/* * filter registration * Copyright (c) 2008 Vitor Sessak * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/thread.h" #include "avfilter.h" #include "config.h" extern const AVFilter ff_af_abench; extern const AVFilter ff_af_acompressor; extern const AVFilter ff_af_acontrast; extern const AVFilter ff_af_acopy; extern const AVFilter ff_af_acue; extern const AVFilter ff_af_acrossfade; extern const AVFilter ff_af_acrossover; extern const AVFilter ff_af_acrusher; extern const AVFilter ff_af_adeclick; extern const AVFilter ff_af_adeclip; extern const AVFilter ff_af_adecorrelate; extern const AVFilter ff_af_adelay; extern const AVFilter ff_af_adenorm; extern const AVFilter ff_af_aderivative; extern const AVFilter ff_af_aecho; extern const AVFilter ff_af_aemphasis; extern const AVFilter ff_af_aeval; extern const AVFilter ff_af_aexciter; extern const AVFilter ff_af_afade; extern const AVFilter ff_af_afftdn; extern const AVFilter ff_af_afftfilt; extern const AVFilter ff_af_afir; extern const AVFilter ff_af_aformat; extern const AVFilter ff_af_afreqshift; extern const AVFilter ff_af_afwtdn; extern const AVFilter ff_af_agate; extern const AVFilter ff_af_aiir; extern const AVFilter ff_af_aintegral; extern const AVFilter ff_af_ainterleave; extern const AVFilter ff_af_alatency; extern const AVFilter ff_af_alimiter; extern const AVFilter ff_af_allpass; extern const AVFilter ff_af_aloop; extern const AVFilter ff_af_amerge; extern const AVFilter ff_af_ametadata; extern const AVFilter ff_af_amix; extern const AVFilter ff_af_amultiply; extern const AVFilter ff_af_anequalizer; extern const AVFilter ff_af_anlmdn; extern const AVFilter ff_af_anlms; extern const AVFilter ff_af_anull; extern const AVFilter ff_af_apad; extern const AVFilter ff_af_aperms; extern const AVFilter ff_af_aphaser; extern const AVFilter ff_af_aphaseshift; extern const AVFilter ff_af_apsyclip; extern const AVFilter ff_af_apulsator; extern const AVFilter ff_af_arealtime; extern const AVFilter ff_af_aresample; extern const AVFilter ff_af_areverse; extern const AVFilter ff_af_arnndn; extern const AVFilter ff_af_asdr; extern const AVFilter ff_af_asegment; extern const AVFilter ff_af_aselect; extern const AVFilter ff_af_asendcmd; extern const AVFilter ff_af_asetnsamples; extern const AVFilter ff_af_asetpts; extern const AVFilter ff_af_asetrate; extern const AVFilter ff_af_asettb; extern const AVFilter ff_af_ashowinfo; extern const AVFilter ff_af_asidedata; extern const AVFilter ff_af_asoftclip; extern const AVFilter ff_af_asplit; extern const AVFilter ff_af_asr; extern const AVFilter ff_af_astats; extern const AVFilter ff_af_astreamselect; extern const AVFilter ff_af_asubboost; extern const AVFilter ff_af_asubcut; extern const AVFilter ff_af_asupercut; extern const AVFilter ff_af_asuperpass; extern const AVFilter ff_af_asuperstop; extern const AVFilter ff_af_atempo; extern const AVFilter ff_af_atilt; extern const AVFilter ff_af_atrim; extern const AVFilter ff_af_axcorrelate; extern const AVFilter ff_af_azmq; extern const AVFilter ff_af_bandpass; extern const AVFilter ff_af_bandreject; extern const AVFilter ff_af_bass; extern const AVFilter ff_af_biquad; extern const AVFilter ff_af_bs2b; extern const AVFilter ff_vf_chromaber_vulkan; extern const AVFilter ff_af_channelmap; extern const AVFilter ff_af_channelsplit; extern const AVFilter ff_af_chorus; extern const AVFilter ff_af_compand; extern const AVFilter ff_af_compensationdelay; extern const AVFilter ff_af_crossfeed; extern const AVFilter ff_af_crystalizer; extern const AVFilter ff_af_dcshift; extern const AVFilter ff_af_deesser; extern const AVFilter ff_af_drmeter; extern const AVFilter ff_af_dynaudnorm; extern const AVFilter ff_af_earwax; extern const AVFilter ff_af_ebur128; extern const AVFilter ff_af_equalizer; extern const AVFilter ff_af_extrastereo; extern const AVFilter ff_af_firequalizer; extern const AVFilter ff_af_flanger; extern const AVFilter ff_af_haas; extern const AVFilter ff_af_hdcd; extern const AVFilter ff_af_headphone; extern const AVFilter ff_af_highpass; extern const AVFilter ff_af_highshelf; extern const AVFilter ff_af_join; extern const AVFilter ff_af_ladspa; extern const AVFilter ff_af_loudnorm; extern const AVFilter ff_af_lowpass; extern const AVFilter ff_af_lowshelf; extern const AVFilter ff_af_lv2; extern const AVFilter ff_af_mcompand; extern const AVFilter ff_af_pan; extern const AVFilter ff_af_replaygain; extern const AVFilter ff_af_rubberband; extern const AVFilter ff_af_sidechaincompress; extern const AVFilter ff_af_sidechaingate; extern const AVFilter ff_af_silencedetect; extern const AVFilter ff_af_silenceremove; extern const AVFilter ff_af_sofalizer; extern const AVFilter ff_af_speechnorm; extern const AVFilter ff_af_stereotools; extern const AVFilter ff_af_stereowiden; extern const AVFilter ff_af_superequalizer; extern const AVFilter ff_af_surround; extern const AVFilter ff_af_treble; extern const AVFilter ff_af_tremolo; extern const AVFilter ff_af_vibrato; extern const AVFilter ff_af_volume; extern const AVFilter ff_af_volumedetect; extern const AVFilter ff_asrc_aevalsrc; extern const AVFilter ff_asrc_afirsrc; extern const AVFilter ff_asrc_anoisesrc; extern const AVFilter ff_asrc_anullsrc; extern const AVFilter ff_asrc_flite; extern const AVFilter ff_asrc_hilbert; extern const AVFilter ff_asrc_sinc; extern const AVFilter ff_asrc_sine; extern const AVFilter ff_asink_anullsink; extern const AVFilter ff_vf_addroi; extern const AVFilter ff_vf_alphaextract; extern const AVFilter ff_vf_alphamerge; extern const AVFilter ff_vf_amplify; extern const AVFilter ff_vf_ass; extern const AVFilter ff_vf_atadenoise; extern const AVFilter ff_vf_avgblur; extern const AVFilter ff_vf_avgblur_opencl; extern const AVFilter ff_vf_avgblur_vulkan; extern const AVFilter ff_vf_bbox; extern const AVFilter ff_vf_bench; extern const AVFilter ff_vf_bilateral; extern const AVFilter ff_vf_bitplanenoise; extern const AVFilter ff_vf_blackdetect; extern const AVFilter ff_vf_blackframe; extern const AVFilter ff_vf_blend; extern const AVFilter ff_vf_bm3d; extern const AVFilter ff_vf_boxblur; extern const AVFilter ff_vf_boxblur_opencl; extern const AVFilter ff_vf_bwdif; extern const AVFilter ff_vf_cas; extern const AVFilter ff_vf_chromahold; extern const AVFilter ff_vf_chromakey; extern const AVFilter ff_vf_chromanr; extern const AVFilter ff_vf_chromashift; extern const AVFilter ff_vf_ciescope; extern const AVFilter ff_vf_codecview; extern const AVFilter ff_vf_colorbalance; extern const AVFilter ff_vf_colorchannelmixer; extern const AVFilter ff_vf_colorcontrast; extern const AVFilter ff_vf_colorcorrect; extern const AVFilter ff_vf_colorize; extern const AVFilter ff_vf_colorkey; extern const AVFilter ff_vf_colorkey_opencl; extern const AVFilter ff_vf_colorhold; extern const AVFilter ff_vf_colorlevels; extern const AVFilter ff_vf_colormatrix; extern const AVFilter ff_vf_colorspace; extern const AVFilter ff_vf_colortemperature; extern const AVFilter ff_vf_convolution; extern const AVFilter ff_vf_convolution_opencl; extern const AVFilter ff_vf_convolve; extern const AVFilter ff_vf_copy; extern const AVFilter ff_vf_coreimage; extern const AVFilter ff_vf_cover_rect; extern const AVFilter ff_vf_crop; extern const AVFilter ff_vf_cropdetect; extern const AVFilter ff_vf_cue; extern const AVFilter ff_vf_curves; extern const AVFilter ff_vf_datascope; extern const AVFilter ff_vf_dblur; extern const AVFilter ff_vf_dctdnoiz; extern const AVFilter ff_vf_deband; extern const AVFilter ff_vf_deblock; extern const AVFilter ff_vf_decimate; extern const AVFilter ff_vf_deconvolve; extern const AVFilter ff_vf_dedot; extern const AVFilter ff_vf_deflate; extern const AVFilter ff_vf_deflicker; extern const AVFilter ff_vf_deinterlace_qsv; extern const AVFilter ff_vf_deinterlace_vaapi; extern const AVFilter ff_vf_dejudder; extern const AVFilter ff_vf_delogo; extern const AVFilter ff_vf_denoise_vaapi; extern const AVFilter ff_vf_derain; extern const AVFilter ff_vf_deshake; extern const AVFilter ff_vf_deshake_opencl; extern const AVFilter ff_vf_despill; extern const AVFilter ff_vf_detelecine; extern const AVFilter ff_vf_dilation; extern const AVFilter ff_vf_dilation_opencl; extern const AVFilter ff_vf_displace; extern const AVFilter ff_vf_dnn_classify; extern const AVFilter ff_vf_dnn_detect; extern const AVFilter ff_vf_dnn_processing; extern const AVFilter ff_vf_doubleweave; extern const AVFilter ff_vf_drawbox; extern const AVFilter ff_vf_drawgraph; extern const AVFilter ff_vf_drawgrid; extern const AVFilter ff_vf_drawtext; extern const AVFilter ff_vf_edgedetect; extern const AVFilter ff_vf_elbg; extern const AVFilter ff_vf_entropy; extern const AVFilter ff_vf_epx; extern const AVFilter ff_vf_eq; extern const AVFilter ff_vf_erosion; extern const AVFilter ff_vf_erosion_opencl; extern const AVFilter ff_vf_estdif; extern const AVFilter ff_vf_exposure; extern const AVFilter ff_vf_extractplanes; extern const AVFilter ff_vf_fade; extern const AVFilter ff_vf_fftdnoiz; extern const AVFilter ff_vf_fftfilt; extern const AVFilter ff_vf_field; extern const AVFilter ff_vf_fieldhint; extern const AVFilter ff_vf_fieldmatch; extern const AVFilter ff_vf_fieldorder; extern const AVFilter ff_vf_fillborders; extern const AVFilter ff_vf_find_rect; extern const AVFilter ff_vf_floodfill; extern const AVFilter ff_vf_format; extern const AVFilter ff_vf_fps; extern const AVFilter ff_vf_framepack; extern const AVFilter ff_vf_framerate; extern const AVFilter ff_vf_framestep; extern const AVFilter ff_vf_freezedetect; extern const AVFilter ff_vf_freezeframes; extern const AVFilter ff_vf_frei0r; extern const AVFilter ff_vf_fspp; extern const AVFilter ff_vf_gblur; extern const AVFilter ff_vf_geq; extern const AVFilter ff_vf_gradfun; extern const AVFilter ff_vf_graphmonitor; extern const AVFilter ff_vf_grayworld; extern const AVFilter ff_vf_greyedge; extern const AVFilter ff_vf_guided; extern const AVFilter ff_vf_haldclut; extern const AVFilter ff_vf_hflip; extern const AVFilter ff_vf_histeq; extern const AVFilter ff_vf_histogram; extern const AVFilter ff_vf_hqdn3d; extern const AVFilter ff_vf_hqx; extern const AVFilter ff_vf_hstack; extern const AVFilter ff_vf_hsvhold; extern const AVFilter ff_vf_hsvkey; extern const AVFilter ff_vf_hue; extern const AVFilter ff_vf_hwdownload; extern const AVFilter ff_vf_hwmap; extern const AVFilter ff_vf_hwupload; extern const AVFilter ff_vf_hwupload_cuda; extern const AVFilter ff_vf_hysteresis; extern const AVFilter ff_vf_identity; extern const AVFilter ff_vf_idet; extern const AVFilter ff_vf_il; extern const AVFilter ff_vf_inflate; extern const AVFilter ff_vf_interlace; extern const AVFilter ff_vf_interleave; extern const AVFilter ff_vf_kerndeint; extern const AVFilter ff_vf_kirsch; extern const AVFilter ff_vf_lagfun; extern const AVFilter ff_vf_latency; extern const AVFilter ff_vf_lenscorrection; extern const AVFilter ff_vf_lensfun; extern const AVFilter ff_vf_libvmaf; extern const AVFilter ff_vf_limitdiff; extern const AVFilter ff_vf_limiter; extern const AVFilter ff_vf_loop; extern const AVFilter ff_vf_lumakey; extern const AVFilter ff_vf_lut; extern const AVFilter ff_vf_lut1d; extern const AVFilter ff_vf_lut2; extern const AVFilter ff_vf_lut3d; extern const AVFilter ff_vf_lutrgb; extern const AVFilter ff_vf_lutyuv; extern const AVFilter ff_vf_maskedclamp; extern const AVFilter ff_vf_maskedmax; extern const AVFilter ff_vf_maskedmerge; extern const AVFilter ff_vf_maskedmin; extern const AVFilter ff_vf_maskedthreshold; extern const AVFilter ff_vf_maskfun; extern const AVFilter ff_vf_mcdeint; extern const AVFilter ff_vf_median; extern const AVFilter ff_vf_mergeplanes; extern const AVFilter ff_vf_mestimate; extern const AVFilter ff_vf_metadata; extern const AVFilter ff_vf_midequalizer; extern const AVFilter ff_vf_minterpolate; extern const AVFilter ff_vf_mix; extern const AVFilter ff_vf_monochrome; extern const AVFilter ff_vf_morpho; extern const AVFilter ff_vf_mpdecimate; extern const AVFilter ff_vf_msad; extern const AVFilter ff_vf_negate; extern const AVFilter ff_vf_nlmeans; extern const AVFilter ff_vf_nlmeans_opencl; extern const AVFilter ff_vf_nnedi; extern const AVFilter ff_vf_noformat; extern const AVFilter ff_vf_noise; extern const AVFilter ff_vf_normalize; extern const AVFilter ff_vf_null; extern const AVFilter ff_vf_ocr; extern const AVFilter ff_vf_ocv; extern const AVFilter ff_vf_oscilloscope; extern const AVFilter ff_vf_overlay; extern const AVFilter ff_vf_overlay_opencl; extern const AVFilter ff_vf_overlay_qsv; extern const AVFilter ff_vf_overlay_vulkan; extern const AVFilter ff_vf_overlay_cuda; extern const AVFilter ff_vf_owdenoise; extern const AVFilter ff_vf_pad; extern const AVFilter ff_vf_pad_opencl; extern const AVFilter ff_vf_palettegen; extern const AVFilter ff_vf_paletteuse; extern const AVFilter ff_vf_perms; extern const AVFilter ff_vf_perspective; extern const AVFilter ff_vf_phase; extern const AVFilter ff_vf_photosensitivity; extern const AVFilter ff_vf_pixdesctest; extern const AVFilter ff_vf_pixscope; extern const AVFilter ff_vf_pp; extern const AVFilter ff_vf_pp7; extern const AVFilter ff_vf_premultiply; extern const AVFilter ff_vf_prewitt; extern const AVFilter ff_vf_prewitt_opencl; extern const AVFilter ff_vf_procamp_vaapi; extern const AVFilter ff_vf_program_opencl; extern const AVFilter ff_vf_pseudocolor; extern const AVFilter ff_vf_psnr; extern const AVFilter ff_vf_pullup; extern const AVFilter ff_vf_qp; extern const AVFilter ff_vf_random; extern const AVFilter ff_vf_readeia608; extern const AVFilter ff_vf_readvitc; extern const AVFilter ff_vf_realtime; extern const AVFilter ff_vf_remap; extern const AVFilter ff_vf_removegrain; extern const AVFilter ff_vf_removelogo; extern const AVFilter ff_vf_repeatfields; extern const AVFilter ff_vf_reverse; extern const AVFilter ff_vf_rgbashift; extern const AVFilter ff_vf_roberts; extern const AVFilter ff_vf_roberts_opencl; extern const AVFilter ff_vf_rotate; extern const AVFilter ff_vf_sab; extern const AVFilter ff_vf_scale; extern const AVFilter ff_vf_scale_cuda; extern const AVFilter ff_vf_scale_npp; extern const AVFilter ff_vf_scale_qsv; extern const AVFilter ff_vf_scale_vaapi; extern const AVFilter ff_vf_scale_vulkan; extern const AVFilter ff_vf_scale2ref; extern const AVFilter ff_vf_scdet; extern const AVFilter ff_vf_scharr; extern const AVFilter ff_vf_scroll; extern const AVFilter ff_vf_segment; extern const AVFilter ff_vf_select; extern const AVFilter ff_vf_selectivecolor; extern const AVFilter ff_vf_sendcmd; extern const AVFilter ff_vf_separatefields; extern const AVFilter ff_vf_setdar; extern const AVFilter ff_vf_setfield; extern const AVFilter ff_vf_setparams; extern const AVFilter ff_vf_setpts; extern const AVFilter ff_vf_setrange; extern const AVFilter ff_vf_setsar; extern const AVFilter ff_vf_settb; extern const AVFilter ff_vf_sharpen_npp; extern const AVFilter ff_vf_sharpness_vaapi; extern const AVFilter ff_vf_shear; extern const AVFilter ff_vf_showinfo; extern const AVFilter ff_vf_showpalette; extern const AVFilter ff_vf_shuffleframes; extern const AVFilter ff_vf_shufflepixels; extern const AVFilter ff_vf_shuffleplanes; extern const AVFilter ff_vf_sidedata; extern const AVFilter ff_vf_signalstats; extern const AVFilter ff_vf_signature; extern const AVFilter ff_vf_smartblur; extern const AVFilter ff_vf_sobel; extern const AVFilter ff_vf_sobel_opencl; extern const AVFilter ff_vf_split; extern const AVFilter ff_vf_spp; extern const AVFilter ff_vf_sr; extern const AVFilter ff_vf_ssim; extern const AVFilter ff_vf_stereo3d; extern const AVFilter ff_vf_streamselect; extern const AVFilter ff_vf_subtitles; extern const AVFilter ff_vf_super2xsai; extern const AVFilter ff_vf_swaprect; extern const AVFilter ff_vf_swapuv; extern const AVFilter ff_vf_tblend; extern const AVFilter ff_vf_telecine; extern const AVFilter ff_vf_thistogram; extern const AVFilter ff_vf_threshold; extern const AVFilter ff_vf_thumbnail; extern const AVFilter ff_vf_thumbnail_cuda; extern const AVFilter ff_vf_tile; extern const AVFilter ff_vf_tinterlace; extern const AVFilter ff_vf_tlut2; extern const AVFilter ff_vf_tmedian; extern const AVFilter ff_vf_tmidequalizer; extern const AVFilter ff_vf_tmix; extern const AVFilter ff_vf_tonemap; extern const AVFilter ff_vf_tonemap_opencl; extern const AVFilter ff_vf_tonemap_vaapi; extern const AVFilter ff_vf_tpad; extern const AVFilter ff_vf_transpose; extern const AVFilter ff_vf_transpose_npp; extern const AVFilter ff_vf_transpose_opencl; extern const AVFilter ff_vf_transpose_vaapi; extern const AVFilter ff_vf_trim; extern const AVFilter ff_vf_unpremultiply; extern const AVFilter ff_vf_unsharp; extern const AVFilter ff_vf_unsharp_opencl; extern const AVFilter ff_vf_untile; extern const AVFilter ff_vf_uspp; extern const AVFilter ff_vf_v360; extern const AVFilter ff_vf_vaguedenoiser; extern const AVFilter ff_vf_vectorscope; extern const AVFilter ff_vf_vflip; extern const AVFilter ff_vf_vfrdet; extern const AVFilter ff_vf_vibrance; extern const AVFilter ff_vf_vidstabdetect; extern const AVFilter ff_vf_vidstabtransform; extern const AVFilter ff_vf_vif; extern const AVFilter ff_vf_vignette; extern const AVFilter ff_vf_vmafmotion; extern const AVFilter ff_vf_vpp_qsv; extern const AVFilter ff_vf_vstack; extern const AVFilter ff_vf_w3fdif; extern const AVFilter ff_vf_waveform; extern const AVFilter ff_vf_weave; extern const AVFilter ff_vf_xbr; extern const AVFilter ff_vf_xfade; extern const AVFilter ff_vf_xfade_opencl; extern const AVFilter ff_vf_xmedian; extern const AVFilter ff_vf_xstack; extern const AVFilter ff_vf_yadif; extern const AVFilter ff_vf_yadif_cuda; extern const AVFilter ff_vf_yaepblur; extern const AVFilter ff_vf_zmq; extern const AVFilter ff_vf_zoompan; extern const AVFilter ff_vf_zscale; extern const AVFilter ff_vsrc_allrgb; extern const AVFilter ff_vsrc_allyuv; extern const AVFilter ff_vsrc_cellauto; extern const AVFilter ff_vsrc_color; extern const AVFilter ff_vsrc_coreimagesrc; extern const AVFilter ff_vsrc_frei0r_src; extern const AVFilter ff_vsrc_gradients; extern const AVFilter ff_vsrc_haldclutsrc; extern const AVFilter ff_vsrc_life; extern const AVFilter ff_vsrc_mandelbrot; extern const AVFilter ff_vsrc_mptestsrc; extern const AVFilter ff_vsrc_nullsrc; extern const AVFilter ff_vsrc_openclsrc; extern const AVFilter ff_vsrc_pal75bars; extern const AVFilter ff_vsrc_pal100bars; extern const AVFilter ff_vsrc_rgbtestsrc; extern const AVFilter ff_vsrc_sierpinski; extern const AVFilter ff_vsrc_smptebars; extern const AVFilter ff_vsrc_smptehdbars; extern const AVFilter ff_vsrc_testsrc; extern const AVFilter ff_vsrc_testsrc2; extern const AVFilter ff_vsrc_yuvtestsrc; extern const AVFilter ff_vsink_nullsink; /* multimedia filters */ extern const AVFilter ff_avf_abitscope; extern const AVFilter ff_avf_adrawgraph; extern const AVFilter ff_avf_agraphmonitor; extern const AVFilter ff_avf_ahistogram; extern const AVFilter ff_avf_aphasemeter; extern const AVFilter ff_avf_avectorscope; extern const AVFilter ff_avf_concat; extern const AVFilter ff_avf_showcqt; extern const AVFilter ff_avf_showfreqs; extern const AVFilter ff_avf_showspatial; extern const AVFilter ff_avf_showspectrum; extern const AVFilter ff_avf_showspectrumpic; extern const AVFilter ff_avf_showvolume; extern const AVFilter ff_avf_showwaves; extern const AVFilter ff_avf_showwavespic; extern const AVFilter ff_vaf_spectrumsynth; /* multimedia sources */ extern const AVFilter ff_avsrc_amovie; extern const AVFilter ff_avsrc_movie; /* those filters are part of public or internal API, * they are formatted to not be found by the grep * as they are manually added again (due to their 'names' * being the same while having different 'types'). */ extern const AVFilter ff_asrc_abuffer; extern const AVFilter ff_vsrc_buffer; extern const AVFilter ff_asink_abuffer; extern const AVFilter ff_vsink_buffer; extern const AVFilter ff_af_afifo; extern const AVFilter ff_vf_fifo; #include "libavfilter/filter_list.c" const AVFilter *av_filter_iterate(void **opaque) { uintptr_t i = (uintptr_t)*opaque; const AVFilter *f = filter_list[i]; if (f) *opaque = (void*)(i + 1); return f; } const AVFilter *avfilter_get_by_name(const char *name) { const AVFilter *f = NULL; void *opaque = 0; if (!name) return NULL; while ((f = av_filter_iterate(&opaque))) if (!strcmp(f->name, name)) return f; return NULL; }