1 ///////////////////////////////////////////////////////////////////////////////
3 /// \file test_bcj_exact_size.c
4 /// \brief Tests BCJ decoding when the output size is known
6 /// These tests fail with XZ Utils 5.0.3 and earlier.
8 // Author: Lasse Collin
10 // This file has been put into the public domain.
11 // You can do whatever you want with this file.
13 ///////////////////////////////////////////////////////////////////////////////
18 /// Something to be compressed
19 static const uint8_t in
[16] = "0123456789ABCDEF";
21 /// in[] after compression
22 static uint8_t compressed
[1024];
23 static size_t compressed_size
= 0;
25 /// Output buffer for decompressing compressed[]
26 static uint8_t out
[sizeof(in
)];
32 // Compress with PowerPC BCJ and LZMA2. PowerPC BCJ is used because
33 // it has fixed 4-byte alignment which makes triggering the potential
35 lzma_options_lzma opt_lzma2
;
36 succeed(lzma_lzma_preset(&opt_lzma2
, 0));
38 lzma_filter filters
[3] = {
39 { .id
= LZMA_FILTER_POWERPC
, .options
= NULL
},
40 { .id
= LZMA_FILTER_LZMA2
, .options
= &opt_lzma2
},
41 { .id
= LZMA_VLI_UNKNOWN
, .options
= NULL
},
44 expect(lzma_stream_buffer_encode(filters
, LZMA_CHECK_CRC32
, NULL
,
46 compressed
, &compressed_size
, sizeof(compressed
))
54 lzma_stream strm
= LZMA_STREAM_INIT
;
55 expect(lzma_stream_decoder(&strm
, 10 << 20, 0) == LZMA_OK
);
57 strm
.next_in
= compressed
;
61 if (strm
.total_in
< compressed_size
)
64 const lzma_ret ret
= lzma_code(&strm
, LZMA_RUN
);
65 if (ret
== LZMA_STREAM_END
) {
66 expect(strm
.total_in
== compressed_size
);
67 expect(strm
.total_out
== sizeof(in
));
71 expect(ret
== LZMA_OK
);
73 if (strm
.total_out
< sizeof(in
))
80 decompress_empty(void)
82 // An empty file with one Block using PowerPC BCJ and LZMA2.
83 static const uint8_t empty_bcj_lzma2
[] = {
84 0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00, 0x00, 0x01,
85 0x69, 0x22, 0xDE, 0x36, 0x02, 0x01, 0x05, 0x00,
86 0x21, 0x01, 0x00, 0x00, 0x7F, 0xE0, 0xF1, 0xC8,
87 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
88 0x00, 0x01, 0x11, 0x00, 0x3B, 0x96, 0x5F, 0x73,
89 0x90, 0x42, 0x99, 0x0D, 0x01, 0x00, 0x00, 0x00,
90 0x00, 0x01, 0x59, 0x5A
93 // Decompress without giving any output space.
94 uint64_t memlimit
= 1 << 20;
97 expect(lzma_stream_buffer_decode(&memlimit
, 0, NULL
,
98 empty_bcj_lzma2
, &in_pos
, sizeof(empty_bcj_lzma2
),
99 out
, &out_pos
, 0) == LZMA_OK
);
100 expect(in_pos
== sizeof(empty_bcj_lzma2
));
101 expect(out_pos
== 0);