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https://github.com/FFmpeg/FFmpeg.git
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avfilter: add SOFAlizer audio filter
Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
69e80d6ce4
commit
0a19538bcf
@ -44,6 +44,7 @@ version <next>:
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- mips32r5 option has been removed
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- mips64r6 option has been removed
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- DXVA2-accelerated VP9 decoding
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- SOFAlizer: virtual binaural acoustics filter
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version 2.8:
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4
configure
vendored
4
configure
vendored
@ -279,6 +279,7 @@ External library support:
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--disable-lzma disable lzma [autodetect]
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--enable-decklink enable Blackmagic DeckLink I/O support [no]
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--enable-mmal enable decoding via MMAL [no]
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--enable-netcdf enable NetCDF, needed for sofalizer filter [no]
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--enable-nvenc enable NVIDIA NVENC support [no]
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--enable-openal enable OpenAL 1.1 capture support [no]
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--enable-opencl enable OpenCL code
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@ -1503,6 +1504,7 @@ EXTERNAL_LIBRARY_LIST="
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libzvbi
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lzma
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mmal
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netcdf
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nvenc
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openal
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opencl
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@ -2890,6 +2892,7 @@ showfreqs_filter_deps="avcodec"
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showfreqs_filter_select="fft"
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showspectrum_filter_deps="avcodec"
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showspectrum_filter_select="rdft"
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sofalizer_filter_deps="netcdf"
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spp_filter_deps="gpl avcodec"
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spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
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stereo3d_filter_deps="gpl"
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@ -5494,6 +5497,7 @@ enabled mmal && { check_lib interface/mmal/mmal.h mmal_port_connect
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check_lib interface/mmal/mmal.h mmal_port_connect ; }
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check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
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die "ERROR: mmal not found"; }
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enabled netcdf && require_pkg_config netcdf netcdf.h nc_inq_libvers
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enabled nvenc && { check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."; } &&
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{ check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
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die "ERROR: NVENC API version 4 or older is not supported"; } &&
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@ -2889,6 +2889,35 @@ silenceremove=1:5:0.02
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@end example
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@end itemize
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@section sofalizer
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SOFAlizer uses head-related transfer functions (HRTFs) to create virtual
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loudspeakers around the user for binaural listening via headphones (audio
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formats up to 9 channels supported).
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The HRTFs are stored in SOFA files (see www.sofacoustics.org for a database).
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SOFAlizer is developed at the Acoustics Research Institute (ARI) of the
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Austrian Academy of Sciences.
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The filter accepts the following options:
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@table @option
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@item sofa
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Set the SOFA file used for rendering.
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@item gain
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Set gain applied to audio. Value is in dB. Default is 0.
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@item rotation
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Set rotation of virtual loudspeakers in deg. Default is 0.
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@item elevation
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Set elevation of virtual speakers in deg. Default is 0.
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@item radius
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Set distance in meters between loudspeakers and the listener with near-field
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HRTFs. Default is 1.
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@end table
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@section stereotools
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This filter has some handy utilities to manage stereo signals, for converting
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@ -87,6 +87,7 @@ OBJS-$(CONFIG_SIDECHAINCOMPRESS_FILTER) += af_sidechaincompress.o
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OBJS-$(CONFIG_SIDECHAINGATE_FILTER) += af_agate.o
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OBJS-$(CONFIG_SILENCEDETECT_FILTER) += af_silencedetect.o
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OBJS-$(CONFIG_SILENCEREMOVE_FILTER) += af_silenceremove.o
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OBJS-$(CONFIG_SOFALIZER_FILTER) += af_sofalizer.o
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OBJS-$(CONFIG_STEREOTOOLS_FILTER) += af_stereotools.o
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OBJS-$(CONFIG_STEREOWIDEN_FILTER) += af_stereowiden.o
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OBJS-$(CONFIG_TREBLE_FILTER) += af_biquads.o
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1018
libavfilter/af_sofalizer.c
Normal file
1018
libavfilter/af_sofalizer.c
Normal file
File diff suppressed because it is too large
Load Diff
@ -109,6 +109,7 @@ void avfilter_register_all(void)
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REGISTER_FILTER(SIDECHAINGATE, sidechaingate, af);
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REGISTER_FILTER(SILENCEDETECT, silencedetect, af);
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REGISTER_FILTER(SILENCEREMOVE, silenceremove, af);
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REGISTER_FILTER(SOFALIZER, sofalizer, af);
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REGISTER_FILTER(STEREOTOOLS, stereotools, af);
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REGISTER_FILTER(STEREOWIDEN, stereowiden, af);
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REGISTER_FILTER(TREBLE, treble, af);
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@ -289,6 +289,17 @@ AVFilterFormats *ff_make_format_list(const int *fmts)
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return formats;
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}
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AVFilterChannelLayouts *ff_make_formatu64_list(const uint64_t *fmts)
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{
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MAKE_FORMAT_LIST(AVFilterChannelLayouts,
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channel_layouts, nb_channel_layouts);
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if (count)
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memcpy(formats->channel_layouts, fmts,
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sizeof(*formats->channel_layouts) * count);
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return formats;
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}
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AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts)
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{
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MAKE_FORMAT_LIST(AVFilterChannelLayouts,
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@ -141,6 +141,9 @@ AVFilterChannelLayouts *ff_all_channel_counts(void);
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av_warn_unused_result
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AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts);
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av_warn_unused_result
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AVFilterChannelLayouts *ff_make_formatu64_list(const uint64_t *fmts);
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/**
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* A helper for query_formats() which sets all links to the same list of channel
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@ -30,7 +30,7 @@
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#include "libavutil/version.h"
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#define LIBAVFILTER_VERSION_MAJOR 6
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#define LIBAVFILTER_VERSION_MINOR 20
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#define LIBAVFILTER_VERSION_MINOR 21
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#define LIBAVFILTER_VERSION_MICRO 100
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#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
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