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/*
* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <assert.h>
#include <libavutil/common.h>
#include "config.h"
#include "core/mp_msg.h"
#include "core/options.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "vf.h"
#include "sub/sub.h"
#include "sub/dec_sub.h"
#include "video/sws_utils.h"
#include "video/memcpy_pic.h"
#include "video/csputils.h"
#include "core/m_option.h"
#include "core/m_struct.h"
static const struct vf_priv_s {
int opt_top_margin, opt_bottom_margin;
int outh, outw;
struct mp_csp_details csp;
struct osd_state *osd;
struct mp_osd_res dim;
} vf_priv_dflt = {
.csp = MP_CSP_DETAILS_DEFAULTS,
};
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt)
{
vf->priv->outh = height + vf->priv->opt_top_margin +
vf->priv->opt_bottom_margin;
vf->priv->outw = width;
double dar = (double)d_width / d_height;
double sar = (double)width / height;
vf_rescale_dsize(&d_width, &d_height, width, height,
vf->priv->outw, vf->priv->outh);
vf->priv->dim = (struct mp_osd_res) {
.w = vf->priv->outw,
.h = vf->priv->outh,
.mt = vf->priv->opt_top_margin,
.mb = vf->priv->opt_bottom_margin,
.display_par = sar / dar,
.video_par = dar / sar,
};
return vf_next_config(vf, vf->priv->outw, vf->priv->outh, d_width,
d_height, flags, outfmt);
}
static void prepare_image(struct vf_instance *vf, struct mp_image *dmpi,
struct mp_image *mpi)
{
int y1 = MP_ALIGN_DOWN(vf->priv->opt_top_margin, mpi->fmt.align_y);
int y2 = MP_ALIGN_DOWN(y1 + mpi->h, mpi->fmt.align_y);
struct mp_image cropped = *dmpi;
mp_image_crop(&cropped, 0, y1, mpi->w, y1 + mpi->h);
mp_image_copy(&cropped, mpi);
mp_image_clear(dmpi, 0, 0, dmpi->w, y1);
mp_image_clear(dmpi, 0, y2, dmpi->w, vf->priv->outh);
}
static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
{
struct vf_priv_s *priv = vf->priv;
struct osd_state *osd = priv->osd;
if (vf->priv->opt_top_margin || vf->priv->opt_bottom_margin) {
struct mp_image *dmpi = vf_alloc_out_image(vf);
mp_image_copy_attributes(dmpi, mpi);
prepare_image(vf, dmpi, mpi);
talloc_free(mpi);
mpi = dmpi;
}
mp_image_set_colorspace_details(mpi, &priv->csp);
osd_draw_on_image_p(osd, priv->dim, mpi->pts, OSD_DRAW_SUB_FILTER,
vf->out_pool, mpi);
return mpi;
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
if (!mp_sws_supported_format(fmt))
return 0;
return vf_next_query_format(vf, fmt);
}
static int control(vf_instance_t *vf, int request, void *data)
{
switch (request) {
case VFCTRL_SET_OSD_OBJ:
vf->priv->osd = data;
break;
case VFCTRL_INIT_OSD:
return CONTROL_TRUE;
case VFCTRL_SET_YUV_COLORSPACE: {
struct mp_csp_details colorspace = *(struct mp_csp_details *)data;
vf->priv->csp = colorspace;
break;
}
}
return vf_next_control(vf, request, data);
}
static int vf_open(vf_instance_t *vf, char *args)
{
vf->config = config;
vf->query_format = query_format;
vf->control = control;
vf->filter = filter;
return 1;
}
#define ST_OFF(f) M_ST_OFF(struct vf_priv_s, f)
static const m_option_t vf_opts_fields[] = {
{"bottom-margin", ST_OFF(opt_bottom_margin),
CONF_TYPE_INT, M_OPT_RANGE, 0, 2000},
{"top-margin", ST_OFF(opt_top_margin),
CONF_TYPE_INT, M_OPT_RANGE, 0, 2000},
{0},
};
static const m_struct_t vf_opts = {
"sub",
sizeof(struct vf_priv_s),
&vf_priv_dflt,
vf_opts_fields
};
const vf_info_t vf_info_sub = {
"Render subtitles",
"sub",
"Evgeniy Stepanov",
"",
vf_open,
&vf_opts
};
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