ffmpeg | branch: master | Paul B Mahol <one...@gmail.com> | Fri May 13 22:00:08 2022 +0200| [b90341d1d5585b7181873ac4d85a7c373eb3b2ae] | committer: Paul B Mahol
avfilter/af_asubboost: add channels option > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b90341d1d5585b7181873ac4d85a7c373eb3b2ae --- doc/filters.texi | 3 +++ libavfilter/af_asubboost.c | 23 +++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/doc/filters.texi b/doc/filters.texi index e7623b7967..45ebcccf1c 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -3159,6 +3159,9 @@ Default value is 0.5. @item delay Set delay. Allowed range is from 1 to 100. Default value is 20. + +@item channels +Set the channels to process. Default value is all available. @end table @subsection Commands diff --git a/libavfilter/af_asubboost.c b/libavfilter/af_asubboost.c index 1eb079e3b6..29a1f66ce6 100644 --- a/libavfilter/af_asubboost.c +++ b/libavfilter/af_asubboost.c @@ -38,6 +38,9 @@ typedef struct ASubBoostContext { double a0, a1, a2; double b0, b1, b2; + char *ch_layout_str; + AVChannelLayout ch_layout; + int *write_pos; int buffer_samples; @@ -114,9 +117,18 @@ static int filter_channels(AVFilterContext *ctx, void *arg, int jobnr, int nb_jo double *buffer = (double *)s->buffer->extended_data[ch]; double *w = (double *)s->w->extended_data[ch]; int write_pos = s->write_pos[ch]; + enum AVChannel channel = av_channel_layout_channel_from_index(&in->ch_layout, ch); + const int bypass = av_channel_layout_index_from_channel(&s->ch_layout, channel) < 0; const double a = 0.00001; const double b = 1. - a; + if (bypass) { + if (in != out) + memcpy(out->extended_data[ch], in->extended_data[ch], + in->nb_samples * sizeof(double)); + continue; + } + for (int n = 0; n < in->nb_samples; n++) { double out_sample, boost; @@ -143,9 +155,18 @@ static int filter_channels(AVFilterContext *ctx, void *arg, int jobnr, int nb_jo static int filter_frame(AVFilterLink *inlink, AVFrame *in) { AVFilterContext *ctx = inlink->dst; + ASubBoostContext *s = ctx->priv; AVFilterLink *outlink = ctx->outputs[0]; ThreadData td; AVFrame *out; + int ret; + + ret = av_channel_layout_copy(&s->ch_layout, &inlink->ch_layout); + if (ret < 0) + return ret; + if (strcmp(s->ch_layout_str, "all")) + av_channel_layout_from_string(&s->ch_layout, + s->ch_layout_str); if (av_frame_is_writable(in)) { out = in; @@ -171,6 +192,7 @@ static av_cold void uninit(AVFilterContext *ctx) { ASubBoostContext *s = ctx->priv; + av_channel_layout_uninit(&s->ch_layout); av_frame_free(&s->buffer); av_frame_free(&s->w); av_freep(&s->write_pos); @@ -200,6 +222,7 @@ static const AVOption asubboost_options[] = { { "cutoff", "set cutoff", OFFSET(cutoff), AV_OPT_TYPE_DOUBLE, {.dbl=100}, 50, 900, FLAGS }, { "slope", "set slope", OFFSET(slope), AV_OPT_TYPE_DOUBLE, {.dbl=0.5}, 0.0001, 1, FLAGS }, { "delay", "set delay", OFFSET(delay), AV_OPT_TYPE_DOUBLE, {.dbl=20}, 1, 100, FLAGS }, + { "channels", "set channels to filter", OFFSET(ch_layout_str), AV_OPT_TYPE_STRING, {.str="all"}, 0, 0, FLAGS }, { NULL } }; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
