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mpv/sub/osd.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 "common/common.h"
#include "stream/stream.h"
#include "osdep/timer.h"
#include "talloc.h"
#include "options/options.h"
#include "common/global.h"
#include "common/msg.h"
#include "osd.h"
#include "osd_state.h"
#include "dec_sub.h"
#include "img_convert.h"
#include "draw_bmp.h"
#include "video/mp_image.h"
#include "video/mp_image_pool.h"
static const struct osd_style_opts osd_style_opts_def = {
.font = "sans-serif",
.font_size = 55,
.color = {255, 255, 255, 255},
.border_color = {0, 0, 0, 255},
.shadow_color = {240, 240, 240, 128},
.border_size = 3,
.shadow_offset = 0,
.margin_x = 25,
.margin_y = 22,
};
#define OPT_BASE_STRUCT struct osd_style_opts
const struct m_sub_options osd_style_conf = {
.opts = (const 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),
OPT_FLOATRANGE("blur", blur, 0, 0, 20),
{0}
},
.size = sizeof(struct osd_style_opts),
.defaults = &osd_style_opts_def,
};
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;
}
struct osd_state *osd_create(struct mpv_global *global)
{
struct osd_state *osd = talloc_zero(NULL, struct osd_state);
*osd = (struct osd_state) {
.opts = global->opts,
.global = global,
.log = mp_log_new(osd, global->log, "osd"),
};
pthread_mutex_init(&osd->lock, NULL);
for (int n = 0; n < MAX_OSD_PARTS; n++) {
struct osd_object *obj = talloc(osd, struct osd_object);
*obj = (struct osd_object) {
.type = n,
.text = talloc_strdup(obj, ""),
.progbar_state = {.type = -1},
};
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_SUB]->is_sub = true;
osd->objs[OSDTYPE_SUB2]->is_sub = true;
osd_init_backend(osd);
return osd;
}
void osd_free(struct osd_state *osd)
{
if (!osd)
return;
osd_destroy_backend(osd);
pthread_mutex_destroy(&osd->lock);
talloc_free(osd);
}
static void osd_changed_unlocked(struct osd_state *osd, int obj)
{
osd->objs[obj]->force_redraw = true;
osd->want_redraw = true;
}
void osd_set_text(struct osd_state *osd, int obj, const char *text)
{
pthread_mutex_lock(&osd->lock);
struct osd_object *osd_obj = osd->objs[obj];
if (!text)
text = "";
if (strcmp(osd_obj->text, text) != 0) {
talloc_free(osd_obj->text);
osd_obj->text = talloc_strdup(osd_obj, text);
osd_changed_unlocked(osd, obj);
}
pthread_mutex_unlock(&osd->lock);
}
void osd_set_sub(struct osd_state *osd, int obj, struct osd_sub_state *substate)
{
pthread_mutex_lock(&osd->lock);
osd->objs[obj]->sub_state = substate ? *substate : (struct osd_sub_state){0};
pthread_mutex_unlock(&osd->lock);
}
bool osd_get_render_subs_in_filter(struct osd_state *osd)
{
pthread_mutex_lock(&osd->lock);
bool r = osd->render_subs_in_filter;
pthread_mutex_unlock(&osd->lock);
return r;
}
void osd_set_render_subs_in_filter(struct osd_state *osd, bool s)
{
pthread_mutex_lock(&osd->lock);
osd->render_subs_in_filter = s;
pthread_mutex_unlock(&osd->lock);
}
void osd_set_progbar(struct osd_state *osd, struct osd_progbar_state *s)
{
pthread_mutex_lock(&osd->lock);
struct osd_object *osd_obj = osd->objs[OSDTYPE_PROGBAR];
osd_obj->progbar_state.type = s->type;
osd_obj->progbar_state.value = s->value;
osd_obj->progbar_state.num_stops = s->num_stops;
MP_TARRAY_GROW(osd_obj, osd_obj->progbar_state.stops, s->num_stops);
memcpy(osd_obj->progbar_state.stops, s->stops,
sizeof(osd_obj->progbar_state.stops[0]) * s->num_stops);
osd_changed_unlocked(osd, osd_obj->type);
pthread_mutex_unlock(&osd->lock);
}
void osd_set_external(struct osd_state *osd, int res_x, int res_y, char *text)
{
pthread_mutex_lock(&osd->lock);
struct osd_object *osd_obj = osd->objs[OSDTYPE_EXTERNAL];
if (strcmp(osd_obj->text, text) != 0 ||
osd_obj->external_res_x != res_x ||
osd_obj->external_res_y != res_y)
{
talloc_free(osd_obj->text);
osd_obj->text = talloc_strdup(osd_obj, text);
osd_obj->external_res_x = res_x;
osd_obj->external_res_y = res_y;
osd_changed_unlocked(osd, osd_obj->type);
}
pthread_mutex_unlock(&osd->lock);
}
void osd_set_external2(struct osd_state *osd, struct sub_bitmaps *imgs)
{
pthread_mutex_lock(&osd->lock);
osd->objs[OSDTYPE_EXTERNAL2]->external2 = imgs;
osd_changed_unlocked(osd, OSDTYPE_EXTERNAL2);
pthread_mutex_unlock(&osd->lock);
}
void osd_set_nav_highlight(struct osd_state *osd, void *priv)
{
pthread_mutex_lock(&osd->lock);
osd->objs[OSDTYPE_NAV_HIGHLIGHT]->highlight_priv = priv;
osd_changed_unlocked(osd, OSDTYPE_NAV_HIGHLIGHT);
pthread_mutex_unlock(&osd->lock);
}
static void render_object(struct osd_state *osd, struct osd_object *obj,
struct mp_osd_res res, double video_pts,
const bool sub_formats[SUBBITMAP_COUNT],
struct sub_bitmaps *out_imgs)
{
struct MPOpts *opts = osd->opts;
bool formats[SUBBITMAP_COUNT];
memcpy(formats, sub_formats, sizeof(formats));
if (opts->force_rgba_osd)
formats[SUBBITMAP_LIBASS] = false;
*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_SUB || obj->type == OSDTYPE_SUB2) {
struct osd_sub_state *sub = &obj->sub_state;
if (sub->render_bitmap_subs && sub->dec_sub) {
double sub_pts = video_pts;
if (sub_pts != MP_NOPTS_VALUE)
sub_pts -= sub->video_offset + opts->sub_delay;
sub_get_bitmaps(sub->dec_sub, obj->vo_res, sub_pts, out_imgs);
} else {
osd_object_get_bitmaps(osd, obj, out_imgs);
}
} else if (obj->type == OSDTYPE_EXTERNAL2) {
if (obj->external2 && obj->external2->format) {
*out_imgs = *obj->external2;
obj->external2->bitmap_id = obj->external2->bitmap_pos_id = 0;
}
} else if (obj->type == OSDTYPE_NAV_HIGHLIGHT) {
if (obj->highlight_priv)
mp_nav_get_highlight(obj->highlight_priv, obj->vo_res, 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)
{
pthread_mutex_lock(&osd->lock);
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;
if (obj->sub_state.dec_sub)
sub_lock(obj->sub_state.dec_sub);
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_ERR(osd, "Can't render OSD part %d (format %d).\n",
obj->type, imgs.format);
}
}
if (obj->sub_state.dec_sub)
sub_unlock(obj->sub_state.dec_sub);
}
pthread_mutex_unlock(&osd->lock);
}
struct draw_on_image_closure {
struct osd_state *osd;
struct mp_image *dest;
struct mp_image_pool *pool;
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 (!mp_image_pool_make_writeable(closure->pool, closure->dest))
return; // on OOM, skip
mp_draw_sub_bitmaps(&osd->draw_cache, closure->dest, imgs);
talloc_steal(osd, osd->draw_cache);
closure->changed = true;
}
// Calls mp_image_make_writeable() on the dest image if something is drawn.
// 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;
}
// Like osd_draw_on_image(), but if dest needs to be copied to make it
// writeable, allocate images from the given pool. (This is a minor
// optimization to reduce "real" image sized memory allocations.)
void osd_draw_on_image_p(struct osd_state *osd, struct mp_osd_res res,
double video_pts, int draw_flags,
struct mp_image_pool *pool, struct mp_image *dest)
{
struct draw_on_image_closure closure = {osd, dest, pool};
osd_draw(osd, res, video_pts, draw_flags, mp_draw_sub_formats,
&draw_on_image, &closure);
}
// Setup the OSD resolution to render into an image with the given parameters.
// The interesting part about this is that OSD has to compensate the aspect
// ratio if the image does not have a 1:1 pixel aspect ratio.
struct mp_osd_res osd_res_from_image_params(const struct mp_image_params *p)
{
double sar = (double)p->w / p->h;
double dar = (double)p->d_w / p->d_h;
return (struct mp_osd_res) {
.w = p->w,
.h = p->h,
.display_par = sar / dar,
};
}
void osd_changed(struct osd_state *osd, int new_value)
{
pthread_mutex_lock(&osd->lock);
osd_changed_unlocked(osd, new_value);
pthread_mutex_unlock(&osd->lock);
}
void osd_changed_all(struct osd_state *osd)
{
for (int n = 0; n < MAX_OSD_PARTS; n++)
osd_changed(osd, n);
}
bool osd_query_and_reset_want_redraw(struct osd_state *osd)
{
pthread_mutex_lock(&osd->lock);
bool r = osd->want_redraw;
osd->want_redraw = false;
pthread_mutex_unlock(&osd->lock);
return r;
}
// Scale factor to translate OSD coordinates to what the obj uses internally.
// osd_coordinates * (sw, sh) = obj_coordinates
void osd_object_get_scale_factor(struct osd_state *osd, int obj,
double *sw, double *sh)
{
int nw, nh;
osd_object_get_resolution(osd, obj, &nw, &nh);
pthread_mutex_lock(&osd->lock);
int vow = osd->objs[obj]->vo_res.w;
int voh = osd->objs[obj]->vo_res.h;
pthread_mutex_unlock(&osd->lock);
*sw = vow ? nw / (double)vow : 0;
*sh = voh ? nh / (double)voh : 0;
}
// Turn *x and *y, which are given in OSD coordinates, to video coordinates.
// frame_w and frame_h give the dimensions of the original, unscaled video.
// (This gives correct results only after the OSD has been updated after a
// resize or video reconfig.)
void osd_coords_to_video(struct osd_state *osd, int frame_w, int frame_h,
int *x, int *y)
{
pthread_mutex_lock(&osd->lock);
struct mp_osd_res res = osd->objs[OSDTYPE_OSD]->vo_res;
int vidw = res.w - res.ml - res.mr;
int vidh = res.h - res.mt - res.mb;
double xscale = (double)vidw / frame_w;
double yscale = (double)vidh / frame_h;
// The OSD size + margins make up the scaled rectangle of the video.
*x = (*x - res.ml) / xscale;
*y = (*y - res.mt) / yscale;
pthread_mutex_unlock(&osd->lock);
}
struct mp_osd_res osd_get_vo_res(struct osd_state *osd, int obj)
{
pthread_mutex_lock(&osd->lock);
struct mp_osd_res res = osd->objs[obj]->vo_res;
pthread_mutex_unlock(&osd->lock);
return res;
}
// Position the subbitmaps in imgs on the screen. Basically, this fits the
// subtitle canvas (of size frame_w x frame_h) onto the screen, such that it
// fills the whole video area (especially if the video is magnified, e.g. on
// fullscreen). If compensate_par is >0, adjust the way the subtitles are
// "stretched" on the screen, and letter-box the result. If compensate_par
// is <0, strictly letter-box the subtitles. If it is 0, stretch them.
void osd_rescale_bitmaps(struct sub_bitmaps *imgs, int frame_w, int frame_h,
struct mp_osd_res res, double compensate_par)
{
int vidw = res.w - res.ml - res.mr;
int vidh = res.h - res.mt - res.mb;
double xscale = (double)vidw / frame_w;
double yscale = (double)vidh / frame_h;
if (compensate_par < 0)
compensate_par = xscale / yscale / res.display_par;
if (compensate_par > 0) {
if (compensate_par > 1.0) {
xscale /= compensate_par;
} else {
yscale *= compensate_par;
}
}
int cx = vidw / 2 - (int)(frame_w * xscale) / 2;
int cy = vidh / 2 - (int)(frame_h * yscale) / 2;
for (int i = 0; i < imgs->num_parts; i++) {
struct sub_bitmap *bi = &imgs->parts[i];
bi->x = (int)(bi->x * xscale) + cx + res.ml;
bi->y = (int)(bi->y * yscale) + cy + res.mt;
bi->dw = (int)(bi->w * xscale + 0.5);
bi->dh = (int)(bi->h * yscale + 0.5);
}
imgs->scaled = xscale != 1 || yscale != 1;
}
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