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avfilter/avf_showwaves: fix flushing frames

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This commit is contained in:
Paul B Mahol 2024-06-24 16:48:05 +02:00
parent 163da15c52
commit 797b9ea817
1 changed files with 39 additions and 11 deletions
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50
libavfilter/avf_showwaves.c
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@ -90,7 +90,9 @@ typedef struct ShowWavesContext {
int draw_mode; ///< ShowWavesDrawMode
int split_channels;
int filter_mode;
int status;
uint8_t *fg;
int64_t eof_pts;
int64_t in_pts;
int (*get_h)(int16_t sample, int height);
@ -569,10 +571,15 @@ inline static int push_frame(AVFilterLink *outlink, AVFrame *out, int64_t pts)
out->duration = 1;
out->pts = av_rescale_q(pts, inlink->time_base, outlink->time_base);
s->eof_pts = out->pts + out->duration;
ret = ff_filter_frame(outlink, out);
for (int i = 0; i < inlink->ch_layout.nb_channels; i++)
s->buf_idy[i] = -1;
if (s->status && s->history_filled <= 0)
ff_outlink_set_status(outlink, s->status, s->eof_pts);
return ret;
}
@ -646,7 +653,6 @@ static int push_single_pic(AVFilterLink *outlink)
return push_frame(outlink, out, 0);
}
static int request_frame(AVFilterLink *outlink)
{
ShowWavesContext *s = outlink->src->priv;
@ -704,6 +710,7 @@ static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *in)
ptrdiff_t linesize;
uint8_t *dst;
AVFrame *out;
int ret;
if (in) {
const int nb_samples = in->nb_samples;
@ -713,13 +720,17 @@ static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *in)
s->history_filled += nb_samples * nb_channels;
s->in_pts = in->pts;
av_frame_free(&in);
if (s->history_filled < s->history_nb_samples) {
int64_t pts;
if (!ff_inlink_acknowledge_status(inlink, &s->status, &pts)) {
ff_inlink_request_frame(inlink);
return 0;
}
}
}
if (s->history_filled < s->history_nb_samples) {
FF_FILTER_FORWARD_STATUS(inlink, outlink);
ff_inlink_request_frame(inlink);
return 0;
}
flush:
out = alloc_out_frame(s, outlink);
if (out == NULL)
@ -749,10 +760,19 @@ static int showwaves_filter_frame(AVFilterLink *inlink, AVFrame *in)
}
}
s->history_filled -= s->step_size * nb_channels;
s->history_filled -= FFMIN(s->history_filled, s->step_size * nb_channels);
memmove(history, history + s->step_size * nb_channels, s->history_filled * sizeof(*history));
memset(history + s->history_filled, 0, (2 * s->history_nb_samples - s->history_filled) * sizeof(*history));
return push_frame(outlink, out, s->in_pts);
ret = push_frame(outlink, out, s->in_pts);
if (ret < 0)
return ret;
if (s->status && s->history_filled > 0) {
s->in_pts += s->step_size;
goto flush;
}
return 0;
}
static int activate(AVFilterContext *ctx)
@ -761,6 +781,7 @@ static int activate(AVFilterContext *ctx)
AVFilterLink *outlink = ctx->outputs[0];
ShowWavesContext *s = ctx->priv;
AVFrame *in;
int64_t pts;
int ret;
FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink);
@ -771,10 +792,17 @@ static int activate(AVFilterContext *ctx)
if (ret > 0)
return showwaves_filter_frame(inlink, in);
FF_FILTER_FORWARD_STATUS(inlink, outlink);
FF_FILTER_FORWARD_WANTED(outlink, inlink);
if (!ff_inlink_acknowledge_status(inlink, &s->status, &pts) &&
ff_outlink_frame_wanted(outlink)) {
if (ff_inlink_queued_samples(inlink) < s->step_size)
ff_inlink_request_frame(inlink);
else
ff_filter_set_ready(ctx, 100);
} else {
ff_outlink_set_status(outlink, s->status, s->eof_pts);
}
return FFERROR_NOT_READY;
return 0;
}
static const AVFilterPad showwaves_outputs[] = {