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/*
* Copyright (C) 2000-2004 the xine project
*
* This file is part of xine, a free video player.
*
* xine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* xine 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 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
*
* $Id: invert.c,v 1.20 2004/04/17 19:54:32 mroi Exp $
*/
/*
* simple video inverter plugin
*/
#include "xine_internal.h"
#include "post.h"
/* plugin class initialization function */
void *invert_init_plugin(xine_t *xine, void *);
/* plugin class functions */
static post_plugin_t *invert_open_plugin(post_class_t *class_gen, int inputs,
xine_audio_port_t **audio_target,
xine_video_port_t **video_target);
static char *invert_get_identifier(post_class_t *class_gen);
static char *invert_get_description(post_class_t *class_gen);
static void invert_class_dispose(post_class_t *class_gen);
/* plugin instance functions */
static void invert_dispose(post_plugin_t *this_gen);
/* frame intercept check */
static int invert_intercept_frame(post_video_port_t *port, vo_frame_t *frame);
/* replaced vo_frame functions */
static int invert_draw(vo_frame_t *frame, xine_stream_t *stream);
void *invert_init_plugin(xine_t *xine, void *data)
{
post_class_t *class = (post_class_t *)malloc(sizeof(post_class_t));
if (!class)
return NULL;
class->open_plugin = invert_open_plugin;
class->get_identifier = invert_get_identifier;
class->get_description = invert_get_description;
class->dispose = invert_class_dispose;
return class;
}
static post_plugin_t *invert_open_plugin(post_class_t *class_gen, int inputs,
xine_audio_port_t **audio_target,
xine_video_port_t **video_target)
{
post_plugin_t *this = (post_plugin_t *)xine_xmalloc(sizeof(post_plugin_t));
post_in_t *input;
post_out_t *output;
post_video_port_t *port;
if (!this || !video_target || !video_target[0]) {
free(this);
return NULL;
}
_x_post_init(this, 0, 1);
port = _x_post_intercept_video_port(this, video_target[0], &input, &output);
port->intercept_frame = invert_intercept_frame;
port->new_frame->draw = invert_draw;
input->xine_in.name = "video";
output->xine_out.name = "inverted video";
this->xine_post.video_input[0] = &port->new_port;
this->dispose = invert_dispose;
return this;
}
static char *invert_get_identifier(post_class_t *class_gen)
{
return "invert";
}
static char *invert_get_description(post_class_t *class_gen)
{
return "inverts the colours of every video frame";
}
static void invert_class_dispose(post_class_t *class_gen)
{
free(class_gen);
}
static void invert_dispose(post_plugin_t *this)
{
if (_x_post_dispose(this))
free(this);
}
static int invert_intercept_frame(post_video_port_t *port, vo_frame_t *frame)
{
return (frame->format == XINE_IMGFMT_YV12 || frame->format == XINE_IMGFMT_YUY2);
}
static int invert_draw(vo_frame_t *frame, xine_stream_t *stream)
{
post_video_port_t *port = (post_video_port_t *)frame->port;
vo_frame_t *inverted_frame;
int size, i, skip;
if (frame->bad_frame) {
_x_post_frame_copy_down(frame, frame->next);
skip = frame->next->draw(frame->next, stream);
_x_post_frame_copy_up(frame, frame->next);
return skip;
}
inverted_frame = port->original_port->get_frame(port->original_port,
frame->width, frame->height, frame->ratio, frame->format, frame->flags | VO_BOTH_FIELDS);
_x_post_frame_copy_down(frame, inverted_frame);
switch (inverted_frame->format) {
case XINE_IMGFMT_YUY2:
size = inverted_frame->pitches[0] * inverted_frame->height;
for (i = 0; i < size; i++)
inverted_frame->base[0][i] = 0xff - frame->base[0][i];
break;
case XINE_IMGFMT_YV12:
/* Y */
size = inverted_frame->pitches[0] * inverted_frame->height;
for (i = 0; i < size; i++)
inverted_frame->base[0][i] = 0xff - frame->base[0][i];
/* U */
size = inverted_frame->pitches[1] * ((inverted_frame->height + 1) / 2);
for (i = 0; i < size; i++)
inverted_frame->base[1][i] = 0xff - frame->base[1][i];
/* V */
size = inverted_frame->pitches[2] * ((inverted_frame->height + 1) / 2);
for (i = 0; i < size; i++)
inverted_frame->base[2][i] = 0xff - frame->base[2][i];
break;
}
skip = inverted_frame->draw(inverted_frame, stream);
_x_post_frame_copy_up(frame, inverted_frame);
inverted_frame->free(inverted_frame);
return skip;
}
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