| 76 | } |
| 77 | |
| 78 | Status WritePaddedWithOffset(io::OutputStream* stream, const uint8_t* data, |
| 79 | int64_t bit_offset, const int64_t length, |
| 80 | int64_t* bytes_written) { |
| 81 | data = data + bit_offset / 8; |
| 82 | uint8_t bit_shift = static_cast<uint8_t>(bit_offset % 8); |
| 83 | if (bit_offset == 0) { |
| 84 | RETURN_NOT_OK(stream->Write(data, length)); |
| 85 | } else { |
| 86 | constexpr int64_t buffersize = 256; |
| 87 | uint8_t buffer[buffersize]; |
| 88 | const uint8_t lshift = static_cast<uint8_t>(8 - bit_shift); |
| 89 | const uint8_t* buffer_end = buffer + buffersize; |
| 90 | uint8_t* buffer_it = buffer; |
| 91 | |
| 92 | for (const uint8_t* end = data + length; data != end;) { |
| 93 | uint8_t r = static_cast<uint8_t>(*data++ >> bit_shift); |
| 94 | uint8_t l = static_cast<uint8_t>(*data << lshift); |
| 95 | uint8_t value = l | r; |
| 96 | *buffer_it++ = value; |
| 97 | if (buffer_it == buffer_end) { |
| 98 | RETURN_NOT_OK(stream->Write(buffer, buffersize)); |
| 99 | buffer_it = buffer; |
| 100 | } |
| 101 | } |
| 102 | if (buffer_it != buffer) { |
| 103 | RETURN_NOT_OK(stream->Write(buffer, buffer_it - buffer)); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | int64_t remainder = PaddedLength(length) - length; |
| 108 | if (remainder != 0) { |
| 109 | RETURN_NOT_OK(stream->Write(kPaddingBytes, remainder)); |
| 110 | } |
| 111 | *bytes_written = length + remainder; |
| 112 | return Status::OK(); |
| 113 | } |
| 114 | |
| 115 | Status WritePadded(io::OutputStream* stream, const uint8_t* data, int64_t length, |
| 116 | int64_t* bytes_written) { |
no test coverage detected