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mpv/libmpcodecs/vf_sub.c

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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 "mp_msg.h"
#include "options.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "sub/sub.h"
#include "sub/dec_sub.h"
#include "libvo/fastmemcpy.h"
#include "libvo/csputils.h"
#include "m_option.h"
#include "m_struct.h"
static const struct vf_priv_s {
int outh, outw;
unsigned int outfmt;
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)
{
struct MPOpts *opts = vf->opts;
if (outfmt == IMGFMT_IF09)
return 0;
vf->priv->outh = height + opts->ass_top_margin + opts->ass_bottom_margin;
vf->priv->outw = width;
if (!opts->screen_size_x && !opts->screen_size_y) {
d_width = d_width * vf->priv->outw / width;
d_height = d_height * vf->priv->outh / height;
}
double dar = (double)d_width / d_height;
double sar = (double)width / height;
vf->priv->dim = (struct mp_osd_res) {
.w = vf->priv->outw,
.h = vf->priv->outh,
.mt = opts->ass_top_margin,
.mb = opts->ass_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 get_image(struct vf_instance *vf, mp_image_t *mpi)
{
if (mpi->type == MP_IMGTYPE_IPB)
return;
if (mpi->flags & MP_IMGFLAG_PRESERVE)
return;
if (mpi->imgfmt != vf->priv->outfmt)
return; // colorspace differ
// width never changes, always try full DR
mpi->priv = vf->dmpi = vf_get_image(vf->next, mpi->imgfmt, mpi->type,
mpi->flags | MP_IMGFLAG_READABLE,
FFMAX(mpi->width, vf->priv->outw),
FFMAX(mpi->height, vf->priv->outh));
if ((vf->dmpi->flags & MP_IMGFLAG_DRAW_CALLBACK) &&
!(vf->dmpi->flags & MP_IMGFLAG_DIRECT)) {
mp_tmsg(MSGT_ASS, MSGL_INFO, "Full DR not possible, trying SLICES instead!\n");
return;
}
int tmargin = vf->opts->ass_top_margin;
// set up mpi as a cropped-down image of dmpi:
if (mpi->flags & MP_IMGFLAG_PLANAR) {
mpi->planes[0] = vf->dmpi->planes[0] + tmargin * vf->dmpi->stride[0];
mpi->planes[1] = vf->dmpi->planes[1] + (tmargin >> mpi->chroma_y_shift) * vf->dmpi->stride[1];
mpi->planes[2] = vf->dmpi->planes[2] + (tmargin >> mpi->chroma_y_shift) * vf->dmpi->stride[2];
mpi->stride[1] = vf->dmpi->stride[1];
mpi->stride[2] = vf->dmpi->stride[2];
} else {
mpi->planes[0] = vf->dmpi->planes[0] + tmargin * vf->dmpi->stride[0];
}
mpi->stride[0] = vf->dmpi->stride[0];
mpi->width = vf->dmpi->width;
mpi->flags |= MP_IMGFLAG_DIRECT;
mpi->flags &= ~MP_IMGFLAG_DRAW_CALLBACK;
// vf->dmpi->flags&=~MP_IMGFLAG_DRAW_CALLBACK;
}
static void blank(mp_image_t *mpi, int y1, int y2)
{
int color[3] = {16, 128, 128}; // black (YUV)
int y;
unsigned char *dst;
int chroma_rows = (y2 - y1) >> mpi->chroma_y_shift;
dst = mpi->planes[0] + y1 * mpi->stride[0];
for (y = 0; y < y2 - y1; ++y) {
memset(dst, color[0], mpi->w);
dst += mpi->stride[0];
}
dst = mpi->planes[1] + (y1 >> mpi->chroma_y_shift) * mpi->stride[1];
for (y = 0; y < chroma_rows; ++y) {
memset(dst, color[1], mpi->chroma_width);
dst += mpi->stride[1];
}
dst = mpi->planes[2] + (y1 >> mpi->chroma_y_shift) * mpi->stride[2];
for (y = 0; y < chroma_rows; ++y) {
memset(dst, color[2], mpi->chroma_width);
dst += mpi->stride[2];
}
}
static int prepare_image(struct vf_instance *vf, mp_image_t *mpi)
{
struct MPOpts *opts = vf->opts;
int tmargin = opts->ass_top_margin;
if (mpi->flags & MP_IMGFLAG_DIRECT
|| mpi->flags & MP_IMGFLAG_DRAW_CALLBACK) {
vf->dmpi = mpi->priv;
if (!vf->dmpi) {
mp_tmsg(MSGT_ASS, MSGL_WARN, "Why do we get NULL??\n");
return 0;
}
mpi->priv = NULL;
// we've used DR, so we're ready...
if (tmargin)
blank(vf->dmpi, 0, tmargin);
if (opts->ass_bottom_margin)
blank(vf->dmpi, vf->priv->outh - opts->ass_bottom_margin,
vf->priv->outh);
if (!(mpi->flags & MP_IMGFLAG_PLANAR))
vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
return 0;
}
// hope we'll get DR buffer:
vf->dmpi = vf_get_image(vf->next, vf->priv->outfmt, MP_IMGTYPE_TEMP,
MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_READABLE,
vf->priv->outw, vf->priv->outh);
// copy mpi->dmpi...
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(vf->dmpi->planes[0] + tmargin * vf->dmpi->stride[0],
mpi->planes[0],
mpi->w,
mpi->h,
vf->dmpi->stride[0],
mpi->stride[0]);
memcpy_pic(vf->dmpi->planes[1] + (tmargin >> mpi->chroma_y_shift) * vf->dmpi->stride[1],
mpi->planes[1],
mpi->w >> mpi->chroma_x_shift,
mpi->h >> mpi->chroma_y_shift,
vf->dmpi->stride[1],
mpi->stride[1]);
memcpy_pic(vf->dmpi->planes[2] + (tmargin >> mpi->chroma_y_shift) * vf->dmpi->stride[2],
mpi->planes[2],
mpi->w >> mpi->chroma_x_shift,
mpi->h >> mpi->chroma_y_shift,
vf->dmpi->stride[2],
mpi->stride[2]);
} else {
memcpy_pic(vf->dmpi->planes[0] + tmargin * vf->dmpi->stride[0],
mpi->planes[0],
mpi->w * (vf->dmpi->bpp / 8),
mpi->h,
vf->dmpi->stride[0],
mpi->stride[0]);
vf->dmpi->planes[1] = mpi->planes[1]; // passthrough rgb8 palette
}
if (tmargin)
blank(vf->dmpi, 0, tmargin);
if (opts->ass_bottom_margin)
blank(vf->dmpi, vf->priv->outh - opts->ass_bottom_margin,
vf->priv->outh);
return 0;
}
static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
{
struct vf_priv_s *priv = vf->priv;
struct osd_state *osd = priv->osd;
prepare_image(vf, mpi);
if (pts != MP_NOPTS_VALUE) {
osd_draw_on_image(osd, priv->dim, pts, OSD_DRAW_SUB_FILTER, vf->dmpi,
&priv->csp);
}
return vf_next_put_image(vf, vf->dmpi, pts);
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
switch (fmt) {
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
return vf_next_query_format(vf, vf->priv->outfmt);
}
return 0;
}
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 void uninit(struct vf_instance *vf)
{
free(vf->priv);
}
static const unsigned int fmt_list[] = {
IMGFMT_YV12,
IMGFMT_I420,
IMGFMT_IYUV,
0
};
static int vf_open(vf_instance_t *vf, char *args)
{
vf->priv->outfmt = vf_match_csp(&vf->next, fmt_list, IMGFMT_YV12);
if (!vf->priv->outfmt) {
uninit(vf);
return 0;
}
vf->config = config;
vf->query_format = query_format;
vf->uninit = uninit;
vf->control = control;
vf->get_image = get_image;
vf->put_image = put_image;
vf->default_caps = VFCAP_OSD;
return 1;
}
#define ST_OFF(f) M_ST_OFF(struct vf_priv_s, f)
static const m_option_t vf_opts_fields[] = {
{NULL, NULL, 0, 0, 0, 0, NULL}
};
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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