X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fttf.cc;h=e46628ab0c183661964837d5e7f69c8d36d591d1;hb=9e781b7dc83b60a543ce218aa1a5f139f74c760f;hp=1cb6fdc83cb71f52a9310b08730a9b919ba77f41;hpb=afa98722d22b2cc4c98254ff05c9ee164cf98bae;p=lilypond.git diff --git a/lily/ttf.cc b/lily/ttf.cc index 1cb6fdc83c..e46628ab0c 100644 --- a/lily/ttf.cc +++ b/lily/ttf.cc @@ -1,22 +1,34 @@ /* - 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 - (c) 2005--2006 Han-Wen Nienhuys + 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 . */ +#include #include "freetype.hh" -#include +#include FT_TRUETYPE_TABLES_H +#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) { @@ -25,7 +37,7 @@ 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; @@ -36,7 +48,6 @@ make_index_to_charcode_map (FT_Face face) } FT_Set_Charmap (face, current_cmap); - return m; } @@ -56,7 +67,7 @@ print_header (void *out, FT_Face face) 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"); @@ -65,17 +76,16 @@ print_header (void *out, FT_Face face) 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]) @@ -99,54 +109,307 @@ print_header (void *out, FT_Face face) #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 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 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]; @@ -163,43 +426,40 @@ print_trailer (void *out, { 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"); @@ -207,62 +467,113 @@ print_trailer (void *out, } 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_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; }