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Commit Graph

41 Commits

Author SHA1 Message Date
Andreas Rheinhardt
3afb41655e avcodec/dca: Unavpriv dca_sample_rates
Said table is 64 bytes long and exported so that it can be used both
in libavcodec and libavformat. This commit stops doing so and instead
duplicates it for shared builds, because the overhead of exporting the
symbol is bigger than 64 bytes. It consists of the length of the name of
the symbol (2x24 bytes), two entries in .dynsym (2x24 bytes), two
entries for symbol version (2x2 bytes), one hash value in the exporting
library (4 bytes) in addition to one entry in the importing library's
.got and .rela.dyn (8 + 24 bytes).
(The above numbers are for a Linux/GNU/Elf system; the numbers for other
platforms may be different.)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-01-04 13:16:49 +01:00
James Almer
87865bf6c7 Merge commit 'abf1c058d1bd0ed1b820ea5e501a4484756f00b0'
* commit 'abf1c058d1bd0ed1b820ea5e501a4484756f00b0':
  msvc: Properly specify dllexport for data symbols shared across dll boundaries

Merged-by: James Almer <jamrial@gmail.com>
2017-11-11 11:29:16 -03:00
James Almer
3df4939988 avcodec/dca: return standard error codes in avpriv_dca_parse_core_frame_header()
This prevents making the DCAParseError enum part of the ABI.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: foo86 <foobaz86@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2017-11-01 18:36:53 -03:00
James Almer
0cb8369bce avcodec/tak: make buf const in avpriv_dca_parse_core_frame_header()
Signed-off-by: James Almer <jamrial@gmail.com>
2017-10-22 20:51:38 -03:00
Martin Storsjö
abf1c058d1 msvc: Properly specify dllexport for data symbols shared across dll boundaries
We currently only have exported data symbols within libavcodec, but
the concept is easy to extend to other libraries if necessary.
The attribute declaration needs to be in a private header though,
since we can't use CONFIG_SHARED in public installed headers.

Signed-off-by: Martin Storsjö <martin@martin.st>
2017-08-31 14:22:06 +03:00
James Almer
7c9d2ad45f avcodec/dca: remove GetBitContext usage from avpriv_dca_parse_core_frame_header()
This prevents potential ABI issues with GetBitContext.

Reviewed-by: foo86 <foobaz86@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2017-07-21 12:18:10 -03:00
foo86
2123ddb425 avcodec: add avpriv_dca_parse_core_frame_header()
There are 3 different places where DCA core frame header is parsed:
decoder, parser and demuxer. Each one uses ad-hoc code. Add common core
frame header parsing function that will be used in all places.

Signed-off-by: James Almer <jamrial@gmail.com>
2017-07-18 21:04:56 -03:00
foo86
9e37cc1101 avcodec/dca: move bits per sample array to dca.c
It will be used by the parser. This change avoids unwanted parser
dependency on dcadata.

Signed-off-by: James Almer <jamrial@gmail.com>
2017-07-18 21:04:55 -03:00
foo86
a0f76b825c avcodec/dca: move EXSS sampling frequency arrays to dca.c
Avoids unwanted parser dependency on dcadata.

Signed-off-by: James Almer <jamrial@gmail.com>
2016-05-26 13:32:48 -03:00
foo86
1fee770a1c avcodec/dca: move channel counter utility into dca.h
Signed-off-by: James Almer <jamrial@gmail.com>
2016-05-01 16:50:32 -03:00
foo86
0930b2dd1f avcodec/dca: add generic defines 2016-01-31 17:09:38 +01:00
foo86
4608996772 avcodec/dca: remove old decoder
Remove all files and functions which are not going to be reused,
and disable all functions and FATE tests temporarily which will be.
2016-01-31 17:09:38 +01:00
Hendrik Leppkes
7fe77aa62e Merge commit '40d949677335a564f769823f4afdb7e7a3da8d6b'
* commit '40d949677335a564f769823f4afdb7e7a3da8d6b':
  dca: use defines for subband related constants

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-01-02 17:52:34 +01:00
Hendrik Leppkes
af1238f863 Merge commit 'aebf07075f4244caf591a3af71e5872fe314e87b'
* commit 'aebf07075f4244caf591a3af71e5872fe314e87b':
  dca: change the core to work with integer coefficients.

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2016-01-02 13:08:29 +01:00
Alexandra Hájková
40d9496773 dca: use defines for subband related constants
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
2015-12-31 11:40:32 +01:00
Alexandra Hájková
aebf07075f dca: change the core to work with integer coefficients.
The DCA core decoder converts integer coefficients read from the
bitstream to floats just after reading them (along with dequantization).
All the other steps of the audio reconstruction are done with floats
which makes the output for the DTS lossless extension (XLL)
actually lossy.
This patch changes the DCA core to work with integer coefficients
until QMF. At this point the integer coefficients are converted to floats.
The coefficients for the LFE channel (lfe_data) are not touched.
This is the first step for the really lossless XLL decoding.
2015-12-23 11:50:18 +01:00
Hendrik Leppkes
a71fff213d Merge commit '58b42345b38b46d11c32e11d9c57517f99d6a601'
* commit '58b42345b38b46d11c32e11d9c57517f99d6a601':
  dcadec: reorganise context data

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
2015-10-10 09:32:59 +02:00
Alexandra Khirnova
58b42345b3 dcadec: reorganise context data
place primary audio coding header data into DCAAudioHeader
structure to make DCAContext clearer
and move channel related data to DCAChan structure to make
them easier to use by extensions

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2015-10-07 18:45:49 +02:00
Michael Niedermayer
209001073a Merge commit '217e4ff4d1f845b76e44634e29371cd09313d1c2'
* commit '217e4ff4d1f845b76e44634e29371cd09313d1c2':
  dca: Support for XLL (lossless extension)

Conflicts:
	Changelog
	doc/general.texi
	libavcodec/Makefile
	libavcodec/dca.h
	libavcodec/dca_exss.c
	libavcodec/dcadata.h
	libavcodec/dcadec.c
	libavcodec/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-03-15 22:18:41 +01:00
Niels Möller
217e4ff4d1 dca: Support for XLL (lossless extension)
Cleanup and integration by Diego Biurrun.

Signed-off-by: Diego Biurrun <diego@biurrun.de>
2015-03-15 14:51:36 +01:00
Michael Niedermayer
87db7e7772 Merge commit '25f613f8be3b51e4396b93cda131e4631ba54302'
* commit '25f613f8be3b51e4396b93cda131e4631ba54302':
  dca: Move syncword definitions to a separate header

Conflicts:
	libavcodec/dca_parser.c
	libavformat/dtsdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-03-04 19:28:53 +01:00
Diego Biurrun
25f613f8be dca: Move syncword definitions to a separate header 2015-03-04 13:29:33 +01:00
Michael Niedermayer
d2668ae472 Merge commit 'f8c1719771dc4ac2e13e6bc8bf741854a30e3a86'
* commit 'f8c1719771dc4ac2e13e6bc8bf741854a30e3a86':
  dca: Remove separate header for DCA ExSS

Conflicts:
	libavcodec/dca.h
	libavcodec/dca_exss.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-02-17 20:18:19 +01:00
Diego Biurrun
f8c1719771 dca: Remove separate header for DCA ExSS
There is no point in having a separate header for a single declaration.
2015-02-16 10:44:56 +01:00
Michael Niedermayer
d8901c2f01 Merge commit 'b339019de4e5f4d3c661bbdba98ae248ab77e2f0'
* commit 'b339019de4e5f4d3c661bbdba98ae248ab77e2f0':
  dca: Split code for handling the EXSS extension off into a separate file

Conflicts:
	libavcodec/Makefile
	libavcodec/dcadec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2015-02-14 22:02:41 +01:00
Diego Biurrun
b339019de4 dca: Split code for handling the EXSS extension off into a separate file 2015-02-14 10:13:49 -08:00
Michael Niedermayer
7a34b7d80f avcodec/dca: Make ff_dca_convert_bitstream() available to libavformat, needed for dts_probe()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-08-06 22:28:35 +02:00
Michael Niedermayer
b1064dd783 Merge commit '1db6a080bddd14fed6b29140ecd2e21e42b1c022'
* commit '1db6a080bddd14fed6b29140ecd2e21e42b1c022':
  dca: Move ff_dca_convert_bitstream() to the DCA common code
  vdpau: wrap codec specific functions in appropiate #ifs

Conflicts:
	libavcodec/Makefile

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2013-03-28 11:18:23 +01:00
Diego Biurrun
1db6a080bd dca: Move ff_dca_convert_bitstream() to the DCA common code
This makes the DCA parser and decoder independent.
2013-03-27 14:21:45 +01:00
Michael Niedermayer
b0554fec04 Merge commit 'c0329748b04e1f175dad8c9c2ebf22a5e2dc5b72'
* 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>
2012-10-19 13:29:24 +02:00
Martin Storsjö
d66c52c2b3 Add support for building shared libraries with MSVC
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>
2012-10-18 14:26:15 +03:00
Michael Niedermayer
ec7ecb8811 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  dca: Switch dca_sample_rates to avpriv_ prefix; it is used across libs
  ARM: use =const syntax instead of explicit literal pools
  ARM: use standard syntax for all LDRD/STRD instructions
  fft: port FFT/IMDCT 3dnow functions to yasm, and disable on x86-64.
  dct-test: allow to compile without HAVE_INLINE_ASM.
  x86/dsputilenc: bury inline asm under HAVE_INLINE_ASM.
  dca: Move tables used outside of dcadec.c to a separate file.
  dca: Rename dca.c ---> dcadec.c
  x86: h264dsp: Remove unused variable ff_pb_3_1
  apetag: change a forgotten return to return 0

Conflicts:
	libavcodec/Makefile
	libavcodec/dca.c
	libavcodec/x86/fft_3dn.c
	libavcodec/x86/fft_3dn2.c
	libavcodec/x86/fft_mmx.asm

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-01 23:33:06 +02:00
Diego Biurrun
19cf7163c1 dca: Switch dca_sample_rates to avpriv_ prefix; it is used across libs 2012-08-01 11:43:31 +02:00
Diego Biurrun
9e4bca16f8 dca: Move tables used outside of dcadec.c to a separate file. 2012-08-01 00:17:17 +02:00
Mans Rullgard
2912e87a6c Replace FFmpeg with Libav in licence headers
Signed-off-by: Mans Rullgard <mans@mansr.com>
2011-03-19 13:33:20 +00:00
Kostya Shishkov
d041a59897 Add support for parsing and decoding DCA-HD streams.
Originally committed as revision 15951 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-11-29 10:06:37 +00:00
Stefano Sabatini
987903826b Globally rename the header inclusion guard names.
Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.'  to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".

Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
2008-08-31 07:39:47 +00:00
Diego Biurrun
5b21bdabe4 Add FFMPEG_ prefix to all multiple inclusion guards.
Originally committed as revision 10765 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-10-17 09:37:46 +00:00
Guillaume Poirier
efb775777f add a comment to indicate which #endif belong to which #define
Originally committed as revision 9356 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-17 18:59:28 +00:00
Måns Rullgård
699b3f99d0 add multiple inclusion guards to headers
Originally committed as revision 9345 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-06-17 00:01:30 +00:00
Diego Biurrun
98c98e04cc Move dca parser to its own file.
Originally committed as revision 8881 to svn://svn.ffmpeg.org/ffmpeg/trunk
2007-05-03 23:50:24 +00:00