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audiomixer: Make sure to not have pads being behind the current offset

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We would break sync between the different streams then.
This commit is contained in:
Sebastian Dröge 2014-12-17 19:37:22 +01:00
parent d4c4af699e
commit 27bcbf0a80
1 changed files with 29 additions and 2 deletions
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31
gst/audiomixer/gstaudiomixer.c
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@ -1447,12 +1447,39 @@ gst_audiomixer_aggregate (GstAggregator * agg, gboolean timeout)
if (!pad->buffer && !dropped && GST_AGGREGATOR_PAD (pad)->eos) {
GST_DEBUG_OBJECT (aggpad, "Pad is in EOS state");
continue;
} else {
is_eos = FALSE;
}
/* At this point adata->output_offset >= audiomixer->offset or we have no buffer anymore */
g_assert (!pad->buffer || pad->output_offset >= audiomixer->offset);
g_assert (pad->buffer);
/* This pad is lacking behind, we need to update the offset
* and maybe drop the current buffer */
if (pad->output_offset < audiomixer->offset) {
gint64 diff = audiomixer->offset - pad->output_offset;
gint bpf = GST_AUDIO_INFO_BPF (&audiomixer->info);
pad->position += diff * bpf;
if (pad->position > pad->size) {
diff = (pad->position - pad->size) / bpf;
pad->position = pad->size;
}
pad->output_offset += diff;
if (pad->position == pad->size) {
GstBuffer *buf;
/* Buffer done, drop it */
gst_buffer_replace (&pad->buffer, NULL);
buf = gst_aggregator_pad_steal_buffer (aggpad);
if (buf)
gst_buffer_unref (buf);
dropped = TRUE;
continue;
}
}
if (pad->output_offset >= audiomixer->offset
&& pad->output_offset <
audiomixer->offset + audiomixer->blocksize && pad->buffer) {