int poles;
int csg;
int transform_type;
+ int precision;
+
+ int bypass;
double gain;
double frequency;
int disabled);
} BiquadsContext;
-static av_cold int init(AVFilterContext *ctx)
-{
- BiquadsContext *s = ctx->priv;
-
- if (s->filter_type != biquad) {
- if (s->frequency <= 0 || s->width <= 0) {
- av_log(ctx, AV_LOG_ERROR, "Invalid frequency %f and/or width %f <= 0\n",
- s->frequency, s->width);
- return AVERROR(EINVAL);
- }
- }
-
- return 0;
-}
-
static int query_formats(AVFilterContext *ctx)
{
+ BiquadsContext *s = ctx->priv;
AVFilterFormats *formats;
AVFilterChannelLayouts *layouts;
- static const enum AVSampleFormat sample_fmts[] = {
+ static const enum AVSampleFormat auto_sample_fmts[] = {
AV_SAMPLE_FMT_S16P,
AV_SAMPLE_FMT_S32P,
AV_SAMPLE_FMT_FLTP,
AV_SAMPLE_FMT_DBLP,
AV_SAMPLE_FMT_NONE
};
+ enum AVSampleFormat sample_fmts[] = {
+ AV_SAMPLE_FMT_S16P,
+ AV_SAMPLE_FMT_NONE
+ };
int ret;
layouts = ff_all_channel_counts();
if (ret < 0)
return ret;
- formats = ff_make_format_list(sample_fmts);
+ switch (s->precision) {
+ case 0:
+ sample_fmts[0] = AV_SAMPLE_FMT_S16P;
+ formats = ff_make_format_list(sample_fmts);
+ break;
+ case 1:
+ sample_fmts[0] = AV_SAMPLE_FMT_S32P;
+ formats = ff_make_format_list(sample_fmts);
+ break;
+ case 2:
+ sample_fmts[0] = AV_SAMPLE_FMT_FLTP;
+ formats = ff_make_format_list(sample_fmts);
+ break;
+ case 3:
+ sample_fmts[0] = AV_SAMPLE_FMT_DBLP;
+ formats = ff_make_format_list(sample_fmts);
+ break;
+ default:
+ formats = ff_make_format_list(auto_sample_fmts);
+ break;
+ }
if (!formats)
return AVERROR(ENOMEM);
ret = ff_set_common_formats(ctx, formats);
in = ibuf[i]; \
t0 = in - k1 * s0; \
t1 = t0 * k1 + s0; \
- s0 = t1; \
out += t1 * v2; \
\
t0 = t0 - k0 * s1; \
t1 = t0 * k0 + s1; \
out += t1 * v1; \
- s1 = t1; \
\
out += t0 * v0; \
- s0 = s1; \
+ s0 = t1; \
s1 = t0; \
\
out = out * wet + in * dry; \
double K = tan(w0 / 2.);
double alpha, beta;
- if (w0 > M_PI) {
- av_log(ctx, AV_LOG_ERROR,
- "Invalid frequency %f. Frequency must be less than half the sample-rate %d.\n",
- s->frequency, inlink->sample_rate);
- return AVERROR(EINVAL);
+ s->bypass = (((w0 > M_PI || w0 <= 0.) && reset) || (s->width <= 0.)) && (s->filter_type != biquad);
+ if (s->bypass) {
+ av_log(ctx, AV_LOG_WARNING, "Invalid frequency and/or width!\n");
+ return 0;
}
+ if ((w0 > M_PI || w0 <= 0.) && (s->filter_type != biquad))
+ return AVERROR(EINVAL);
+
switch (s->width_type) {
case NONE:
alpha = 0.0;
case bass:
beta = sqrt((A * A + 1) - (A - 1) * (A - 1));
case lowshelf:
- s->a0 = (A + 1) + (A - 1) * cos(w0) + beta * alpha;
- s->a1 = -2 * ((A - 1) + (A + 1) * cos(w0));
- s->a2 = (A + 1) + (A - 1) * cos(w0) - beta * alpha;
- s->b0 = A * ((A + 1) - (A - 1) * cos(w0) + beta * alpha);
- s->b1 = 2 * A * ((A - 1) - (A + 1) * cos(w0));
- s->b2 = A * ((A + 1) - (A - 1) * cos(w0) - beta * alpha);
+ if (s->poles == 1) {
+ double A = ff_exp10(s->gain / 20);
+ double ro = -sin(w0 / 2. - M_PI_4) / sin(w0 / 2. + M_PI_4);
+ double n = (A + 1) / (A - 1);
+ double alpha1 = A == 1. ? 0. : n - FFSIGN(n) * sqrt(n * n - 1);
+ double beta0 = ((1 + A) + (1 - A) * alpha1) * 0.5;
+ double beta1 = ((1 - A) + (1 + A) * alpha1) * 0.5;
+
+ s->a0 = 1 + ro * alpha1;
+ s->a1 = -ro - alpha1;
+ s->a2 = 0;
+ s->b0 = beta0 + ro * beta1;
+ s->b1 = -beta1 - ro * beta0;
+ s->b2 = 0;
+ } else {
+ s->a0 = (A + 1) + (A - 1) * cos(w0) + beta * alpha;
+ s->a1 = -2 * ((A - 1) + (A + 1) * cos(w0));
+ s->a2 = (A + 1) + (A - 1) * cos(w0) - beta * alpha;
+ s->b0 = A * ((A + 1) - (A - 1) * cos(w0) + beta * alpha);
+ s->b1 = 2 * A * ((A - 1) - (A + 1) * cos(w0));
+ s->b2 = A * ((A + 1) - (A - 1) * cos(w0) - beta * alpha);
+ }
break;
case treble:
beta = sqrt((A * A + 1) - (A - 1) * (A - 1));
case highshelf:
- s->a0 = (A + 1) - (A - 1) * cos(w0) + beta * alpha;
- s->a1 = 2 * ((A - 1) - (A + 1) * cos(w0));
- s->a2 = (A + 1) - (A - 1) * cos(w0) - beta * alpha;
- s->b0 = A * ((A + 1) + (A - 1) * cos(w0) + beta * alpha);
- s->b1 =-2 * A * ((A - 1) + (A + 1) * cos(w0));
- s->b2 = A * ((A + 1) + (A - 1) * cos(w0) - beta * alpha);
+ if (s->poles == 1) {
+ double A = ff_exp10(s->gain / 20);
+ double ro = sin(w0 / 2. - M_PI_4) / sin(w0 / 2. + M_PI_4);
+ double n = (A + 1) / (A - 1);
+ double alpha1 = A == 1. ? 0. : n - FFSIGN(n) * sqrt(n * n - 1);
+ double beta0 = ((1 + A) + (1 - A) * alpha1) * 0.5;
+ double beta1 = ((1 - A) + (1 + A) * alpha1) * 0.5;
+
+ s->a0 = 1 + ro * alpha1;
+ s->a1 = ro + alpha1;
+ s->a2 = 0;
+ s->b0 = beta0 + ro * beta1;
+ s->b1 = beta1 + ro * beta0;
+ s->b2 = 0;
+ } else {
+ s->a0 = (A + 1) - (A - 1) * cos(w0) + beta * alpha;
+ s->a1 = 2 * ((A - 1) - (A + 1) * cos(w0));
+ s->a2 = (A + 1) - (A - 1) * cos(w0) - beta * alpha;
+ s->b0 = A * ((A + 1) + (A - 1) * cos(w0) + beta * alpha);
+ s->b1 =-2 * A * ((A - 1) + (A + 1) * cos(w0));
+ s->b2 = A * ((A + 1) + (A - 1) * cos(w0) - beta * alpha);
+ }
break;
case bandpass:
if (s->csg) {
ThreadData td;
int ch;
+ if (s->bypass)
+ return ff_filter_frame(outlink, buf);
+
if (av_frame_is_writable(buf)) {
out_buf = buf;
} else {
#define DEFINE_BIQUAD_FILTER(name_, description_) \
AVFILTER_DEFINE_CLASS(name_); \
-static av_cold int name_##_init(AVFilterContext *ctx) \
+static av_cold int name_##_init(AVFilterContext *ctx) \
{ \
BiquadsContext *s = ctx->priv; \
- s->class = &name_##_class; \
s->filter_type = name_; \
- return init(ctx); \
+ return 0; \
} \
\
-AVFilter ff_af_##name_ = { \
+const AVFilter ff_af_##name_ = { \
.name = #name_, \
.description = NULL_IF_CONFIG_SMALL(description_), \
.priv_size = sizeof(BiquadsContext), \
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
DEFINE_BIQUAD_FILTER(equalizer, "Apply two-pole peaking equalization (EQ) filter.");
#endif /* CONFIG_EQUALIZER_FILTER */
-#if CONFIG_BASS_FILTER
-static const AVOption bass_options[] = {
+#if CONFIG_BASS_FILTER || CONFIG_LOWSHELF_FILTER
+static const AVOption bass_lowshelf_options[] = {
{"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS},
{"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS},
{"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"},
{"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS},
{"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
{"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
+ {"poles", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF},
+ {"p", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF},
{"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
{"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
{"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
+#if CONFIG_BASS_FILTER
+#define bass_options bass_lowshelf_options
DEFINE_BIQUAD_FILTER(bass, "Boost or cut lower frequencies.");
#endif /* CONFIG_BASS_FILTER */
-#if CONFIG_TREBLE_FILTER
-static const AVOption treble_options[] = {
+
+#if CONFIG_LOWSHELF_FILTER
+#define lowshelf_options bass_lowshelf_options
+DEFINE_BIQUAD_FILTER(lowshelf, "Apply a low shelf filter.");
+#endif /* CONFIG_LOWSHELF_FILTER */
+#endif /* CONFIG_BASS_FILTER || CONFIG LOWSHELF_FILTER */
+#if CONFIG_TREBLE_FILTER || CONFIG_HIGHSHELF_FILTER
+static const AVOption treble_highshelf_options[] = {
{"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS},
{"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS},
{"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"},
{"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS},
{"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
{"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
+ {"poles", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF},
+ {"p", "set number of poles", OFFSET(poles), AV_OPT_TYPE_INT, {.i64=2}, 1, 2, AF},
{"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
{"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
{"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
+#if CONFIG_TREBLE_FILTER
+#define treble_options treble_highshelf_options
DEFINE_BIQUAD_FILTER(treble, "Boost or cut upper frequencies.");
#endif /* CONFIG_TREBLE_FILTER */
+
+#if CONFIG_HIGHSHELF_FILTER
+#define highshelf_options treble_highshelf_options
+DEFINE_BIQUAD_FILTER(highshelf, "Apply a high shelf filter.");
+#endif /* CONFIG_HIGHSHELF_FILTER */
+#endif /* CONFIG_TREBLE_FILTER || CONFIG_HIGHSHELF_FILTER */
#if CONFIG_BANDPASS_FILTER
static const AVOption bandpass_options[] = {
{"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS},
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
DEFINE_BIQUAD_FILTER(allpass, "Apply a two-pole all-pass filter.");
#endif /* CONFIG_ALLPASS_FILTER */
-#if CONFIG_LOWSHELF_FILTER
-static const AVOption lowshelf_options[] = {
- {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS},
- {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 0, 999999, FLAGS},
- {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"},
- {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"},
- {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"},
- {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"},
- {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"},
- {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"},
- {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"},
- {"width", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS},
- {"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS},
- {"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
- {"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
- {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
- {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
- {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
- {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
- {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
- {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
- {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
- {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
- {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"},
- {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
- {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
- {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
- {NULL}
-};
-
-DEFINE_BIQUAD_FILTER(lowshelf, "Apply a low shelf filter.");
-#endif /* CONFIG_LOWSHELF_FILTER */
-#if CONFIG_HIGHSHELF_FILTER
-static const AVOption highshelf_options[] = {
- {"frequency", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS},
- {"f", "set central frequency", OFFSET(frequency), AV_OPT_TYPE_DOUBLE, {.dbl=3000}, 0, 999999, FLAGS},
- {"width_type", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"},
- {"t", "set filter-width type", OFFSET(width_type), AV_OPT_TYPE_INT, {.i64=QFACTOR}, HERTZ, NB_WTYPE-1, FLAGS, "width_type"},
- {"h", "Hz", 0, AV_OPT_TYPE_CONST, {.i64=HERTZ}, 0, 0, FLAGS, "width_type"},
- {"q", "Q-Factor", 0, AV_OPT_TYPE_CONST, {.i64=QFACTOR}, 0, 0, FLAGS, "width_type"},
- {"o", "octave", 0, AV_OPT_TYPE_CONST, {.i64=OCTAVE}, 0, 0, FLAGS, "width_type"},
- {"s", "slope", 0, AV_OPT_TYPE_CONST, {.i64=SLOPE}, 0, 0, FLAGS, "width_type"},
- {"k", "kHz", 0, AV_OPT_TYPE_CONST, {.i64=KHERTZ}, 0, 0, FLAGS, "width_type"},
- {"width", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS},
- {"w", "set shelf transition steep", OFFSET(width), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0, 99999, FLAGS},
- {"gain", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
- {"g", "set gain", OFFSET(gain), AV_OPT_TYPE_DOUBLE, {.dbl=0}, -900, 900, FLAGS},
- {"mix", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
- {"m", "set mix", OFFSET(mix), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS},
- {"channels", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
- {"c", "set channels to filter", OFFSET(channels), AV_OPT_TYPE_CHANNEL_LAYOUT, {.i64=-1}, INT64_MIN, INT64_MAX, FLAGS},
- {"normalize", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
- {"n", "normalize coefficients", OFFSET(normalize), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS},
- {"transform", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
- {"a", "set transform type", OFFSET(transform_type), AV_OPT_TYPE_INT, {.i64=0}, 0, NB_TTYPE-1, AF, "transform_type"},
- {"di", "direct form I", 0, AV_OPT_TYPE_CONST, {.i64=DI}, 0, 0, AF, "transform_type"},
- {"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
- {"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
- {"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
- {NULL}
-};
-
-DEFINE_BIQUAD_FILTER(highshelf, "Apply a high shelf filter.");
-#endif /* CONFIG_HIGHSHELF_FILTER */
#if CONFIG_BIQUAD_FILTER
static const AVOption biquad_options[] = {
{"a0", NULL, OFFSET(oa0), AV_OPT_TYPE_DOUBLE, {.dbl=1}, INT32_MIN, INT32_MAX, FLAGS},
{"dii", "direct form II", 0, AV_OPT_TYPE_CONST, {.i64=DII}, 0, 0, AF, "transform_type"},
{"tdii", "transposed direct form II", 0, AV_OPT_TYPE_CONST, {.i64=TDII}, 0, 0, AF, "transform_type"},
{"latt", "lattice-ladder form", 0, AV_OPT_TYPE_CONST, {.i64=LATT}, 0, 0, AF, "transform_type"},
+ {"precision", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"r", "set filtering precision", OFFSET(precision), AV_OPT_TYPE_INT, {.i64=-1}, -1, 3, AF, "precision"},
+ {"auto", "automatic", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "precision"},
+ {"s16", "signed 16-bit", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "precision"},
+ {"s32", "signed 32-bit", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "precision"},
+ {"f32", "floating-point single", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "precision"},
+ {"f64", "floating-point double", 0, AV_OPT_TYPE_CONST, {.i64=3}, 0, 0, AF, "precision"},
{NULL}
};
projects / ffmpeg / blobdiff