| #include "SkEndian.h" |
| #include "SkSfntUtils.h" |
| |
| static uint16_t parse_be16(const uint8_t*& p) { |
| uint16_t value = (p[0] << 8) | p[1]; |
| p += 2; |
| return value; |
| } |
| |
| static uint32_t parse_be32(const uint8_t*& p) { |
| uint32_t value = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]; |
| p += 4; |
| return value; |
| } |
| |
| static Sk64 parse_be64(const uint8_t*& p) { |
| Sk64 value; |
| value.fHi = (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]; |
| value.fLo = (p[4] << 24) | (p[5] << 16) | (p[6] << 8) | p[7]; |
| p += 8; |
| return value; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkSfntUtils::ReadTable_head(SkFontID fontID, SkSfntTable_head* head) { |
| static const uint32_t gTag = SkSetFourByteTag('h', 'e', 'a', 'd'); |
| static const ssize_t gSize = 54; |
| |
| uint8_t storage[gSize]; |
| ssize_t size = SkFontHost::GetTableData(fontID, gTag, 0, gSize, storage); |
| if (size != gSize) { |
| return false; |
| } |
| |
| const uint8_t* p = storage; |
| head->fVersion = parse_be32(p); |
| head->fRevision = parse_be32(p); |
| head->fCheckSumAdjustment = parse_be32(p); |
| head->fMagicNumber = parse_be32(p); |
| head->fFlags = parse_be16(p); |
| head->fUnitsPerEm = parse_be16(p); |
| head->fDateCreated = parse_be64(p); |
| head->fDateModified = parse_be64(p); |
| head->fXMin = parse_be16(p); |
| head->fXMin = parse_be16(p); |
| head->fXMin = parse_be16(p); |
| head->fXMin = parse_be16(p); |
| head->fMacStyle = parse_be16(p); |
| head->fLowestPPEM = parse_be16(p); |
| head->fFontDirectionHint = parse_be16(p); |
| head->fIndexToLocFormat = parse_be16(p); |
| head->fGlyphDataFormat = parse_be16(p); |
| SkASSERT(p - storage == size); |
| return true; |
| } |
| |
| bool SkSfntUtils::ReadTable_maxp(SkFontID fontID, SkSfntTable_maxp* maxp) { |
| static const uint32_t gTag = SkSetFourByteTag('m', 'a', 'x', 'p'); |
| static const ssize_t gSize = 32; |
| |
| uint8_t storage[gSize]; |
| ssize_t size = SkFontHost::GetTableData(fontID, gTag, 0, gSize, storage); |
| if (size != gSize) { |
| return false; |
| } |
| |
| const uint8_t* p = storage; |
| maxp->fVersion = parse_be32(p); |
| maxp->fNumGlyphs = parse_be16(p); |
| maxp->fMaxPoints = parse_be16(p); |
| maxp->fMaxContours = parse_be16(p); |
| maxp->fMaxComponentPoints = parse_be16(p); |
| maxp->fMaxComponentContours = parse_be16(p); |
| maxp->fMaxZones = parse_be16(p); |
| maxp->fMaxTwilightPoints = parse_be16(p); |
| maxp->fMaxStorage = parse_be16(p); |
| maxp->fMaxFunctionDefs = parse_be16(p); |
| maxp->fMaxInstructionDefs = parse_be16(p); |
| maxp->fMaxStackElements = parse_be16(p); |
| maxp->fMaxSizeOfInstructions = parse_be16(p); |
| maxp->fMaxComponentElements = parse_be16(p); |
| maxp->fMaxComponentDepth = parse_be16(p); |
| SkASSERT(p - storage == size); |
| return true; |
| } |
| |