| /* |
| * Copyright (c) 2013 Paul B Mahol |
| * Copyright (c) 2006-2008 Rob Sykes <robs@users.sourceforge.net> |
| * |
| * 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 |
| */ |
| |
| /* |
| * 2-pole filters designed by Robert Bristow-Johnson <rbj@audioimagination.com> |
| * see http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt |
| * |
| * 1-pole filters based on code (c) 2000 Chris Bagwell <cbagwell@sprynet.com> |
| * Algorithms: Recursive single pole low/high pass filter |
| * Reference: The Scientist and Engineer's Guide to Digital Signal Processing |
| * |
| * low-pass: output[N] = input[N] * A + output[N-1] * B |
| * X = exp(-2.0 * pi * Fc) |
| * A = 1 - X |
| * B = X |
| * Fc = cutoff freq / sample rate |
| * |
| * Mimics an RC low-pass filter: |
| * |
| * ---/\/\/\/\-----------> |
| * | |
| * --- C |
| * --- |
| * | |
| * | |
| * V |
| * |
| * high-pass: output[N] = A0 * input[N] + A1 * input[N-1] + B1 * output[N-1] |
| * X = exp(-2.0 * pi * Fc) |
| * A0 = (1 + X) / 2 |
| * A1 = -(1 + X) / 2 |
| * B1 = X |
| * Fc = cutoff freq / sample rate |
| * |
| * Mimics an RC high-pass filter: |
| * |
| * || C |
| * ----||---------> |
| * || | |
| * < |
| * > R |
| * < |
| * | |
| * V |
| */ |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/ffmath.h" |
| #include "libavutil/opt.h" |
| #include "audio.h" |
| #include "avfilter.h" |
| #include "internal.h" |
| |
| enum FilterType { |
| biquad, |
| equalizer, |
| bass, |
| treble, |
| bandpass, |
| bandreject, |
| allpass, |
| highpass, |
| lowpass, |
| lowshelf, |
| highshelf, |
| }; |
| |
| enum WidthType { |
| NONE, |
| HERTZ, |
| OCTAVE, |
| QFACTOR, |
| SLOPE, |
| KHERTZ, |
| NB_WTYPE, |
| }; |
| |
| enum TransformType { |
| DI, |
| DII, |
| TDII, |
| LATT, |
| NB_TTYPE, |
| }; |
| |
| typedef struct ChanCache { |
| double i1, i2; |
| double o1, o2; |
| int clippings; |
| } ChanCache; |
| |
| typedef struct BiquadsContext { |
| const AVClass *class; |
| |
| enum FilterType filter_type; |
| int width_type; |
| int poles; |
| int csg; |
| int transform_type; |
| int precision; |
| |
| int bypass; |
| |
| double gain; |
| double frequency; |
| double width; |
| double mix; |
| uint64_t channels; |
| int normalize; |
| int order; |
| |
| double a0, a1, a2; |
| double b0, b1, b2; |
| |
| double oa0, oa1, oa2; |
| double ob0, ob1, ob2; |
| |
| ChanCache *cache; |
| int block_align; |
| |
| void (*filter)(struct BiquadsContext *s, const void *ibuf, void *obuf, int len, |
| double *i1, double *i2, double *o1, double *o2, |
| double b0, double b1, double b2, double a1, double a2, int *clippings, |
| int disabled); |
| } BiquadsContext; |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| BiquadsContext *s = ctx->priv; |
| AVFilterFormats *formats; |
| AVFilterChannelLayouts *layouts; |
| static const enum AVSampleFormat auto_sample_fmts[] = { |
| AV_SAMPLE_FMT_S16P, |
| AV_SAMPLE_FMT_S32P, |
| AV_SAMPLE_FMT_FLTP, |
| AV_SAMPLE_FMT_DBLP, |
| AV_SAMPLE_FMT_NONE |
| }; |
| enum AVSampleFormat sample_fmts[] = { |
| AV_SAMPLE_FMT_S16P, |
| AV_SAMPLE_FMT_NONE |
| }; |
| int ret; |
| |
| layouts = ff_all_channel_counts(); |
| if (!layouts) |
| return AVERROR(ENOMEM); |
| ret = ff_set_common_channel_layouts(ctx, layouts); |
| if (ret < 0) |
| return ret; |
| |
| switch (s->precision) { |
| case 0: |
| sample_fmts[0] = AV_SAMPLE_FMT_S16P; |
| formats = ff_make_format_list(sample_fmts); |
| break; |
| case 1: |
| sample_fmts[0] = AV_SAMPLE_FMT_S32P; |
| formats = ff_make_format_list(sample_fmts); |
| break; |
| case 2: |
| sample_fmts[0] = AV_SAMPLE_FMT_FLTP; |
| formats = ff_make_format_list(sample_fmts); |
| break; |
| case 3: |
| sample_fmts[0] = AV_SAMPLE_FMT_DBLP; |
| formats = ff_make_format_list(sample_fmts); |
| break; |
| default: |
| formats = ff_make_format_list(auto_sample_fmts); |
| break; |
| } |
| if (!formats) |
| return AVERROR(ENOMEM); |
| ret = ff_set_common_formats(ctx, formats); |
| if (ret < 0) |
| return ret; |
| |
| formats = ff_all_samplerates(); |
| if (!formats) |
| return AVERROR(ENOMEM); |
| return ff_set_common_samplerates(ctx, formats); |
| } |
| |
| #define BIQUAD_FILTER(name, type, min, max, need_clipping) \ |
| static void biquad_## name (BiquadsContext *s, \ |
| const void *input, void *output, int len, \ |
| double *in1, double *in2, \ |
| double *out1, double *out2, \ |
| double b0, double b1, double b2, \ |
| double a1, double a2, int *clippings, \ |
| int disabled) \ |
| { \ |
| const type *ibuf = input; \ |
| type *obuf = output; \ |
| double i1 = *in1; \ |
| double i2 = *in2; \ |
| double o1 = *out1; \ |
| double o2 = *out2; \ |
| double wet = s->mix; \ |
| double dry = 1. - wet; \ |
| double out; \ |
| int i; \ |
| a1 = -a1; \ |
| a2 = -a2; \ |
| \ |
| for (i = 0; i+1 < len; i++) { \ |
| o2 = i2 * b2 + i1 * b1 + ibuf[i] * b0 + o2 * a2 + o1 * a1; \ |
| i2 = ibuf[i]; \ |
| out = o2 * wet + i2 * dry; \ |
| if (disabled) { \ |
| obuf[i] = i2; \ |
| } else if (need_clipping && out < min) { \ |
| (*clippings)++; \ |
| obuf[i] = min; \ |
| } else if (need_clipping && out > max) { \ |
| (*clippings)++; \ |
| obuf[i] = max; \ |
| } else { \ |
| obuf[i] = out; \ |
| } \ |
| i++; \ |
| o1 = i1 * b2 + i2 * b1 + ibuf[i] * b0 + o1 * a2 + o2 * a1; \ |
| i1 = ibuf[i]; \ |
| out = o1 * wet + i1 * dry; \ |
| if (disabled) { \ |
| obuf[i] = i1; \ |
| } else if (need_clipping && out < min) { \ |
| (*clippings)++; \ |
| obuf[i] = min; \ |
| } else if (need_clipping && out > max) { \ |
| (*clippings)++; \ |
| obuf[i] = max; \ |
| } else { \ |
| obuf[i] = out; \ |
| } \ |
| } \ |
| if (i < len) { \ |
| double o0 = ibuf[i] * b0 + i1 * b1 + i2 * b2 + o1 * a1 + o2 * a2; \ |
| i2 = i1; \ |
| i1 = ibuf[i]; \ |
| o2 = o1; \ |
| o1 = o0; \ |
| out = o0 * wet + i1 * dry; \ |
| if (disabled) { \ |
| obuf[i] = i1; \ |
| } else if (need_clipping && out < min) { \ |
| (*clippings)++; \ |
| obuf[i] = min; \ |
| } else if (need_clipping && out > max) { \ |
| (*clippings)++; \ |
| obuf[i] = max; \ |
| } else { \ |
| obuf[i] = out; \ |
| } \ |
| } \ |
| *in1 = i1; \ |
| *in2 = i2; \ |
| *out1 = o1; \ |
| *out2 = o2; \ |
| } |
| |
| BIQUAD_FILTER(s16, int16_t, INT16_MIN, INT16_MAX, 1) |
| BIQUAD_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1) |
| BIQUAD_FILTER(flt, float, -1., 1., 0) |
| BIQUAD_FILTER(dbl, double, -1., 1., 0) |
| |
| #define BIQUAD_DII_FILTER(name, type, min, max, need_clipping) \ |
| static void biquad_dii_## name (BiquadsContext *s, \ |
| const void *input, void *output, int len, \ |
| double *z1, double *z2, \ |
| double *unused1, double *unused2, \ |
| double b0, double b1, double b2, \ |
| double a1, double a2, int *clippings, \ |
| int disabled) \ |
| { \ |
| const type *ibuf = input; \ |
| type *obuf = output; \ |
| double w1 = *z1; \ |
| double w2 = *z2; \ |
| double wet = s->mix; \ |
| double dry = 1. - wet; \ |
| double in, out, w0; \ |
| \ |
| a1 = -a1; \ |
| a2 = -a2; \ |
| \ |
| for (int i = 0; i < len; i++) { \ |
| in = ibuf[i]; \ |
| w0 = in + a1 * w1 + a2 * w2; \ |
| out = b0 * w0 + b1 * w1 + b2 * w2; \ |
| w2 = w1; \ |
| w1 = w0; \ |
| out = out * wet + in * dry; \ |
| if (disabled) { \ |
| obuf[i] = in; \ |
| } else if (need_clipping && out < min) { \ |
| (*clippings)++; \ |
| obuf[i] = min; \ |
| } else if (need_clipping && out > max) { \ |
| (*clippings)++; \ |
| obuf[i] = max; \ |
| } else { \ |
| obuf[i] = out; \ |
| } \ |
| } \ |
| *z1 = w1; \ |
| *z2 = w2; \ |
| } |
| |
| BIQUAD_DII_FILTER(s16, int16_t, INT16_MIN, INT16_MAX, 1) |
| BIQUAD_DII_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1) |
| BIQUAD_DII_FILTER(flt, float, -1., 1., 0) |
| BIQUAD_DII_FILTER(dbl, double, -1., 1., 0) |
| |
| #define BIQUAD_TDII_FILTER(name, type, min, max, need_clipping) \ |
| static void biquad_tdii_## name (BiquadsContext *s, \ |
| const void *input, void *output, int len, \ |
| double *z1, double *z2, \ |
| double *unused1, double *unused2, \ |
| double b0, double b1, double b2, \ |
| double a1, double a2, int *clippings, \ |
| int disabled) \ |
| { \ |
| const type *ibuf = input; \ |
| type *obuf = output; \ |
| double w1 = *z1; \ |
| double w2 = *z2; \ |
| double wet = s->mix; \ |
| double dry = 1. - wet; \ |
| double in, out; \ |
| \ |
| a1 = -a1; \ |
| a2 = -a2; \ |
| \ |
| for (int i = 0; i < len; i++) { \ |
| in = ibuf[i]; \ |
| out = b0 * in + w1; \ |
| w1 = b1 * in + w2 + a1 * out; \ |
| w2 = b2 * in + a2 * out; \ |
| out = out * wet + in * dry; \ |
| if (disabled) { \ |
| obuf[i] = in; \ |
| } else if (need_clipping && out < min) { \ |
| (*clippings)++; \ |
| obuf[i] = min; \ |
| } else if (need_clipping && out > max) { \ |
| (*clippings)++; \ |
| obuf[i] = max; \ |
| } else { \ |
| obuf[i] = out; \ |
| } \ |
| } \ |
| *z1 = w1; \ |
| *z2 = w2; \ |
| } |
| |
| BIQUAD_TDII_FILTER(s16, int16_t, INT16_MIN, INT16_MAX, 1) |
| BIQUAD_TDII_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1) |
| BIQUAD_TDII_FILTER(flt, float, -1., 1., 0) |
| BIQUAD_TDII_FILTER(dbl, double, -1., 1., 0) |
| |
| #define BIQUAD_LATT_FILTER(name, type, min, max, need_clipping) \ |
| static void biquad_latt_## name (BiquadsContext *s, \ |
| const void *input, void *output, int len, \ |
| double *z1, double *z2, \ |
| double *unused1, double *unused2, \ |
| double v0, double v1, double v2, \ |
| double k0, double k1, int *clippings, \ |
| int disabled) \ |
| { \ |
| const type *ibuf = input; \ |
| type *obuf = output; \ |
| double s0 = *z1; \ |
| double s1 = *z2; \ |
| double wet = s->mix; \ |
| double dry = 1. - wet; \ |
| double in, out; \ |
| double t0, t1; \ |
| \ |
| for (int i = 0; i < len; i++) { \ |
| out = 0.; \ |
| in = ibuf[i]; \ |
| t0 = in - k1 * s0; \ |
| t1 = t0 * k1 + s0; \ |
| out += t1 * v2; \ |
| \ |
| t0 = t0 - k0 * s1; \ |
| t1 = t0 * k0 + s1; \ |
| out += t1 * v1; \ |
| \ |
| out += t0 * v0; \ |
| s0 = t1; \ |
| s1 = t0; \ |
| \ |
| out = out * wet + in * dry; \ |
| if (disabled) { \ |
| obuf[i] = in; \ |
| } else if (need_clipping && out < min) { \ |
| (*clippings)++; \ |
| obuf[i] = min; \ |
| } else if (need_clipping && out > max) { \ |
| (*clippings)++; \ |
| obuf[i] = max; \ |
| } else { \ |
| obuf[i] = out; \ |
| } \ |
| } \ |
| *z1 = s0; \ |
| *z2 = s1; \ |
| } |
| |
| BIQUAD_LATT_FILTER(s16, int16_t, INT16_MIN, INT16_MAX, 1) |
| BIQUAD_LATT_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1) |
| BIQUAD_LATT_FILTER(flt, float, -1., 1., 0) |
| BIQUAD_LATT_FILTER(dbl, double, -1., 1., 0) |
| |
| static void convert_dir2latt(BiquadsContext *s) |
| { |
| double k0, k1, v0, v1, v2; |
| |
| k1 = s->a2; |
| k0 = s->a1 / (1. + k1); |
| v2 = s->b2; |
| v1 = s->b1 - v2 * s->a1; |
| v0 = s->b0 - v1 * k0 - v2 * k1; |
| |
| s->a1 = k0; |
| s->a2 = k1; |
| s->b0 = v0; |
| s->b1 = v1; |
| s->b2 = v2; |
| } |
| |
| static int config_filter(AVFilterLink *outlink, int reset) |
| { |
| AVFilterContext *ctx = outlink->src; |
| BiquadsContext *s = ctx->priv; |
| AVFilterLink *inlink = ctx->inputs[0]; |
| double A = ff_exp10(s->gain / 40); |
| double w0 = 2 * M_PI * s->frequency / inlink->sample_rate; |
| double K = tan(w0 / 2.); |
| double alpha, beta; |
| |
| s->bypass = (((w0 > M_PI || w0 <= 0.) && reset) || (s->width <= 0.)) && (s->filter_type != biquad); |
| if (s->bypass) { |
| av_log(ctx, AV_LOG_WARNING, "Invalid frequency and/or width!\n"); |
| return 0; |
| } |
| |
| if ((w0 > M_PI || w0 <= 0.) && (s->filter_type != biquad)) |
| return AVERROR(EINVAL); |
| |
| switch (s->width_type) { |
| case NONE: |
| alpha = 0.0; |
| break; |
| case HERTZ: |
| alpha = sin(w0) / (2 * s->frequency / s->width); |
| break; |
| case KHERTZ: |
| alpha = sin(w0) / (2 * s->frequency / (s->width * 1000)); |
| break; |
| case OCTAVE: |
| alpha = sin(w0) * sinh(log(2.) / 2 * s->width * w0 / sin(w0)); |
| break; |
| case QFACTOR: |
| alpha = sin(w0) / (2 * s->width); |
| break; |
| case SLOPE: |
| alpha = sin(w0) / 2 * sqrt((A + 1 / A) * (1 / s->width - 1) + 2); |
| break; |
| default: |
| av_assert0(0); |
| } |
| |
| beta = 2 * sqrt(A); |
| |
| switch (s->filter_type) { |
| case biquad: |
| s->a0 = s->oa0; |
| s->a1 = s->oa1; |
| s->a2 = s->oa2; |
| s->b0 = s->ob0; |
| s->b1 = s->ob1; |
| s->b2 = s->ob2; |
| break; |
| case equalizer: |
| s->a0 = 1 + alpha / A; |
| s->a1 = -2 * cos(w0); |
| s->a2 = 1 - alpha / A; |
| s->b0 = 1 + alpha * A; |
| s->b1 = -2 * cos(w0); |
| s->b2 = 1 - alpha * A; |
| break; |
| case bass: |
| beta = sqrt((A * A + 1) - (A - 1) * (A - 1)); |
| case lowshelf: |
| s->a0 = (A + 1) + (A - 1) * cos(w0) + beta * alpha; |
| s->a1 = -2 * ((A - 1) + (A + 1) * cos(w0)); |
| s->a2 = (A + 1) + (A - 1) * cos(w0) - beta * alpha; |
| s->b0 = A * ((A + 1) - (A - 1) * cos(w0) + beta * alpha); |
| s->b1 = 2 * A * ((A - 1) - (A + 1) * cos(w0)); |
| s->b2 = A * ((A + 1) - (A - 1) * cos(w0) - beta * alpha); |
| break; |
| case treble: |
| beta = sqrt((A * A + 1) - (A - 1) * (A - 1)); |
| case highshelf: |
| s->a0 = (A + 1) - (A - 1) * cos(w0) + beta * alpha; |
| s->a1 = 2 * ((A - 1) - (A + 1) * cos(w0)); |
| s->a2 = (A + 1) - (A - 1) * cos(w0) - beta * alpha; |
| s->b0 = A * ((A + 1) + (A - 1) * cos(w0) + beta * alpha); |
| s->b1 =-2 * A * ((A - 1) + (A + 1) * cos(w0)); |
| s->b2 = A * ((A + 1) + (A - 1) * cos(w0) - beta * alpha); |
| break; |
| case bandpass: |
| if (s->csg) { |
| s->a0 = 1 + alpha; |
| s->a1 = -2 * cos(w0); |
| s->a2 = 1 - alpha; |
| s->b0 = sin(w0) / 2; |
| s->b1 = 0; |
| s->b2 = -sin(w0) / 2; |
| } else { |
| s->a0 = 1 + alpha; |
| s->a1 = -2 * cos(w0); |
| s->a2 = 1 - alpha; |
| s->b0 = alpha; |
| s->b1 = 0; |
| s->b2 = -alpha; |
| } |
| break; |
| case bandreject: |
| s->a0 = 1 + alpha; |
| s->a1 = -2 * cos(w0); |
| s->a2 = 1 - alpha; |
| s->b0 = 1; |
| s->b1 = -2 * cos(w0); |
| s->b2 = 1; |
| break; |
| case lowpass: |
| if (s->poles == 1) { |
| s->a0 = 1; |
| s->a1 = -exp(-w0); |
| s->a2 = 0; |
| s->b0 = 1 + s->a1; |
| s->b1 = 0; |
| s->b2 = 0; |
| } else { |
| s->a0 = 1 + alpha; |
| s->a1 = -2 * cos(w0); |
| s->a2 = 1 - alpha; |
| s->b0 = (1 - cos(w0)) / 2; |
| s->b1 = 1 - cos(w0); |
| s->b2 = (1 - cos(w0)) / 2; |
| } |
| break; |
| case highpass: |
| if (s->poles == 1) { |
| s->a0 = 1; |
| s->a1 = -exp(-w0); |
| s->a2 = 0; |
| s->b0 = (1 - s->a1) / 2; |
| s->b1 = -s->b0; |
| s->b2 = 0; |
| } else { |
| s->a0 = 1 + alpha; |
| s->a1 = -2 * cos(w0); |
| s->a2 = 1 - alpha; |
| s->b0 = (1 + cos(w0)) / 2; |
| s->b1 = -(1 + cos(w0)); |
| s->b2 = (1 + cos(w0)) / 2; |
| } |
| break; |
| case allpass: |
| switch (s->order) { |
| case 1: |
| s->a0 = 1.; |
| s->a1 = -(1. - K) / (1. + K); |
| s->a2 = 0.; |
| s->b0 = s->a1; |
| s->b1 = s->a0; |
| s->b2 = 0.; |
| break; |
| case 2: |
| s->a0 = 1 + alpha; |
| s->a1 = -2 * cos(w0); |
| s->a2 = 1 - alpha; |
| s->b0 = 1 - alpha; |
| s->b1 = -2 * cos(w0); |
| s->b2 = 1 + alpha; |
| break; |
| } |
| break; |
| default: |
| av_assert0(0); |
| } |
| |
| av_log(ctx, AV_LOG_VERBOSE, "a=%f %f %f:b=%f %f %f\n", s->a0, s->a1, s->a2, s->b0, s->b1, s->b2); |
| |
| s->a1 /= s->a0; |
| s->a2 /= s->a0; |
| s->b0 /= s->a0; |
| s->b1 /= s->a0; |
| s->b2 /= s->a0; |
| s->a0 /= s->a0; |
| |
| if (s->normalize && fabs(s->b0 + s->b1 + s->b2) > 1e-6) { |
| double factor = (s->a0 + s->a1 + s->a2) / (s->b0 + s->b1 + s->b2); |
| |
| s->b0 *= factor; |
| s->b1 *= factor; |
| s->b2 *= factor; |
| } |
| |
| s->cache = av_realloc_f(s->cache, sizeof(ChanCache), inlink->channels); |
| if (!s->cache) |
| return AVERROR(ENOMEM); |
| if (reset) |
| memset(s->cache, 0, sizeof(ChanCache) * inlink->channels); |
| |
| switch (s->transform_type) { |
| case DI: |
| switch (inlink->format) { |
| case AV_SAMPLE_FMT_S16P: |
| s->filter = biquad_s16; |
| break; |
| case AV_SAMPLE_FMT_S32P: |
| s->filter = biquad_s32; |
| break; |
| case AV_SAMPLE_FMT_FLTP: |
| s->filter = biquad_flt; |
| break; |
| case AV_SAMPLE_FMT_DBLP: |
| s->filter = biquad_dbl; |
| break; |
| default: av_assert0(0); |
| } |
| break; |
| case DII: |
| switch (inlink->format) { |
| case AV_SAMPLE_FMT_S16P: |
| s->filter = biquad_dii_s16; |
| break; |
| case AV_SAMPLE_FMT_S32P: |
| s->filter = biquad_dii_s32; |
| break; |
| case AV_SAMPLE_FMT_FLTP: |
| s->filter = biquad_dii_flt; |
| break; |
| case AV_SAMPLE_FMT_DBLP: |
| s->filter = biquad_dii_dbl; |
| break; |
| default: av_assert0(0); |
| } |
| break; |
| case TDII: |
| switch (inlink->format) { |
| case AV_SAMPLE_FMT_S16P: |
| s->filter = biquad_tdii_s16; |
| break; |
| case AV_SAMPLE_FMT_S32P: |
| s->filter = biquad_tdii_s32; |
| break; |
| case AV_SAMPLE_FMT_FLTP: |
| s->filter = biquad_tdii_flt; |
| break; |
| case AV_SAMPLE_FMT_DBLP: |
| s->filter = biquad_tdii_dbl; |
| break; |
| default: av_assert0(0); |
| } |
| break; |
| case LATT: |
| switch (inlink->format) { |
| case AV_SAMPLE_FMT_S16P: |
| s->filter = biquad_latt_s16; |
| break; |
| case AV_SAMPLE_FMT_S32P: |
| s->filter = biquad_latt_s32; |
| break; |
| case AV_SAMPLE_FMT_FLTP: |
| s->filter = biquad_latt_flt; |
| break; |
| case AV_SAMPLE_FMT_DBLP: |
| s->filter = biquad_latt_dbl; |
| break; |
| default: av_assert0(0); |
| } |
| break; |
| default: |
| av_assert0(0); |
| } |
| |
| s->block_align = av_get_bytes_per_sample(inlink->format); |
| |
| if (s->transform_type == LATT) |
| convert_dir2latt(s); |
| |
| return 0; |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| return config_filter(outlink, 1); |
| } |
| |
| typedef struct ThreadData { |
| AVFrame *in, *out; |
| } ThreadData; |
| |
| static int filter_channel(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) |
| { |
| AVFilterLink *inlink = ctx->inputs[0]; |
| ThreadData *td = arg; |
| AVFrame *buf = td->in; |
| AVFrame *out_buf = td->out; |
| BiquadsContext *s = ctx->priv; |
| const int start = (buf->channels * jobnr) / nb_jobs; |
| const int end = (buf->channels * (jobnr+1)) / nb_jobs; |
| int ch; |
| |
| for (ch = start; ch < end; ch++) { |
| if (!((av_channel_layout_extract_channel(inlink->channel_layout, ch) & s->channels))) { |
| if (buf != out_buf) |
| memcpy(out_buf->extended_data[ch], buf->extended_data[ch], |
| buf->nb_samples * s->block_align); |
| continue; |
| } |
| |
| s->filter(s, buf->extended_data[ch], out_buf->extended_data[ch], buf->nb_samples, |
| &s->cache[ch].i1, &s->cache[ch].i2, &s->cache[ch].o1, &s->cache[ch].o2, |
| s->b0, s->b1, s->b2, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled); |
| } |
| |
| return 0; |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *buf) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| BiquadsContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| AVFrame *out_buf; |
| ThreadData td; |
| int ch; |
| |
| if (s->bypass) |
| return ff_filter_frame(outlink, buf); |
| |
| if (av_frame_is_writable(buf)) { |
| out_buf = buf; |
| } else { |
| out_buf = ff_get_audio_buffer(outlink, buf->nb_samples); |
| if (!out_buf) { |
| av_frame_free(&buf); |
| return AVERROR(ENOMEM); |
| } |
| av_frame_copy_props(out_buf, buf); |
| } |
| |
| td.in = buf; |
| td.out = out_buf; |
| ctx->internal->execute(ctx, filter_channel, &td, NULL, FFMIN(outlink->channels, ff_filter_get_nb_threads(ctx))); |
| |
| for (ch = 0; ch < outlink->channels; ch++) { |
| if (s->cache[ch].clippings > 0) |
| av_log(ctx, AV_LOG_WARNING, "Channel %d clipping %d times. Please reduce gain.\n", |
| ch, s->cache[ch].clippings); |
| s->cache[ch].clippings = 0; |
| } |
| |
| if (buf != out_buf) |
| av_frame_free(&buf); |
| |
| return ff_filter_frame(outlink, out_buf); |
| } |
| |
| static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, |
| char *res, int res_len, int flags) |
| { |
| AVFilterLink *outlink = ctx->outputs[0]; |
| int ret; |
| |
| ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags); |
| if (ret < 0) |
| return ret; |
| |
| return config_filter(outlink, 0); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| BiquadsContext *s = ctx->priv; |
| |
| av_freep(&s->cache); |
| } |
| |
| static const AVFilterPad inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_AUDIO, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_AUDIO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| #define OFFSET(x) offsetof(BiquadsContext, x) |
| #define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM |
| #define AF AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
| |
| #define DEFINE_BIQUAD_FILTER(name_, description_) \ |
| AVFILTER_DEFINE_CLASS(name_); \ |
| static av_cold int name_##_init(AVFilterContext *ctx) \ |
| { \ |
| BiquadsContext *s = ctx->priv; \ |
| s->class = &name_##_class; \ |
| s->filter_type = name_; \ |
| return 0; \ |
| } \ |
| \ |
| AVFilter ff_af_##name_ = { \ |
| .name = #name_, \ |
| .description = NULL_IF_CONFIG_SMALL(description_), \ |
| .priv_size = sizeof(BiquadsContext), \ |
| .init = name_##_init, \ |
| .uninit = uninit, \ |
| .query_formats = query_formats, \ |
| .inputs = inputs, \ |
| .outputs = outputs, \ |
| .priv_class = &name_##_class, \ |
| .process_command = process_command, \ |
| .flags = AVFILTER_FLAG_SLICE_THREADS | AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, \ |
| } |
| |
| #if CONFIG_EQUALIZER_FILTER |
| static const AVOption equalizer_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=0}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set band-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 99999, FLAGS}, |
| {"w", "set band-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 99999, FLAGS}, |
| {"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(equalizer, "Apply two-pole peaking equalization (EQ) filter."); |
| #endif /* CONFIG_EQUALIZER_FILTER */ |
| #if CONFIG_BASS_FILTER |
| static const AVOption bass_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(bass, "Boost or cut lower frequencies."); |
| #endif /* CONFIG_BASS_FILTER */ |
| #if CONFIG_TREBLE_FILTER |
| static const AVOption treble_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(treble, "Boost or cut upper frequencies."); |
| #endif /* CONFIG_TREBLE_FILTER */ |
| #if CONFIG_BANDPASS_FILTER |
| static const AVOption bandpass_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set band-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"w", "set band-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"csg", "use constant skirt gain", OFFSET(csg), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(bandpass, "Apply a two-pole Butterworth band-pass filter."); |
| #endif /* CONFIG_BANDPASS_FILTER */ |
| #if CONFIG_BANDREJECT_FILTER |
| static const AVOption bandreject_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set band-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"w", "set band-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(bandreject, "Apply a two-pole Butterworth band-reject filter."); |
| #endif /* CONFIG_BANDREJECT_FILTER */ |
| #if CONFIG_LOWPASS_FILTER |
| static const AVOption lowpass_options[] = { |
| {"frequency", "set frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=500}, 0, 999999, FLAGS}, |
| {"f", "set frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=500}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.707}, 0, 99999, FLAGS}, |
| {"w", "set width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.707}, 0, 99999, FLAGS}, |
| {"poles", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF}, |
| {"p", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(lowpass, "Apply a low-pass filter with 3dB point frequency."); |
| #endif /* CONFIG_LOWPASS_FILTER */ |
| #if CONFIG_HIGHPASS_FILTER |
| static const AVOption highpass_options[] = { |
| {"frequency", "set frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"f", "set frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.707}, 0, 99999, FLAGS}, |
| {"w", "set width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.707}, 0, 99999, FLAGS}, |
| {"poles", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF}, |
| {"p", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(highpass, "Apply a high-pass filter with 3dB point frequency."); |
| #endif /* CONFIG_HIGHPASS_FILTER */ |
| #if CONFIG_ALLPASS_FILTER |
| static const AVOption allpass_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=HERTZ}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=HERTZ}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set filter-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=707.1}, 0, 99999, FLAGS}, |
| {"w", "set filter-width", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=707.1}, 0, 99999, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"order", "set filter order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, FLAGS}, |
| {"o", "set filter order", OFFSET(order), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(allpass, "Apply a two-pole all-pass filter."); |
| #endif /* CONFIG_ALLPASS_FILTER */ |
| #if CONFIG_LOWSHELF_FILTER |
| static const AVOption lowshelf_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(lowshelf, "Apply a low shelf filter."); |
| #endif /* CONFIG_LOWSHELF_FILTER */ |
| #if CONFIG_HIGHSHELF_FILTER |
| static const AVOption highshelf_options[] = { |
| {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS}, |
| {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"}, |
| {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"}, |
| {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"}, |
| {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"}, |
| {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"}, |
| {"width", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS}, |
| {"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(highshelf, "Apply a high shelf filter."); |
| #endif /* CONFIG_HIGHSHELF_FILTER */ |
| #if CONFIG_BIQUAD_FILTER |
| static const AVOption biquad_options[] = { |
| {"a0", NULL, OFFSET(oa0), AV_OPT_TYPE_DOUBLE, {.dbl=1}, INT32_MIN, INT32_MAX, FLAGS}, |
| {"a1", NULL, OFFSET(oa1), AV_OPT_TYPE_DOUBLE, {.dbl=0}, INT32_MIN, INT32_MAX, FLAGS}, |
| {"a2", NULL, OFFSET(oa2), AV_OPT_TYPE_DOUBLE, {.dbl=0}, INT32_MIN, INT32_MAX, FLAGS}, |
| {"b0", NULL, OFFSET(ob0), AV_OPT_TYPE_DOUBLE, {.dbl=0}, INT32_MIN, INT32_MAX, FLAGS}, |
| {"b1", NULL, OFFSET(ob1), AV_OPT_TYPE_DOUBLE, {.dbl=0}, INT32_MIN, INT32_MAX, FLAGS}, |
| {"b2", NULL, OFFSET(ob2), AV_OPT_TYPE_DOUBLE, {.dbl=0}, INT32_MIN, INT32_MAX, FLAGS}, |
| {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}, |
| {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS}, |
| {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"}, |
| {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"}, |
| {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"}, |
| {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"}, |
| {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"}, |
| {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"}, |
| {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"}, |
| {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"}, |
| {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"}, |
| {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"}, |
| {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"}, |
| {NULL} |
| }; |
| |
| DEFINE_BIQUAD_FILTER(biquad, "Apply a biquad IIR filter with the given coefficients."); |
| #endif /* CONFIG_BIQUAD_FILTER */ |
