Decompression optimizations

[wimlib] / src / lzx-decompress.c

diff --git a/src/lzx-decompress.c b/src/lzx-decompress.c
index 6e4098fffa1c218aae813ec30f558683be4a5df2..a66e6d8b2126384880ca943fb2979141a4182340 100644 (file)
--- a/src/lzx-decompress.c
+++ b/src/lzx-decompress.c
@@ -443,9 +443,12 @@ static int lzx_read_block_header(struct input_bitstream *istream,
 
        case LZX_BLOCKTYPE_UNCOMPRESSED:
                LZX_DEBUG("Found uncompressed block.");
 
        case LZX_BLOCKTYPE_UNCOMPRESSED:
                LZX_DEBUG("Found uncompressed block.");

-               ret = align_input_bitstream(istream, true);
+
+               /* Mystery bit! */
+               ret = bitstream_read_bits(istream, 1, &i);

                if (ret != 0)
                        return ret;
                if (ret != 0)
                        return ret;

+               align_input_bitstream(istream);

                ret = bitstream_read_bytes(istream, sizeof(R), R);
                if (ret != 0)
                        return ret;
                ret = bitstream_read_bytes(istream, sizeof(R), R);
                if (ret != 0)
                        return ret;


@@ -826,7 +829,7 @@ int lzx_decompress(const void *compressed_data, unsigned compressed_len,
                        if (ret != 0)
                                return ret;
                        if (block_size & 1)
                        if (ret != 0)
                                return ret;
                        if (block_size & 1)

-                               align_input_bitstream(&istream, false);
+                               align_input_bitstream(&istream);

                        break;
                default:
                        wimlib_assert(0);
                        break;
                default:
                        wimlib_assert(0);