| 88 | } |
| 89 | |
| 90 | std::span<const std::byte> SawyerStreamReader::decode(SawyerEncoding encoding, std::span<const std::byte> data) |
| 91 | { |
| 92 | switch (encoding) |
| 93 | { |
| 94 | case SawyerEncoding::uncompressed: |
| 95 | return data; |
| 96 | case SawyerEncoding::runLengthSingle: |
| 97 | _decodeBuffer2.clear(); |
| 98 | _decodeBuffer2.reserve(data.size()); |
| 99 | decodeRunLengthSingle(_decodeBuffer2, data); |
| 100 | return _decodeBuffer2.getSpan(); |
| 101 | case SawyerEncoding::runLengthMulti: |
| 102 | _decodeBuffer2.clear(); |
| 103 | _decodeBuffer2.reserve(data.size()); |
| 104 | decodeRunLengthSingle(_decodeBuffer2, data); |
| 105 | |
| 106 | _decodeBuffer.clear(); |
| 107 | _decodeBuffer.reserve(_decodeBuffer2.getLength()); |
| 108 | decodeRunLengthMulti(_decodeBuffer, _decodeBuffer2.getSpan()); |
| 109 | return _decodeBuffer.getSpan(); |
| 110 | case SawyerEncoding::rotate: |
| 111 | _decodeBuffer2.clear(); |
| 112 | _decodeBuffer2.reserve(data.size()); |
| 113 | decodeRotate(_decodeBuffer2, data); |
| 114 | return _decodeBuffer2.getSpan(); |
| 115 | default: |
| 116 | throw Exception::RuntimeError(exceptionUnknownEncoding); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | static void fillStream(MemoryStream& buffer, std::byte value, size_t count) |
| 121 | { |