuf = visual_video_get_pixels (src2);
size = visual_video_get_size (src2);
}
for (i = 0; i < size; i++)
destbuf[i] = priv->replacetable[scrbuf[i]];
}
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