There are lots of files that don't need it: The number of object
files that actually need it went down from 2011 to 884 here.
Keep it for external users in order to not cause breakages.
Also improve the other headers a bit while just at it.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
And move compute_ref_coefs() to its only user: lpc.c
There is no overlap between the users of compute_lpc_coefs()
and lpc proper.
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is more spec-compliant because it does not rely
on dead-code elimination by the compiler. Especially
MSVC has problems with this, as can be seen in
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html
or
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html
This commit does not eliminate every instance where we rely
on dead code elimination: It only tackles branching to
the initialization of arch-specific dsp code, not e.g. all
uses of CONFIG_ and HAVE_ checks. But maybe it is already
enough to compile FFmpeg with MSVC with whole-programm-optimizations
enabled (if one does not disable too many components).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The min_shift parameter is needed by the MLP encoder
Signed-off-by: Jai Luthra <me@jailuthra.in>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Yields 2x improvement in function performance, and boosts aac encoding
speed by ~ 4% overall. Sample benchmark (Haswell+GCC under -march=native):
after:
ffmpeg -i sin.flac -acodec aac -y sin_new.aac 5.22s user 0.03s system 105% cpu 4.970 total
before:
ffmpeg -i sin.flac -acodec aac -y sin_new.aac 5.40s user 0.05s system 105% cpu 5.162 total
Reviewed-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Signed-off-by: Ganesh Ajjanagadde <gajjanag@gmail.com>
This commit adds a function to get the reflection coefficients on
floating point samples. It's functionally identical to
ff_lpc_calc_ref_coefs() except it works on float samples and will
return the global prediction gain. The Welch window implementation
which is more optimized works only on int32_t samples so a slower
generic expression was used.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Not needed anymore, it was only used by the AAC TNS
encoder and was replaced with a more suitable function
in the following commit.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This commit simply duplicates the functionality of ff_lpc_calc_coefs()
for the case of a Levinson-Durbin LPC with the only difference being
that floating point samples are accepted and the resulting coefficients
are raw and unquantized.
The motivation behind doing this is the fact that the AAC encoder
requires LPC in TNS and LTP and converting non-normalized floating
point coefficients to int32_t using SWR and again back for the LPC
coefficients was very impractical.
The current LPC interfaces were designed for int32_t in mind possibly
because FLAC and ALAC use this type for most internal operations.
The mathematics in case of floats remains of course identical.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
* commit '60e0ee7ca2':
lpc: always initialize ref and err
The initialization is not needed, its merged anyway as it might
help suppressing warnings and might make the code more robust against
future changes
See: c4a36b6f70
See: 0dd99628ea
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'c93ccf5a4c':
lpc: use levinson for the first pass of multipass cholesky
Conflicts:
libavcodec/lpc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '502ab21af0':
x86: lpc: simd av_update_lls
The versions are bumped due to changes in lls.h which is used across
libraries affecting intra library ABI
(This version bump also covers changes to lls.h in the immedeatly previous
commits)
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Levinson is faster, and cholesky is only needed if we want to apply different
weights to different samples, which doesn't happen on the first pass.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
* commit '14f031d7ec':
dv: use AVStream.index instead of abusing AVStream.id
lavfi: add ashowinfo filter
avcodec: Add a RFC 3389 comfort noise codec
lpc: Add a function for calculating reflection coefficients from samples
lpc: Add a function for calculating reflection coefficients from autocorrelation coefficients
lavr: document upper bound on number of output samples.
lavr: add general API usage doxy
indeo3: remove duplicate capabilities line.
fate: ac3: Add dependencies
Conflicts:
Changelog
doc/filters.texi
libavcodec/Makefile
libavcodec/allcodecs.c
libavcodec/avcodec.h
libavcodec/codec_desc.c
libavcodec/version.h
libavfilter/Makefile
libavfilter/af_ashowinfo.c
libavfilter/allfilters.c
libavfilter/version.h
libavutil/avutil.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
x86: vc1: call ff_vc1dsp_init_x86() under if (ARCH_X86)
x86: cavs: call ff_cavsdsp_init_x86() under if (ARCH_X86)
x86: call most of the x86 dsp init functions under if (ARCH_X86)
doc: support the new website layout
doc: remove a warning from filters.texi
doc: initial nut documentation
segment: drop global headers setting
lavu: fix typo in Makefile
Conflicts:
doc/Makefile
doc/filters.texi
doc/t2h.init
libavcodec/fmtconvert.c
libavcodec/proresdsp.c
libavcodec/x86/Makefile
libavcodec/x86/vc1dsp_mmx.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
doc/APIchanges: add an entry for codec descriptors.
vorbisenc: set AVCodecContext.bit_rate to 0
vorbisenc: fix quality parameter
FATE: add ALAC encoding tests
lpc: fix alignment of windowed samples for odd maximum LPC order
alacenc: use s16p sample format as input
alacenc: remove unneeded sample_fmt check
alacenc: fix max_frame_size calculation for the final frame
adpcm_swf: Use correct sample offsets when using trellis.
rtmp: support strict rtmp servers
mjpegdec: support AVRn interlaced
x86: remove FASTDIV inline asm
Conflicts:
doc/APIchanges
libavcodec/mjpegdec.c
libavcodec/vorbisenc.c
libavutil/x86/intmath.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
Fix even more missing includes after the common.h removal
build: Factor out rangecoder dependencies to CONFIG_RANGECODER
build: Factor out error resilience dependencies to CONFIG_ERROR_RESILIENCE
x86: avcodec: Consistently name all init files
Add more missing includes after removing the implicit common.h
Add some more missing includes after removing the implicit common.h
Don't include common.h from avutil.h
rtmp: Automatically compute the hash for SWFVerification
Conflicts:
configure
doc/APIchanges
doc/examples/decoding_encoding.c
libavcodec/Makefile
libavcodec/assdec.c
libavcodec/audio_frame_queue.c
libavcodec/avpacket.c
libavcodec/dv_profile.c
libavcodec/dwt.c
libavcodec/libtheoraenc.c
libavcodec/rawdec.c
libavcodec/rv40dsp.c
libavcodec/tiff.c
libavcodec/tiffenc.c
libavcodec/v210dec.h
libavcodec/vc1dsp.c
libavcodec/x86/Makefile
libavfilter/asrc_anullsrc.c
libavfilter/avfilter.c
libavfilter/buffer.c
libavfilter/formats.c
libavfilter/vf_ass.c
libavfilter/vf_drawtext.c
libavfilter/vf_fade.c
libavfilter/vf_select.c
libavfilter/video.c
libavfilter/vsrc_testsrc.c
libavformat/version.h
libavutil/audioconvert.c
libavutil/error.h
libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
