I think he refers to this thread = https://forum.affinity.serif.com/index.php?/topic/93631-outstanding-bw-o...

I can’t understand what kind of additional support you require from our library.

LibRaw provides access to RAW data for calling application (e.g. Affinity). Calling application is responsible for this data interpretation and processing (e.g. channel mixing if one want to treat Foveon image as BW).

current master is stable enough for production usage.

I also have a good tiff file.
But for a reason a I don't understand, libraw_open_file returns an error.

I recloned the git repo.
I wrote:

printf("version: %s\n", LIBRAW_VERSION_STR);
return(libraw_open_file(rawdata, name));

And I have:

version: 0.20.0-WorkInProgress
Error in libraw Unsupported file format or not RAW file

I need to investigate then.

Thank you for the sample. I do not see any problems with this file.

Please make sure you're using up-to-date master branch from Github,

Could you please share sample file with us

CR3 support is published in Oct 2019.

OK.
We'll disable gcc version less than 4.9 for 0.20 release.

You're correct! My gcc version is at 4.8.5. Let me update and try again. I'll post the end result here.

--Siddaharth Suman

I have generated the backtrace from valgrind. Here you go:

==23395== Process terminating with default action of signal 11 (SIGSEGV)
==23395== Bad permissions for mapped region at address 0x5185000
==23395== at 0x4EC4DBB: LibRaw::adobe_coeff(unsigned int, char const*, int) (colordata.cpp:1697)
==23395== by 0x4EAC172: LibRaw::GetNormalizedModel() (normalize_model.cpp:1157)
==23395== by 0x4E9C07D: LibRaw::identify() (identify.cpp:1071)
==23395== by 0x4EC7C95: LibRaw::open_datastream(LibRaw_abstract_datastream*) (open.cpp:376)
==23395== by 0x4EC94F0: LibRaw::open_file(char const*, long long) (open.cpp:52)
==23395== by 0x400DDC: main (simple_dcraw.cpp:122)
==23395==
==23395== HEAP SUMMARY:
==23395== in use at exit: 298,973 bytes in 9 blocks
==23395== total heap usage: 27 allocs, 18 frees, 343,743 bytes allocated
==23395==
==23395== Searching for pointers to 9 not-freed blocks
==23395== Checked 1,382,688 bytes
==23395==
==23395== 8 bytes in 1 blocks are still reachable in loss record 1 of 9
==23395== at 0x4C29E96: malloc (vg_replace_malloc.c:309)
==23395== by 0x5E1A868: ??? (in /usr/lib64/libgomp.so.1.0.0)
==23395== by 0x5E2968B: ??? (in /usr/lib64/libgomp.so.1.0.0)
==23395== by 0x5E18EC6: ??? (in /usr/lib64/libgomp.so.1.0.0)
==23395== by 0x400F4C2: _dl_init (in /usr/lib64/ld-2.17.so)
==23395== by 0x40011A9: ??? (in /usr/lib64/ld-2.17.so)
==23395== by 0x2: ???
==23395== by 0x1FFF0003D2: ???
==23395== by 0x1FFF0003DF: ???
==23395== by 0x1FFF0003E2: ???
==23395==
==23395== 37 bytes in 1 blocks are still reachable in loss record 2 of 9
==23395== at 0x4C2A4B6: operator new(unsigned long) (vg_replace_malloc.c:344)
==23395== by 0x58C4CF8: std::string::_Rep::_S_create(unsigned long, unsigned long, std::allocator const&) (in /usr/lib64/libstdc++.so.6.0.19)
==23395== by 0x58C6580: char* std::string::_S_construct(char const*, char const*, std::allocator const&, std::forward_iterator_tag) (in /usr/lib64/libstdc++.so.6.0.19)
==23395== by 0x58C69B7: std::basic_string, std::allocator >::basic_string(char const*, std::allocator const&) (in /usr/lib64/libstdc++.so.6.0.19)
==23395== by 0x4E56AA5: LibRaw_file_datastream::LibRaw_file_datastream(char const*) (libraw_datastream.cpp:56)
==23395== by 0x4EC948D: LibRaw::open_file(char const*, long long) (open.cpp:38)
==23395== by 0x400DDC: main (simple_dcraw.cpp:122)
==23395==
==23395== 40 bytes in 1 blocks are still reachable in loss record 3 of 9
==23395== at 0x4C2A4B6: operator new(unsigned long) (vg_replace_malloc.c:344)
==23395== by 0x4EC947F: LibRaw::open_file(char const*, long long) (open.cpp:38)
==23395== by 0x400DDC: main (simple_dcraw.cpp:122)
==23395==
==23395== 240 bytes in 1 blocks are still reachable in loss record 4 of 9
==23395== at 0x4C2A4B6: operator new(unsigned long) (vg_replace_malloc.c:344)
==23395== by 0x4E56AEA: LibRaw_file_datastream::LibRaw_file_datastream(char const*) (libraw_datastream.cpp:70)
==23395== by 0x4EC948D: LibRaw::open_file(char const*, long long) (open.cpp:38)
==23395== by 0x400DDC: main (simple_dcraw.cpp:122)
==23395==
==23395== 568 bytes in 1 blocks are still reachable in loss record 5 of 9
==23395== at 0x4C29E96: malloc (vg_replace_malloc.c:309)
==23395== by 0x64D458C: __fopen_internal (in /usr/lib64/libc-2.17.so)
==23395== by 0x58834FF: std::__basic_file::open(char const*, std::_Ios_Openmode, int) (in /usr/lib64/libstdc++.so.6.0.19)
==23395== by 0x58BE7F9: std::basic_filebuf >::open(char const*, std::_Ios_Openmode) (in /usr/lib64/libstdc++.so.6.0.19)
==23395== by 0x4E56B06: LibRaw_file_datastream::LibRaw_file_datastream(char const*) (libraw_datastream.cpp:74)
==23395== by 0x4EC948D: LibRaw::open_file(char const*, long long) (open.cpp:38)
==23395== by 0x400DDC: main (simple_dcraw.cpp:122)
==23395==
==23395== 2,560 bytes in 1 blocks are still reachable in loss record 6 of 9
==23395== at 0x4C29E96: malloc (vg_replace_malloc.c:309)
==23395== by 0x4ECC062: malloc (libraw_alloc.h:49)
==23395== by 0x4ECC062: LibRaw::malloc(unsigned long) (utils_libraw.cpp:239)
==23395== by 0x4EA59D4: LibRaw::parse_makernote(int, int) (makernotes.cpp:527)
==23395== by 0x4E93820: LibRaw::parseCR3(unsigned long long, unsigned long long, short&, char*, short&, short&) (cr3_parser.cpp:503)
==23395== by 0x4E9331D: LibRaw::parseCR3(unsigned long long, unsigned long long, short&, char*, short&, short&) (cr3_parser.cpp:519)
==23395== by 0x4E9331D: LibRaw::parseCR3(unsigned long long, unsigned long long, short&, char*, short&, short&) (cr3_parser.cpp:519)
==23395== by 0x4E9331D: LibRaw::parseCR3(unsigned long long, unsigned long long, short&, char*, short&, short&) (cr3_parser.cpp:519)
==23395== by 0x4E9331D: LibRaw::parseCR3(unsigned long long, unsigned long long, short&, char*, short&, short&) (cr3_parser.cpp:519)
==23395== by 0x4E9331D: LibRaw::parseCR3(unsigned long long, unsigned long long, short&, char*, short&, short&) (cr3_parser.cpp:519)
==23395== by 0x4E9DC41: LibRaw::identify() (identify.cpp:719)
==23395== by 0x4EC7C95: LibRaw::open_datastream(LibRaw_abstract_datastream*) (open.cpp:376)
==23395== by 0x4EC94F0: LibRaw::open_file(char const*, long long) (open.cpp:52)
==23395==
==23395== 4,096 bytes in 1 blocks are still reachable in loss record 7 of 9
==23395== at 0x4C29E96: malloc (vg_replace_malloc.c:309)
==23395== by 0x4EC670C: libraw_memmgr (libraw_alloc.h:36)
==23395== by 0x4EC670C: LibRaw::LibRaw(unsigned int) (init_close_utils.cpp:26)
==23395== by 0x400D75: main (simple_dcraw.cpp:64)
==23395==
==23395== 8,192 bytes in 1 blocks are still reachable in loss record 8 of 9
==23395== at 0x4C2AB5B: operator new[](unsigned long) (vg_replace_malloc.c:433)
==23395== by 0x58BE1CB: std::basic_filebuf >::_M_allocate_internal_buffer() (in /usr/lib64/libstdc++.so.6.0.19)
==23395== by 0x58BE811: std::basic_filebuf >::open(char const*, std::_Ios_Openmode) (in /usr/lib64/libstdc++.so.6.0.19)
==23395== by 0x4E56B06: LibRaw_file_datastream::LibRaw_file_datastream(char const*) (libraw_datastream.cpp:74)
==23395== by 0x4EC948D: LibRaw::open_file(char const*, long long) (open.cpp:38)
==23395== by 0x400DDC: main (simple_dcraw.cpp:122)
==23395==
==23395== 283,232 bytes in 1 blocks are definitely lost in loss record 9 of 9
==23395== at 0x4C2A4B6: operator new(unsigned long) (vg_replace_malloc.c:344)
==23395== by 0x4EC6BFF: LibRaw::LibRaw(unsigned int) (init_close_utils.cpp:104)
==23395== by 0x400D75: main (simple_dcraw.cpp:64)
==23395==
==23395== LEAK SUMMARY:
==23395== definitely lost: 283,232 bytes in 1 blocks
==23395== indirectly lost: 0 bytes in 0 blocks
==23395== possibly lost: 0 bytes in 0 blocks
==23395== still reachable: 15,741 bytes in 8 blocks
==23395== of which reachable via heuristic:
==23395== stdstring : 37 bytes in 1 blocks
==23395== suppressed: 0 bytes in 0 blocks
==23395==
==23395== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
Segmentation fault
[siddaharth.suman@sid samples]$

I executed the ldd command and got the following:

$ ldd simple_dcraw
linux-vdso.so.1 => (0x00007ffcabadf000)
libraw.so.19 => /usr/local/lib/libraw.so.19 (0x00007fd0f3b6d000)
libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007fd0f385a000)
libm.so.6 => /lib64/libm.so.6 (0x00007fd0f3558000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007fd0f3342000)
libc.so.6 => /lib64/libc.so.6 (0x00007fd0f2f7e000)
libjpeg.so.62 => /lib64/libjpeg.so.62 (0x00007fd0f2d29000)
libz.so.1 => /lib64/libz.so.1 (0x00007fd0f2b13000)
liblcms2.so.2 => /lib64/liblcms2.so.2 (0x00007fd0f28b8000)
libgomp.so.1 => /lib64/libgomp.so.1 (0x00007fd0f2692000)
/lib64/ld-linux-x86-64.so.2 (0x000055a89c51c000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fd0f2475000)

I also checked my /usr/local/lib for all the libraw files:

$ ll | grep libraw
-rw-r--r-- 1 root root 7138434 Feb 20 06:59 libraw.a
-rwxr-xr-x 1 root root 942 Feb 20 06:59 libraw.la
-rw-r--r-- 1 root root 7138434 Feb 20 06:59 libraw_r.a
-rwxr-xr-x 1 root root 956 Feb 20 06:59 libraw_r.la
lrwxrwxrwx 1 root root 18 Feb 20 06:59 libraw_r.so -> libraw_r.so.19.0.0
lrwxrwxrwx 1 root root 18 Feb 20 06:59 libraw_r.so.19 -> libraw_r.so.19.0.0
-rwxr-xr-x 1 root root 3595488 Feb 20 06:59 libraw_r.so.19.0.0
lrwxrwxrwx 1 root root 16 Feb 20 06:59 libraw.so -> libraw.so.19.0.0
lrwxrwxrwx 1 root root 16 Feb 20 06:59 libraw.so.19 -> libraw.so.19.0.0
-rwxr-xr-x 1 root root 3595488 Feb 20 06:59 libraw.so.19.0.0

--Siddaharth Suman