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Teletext support

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Part 4/5: teletext page rendering



git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@23923 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
voroshil 2007-07-29 17:57:39 +00:00
parent ecd76ccd5c
commit da32be7802
4 changed files with 299 additions and 0 deletions
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263
libvo/sub.c
View File

@ -14,6 +14,10 @@
#define OSD_NAV_BOX_ALPHA 0x7f
#endif
#ifdef HAVE_TV_TELETEXT
#include "stream/tv.h"
#endif
#include "mplayer.h"
#include "mp_msg.h"
#include "help_mp.h"
@ -68,6 +72,13 @@ font_desc_t* vo_font=NULL;
font_desc_t* sub_font=NULL;
unsigned char* vo_osd_text=NULL;
#ifdef HAVE_TV_TELETEXT
void* vo_osd_teletext_page=NULL;
int vo_osd_teletext_half = 0;
int vo_osd_teletext_mode=0;
int vo_osd_teletext_format=0;
int vo_osd_teletext_scale=0;
#endif
int sub_unicode=0;
int sub_utf8=0;
int sub_pos=100;
@ -230,6 +241,247 @@ inline static void vo_update_nav (mp_osd_obj_t *obj, int dxs, int dys) {
}
#endif
#ifdef HAVE_TV_TELETEXT
// renders char to a big per-object buffer where alpha and bitmap are separated
static void tt_draw_alpha_buf(mp_osd_obj_t* obj, int x0,int y0, int w,int h, unsigned char* src, int stride,int fg,int bg,int alpha)
{
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;
if (x0 < obj->bbox.x1 || x0+w > obj->bbox.x2 || y0 < obj->bbox.y1 || y0+h > obj->bbox.y2) {
mp_msg(MSGT_OSD,MSGL_ERR,"tt 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++) {
*b=(fg-bg)*(*bs)/255+bg;
*a=alpha;
}
b+= dstskip;
a+= dstskip;
bs+= srcskip;
}
}
inline static void vo_update_text_teletext(mp_osd_obj_t *obj, int dxs, int dys)
{
int h=0,w=0,i,j,font;
int wm,hm;
int color;
int x,y,x0,y0;
int cols,rows;
int wm12;
int hm13;
int hm23;
int start_row,max_rows;
int b,ax[6],ay[6],aw[6],ah[6];
tt_char tc;
tt_char* tdp=vo_osd_teletext_page;
unsigned char colors[8]={1,85,150,226,70,105,179,254};
unsigned char* buf[9];
obj->flags|=OSDFLAG_CHANGED|OSDFLAG_VISIBLE;
if (!tdp || !vo_osd_teletext_mode) {
obj->flags&=~OSDFLAG_VISIBLE;
return;
}
switch(vo_osd_teletext_half){
case TT_ZOOM_TOP_HALF:
start_row=0;
max_rows=VBI_ROWS/2;
break;
case TT_ZOOM_BOTTOM_HALF:
start_row=VBI_ROWS/2;
max_rows=VBI_ROWS/2;
break;
default:
start_row=0;
max_rows=VBI_ROWS;
break;
}
wm=0;
for(i=start_row;i<max_rows;i++){
for(j=0;j<VBI_COLUMNS;j++){
tc=tdp[i*VBI_COLUMNS+j];
if(!tc.ctl && !tc.gfx)
{
render_one_glyph(vo_font, tc.unicode);
if (wm<vo_font->width[tc.unicode])
wm=vo_font->width[tc.unicode];
}
}
}
hm=vo_font->height+1;
wm=dxs*hm*max_rows/(dys*VBI_COLUMNS);
//very simple teletext font auto scaling
if(!vo_osd_teletext_scale && hm*(max_rows+1)>dys){
text_font_scale_factor*=1.0*(dys)/((max_rows+1)*hm);
force_load_font=1;
vo_osd_teletext_scale=text_font_scale_factor;
obj->flags&=~OSDFLAG_VISIBLE;
return;
}
cols=dxs/wm;
rows=dys/hm;
if(cols>VBI_COLUMNS)
cols=VBI_COLUMNS;
if(rows>max_rows)
rows=max_rows;
w=cols*wm-vo_font->charspace;
h=rows*hm-vo_font->charspace;
if(w<dxs)
x0=(dxs-w)/2;
else
x0=0;
if(h<dys)
y0=(dys-h)/2;
else
y0=0;
wm12=wm>>1;
hm13=(hm+1)/3;
hm23=hm13<<1;
for(i=0;i<6;i+=2){
ax[i+0]=0;
aw[i+0]=wm12;
ax[i+1]=wm12;
aw[i+1]=wm-wm12;
}
for(i=0;i<2;i++){
ay[i+0]=0;
ah[i+0]=hm13;
ay[i+2]=hm13;
ah[i+2]=hm-hm23;
ay[i+4]=hm-hm13;
ah[i+4]=hm13;
}
obj->x = 0;
obj->y = 0;
obj->bbox.x1 = x0;
obj->bbox.y1 = y0;
obj->bbox.x2 = x0+w;
obj->bbox.y2 = y0+h;
obj->flags |= OSDFLAG_BBOX;
alloc_buf(obj);
for(i=0;i<9;i++)
buf[i]=malloc(wm*hm);
//alpha
if(vo_osd_teletext_format==TT_FORMAT_OPAQUE ||vo_osd_teletext_format==TT_FORMAT_OPAQUE_INV)
color=1;
else
color=200;
memset(buf[8],color,wm*hm);
//colors
if(vo_osd_teletext_format==TT_FORMAT_OPAQUE ||vo_osd_teletext_format==TT_FORMAT_TRANSPARENT){
for(i=0;i<8;i++){
memset(buf[i],(unsigned char)(1.0*(255-color)*colors[i]/255),wm*hm);
}
}else{
for(i=0;i<8;i++)
memset(buf[i],(unsigned char)(1.0*(255-color)*colors[7-i]/255),wm*hm);
}
y=y0;
for(i=0;i<rows;i++){
x=x0;
for(j=0;j<cols;j++){
tc=tdp[(i+start_row)*VBI_COLUMNS+j];
if(!tc.gfx){
/* Rendering one text character */
draw_alpha_buf(obj,x,y,wm,hm,buf[tc.bg],buf[8],wm);
if(tc.unicode!=0x20 && tc.unicode!=0x00 && !tc.ctl &&
(font=vo_font->font[tc.unicode])>=0 && y+hm<dys){
tt_draw_alpha_buf(obj,x,y,vo_font->width[tc.unicode],vo_font->height,
vo_font->pic_b[font]->bmp+vo_font->start[tc.unicode]-vo_font->charspace*vo_font->pic_a[font]->w,
vo_font->pic_b[font]->w,
buf[tc.fg][0],buf[tc.bg][0],buf[8][0]);
}
}else{
/*
Rendering one graphics character
TODO: support for separated graphics symbols (where six rectangles does not touch each other)
+--+ +--+ 87654321
|01| |12| --------
|10| <= |34| <= 00100110 <= 0x26
|01| |56|
+--+ +--+
(0:wm/2) (wm/2:wm-wm/2)
********** *********** (0:hm/3)
*** **** **** ****
*** 1 **** **** 2 ****
*** **** **** ****
********** ***********
********** ***********
********** *********** (hm/3:hm-2*hm/3)
********** ***********
*** **** **** ****
*** 3 **** **** 4 ****
*** **** **** ****
********** ***********
********** ***********
********** ***********
********** *********** (hm-hm/3:hm/3)
*** **** **** ****
*** 5 **** **** 6 ****
*** **** **** ****
********** ***********
********** ***********
*/
if(tc.gfx>1){ //separated gfx
for(b=0;b<6;b++){
color=(tc.unicode>>b)&1?tc.fg:tc.bg;
draw_alpha_buf(obj,x+ax[b]+1,y+ay[b]+1,aw[b]-2,ah[b]-2,buf[color],buf[8],wm);
}
//separated gfx (background borders)
//vertical
draw_alpha_buf(obj,x ,y,1,hm,buf[tc.bg],buf[8],wm);
draw_alpha_buf(obj,x+ax[1]-1,y,2,hm,buf[tc.bg],buf[8],wm);
draw_alpha_buf(obj,x+ax[1]+aw[1]-1,y,wm-ax[1]-aw[1]+1,hm,buf[tc.bg],buf[8],wm);
//horizontal
draw_alpha_buf(obj,x,y ,wm,1,buf[tc.bg],buf[8],wm);
draw_alpha_buf(obj,x,y+ay[0]+ah[0]-1,wm,2,buf[tc.bg],buf[8],wm);
draw_alpha_buf(obj,x,y+ay[2]+ah[2]-1,wm,2,buf[tc.bg],buf[8],wm);
draw_alpha_buf(obj,x,y+ay[4]+ah[4]-1,wm,hm-ay[4]-ah[4]+1,buf[tc.bg],buf[8],wm);
}else{
for(b=0;b<6;b++){
color=(tc.unicode>>b)&1?tc.fg:tc.bg;
draw_alpha_buf(obj,x+ax[b],y+ay[b],aw[b],ah[b],buf[color],buf[8],wm);
}
}
}
x+=wm;
}
y+=hm;
}
for(i=0;i<9;i++)
free(buf[i]);
}
#endif
int vo_osd_progbar_type=-1;
int vo_osd_progbar_value=100; // 0..256
@ -866,6 +1118,11 @@ int vo_update_osd(int dxs,int dys){
case OSDTYPE_SUBTITLE:
vo_update_text_sub(obj,dxs,dys);
break;
#ifdef HAVE_TV_TELETEXT
case OSDTYPE_TELETEXT:
vo_update_text_teletext(obj,dxs,dys);
break;
#endif
case OSDTYPE_PROGBAR:
vo_update_text_progbar(obj,dxs,dys);
break;
@ -933,6 +1190,9 @@ void vo_init_osd(void){
#ifdef USE_DVDNAV
new_osd_obj(OSDTYPE_DVDNAV);
#endif
#if HAVE_TV_TELETEXT
new_osd_obj(OSDTYPE_TELETEXT);
#endif
#ifdef HAVE_FREETYPE
force_load_font = 1;
#endif
@ -970,6 +1230,9 @@ void vo_draw_text(int dxs,int dys,void (*draw_alpha)(int x0,int y0, int w,int h,
break;
#ifdef USE_DVDNAV
case OSDTYPE_DVDNAV:
#endif
#ifdef HAVE_TV_TELETEXT
case OSDTYPE_TELETEXT:
#endif
case OSDTYPE_OSD:
case OSDTYPE_SUBTITLE:

12
libvo/sub.h
View File

@ -2,6 +2,10 @@
#ifndef MPLAYER_SUB_H
#define MPLAYER_SUB_H
#ifdef HAVE_TV_TELETEXT
#include "libmpcodecs/mp_image.h"
#endif
typedef struct mp_osd_bbox_s {
int x1,y1,x2,y2;
} mp_osd_bbox_t;
@ -11,6 +15,7 @@ typedef struct mp_osd_bbox_s {
#define OSDTYPE_PROGBAR 3
#define OSDTYPE_SPU 4
#define OSDTYPE_DVDNAV 5
#define OSDTYPE_TELETEXT 6
#define OSDFLAG_VISIBLE 1
#define OSDFLAG_CHANGED 2
@ -64,6 +69,13 @@ extern subtitle* vo_sub;
extern unsigned char* vo_osd_text;
#ifdef HAVE_TV_TELETEXT
extern void* vo_osd_teletext_page;
extern int vo_osd_teletext_half;
extern int vo_osd_teletext_mode;
extern int vo_osd_teletext_format;
#endif
extern int vo_osd_progbar_type;
extern int vo_osd_progbar_value; // 0..255

21
mpcommon.c
View File

@ -7,6 +7,9 @@
#include "libvo/video_out.h"
#include "spudec.h"
#include "vobsub.h"
#ifdef HAVE_TV_TELETEXT
#include "stream/tv.h"
#endif
double sub_last_pts = -303;
@ -138,3 +141,21 @@ void update_subtitles(sh_video_t *sh_video, demux_stream_t *d_dvdsub, int reset)
}
current_module=NULL;
}
void update_teletext(sh_video_t *sh_video, demuxer_t *demuxer, int reset)
{
#ifdef HAVE_TV_TELETEXT
tvi_handle_t* tvh=demuxer->priv;
if (demuxer->type != DEMUXER_TYPE_TV || !tvh) return;
if(tvh->functions->control(tvh->priv,TV_VBI_CONTROL_GET_VBIPAGE,&vo_osd_teletext_page)!=TVI_CONTROL_TRUE)
vo_osd_teletext_page=NULL;
if(tvh->functions->control(tvh->priv,TV_VBI_CONTROL_GET_HALF_PAGE,&vo_osd_teletext_half)!=TVI_CONTROL_TRUE)
vo_osd_teletext_half=0;
if(tvh->functions->control(tvh->priv,TV_VBI_CONTROL_GET_MODE,&vo_osd_teletext_mode)!=TVI_CONTROL_TRUE)
vo_osd_teletext_mode=0;
if(tvh->functions->control(tvh->priv,TV_VBI_CONTROL_GET_FORMAT,&vo_osd_teletext_format)!=TVI_CONTROL_TRUE)
vo_osd_teletext_format=0;
vo_osd_changed(OSDTYPE_TELETEXT);
#endif
}

3
mplayer.c
View File

@ -1621,6 +1621,7 @@ static int generate_video_frame(sh_video_t *sh_video, demux_stream_t *d_video)
decoded_frame = decode_video(sh_video, start, in_size, 0, pts);
if (decoded_frame) {
update_subtitles(sh_video, mpctx->d_sub, 0);
update_teletext(sh_video, mpctx->demuxer, 0);
update_osd_msg();
current_module = "filter video";
if (filter_video(sh_video, decoded_frame, sh_video->pts))
@ -2035,6 +2036,7 @@ static double update_video(int *blit_frame)
++total_frame_cnt;
}
update_subtitles(sh_video, mpctx->d_sub, 0);
update_teletext(sh_video, mpctx->demuxer, 0);
update_osd_msg();
current_module = "decode_video";
decoded_frame = decode_video(sh_video, start, in_size, drop_frame,
@ -2248,6 +2250,7 @@ static int seek(MPContext *mpctx, double amount, int style)
// be completely wrong (probably 0).
mpctx->sh_video->pts = mpctx->d_video->pts;
update_subtitles(mpctx->sh_video, mpctx->d_sub, 1);
update_teletext(mpctx->sh_video, mpctx->demuxer, 1);
}
if (mpctx->sh_audio) {