virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-11-29 05:57:37 +02:00
Code Issues Releases Activity

avfilter/af_firequalizer: add zero_phase option

Browse Source 
simply by substracting pts to compensate delay
also handle AV_NOPTS_VALUE

Signed-off-by: Muhammad Faiz <mfcc64@gmail.com>
This commit is contained in:
Muhammad Faiz
2016-06-06 06:28:09 +07:00
parent e7f658be57
commit 77d4dfbec6
3 changed files with 15 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
libavfilter/af_firequalizer.c
View File

@@ -83,6 +83,7 @@ typedef struct {
int wfunc;
int fixed;
int multi;
int zero_phase;
int nb_gain_entry;
int gain_entry_err;
@@ -109,6 +110,7 @@ static const AVOption firequalizer_options[] = {
{ "bharris", "blackman-harris window", 0, AV_OPT_TYPE_CONST, { .i64 = WFUNC_BHARRIS }, 0, 0, FLAGS, "wfunc" },
{ "fixed", "set fixed frame samples", OFFSET(fixed), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "multi", "set multi channels mode", OFFSET(multi), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ "zero_phase", "set zero phase mode", OFFSET(zero_phase), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
{ NULL }
};
@@ -493,7 +495,12 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
(float *) frame->extended_data[ch], frame->nb_samples);
}
s->next_pts = frame->pts + av_rescale_q(frame->nb_samples, av_make_q(1, inlink->sample_rate), inlink->time_base);
s->next_pts = AV_NOPTS_VALUE;
if (frame->pts != AV_NOPTS_VALUE) {
s->next_pts = frame->pts + av_rescale_q(frame->nb_samples, av_make_q(1, inlink->sample_rate), inlink->time_base);
if (s->zero_phase)
frame->pts -= av_rescale_q(s->fir_len/2, av_make_q(1, inlink->sample_rate), inlink->time_base);
}
s->frame_nsamples_max = FFMAX(s->frame_nsamples_max, frame->nb_samples);
return ff_filter_frame(ctx->outputs[0], frame);
}