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faad: reverse playback; cater for decoder delay

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... thereby actually using the gather and decode queues.
This commit is contained in:
Mark Nauwelaerts 2010-09-29 10:13:06 +02:00
parent 636d1caf0d
commit de97a994ba
1 changed files with 30 additions and 0 deletions
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30
ext/faad/gstfaad.c
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@ -528,6 +528,12 @@ clear_queued (GstFaad * faad)
g_list_foreach (faad->queued, (GFunc) gst_mini_object_unref, NULL);
g_list_free (faad->queued);
faad->queued = NULL;
g_list_foreach (faad->gather, (GFunc) gst_mini_object_unref, NULL);
g_list_free (faad->gather);
faad->gather = NULL;
g_list_foreach (faad->decode, (GFunc) gst_mini_object_unref, NULL);
g_list_free (faad->decode);
faad->decode = NULL;
}
static GstFlowReturn
@ -556,10 +562,24 @@ gst_faad_drain (GstFaad * faad)
{
GstFlowReturn ret = GST_FLOW_OK;
GST_DEBUG_OBJECT (faad, "draining");
if (faad->segment.rate < 0.0) {
/* also decode tail = head of previous fragment to fill this one */
while (faad->decode) {
GstBuffer *buf = GST_BUFFER_CAST (faad->decode->data);
GST_DEBUG_OBJECT (faad, "processing delayed decode buffer");
gst_faad_chain (faad->sinkpad, buf);
faad->decode = g_list_delete_link (faad->decode, faad->decode);
}
/* if we have some queued frames for reverse playback, flush
* them now */
ret = flush_queued (faad);
/* move non-decoded leading buffers gathered in previous run
* to decode queue for this run */
faad->decode = g_list_reverse (faad->gather);
faad->gather = NULL;
} else {
/* squeeze any possible remaining frames that are pending sync */
gst_faad_chain (faad->sinkpad, NULL);
@ -1216,6 +1236,16 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
goto out;
}
}
} else {
if (faad->packetised && faad->segment.rate < 0.0) {
/* leading non-decoded frames used as tail
* for next preceding fragment */
outbuf = gst_adapter_take_buffer (faad->adapter, available);
available = 0;
outbuf = gst_buffer_make_metadata_writable (outbuf);
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DISCONT);
faad->gather = g_list_prepend (faad->gather, outbuf);
}
}
/* adjust to incoming new timestamp, if any, after decoder delay */