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af: fix an aspect of filter chain flushing

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Even if we flush the current filter, we have to read the remaining
output from the frame we previously fed to the filter.
This commit is contained in:
wm4 2015-06-15 14:33:07 +02:00
parent 5eae20fc0f
commit 74a73752c2
1 changed files with 11 additions and 0 deletions
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11
audio/filter/af.c
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@ -832,6 +832,16 @@ static struct mp_audio *af_dequeue_output_frame(struct af_instance *af)
return res;
}
static void read_remaining(struct af_instance *af)
{
int num_frames;
do {
num_frames = af->num_out_queued;
if (!af->filter_out || af->filter_out(af) < 0)
break;
} while (num_frames != af->num_out_queued);
}
static int af_do_filter(struct af_instance *af, struct mp_audio *frame)
{
if (frame)
@ -871,6 +881,7 @@ int af_output_frame(struct af_stream *s, bool eof)
// Flush remaining frames on EOF, but do that only if the previous
// filters have been flushed (i.e. they have no more output).
if (eof && !last) {
read_remaining(cur);
int r = af_do_filter(cur, NULL);
if (r < 0)
return r;