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avfilter/af_acrossover: move coefficients and state to simple arrays
This commit is contained in:
Paul B Mahol
parent
aa3566a8ee
commit
ba6e2a2d05
@ -39,21 +39,17 @@
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#define MAX_SPLITS 16
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#define MAX_BANDS MAX_SPLITS + 1
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#define B0 0
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#define B1 1
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#define B2 2
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#define A1 3
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#define A2 4
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typedef struct BiquadCoeffs {
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double b0, b1, b2;
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double a1, a2;
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double cd[5];
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float cf[5];
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} BiquadCoeffs;
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typedef struct BiquadContext {
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double z1, z2;
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} BiquadContext;
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typedef struct CrossoverChannel {
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BiquadContext lp[MAX_BANDS][20];
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BiquadContext hp[MAX_BANDS][20];
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BiquadContext ap[MAX_BANDS][MAX_BANDS][20];
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} CrossoverChannel;
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typedef struct AudioCrossoverContext {
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const AVClass *class;
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@ -72,7 +68,7 @@ typedef struct AudioCrossoverContext {
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BiquadCoeffs hp[MAX_BANDS][20];
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BiquadCoeffs ap[MAX_BANDS][20];
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CrossoverChannel *xover;
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AVFrame *xover;
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AVFrame *input_frame;
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AVFrame *frames[MAX_BANDS];
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@ -178,11 +174,17 @@ static void set_lp(BiquadCoeffs *b, double fc, double q, double sr)
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double a1 = -2. * cosine;
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double a2 = 1. - alpha;
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b->b0 = b0 / a0;
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b->b1 = b1 / a0;
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b->b2 = b2 / a0;
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b->a1 = -a1 / a0;
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b->a2 = -a2 / a0;
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b->cd[B0] = b0 / a0;
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b->cd[B1] = b1 / a0;
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b->cd[B2] = b2 / a0;
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b->cd[A1] = -a1 / a0;
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b->cd[A2] = -a2 / a0;
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b->cf[B0] = b->cd[B0];
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b->cf[B1] = b->cd[B1];
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b->cf[B2] = b->cd[B2];
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b->cf[A1] = b->cd[A1];
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b->cf[A2] = b->cd[A2];
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}
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static void set_hp(BiquadCoeffs *b, double fc, double q, double sr)
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@ -198,11 +200,17 @@ static void set_hp(BiquadCoeffs *b, double fc, double q, double sr)
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double a1 = -2. * cosine;
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double a2 = 1. - alpha;
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b->b0 = b0 / a0;
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b->b1 = b1 / a0;
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b->b2 = b2 / a0;
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b->a1 = -a1 / a0;
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b->a2 = -a2 / a0;
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b->cd[B0] = b0 / a0;
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b->cd[B1] = b1 / a0;
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b->cd[B2] = b2 / a0;
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b->cd[A1] = -a1 / a0;
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b->cd[A2] = -a2 / a0;
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b->cf[B0] = b->cd[B0];
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b->cf[B1] = b->cd[B1];
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b->cf[B2] = b->cd[B2];
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b->cf[A1] = b->cd[A1];
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b->cf[A2] = b->cd[A2];
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}
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static void set_ap(BiquadCoeffs *b, double fc, double q, double sr)
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@ -218,22 +226,34 @@ static void set_ap(BiquadCoeffs *b, double fc, double q, double sr)
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double b1 = a1;
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double b2 = a0;
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b->b0 = b0 / a0;
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b->b1 = b1 / a0;
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b->b2 = b2 / a0;
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b->a1 = -a1 / a0;
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b->a2 = -a2 / a0;
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b->cd[B0] = b0 / a0;
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b->cd[B1] = b1 / a0;
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b->cd[B2] = b2 / a0;
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b->cd[A1] = -a1 / a0;
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b->cd[A2] = -a2 / a0;
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b->cf[B0] = b->cd[B0];
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b->cf[B1] = b->cd[B1];
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b->cf[B2] = b->cd[B2];
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b->cf[A1] = b->cd[A1];
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b->cf[A2] = b->cd[A2];
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}
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static void set_ap1(BiquadCoeffs *b, double fc, double sr)
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{
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double omega = 2. * M_PI * fc / sr;
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b->a1 = exp(-omega);
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b->a2 = 0.;
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b->b0 = -b->a1;
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b->b1 = 1.;
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b->b2 = 0.;
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b->cd[A1] = exp(-omega);
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b->cd[A2] = 0.;
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b->cd[B0] = -b->cd[A1];
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b->cd[B1] = 1.;
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b->cd[B2] = 0.;
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b->cf[B0] = b->cd[B0];
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b->cf[B1] = b->cd[B1];
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b->cf[B2] = b->cd[B2];
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b->cf[A1] = b->cd[A1];
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b->cf[A2] = b->cd[A2];
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}
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static void calc_q_factors(int order, double *q)
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@ -275,18 +295,18 @@ static int query_formats(AVFilterContext *ctx)
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}
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#define BIQUAD_PROCESS(name, type) \
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static void biquad_process_## name(const BiquadCoeffs *const c,\
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BiquadContext *b, \
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static void biquad_process_## name(const type *const c, \
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type *b, \
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type *dst, const type *src, \
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int nb_samples) \
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{ \
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const type b0 = c->b0; \
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const type b1 = c->b1; \
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const type b2 = c->b2; \
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const type a1 = c->a1; \
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const type a2 = c->a2; \
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type z1 = b->z1; \
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type z2 = b->z2; \
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const type b0 = c[B0]; \
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const type b1 = c[B1]; \
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const type b2 = c[B2]; \
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const type a1 = c[A1]; \
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const type a2 = c[A2]; \
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type z1 = b[0]; \
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type z2 = b[1]; \
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\
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for (int n = 0; n + 1 < nb_samples; n++) { \
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type in = src[n]; \
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@ -316,8 +336,8 @@ static void biquad_process_## name(const BiquadCoeffs *const c,\
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dst[n] = out; \
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} \
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\
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b->z1 = z1; \
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b->z2 = z2; \
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b[0] = z1; \
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b[1] = z2; \
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}
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BIQUAD_PROCESS(fltp, float)
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@ -332,40 +352,41 @@ static int filter_channels_## name(AVFilterContext *ctx, void *arg, int jobnr, i
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const int start = (in->channels * jobnr) / nb_jobs; \
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const int end = (in->channels * (jobnr+1)) / nb_jobs; \
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const int nb_samples = in->nb_samples; \
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const int nb_outs = ctx->nb_outputs; \
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\
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for (int ch = start; ch < end; ch++) { \
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const type *src = (const type *)in->extended_data[ch]; \
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CrossoverChannel *xover = &s->xover[ch]; \
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type *xover = (type *)s->xover->extended_data[ch]; \
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\
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s->fdsp->vector_## ff ##mul_scalar((type *)frames[0]->extended_data[ch], src, \
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s->level_in, FFALIGN(nb_samples, sizeof(type))); \
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\
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for (int band = 0; band < ctx->nb_outputs; band++) { \
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for (int f = 0; band + 1 < ctx->nb_outputs && f < s->filter_count; f++) { \
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for (int band = 0; band < nb_outs; band++) { \
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for (int f = 0; band + 1 < nb_outs && f < s->filter_count; f++) { \
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const type *prv = (const type *)frames[band]->extended_data[ch]; \
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type *dst = (type *)frames[band + 1]->extended_data[ch]; \
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const type *hsrc = f == 0 ? prv : dst; \
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BiquadContext *hp = &xover->hp[band][f]; \
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BiquadCoeffs *hpc = &s->hp[band][f]; \
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type *hp = xover + nb_outs * 20 + band * 20 + f * 2; \
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const type *const hpc = (type *)&s->hp[band][f].c ## ff; \
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\
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biquad_process_## name(hpc, hp, dst, hsrc, nb_samples); \
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} \
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\
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for (int f = 0; band + 1 < ctx->nb_outputs && f < s->filter_count; f++) { \
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for (int f = 0; band + 1 < nb_outs && f < s->filter_count; f++) { \
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type *dst = (type *)frames[band]->extended_data[ch]; \
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const type *lsrc = dst; \
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BiquadContext *lp = &xover->lp[band][f]; \
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BiquadCoeffs *lpc = &s->lp[band][f]; \
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type *lp = xover + band * 20 + f * 2; \
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const type *const lpc = (type *)&s->lp[band][f].c ## ff; \
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\
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biquad_process_## name(lpc, lp, dst, lsrc, nb_samples); \
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} \
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\
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for (int aband = band + 1; aband + 1 < ctx->nb_outputs; aband++) { \
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for (int aband = band + 1; aband + 1 < nb_outs; aband++) { \
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if (s->first_order) { \
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const type *asrc = (const type *)frames[band]->extended_data[ch]; \
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type *dst = (type *)frames[band]->extended_data[ch]; \
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BiquadContext *ap = &xover->ap[band][aband][0]; \
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BiquadCoeffs *apc = &s->ap[aband][0]; \
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type *ap = xover + nb_outs * 40 + (aband * nb_outs + band) * 20; \
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const type *const apc = (type *)&s->ap[aband][0].c ## ff; \
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\
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biquad_process_## name(apc, ap, dst, asrc, nb_samples); \
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} \
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@ -373,15 +394,15 @@ static int filter_channels_## name(AVFilterContext *ctx, void *arg, int jobnr, i
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for (int f = s->first_order; f < s->ap_filter_count; f++) { \
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const type *asrc = (const type *)frames[band]->extended_data[ch]; \
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type *dst = (type *)frames[band]->extended_data[ch]; \
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BiquadContext *ap = &xover->ap[band][aband][f]; \
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BiquadCoeffs *apc = &s->ap[aband][f]; \
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type *ap = xover + nb_outs * 40 + (aband * nb_outs + band) * 20 + f * 2;\
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const type *const apc = (type *)&s->ap[aband][f].c ## ff; \
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\
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biquad_process_## name(apc, ap, dst, asrc, nb_samples); \
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} \
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} \
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} \
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\
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for (int band = 0; band < ctx->nb_outputs && s->first_order; band++) { \
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for (int band = 0; band < nb_outs && s->first_order; band++) { \
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if (band & 1) { \
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type *dst = (type *)frames[band]->extended_data[ch]; \
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s->fdsp->vector_## ff ##mul_scalar(dst, dst, -one, \
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@ -403,10 +424,6 @@ static int config_input(AVFilterLink *inlink)
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int sample_rate = inlink->sample_rate;
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double q[16];
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s->xover = av_calloc(inlink->channels, sizeof(*s->xover));
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if (!s->xover)
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return AVERROR(ENOMEM);
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s->order = (s->order_opt + 1) * 2;
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s->filter_count = s->order / 2;
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s->first_order = s->filter_count & 1;
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@ -441,6 +458,11 @@ static int config_input(AVFilterLink *inlink)
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case AV_SAMPLE_FMT_DBLP: s->filter_channels = filter_channels_dblp; break;
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}
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s->xover = ff_get_audio_buffer(inlink, 2 * (ctx->nb_outputs * 10 + ctx->nb_outputs * 10 +
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ctx->nb_outputs * ctx->nb_outputs * 10));
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if (!s->xover)
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return AVERROR(ENOMEM);
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return 0;
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}
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@ -492,7 +514,7 @@ static av_cold void uninit(AVFilterContext *ctx)
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av_freep(&s->fdsp);
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av_freep(&s->splits);
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av_freep(&s->xover);
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av_frame_free(&s->xover);
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for (i = 0; i < ctx->nb_outputs; i++)
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av_freep(&ctx->output_pads[i].name);
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