denuvo-ref/precomp-cpp
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On-the-fly liblzma compression and decompression works

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- LZMA_CONCATENATED flag removed (not needed because of a single stream)
- Code adapted from liblzma decompress.cpp example
- Sleep in own_fwrite removed
This commit is contained in:
Christian Schneider 2016-07-02 04:45:05 +02:00
parent 7eb8931b1c
commit a512eb30de
2 changed files with 57 additions and 6 deletions
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61
precomp.cpp
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@ -6073,9 +6073,6 @@ size_t own_fwrite(const void *ptr, size_t size, size_t count, FILE* stream, int
#endif // COMFORT
exit(1);
} // .avail_out == 0
if (otf_xz_stream_c.avail_in > 0) {
Sleep(110);
}
} while ((otf_xz_stream_c.avail_in > 0) || ((final_byte == 1) && (ret != LZMA_STREAM_END)));
result = size * count;
break;
@ -6140,8 +6137,62 @@ size_t own_fread(void *ptr, size_t size, size_t count, FILE* stream) {
case 4: // xz_MT
case 2: // lzma
case 3: { // xz
printf("\b\nown_fread(xz%i: %i * %i = %i\n-", compression_otf_method, size, count, size * count);
return size * count;
lzma_action action = LZMA_RUN;
lzma_ret ret;
otf_xz_stream_d.avail_out = size * count;
otf_xz_stream_d.next_out = (uint8_t *)ptr;
do {
print_work_sign(true);
if ((otf_xz_stream_d.avail_in == 0) && !feof(fin)) {
otf_xz_stream_d.next_in = (uint8_t *)bz2_in;
otf_xz_stream_d.avail_in = fread(bz2_in, 1, CHUNK, fin);
if (ferror(fin)) {
fprintf(stderr, "\nERROR: Could not read input file\n");
exit(1);
}
}
ret = lzma_code(&otf_xz_stream_d, action);
if (ret == LZMA_STREAM_END) {
decompress_otf_end = true;
break;
}
if (ret != LZMA_OK) {
const char *msg;
switch (ret) {
case LZMA_MEM_ERROR:
msg = "Memory allocation failed";
break;
case LZMA_FORMAT_ERROR:
msg = "Wrong file format";
break;
case LZMA_OPTIONS_ERROR:
msg = "Unsupported compression options";
break;
case LZMA_DATA_ERROR:
case LZMA_BUF_ERROR:
msg = "Compressed file is corrupt";
break;
default:
msg = "Unknown error, possibly a bug";
break;
}
fprintf(stderr, "\nERROR: liblzma error: %s (error code %u)\n", msg, ret);
#ifdef COMFORT
ctrl_c_handler(9);
wait_for_key();
#endif // COMFORT
exit(1);
}
} while (otf_xz_stream_d.avail_out > 0);
return size * count - otf_xz_stream_d.avail_out;
}
}
}