LCOV - code coverage report
Current view: top level - gfx/ots/src - maxp.cc (source / functions) Hit Total Coverage
Test: output.info Lines: 0 71 0.0 %
Date: 2017-07-14 16:53:18 Functions: 0 5 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : // Copyright (c) 2009 The Chromium Authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "maxp.h"
       6             : 
       7             : // maxp - Maximum Profile
       8             : // http://www.microsoft.com/typography/otspec/maxp.htm
       9             : 
      10             : #define TABLE_NAME "maxp"
      11             : 
      12             : namespace ots {
      13             : 
      14           0 : bool ots_maxp_parse(Font *font, const uint8_t *data, size_t length) {
      15           0 :   Buffer table(data, length);
      16             : 
      17           0 :   OpenTypeMAXP *maxp = new OpenTypeMAXP;
      18           0 :   font->maxp = maxp;
      19             : 
      20           0 :   uint32_t version = 0;
      21           0 :   if (!table.ReadU32(&version)) {
      22           0 :     return OTS_FAILURE_MSG("Failed to read version of maxp table");
      23             :   }
      24             : 
      25           0 :   if (version >> 16 > 1) {
      26           0 :     return OTS_FAILURE_MSG("Bad maxp version %d", version);
      27             :   }
      28             : 
      29           0 :   if (!table.ReadU16(&maxp->num_glyphs)) {
      30           0 :     return OTS_FAILURE_MSG("Failed to read number of glyphs from maxp table");
      31             :   }
      32             : 
      33           0 :   if (!maxp->num_glyphs) {
      34           0 :     return OTS_FAILURE_MSG("Bad number of glyphs 0 in maxp table");
      35             :   }
      36             : 
      37           0 :   if (version >> 16 == 1) {
      38           0 :     maxp->version_1 = true;
      39           0 :     if (!table.ReadU16(&maxp->max_points) ||
      40           0 :         !table.ReadU16(&maxp->max_contours) ||
      41           0 :         !table.ReadU16(&maxp->max_c_points) ||
      42           0 :         !table.ReadU16(&maxp->max_c_contours) ||
      43           0 :         !table.ReadU16(&maxp->max_zones) ||
      44           0 :         !table.ReadU16(&maxp->max_t_points) ||
      45           0 :         !table.ReadU16(&maxp->max_storage) ||
      46           0 :         !table.ReadU16(&maxp->max_fdefs) ||
      47           0 :         !table.ReadU16(&maxp->max_idefs) ||
      48           0 :         !table.ReadU16(&maxp->max_stack) ||
      49           0 :         !table.ReadU16(&maxp->max_size_glyf_instructions) ||
      50           0 :         !table.ReadU16(&maxp->max_c_components) ||
      51           0 :         !table.ReadU16(&maxp->max_c_depth)) {
      52           0 :       return OTS_FAILURE_MSG("Failed to read maxp table");
      53             :     }
      54             : 
      55           0 :     if (maxp->max_zones == 0) {
      56             :       // workaround for ipa*.ttf Japanese fonts.
      57           0 :       OTS_WARNING("bad max_zones: %u", maxp->max_zones);
      58           0 :       maxp->max_zones = 1;
      59           0 :     } else if (maxp->max_zones == 3) {
      60             :       // workaround for Ecolier-*.ttf fonts.
      61           0 :       OTS_WARNING("bad max_zones: %u", maxp->max_zones);
      62           0 :       maxp->max_zones = 2;
      63             :     }
      64             : 
      65           0 :     if ((maxp->max_zones != 1) && (maxp->max_zones != 2)) {
      66           0 :       return OTS_FAILURE_MSG("Bad max zones %d in maxp", maxp->max_zones);
      67             :     }
      68             :   } else {
      69           0 :     maxp->version_1 = false;
      70             :   }
      71             : 
      72           0 :   return true;
      73             : }
      74             : 
      75           0 : bool ots_maxp_should_serialise(Font *font) {
      76           0 :   return font->maxp != NULL;
      77             : }
      78             : 
      79           0 : bool ots_maxp_serialise(OTSStream *out, Font *font) {
      80           0 :   const OpenTypeMAXP *maxp = font->maxp;
      81             : 
      82           0 :   if (!out->WriteU32(maxp->version_1 ? 0x00010000 : 0x00005000) ||
      83           0 :       !out->WriteU16(maxp->num_glyphs)) {
      84           0 :     return OTS_FAILURE_MSG("Failed to write maxp version or number of glyphs");
      85             :   }
      86             : 
      87           0 :   if (!maxp->version_1) return true;
      88             : 
      89           0 :   if (!out->WriteU16(maxp->max_points) ||
      90           0 :       !out->WriteU16(maxp->max_contours) ||
      91           0 :       !out->WriteU16(maxp->max_c_points) ||
      92           0 :       !out->WriteU16(maxp->max_c_contours)) {
      93           0 :     return OTS_FAILURE_MSG("Failed to write maxp");
      94             :   }
      95             : 
      96           0 :   if (!out->WriteU16(maxp->max_zones) ||
      97           0 :       !out->WriteU16(maxp->max_t_points) ||
      98           0 :       !out->WriteU16(maxp->max_storage) ||
      99           0 :       !out->WriteU16(maxp->max_fdefs) ||
     100           0 :       !out->WriteU16(maxp->max_idefs) ||
     101           0 :       !out->WriteU16(maxp->max_stack) ||
     102           0 :       !out->WriteU16(maxp->max_size_glyf_instructions)) {
     103           0 :     return OTS_FAILURE_MSG("Failed to write more maxp");
     104             :   }
     105             : 
     106           0 :   if (!out->WriteU16(maxp->max_c_components) ||
     107           0 :       !out->WriteU16(maxp->max_c_depth)) {
     108           0 :     return OTS_FAILURE_MSG("Failed to write yet more maxp");
     109             :   }
     110             : 
     111           0 :   return true;
     112             : }
     113             : 
     114           0 : void ots_maxp_reuse(Font *font, Font *other) {
     115           0 :   font->maxp = other->maxp;
     116           0 :   font->maxp_reused = true;
     117           0 : }
     118             : 
     119           0 : void ots_maxp_free(Font *font) {
     120           0 :   delete font->maxp;
     121           0 : }
     122             : 
     123             : }  // namespace ots
     124             : 
     125             : #undef TABLE_NAME

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