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avfilter/af_biquads: add different transform types
This commit is contained in:
Paul B Mahol
parent
999f5160c4
commit
2459c3f8f0
@ -1573,6 +1573,14 @@ Enabling it will normalize magnitude response at DC to 0dB.
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@item order, o
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Set the filter order, can be 1 or 2. Default is 2.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Commands
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@ -2693,6 +2701,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Commands
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@ -2756,6 +2772,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Commands
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@ -2826,6 +2850,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Commands
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@ -2884,6 +2916,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@section bs2b
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@ -3607,6 +3647,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Examples
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@ -4084,6 +4132,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Commands
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@ -4410,6 +4466,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Examples
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@ -5530,6 +5594,14 @@ Specify which channels to filter, by default all available are filtered.
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@item normalize, n
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Normalize biquad coefficients, by default is disabled.
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Enabling it will normalize magnitude response at DC to 0dB.
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@item transform, a
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Set transform type of IIR filter.
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@table @option
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@item di
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@item dii
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@item tdii
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@end table
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@end table
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@subsection Commands
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@ -93,6 +93,13 @@ enum WidthType {
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NB_WTYPE,
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};
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enum TransformType {
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DI,
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DII,
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TDII,
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NB_TTYPE,
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};
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typedef struct ChanCache {
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double i1, i2;
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double o1, o2;
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@ -106,6 +113,7 @@ typedef struct BiquadsContext {
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int width_type;
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int poles;
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int csg;
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int transform_type;
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double gain;
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double frequency;
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@ -258,6 +266,101 @@ BIQUAD_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1)
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BIQUAD_FILTER(flt, float, -1., 1., 0)
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BIQUAD_FILTER(dbl, double, -1., 1., 0)
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#define BIQUAD_DII_FILTER(name, type, min, max, need_clipping) \
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static void biquad_dii_## name (BiquadsContext *s, \
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const void *input, void *output, int len, \
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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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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 w1 = *z1; \
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double w2 = *z2; \
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double wet = s->mix; \
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double dry = 1. - wet; \
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double in, out, w0; \
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\
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a1 = -a1; \
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a2 = -a2; \
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\
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for (int i = 0; i < len; i++) { \
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in = ibuf[i]; \
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w0 = in + a1 * w1 + a2 * w2; \
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out = b0 * w0 + b1 * w1 + b2 * w2; \
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w2 = w1; \
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w1 = w0; \
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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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*z1 = w1; \
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*z2 = w2; \
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}
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BIQUAD_DII_FILTER(s16, int16_t, INT16_MIN, INT16_MAX, 1)
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BIQUAD_DII_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1)
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BIQUAD_DII_FILTER(flt, float, -1., 1., 0)
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BIQUAD_DII_FILTER(dbl, double, -1., 1., 0)
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#define BIQUAD_TDII_FILTER(name, type, min, max, need_clipping) \
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static void biquad_tdii_## name (BiquadsContext *s, \
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const void *input, void *output, int len, \
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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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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 w1 = *z1; \
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double w2 = *z2; \
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double wet = s->mix; \
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double dry = 1. - wet; \
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double in, out; \
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\
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a1 = -a1; \
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a2 = -a2; \
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\
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for (int i = 0; i < len; i++) { \
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in = ibuf[i]; \
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out = b0 * in + w1; \
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w1 = b1 * in + w2 + a1 * out; \
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w2 = b2 * in + a2 * out; \
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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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*z1 = w1; \
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*z2 = w2; \
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}
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BIQUAD_TDII_FILTER(s16, int16_t, INT16_MIN, INT16_MAX, 1)
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BIQUAD_TDII_FILTER(s32, int32_t, INT32_MIN, INT32_MAX, 1)
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BIQUAD_TDII_FILTER(flt, float, -1., 1., 0)
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BIQUAD_TDII_FILTER(dbl, double, -1., 1., 0)
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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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@ -437,15 +540,64 @@ static int config_filter(AVFilterLink *outlink, int reset)
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if (reset)
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memset(s->cache, 0, sizeof(ChanCache) * inlink->channels);
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switch (inlink->format) {
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case AV_SAMPLE_FMT_S16P: s->filter = biquad_s16; break;
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case AV_SAMPLE_FMT_S32P: s->filter = biquad_s32; break;
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case AV_SAMPLE_FMT_FLTP: s->filter = biquad_flt; break;
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case AV_SAMPLE_FMT_DBLP: s->filter = biquad_dbl; break;
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default: av_assert0(0);
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}
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s->block_align = av_get_bytes_per_sample(inlink->format);
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switch (s->transform_type) {
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case DI:
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switch (inlink->format) {
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case AV_SAMPLE_FMT_S16P:
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s->filter = biquad_s16;
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break;
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case AV_SAMPLE_FMT_S32P:
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s->filter = biquad_s32;
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break;
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case AV_SAMPLE_FMT_FLTP:
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s->filter = biquad_flt;
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break;
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case AV_SAMPLE_FMT_DBLP:
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s->filter = biquad_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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case DII:
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switch (inlink->format) {
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case AV_SAMPLE_FMT_S16P:
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s->filter = biquad_dii_s16;
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break;
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case AV_SAMPLE_FMT_S32P:
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s->filter = biquad_dii_s32;
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break;
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case AV_SAMPLE_FMT_FLTP:
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s->filter = biquad_dii_flt;
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break;
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case AV_SAMPLE_FMT_DBLP:
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s->filter = biquad_dii_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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case TDII:
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switch (inlink->format) {
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case AV_SAMPLE_FMT_S16P:
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s->filter = biquad_tdii_s16;
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break;
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case AV_SAMPLE_FMT_S32P:
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s->filter = biquad_tdii_s32;
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break;
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case AV_SAMPLE_FMT_FLTP:
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s->filter = biquad_tdii_flt;
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break;
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case AV_SAMPLE_FMT_DBLP:
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s->filter = biquad_tdii_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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s->block_align = av_get_bytes_per_sample(inlink->format);
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return 0;
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}
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@ -610,6 +762,11 @@ static const AVOption equalizer_options[] = {
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{"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
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{"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"},
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{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
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{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
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{NULL}
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};
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@ -636,6 +793,11 @@ static const AVOption bass_options[] = {
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{"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
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{"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"},
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{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
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{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
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{NULL}
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};
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@ -662,6 +824,11 @@ static const AVOption treble_options[] = {
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{"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
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{"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"},
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{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
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{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
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{NULL}
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};
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@ -687,6 +854,11 @@ static const AVOption bandpass_options[] = {
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{"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
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{"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"},
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{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
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{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
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{NULL}
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};
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@ -711,6 +883,11 @@ static const AVOption bandreject_options[] = {
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{"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
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{"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"},
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{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
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{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
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{NULL}
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};
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@ -737,6 +914,11 @@ static const AVOption lowpass_options[] = {
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{"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
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{"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
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{"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
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{"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"},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
@ -763,6 +945,11 @@ static const AVOption highpass_options[] = {
|
||||
{"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"},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
@ -789,6 +976,11 @@ static const AVOption allpass_options[] = {
|
||||
{"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"},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
@ -815,6 +1007,11 @@ static const AVOption lowshelf_options[] = {
|
||||
{"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"},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
@ -841,6 +1038,11 @@ static const AVOption highshelf_options[] = {
|
||||
{"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"},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
@ -860,6 +1062,11 @@ static const AVOption biquad_options[] = {
|
||||
{"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"},
|
||||
{NULL}
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user