diff options
author | Zeno Albisser <zeno.albisser@theqtcompany.com> | 2014-12-05 15:04:29 +0100 |
---|---|---|
committer | Andras Becsi <andras.becsi@theqtcompany.com> | 2014-12-09 10:49:28 +0100 |
commit | af6588f8d723931a298c995fa97259bb7f7deb55 (patch) | |
tree | 060ca707847ba1735f01af2372e0d5e494dc0366 /chromium/third_party/brotli | |
parent | 2fff84d821cc7b1c785f6404e0f8091333283e74 (diff) | |
download | qtwebengine-chromium-af6588f8d723931a298c995fa97259bb7f7deb55.tar.gz |
BASELINE: Update chromium to 40.0.2214.28 and ninja to 1.5.3.
Change-Id: I759465284fd64d59ad120219cbe257f7402c4181
Reviewed-by: Andras Becsi <andras.becsi@theqtcompany.com>
Diffstat (limited to 'chromium/third_party/brotli')
-rw-r--r-- | chromium/third_party/brotli/src/brotli/dec/types.h | 7 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/buffer.h | 5 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/font.cc | 17 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/font.h | 3 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/normalize.cc | 103 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/round.h | 2 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/table_tags.h | 1 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/transform.cc | 6 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/woff2_enc.cc | 69 | ||||
-rw-r--r-- | chromium/third_party/brotli/src/woff2/woff2_enc.h | 10 |
10 files changed, 182 insertions, 41 deletions
diff --git a/chromium/third_party/brotli/src/brotli/dec/types.h b/chromium/third_party/brotli/src/brotli/dec/types.h index bc09f8bbc77..2f79b2a5d75 100644 --- a/chromium/third_party/brotli/src/brotli/dec/types.h +++ b/chromium/third_party/brotli/src/brotli/dec/types.h @@ -22,10 +22,11 @@ #ifndef _MSC_VER #include <inttypes.h> -#ifdef __STRICT_ANSI__ -#define BROTLI_INLINE -#else /* __STRICT_ANSI__ */ +#if defined(__cplusplus) || !defined(__STRICT_ANSI__) \ + || __STDC_VERSION__ >= 199901L #define BROTLI_INLINE inline +#else +#define BROTLI_INLINE #endif #else typedef signed char int8_t; diff --git a/chromium/third_party/brotli/src/woff2/buffer.h b/chromium/third_party/brotli/src/woff2/buffer.h index 5111c651a58..3595e845b31 100644 --- a/chromium/third_party/brotli/src/woff2/buffer.h +++ b/chromium/third_party/brotli/src/woff2/buffer.h @@ -37,6 +37,7 @@ typedef unsigned __int64 uint64_t; #include <stdint.h> #endif +#include <cstdio> #include <cstdlib> #include <cstring> #include <limits> @@ -49,8 +50,8 @@ namespace woff2 { #define FONT_COMPRESSION_FAILURE() \ util::compression::font::Failure(__FILE__, __LINE__, __PRETTY_FUNCTION__) inline bool Failure(const char *f, int l, const char *fn) { - std::fprintf(stderr, "ERROR at %s:%d (%s)\n", f, l, fn); - std::fflush(stderr); + fprintf(stderr, "ERROR at %s:%d (%s)\n", f, l, fn); + fflush(stderr); return false; } #endif diff --git a/chromium/third_party/brotli/src/woff2/font.cc b/chromium/third_party/brotli/src/woff2/font.cc index c0fb2060640..a7e5607b4d7 100644 --- a/chromium/third_party/brotli/src/woff2/font.cc +++ b/chromium/third_party/brotli/src/woff2/font.cc @@ -130,8 +130,17 @@ int NumGlyphs(const Font& font) { if (head_table == NULL || loca_table == NULL || head_table->length < 52) { return 0; } - int index_fmt = head_table->data[51]; - return (loca_table->length / (index_fmt == 0 ? 2 : 4)) - 1; + int index_fmt = IndexFormat(font); + int num_glyphs = (loca_table->length / (index_fmt == 0 ? 2 : 4)) - 1; + return num_glyphs; +} + +int IndexFormat(const Font& font) { + const Font::Table* head_table = font.FindTable(kHeadTableTag); + if (head_table == NULL) { + return 0; + } + return head_table->data[51]; } bool GetGlyphData(const Font& font, int glyph_index, @@ -146,7 +155,9 @@ bool GetGlyphData(const Font& font, int glyph_index, head_table->length < 52) { return FONT_COMPRESSION_FAILURE(); } - int index_fmt = head_table->data[51]; + + int index_fmt = IndexFormat(font); + Buffer loca_buf(loca_table->data, loca_table->length); if (index_fmt == 0) { uint16_t offset1, offset2; diff --git a/chromium/third_party/brotli/src/woff2/font.h b/chromium/third_party/brotli/src/woff2/font.h index 01da720b243..08c414ce765 100644 --- a/chromium/third_party/brotli/src/woff2/font.h +++ b/chromium/third_party/brotli/src/woff2/font.h @@ -66,6 +66,9 @@ bool WriteFont(const Font& font, uint8_t* dst, size_t dst_size); // zero for CFF-flavored fonts. int NumGlyphs(const Font& font); +// Returns the index format of the font +int IndexFormat(const Font& font); + // Sets *glyph_data and *glyph_size to point to the location of the glyph data // with the given index. Returns false if the glyph is not found. bool GetGlyphData(const Font& font, int glyph_index, diff --git a/chromium/third_party/brotli/src/woff2/normalize.cc b/chromium/third_party/brotli/src/woff2/normalize.cc index 0812b00de64..a816feb4ba6 100644 --- a/chromium/third_party/brotli/src/woff2/normalize.cc +++ b/chromium/third_party/brotli/src/woff2/normalize.cc @@ -63,29 +63,16 @@ void NormalizeSimpleGlyphBoundingBox(Glyph* glyph) { } // namespace -bool NormalizeGlyphs(Font* font) { - Font::Table* head_table = font->FindTable(kHeadTableTag); +namespace { + +bool WriteNormalizedLoca(int index_fmt, int num_glyphs, Font* font) { Font::Table* glyf_table = font->FindTable(kGlyfTableTag); Font::Table* loca_table = font->FindTable(kLocaTableTag); - if (head_table == NULL || loca_table == NULL || glyf_table == NULL) { - return FONT_COMPRESSION_FAILURE(); - } - int index_fmt = head_table->data[51]; - int num_glyphs = NumGlyphs(*font); - // We need to allocate a bit more than its original length for the normalized - // glyf table, since it can happen that the glyphs in the original table are - // 2-byte aligned, while in the normalized table they are 4-byte aligned. - // That gives a maximum of 2 bytes increase per glyph. However, there is no - // theoretical guarantee that the total size of the flags plus the coordinates - // is the smallest possible in the normalized version, so we have to allow - // some general overhead. - // TODO(user) Figure out some more precise upper bound on the size of - // the overhead. - size_t max_normalized_glyf_size = 1.1 * glyf_table->length + 2 * num_glyphs; + int glyph_sz = index_fmt == 0 ? 2 : 4; + loca_table->buffer.resize(Round4(num_glyphs + 1) * glyph_sz); + loca_table->length = (num_glyphs + 1) * glyph_sz; - glyf_table->buffer.resize(max_normalized_glyf_size); - loca_table->buffer.resize(Round4(loca_table->length)); uint8_t* glyf_dst = &glyf_table->buffer[0]; uint8_t* loca_dst = &loca_table->buffer[0]; uint32_t glyf_offset = 0; @@ -113,6 +100,10 @@ bool NormalizeGlyphs(Font* font) { } glyf_offset += glyf_dst_size; } + if (glyf_offset == 0) { + return false; + } + StoreLoca(index_fmt, glyf_offset, &loca_offset, loca_dst); glyf_table->buffer.resize(glyf_offset); @@ -123,6 +114,74 @@ bool NormalizeGlyphs(Font* font) { return true; } +} // namespace + +namespace { + +bool MakeEditableBuffer(Font* font, int tableTag) { + Font::Table* table = font->FindTable(tableTag); + if (table == NULL) { + return FONT_COMPRESSION_FAILURE(); + } + int sz = Round4(table->length); + table->buffer.resize(sz); + uint8_t* buf = &table->buffer[0]; + memcpy(buf, table->data, sz); + table->data = buf; + return true; +} + +} // namespace + +bool NormalizeGlyphs(Font* font) { + Font::Table* cff_table = font->FindTable(kCffTableTag); + Font::Table* head_table = font->FindTable(kHeadTableTag); + Font::Table* glyf_table = font->FindTable(kGlyfTableTag); + Font::Table* loca_table = font->FindTable(kLocaTableTag); + if (head_table == NULL) { + return FONT_COMPRESSION_FAILURE(); + } + // CFF, no loca, no glyf is OK for CFF. If so, don't normalize. + if (cff_table != NULL && loca_table == NULL && glyf_table == NULL) { + return true; + } + if (loca_table == NULL || glyf_table == NULL) { + return FONT_COMPRESSION_FAILURE(); + } + int index_fmt = head_table->data[51]; + int num_glyphs = NumGlyphs(*font); + + // We need to allocate a bit more than its original length for the normalized + // glyf table, since it can happen that the glyphs in the original table are + // 2-byte aligned, while in the normalized table they are 4-byte aligned. + // That gives a maximum of 2 bytes increase per glyph. However, there is no + // theoretical guarantee that the total size of the flags plus the coordinates + // is the smallest possible in the normalized version, so we have to allow + // some general overhead. + // TODO(user) Figure out some more precise upper bound on the size of + // the overhead. + size_t max_normalized_glyf_size = 1.1 * glyf_table->length + 2 * num_glyphs; + + glyf_table->buffer.resize(max_normalized_glyf_size); + + // if we can't write a loca using short's (index_fmt 0) + // try again using longs (index_fmt 1) + if (!WriteNormalizedLoca(index_fmt, num_glyphs, font)) { + if (index_fmt != 0) { + return FONT_COMPRESSION_FAILURE(); + } + + // Rewrite loca with 4-byte entries & update head to match + index_fmt = 1; + if (!WriteNormalizedLoca(index_fmt, num_glyphs, font)) { + return FONT_COMPRESSION_FAILURE(); + } + head_table->buffer[51] = 1; + } + + return true; +} + bool NormalizeOffsets(Font* font) { uint32_t offset = 12 + 16 * font->num_tables; for (auto& i : font->tables) { @@ -168,10 +227,7 @@ bool FixChecksums(Font* font) { if (head_table == NULL || head_table->length < 12) { return FONT_COMPRESSION_FAILURE(); } - head_table->buffer.resize(Round4(head_table->length)); uint8_t* head_buf = &head_table->buffer[0]; - memcpy(head_buf, head_table->data, Round4(head_table->length)); - head_table->data = head_buf; size_t offset = 8; StoreU32(0, &offset, head_buf); uint32_t file_checksum = 0; @@ -187,7 +243,8 @@ bool FixChecksums(Font* font) { } bool NormalizeFont(Font* font) { - return (RemoveDigitalSignature(font) && + return (MakeEditableBuffer(font, kHeadTableTag) && + RemoveDigitalSignature(font) && NormalizeGlyphs(font) && NormalizeOffsets(font) && FixChecksums(font)); diff --git a/chromium/third_party/brotli/src/woff2/round.h b/chromium/third_party/brotli/src/woff2/round.h index cd6e5aa4f4f..8fd0f4751b7 100644 --- a/chromium/third_party/brotli/src/woff2/round.h +++ b/chromium/third_party/brotli/src/woff2/round.h @@ -17,6 +17,8 @@ #ifndef WOFF2_ROUND_H_ #define WOFF2_ROUND_H_ +#include <limits.h> + namespace woff2 { // Round a value up to the nearest multiple of 4. Don't round the value in the diff --git a/chromium/third_party/brotli/src/woff2/table_tags.h b/chromium/third_party/brotli/src/woff2/table_tags.h index f1b219c015d..c9b09bb6e38 100644 --- a/chromium/third_party/brotli/src/woff2/table_tags.h +++ b/chromium/third_party/brotli/src/woff2/table_tags.h @@ -26,6 +26,7 @@ static const uint32_t kGlyfTableTag = 0x676c7966; static const uint32_t kHeadTableTag = 0x68656164; static const uint32_t kLocaTableTag = 0x6c6f6361; static const uint32_t kDsigTableTag = 0x44534947; +static const uint32_t kCffTableTag = 0x43464620; extern const uint32_t kKnownTags[]; diff --git a/chromium/third_party/brotli/src/woff2/transform.cc b/chromium/third_party/brotli/src/woff2/transform.cc index bb3a27a4f79..44a47815408 100644 --- a/chromium/third_party/brotli/src/woff2/transform.cc +++ b/chromium/third_party/brotli/src/woff2/transform.cc @@ -227,6 +227,12 @@ class GlyfEncoder { } // namespace bool TransformGlyfAndLocaTables(Font* font) { + // no transform for CFF + if (font->FindTable(kCffTableTag) != NULL + && font->FindTable(kGlyfTableTag) == NULL + && font->FindTable(kLocaTableTag) == NULL) { + return true; + } Font::Table* transformed_glyf = &font->tables[kGlyfTableTag ^ 0x80808080]; Font::Table* transformed_loca = &font->tables[kLocaTableTag ^ 0x80808080]; diff --git a/chromium/third_party/brotli/src/woff2/woff2_enc.cc b/chromium/third_party/brotli/src/woff2/woff2_enc.cc index b8afd92cc25..6150935c718 100644 --- a/chromium/third_party/brotli/src/woff2/woff2_enc.cc +++ b/chromium/third_party/brotli/src/woff2/woff2_enc.cc @@ -12,7 +12,7 @@ // See the License for the specific language governing permissions and // limitations under the License. // -// Library for converting WOFF2 format font files to their TTF versions. +// Library for converting TTF format font files to their WOFF2 versions. #include "./woff2_enc.h" @@ -53,7 +53,7 @@ size_t Base128Size(size_t n) { void StoreBase128(size_t len, size_t* offset, uint8_t* dst) { size_t size = Base128Size(len); for (int i = 0; i < size; ++i) { - int b = (int)(len >> (7 * (size - i - 1))) & 0x7f; + int b = static_cast<int>((len >> (7 * (size - i - 1))) & 0x7f); if (i < size - 1) { b |= 0x80; } @@ -96,6 +96,9 @@ int KnownTableIndex(uint32_t tag) { void StoreTableEntry(const Table& table, size_t* offset, uint8_t* dst) { uint8_t flag_byte = KnownTableIndex(table.tag); dst[(*offset)++] = flag_byte; + // The index here is treated as a set of flag bytes because + // bits 6 and 7 of the byte are reserved for future use as flags. + // 0x3f or 63 means an arbitrary table tag. if ((flag_byte & 0x3f) == 0x3f) { StoreU32(table.tag, offset, dst); } @@ -106,7 +109,8 @@ void StoreTableEntry(const Table& table, size_t* offset, uint8_t* dst) { } size_t TableEntrySize(const Table& table) { - size_t size = KnownTableIndex(table.tag) < 31 ? 1 : 5; + uint8_t flag_byte = KnownTableIndex(table.tag); + size_t size = ((flag_byte & 0x3f) != 0x3f) ? 1 : 5; size += Base128Size(table.src_length); if ((table.flags & kWoff2FlagsTransform) != 0) { size += Base128Size(table.transform_length); @@ -114,7 +118,8 @@ size_t TableEntrySize(const Table& table) { return size; } -size_t ComputeWoff2Length(const std::vector<Table>& tables) { +size_t ComputeWoff2Length(const std::vector<Table>& tables, + size_t extended_metadata_length) { size_t size = kWoff2HeaderSize; for (const auto& table : tables) { size += TableEntrySize(table); @@ -123,6 +128,7 @@ size_t ComputeWoff2Length(const std::vector<Table>& tables) { size += table.dst_length; size = Round4(size); } + size += extended_metadata_length; return size; } @@ -150,15 +156,30 @@ size_t ComputeTotalTransformLength(const Font& font) { } // namespace size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length) { + return MaxWOFF2CompressedSize(data, length, ""); +} + +size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length, + const string& extended_metadata) { // Except for the header size, which is 32 bytes larger in woff2 format, // all other parts should be smaller (table header in short format, // transformations and compression). Just to be sure, we will give some // headroom anyway. - return length + 1024; + return length + 1024 + extended_metadata.length(); +} + +uint32_t CompressedBufferSize(uint32_t original_size) { + return 1.2 * original_size + 10240; } bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, uint8_t *result, size_t *result_length) { + return ConvertTTFToWOFF2(data, length, result, result_length, ""); +} + +bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, + uint8_t *result, size_t *result_length, + const string& extended_metadata) { Font font; if (!ReadFont(data, length, &font)) { fprintf(stderr, "Parsing of the input font failed.\n"); @@ -187,7 +208,7 @@ bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, // the size. If the compressor overflows this, it should return false and // then this function will also return false. size_t total_transform_length = ComputeTotalTransformLength(font); - size_t compression_buffer_size = 1.2 * total_transform_length + 10240; + size_t compression_buffer_size = CompressedBufferSize(total_transform_length); std::vector<uint8_t> compression_buf(compression_buffer_size); uint32_t total_compressed_length = compression_buffer_size; @@ -209,6 +230,23 @@ bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, return false; } + // Compress the extended metadata + uint32_t compressed_metadata_buf_length = + CompressedBufferSize(extended_metadata.length()); + std::vector<uint8_t> compressed_metadata_buf(compressed_metadata_buf_length); + + if (extended_metadata.length() > 0) { + if (!Woff2Compress((const uint8_t*)extended_metadata.data(), + extended_metadata.length(), + compressed_metadata_buf.data(), + &compressed_metadata_buf_length)) { + fprintf(stderr, "Compression of extended metadata failed.\n"); + return false; + } + } else { + compressed_metadata_buf_length = 0; + } + std::vector<Table> tables; for (const auto& i : font.tables) { const Font::Table& src_table = i.second; @@ -241,7 +279,8 @@ bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, tables.push_back(table); } - size_t woff2_length = ComputeWoff2Length(tables); + size_t woff2_length = + ComputeWoff2Length(tables, compressed_metadata_buf_length); if (woff2_length > *result_length) { fprintf(stderr, "Result allocation was too small (%zd vs %zd bytes).\n", *result_length, woff2_length); @@ -258,9 +297,16 @@ bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, StoreU32(ComputeTTFLength(tables), &offset, result); StoreU32(total_compressed_length, &offset, result); StoreBytes(head_table->data + 4, 4, &offset, result); // font revision - StoreU32(0, &offset, result); // metaOffset - StoreU32(0, &offset, result); // metaLength - StoreU32(0, &offset, result); // metaOrigLength + if (compressed_metadata_buf_length > 0) { + StoreU32(woff2_length - compressed_metadata_buf_length, + &offset, result); // metaOffset + StoreU32(compressed_metadata_buf_length, &offset, result); // metaLength + StoreU32(extended_metadata.length(), &offset, result); // metaOrigLength + } else { + StoreU32(0, &offset, result); // metaOffset + StoreU32(0, &offset, result); // metaLength + StoreU32(0, &offset, result); // metaOrigLength + } StoreU32(0, &offset, result); // privOffset StoreU32(0, &offset, result); // privLength for (const auto& table : tables) { @@ -270,6 +316,9 @@ bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, StoreBytes(table.dst_data, table.dst_length, &offset, result); offset = Round4(offset); } + StoreBytes(compressed_metadata_buf.data(), compressed_metadata_buf_length, + &offset, result); + if (*result_length != offset) { fprintf(stderr, "Mismatch between computed and actual length " "(%zd vs %zd)\n", *result_length, offset); diff --git a/chromium/third_party/brotli/src/woff2/woff2_enc.h b/chromium/third_party/brotli/src/woff2/woff2_enc.h index 18adc0c1a5f..d6eb4dbfd23 100644 --- a/chromium/third_party/brotli/src/woff2/woff2_enc.h +++ b/chromium/third_party/brotli/src/woff2/woff2_enc.h @@ -19,11 +19,17 @@ #include <stddef.h> #include <inttypes.h> +#include <string> + +using std::string; + namespace woff2 { // Returns an upper bound on the size of the compressed file. size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length); +size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length, + const string& extended_metadata); // Compresses the font into the target buffer. *result_length should be at least // the value returned by MaxWOFF2CompressedSize(), upon return, it is set to the @@ -31,6 +37,10 @@ size_t MaxWOFF2CompressedSize(const uint8_t* data, size_t length); bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, uint8_t *result, size_t *result_length); +bool ConvertTTFToWOFF2(const uint8_t *data, size_t length, + uint8_t *result, size_t *result_length, + const string& extended_metadata); + } // namespace woff2 #endif // WOFF2_WOFF2_ENC_H_ |