/*
- ttf.cc -- implement ttf -> pfa routine.
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2005--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
- (c) 2005--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ LilyPond 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 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond 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 LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <cstdio>
#include "freetype.hh"
-#include <freetype/tttables.h>
+#include FT_TRUETYPE_TABLES_H
-#include "lily-proto.hh"
+#include "international.hh"
#include "memory-stream.hh"
#include "warn.hh"
#include "lily-guile.hh"
#include "main.hh"
#include "open-type-font.hh"
-
Index_to_charcode_map
make_index_to_charcode_map (FT_Face face)
{
FT_UInt gindex;
FT_CharMap current_cmap = face->charmap;
- FT_Select_Charmap(face, FT_ENCODING_UNICODE);
+ FT_Select_Charmap (face, FT_ENCODING_UNICODE);
int j = 0;
for (charcode = FT_Get_First_Char (face, &gindex); gindex != 0;
}
FT_Set_Charmap (face, current_cmap);
-
return m;
}
lily_cookie_fprintf (out, "%d dict begin\n", 11);
lily_cookie_fprintf (out, "/FontName /%s def\n",
- FT_Get_Postscript_Name (face));
+ FT_Get_Postscript_Name (face));
lily_cookie_fprintf (out, "/Encoding StandardEncoding def\n");
lily_cookie_fprintf (out, "/PaintType 0 def\n");
TT_Header *ht
= (TT_Header *)FT_Get_Sfnt_Table (face, ft_sfnt_head);
- lily_cookie_fprintf (out, "/FontBBox [%ld %ld %ld %ld] def\n",
- ht->xMin *1000L / ht->Units_Per_EM,
- ht->yMin *1000L / ht->Units_Per_EM,
- ht->xMax *1000L / ht->Units_Per_EM,
- ht->yMax *1000L / ht->Units_Per_EM);
+ lily_cookie_fprintf (out, "/FontBBox [%lf %lf %lf %lf] def\n",
+ float (ht->xMin) / float (ht->Units_Per_EM),
+ float (ht->yMin) / float (ht->Units_Per_EM),
+ float (ht->xMax) / float (ht->Units_Per_EM),
+ float (ht->yMax) / float (ht->Units_Per_EM));
lily_cookie_fprintf (out, "/FontType 42 def\n");
lily_cookie_fprintf (out, "/FontInfo 8 dict dup begin\n");
- lily_cookie_fprintf (out, "/version (%d.%d) def\n",
- int (ht->Font_Revision >> 16),
- int (ht->Font_Revision &((1 << 16) -1)));
+ lily_cookie_fprintf (out, "/version (%.3f) def\n",
+ ht->Font_Revision / 65536.0);
#if 0
if (strings[0])
#endif
lily_cookie_fprintf (out, "/isFixedPitch %s def\n",
- pt->isFixedPitch ? "true" : "false");
- lily_cookie_fprintf (out, "/UnderlinePosition %ld def\n",
- pt->underlinePosition *1000L / ht->Units_Per_EM);
- lily_cookie_fprintf (out, "/UnderlineThickness %ld def\n",
- pt->underlineThickness *1000L / ht->Units_Per_EM);
+ pt->isFixedPitch ? "true" : "false");
+ lily_cookie_fprintf (out, "/UnderlinePosition %lf def\n",
+ float (pt->underlinePosition)
+ / float (ht->Units_Per_EM));
+ lily_cookie_fprintf (out, "/UnderlineThickness %lf def\n",
+ float (pt->underlineThickness)
+ / float (ht->Units_Per_EM));
lily_cookie_fprintf (out, "end readonly def\n");
}
#define CHUNKSIZE 65534
-static void
-print_body (void *out, string name)
+const FT_ULong FT_ENC_TAG (glyf_tag, 'g', 'l', 'y', 'f');
+const FT_ULong FT_ENC_TAG (head_tag, 'h', 'e', 'a', 'd');
+const FT_ULong FT_ENC_TAG (loca_tag, 'l', 'o', 'c', 'a');
+
+static
+void t42_write_table (void *out, FT_Face face, unsigned char const *buffer,
+ size_t s, bool is_glyf,
+ FT_ULong head_length, FT_ULong loca_length)
{
- FILE *fd = fopen (name.c_str (), "rb");
+ vector<FT_UShort> chunks;
+ if (is_glyf)
+ {
+ /* compute chunk sizes */
+ unsigned char *head_buf = new unsigned char[head_length];
+ FT_Error error = FT_Load_Sfnt_Table (face, head_tag, 0, head_buf, NULL);
+ if (error)
+ programming_error ("FT_Load_Sfnt_Table (): error.");
+
+ /* we access the lower byte of indexToLocFormat */
+ bool long_offsets = head_buf[4 * 4 + 2 * 2 + 2 * 8 + 4 * 2 + 3 * 2 + 1] == 1;
+
+ delete[] head_buf;
+
+ unsigned char *loca_buf = new unsigned char[loca_length];
+ error = FT_Load_Sfnt_Table (face, loca_tag, 0, loca_buf, NULL);
+ if (error)
+ programming_error ("FT_Load_Sfnt_Table (): error.");
+
+ unsigned char *p = loca_buf;
+ unsigned char *endp = loca_buf + loca_length;
+
+ FT_ULong offset = 0, last_offset = 0, last_chunk = 0;
+ while (p < endp)
+ {
+ if (long_offsets)
+ {
+ offset = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
+ p += 4;
+ }
+ else
+ {
+ offset = ((p[0] << 8) | p[1]) << 1;
+ p += 2;
+ }
+ if (offset > last_offset + CHUNKSIZE)
+ {
+ if (last_chunk != last_offset)
+ chunks.push_back (FT_UShort (last_offset - last_chunk));
+ /*
+ a single glyph with more than 64k data
+ is a pathological case but...
+ */
+ FT_ULong rest = offset - last_offset;
+ while (rest > CHUNKSIZE)
+ {
+ chunks.push_back (CHUNKSIZE);
+ rest -= CHUNKSIZE;
+ }
+ chunks.push_back (FT_UShort (rest));
+ last_chunk = offset;
+ }
+ else if (offset > last_chunk + CHUNKSIZE)
+ {
+ chunks.push_back (FT_UShort (last_offset - last_chunk));
+ last_chunk = last_offset;
+ }
+
+ last_offset = offset;
+ }
+ chunks.push_back (FT_UShort (s - last_chunk));
+
+ delete[] loca_buf;
+ }
+ else if (s > CHUNKSIZE)
+ {
+ FT_ULong rest = s;
+ while (rest > CHUNKSIZE)
+ {
+ chunks.push_back (CHUNKSIZE);
+ rest -= CHUNKSIZE;
+ }
+ chunks.push_back (FT_UShort (rest));
+ }
+ else
+ chunks.push_back (CHUNKSIZE);
+
+ lily_cookie_fprintf (out, "\n"
+ " <");
+
+ int l = 0;
static char xdigits[] = "0123456789ABCDEF";
- unsigned char *buffer;
- int i, j;
+ int cur_chunk_idx = 0;
+ for (size_t j = 0; j < s; j++)
+ {
+ if (l >= chunks[cur_chunk_idx])
+ {
+ lily_cookie_fprintf (out, "\n"
+ " 00>\n"
+ " <");
+ l = 0;
+ cur_chunk_idx++;
+ }
+
+ if (l % 31 == 0)
+ lily_cookie_fprintf (out, "\n"
+ " ");
+
+ /* lily_cookie_fprintf (out,"%02X",(int)buffer[j]) is too slow */
+ lily_cookie_putc (xdigits[(buffer[j] & 0xF0) >> 4], out);
+ lily_cookie_putc (xdigits[buffer[j] & 0x0F], out);
+
+ l++;
+ }
+
+ /* pad to four-byte boundary */
+ while ((s++) % 4 != 0)
+ lily_cookie_fprintf (out, "00");
+
+ lily_cookie_fprintf (out, "\n"
+ " 00\n"
+ " >");
+}
+
+static void
+print_body (void *out, FT_Face face)
+{
+ FT_UInt idx = 0;
+ FT_ULong head_length = 0, loca_length = 0;
+ FT_ULong tag, length;
+ vector<FT_ULong> lengths, tags;
+
+ /*
+ we must build our own TTF header -- the original font
+ might be a TTC where tables are not contiguous, or the font
+ contains tables which aren't indexed at all
+ */
+ while (FT_Sfnt_Table_Info (face, idx, &tag, &length)
+ != FT_Err_Table_Missing)
+ {
+ lengths.push_back (length);
+ tags.push_back (tag);
+ if (tag == head_tag)
+ head_length = length;
+ else if (tag == loca_tag)
+ loca_length = length;
+ idx++;
+ }
+
+ FT_ULong hlength = 12 + 16 * idx;
+
+ unsigned char *hbuf = new unsigned char[hlength];
+ unsigned char *p;
+
+ hbuf[0] = 0x00; /* version */
+ hbuf[1] = 0x01;
+ hbuf[2] = 0x00;
+ hbuf[3] = 0x00;
+ hbuf[4] = (unsigned char) ((idx & 0xFF00) >> 8); /* numTables */
+ hbuf[5] = idx & 0x00FF;
+
+ FT_UInt searchRange, entrySelector, rangeShift;
+ FT_UInt i, j;
+ for (i = 1, j = 2; j <= idx; i++, j <<= 1)
+ ;
+ entrySelector = i - 1;
+ searchRange = 0x10 << entrySelector;
+ rangeShift = (idx << 4) - searchRange;
+
+ hbuf[6] = (unsigned char) ((searchRange & 0xFF00) >> 8);
+ hbuf[7] = searchRange & 0x00FF;
+ hbuf[8] = (unsigned char) ((entrySelector & 0xFF00) >> 8);
+ hbuf[9] = entrySelector & 0x00FF;
+ hbuf[10] = (unsigned char) ((rangeShift & 0xFF00) >> 8);
+ hbuf[11] = rangeShift & 0x00FF;
+
+ p = &hbuf[12];
+
+ FT_ULong checksum, font_checksum = 0;
+
+ FT_ULong offset = hlength; /* first table offset */
- buffer = new unsigned char[CHUNKSIZE];
+ for (FT_UInt i = 0; i < idx; i++)
+ {
+ /* here, the buffer length must be a multiple of 4 */
+ FT_ULong len = (lengths[i] + 3) & ~3;
+ unsigned char *buf = new unsigned char[len];
+
+ buf[len - 1] = 0x00; /* assure padding with zeros */
+ buf[len - 2] = 0x00;
+ buf[len - 3] = 0x00;
+
+ FT_Error error = FT_Load_Sfnt_Table (face, tags[i], 0, buf, NULL);
+ if (error)
+ programming_error ("FT_Load_Sfnt_Table (): error.");
+
+ if (tag == head_tag)
+ {
+ /*
+ first pass of computing the font checksum
+ needs checkSumAdjustment = 0
+ */
+ buf[8] = 0x00;
+ buf[9] = 0x00;
+ buf[10] = 0x00;
+ buf[11] = 0x00;
+ }
+
+ checksum = 0;
+ unsigned char *endq = buf + len;
+ for (unsigned char *q = buf; q < endq; q += 4)
+ checksum += (q[0] << 24) | (q[1] << 16) | (q[2] << 8) | q[3];
+ font_checksum += checksum;
+
+ delete[] buf;
+
+ *(p++) = (unsigned char) ((tags[i] & 0xFF000000UL) >> 24);
+ *(p++) = (unsigned char) ((tags[i] & 0x00FF0000UL) >> 16);
+ *(p++) = (unsigned char) ((tags[i] & 0x0000FF00UL) >> 8);
+ *(p++) = tags[i] & 0x000000FFUL;
+
+ *(p++) = (unsigned char) ((checksum & 0xFF000000UL) >> 24);
+ *(p++) = (unsigned char) ((checksum & 0x00FF0000UL) >> 16);
+ *(p++) = (unsigned char) ((checksum & 0x0000FF00UL) >> 8);
+ *(p++) = checksum & 0x000000FFUL;
+
+ *(p++) = (unsigned char) ((offset & 0xFF000000UL) >> 24);
+ *(p++) = (unsigned char) ((offset & 0x00FF0000UL) >> 16);
+ *(p++) = (unsigned char) ((offset & 0x0000FF00UL) >> 8);
+ *(p++) = offset & 0x000000FFUL;
+
+ *(p++) = (unsigned char) ((lengths[i] & 0xFF000000UL) >> 24);
+ *(p++) = (unsigned char) ((lengths[i] & 0x00FF0000UL) >> 16);
+ *(p++) = (unsigned char) ((lengths[i] & 0x0000FF00UL) >> 8);
+ *(p++) = lengths[i] & 0x000000FFUL;
+
+ /* offset must be a multiple of 4 */
+ offset += (lengths[i] + 3) & ~3;
+ }
+
+ /* add checksum of TTF header */
+ checksum = 0;
+ for (unsigned char *q = hbuf; q < p; q += 4)
+ checksum += (q[0] << 24) | (q[1] << 16) | (q[2] << 8) | q[3];
+ font_checksum += checksum;
+ font_checksum = 0xB1B0AFBAUL - font_checksum;
+
+ /*
+ see Adobe technical note 5012.Type42_Spec.pdf for details how
+ the /sfnts array must be constructed
+ */
lily_cookie_fprintf (out, "/sfnts [");
- for (;;)
+ t42_write_table (out, face, hbuf, hlength, false,
+ head_length, loca_length);
+ delete[] hbuf;
+
+ idx = 0;
+
+ while (FT_Sfnt_Table_Info (face, idx, &tag, &length)
+ != FT_Err_Table_Missing)
{
- i = fread (buffer, 1, CHUNKSIZE, fd);
- if (i == 0)
- break;
- lily_cookie_fprintf (out, "\n<");
- for (j = 0; j < i; j++)
- {
- if (j != 0 && j % 36 == 0)
- lily_cookie_putc ('\n', out);
- /* lily_cookie_fprintf (out,"%02X",(int)buffer[j]) is too slow */
- lily_cookie_putc (xdigits[ (buffer[j] & 0xF0) >> 4], out);
- lily_cookie_putc (xdigits[buffer[j] & 0x0F], out);
- }
- lily_cookie_fprintf (out, "00>"); /* Adobe bug? */
- if (i < CHUNKSIZE)
- break;
+ unsigned char *buf = new unsigned char[length];
+ FT_Error error = FT_Load_Sfnt_Table (face, tag, 0, buf, NULL);
+ if (error)
+ programming_error ("FT_Load_Sfnt_Table (): error.");
+
+ if (tag == head_tag)
+ {
+ /* in the second pass simply store the computed font checksum */
+ buf[8] = (unsigned char) ((font_checksum & 0xFF000000UL) >> 24);
+ buf[9] = (unsigned char) ((font_checksum & 0x00FF0000UL) >> 16);
+ buf[10] = (unsigned char) ((font_checksum & 0x0000FF00UL) >> 8);
+ buf[11] = font_checksum & 0x000000FFUL;
+ }
+
+ bool is_glyf_table = tag == glyf_tag && length > CHUNKSIZE;
+ t42_write_table (out, face, buf, length, is_glyf_table,
+ head_length, loca_length);
+
+ delete[] buf;
+ idx++;
}
lily_cookie_fprintf (out, "\n] def\n");
- delete[] buffer;
- fclose (fd);
}
static void
print_trailer (void *out,
- FT_Face face)
+ FT_Face face)
{
const int GLYPH_NAME_LEN = 256;
char glyph_name[GLYPH_NAME_LEN];
{
glyph_name[0] = 0;
if (face->face_flags & FT_FACE_FLAG_GLYPH_NAMES)
- {
- FT_Error error = FT_Get_Glyph_Name (face, i, glyph_name,
- GLYPH_NAME_LEN);
- if (error)
- {
- programming_error ("print_trailer(): FT_Get_Glyph_Name() returned error");
- glyph_name[0] = 0;
- }
- }
+ {
+ FT_Error error = FT_Get_Glyph_Name (face, i, glyph_name,
+ GLYPH_NAME_LEN);
+ if (error)
+ {
+ programming_error ("FT_Get_Glyph_Name (): error.");
+ glyph_name[0] = 0;
+ }
+ }
if (!glyph_name[0] && ic_map.find (i) != ic_map.end ())
- {
- FT_ULong ucode = ic_map[i];
- get_unicode_name (glyph_name, ucode);
- }
+ {
+ FT_ULong ucode = ic_map[i];
+ get_unicode_name (glyph_name, ucode);
+ }
- if (glyph_name == string (".notdef"))
- glyph_name[0] = '\0';
+ if (i == 0)
+ sprintf (glyph_name, ".notdef");
+ else if (glyph_name == string (".notdef"))
+ glyph_name[0] = '\0';
-
if (!glyph_name[0])
- {
- get_glyph_index_name (glyph_name, i);
- }
-
+ get_glyph_index_name (glyph_name, i);
+
if (glyph_name[0])
- {
- lily_cookie_fprintf (out, "/%s %d def ", glyph_name, i);
- output_count ++;
- }
+ {
+ lily_cookie_fprintf (out, "(%s) cvn %d def ", glyph_name, i);
+ output_count++;
+ }
else
- {
- programming_error (to_string ("no name for glyph %d", i));
- }
-
+ programming_error (to_string ("no name for glyph %d", i));
+
if (! (output_count % 5))
- lily_cookie_fprintf (out, "\n");
+ lily_cookie_fprintf (out, "\n");
}
lily_cookie_fprintf (out, "end readonly def\n");
}
static void
-create_type42_font (void *out, string name)
+create_type42_font (void *out, const string &name, int idx)
{
- FT_Face face = open_ft_face (name);
+ FT_Face face;
+
+ /* check whether font index is valid */
+ if (idx > 0)
+ {
+ face = open_ft_face (name, -1);
+ if (idx >= face->num_faces)
+ {
+ warning (_f ("font index %d too large for font `%s', using index 0",
+ idx, name.c_str ()));
+ idx = 0;
+ }
+ FT_Done_Face (face);
+ }
+
+ face = open_ft_face (name, idx);
print_header (out, face);
- print_body (out, name);
+ print_body (out, face);
print_trailer (out, face);
FT_Done_Face (face);
}
-
LY_DEFINE (ly_ttf_ps_name, "ly:ttf-ps-name",
- 1, 0, 0, (SCM ttf_file_name),
- "Extract the PostScript name from a TrueType font.")
+ 1, 1, 0, (SCM ttf_file_name, SCM idx),
+ "Extract the PostScript name from a TrueType font. The optional"
+ " @var{idx} argument is useful for TrueType collections (TTC)"
+ " only; it specifies the font index within the TTC. The default"
+ " value of @var{idx} is@tie{}0.")
{
- SCM_ASSERT_TYPE (scm_is_string (ttf_file_name), ttf_file_name,
- SCM_ARG1, __FUNCTION__, "string");
+ LY_ASSERT_TYPE (scm_is_string, ttf_file_name, 1);
+
+ int i = 0;
+ if (idx != SCM_UNDEFINED)
+ {
+ LY_ASSERT_TYPE (scm_is_integer, idx, 2);
+ i = scm_to_int (idx);
+ if (i < 0)
+ {
+ warning (_ ("font index must be non-negative, using index 0"));
+ i = 0;
+ }
+ }
+
string file_name = ly_scm2string (ttf_file_name);
- if (be_verbose_global)
- progress_indication ("[" + file_name);
+ debug_output ("\n[" + file_name, false);
+
+ FT_Face face;
+
+ /* check whether font index is valid */
+ if (i > 0)
+ {
+ face = open_ft_face (file_name, -1);
+ if (i >= face->num_faces)
+ {
+ warning (_f ("font index %d too large for font `%s', using index 0",
+ i, file_name.c_str ()));
+ i = 0;
+ }
+ FT_Done_Face (face);
+ }
- FT_Face face = open_ft_face (file_name);
+ face = open_ft_face (file_name, i);
char const *ps_name_str0 = FT_Get_Postscript_Name (face);
- SCM ps_name = scm_makfrom0str (ps_name_str0 ? ps_name_str0 : "");
-
+ SCM ps_name = scm_from_locale_string (ps_name_str0 ? ps_name_str0 : "");
FT_Done_Face (face);
-
- if (be_verbose_global)
- progress_indication ("]");
-
- return ps_name;
-}
+ debug_output ("]", false);
+ return ps_name;
+}
-LY_DEFINE (ly_ttf_to_pfa, "ly:ttf->pfa",
- 1, 0, 0, (SCM ttf_file_name),
- "Convert the contents of a TTF file to Type42 PFA, returning it as "
- " a string.")
+LY_DEFINE (ly_ttf_2_pfa, "ly:ttf->pfa",
+ 1, 1, 0, (SCM ttf_file_name, SCM idx),
+ "Convert the contents of a TrueType font file to PostScript"
+ " Type@tie{}42 font, returning it as a string. The optional"
+ " @var{idx} argument is useful for TrueType collections (TTC)"
+ " only; it specifies the font index within the TTC. The default"
+ " value of @var{idx} is@tie{}0.")
{
- SCM_ASSERT_TYPE (scm_is_string (ttf_file_name), ttf_file_name,
- SCM_ARG1, __FUNCTION__, "string");
+ LY_ASSERT_TYPE (scm_is_string, ttf_file_name, 1);
+
+ int i = 0;
+ if (idx != SCM_UNDEFINED)
+ {
+ LY_ASSERT_TYPE (scm_is_integer, idx, 2);
+ i = scm_to_int (idx);
+ if (i < 0)
+ {
+ warning (_ ("font index must be non-negative, using index 0"));
+ i = 0;
+ }
+ }
string file_name = ly_scm2string (ttf_file_name);
- if (be_verbose_global)
- progress_indication ("[" + file_name);
+ debug_output ("[" + file_name); // Debug message should start on a new line
Memory_out_stream stream;
- create_type42_font (&stream, file_name);
+ create_type42_font (&stream, file_name, i);
SCM asscm = scm_from_locale_stringn (stream.get_string (),
- stream.get_length ());
+ stream.get_length ());
- if (be_verbose_global)
- progress_indication ("]");
+ debug_output ("]", false);
return asscm;
}
projects / lilypond.git / blobdiff