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/*
* Copyright (C) 2005 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: fill.c,v 1.1 2005/07/18 18:02:51 jstembridge Exp $
*
* fill video filter by James Stembridge (jstembridge@gmail.com)
*
* based on invert.c
*
*/
#include "xine_internal.h"
#include "post.h"
/* plugin class initialization function */
void *fill_init_plugin(xine_t *xine, void *);
/* plugin class functions */
static post_plugin_t *fill_open_plugin(post_class_t *class_gen, int inputs,
xine_audio_port_t **audio_target,
xine_video_port_t **video_target);
static char *fill_get_identifier(post_class_t *class_gen);
static char *fill_get_description(post_class_t *class_gen);
static void fill_class_dispose(post_class_t *class_gen);
/* plugin instance functions */
static void fill_dispose(post_plugin_t *this_gen);
/* replaced video port functions */
static vo_frame_t *fill_get_frame(xine_video_port_t *port_gen, uint32_t width,
uint32_t height, double ratio,
int format, int flags);
static int fill_draw(vo_frame_t *frame, xine_stream_t *stream);
void *fill_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 = fill_open_plugin;
class->get_identifier = fill_get_identifier;
class->get_description = fill_get_description;
class->dispose = fill_class_dispose;
return class;
}
static post_plugin_t *fill_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->new_port.get_frame = fill_get_frame;
port->new_frame->draw = fill_draw;
input->xine_in.name = "video";
output->xine_out.name = "cropped video";
this->xine_post.video_input[0] = &port->new_port;
this->dispose = fill_dispose;
return this;
}
static char *fill_get_identifier(post_class_t *class_gen)
{
return "fill";
}
static char *fill_get_description(post_class_t *class_gen)
{
return "crops left and right of video to fill 4:3 aspect ratio";
}
static void fill_class_dispose(post_class_t *class_gen)
{
free(class_gen);
}
static void fill_dispose(post_plugin_t *this)
{
if (_x_post_dispose(this))
free(this);
}
static vo_frame_t *fill_get_frame(xine_video_port_t *port_gen, uint32_t width,
uint32_t height, double ratio,
int format, int flags)
{
post_video_port_t *port = (post_video_port_t *)port_gen;
post_plugin_t *this = port->post;
vo_frame_t *frame;
_x_post_rewire(this);
if (ratio <= 0.0) ratio = (double)width / (double)height;
if ((ratio > 4.0/3.0) &&
(format == XINE_IMGFMT_YV12 || format == XINE_IMGFMT_YUY2)) {
frame = port->original_port->get_frame(port->original_port,
width, height, 4.0/3.0, format, flags);
_x_post_inc_usage(port);
frame = _x_post_intercept_video_frame(frame, port);
frame->ratio = ratio;
} else {
frame = port->original_port->get_frame(port->original_port,
width, height, ratio, format, flags);
/* no need to intercept this one, we are not going to do anything with it */
}
return frame;
}
static int fill_draw(vo_frame_t *frame, xine_stream_t *stream)
{
int skip, new_width;
new_width = (4.0*frame->width) / (3.0*frame->ratio);
frame->crop_left += (frame->width - new_width) / 2;
frame->crop_right += (frame->width + 1 - new_width) / 2;
frame->ratio = 4.0/3.0;
_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;
}
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