[Mplayer-cvslog] CVS: main/TOOLS/subfont-c Makefile,NONE,1.1 README,NONE,1.1 font.desc.tail,NONE,1.1 subfont.c,NONE,1.1
Arpi of Ize
arpi at mplayer.dev.hu
Thu Aug 9 19:28:09 CEST 2001
Update of /cvsroot/mplayer/main/TOOLS/subfont-c
In directory mplayer:/var/tmp.root/cvs-serv7693
Added Files:
Makefile README font.desc.tail subfont.c
Log Message:
mplayer font-generator using FreeType 2.x by Artur Zaprzala <zybi at fanthom.irc.pl>
--- NEW FILE ---
#font="/mnt/win/windows/fonts/arial.ttf"
#font="/mnt/win/windows/fonts/comic.ttf"
#font="/mnt/win/windows/fonts/verdanai.ttf"
font="/mnt/win/windows/fonts/verdana.ttf"
#encoding=windows-1250
encoding=iso-8859-2
fontsize=20
LDLIBS=-lm $(shell freetype-config --libs)
CFLAGS=-O3 $(shell freetype-config --cflags)
subfont: subfont.o
run: subfont
./subfont $(encoding) $(fontsize) $(font)
cat font.desc.tail >> font.desc
cp font.desc *.raw ~/.mplayer/font/
clean:
rm -f subfont subfont.o
--- NEW FILE ---
About:
~~~~~
`subfont' program renders antialiased fonts for mplayer using freetype library.
Should work with TrueType, Type1 and any other font supported by libfreetype.
Goals:
- internationalization: supports any 8 bit encoding (uses iconv).
- nice look: creates glyph `shadows' using algorithm derived from gaussian blur (slow!).
Note:
~~~~
Starting x position of each char and the bitmap width is aligned to multiple of 8
(required for under-development MMX renderer).
Usage:
~~~~~
Usage: subfont encoding ppem font [alphaFactor [minAlpha [radius]]]
Program creates 3 files: font.desc, <encoding>-a.raw, <encoding>-b.raw.
You should append font.desc.tail (desc for OSD characters by a'rpi & chass) to font.desc,
and copy font.desc and all *.raw files to ~/.mplayer/font/ directory.
encoding must be 8 bit encoding, like iso-8859-2.
To list encodings available on your system use iconv -l.
ppem Font size in pixels (e.g. 24).
font Font file path. Any format supported by freetype library (*.ttf, *.pf?, *).
alphaFactor Alpha map scaling factor (default is 1.0), float.
minAlpha Alpha map minimum value (default is 1.0, max is 255), float.
radius Alpha map blur radius (default is 6 pixels), integer.
Example:
~~~~~~~
make
./subfont iso-8859-2 20 verdana.ttf
cat font.desc.tail >> font.desc
cp font.desc *.raw ~/.mplayer/font/
Author:
~~~~~~
Artur Zaprzala <zybi at fanthom.irc.pl>
--- NEW FILE ---
;
; Mplayer subtitle font description file - HighreS ONE
; font created by a'rpi & chass
; .desc created by chass & atmosfear
; -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;
;
; This file contains the data for Mplayer to build up the font
; table from the bitmap files. These fonts are used for the OSD
; (On Screen Display) and for the subtitles.
;
;
; A few words for the novice user about the fonts:
; -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;
; Mplayer uses antialiased bitmap fonts, which look far better
; then the TTF rendering used by other players. A letter consists
; of two main parts: the Bitmap and the Alpha chanel. The bitmap
; is what you see on the screen, and the Aplha chanel makes the
; Font fade smoothly ito the background. And in this font we use
; the alpha to get a smooth black outline of the letters, which
; makes them visible even on white areas of the movie.
;
; Mplayer needs at least two seperate 8bit/pixel format bitmap
; files and a .desc file to be able to use the font. One of the
; files is the bitmap the other is the alpha. The .desc (like this
; one) gives Mplayer the information needed to convert a bitmap
; to characters. But the .desc allows to use more bitmap and alpha
; files: this feature is useful when one wants to add local language
; support for the subtitles.
;
; -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;
; ABOUT THE .DESC
;
; [1],File layout: the file consists of several sections,
; the sections are marked like [XXX] where XXX is the section
; name. The three main sections:
;
; [info]: gives general information about the font, like the
; version of the .desc, the author's name and general
; rendering options like kerning.
;
; [files] & [characters] : they go togeather, they describe
; the place of characters in the bitmap.
; Up to 16 is allowed per .desc
;
; [2],The variables:
;
; [info]
; name string name of the font, and misc information
; desc int Version of this file
; spacewidth int num of pixels for #32
; charspace int the distance between chars
; height int the distance between rows
; [files]
; alpha string name of alpha map file
; bitmap string name of bitmap file
; [character]
; string int int the positon of a character
;
;
; MPlayer can build up it's font table from up to 16*2 files (16 bitmap
; and 16 alpha channels).
;
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;informations about the font
;[info]
;the author and other stuff
;name "HighreS ONE - created by A'rpi and cHaSS - pre-alpha version"
;version number of the file (if greater than version MPlayer can
;handle, then ignores the unknown variables)
;descversion 1
;the length of #32 in pixels
;spacewidth 13
;the distance between chars. the alpha renderer can handle
;negative numbers too
;charspace -3
;height 26
;height 35
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;file section
;[files]
;the name of the alpha file used for the next [characters]
;section
;alpha arpi_a.raw
;alpha nfont_a.raw
;the name of the bitmap file used for the next [characters]
;section
;bitmap arpi_b.raw
;bitmap nfont_b.raw
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;the description of the characters:
;each row specifies one character: first, the char (between " or ')
;then the x-coordinate of the beginning and the end.
;[characters]
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
[files]
alpha arpi_osd_a.raw
bitmap arpi_osd_b.raw
[characters]
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;Symbols for the OSD
; range form 01 to 1F
;play
0x01 0 36
;pause
0x02 35 71
;stop
0x03 70 106
;rewind
0x04 116 152
;fast forward
0x05 164 200
;clock symbol for the OSD
0x06 209 245
;contrast
0x07 256 292
;stauration
0x08 305 342
;volume
0x09 354 400
;brightness
0x0A 407 442
;Hue
0x0B 457 494
;-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
;OSD progress bar characters
;
[files]
alpha arpi_progress_a.raw
bitmap arpi_progress_b.raw
[characters]
; [ character
0x10 4 21
; | character
0x11 30 41
; ] character
0x12 50 66
; . char
0x13 74 85
--- NEW FILE ---
/*
* Renders antialiased fonts for mplayer using freetype library.
* Should work with TrueType, Type1 and any other font supported by libfreetype.
*
* Goals:
* - internationalization: supports any 8 bit encoding (uses iconv).
* - nice look: creates glyph `shadows' using algorithm derived from gaussian blur.
*
*
* Artur Zaprzala <zybi at fanthom.irc.pl>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <iconv.h>
#include <math.h>
#include <string.h>
#if 1 /* freetype 2.0.1 */
#include <freetype/freetype.h>
#else /* freetype 2.0.3 */
#include <ft2build.h>
#include FT_FREETYPE_H
#endif
#include FT_GLYPH_H
#define f266toInt(x) (((x)+32)>>6) /* round fractional fixed point number to integer */
/* coordinates are in 26.6 pixels (i.e. 1/64th of pixels) */
int const test = 0;
/* default values */
char *encoding = "iso-8859-1"; /* target encoding */
char *charmap = "ucs-4le"; /* font charmap encoding */
int ppem = 20; /* font size in pixels */
int const colors = 256;
int const maxcolor = 255;
int radius = 6; /* blur radius */
double minalpha = 1.0; /* good value for minalpha is 0.5 */
double alpha_factor = 1.0;
int const first_char = 33;
int const charset_size = 256;
char *command;
char *font_path = NULL;
/*char *font_metrics = NULL;*/
unsigned char *buffer;
unsigned char *abuffer;
int width, height;
FT_ULong ustring[256];
#define eprintf(...) fprintf(stderr, __VA_ARGS__)
#define ERROR(msg, ...) (eprintf("%s: error: " msg "\n", command, ##__VA_ARGS__), exit(1))
#define WARNING(msg, ...) eprintf("%s: warning: " msg "\n", command, ##__VA_ARGS__)
void paste_bitmap(FT_Bitmap *bitmap, int x, int y) {
int drow = x+y*width;
int srow = 0;
int sp, dp, w, h;
if (bitmap->pixel_mode==ft_pixel_mode_mono)
for (h = bitmap->rows; h>0; --h, drow+=width, srow+=bitmap->pitch)
for (w = bitmap->width, sp=dp=0; w>0; --w, ++dp, ++sp)
buffer[drow+dp] = (bitmap->buffer[srow+sp/8] & (0x80>>(sp%8))) ? 255:0;
else
for (h = bitmap->rows; h>0; --h, drow+=width, srow+=bitmap->pitch)
for (w = bitmap->width, sp=dp=0; w>0; --w, ++dp, ++sp)
buffer[drow+dp] = bitmap->buffer[srow+sp];
}
void write_header(FILE *f) {
static unsigned char header[800] = "mhwanh";
int i;
header[7] = 4;
header[8] = width>>8; header[9] = (unsigned char)width;
header[10] = height>>8; header[11] = (unsigned char)height;
header[12] = colors>>8; header[13] = (unsigned char)colors;
for (i = 32; i<800; ++i) header[i] = (i-32)/3;
fwrite(header, 1, 800, f);
}
void write_bitmap() {
FILE *f;
int const max_name = 128;
char name[max_name];
snprintf(name, max_name, "%s-b.raw", encoding);
f = fopen(name, "wb");
if (f==NULL) ERROR("fopen failed.");
write_header(f);
fwrite(buffer, 1, width*height, f);
fclose(f);
snprintf(name, max_name, "%s-a.raw", encoding);
f = fopen(name, "wb");
if (f==NULL) ERROR("fopen failed.");
write_header(f);
fwrite(abuffer, 1, width*height, f);
fclose(f);
}
void render() {
FT_Library library;
FT_Face face;
FT_Error error;
FT_GlyphSlot slot;
FT_ULong glyph_index;
FT_Glyph glyphs[charset_size];
FILE *f;
int const load_flags = FT_LOAD_DEFAULT | FT_LOAD_NO_HINTING;
int pen_x, pen_xa, pen_y, ymin, ymax;
int i, c;
int baseline, space_advance = 20;
/* initialize freetype */
error = FT_Init_FreeType(&library);
if (error) ERROR("Init_FreeType failed.");
error = FT_New_Face(library, font_path, 0, &face);
if (error) ERROR("New_Face failed.");
/*
if (font_metrics) {
error = FT_Attach_File(face, font_metrics);
if (error) WARNING("Attach_File failed.");
}
*/
if (face->charmap->encoding!=ft_encoding_unicode)
WARNING("Selected font has no unicode charmap. Very bad!");
/* set size */
if (FT_IS_SCALABLE(face)) {
error = FT_Set_Pixel_Sizes(face, ppem, ppem);
} else {
int j = 0;
int jppem = face->available_sizes[0].height;
/* find closest size */
for (i = 0; i<face->num_fixed_sizes; ++i) {
if (abs(face->available_sizes[i].height - ppem) < abs(face->available_sizes[i].height - jppem)) {
j = i;
jppem = face->available_sizes[i].height;
}
}
WARNING("Selected font is not scalable. Using ppem=%i", face->available_sizes[j].height);
error = FT_Set_Pixel_Sizes(face, face->available_sizes[j].width, face->available_sizes[j].height);
}
if (error) WARNING("Set_Pixel_Sizes failed.");
if (FT_IS_FIXED_WIDTH(face))
WARNING("Selected font is fixed-width.");
/* compute space advance */
error = FT_Load_Char(face, ' ', load_flags);
if (error) WARNING("spacewidth set to default.");
else space_advance = f266toInt(face->glyph->advance.x); /* +32 is for rounding */
/* create font.desc */
f = fopen("font.desc", "w");
if (f==NULL) ERROR("fopen failed.");
/* print font.desc header */
fprintf(f, "[info]\n");
fprintf(f, "name 'File generated for %s encoding using `%s%s%s' face (%s), ppem=%i'\n",
encoding,
face->family_name,
face->style_name ? " ":"", face->style_name ? face->style_name:"",
font_path,
ppem);
fprintf(f, "descversion 1\n");
fprintf(f, "spacewidth %i\n", 2*radius + space_advance);
fprintf(f, "charspace %i\n", -2*radius);
fprintf(f, "height %i\n", f266toInt(face->size->metrics.height));
fprintf(f, "\n[files]\n");
fprintf(f, "alpha %s-a.raw\n", encoding);
fprintf(f, "bitmap %s-b.raw\n", encoding);
fprintf(f, "\n[characters]\n");
/* compute bbox and [characters] section*/
pen_x = 0;
pen_y = 0;
ymin = INT_MAX;
ymax = INT_MIN;
for (c= first_char, i= 0; c<charset_size; ++c, ++i) {
FT_UInt glyph_index;
FT_BBox bbox;
glyph_index = FT_Get_Char_Index(face, ustring[i]);
if (glyph_index<=0) {
WARNING("Glyph for char %3i|%2X|U%04X not found.", c, c, ustring[i]);
continue;
}
error = FT_Load_Glyph(face, glyph_index, load_flags);
if (error) {
WARNING("Load_Glyph %3u|%2X (char %3i|%2X|U%04X) failed.", glyph_index, glyph_index, c, c, ustring[i]);
continue;
}
slot = face->glyph;
error = FT_Get_Glyph(slot, &glyphs[i]);
FT_Glyph_Get_CBox(glyphs[i], ft_glyph_bbox_pixels, &bbox);
if (pen_y+bbox.yMax>ymax) {
ymax = pen_y+bbox.yMax;
/* eprintf("%3i: ymax %i (%c)\n", c, ymax, c); */
}
if (pen_y+bbox.yMin<ymin) {
ymin = pen_y+bbox.yMin;
/* eprintf("%3i: ymin %i (%c)\n", c, ymin, c); */
}
/* advance pen */
pen_xa = pen_x + f266toInt(slot->advance.x) + 2*radius;
/* pen_y += f266toInt(slot->advance.y); // for vertical layout */
/* font.desc */
if (c=='\'')
fprintf(f, "\"%c\" %i %i\n", c, pen_x, pen_xa-1);
else
fprintf(f, "'%c' %i %i\n", c, pen_x, pen_xa-1);
pen_x = (pen_xa+7)&~7; /* 8 byte align */
}
fclose(f);
if (ymax<=ymin) ERROR("Something went wrong.");
width = pen_x;
height = ymax - ymin + 2*radius;
baseline = ymax + radius;
eprintf("bitmap size: %ix%i\n", width, height);
buffer = (unsigned char*)malloc(width*height);
abuffer = (unsigned char*)malloc(width*height);
if (buffer==NULL || abuffer==NULL) ERROR("malloc failed.");
/* render glyphs */
pen_x = 0;
pen_y = baseline;
for (c= first_char, i= 0; c<charset_size; ++c, ++i) {
FT_UInt glyph_index;
glyph_index = FT_Get_Char_Index(face, ustring[i]);
if (glyph_index==0) continue;
error = FT_Load_Glyph(face, glyph_index, load_flags);
if (error) {
/* WARNING("Load_Glyph failed"); */
continue;
}
error = FT_Render_Glyph(face->glyph, ft_render_mode_normal);
if (error) WARNING("Render_Glyph %3i|%2X (char %3i|%2X|U%04X) failed.", glyph_index, glyph_index, c, c, ustring[i]);
slot = face->glyph;
paste_bitmap(&slot->bitmap,
pen_x + radius + slot->bitmap_left,
pen_y - slot->bitmap_top );
/* advance pen */
pen_x += f266toInt(slot->advance.x) + 2*radius;
/* pen_y += f266toInt(slot->advance.y); // for vertical layout */
pen_x = (pen_x+7)&~7; /* 8 byte align */
}
error = FT_Done_FreeType(library);
if (error) ERROR("Done_FreeType failed.");
}
void prepare_charset() {
iconv_t cd;
unsigned char text[charset_size];
char *inbuf = text;
char *outbuf = (char*) ustring;
int inbuf_left = charset_size;
int outbuf_left = 4*charset_size;
int i;
size_t count;
for (i = first_char; i<charset_size; ++i) text[i-first_char] = i;
/* check if ucs-4le is available */
cd = iconv_open(charmap, charmap);
if (cd==(iconv_t)-1) ERROR("iconv doesn't know %s encoding. Use the source!", charmap);
iconv_close(cd);
cd = iconv_open(charmap, encoding);
if (cd==(iconv_t)-1) ERROR("Unsupported encoding, use iconv -l to list character sets known on your system.");
while (1) {
count = iconv(cd, &inbuf, &inbuf_left, &outbuf, &outbuf_left);
if (inbuf_left==0) break;
/* skip undefined characters */
inbuf+= 1;
inbuf_left-= 1;
*(FT_ULong*)outbuf = 0;
outbuf+= 4;
}
iconv_close(cd);
}
void blur() {
int const r = radius;
int const w = 2*r+1; /* matrix size */
double const A = log(minalpha/maxcolor)/((r+1)*(r+1));
double const B = alpha_factor * maxcolor;
int i, x, y, mx, my;
unsigned char *m = (unsigned char*)malloc(w*w);
if (m==NULL) ERROR("malloc failed");
/* Gaussian matrix */
for (my = 0; my<w; ++my) {
for (mx = 0; mx<w; ++mx) {
m[mx+my*w] = (int)(exp(A * ((mx-r)*(mx-r)+(my-r)*(my-r))) * B + .5);
if (test) eprintf("%3i ", m[mx+my*w]);
}
if (test) eprintf("\n");
}
/* This is not a gaussian blur! */
/* And is very slow */
for (y = 0; y<height; ++y)
for (x = 0; x<width; ++x) {
int max = -1;
for (my = -r; my<=r; ++my)
if (y+my>=0 && y+my<height)
for (mx = -r; mx<=r; ++mx) {
if (x+mx>=0 && x+mx<width) {
int p = buffer[x+mx+(y+my)*width] * m[mx+r+(my+r)*w];
if (p>max) {
max = p;
abuffer[x+y*width] = (p + maxcolor/2) / maxcolor;
}
}
}
}
free(m);
}
void usage() {
printf("Usage: %s encoding ppem font [alphaFactor [minAlpha [radius]]]\n", command);
printf(
" Program creates 3 files: font.desc, <encoding>-a.raw, <encoding>-b.raw.\n"
" You should append font.desc.tail (desc for OSD characters by a'rpi & chass) to font.desc,\n"
" and copy font.desc and all *.raw files to ~/.mplayer/font/ directory.\n"
"\n"
" encoding must be 8 bit encoding, like iso-8859-2.\n"
" To list encodings available on your system use iconv -l.\n"
" ppem Font size in pixels (e.g. 24).\n"
" font Font file path. Any format supported by freetype library (*.ttf, *.pf?, *).\n"
" alphaFactor Alpha map scaling factor (default is 1.0), float.\n"
" minAlpha Alpha map minimum value (default is 1.0, max is 255), float.\n"
" radius Alpha map blur radius (default is 6 pixels), integer.\n"
);
exit(1);
}
void parse_args(int argc, char **argv) {
int i;
double d;
command = strrchr(argv[0], '/');
if (command==NULL) command = argv[0];
else ++command;
if (argc<4) usage();
encoding = argv[1];
i = atoi(argv[2]);
if (i>1) ppem = i;
font_path = argv[3];
if (argc>4) {
d = atof(argv[4]);
if (d>0.001 && d<1000.) alpha_factor = d;
else WARNING("alphaFactor set to default.");
}
if (argc>5) {
d = atof(argv[5]);
if (d>0.1 && d<=maxcolor) minalpha = d;
else WARNING("minAlpha set to default.");
}
if (argc>6) {
i = atoi(argv[6]);
if (i>=0 && i<20) radius = i;
else WARNING("radius set to default.");
}
}
int main(int argc, char **argv) {
parse_args(argc, argv);
prepare_charset();
render();
blur();
write_bitmap();
free(buffer);
free(abuffer);
puts(
"\n"
"*****************************************\n"
"* Remember to run: *\n"
"* cat font.desc.tail >> font.desc *\n"
"*****************************************"
);
return 0;
}
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