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mpv/sub/sub.c

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/*
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <libavutil/common.h>
#include "core/mp_common.h"
#include "stream/stream.h"
#include "osdep/timer.h"
#include "talloc.h"
#include "core/options.h"
#include "core/mplayer.h"
#include "core/mp_msg.h"
#include "sub.h"
#include "dec_sub.h"
#include "img_convert.h"
#include "draw_bmp.h"
#include "spudec.h"
#include "subreader.h"
char * const sub_osd_names[]={
_("Seekbar"),
_("Play"),
_("Pause"),
_("Stop"),
_("Rewind"),
_("Forward"),
_("Clock"),
_("Contrast"),
_("Saturation"),
_("Volume"),
_("Brightness"),
_("Hue"),
_("Balance")
};
char * const sub_osd_names_short[] ={ "", "|>", "||", "[]", "<<" , ">>", "", "", "", "", "", "", "" };
int sub_pos=100;
int sub_visibility=1;
subtitle* vo_sub=NULL;
float sub_delay = 0;
float sub_fps = 0;
void *vo_spudec=NULL;
void *vo_vobsub=NULL;
static const const struct osd_style_opts osd_style_opts_def = {
.font = "Sans",
.font_size = 45,
.color = {255, 255, 255, 255},
.border_color = {0, 0, 0, 255},
.shadow_color = {240, 240, 240, 128},
.border_size = 2.5,
.shadow_offset = 0,
.margin_x = 25,
.margin_y = 10,
};
#undef OPT_BASE_STRUCT
#define OPT_BASE_STRUCT struct osd_style_opts
const struct m_sub_options osd_style_conf = {
.opts = (m_option_t[]) {
OPT_STRING("font", font, 0),
OPT_FLOATRANGE("font-size", font_size, 0, 1, 9000),
OPT_COLOR("color", color, 0),
OPT_COLOR("border-color", border_color, 0),
OPT_COLOR("shadow-color", shadow_color, 0),
OPT_COLOR("back-color", back_color, 0),
OPT_FLOATRANGE("border-size", border_size, 0, 0, 10),
OPT_FLOATRANGE("shadow-offset", shadow_offset, 0, 0, 10),
OPT_FLOATRANGE("spacing", spacing, 0, -10, 10),
OPT_INTRANGE("margin-x", margin_x, 0, 0, 300),
OPT_INTRANGE("margin-y", margin_y, 0, 0, 600),
{0}
},
.size = sizeof(struct osd_style_opts),
.defaults = &osd_style_opts_def,
};
static struct osd_state *global_osd;
static bool osd_res_equals(struct mp_osd_res a, struct mp_osd_res b)
{
return a.w == b.w && a.h == b.h && a.ml == b.ml && a.mt == b.mt
&& a.mr == b.mr && a.mb == b.mb
&& a.display_par == b.display_par
&& a.video_par == b.video_par;
}
struct osd_state *osd_create(struct MPOpts *opts, struct ass_library *asslib)
{
struct osd_state *osd = talloc_zero(NULL, struct osd_state);
*osd = (struct osd_state) {
.opts = opts,
.ass_library = asslib,
.osd_text = talloc_strdup(osd, ""),
.progbar_type = -1,
};
for (int n = 0; n < MAX_OSD_PARTS; n++) {
struct osd_object *obj = talloc_struct(osd, struct osd_object, {
.type = n,
});
for (int i = 0; i < OSD_CONV_CACHE_MAX; i++)
obj->cache[i] = talloc_steal(obj, osd_conv_cache_new());
osd->objs[n] = obj;
}
osd->objs[OSDTYPE_SPU]->is_sub = true; // spudec.c
osd->objs[OSDTYPE_SUB]->is_sub = true; // dec_sub.c
osd->objs[OSDTYPE_SUBTITLE]->is_sub = true; // osd_libass.c
osd_init_backend(osd);
global_osd = osd;
return osd;
}
void osd_free(struct osd_state *osd)
{
if (!osd)
return;
osd_destroy_backend(osd);
talloc_free(osd);
global_osd = NULL;
}
void osd_set_text(struct osd_state *osd, const char *text)
{
if (!text)
text = "";
if (strcmp(osd->osd_text, text) == 0)
return;
talloc_free(osd->osd_text);
osd->osd_text = talloc_strdup(osd, text);
vo_osd_changed(OSDTYPE_OSD);
}
static bool spu_visible(struct osd_state *osd, struct osd_object *obj)
{
struct MPOpts *opts = osd->opts;
return opts->sub_visibility && vo_spudec && spudec_visible(vo_spudec);
}
static void render_object(struct osd_state *osd, struct osd_object *obj,
struct mp_osd_res res, double video_pts,
const bool formats[SUBBITMAP_COUNT],
struct sub_bitmaps *out_imgs)
{
struct MPOpts *opts = osd->opts;
*out_imgs = (struct sub_bitmaps) {0};
if (!osd_res_equals(res, obj->vo_res))
obj->force_redraw = true;
obj->vo_res = res;
if (obj->type == OSDTYPE_SPU) {
if (spu_visible(osd, obj))
spudec_get_indexed(vo_spudec, &obj->vo_res, out_imgs);
} else if (obj->type == OSDTYPE_SUB) {
double sub_pts = video_pts;
if (sub_pts != MP_NOPTS_VALUE)
sub_pts += sub_delay - osd->sub_offset;
sub_get_bitmaps(osd, obj->vo_res, sub_pts, out_imgs);
} else {
osd_object_get_bitmaps(osd, obj, out_imgs);
}
if (obj->force_redraw) {
out_imgs->bitmap_id++;
out_imgs->bitmap_pos_id++;
}
obj->force_redraw = false;
obj->vo_bitmap_id += out_imgs->bitmap_id;
obj->vo_bitmap_pos_id += out_imgs->bitmap_pos_id;
if (out_imgs->num_parts == 0)
return;
if (obj->cached.bitmap_id == obj->vo_bitmap_id
&& obj->cached.bitmap_pos_id == obj->vo_bitmap_pos_id
&& formats[obj->cached.format])
{
*out_imgs = obj->cached;
return;
}
out_imgs->render_index = obj->type;
out_imgs->bitmap_id = obj->vo_bitmap_id;
out_imgs->bitmap_pos_id = obj->vo_bitmap_pos_id;
if (formats[out_imgs->format])
return;
bool cached = false; // do we have a copy of all the image data?
if (out_imgs->format == SUBBITMAP_INDEXED && opts->sub_gray)
cached |= osd_conv_idx_to_gray(obj->cache[0], out_imgs);
if (formats[SUBBITMAP_RGBA] && out_imgs->format == SUBBITMAP_INDEXED)
cached |= osd_conv_idx_to_rgba(obj->cache[1], out_imgs);
if (out_imgs->format == SUBBITMAP_RGBA && opts->sub_gauss != 0.0f)
cached |= osd_conv_blur_rgba(obj->cache[2], out_imgs, opts->sub_gauss);
// Do this conversion last to not trigger gauss blurring for ASS
if (formats[SUBBITMAP_RGBA] && out_imgs->format == SUBBITMAP_LIBASS)
cached |= osd_conv_ass_to_rgba(obj->cache[3], out_imgs);
if (cached)
obj->cached = *out_imgs;
}
// draw_flags is a bit field of OSD_DRAW_* constants
void osd_draw(struct osd_state *osd, struct mp_osd_res res,
double video_pts, int draw_flags,
const bool formats[SUBBITMAP_COUNT],
void (*cb)(void *ctx, struct sub_bitmaps *imgs), void *cb_ctx)
{
if (draw_flags & OSD_DRAW_SUB_FILTER)
draw_flags |= OSD_DRAW_SUB_ONLY;
for (int n = 0; n < MAX_OSD_PARTS; n++) {
struct osd_object *obj = osd->objs[n];
// Object is drawn into the video frame itself; don't draw twice
if (osd->render_subs_in_filter && obj->is_sub &&
!(draw_flags & OSD_DRAW_SUB_FILTER))
continue;
if ((draw_flags & OSD_DRAW_SUB_ONLY) && !obj->is_sub)
continue;
struct sub_bitmaps imgs;
render_object(osd, obj, res, video_pts, formats, &imgs);
if (imgs.num_parts > 0) {
if (formats[imgs.format]) {
cb(cb_ctx, &imgs);
} else {
mp_msg(MSGT_OSD, MSGL_ERR,
"Can't render OSD part %d (format %d).\n",
obj->type, imgs.format);
}
}
}
}
struct draw_on_image_closure {
struct osd_state *osd;
struct mp_image *dest;
struct mp_draw_sub_backup *bk;
bool changed;
};
static void draw_on_image(void *ctx, struct sub_bitmaps *imgs)
{
struct draw_on_image_closure *closure = ctx;
struct osd_state *osd = closure->osd;
if (closure->bk)
mp_draw_sub_backup_add(closure->bk, closure->dest, imgs);
mp_draw_sub_bitmaps(&osd->draw_cache, closure->dest, imgs);
talloc_steal(osd, osd->draw_cache);
closure->changed = true;
}
// Returns whether anything was drawn.
bool osd_draw_on_image(struct osd_state *osd, struct mp_osd_res res,
double video_pts, int draw_flags, struct mp_image *dest)
{
struct draw_on_image_closure closure = {osd, dest};
osd_draw(osd, res, video_pts, draw_flags, mp_draw_sub_formats,
&draw_on_image, &closure);
return closure.changed;
}
void osd_draw_on_image_bk(struct osd_state *osd, struct mp_osd_res res,
double video_pts, int draw_flags,
struct mp_draw_sub_backup *bk, struct mp_image *dest)
{
struct draw_on_image_closure closure = {osd, dest, bk};
osd_draw(osd, res, video_pts, draw_flags, mp_draw_sub_formats,
&draw_on_image, &closure);
}
void vo_osd_changed(int new_value)
{
struct osd_state *osd = global_osd;
for (int n = 0; n < MAX_OSD_PARTS; n++) {
if (osd->objs[n]->type == new_value)
osd->objs[n]->force_redraw = true;
}
osd->want_redraw = true;
}
void osd_subs_changed(struct osd_state *osd)
{
for (int n = 0; n < MAX_OSD_PARTS; n++) {
if (osd->objs[n]->is_sub)
vo_osd_changed(n);
}
}
bool sub_bitmaps_bb(struct sub_bitmaps *imgs, struct mp_rect *out_bb)
{
struct mp_rect bb = {INT_MAX, INT_MAX, INT_MIN, INT_MIN};
for (int n = 0; n < imgs->num_parts; n++) {
struct sub_bitmap *p = &imgs->parts[n];
bb.x0 = FFMIN(bb.x0, p->x);
bb.y0 = FFMIN(bb.y0, p->y);
bb.x1 = FFMAX(bb.x1, p->x + p->dw);
bb.y1 = FFMAX(bb.y1, p->y + p->dh);
}
// avoid degenerate bounding box if empty
bb.x0 = FFMIN(bb.x0, bb.x1);
bb.y0 = FFMIN(bb.y0, bb.y1);
*out_bb = bb;
return bb.x0 < bb.x1 && bb.y0 < bb.y1;
}
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