virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avfilter/af_afir: remove again option, merge it with gtype

Browse Source
This commit is contained in:
Paul B Mahol 2018-10-10 19:55:30 +02:00
parent a628fa1fec
commit 7a6d88ee62
3 changed files with 38 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
doc/filters.texi
View File

@ -1173,14 +1173,15 @@ Set wet gain. This sets final output gain.
@item length
Set Impulse Response filter length. Default is 1, which means whole IR is processed.
@item again
Enable applying gain measured from power of IR. For approach to use for measuring power
of IR see next option.
@item gtype
Enable applying gain measured from power of IR.
Set which approach to use for auto gain measurement.
@table @option
@item none
Do not apply any gain.
@item peak
select peak gain, very conservative approach. This is default value.

65
libavfilter/af_afir.c
View File

@ -335,38 +335,39 @@ static int convert_coeffs(AVFilterContext *ctx)
s->gain = 1;
if (s->again) {
switch (s->gtype) {
case 0:
for (ch = 0; ch < ctx->inputs[1]->channels; ch++) {
float *time = (float *)s->in[1]->extended_data[!s->one2many * ch];
switch (s->gtype) {
case -1:
/* nothinkg to do */
break;
case 0:
for (ch = 0; ch < ctx->inputs[1]->channels; ch++) {
float *time = (float *)s->in[1]->extended_data[!s->one2many * ch];
for (i = 0; i < s->nb_taps; i++)
power += FFABS(time[i]);
}
s->gain = ctx->inputs[1]->channels / power;
break;
case 1:
for (ch = 0; ch < ctx->inputs[1]->channels; ch++) {
float *time = (float *)s->in[1]->extended_data[!s->one2many * ch];
for (i = 0; i < s->nb_taps; i++)
power += time[i];
}
s->gain = ctx->inputs[1]->channels / power;
break;
case 2:
for (ch = 0; ch < ctx->inputs[1]->channels; ch++) {
float *time = (float *)s->in[1]->extended_data[!s->one2many * ch];
for (i = 0; i < s->nb_taps; i++)
power += time[i] * time[i];
}
s->gain = sqrtf(ch / power);
break;
default:
return AVERROR_BUG;
for (i = 0; i < s->nb_taps; i++)
power += FFABS(time[i]);
}
s->gain = ctx->inputs[1]->channels / power;
break;
case 1:
for (ch = 0; ch < ctx->inputs[1]->channels; ch++) {
float *time = (float *)s->in[1]->extended_data[!s->one2many * ch];
for (i = 0; i < s->nb_taps; i++)
power += time[i];
}
s->gain = ctx->inputs[1]->channels / power;
break;
case 2:
for (ch = 0; ch < ctx->inputs[1]->channels; ch++) {
float *time = (float *)s->in[1]->extended_data[!s->one2many * ch];
for (i = 0; i < s->nb_taps; i++)
power += time[i] * time[i];
}
s->gain = sqrtf(ch / power);
break;
default:
return AVERROR_BUG;
}
s->gain = FFMIN(s->gain * s->ir_gain, 1.f);
@ -738,8 +739,8 @@ static const AVOption afir_options[] = {
{ "dry", "set dry gain", OFFSET(dry_gain), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0, 10, AF },
{ "wet", "set wet gain", OFFSET(wet_gain), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0, 10, AF },
{ "length", "set IR length", OFFSET(length), AV_OPT_TYPE_FLOAT, {.dbl=1}, 0, 1, AF },
{ "again", "enable auto gain", OFFSET(again), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, AF },
{ "gtype", "set auto gain type",OFFSET(gtype), AV_OPT_TYPE_INT, {.i64=0}, 0, 2, AF, "gtype" },
{ "gtype", "set IR auto gain type",OFFSET(gtype), AV_OPT_TYPE_INT, {.i64=0}, -1, 2, AF, "gtype" },
{ "none", "without auto gain", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, AF, "gtype" },
{ "peak", "peak gain", 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, AF, "gtype" },
{ "dc", "DC gain", 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, AF, "gtype" },
{ "gn", "gain to noise", 0, AV_OPT_TYPE_CONST, {.i64=2}, 0, 0, AF, "gtype" },

1
libavfilter/af_afir.h
View File

@ -38,7 +38,6 @@ typedef struct AudioFIRContext {
float wet_gain;
float dry_gain;
float length;
int again;
int gtype;
float ir_gain;
int ir_format;