mirror of https://github.com/mpv-player/mpv
155 lines
4.3 KiB
C
155 lines
4.3 KiB
C
/*
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* Copyright (C) 2006 Evgeniy Stepanov <eugeni.stepanov@gmail.com>
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*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <assert.h>
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#include <libavutil/common.h>
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#include "config.h"
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#include "common/msg.h"
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#include "options/options.h"
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#include "video/img_format.h"
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#include "video/mp_image.h"
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#include "vf.h"
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#include "sub/osd.h"
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#include "sub/dec_sub.h"
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#include "video/sws_utils.h"
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#include "video/memcpy_pic.h"
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#include "options/m_option.h"
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struct vf_priv_s {
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int opt_top_margin, opt_bottom_margin;
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int outh, outw;
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struct osd_state *osd;
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struct mp_osd_res dim;
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};
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static int config(struct vf_instance *vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt)
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{
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vf->priv->outh = height + vf->priv->opt_top_margin +
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vf->priv->opt_bottom_margin;
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vf->priv->outw = width;
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double dar = (double)d_width / d_height;
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double sar = (double)width / height;
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vf_rescale_dsize(&d_width, &d_height, width, height,
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vf->priv->outw, vf->priv->outh);
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vf->priv->dim = (struct mp_osd_res) {
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.w = vf->priv->outw,
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.h = vf->priv->outh,
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.mt = vf->priv->opt_top_margin,
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.mb = vf->priv->opt_bottom_margin,
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.display_par = sar / dar,
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};
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return vf_next_config(vf, vf->priv->outw, vf->priv->outh, d_width,
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d_height, flags, outfmt);
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}
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static void prepare_image(struct vf_instance *vf, struct mp_image *dmpi,
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struct mp_image *mpi)
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{
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int y1 = MP_ALIGN_DOWN(vf->priv->opt_top_margin, mpi->fmt.align_y);
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int y2 = MP_ALIGN_DOWN(y1 + mpi->h, mpi->fmt.align_y);
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struct mp_image cropped = *dmpi;
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mp_image_crop(&cropped, 0, y1, mpi->w, y1 + mpi->h);
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mp_image_copy(&cropped, mpi);
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mp_image_clear(dmpi, 0, 0, dmpi->w, y1);
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mp_image_clear(dmpi, 0, y2, dmpi->w, vf->priv->outh);
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}
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static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
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{
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struct vf_priv_s *priv = vf->priv;
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struct osd_state *osd = priv->osd;
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if (vf->priv->opt_top_margin || vf->priv->opt_bottom_margin) {
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struct mp_image *dmpi = vf_alloc_out_image(vf);
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if (!dmpi)
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return NULL;
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mp_image_copy_attributes(dmpi, mpi);
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prepare_image(vf, dmpi, mpi);
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talloc_free(mpi);
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mpi = dmpi;
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}
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osd_draw_on_image_p(osd, priv->dim, mpi->pts, OSD_DRAW_SUB_FILTER,
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vf->out_pool, mpi);
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return mpi;
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}
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static int query_format(struct vf_instance *vf, unsigned int fmt)
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{
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if (!mp_sws_supported_format(fmt))
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return 0;
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return vf_next_query_format(vf, fmt);
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}
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static int control(vf_instance_t *vf, int request, void *data)
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{
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switch (request) {
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case VFCTRL_SET_OSD_OBJ:
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vf->priv->osd = data;
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return CONTROL_TRUE;
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case VFCTRL_INIT_OSD:
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return CONTROL_TRUE;
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}
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return CONTROL_UNKNOWN;
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}
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static int vf_open(vf_instance_t *vf)
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{
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vf->config = config;
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vf->query_format = query_format;
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vf->control = control;
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vf->filter = filter;
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return 1;
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}
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#define OPT_BASE_STRUCT struct vf_priv_s
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static const m_option_t vf_opts_fields[] = {
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OPT_INTRANGE("bottom-margin", opt_bottom_margin, 0, 0, 2000),
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OPT_INTRANGE("top-margin", opt_top_margin, 0, 0, 2000),
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{0}
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};
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const vf_info_t vf_info_sub = {
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.description = "Render subtitles",
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.name = "sub",
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.open = vf_open,
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.priv_size = sizeof(struct vf_priv_s),
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.options = vf_opts_fields,
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};
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