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List: gstreamer-cvs
Subject: [gst-cvs] gst-plugins-bad: faad: reverse playback;
From: mnauw () kemper ! freedesktop ! org (Mark Nauwelaerts)
Date: 2010-09-29 9:31:39
Message-ID: 20100929093139.E377B10056 () kemper ! freedesktop ! org
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Module: gst-plugins-bad
Branch: master
Commit: de97a994ba87b0b3e361532878e4366842d85f3c
URL: http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/?id=de97a994ba87b0b3e361532878e4366842d85f3c
Author: Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
Date: Wed Sep 29 10:13:06 2010 +0200
faad: reverse playback; cater for decoder delay
... thereby actually using the gather and decode queues.
---
ext/faad/gstfaad.c | 30 ++++++++++++++++++++++++++++++
1 files changed, 30 insertions(+), 0 deletions(-)
diff --git a/ext/faad/gstfaad.c b/ext/faad/gstfaad.c
index 527503a..8e4e614 100644
--- a/ext/faad/gstfaad.c
+++ b/ext/faad/gstfaad.c
@@ -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 */
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