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https://github.com/FFmpeg/FFmpeg.git
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avfilter/af_biquads: add zdf transform type
This commit is contained in:
Paul B Mahol
parent
8016219472
commit
cbc1b8adad
@ -2054,6 +2054,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -3484,6 +3485,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -3580,6 +3582,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -3686,6 +3689,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -3777,6 +3781,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -4585,6 +4590,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -5095,6 +5101,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -5454,6 +5461,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -6699,6 +6707,7 @@ Set transform type of IIR filter.
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@item tdii
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@item latt
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@item svf
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@item zdf
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@end table
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@item precision, r
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@ -104,6 +104,7 @@ enum TransformType {
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TDII,
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LATT,
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SVF,
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ZDF,
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NB_TTYPE,
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};
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@ -150,7 +151,7 @@ typedef struct BiquadsContext {
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void (*filter)(struct BiquadsContext *s, const void *ibuf, void *obuf, int len,
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double *i1, double *i2, double *o1, double *o2,
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double b0, double b1, double b2, double a1, double a2, int *clippings,
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double b0, double b1, double b2, double a0, double a1, double a2, int *clippings,
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int disabled);
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} BiquadsContext;
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@ -203,7 +204,7 @@ static void biquad_## name (BiquadsContext *s, \
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double *in1, double *in2, \
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double *out1, double *out2, \
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double b0, double b1, double b2, \
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double a1, double a2, int *clippings, \
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double a0, double a1, double a2, int *clippings, \
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int disabled) \
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{ \
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const type *ibuf = input; \
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@ -286,7 +287,7 @@ static void biquad_dii_## name (BiquadsContext *s, \
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double *z1, double *z2, \
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double *unused1, double *unused2, \
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double b0, double b1, double b2, \
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double a1, double a2, int *clippings, \
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double a0, double a1, double a2, int *clippings, \
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int disabled) \
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{ \
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const type *ibuf = input; \
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@ -334,7 +335,7 @@ static void biquad_tdi_## name (BiquadsContext *s, \
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double *z1, double *z2, \
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double *z3, double *z4, \
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double b0, double b1, double b2, \
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double a1, double a2, int *clippings, \
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double a0, double a1, double a2, int *clippings, \
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int disabled) \
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{ \
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const type *ibuf = input; \
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@ -390,7 +391,7 @@ static void biquad_tdii_## name (BiquadsContext *s, \
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double *z1, double *z2, \
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double *unused1, double *unused2, \
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double b0, double b1, double b2, \
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double a1, double a2, int *clippings, \
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double a0, double a1, double a2, int *clippings, \
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int disabled) \
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{ \
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const type *ibuf = input; \
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@ -437,7 +438,8 @@ static void biquad_latt_## name (BiquadsContext *s, \
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double *z1, double *z2, \
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double *unused1, double *unused2, \
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double v0, double v1, double v2, \
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double k0, double k1, int *clippings, \
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double unused, double k0, double k1, \
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int *clippings, \
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int disabled) \
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{ \
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const type *ibuf = input; \
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@ -492,7 +494,7 @@ static void biquad_svf_## name (BiquadsContext *s, \
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double *y0, double *y1, \
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double *unused1, double *unused2, \
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double b0, double b1, double b2, \
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double a1, double a2, int *clippings, \
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double a0, double a1, double a2, int *clippings, \
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int disabled) \
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{ \
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const type *ibuf = input; \
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@ -534,6 +536,56 @@ BIQUAD_SVF_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1)
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BIQUAD_SVF_FILTER(flt, float, -1., 1., 0)
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BIQUAD_SVF_FILTER(dbl, double, -1., 1., 0)
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#define BIQUAD_ZDF_FILTER(name, type, min, max, need_clipping) \
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static void biquad_zdf_## name (BiquadsContext *s, \
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const void *input, void *output, int len, \
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double *y0, double *y1, \
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double *unused1, double *unused2, \
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double m0, double m1, double m2, \
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double a0, double a1, double a2, int *clippings, \
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int disabled) \
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{ \
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const type *ibuf = input; \
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type *obuf = output; \
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double b0 = *y0; \
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double b1 = *y1; \
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double wet = s->mix; \
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double dry = 1. - wet; \
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double out; \
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\
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for (int i = 0; i < len; i++) { \
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const double in = ibuf[i]; \
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const double v0 = in; \
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const double v3 = v0 - b1; \
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const double v1 = a0 * b0 + a1 * v3; \
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const double v2 = b1 + a1 * b0 + a2 * v3; \
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\
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b0 = 2. * v1 - b0; \
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b1 = 2. * v2 - b1; \
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\
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out = m0 * v0 + m1 * v1 + m2 * v2; \
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out = out * wet + in * dry; \
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if (disabled) { \
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obuf[i] = in; \
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} else if (need_clipping && out < min) { \
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(*clippings)++; \
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obuf[i] = min; \
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} else if (need_clipping && out > max) { \
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(*clippings)++; \
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obuf[i] = max; \
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} else { \
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obuf[i] = out; \
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} \
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} \
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*y0 = b0; \
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*y1 = b1; \
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}
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BIQUAD_ZDF_FILTER(s16, int16_t, INT16_MIN, INT16_MAX, 1)
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BIQUAD_ZDF_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1)
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BIQUAD_ZDF_FILTER(flt, float, -1., 1., 0)
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BIQUAD_ZDF_FILTER(dbl, double, -1., 1., 0)
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static void convert_dir2latt(BiquadsContext *s)
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{
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double k0, k1, v0, v1, v2;
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@ -569,6 +621,154 @@ static void convert_dir2svf(BiquadsContext *s)
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s->b2 = b[2];
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}
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static double convert_width2qfactor(double width,
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double frequency,
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double gain,
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double sample_rate,
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int width_type)
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{
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double w0 = 2. * M_PI * frequency / sample_rate;
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double A = ff_exp10(gain / 40.);
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double ret;
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switch (width_type) {
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case NONE:
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case QFACTOR:
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ret = width;
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break;
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case HERTZ:
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ret = frequency / width;
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break;
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case KHERTZ:
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ret = frequency / (width * 1000.);
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break;
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case OCTAVE:
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ret = 1. / (2. * sinh(log(2.) / 2. * width * w0 / sin(w0)));
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break;
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case SLOPE:
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ret = 1. / sqrt((A + 1. / A) * (1. / width - 1.) + 2.);
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break;
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default:
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av_assert0(0);
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break;
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}
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return ret;
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}
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static void convert_dir2zdf(BiquadsContext *s, int sample_rate)
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{
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double Q = convert_width2qfactor(s->width, s->frequency, s->gain, sample_rate, s->width_type);
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double g, k, A;
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double a[3];
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double m[3];
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switch (s->filter_type) {
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case biquad:
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a[0] = s->oa0;
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a[1] = s->oa1;
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a[2] = s->oa2;
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m[0] = s->ob0;
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m[1] = s->ob1;
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m[2] = s->ob2;
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break;
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case equalizer:
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A = ff_exp10(s->gain / 40.);
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g = tan(M_PI * s->frequency / sample_rate);
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k = 1. / (Q * A);
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = 1.;
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m[1] = k * (A * A - 1.);
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m[2] = 0.;
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break;
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case bass:
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case lowshelf:
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A = ff_exp10(s->gain / 40.);
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g = tan(M_PI * s->frequency / sample_rate) / sqrt(A);
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k = 1. / (Q * A);
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = 1.;
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m[1] = k * (A - 1.);
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m[2] = A * A - 1.;
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break;
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case treble:
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case highshelf:
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A = ff_exp10(s->gain / 40.);
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g = tan(M_PI * s->frequency / sample_rate) / sqrt(A);
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k = 1. / (Q * A);
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = A * A;
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m[1] = k * (1. - A) * A;
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m[2] = 1. - A * A;
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break;
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case bandpass:
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g = tan(M_PI * s->frequency / sample_rate);
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k = 1. / Q;
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = 0.;
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m[1] = s->csg ? 1. : 2.;
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m[2] = 0.;
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break;
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case bandreject:
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g = tan(M_PI * s->frequency / sample_rate);
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k = 1. / Q;
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = 1.;
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m[1] = -k;
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m[2] = 0.;
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break;
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case lowpass:
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g = tan(M_PI * s->frequency / sample_rate);
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k = 1. / Q;
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = 0.;
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m[1] = 0.;
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m[2] = 1.;
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break;
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case highpass:
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g = tan(M_PI * s->frequency / sample_rate);
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k = 1. / Q;
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = 1.;
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m[1] = -k;
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m[2] = -1.;
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break;
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case allpass:
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g = tan(M_PI * s->frequency / sample_rate);
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k = 1. / Q;
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a[0] = 1. / (1. + g * (g + k));
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a[1] = g * a[0];
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a[2] = g * a[1];
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m[0] = 1.;
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m[1] = -2. * k;
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m[2] = 0.;
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break;
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default:
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av_assert0(0);
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}
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s->a0 = a[0];
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s->a1 = a[1];
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s->a2 = a[2];
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s->b0 = m[0];
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s->b1 = m[1];
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s->b2 = m[2];
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}
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static int config_filter(AVFilterLink *outlink, int reset)
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{
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AVFilterContext *ctx = outlink->src;
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@ -902,6 +1102,23 @@ static int config_filter(AVFilterLink *outlink, int reset)
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default: av_assert0(0);
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}
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break;
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case ZDF:
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switch (inlink->format) {
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case AV_SAMPLE_FMT_S16P:
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s->filter = biquad_zdf_s16;
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break;
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case AV_SAMPLE_FMT_S32P:
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s->filter = biquad_zdf_s32;
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break;
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case AV_SAMPLE_FMT_FLTP:
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s->filter = biquad_zdf_flt;
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break;
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case AV_SAMPLE_FMT_DBLP:
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s->filter = biquad_zdf_dbl;
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break;
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default: av_assert0(0);
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}
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break;
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default:
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av_assert0(0);
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}
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@ -912,6 +1129,8 @@ static int config_filter(AVFilterLink *outlink, int reset)
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convert_dir2latt(s);
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else if (s->transform_type == SVF)
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convert_dir2svf(s);
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else if (s->transform_type == ZDF)
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convert_dir2zdf(s, inlink->sample_rate);
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return 0;
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}
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@ -985,13 +1204,13 @@ static int filter_channel(AVFilterContext *ctx, void *arg, int jobnr, int nb_job
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if (!s->block_samples) {
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s->filter(s, buf->extended_data[ch], out_buf->extended_data[ch], buf->nb_samples,
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&s->cache[ch].i1, &s->cache[ch].i2, &s->cache[ch].o1, &s->cache[ch].o2,
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s->b0, s->b1, s->b2, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
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s->b0, s->b1, s->b2, s->a0, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
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} else {
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memcpy(s->block[0]->extended_data[ch] + s->block_align * s->block_samples, buf->extended_data[ch],
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buf->nb_samples * s->block_align);
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s->filter(s, s->block[0]->extended_data[ch], s->block[1]->extended_data[ch], s->block_samples,
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&s->cache[ch].i1, &s->cache[ch].i2, &s->cache[ch].o1, &s->cache[ch].o2,
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s->b0, s->b1, s->b2, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
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s->b0, s->b1, s->b2, s->a0, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
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s->cache[ch].ri1 = s->cache[ch].i1;
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s->cache[ch].ri2 = s->cache[ch].i2;
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s->cache[ch].ro1 = s->cache[ch].o1;
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@ -1000,7 +1219,7 @@ static int filter_channel(AVFilterContext *ctx, void *arg, int jobnr, int nb_job
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s->block[1]->extended_data[ch] + s->block_samples * s->block_align,
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s->block_samples,
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&s->cache[ch].ri1, &s->cache[ch].ri2, &s->cache[ch].ro1, &s->cache[ch].ro2,
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s->b0, s->b1, s->b2, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
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s->b0, s->b1, s->b2, s->a0, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
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reverse_samples(s->block[2], s->block[1], ch, 0, 0, s->block_samples * 2);
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s->cache[ch].ri1 = 0.;
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s->cache[ch].ri2 = 0.;
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@ -1008,7 +1227,7 @@ static int filter_channel(AVFilterContext *ctx, void *arg, int jobnr, int nb_job
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s->cache[ch].ro2 = 0.;
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s->filter(s, s->block[2]->extended_data[ch], s->block[2]->extended_data[ch], s->block[2]->nb_samples,
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&s->cache[ch].ri1, &s->cache[ch].ri2, &s->cache[ch].ro1, &s->cache[ch].ro2,
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s->b0, s->b1, s->b2, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
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s->b0, s->b1, s->b2, s->a0, s->a1, s->a2, &s->cache[ch].clippings, ctx->is_disabled);
|
||||
reverse_samples(out_buf, s->block[2], ch, 0, s->block_samples, out_buf->nb_samples);
|
||||
memmove(s->block[0]->extended_data[ch], s->block[0]->extended_data[ch] + s->block_align * s->block_samples,
|
||||
s->block_samples * s->block_align);
|
||||
@ -1197,6 +1416,7 @@ static const AVOption equalizer_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1242,6 +1462,7 @@ static const AVOption bass_lowshelf_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1294,6 +1515,7 @@ static const AVOption treble_highshelf_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1345,6 +1567,7 @@ static const AVOption bandpass_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1386,6 +1609,7 @@ static const AVOption bandreject_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1429,6 +1653,7 @@ static const AVOption lowpass_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1472,6 +1697,7 @@ static const AVOption highpass_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1515,6 +1741,7 @@ static const AVOption allpass_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
@ -1549,6 +1776,7 @@ static const AVOption biquad_options[] = {
|
||||
{"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"},
|
||||
{"svf", "state variable filter form", 0, AV_OPT_TYPE_CONST, {.i64=SVF}, 0, 0, AF, "transform_type"},
|
||||
{"zdf", "zero-delay filter form", 0, AV_OPT_TYPE_CONST, {.i64=ZDF}, 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"},
|
||||
|
||||
Loading…
Reference in New Issue
Block a user