They are essential to be able to use the utils without av_malloc()
That is for example use with malloc(), memalign(), some other
private allocation function, on the stack or others.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
configure: sanitise sparc vis check
configure: recognise more sparc variants as --cpu argument
build: Include HEADERS-yes in the HEADERS variable
pcm: change references to raw to pcm
ffv1: set the range coder state in decode_slice_header
pcmdec: change default of channels parameter to 1
Conflicts:
libavformat/pcmdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'd82f188504410fdfa446c5682c128c31bb5851a4':
Remove need for padding in av_memcpy_backptr()
Conflicts:
libavutil/lzo.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '80521c1997a23e148edf89e11b939ab8646297ca':
build: allow targets to specify extra objects to link with executables
swscale: avoid pointless use of compound literals
libm: add fallbacks for various single-precision functions
network: use getservbyport() only if available
network: add fallbacks for INADDR_LOOPBACK and INET_ADDRSTRLEN
Include sys/time.h before sys/resource.h
Conflicts:
Makefile
configure
libavutil/libm.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '468ea9d5b14f92fe61f47f034e67066f65163f5f':
Revert "avutil: make some tables visible again"
Revert "avutil: Add a copy of ff_sqrt_tab back into avutil to restore ABI compatibility"
Conflicts:
libavcodec/sqrt_tab.c
libavutil/libavutil.v
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'add3a6902ea4d459f36655656a1f8daa409118a7':
lavu: bump major to 52
Conflicts:
libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '2b8dd371e4d276ca0d342e82b8b4cc281be0630a':
lavu: postpone recent deprecations until the next major bump
APIchanges: update lavr bump date
avconv: only apply presets when we have an encoder.
atrac3: replace a calculation with FFALIGN()
atrac3: remove unused ATRAC3Context field, sample_rate
atrac3: use sizeof(variable) instead of sizeof(type)
atrac3: simplify MDCT window calculation
Conflicts:
doc/APIchanges
Merged-by: Michael Niedermayer <michaelni@gmx.at>
In addition to the recent tables mess, the AVOption defaults behavior
changed, so an old lavc used with a new lavu will get completely messed
up defaults.
* commit '2d09b36c0379fcda8f984bc8ad8816c8326fd7bd':
doc/platform: Add info on shared builds with MSVC
doc/platform: Move a caveat down to the notes section
ARM: reinstate optimised intmath.h
ffv1: update to ffv1 version 3
Conflicts:
doc/platform.texi
libavcodec/ffv1.c
libavcodec/ffv1.h
libavcodec/ffv1dec.c
libavcodec/ffv1enc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'd15c21e5fa3961f10026da1a3080a3aa3cf4cec9':
avutil: Add a copy of ff_sqrt_tab back into avutil to restore ABI compatibility
avutil: make some tables visible again
avutil: remove inline av_log2 from public API
celp_math: rename ff_log2 to ff_log2_q15
Conflicts:
libavutil/libavutil.v
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Earlier versions of for instance of libavcodec expect this symbol to be
present in libavutil. This commit can be reverted after the next major
bump.
New shared builds of avcodec will link to the internal copy of the
table within that library, so those builds won't rely on this table
being present in avutil any longer either.
Signed-off-by: Martin Storsjö <martin@martin.st>
These tables are used for instance by older versions of libavcodec and
need to remain visible until the next SONAME bump.
Signed-off-by: Martin Storsjö <martin@martin.st>
This removes inline av_log2 and av_log2_16bit from the public API,
instead exporting them as regular functions. In-tree code still
gets the inline and otherwise optimised variants.
Signed-off-by: Mans Rullgard <mans@mansr.com>
* qatar/master:
configure: Group math functions into a separate variable
avutil/mem: K&R formatting cosmetics
avutil/lzo: K&R formatting cosmetics
Conflicts:
configure
libavutil/mem.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'c9ef43215c7d68c2cdcdbe02287aa114f27a32ed':
fate-vc1: add dependencies
ARM: fix overreads in neon h264 chroma mc
rtsp: Make sure the ret variable is initialized in ff_rtsp_fetch_packet
gitignore: ignore files created by msvc
fate: Add proper dependencies for the tests in video.mak
configure: Disable Snow decoder and encoder by default
lzo: Drop obsolete fast_memcpy reference
build: Drop OBJS declaration for non-existing PCM_DVD encoder
mpeg4videodec: Disable frame multithreading for GMC, its not implemented at all
Conflicts:
libavcodec/mpegvideo.c
libavformat/rtsp.c
tests/fate/microsoft.mak
tests/fate/video.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Avoid to divide num and den by gcd in case of a parsed expression, since
that is already done in av_d2q(), and force reduction in case of "a:b"
form, allowing to honour the max parameter.
The latter change is consistent with the a/b case, and with the
documentation.
* commit 'c0329748b04e1f175dad8c9c2ebf22a5e2dc5b72':
fate: add a dependency helper macro
Add support for building shared libraries with MSVC
avcodec: Rename avpriv_frame_rate_tab to ff_mpeg12_frame_rate_tab
gxf: Add a local copy of the relevant parts of the frame rate table
configure: Split out msvc as a separate target OS
aviobuf: Remove a senseless ifdef in avio_seek
Conflicts:
configure
libavcodec/dirac.c
libavcodec/mpeg12data.h
libavcodec/mpeg12enc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This requires the makedef perl script by Derek, from the
c89-to-c99 repo. That scripts produces a .def file, listing
the symbols to be exported, based on the gcc version scripts
and the built object files.
To properly load non-function symbols from DLL files, the
data symbol declarations need to have the attribute
__declspec(dllimport) when building the calling code. (On mingw,
the linker can fix this up automatically, which is why it has not
been an issue so far. If this attribute is omitted, linking
actually succeeds, but reads from the table will not produce the
desired results at runtime.)
MSVC seems to manage to link DLLs (and run properly) even if
this attribute is present while building the library itself
(which normally isn't recommended) - other object files in the
same library manage to link to the symbol (with a small warning
at link time, like "warning LNK4049: locally defined symbol
_avpriv_mpa_bitrate_tab imported" - it doesn't seem to be possible
to squelch this warning), and the definition of the tables
themselves produce a warning that can be squelched ("warning C4273:
'avpriv_mpa_bitrate_tab' : inconsistent dll linkage, see previous
definition of 'avpriv_mpa_bitrate_tab').
In this setup, mingw isn't able to link object files that refer to
data symbols with __declspec(dllimport) without those symbols
actually being linked via a DLL (linking avcodec.dll ends up with
errors like "undefined reference to `__imp__avpriv_mpa_freq_tab'").
The dllimport declspec isn't needed at all in mingw, so we simply
choose not to declare it for other compilers than MSVC that requires
it. (If ICL support later requires it, the condition can be extended
later to include both of them.)
This also implies that code that is built to link to a certain
library as a DLL can't link to the same library as a static library.
Therefore, we only allow building either static or shared but not
both at the same time. (That is, static libraries as such can be,
and actually are, built - this is used for linking the test tools to
internal symbols in the libraries - but e.g. libavformat built to
link to libavcodec as a DLL cannot link statically to libavcodec.)
Also, linking to DLLs is slightly different from linking to shared
libraries on other platforms. DLLs use a thing called import
libraries, which is basically a stub library allowing the linker
to know which symbols exist in the DLL and what name the DLL will
have at runtime.
In mingw/gcc, the import library is usually named libfoo.dll.a,
which goes next to a static library named libfoo.a. This allows
gcc to pick the dynamic one, if available, from the normal -lfoo
switches, just as it does for libfoo.a vs libfoo.so on Unix. On
MSVC however, you need to literally specify the name of the import
library instead of the static library.
Signed-off-by: Martin Storsjö <martin@martin.st>
