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mpv/sub/dec_sub.c
Uoti Urpala 1959ba006c subs, vo_vdpau: support RGBA color for PGS subtitles
Support passing bitmap subtitles to VOs in full RGBA color, and
implement this for libavcodec-decoded subtitle formats on decoding
side and vo_vdpau on display side. Currently this is enabled for PGS
(blu-ray) and DVB subtitles.

VDPAU seems to have sampling issues similar to known GL ones when
drawing a sub-rectangle from a larger texture with scaling, where
adjacent pixels outside the specified source rectangle affect the
result. As the bitmap subtitles may be scaled, add padding support to
the bitmap packer code.

In principle, this could be used for colored DVD subtitles too.
However, the libavcodec DVD decoder lacks parts of the resolution and
palette handling that are present in spudec.c.

Conflicts:
	libvo/vo_gl.c
	sub/dec_sub.h
	sub/sd_lavc.c
2012-09-18 21:07:30 +02:00

108 lines
3.3 KiB
C

/*
* 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 <stdlib.h>
#include <stdbool.h>
#include <assert.h>
#include "config.h"
#include "libmpdemux/stheader.h"
#include "sub/sd.h"
#include "sub/sub.h"
#include "sub/dec_sub.h"
#include "options.h"
extern const struct sd_functions sd_ass;
extern const struct sd_functions sd_lavc;
void sub_init(struct sh_sub *sh, struct osd_state *osd)
{
struct MPOpts *opts = sh->opts;
assert(!osd->sh_sub);
#ifdef CONFIG_ASS
if (opts->ass_enabled && is_text_sub(sh->type))
sh->sd_driver = &sd_ass;
#endif
if (strchr("bpx", sh->type))
sh->sd_driver = &sd_lavc;
if (sh->sd_driver) {
if (sh->sd_driver->init(sh, osd) < 0)
return;
osd->sh_sub = sh;
osd->bitmap_id = ++osd->bitmap_pos_id;
sh->initialized = true;
sh->active = true;
}
}
void sub_decode(struct sh_sub *sh, struct osd_state *osd, void *data,
int data_len, double pts, double duration)
{
if (sh->active && sh->sd_driver->decode)
sh->sd_driver->decode(sh, osd, data, data_len, pts, duration);
}
void sub_get_bitmaps(struct osd_state *osd, struct sub_bitmaps *res)
{
struct MPOpts *opts = osd->opts;
*res = (struct sub_bitmaps){ .type = SUBBITMAP_EMPTY,
.bitmap_id = osd->bitmap_id,
.bitmap_pos_id = osd->bitmap_pos_id };
if (!opts->sub_visibility || !osd->sh_sub || !osd->sh_sub->active) {
/* Change ID in case we just switched from visible subtitles
* to current state. Hopefully, unnecessarily claiming that
* things may have changed is harmless for empty contents.
* Increase osd-> values ahead so that _next_ returned id
* is also guaranteed to differ from this one.
*/
res->bitmap_id = ++res->bitmap_pos_id;
osd->bitmap_id = osd->bitmap_pos_id += 2;
return;
}
if (osd->sh_sub->sd_driver->get_bitmaps)
osd->sh_sub->sd_driver->get_bitmaps(osd->sh_sub, osd, res);
osd->bitmap_id = res->bitmap_id;
osd->bitmap_pos_id = res->bitmap_pos_id;
}
void sub_reset(struct sh_sub *sh, struct osd_state *osd)
{
if (sh->active && sh->sd_driver->reset)
sh->sd_driver->reset(sh, osd);
}
void sub_switchoff(struct sh_sub *sh, struct osd_state *osd)
{
if (sh->active && sh->sd_driver->switch_off) {
assert(osd->sh_sub == sh);
sh->sd_driver->switch_off(sh, osd);
osd->sh_sub = NULL;
}
sh->active = false;
}
void sub_uninit(struct sh_sub *sh)
{
assert (!sh->active);
if (sh->initialized && sh->sd_driver->uninit)
sh->sd_driver->uninit(sh);
sh->initialized = false;
}