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mpv/libvo/sub.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "mp_msg.h"
#include "video_out.h"
#include "font_load.h"
#include "sub.h"
#include "../spudec.h"
char * __sub_osd_names[]={
"Seekbar",
"Play",
"Pause",
"Stop",
"Rewind",
"Forward",
"Clock",
"Contrast",
"Saturation",
"Volume",
"Brightness",
"Hue"
};
char * __sub_osd_names_short[] ={ "", "|>", "||", "[]", "<<" , ">>", "", "", "", "", "", ""};
//static int vo_font_loaded=-1;
font_desc_t* vo_font=NULL;
unsigned char* vo_osd_text=NULL;
int sub_unicode=0;
int sub_utf8=0;
int sub_pos=100;
int sub_visibility=1;
// return the real height of a char:
static inline int get_height(int c,int h){
int font;
if ((font=vo_font->font[c])>=0)
if(h<vo_font->pic_a[font]->h) h=vo_font->pic_a[font]->h;
return h;
}
// renders char to a big per-object buffer where alpha and bitmap are separated
static void draw_alpha_buf(mp_osd_obj_t* obj, int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)
{
int dststride = obj->stride;
int dstskip = obj->stride-w;
int srcskip = stride-w;
int i, j;
unsigned char *b = obj->bitmap_buffer + (y0-obj->bbox.y1)*dststride + (x0-obj->bbox.x1);
unsigned char *a = obj->alpha_buffer + (y0-obj->bbox.y1)*dststride + (x0-obj->bbox.x1);
unsigned char *bs = src;
unsigned char *as = srca;
if (x0 < obj->bbox.x1 || x0+w > obj->bbox.x2 || y0 < obj->bbox.y1 || y0+h > obj->bbox.y2) {
fprintf(stderr, "osd text out of range: bbox [%d %d %d %d], txt [%d %d %d %d]\n",
obj->bbox.x1, obj->bbox.x2, obj->bbox.y1, obj->bbox.y2,
x0, x0+w, y0, y0+h);
return;
}
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++, b++, a++, bs++, as++) {
if (*b < *bs) *b = *bs;
if (*as) {
if (*a == 0 || *a > *as) *a = *as;
}
}
b+= dstskip;
a+= dstskip;
bs+= srcskip;
as+= srcskip;
}
}
// allocates/enlarges the alpha/bitmap buffer
static void alloc_buf(mp_osd_obj_t* obj)
{
int len;
if (obj->bbox.x2 < obj->bbox.x1) obj->bbox.x2 = obj->bbox.x1;
if (obj->bbox.y2 < obj->bbox.y1) obj->bbox.y2 = obj->bbox.y1;
obj->stride = ((obj->bbox.x2-obj->bbox.x1)+7)&(~7);
len = obj->stride*(obj->bbox.y2-obj->bbox.y1);
if (obj->allocated<len) {
obj->allocated = len;
free(obj->bitmap_buffer);
free(obj->alpha_buffer);
obj->bitmap_buffer = (unsigned char *)memalign(16, len);
obj->alpha_buffer = (unsigned char *)memalign(16, len);
}
memset(obj->bitmap_buffer, 0, len);
memset(obj->alpha_buffer, 0, len);
}
// renders the buffer
inline static void vo_draw_text_from_buffer(mp_osd_obj_t* obj,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)){
if (obj->allocated > 0) {
draw_alpha(obj->bbox.x1,obj->bbox.y1,
obj->bbox.x2-obj->bbox.x1,
obj->bbox.y2-obj->bbox.y1,
obj->bitmap_buffer,
obj->alpha_buffer,
obj->stride);
}
}
inline static void vo_update_text_osd(mp_osd_obj_t* obj,int dxs,int dys){
unsigned char *cp=vo_osd_text;
int x=20;
int h=0;
int font;
obj->bbox.x1=obj->x=x;
obj->bbox.y1=obj->y=10;
while (*cp){
int c=*cp++;
render_one_glyph(vo_font, c);
x+=vo_font->width[c]+vo_font->charspace;
h=get_height(c,h);
}
obj->bbox.x2=x-vo_font->charspace;
obj->bbox.y2=obj->bbox.y1+h;
obj->flags|=OSDFLAG_BBOX;
alloc_buf(obj);
cp=vo_osd_text;
x = obj->x;
while (*cp){
int c=*cp++;
if ((font=vo_font->font[c])>=0)
draw_alpha_buf(obj,x,obj->y,
vo_font->width[c],
vo_font->pic_a[font]->h,
vo_font->pic_b[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->w);
x+=vo_font->width[c]+vo_font->charspace;
}
}
int vo_osd_progbar_type=-1;
int vo_osd_progbar_value=100; // 0..256
// if we have n=256 bars then OSD progbar looks like below
//
// 0 1 2 3 ... 256 <= vo_osd_progbar_value
// | | | | |
// [ === === === ... === ]
//
// the above schema is rescalled to n=elems bars
inline static void vo_update_text_progbar(mp_osd_obj_t* obj,int dxs,int dys){
obj->flags|=OSDFLAG_CHANGED|OSDFLAG_VISIBLE;
if(vo_osd_progbar_type<0 || !vo_font){
obj->flags&=~OSDFLAG_VISIBLE;
return;
}
render_one_glyph(vo_font, OSD_PB_START);
render_one_glyph(vo_font, OSD_PB_END);
render_one_glyph(vo_font, OSD_PB_0);
render_one_glyph(vo_font, OSD_PB_1);
render_one_glyph(vo_font, vo_osd_progbar_type);
// calculate bbox corners:
{ int h=0;
int y=(dys-vo_font->height)/2;
int delimw=vo_font->width[OSD_PB_START]
+vo_font->width[OSD_PB_END]
+vo_font->charspace;
int width=(2*dxs-3*delimw)/3;
int charw=vo_font->width[OSD_PB_0]+vo_font->charspace;
int elems=width/charw;
int x=(dxs-elems*charw-delimw)/2;
int delta = 0;
if (vo_osd_progbar_type>0 && vo_font->font[vo_osd_progbar_type]>=0){
delta = vo_font->width[vo_osd_progbar_type]+vo_font->spacewidth;
delta = (x-delta > 0) ? delta : x;
}
h=get_height(OSD_PB_START,h);
h=get_height(OSD_PB_END,h);
h=get_height(OSD_PB_0,h);
h=get_height(OSD_PB_1,h);
obj->bbox.x1=obj->x=x;
obj->bbox.y1=obj->y=y;
obj->bbox.x2=x+width+delimw;
obj->bbox.y2=y+h; //vo_font->height;
obj->flags|=OSDFLAG_BBOX;
obj->params.progbar.elems=elems;
obj->bbox.x1-=delta; // space for an icon
}
alloc_buf(obj);
// render it:
{ unsigned char *s;
unsigned char *sa;
int i,w,h,st,mark;
int x=obj->x;
int y=obj->y;
int c,font;
int charw=vo_font->width[OSD_PB_0]+vo_font->charspace;
int elems=obj->params.progbar.elems;
if (vo_osd_progbar_value<=0)
mark=0;
else {
int ev=vo_osd_progbar_value*elems;
mark=ev>>8;
if (ev & 0xFF) mark++;
if (mark>elems) mark=elems;
}
// printf("osd.progbar width=%d xpos=%d\n",width,x);
c=vo_osd_progbar_type;
if(vo_osd_progbar_type>0 && (font=vo_font->font[c])>=0) {
int xp=x-vo_font->width[c]-vo_font->spacewidth;
draw_alpha_buf(obj,(xp<0?0:xp),y,
vo_font->width[c],
vo_font->pic_a[font]->h,
vo_font->pic_b[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->w);
}
c=OSD_PB_START;
if ((font=vo_font->font[c])>=0)
draw_alpha_buf(obj,x,y,
vo_font->width[c],
vo_font->pic_a[font]->h,
vo_font->pic_b[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->w);
x+=vo_font->width[c]+vo_font->charspace;
c=OSD_PB_0;
if ((font=vo_font->font[c])>=0){
w=vo_font->width[c];
h=vo_font->pic_a[font]->h;
s=vo_font->pic_b[font]->bmp+vo_font->start[c];
sa=vo_font->pic_a[font]->bmp+vo_font->start[c];
st=vo_font->pic_a[font]->w;
if ((i=mark)) do {
draw_alpha_buf(obj,x,y,w,h,s,sa,st);
x+=charw;
} while(--i);
}
c=OSD_PB_1;
if ((font=vo_font->font[c])>=0){
w=vo_font->width[c];
h=vo_font->pic_a[font]->h;
s =vo_font->pic_b[font]->bmp+vo_font->start[c];
sa=vo_font->pic_a[font]->bmp+vo_font->start[c];
st=vo_font->pic_a[font]->w;
if ((i=elems-mark)) do {
draw_alpha_buf(obj,x,y,w,h,s,sa,st);
x+=charw;
} while(--i);
}
c=OSD_PB_END;
if ((font=vo_font->font[c])>=0)
draw_alpha_buf(obj,x,y,
vo_font->width[c],
vo_font->pic_a[font]->h,
vo_font->pic_b[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->w);
// x+=vo_font->width[c]+vo_font->charspace;
}
// vo_osd_progbar_value=(vo_osd_progbar_value+1)&0xFF;
}
subtitle* vo_sub=NULL;
// vo_draw_text_sub(int dxs,int dys,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride))
inline static void vo_update_text_sub(mp_osd_obj_t* obj,int dxs,int dys){
unsigned char *t;
int c,i,j,l,x,y,font,prevc;
int len;
int k,lastk;
int lastStripPosition;
int xsize,lastxsize;
int xmin=dxs,xmax=0;
int h,lasth;
obj->flags|=OSDFLAG_CHANGED|OSDFLAG_VISIBLE;
if(!vo_sub || !vo_font || !sub_visibility){
obj->flags&=~OSDFLAG_VISIBLE;
return;
}
obj->bbox.y2=obj->y=dys;
obj->params.subtitle.lines=0;
// too long lines divide into a smaller ones
i=k=lasth=0;
h=vo_font->height;
xsize=-vo_font->charspace;
lastStripPosition=-1;
l=vo_sub->lines;
while (l) {
l--;
t=vo_sub->text[i++];
len=strlen(t)-1;
// printf("sub(%d) '%s'\n",len,t);
// if(len<0) memy -=h; // according to max of vo_font->pic_a[font]->h
// else
prevc = -1;
for (j=0;j<=len;j++){
if ((c=t[j])>=0x80){
if (sub_utf8){
if ((c & 0xe0) == 0xc0) /* 2 bytes U+00080..U+0007FF*/
c = (c & 0x1f)<<6 | (t[++j] & 0x3f);
else if((c & 0xf0) == 0xe0)/* 3 bytes U+00800..U+00FFFF*/
c = ((c & 0x0f)<<6 |
(t[++j] & 0x3f))<<6 | (t[++j] & 0x3f);
} else if (sub_unicode)
c = (c<<8) + t[++j];
}
if (k==MAX_UCS){
len=j; // end here
mp_msg(MSGT_OSD,MSGL_WARN,"\nMAX_UCS exceeded!\n");
}
if (!c) c++; // avoid UCS 0
render_one_glyph(vo_font, c);
if (c==' '){
lastk=k;
lastStripPosition=j;
lastxsize=xsize;
} else if ((font=vo_font->font[c])>=0){
if (vo_font->pic_a[font]->h > h){
h=vo_font->pic_a[font]->h;
}
}
obj->params.subtitle.utbl[k++]=c;
xsize+=vo_font->width[c]+vo_font->charspace+kerning(vo_font,prevc,c);
if (dxs<xsize){
prevc = -1;
if (lastStripPosition>0){
j=lastStripPosition;
xsize=lastxsize;
k=lastk;
} else {
xsize -=vo_font->width[c]+vo_font->charspace+kerning(vo_font,prevc,c);; // go back
k--; // cut line here
while (t[j] && t[j]!=' ') j++; // jump to the nearest space
}
} else if (j<len) {
prevc = c;
continue;
}
if (h>obj->y){ // out of the screen so end parsing
obj->y -= lasth - vo_font->height; // correct the y position
l=0;
break;
}
obj->params.subtitle.utbl[k++]=0;
obj->params.subtitle.xtbl[obj->params.subtitle.lines++]=(dxs-xsize)/2;
if(xmin>(dxs-xsize)/2) xmin=(dxs-xsize)/2;
if(xmax<(dxs+xsize)/2) xmax=(dxs+xsize)/2;
if (obj->params.subtitle.lines==MAX_UCSLINES||k>MAX_UCS){
l=0; len=j; // end parsing
} else if(l || j<len){ // not the last line or not the last char
lastStripPosition=-1;
xsize=-vo_font->charspace;
lasth=h;
h=vo_font->height;
}
// printf("h: %d -> %d \n",vo_font->height,h);
obj->y -=h; // according to max of vo_font->pic_a[font]->h
prevc = -1;
}
}
if (obj->y >= (dys * sub_pos / 100)){
int old=obj->y;
obj->y = dys * sub_pos /100;
obj->bbox.y2-=old-obj->y;
}
// calculate bbox:
obj->bbox.x1=xmin;
obj->bbox.x2=xmax;
obj->bbox.y1=obj->y;
// obj->bbox.y2=obj->y+obj->params.subtitle.lines*vo_font->height;
obj->flags|=OSDFLAG_BBOX;
alloc_buf(obj);
y = obj->y;
i=j=0;
if ((l=obj->params.subtitle.lines)) for (;;) {
x=obj->params.subtitle.xtbl[i++];
prevc = -1;
while ((c=obj->params.subtitle.utbl[j++])){
x += kerning(vo_font,prevc,c);
if ((font=vo_font->font[c])>=0)
draw_alpha_buf(obj,x,y,
vo_font->width[c],
vo_font->pic_a[font]->h+y<obj->dys ? vo_font->pic_a[font]->h : obj->dys-y,
vo_font->pic_b[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->bmp+vo_font->start[c],
vo_font->pic_a[font]->w);
x+=vo_font->width[c]+vo_font->charspace;
prevc = c;
}
if (!--l) break;
y+=vo_font->height;
}
}
inline static void vo_update_spudec_sub(mp_osd_obj_t* obj, int dxs, int dys)
{
unsigned int bbox[4];
spudec_calc_bbox(vo_spudec, dxs, dys, bbox);
obj->bbox.x1 = bbox[0];
obj->bbox.x2 = bbox[1];
obj->bbox.y1 = bbox[2];
obj->bbox.y2 = bbox[3];
obj->flags |= OSDFLAG_BBOX;
}
inline static void vo_draw_spudec_sub(mp_osd_obj_t* obj, void (*draw_alpha)(int x0, int y0, int w, int h, unsigned char* src, unsigned char* srca, int stride))
{
spudec_draw_scaled(vo_spudec, obj->dxs, obj->dys, draw_alpha);
}
void *vo_spudec=NULL;
void *vo_vobsub=NULL;
static int draw_alpha_init_flag=0;
extern void vo_draw_alpha_init();
mp_osd_obj_t* vo_osd_list=NULL;
mp_osd_obj_t* new_osd_obj(int type){
mp_osd_obj_t* osd=malloc(sizeof(mp_osd_obj_t));
memset(osd,0,sizeof(mp_osd_obj_t));
osd->next=vo_osd_list;
vo_osd_list=osd;
osd->type=type;
osd->alpha_buffer = NULL;
osd->bitmap_buffer = NULL;
osd->allocated = -1;
return osd;
}
void free_osd_list(){
mp_osd_obj_t* obj=vo_osd_list;
while(obj){
mp_osd_obj_t* next=obj->next;
if (obj->alpha_buffer) free(obj->alpha_buffer);
if (obj->bitmap_buffer) free(obj->bitmap_buffer);
free(obj);
obj=next;
}
vo_osd_list=NULL;
}
int vo_update_osd(int dxs,int dys){
mp_osd_obj_t* obj=vo_osd_list;
int chg=0;
#ifdef HAVE_FREETYPE
// here is the right place to get screen dimensions
if (force_load_font) {
force_load_font = 0;
load_font(dxs, dys);
}
#endif
while(obj){
if(dxs!=obj->dxs || dys!=obj->dys || obj->flags&OSDFLAG_FORCE_UPDATE){
int vis=obj->flags&OSDFLAG_VISIBLE;
obj->flags&=~OSDFLAG_BBOX;
switch(obj->type){
case OSDTYPE_SUBTITLE:
vo_update_text_sub(obj,dxs,dys);
break;
case OSDTYPE_PROGBAR:
vo_update_text_progbar(obj,dxs,dys);
break;
case OSDTYPE_SPU:
if(sub_visibility && vo_spudec && spudec_visible(vo_spudec)){
vo_update_spudec_sub(obj, dxs, dys);
obj->flags|=OSDFLAG_VISIBLE|OSDFLAG_CHANGED;
}
else
obj->flags&=~OSDFLAG_VISIBLE;
break;
case OSDTYPE_OSD:
if(vo_font && vo_osd_text && vo_osd_text[0]){
vo_update_text_osd(obj,dxs,dys); // update bbox
obj->flags|=OSDFLAG_VISIBLE|OSDFLAG_CHANGED;
} else
obj->flags&=~OSDFLAG_VISIBLE;
break;
}
// check bbox:
if(!(obj->flags&OSDFLAG_BBOX)){
// we don't know, so assume the whole screen changed :(
obj->bbox.x1=obj->bbox.y1=0;
obj->bbox.x2=dxs;
obj->bbox.y2=dys;
obj->flags|=OSDFLAG_BBOX;
} else {
// check bbox, reduce it if it's out of bounds (corners):
if(obj->bbox.x1<0) obj->bbox.x1=0;
if(obj->bbox.y1<0) obj->bbox.y1=0;
if(obj->bbox.x2>dxs) obj->bbox.x2=dxs;
if(obj->bbox.y2>dys) obj->bbox.y2=dys;
if(obj->flags&OSDFLAG_VISIBLE)
// debug:
mp_msg(MSGT_OSD,MSGL_DBG2,"OSD update: %d;%d %dx%d \n",
obj->bbox.x1,obj->bbox.y1,obj->bbox.x2-obj->bbox.x1,
obj->bbox.y2-obj->bbox.y1);
}
// check if visibility changed:
if(vis != (obj->flags&OSDFLAG_VISIBLE) ) obj->flags|=OSDFLAG_CHANGED;
// remove the cause of automatic update:
obj->dxs=dxs; obj->dys=dys;
obj->flags&=~OSDFLAG_FORCE_UPDATE;
}
if(obj->flags&OSDFLAG_CHANGED){
chg|=1<<obj->type;
mp_msg(MSGT_OSD,MSGL_DBG2,"OSD chg: %d V: %s pb:%d \n",obj->type,(obj->flags&OSDFLAG_VISIBLE)?"yes":"no",vo_osd_progbar_type);
}
obj=obj->next;
}
return chg;
}
void vo_init_osd(){
if(!draw_alpha_init_flag){
draw_alpha_init_flag=1;
vo_draw_alpha_init();
}
if(vo_osd_list) free_osd_list();
// temp hack, should be moved to mplayer/mencoder later
new_osd_obj(OSDTYPE_OSD);
new_osd_obj(OSDTYPE_SUBTITLE);
new_osd_obj(OSDTYPE_PROGBAR);
new_osd_obj(OSDTYPE_SPU);
#ifdef HAVE_FREETYPE
force_load_font = 1;
#endif
}
int vo_osd_changed_flag=0;
void vo_remove_text(int dxs,int dys,void (*remove)(int x0,int y0, int w,int h)){
mp_osd_obj_t* obj=vo_osd_list;
vo_update_osd(dxs,dys);
while(obj){
if(((obj->flags&OSDFLAG_CHANGED) || (obj->flags&OSDFLAG_VISIBLE)) &&
(obj->flags&OSDFLAG_OLD_BBOX)){
int w=obj->old_bbox.x2-obj->old_bbox.x1;
int h=obj->old_bbox.y2-obj->old_bbox.y1;
if(w>0 && h>0){
vo_osd_changed_flag=obj->flags&OSDFLAG_CHANGED; // temp hack
remove(obj->old_bbox.x1,obj->old_bbox.y1,w,h);
}
// obj->flags&=~OSDFLAG_OLD_BBOX;
}
obj=obj->next;
}
}
void vo_draw_text(int dxs,int dys,void (*draw_alpha)(int x0,int y0, int w,int h, unsigned char* src, unsigned char *srca, int stride)){
mp_osd_obj_t* obj=vo_osd_list;
vo_update_osd(dxs,dys);
while(obj){
if(obj->flags&OSDFLAG_VISIBLE){
vo_osd_changed_flag=obj->flags&OSDFLAG_CHANGED; // temp hack
switch(obj->type){
case OSDTYPE_SPU:
vo_draw_spudec_sub(obj, draw_alpha); // FIXME
break;
case OSDTYPE_OSD:
case OSDTYPE_SUBTITLE:
case OSDTYPE_PROGBAR:
vo_draw_text_from_buffer(obj,draw_alpha);
break;
}
obj->old_bbox=obj->bbox;
obj->flags|=OSDFLAG_OLD_BBOX;
}
obj->flags&=~OSDFLAG_CHANGED;
obj=obj->next;
}
}
static int vo_osd_changed_status = 0;
int vo_osd_changed(int new_value)
{
mp_osd_obj_t* obj=vo_osd_list;
int ret = vo_osd_changed_status;
vo_osd_changed_status = new_value;
while(obj){
if(obj->type==new_value) obj->flags|=OSDFLAG_FORCE_UPDATE;
obj=obj->next;
}
return ret;
}
// BBBBBBBBBBBB AAAAAAAAAAAAA BBBBBBBBBBB
// BBBBBBBBBBBB BBBBBBBBBBBBB
// BBBBBBB
// return TRUE if we have osd in the specified rectangular area:
int vo_osd_check_range_update(int x1,int y1,int x2,int y2){
mp_osd_obj_t* obj=vo_osd_list;
while(obj){
if(obj->flags&OSDFLAG_VISIBLE){
if( (obj->bbox.x1<=x2 && obj->bbox.x2>=x1) &&
(obj->bbox.y1<=y2 && obj->bbox.y2>=y1) ) return 1;
}
obj=obj->next;
}
return 0;
}
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