| 55 | } |
| 56 | |
| 57 | bool Compression::Decompress(Span<uint8> inData, Array<uint8>& outData) |
| 58 | { |
| 59 | outData.Reserve(128); |
| 60 | |
| 61 | z_stream zs; |
| 62 | zs.zalloc = Z_NULL; |
| 63 | zs.zfree = Z_NULL; |
| 64 | zs.opaque = Z_NULL; |
| 65 | zs.avail_in = (int)inData.mSize; |
| 66 | zs.next_in = inData.mVals; |
| 67 | zs.next_out = outData.mVals; |
| 68 | zs.avail_out = outData.mAllocSize; |
| 69 | |
| 70 | inflateInit(&zs); |
| 71 | |
| 72 | bool isDone = false; |
| 73 | bool hadError = false; |
| 74 | |
| 75 | while (true) |
| 76 | { |
| 77 | bool isDone = zs.avail_in == 0; |
| 78 | |
| 79 | int err = inflate(&zs, isDone ? Z_FINISH : Z_NO_FLUSH); |
| 80 | outData.mSize = (int)(zs.next_out - outData.mVals); |
| 81 | |
| 82 | if (err < 0) |
| 83 | { |
| 84 | hadError = true; |
| 85 | break; |
| 86 | } |
| 87 | |
| 88 | if ((isDone) && (err == Z_STREAM_END)) |
| 89 | break; |
| 90 | |
| 91 | if (zs.avail_out == 0) |
| 92 | { |
| 93 | outData.Reserve((int)outData.mAllocSize + (int)outData.mAllocSize / 2 + 1); |
| 94 | zs.next_out = outData.mVals + outData.mSize; |
| 95 | zs.avail_out = outData.mAllocSize - outData.mSize; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | inflateEnd(&zs); |
| 100 | return !hadError; |
| 101 | } |
| 102 | |
| 103 | ////////////////////////////////////////////////////////////////////////// |
| 104 | |