diff options
| -rw-r--r-- | DEPS | 6 | ||||
| -rw-r--r-- | skia/config/SkUserConfig.h | 3 | ||||
| -rw-r--r-- | third_party/sfntly/sfntly.gyp | 228 | ||||
| -rw-r--r-- | third_party/sfntly/src/subsetter/font_subsetter.cc | 39 | ||||
| -rw-r--r-- | third_party/sfntly/src/subsetter/font_subsetter.h | 50 | ||||
| -rw-r--r-- | third_party/sfntly/src/subsetter/subsetter_impl.cc | 772 | ||||
| -rw-r--r-- | third_party/sfntly/src/subsetter/subsetter_impl.h | 72 |
7 files changed, 119 insertions, 1051 deletions
@@ -35,7 +35,7 @@ vars = { "libvpx_revision": "109236", "lss_revision": "9", "ffmpeg_revision": "112050", - "sfntly_revision": "117", + "sfntly_revision": "118", "skia_revision": "2850", # Three lines of non-changing comments so that # the commit queue can handle CLs rolling Skia @@ -121,8 +121,8 @@ deps = { Var("nacl_trunk") + "/src/native_client/tests/prebuilt@" + Var("nacl_revision"), - "src/third_party/sfntly/src/sfntly": - (Var("googlecode_url") % "sfntly") + "/trunk/cpp/src/sfntly@" + + "src/third_party/sfntly/cpp/src": + (Var("googlecode_url") % "sfntly") + "/trunk/cpp/src@" + Var("sfntly_revision"), "src/third_party/skia/src": diff --git a/skia/config/SkUserConfig.h b/skia/config/SkUserConfig.h index 506c473..dd8d852 100644 --- a/skia/config/SkUserConfig.h +++ b/skia/config/SkUserConfig.h @@ -132,7 +132,8 @@ /* Define this to provide font subsetter for font subsetting when generating PDF documents. */ -#define SK_SFNTLY_SUBSETTER "third_party/sfntly/src/subsetter/font_subsetter.h" +#define SK_SFNTLY_SUBSETTER \ + "third_party/sfntly/cpp/src/sample/chromium/font_subsetter.h" /* Define this to remove dimension checks on bitmaps. Not all blits will be correct yet, so this is mostly for debugging the implementation. diff --git a/third_party/sfntly/sfntly.gyp b/third_party/sfntly/sfntly.gyp index 7178f49..be15fa6 100644 --- a/third_party/sfntly/sfntly.gyp +++ b/third_party/sfntly/sfntly.gyp @@ -11,122 +11,122 @@ 'target_name': 'sfntly', 'type': 'static_library', 'sources': [ - 'src/sfntly/data/byte_array.cc', - 'src/sfntly/data/byte_array.h', - 'src/sfntly/data/font_data.cc', - 'src/sfntly/data/font_data.h', - 'src/sfntly/data/font_input_stream.cc', - 'src/sfntly/data/font_input_stream.h', - 'src/sfntly/data/font_output_stream.cc', - 'src/sfntly/data/font_output_stream.h', - 'src/sfntly/data/growable_memory_byte_array.cc', - 'src/sfntly/data/growable_memory_byte_array.h', - 'src/sfntly/data/memory_byte_array.cc', - 'src/sfntly/data/memory_byte_array.h', - 'src/sfntly/data/readable_font_data.cc', - 'src/sfntly/data/readable_font_data.h', - 'src/sfntly/data/writable_font_data.cc', - 'src/sfntly/data/writable_font_data.h', - 'src/sfntly/font.cc', - 'src/sfntly/font.h', - 'src/sfntly/font_factory.cc', - 'src/sfntly/font_factory.h', - 'src/sfntly/math/fixed1616.h', - 'src/sfntly/math/font_math.h', - 'src/sfntly/port/atomic.h', - 'src/sfntly/port/config.h', - 'src/sfntly/port/endian.h', - 'src/sfntly/port/exception_type.h', - 'src/sfntly/port/file_input_stream.cc', - 'src/sfntly/port/file_input_stream.h', - 'src/sfntly/port/input_stream.h', - 'src/sfntly/port/lock.cc', - 'src/sfntly/port/lock.h', - 'src/sfntly/port/memory_input_stream.cc', - 'src/sfntly/port/memory_input_stream.h', - 'src/sfntly/port/memory_output_stream.cc', - 'src/sfntly/port/memory_output_stream.h', - 'src/sfntly/port/output_stream.h', - 'src/sfntly/port/refcount.h', - 'src/sfntly/port/type.h', - 'src/sfntly/table/bitmap/big_glyph_metrics.cc', - 'src/sfntly/table/bitmap/big_glyph_metrics.h', - 'src/sfntly/table/bitmap/bitmap_glyph.cc', - 'src/sfntly/table/bitmap/bitmap_glyph.h', - 'src/sfntly/table/bitmap/bitmap_glyph_info.cc', - 'src/sfntly/table/bitmap/bitmap_glyph_info.h', - 'src/sfntly/table/bitmap/bitmap_size_table.cc', - 'src/sfntly/table/bitmap/bitmap_size_table.h', - 'src/sfntly/table/bitmap/composite_bitmap_glyph.cc', - 'src/sfntly/table/bitmap/composite_bitmap_glyph.h', - 'src/sfntly/table/bitmap/ebdt_table.cc', - 'src/sfntly/table/bitmap/ebdt_table.h', - 'src/sfntly/table/bitmap/eblc_table.cc', - 'src/sfntly/table/bitmap/eblc_table.h', - 'src/sfntly/table/bitmap/ebsc_table.cc', - 'src/sfntly/table/bitmap/ebsc_table.h', - 'src/sfntly/table/bitmap/glyph_metrics.cc', - 'src/sfntly/table/bitmap/glyph_metrics.h', - 'src/sfntly/table/bitmap/index_sub_table.cc', - 'src/sfntly/table/bitmap/index_sub_table.h', - 'src/sfntly/table/bitmap/index_sub_table_format1.cc', - 'src/sfntly/table/bitmap/index_sub_table_format1.h', - 'src/sfntly/table/bitmap/index_sub_table_format2.cc', - 'src/sfntly/table/bitmap/index_sub_table_format2.h', - 'src/sfntly/table/bitmap/index_sub_table_format3.cc', - 'src/sfntly/table/bitmap/index_sub_table_format3.h', - 'src/sfntly/table/bitmap/index_sub_table_format4.cc', - 'src/sfntly/table/bitmap/index_sub_table_format4.h', - 'src/sfntly/table/bitmap/index_sub_table_format5.cc', - 'src/sfntly/table/bitmap/index_sub_table_format5.h', - 'src/sfntly/table/bitmap/simple_bitmap_glyph.cc', - 'src/sfntly/table/bitmap/simple_bitmap_glyph.h', - 'src/sfntly/table/bitmap/small_glyph_metrics.cc', - 'src/sfntly/table/bitmap/small_glyph_metrics.h', - 'src/sfntly/table/byte_array_table_builder.cc', - 'src/sfntly/table/byte_array_table_builder.h', - 'src/sfntly/table/core/cmap_table.cc', - 'src/sfntly/table/core/cmap_table.h', - 'src/sfntly/table/core/font_header_table.cc', - 'src/sfntly/table/core/font_header_table.h', - 'src/sfntly/table/core/horizontal_device_metrics_table.cc', - 'src/sfntly/table/core/horizontal_device_metrics_table.h', - 'src/sfntly/table/core/horizontal_header_table.cc', - 'src/sfntly/table/core/horizontal_header_table.h', - 'src/sfntly/table/core/horizontal_metrics_table.cc', - 'src/sfntly/table/core/horizontal_metrics_table.h', - 'src/sfntly/table/core/maximum_profile_table.cc', - 'src/sfntly/table/core/maximum_profile_table.h', - 'src/sfntly/table/core/name_table.cc', - 'src/sfntly/table/core/name_table.h', - 'src/sfntly/table/core/os2_table.cc', - 'src/sfntly/table/core/os2_table.h', - 'src/sfntly/table/font_data_table.cc', - 'src/sfntly/table/font_data_table.h', - 'src/sfntly/table/generic_table_builder.cc', - 'src/sfntly/table/generic_table_builder.h', - 'src/sfntly/table/header.cc', - 'src/sfntly/table/header.h', - 'src/sfntly/table/subtable.cc', - 'src/sfntly/table/subtable.h', - 'src/sfntly/table/subtable_container_table.h', - 'src/sfntly/table/table.cc', - 'src/sfntly/table/table.h', - 'src/sfntly/table/table_based_table_builder.cc', - 'src/sfntly/table/table_based_table_builder.h', - 'src/sfntly/table/truetype/glyph_table.cc', - 'src/sfntly/table/truetype/glyph_table.h', - 'src/sfntly/table/truetype/loca_table.cc', - 'src/sfntly/table/truetype/loca_table.h', - 'src/sfntly/tag.cc', - 'src/sfntly/tag.h', - 'src/subsetter/font_subsetter.cc', - 'src/subsetter/font_subsetter.h', - 'src/subsetter/subsetter_impl.cc', - 'src/subsetter/subsetter_impl.h', + 'cpp/src/sfntly/data/byte_array.cc', + 'cpp/src/sfntly/data/byte_array.h', + 'cpp/src/sfntly/data/font_data.cc', + 'cpp/src/sfntly/data/font_data.h', + 'cpp/src/sfntly/data/font_input_stream.cc', + 'cpp/src/sfntly/data/font_input_stream.h', + 'cpp/src/sfntly/data/font_output_stream.cc', + 'cpp/src/sfntly/data/font_output_stream.h', + 'cpp/src/sfntly/data/growable_memory_byte_array.cc', + 'cpp/src/sfntly/data/growable_memory_byte_array.h', + 'cpp/src/sfntly/data/memory_byte_array.cc', + 'cpp/src/sfntly/data/memory_byte_array.h', + 'cpp/src/sfntly/data/readable_font_data.cc', + 'cpp/src/sfntly/data/readable_font_data.h', + 'cpp/src/sfntly/data/writable_font_data.cc', + 'cpp/src/sfntly/data/writable_font_data.h', + 'cpp/src/sfntly/font.cc', + 'cpp/src/sfntly/font.h', + 'cpp/src/sfntly/font_factory.cc', + 'cpp/src/sfntly/font_factory.h', + 'cpp/src/sfntly/math/fixed1616.h', + 'cpp/src/sfntly/math/font_math.h', + 'cpp/src/sfntly/port/atomic.h', + 'cpp/src/sfntly/port/config.h', + 'cpp/src/sfntly/port/endian.h', + 'cpp/src/sfntly/port/exception_type.h', + 'cpp/src/sfntly/port/file_input_stream.cc', + 'cpp/src/sfntly/port/file_input_stream.h', + 'cpp/src/sfntly/port/input_stream.h', + 'cpp/src/sfntly/port/lock.cc', + 'cpp/src/sfntly/port/lock.h', + 'cpp/src/sfntly/port/memory_input_stream.cc', + 'cpp/src/sfntly/port/memory_input_stream.h', + 'cpp/src/sfntly/port/memory_output_stream.cc', + 'cpp/src/sfntly/port/memory_output_stream.h', + 'cpp/src/sfntly/port/output_stream.h', + 'cpp/src/sfntly/port/refcount.h', + 'cpp/src/sfntly/port/type.h', + 'cpp/src/sfntly/table/bitmap/big_glyph_metrics.cc', + 'cpp/src/sfntly/table/bitmap/big_glyph_metrics.h', + 'cpp/src/sfntly/table/bitmap/bitmap_glyph.cc', + 'cpp/src/sfntly/table/bitmap/bitmap_glyph.h', + 'cpp/src/sfntly/table/bitmap/bitmap_glyph_info.cc', + 'cpp/src/sfntly/table/bitmap/bitmap_glyph_info.h', + 'cpp/src/sfntly/table/bitmap/bitmap_size_table.cc', + 'cpp/src/sfntly/table/bitmap/bitmap_size_table.h', + 'cpp/src/sfntly/table/bitmap/composite_bitmap_glyph.cc', + 'cpp/src/sfntly/table/bitmap/composite_bitmap_glyph.h', + 'cpp/src/sfntly/table/bitmap/ebdt_table.cc', + 'cpp/src/sfntly/table/bitmap/ebdt_table.h', + 'cpp/src/sfntly/table/bitmap/eblc_table.cc', + 'cpp/src/sfntly/table/bitmap/eblc_table.h', + 'cpp/src/sfntly/table/bitmap/ebsc_table.cc', + 'cpp/src/sfntly/table/bitmap/ebsc_table.h', + 'cpp/src/sfntly/table/bitmap/glyph_metrics.cc', + 'cpp/src/sfntly/table/bitmap/glyph_metrics.h', + 'cpp/src/sfntly/table/bitmap/index_sub_table.cc', + 'cpp/src/sfntly/table/bitmap/index_sub_table.h', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format1.cc', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format1.h', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format2.cc', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format2.h', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format3.cc', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format3.h', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format4.cc', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format4.h', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format5.cc', + 'cpp/src/sfntly/table/bitmap/index_sub_table_format5.h', + 'cpp/src/sfntly/table/bitmap/simple_bitmap_glyph.cc', + 'cpp/src/sfntly/table/bitmap/simple_bitmap_glyph.h', + 'cpp/src/sfntly/table/bitmap/small_glyph_metrics.cc', + 'cpp/src/sfntly/table/bitmap/small_glyph_metrics.h', + 'cpp/src/sfntly/table/byte_array_table_builder.cc', + 'cpp/src/sfntly/table/byte_array_table_builder.h', + 'cpp/src/sfntly/table/core/cmap_table.cc', + 'cpp/src/sfntly/table/core/cmap_table.h', + 'cpp/src/sfntly/table/core/font_header_table.cc', + 'cpp/src/sfntly/table/core/font_header_table.h', + 'cpp/src/sfntly/table/core/horizontal_device_metrics_table.cc', + 'cpp/src/sfntly/table/core/horizontal_device_metrics_table.h', + 'cpp/src/sfntly/table/core/horizontal_header_table.cc', + 'cpp/src/sfntly/table/core/horizontal_header_table.h', + 'cpp/src/sfntly/table/core/horizontal_metrics_table.cc', + 'cpp/src/sfntly/table/core/horizontal_metrics_table.h', + 'cpp/src/sfntly/table/core/maximum_profile_table.cc', + 'cpp/src/sfntly/table/core/maximum_profile_table.h', + 'cpp/src/sfntly/table/core/name_table.cc', + 'cpp/src/sfntly/table/core/name_table.h', + 'cpp/src/sfntly/table/core/os2_table.cc', + 'cpp/src/sfntly/table/core/os2_table.h', + 'cpp/src/sfntly/table/font_data_table.cc', + 'cpp/src/sfntly/table/font_data_table.h', + 'cpp/src/sfntly/table/generic_table_builder.cc', + 'cpp/src/sfntly/table/generic_table_builder.h', + 'cpp/src/sfntly/table/header.cc', + 'cpp/src/sfntly/table/header.h', + 'cpp/src/sfntly/table/subtable.cc', + 'cpp/src/sfntly/table/subtable.h', + 'cpp/src/sfntly/table/subtable_container_table.h', + 'cpp/src/sfntly/table/table.cc', + 'cpp/src/sfntly/table/table.h', + 'cpp/src/sfntly/table/table_based_table_builder.cc', + 'cpp/src/sfntly/table/table_based_table_builder.h', + 'cpp/src/sfntly/table/truetype/glyph_table.cc', + 'cpp/src/sfntly/table/truetype/glyph_table.h', + 'cpp/src/sfntly/table/truetype/loca_table.cc', + 'cpp/src/sfntly/table/truetype/loca_table.h', + 'cpp/src/sfntly/tag.cc', + 'cpp/src/sfntly/tag.h', + 'cpp/src/sample/chromium/font_subsetter.cc', + 'cpp/src/sample/chromium/font_subsetter.h', + 'cpp/src/sample/chromium/subsetter_impl.cc', + 'cpp/src/sample/chromium/subsetter_impl.h', ], 'include_dirs': [ - 'src', '../..', + 'cpp/src', '../..', ], # This macro must be define to suppress the use of exception 'defines': [ diff --git a/third_party/sfntly/src/subsetter/font_subsetter.cc b/third_party/sfntly/src/subsetter/font_subsetter.cc deleted file mode 100644 index c045790..0000000 --- a/third_party/sfntly/src/subsetter/font_subsetter.cc +++ /dev/null @@ -1,39 +0,0 @@ -/* - * Copyright 2011 Google Inc. All Rights Reserved. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "third_party/sfntly/src/subsetter/font_subsetter.h" - -#include "third_party/sfntly/src/subsetter/subsetter_impl.h" - -int SfntlyWrapper::SubsetFont(const char* font_name, - const unsigned char* original_font, - size_t font_size, - const unsigned int* glyph_ids, - size_t glyph_count, - unsigned char** output_buffer) { - if (output_buffer == NULL || - original_font == NULL || font_size == 0 || - glyph_ids == NULL || glyph_count == 0) { - return 0; - } - - sfntly::SubsetterImpl subsetter; - if (!subsetter.LoadFont(font_name, original_font, font_size)) { - return -1; // Load error or font not found. - } - - return subsetter.SubsetFont(glyph_ids, glyph_count, output_buffer); -} diff --git a/third_party/sfntly/src/subsetter/font_subsetter.h b/third_party/sfntly/src/subsetter/font_subsetter.h deleted file mode 100644 index 9055cd3..0000000 --- a/third_party/sfntly/src/subsetter/font_subsetter.h +++ /dev/null @@ -1,50 +0,0 @@ -/* - * Copyright 2011 Google Inc. All Rights Reserved. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef THIRD_PARTY_SFNTLY_SRC_SUBSETTER_FONT_SUBSETTER_H_ -#define THIRD_PARTY_SFNTLY_SRC_SUBSETTER_FONT_SUBSETTER_H_ - -#include <cstddef> - -class SfntlyWrapper { - public: - - // Font subsetting API - // - // Input TTF/TTC/OTF fonts, specify the glyph IDs to subset, and the subset - // font is returned in |output_buffer| (caller to delete[]). Return value is - // the length of output_buffer allocated. - // - // If subsetting fails, a negative value is returned. If none of the glyph - // IDs specified is found, the function will return 0. - // - // |font_name| Font name, required for TTC files. If specified NULL, - // the first available font is selected. - // |original_font| Original font file contents. - // |font_size| Size of |original_font| in bytes. - // |glyph_ids| Glyph IDs to subset. If the specified glyph ID is not - // found in the font file, it will be ignored silently. - // |glyph_count| Number of glyph IDs in |glyph_ids| - // |output_buffer| Generated subset font. Caller to delete[]. - static int SubsetFont(const char* font_name, - const unsigned char* original_font, - size_t font_size, - const unsigned int* glyph_ids, - size_t glyph_count, - unsigned char** output_buffer); -}; - -#endif // THIRD_PARTY_SFNTLY_SRC_SUBSETTER_FONT_SUBSETTER_H_ diff --git a/third_party/sfntly/src/subsetter/subsetter_impl.cc b/third_party/sfntly/src/subsetter/subsetter_impl.cc deleted file mode 100644 index f317f98..0000000 --- a/third_party/sfntly/src/subsetter/subsetter_impl.cc +++ /dev/null @@ -1,772 +0,0 @@ -/* - * Copyright 2011 Google Inc. All Rights Reserved. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "third_party/sfntly/src/subsetter/subsetter_impl.h" - -#include <string.h> - -#include <algorithm> -#include <iterator> -#include <map> -#include <set> - -#include "third_party/sfntly/src/sfntly/table/bitmap/eblc_table.h" -#include "third_party/sfntly/src/sfntly/table/bitmap/ebdt_table.h" -#include "third_party/sfntly/src/sfntly/table/bitmap/index_sub_table.h" -#include "third_party/sfntly/src/sfntly/table/bitmap/index_sub_table_format1.h" -#include "third_party/sfntly/src/sfntly/table/bitmap/index_sub_table_format2.h" -#include "third_party/sfntly/src/sfntly/table/bitmap/index_sub_table_format3.h" -#include "third_party/sfntly/src/sfntly/table/bitmap/index_sub_table_format4.h" -#include "third_party/sfntly/src/sfntly/table/bitmap/index_sub_table_format5.h" -#include "third_party/sfntly/src/sfntly/table/core/name_table.h" -#include "third_party/sfntly/src/sfntly/tag.h" -#include "third_party/sfntly/src/sfntly/data/memory_byte_array.h" -#include "third_party/sfntly/src/sfntly/port/memory_input_stream.h" -#include "third_party/sfntly/src/sfntly/port/memory_output_stream.h" - -#if defined U_USING_ICU_NAMESPACE - U_NAMESPACE_USE -#endif - -namespace { - -using namespace sfntly; - -// The bitmap tables must be greater than 16KB to trigger bitmap subsetter. -static const int BITMAP_SIZE_THRESHOLD = 16384; - -void ConstructName(UChar* name_part, UnicodeString* name, int32_t name_id) { - switch (name_id) { - case NameId::kFullFontName: - *name = name_part; - break; - case NameId::kFontFamilyName: - case NameId::kPreferredFamily: - case NameId::kWWSFamilyName: { - UnicodeString original = *name; - *name = name_part; - *name += original; - break; - } - case NameId::kFontSubfamilyName: - case NameId::kPreferredSubfamily: - case NameId::kWWSSubfamilyName: - *name += name_part; - break; - default: - // This name part is not used to construct font name (e.g. copyright). - // Simply ignore it. - break; - } -} - -int32_t HashCode(int32_t platform_id, int32_t encoding_id, int32_t language_id, - int32_t name_id) { - int32_t result = platform_id << 24 | encoding_id << 16 | language_id << 8; - if (name_id == NameId::kFullFontName) { - result |= 0xff; - } else if (name_id == NameId::kPreferredFamily || - name_id == NameId::kPreferredSubfamily) { - result |= 0xf; - } else if (name_id == NameId::kWWSFamilyName || - name_id == NameId::kWWSSubfamilyName) { - result |= 1; - } - return result; -} - -bool HasName(const char* font_name, Font* font) { - UnicodeString font_string = UnicodeString::fromUTF8(font_name); - if (font_string.isEmpty()) - return false; - UnicodeString regular_suffix = UnicodeString::fromUTF8(" Regular"); - UnicodeString alt_font_string = font_string; - alt_font_string += regular_suffix; - - typedef std::map<int32_t, UnicodeString> NameMap; - NameMap names; - NameTablePtr name_table = down_cast<NameTable*>(font->GetTable(Tag::name)); - if (name_table == NULL) { - return false; - } - - for (int32_t i = 0; i < name_table->NameCount(); ++i) { - switch (name_table->NameId(i)) { - case NameId::kFontFamilyName: - case NameId::kFontSubfamilyName: - case NameId::kFullFontName: - case NameId::kPreferredFamily: - case NameId::kPreferredSubfamily: - case NameId::kWWSFamilyName: - case NameId::kWWSSubfamilyName: { - int32_t hash_code = HashCode(name_table->PlatformId(i), - name_table->EncodingId(i), - name_table->LanguageId(i), - name_table->NameId(i)); - UChar* name_part = name_table->Name(i); - ConstructName(name_part, &(names[hash_code]), name_table->NameId(i)); - delete[] name_part; - break; - } - default: - break; - } - } - - if (!names.empty()) { - for (NameMap::iterator i = names.begin(), e = names.end(); i != e; ++i) { - if (i->second.caseCompare(font_string, 0) == 0 || - i->second.caseCompare(alt_font_string, 0) == 0) { - return true; - } - } - } - return false; -} - -Font* FindFont(const char* font_name, const FontArray& font_array) { - if (font_array.empty() || font_array[0] == NULL) { - return NULL; - } - - if (font_name && strlen(font_name)) { - for (FontArray::const_iterator i = font_array.begin(), e = font_array.end(); - i != e; ++i) { - if (HasName(font_name, i->p_)) { - return i->p_; - } - } - } - - return font_array[0].p_; -} - -bool ResolveCompositeGlyphs(GlyphTable* glyph_table, - LocaTable* loca_table, - const unsigned int* glyph_ids, - size_t glyph_count, - IntegerSet* glyph_id_processed) { - if (glyph_table == NULL || loca_table == NULL || - glyph_ids == NULL || glyph_count == 0 || glyph_id_processed == NULL) { - return false; - } - - // Sort and uniquify glyph ids. - IntegerSet glyph_id_remaining; - glyph_id_remaining.insert(0); // Always include glyph id 0. - for (size_t i = 0; i < glyph_count; ++i) { - glyph_id_remaining.insert(glyph_ids[i]); - } - - // Identify if any given glyph id maps to a composite glyph. If so, include - // the glyphs referenced by that composite glyph. - while (!glyph_id_remaining.empty()) { - IntegerSet comp_glyph_id; - for (IntegerSet::iterator i = glyph_id_remaining.begin(), - e = glyph_id_remaining.end(); i != e; ++i) { - if (*i < 0 || *i >= loca_table->num_glyphs()) { - // Invalid glyph id, ignore. - continue; - } - - int32_t length = loca_table->GlyphLength(*i); - if (length == 0) { - // Empty glyph, ignore. - continue; - } - int32_t offset = loca_table->GlyphOffset(*i); - - GlyphPtr glyph; - glyph.Attach(glyph_table->GetGlyph(offset, length)); - if (glyph == NULL) { - // Error finding glyph, ignore. - continue; - } - - if (glyph->GlyphType() == GlyphType::kComposite) { - Ptr<GlyphTable::CompositeGlyph> comp_glyph = - down_cast<GlyphTable::CompositeGlyph*>(glyph.p_); - for (int32_t j = 0; j < comp_glyph->NumGlyphs(); ++j) { - int32_t glyph_id = comp_glyph->GlyphIndex(j); - if (glyph_id_processed->find(glyph_id) == glyph_id_processed->end() && - glyph_id_remaining.find(glyph_id) == glyph_id_remaining.end()) { - comp_glyph_id.insert(comp_glyph->GlyphIndex(j)); - } - } - } - - glyph_id_processed->insert(*i); - } - - glyph_id_remaining.clear(); - glyph_id_remaining = comp_glyph_id; - } - - return true; -} - -bool SetupGlyfBuilders(Font::Builder* font_builder, - GlyphTable* glyph_table, - LocaTable* loca_table, - const IntegerSet& glyph_ids) { - if (!font_builder || !glyph_table || !loca_table) { - return false; - } - - GlyphTableBuilderPtr glyph_table_builder = - down_cast<GlyphTable::Builder*>(font_builder->NewTableBuilder(Tag::glyf)); - LocaTableBuilderPtr loca_table_builder = - down_cast<LocaTable::Builder*>(font_builder->NewTableBuilder(Tag::loca)); - if (glyph_table_builder == NULL || loca_table_builder == NULL) { - // Out of memory. - return false; - } - - // Extract glyphs and setup loca list. - IntegerList loca_list; - loca_list.resize(loca_table->num_glyphs()); - loca_list.push_back(0); - int32_t last_glyph_id = 0; - int32_t last_offset = 0; - GlyphTable::GlyphBuilderList* glyph_builders = - glyph_table_builder->GlyphBuilders(); - for (IntegerSet::const_iterator i = glyph_ids.begin(), e = glyph_ids.end(); - i != e; ++i) { - int32_t length = loca_table->GlyphLength(*i); - int32_t offset = loca_table->GlyphOffset(*i); - - GlyphPtr glyph; - glyph.Attach(glyph_table->GetGlyph(offset, length)); - - // Add glyph to new glyf table. - ReadableFontDataPtr data = glyph->ReadFontData(); - WritableFontDataPtr copy_data; - copy_data.Attach(WritableFontData::CreateWritableFontData(data->Length())); - data->CopyTo(copy_data); - GlyphBuilderPtr glyph_builder; - glyph_builder.Attach(glyph_table_builder->GlyphBuilder(copy_data)); - glyph_builders->push_back(glyph_builder); - - // Configure loca list. - for (int32_t j = last_glyph_id + 1; j <= *i; ++j) { - loca_list[j] = last_offset; - } - last_offset += length; - loca_list[*i + 1] = last_offset; - last_glyph_id = *i; - } - for (int32_t j = last_glyph_id + 1; j <= loca_table->num_glyphs(); ++j) { - loca_list[j] = last_offset; - } - loca_table_builder->SetLocaList(&loca_list); - - return true; -} - -bool HasOverlap(int32_t range_begin, int32_t range_end, - const IntegerSet& glyph_ids) { - if (range_begin == range_end) { - return glyph_ids.find(range_begin) != glyph_ids.end(); - } else if (range_end > range_begin) { - IntegerSet::const_iterator left = glyph_ids.lower_bound(range_begin); - IntegerSet::const_iterator right = glyph_ids.lower_bound(range_end); - return right != left; - } - return false; -} - -// Initialize builder, returns false if glyph_id subset is not covered. -// Not thread-safe, caller to ensure object life-time. -bool InitializeBitmapBuilder(EbdtTable::Builder* ebdt, EblcTable::Builder* eblc, - const IntegerSet& glyph_ids) { - BitmapLocaList loca_list; - BitmapSizeTableBuilderList* strikes = eblc->BitmapSizeBuilders(); - - // Note: Do not call eblc_builder->GenerateLocaList(&loca_list) and then - // ebdt_builder->SetLoca(loca_list). For fonts like SimSun, there are - // >28K glyphs inside, where a typical usage will be <1K glyphs. Doing - // the calls improperly will result in creation of >100K objects that - // will be destroyed immediately, inducing significant slowness. - IntegerList removed_strikes; - for (size_t i = 0; i < strikes->size(); i++) { - if (!HasOverlap((*strikes)[i]->StartGlyphIndex(), - (*strikes)[i]->EndGlyphIndex(), glyph_ids)) { - removed_strikes.push_back(i); - continue; - } - - IndexSubTableBuilderList* index_builders = - (*strikes)[i]->IndexSubTableBuilders(); - IntegerList removed_indexes; - BitmapGlyphInfoMap info_map; - for (size_t j = 0; j < index_builders->size(); ++j) { - int32_t first_glyph_id = (*index_builders)[j]->first_glyph_index(); - int32_t last_glyph_id = (*index_builders)[j]->last_glyph_index(); - if (!HasOverlap(first_glyph_id, last_glyph_id, glyph_ids)) { - removed_indexes.push_back(j); - continue; - } - for (IntegerSet::const_iterator gid = glyph_ids.begin(), - gid_end = glyph_ids.end(); - gid != gid_end; gid++) { - if (*gid < first_glyph_id) { - continue; - } - if (*gid > last_glyph_id) { - break; - } - BitmapGlyphInfoPtr info; - info.Attach((*index_builders)[j]->GlyphInfo(*gid)); - if (info && info->length()) { // Do not include gid without bitmap - info_map[*gid] = info; - } - } - } - if (!info_map.empty()) { - loca_list.push_back(info_map); - } else { - removed_strikes.push_back(i); // Detected null entries. - } - - // Remove unused index sub tables - for (IntegerList::reverse_iterator j = removed_indexes.rbegin(), - e = removed_indexes.rend(); - j != e; j++) { - index_builders->erase(index_builders->begin() + *j); - } - } - if (removed_strikes.size() == strikes->size() || loca_list.empty()) { - return false; - } - - for (IntegerList::reverse_iterator i = removed_strikes.rbegin(), - e = removed_strikes.rend(); i != e; i++) { - strikes->erase(strikes->begin() + *i); - } - - if (strikes->empty()) { // no glyph covered, can safely drop the builders. - return false; - } - - ebdt->SetLoca(&loca_list); - ebdt->GlyphBuilders(); // Initialize the builder. - return true; -} - -void CopyBigGlyphMetrics(BigGlyphMetrics::Builder* source, - BigGlyphMetrics::Builder* target) { - target->SetHeight(static_cast<byte_t>(source->Height())); - target->SetWidth(static_cast<byte_t>(source->Width())); - target->SetHoriBearingX(static_cast<byte_t>(source->HoriBearingX())); - target->SetHoriBearingY(static_cast<byte_t>(source->HoriBearingY())); - target->SetHoriAdvance(static_cast<byte_t>(source->HoriAdvance())); - target->SetVertBearingX(static_cast<byte_t>(source->VertBearingX())); - target->SetVertBearingY(static_cast<byte_t>(source->VertBearingY())); - target->SetVertAdvance(static_cast<byte_t>(source->VertAdvance())); -} - -CALLER_ATTACH IndexSubTable::Builder* -ConstructIndexFormat4(IndexSubTable::Builder* b, const BitmapGlyphInfoMap& loca, - int32_t* image_data_offset) { - IndexSubTableFormat4BuilderPtr builder4; - builder4.Attach(IndexSubTableFormat4::Builder::CreateBuilder()); - CodeOffsetPairBuilderList offset_pairs; - - size_t offset = 0; - int32_t lower_bound = b->first_glyph_index(); - int32_t upper_bound = b->last_glyph_index(); - int32_t last_gid = -1; - BitmapGlyphInfoMap::const_iterator i = loca.lower_bound(lower_bound); - BitmapGlyphInfoMap::const_iterator end = loca.end(); - if (i != end) { - last_gid = i->first; - builder4->set_first_glyph_index(last_gid); - builder4->set_image_format(b->image_format()); - builder4->set_image_data_offset(*image_data_offset); - } - for (; i != end; i++) { - int32_t gid = i->first; - if (gid > upper_bound) { - break; - } - offset_pairs.push_back( - IndexSubTableFormat4::CodeOffsetPairBuilder(gid, offset)); - offset += i->second->length(); - last_gid = gid; - } - offset_pairs.push_back( - IndexSubTableFormat4::CodeOffsetPairBuilder(-1, offset)); - builder4->set_last_glyph_index(last_gid); - *image_data_offset += offset; - builder4->SetOffsetArray(offset_pairs); - - return builder4.Detach(); -} - -CALLER_ATTACH IndexSubTable::Builder* -ConstructIndexFormat5(IndexSubTable::Builder* b, const BitmapGlyphInfoMap& loca, - int32_t* image_data_offset) { - IndexSubTableFormat5BuilderPtr new_builder; - new_builder.Attach(IndexSubTableFormat5::Builder::CreateBuilder()); - - // Copy BigMetrics - int32_t image_size = 0; - if (b->index_format() == IndexSubTable::Format::FORMAT_2) { - IndexSubTableFormat2BuilderPtr builder2 = - down_cast<IndexSubTableFormat2::Builder*>(b); - CopyBigGlyphMetrics(builder2->BigMetrics(), new_builder->BigMetrics()); - image_size = builder2->ImageSize(); - } else { - IndexSubTableFormat5BuilderPtr builder5 = - down_cast<IndexSubTableFormat5::Builder*>(b); - BigGlyphMetricsBuilderPtr metrics_builder; - CopyBigGlyphMetrics(builder5->BigMetrics(), new_builder->BigMetrics()); - image_size = builder5->ImageSize(); - } - - IntegerList* glyph_array = new_builder->GlyphArray(); - size_t offset = 0; - int32_t lower_bound = b->first_glyph_index(); - int32_t upper_bound = b->last_glyph_index(); - int32_t last_gid = -1; - BitmapGlyphInfoMap::const_iterator i = loca.lower_bound(lower_bound); - BitmapGlyphInfoMap::const_iterator end = loca.end(); - if (i != end) { - last_gid = i->first; - new_builder->set_first_glyph_index(last_gid); - new_builder->set_image_format(b->image_format()); - new_builder->set_image_data_offset(*image_data_offset); - new_builder->SetImageSize(image_size); - } - for (; i != end; i++) { - int32_t gid = i->first; - if (gid > upper_bound) { - break; - } - glyph_array->push_back(gid); - offset += i->second->length(); - last_gid = gid; - } - new_builder->set_last_glyph_index(last_gid); - *image_data_offset += offset; - return new_builder.Detach(); -} - -CALLER_ATTACH IndexSubTable::Builder* -SubsetIndexSubTable(IndexSubTable::Builder* builder, - const BitmapGlyphInfoMap& loca, - int32_t* image_data_offset) { - switch (builder->index_format()) { - case IndexSubTable::Format::FORMAT_1: - case IndexSubTable::Format::FORMAT_3: - case IndexSubTable::Format::FORMAT_4: - return ConstructIndexFormat4(builder, loca, image_data_offset); - case IndexSubTable::Format::FORMAT_2: - case IndexSubTable::Format::FORMAT_5: - return ConstructIndexFormat5(builder, loca, image_data_offset); - default: - assert(false); - break; - } - return NULL; -} - -} - -namespace sfntly { - -// Not thread-safe, caller to ensure object life-time. -void SubsetEBLC(EblcTable::Builder* eblc, const BitmapLocaList& new_loca) { - BitmapSizeTableBuilderList* size_builders = eblc->BitmapSizeBuilders(); - if (size_builders == NULL) { - return; - } - - int32_t image_data_offset = EbdtTable::Offset::kHeaderLength; - for (size_t strike = 0; strike < size_builders->size(); ++strike) { - IndexSubTableBuilderList* index_builders = - (*size_builders)[strike]->IndexSubTableBuilders(); - for (size_t index = 0; index < index_builders->size(); ++index) { - IndexSubTable::Builder* new_builder_raw = - SubsetIndexSubTable((*index_builders)[index], new_loca[strike], - &image_data_offset); - if (NULL != new_builder_raw) { - (*index_builders)[index].Attach(new_builder_raw); - } - } - } -} - -// EBLC structure (from stuartg) -// header -// bitmapSizeTable[] -// one per strike -// holds strike metrics - sbitLineMetrics -// holds info about indexSubTableArray -// indexSubTableArray[][] -// one per strike and then one per indexSubTable for that strike -// holds info about the indexSubTable -// the indexSubTable entries pointed to can be of different formats -// indexSubTable -// one per indexSubTableArray entry -// tells how to get the glyphs -// may hold the glyph metrics if they are uniform for all the glyphs in range -// -// There is nothing that says that the indexSubTableArray entries and/or the -// indexSubTable items need to be unique. They may be shared between strikes. -// -// EBDT structure: -// header -// glyphs -// amorphous blob of data -// different glyphs that are only able to be figured out from the EBLC table -// may hold metrics - depends on the EBLC entry that pointed to them - -// Subsetting EBLC table (from arthurhsu) -// Most pages use only a fraction (hundreds or less) glyphs out of a given font -// (which can have >20K glyphs for CJK). It's safe to assume that the subset -// font will have sparse bitmap glyphs. So we reconstruct the EBLC table as -// format 4 or 5 here. - -enum BuildersToRemove { - kRemoveNone, - kRemoveBDAT, - kRemoveBDATAndEBDT -}; - -int SetupBitmapBuilders(Font* font, Font::Builder* font_builder, - const IntegerSet& glyph_ids) { - if (!font || !font_builder) { - return false; - } - - // Check if bitmap table exists. - EbdtTablePtr ebdt_table = down_cast<EbdtTable*>(font->GetTable(Tag::EBDT)); - EblcTablePtr eblc_table = down_cast<EblcTable*>(font->GetTable(Tag::EBLC)); - bool use_ebdt = (ebdt_table != NULL && eblc_table != NULL); - if (!use_ebdt) { - ebdt_table = down_cast<EbdtTable*>(font->GetTable(Tag::bdat)); - eblc_table = down_cast<EblcTable*>(font->GetTable(Tag::bloc)); - if (ebdt_table == NULL || eblc_table == NULL) { - return kRemoveNone; - } - } - - // If the bitmap table's size is too small, skip subsetting. - if (ebdt_table->DataLength() + eblc_table->DataLength() < - BITMAP_SIZE_THRESHOLD) { - return use_ebdt ? kRemoveBDAT : kRemoveNone; - } - - // Get the builders. - EbdtTableBuilderPtr ebdt_table_builder = down_cast<EbdtTable::Builder*>( - font_builder->NewTableBuilder(use_ebdt ? Tag::EBDT : Tag::bdat, - ebdt_table->ReadFontData())); - EblcTableBuilderPtr eblc_table_builder = down_cast<EblcTable::Builder*>( - font_builder->NewTableBuilder(use_ebdt ? Tag::EBLC : Tag::bloc, - eblc_table->ReadFontData())); - if (ebdt_table_builder == NULL || eblc_table_builder == NULL) { - // Out of memory. - return use_ebdt ? kRemoveBDAT : kRemoveNone; - } - - if (!InitializeBitmapBuilder(ebdt_table_builder, eblc_table_builder, - glyph_ids)) { - // Bitmap tables do not cover the glyphs in our subset. - font_builder->RemoveTableBuilder(use_ebdt ? Tag::EBLC : Tag::bloc); - font_builder->RemoveTableBuilder(use_ebdt ? Tag::EBDT : Tag::bdat); - return kRemoveBDATAndEBDT; - } - - BitmapLocaList new_loca; - ebdt_table_builder->GenerateLocaList(&new_loca); - SubsetEBLC(eblc_table_builder, new_loca); - - return use_ebdt ? kRemoveBDAT : kRemoveNone; -} - -SubsetterImpl::SubsetterImpl() { -} - -SubsetterImpl::~SubsetterImpl() { -} - -bool SubsetterImpl::LoadFont(const char* font_name, - const unsigned char* original_font, - size_t font_size) { - MemoryInputStream mis; - mis.Attach(original_font, font_size); - if (factory_ == NULL) { - factory_.Attach(FontFactory::GetInstance()); - } - - FontArray font_array; - factory_->LoadFonts(&mis, &font_array); - font_ = FindFont(font_name, font_array); - if (font_ == NULL) { - return false; - } - - return true; -} - -int SubsetterImpl::SubsetFont(const unsigned int* glyph_ids, - size_t glyph_count, - unsigned char** output_buffer) { - if (factory_ == NULL || font_ == NULL) { - return -1; - } - - // Find glyf and loca table. - GlyphTablePtr glyph_table = - down_cast<GlyphTable*>(font_->GetTable(Tag::glyf)); - LocaTablePtr loca_table = down_cast<LocaTable*>(font_->GetTable(Tag::loca)); - if (glyph_table == NULL || loca_table == NULL) { - // We are not able to subset the font. - return 0; - } - - IntegerSet glyph_id_processed; - if (!ResolveCompositeGlyphs(glyph_table, loca_table, - glyph_ids, glyph_count, &glyph_id_processed) || - glyph_id_processed.empty()) { - return 0; - } - - FontPtr new_font; - new_font.Attach(Subset(glyph_id_processed, glyph_table, loca_table)); - if (new_font == NULL) { - return 0; - } - - MemoryOutputStream output_stream; - factory_->SerializeFont(new_font, &output_stream); - int length = static_cast<int>(output_stream.Size()); - if (length > 0) { - *output_buffer = new unsigned char[length]; - memcpy(*output_buffer, output_stream.Get(), length); - } - - return length; -} - -// Long comments regarding TTF tables and PDF (from stuartg) -// -// According to PDF spec 1.4 (section 5.8), the following tables must be -// present: -// head, hhea, loca, maxp, cvt, prep, glyf, hmtx, fpgm -// cmap if font is used with a simple font dict and not a CIDFont dict -// -// Other tables we need to keep for PDF rendering to support zoom in/out: -// bdat, bloc, ebdt, eblc, ebsc, gasp -// -// Special table: -// CFF - if you have this table then you shouldn't have a glyf table and this -// is the table with all the glyphs. Shall skip subsetting completely -// since sfntly is not capable of subsetting it for now. -// post - extra info here for printing on PostScript printers but maybe not -// enough to outweigh the space taken by the names -// -// Tables to break apart: -// name - could throw away all but one language and one platform strings/ might -// throw away some of the name entries -// cmap - could strip out non-needed cmap subtables -// - format 4 subtable can be subsetted as well using sfntly -// -// Graphite tables: -// silf, glat, gloc, feat - should be okay to strip out -// -// Tables that can be discarded: -// OS/2 - everything here is for layout and description of the font that is -// elsewhere (some in the PDF objects) -// BASE, GDEF, GSUB, GPOS, JSTF - all used for layout -// kern - old style layout -// DSIG - this will be invalid after subsetting -// hdmx - layout -// PCLT - metadata that's not needed -// vmtx - layout -// vhea - layout -// VDMX -// VORG - not used by TT/OT - used by CFF -// hsty - would be surprised to see one of these - used on the Newton -// AAT tables - mort, morx, feat, acnt, bsin, just, lcar, fdsc, fmtx, prop, -// Zapf, opbd, trak, fvar, gvar, avar, cvar -// - these are all layout tables and once layout happens are not -// needed anymore -// LTSH - layout - -CALLER_ATTACH -Font* SubsetterImpl::Subset(const IntegerSet& glyph_ids, GlyphTable* glyf, - LocaTable* loca) { - // The const is initialized here to workaround VC bug of rendering all Tag::* - // as 0. These tags represents the TTF tables that we will embed in subset - // font. - const int32_t TABLES_IN_SUBSET[] = { - Tag::head, Tag::hhea, Tag::loca, Tag::maxp, Tag::cvt, - Tag::prep, Tag::glyf, Tag::hmtx, Tag::fpgm, Tag::EBDT, - Tag::EBLC, Tag::EBSC, Tag::bdat, Tag::bloc, Tag::bhed, - Tag::cmap, // Keep here for future tagged PDF development. - Tag::name, // Keep here due to legal concerns: copyright info inside. - }; - - // Setup font builders we need. - FontBuilderPtr font_builder; - font_builder.Attach(factory_->NewFontBuilder()); - IntegerSet remove_tags; - - if (SetupGlyfBuilders(font_builder, glyf, loca, glyph_ids)) { - remove_tags.insert(Tag::glyf); - remove_tags.insert(Tag::loca); - } - - switch (SetupBitmapBuilders(font_, font_builder, glyph_ids)) { - case kRemoveBDATAndEBDT: - remove_tags.insert(Tag::EBDT); - remove_tags.insert(Tag::EBLC); - remove_tags.insert(Tag::EBSC); - case kRemoveBDAT: - remove_tags.insert(Tag::bdat); - remove_tags.insert(Tag::bloc); - remove_tags.insert(Tag::bhed); - break; - default: // kRemoveNone - break; - } - - IntegerSet allowed_tags; - for (size_t i = 0; i < sizeof(TABLES_IN_SUBSET) / sizeof(int32_t); ++i) { - allowed_tags.insert(TABLES_IN_SUBSET[i]); - } - - IntegerSet result; - std::set_difference(allowed_tags.begin(), allowed_tags.end(), - remove_tags.begin(), remove_tags.end(), - std::inserter(result, result.end())); - allowed_tags = result; - - // Setup remaining builders. - for (IntegerSet::iterator i = allowed_tags.begin(), e = allowed_tags.end(); - i != e; ++i) { - Table* table = font_->GetTable(*i); - if (table) { - font_builder->NewTableBuilder(*i, table->ReadFontData()); - } - } - - return font_builder->Build(); -} - -} // namespace sfntly diff --git a/third_party/sfntly/src/subsetter/subsetter_impl.h b/third_party/sfntly/src/subsetter/subsetter_impl.h deleted file mode 100644 index ebb9203..0000000 --- a/third_party/sfntly/src/subsetter/subsetter_impl.h +++ /dev/null @@ -1,72 +0,0 @@ -/* - * Copyright 2011 Google Inc. All Rights Reserved. - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef THIRD_PARTY_SFNTLY_SRC_SUBSETTER_SUBSETTER_IMPL_H_ -#define THIRD_PARTY_SFNTLY_SRC_SUBSETTER_SUBSETTER_IMPL_H_ - -#include "third_party/sfntly/src/sfntly/font.h" -#include "third_party/sfntly/src/sfntly/font_factory.h" -#include "third_party/sfntly/src/sfntly/table/truetype/glyph_table.h" -#include "third_party/sfntly/src/sfntly/table/truetype/loca_table.h" -#include "third_party/sfntly/src/sfntly/tag.h" - -namespace sfntly { - -// Smart pointer usage in sfntly: -// -// sfntly carries a smart pointer implementation like COM. Ref-countable object -// type inherits from RefCounted<>, which have AddRef and Release just like -// IUnknown (but no QueryInterface). Use a Ptr<> based smart pointer to hold -// the object so that the object ref count is handled correctly. -// -// class Foo : public RefCounted<Foo> { -// public: -// static Foo* CreateInstance() { -// Ptr<Foo> obj = new Foo(); // ref count = 1 -// return obj.detach(); -// } -// }; -// typedef Ptr<Foo> FooPtr; // common short-hand notation -// FooPtr obj; -// obj.attach(Foo::CreatedInstance()); // ref count = 1 -// { -// FooPtr obj2 = obj; // ref count = 2 -// } // ref count = 1, obj2 out of scope -// obj.release(); // ref count = 0, object destroyed - -class SubsetterImpl { - public: - SubsetterImpl(); - ~SubsetterImpl(); - - bool LoadFont(const char* font_name, - const unsigned char* original_font, - size_t font_size); - int SubsetFont(const unsigned int* glyph_ids, - size_t glyph_count, - unsigned char** output_buffer); - - private: - CALLER_ATTACH Font* Subset(const IntegerSet& glyph_ids, - GlyphTable* glyf, LocaTable* loca); - - FontFactoryPtr factory_; - FontPtr font_; -}; - -} // namespace sfntly - -#endif // THIRD_PARTY_SFNTLY_SRC_SUBSETTER_SUBSETTER_IMPL_H_ |