From 636d1caf0db5d206ee77fafb8749ea407927ecb5 Mon Sep 17 00:00:00 2001
From: Mark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>
Date: Wed, 29 Sep 2010 10:08:17 +0200
Subject: [PATCH] faad: tweak output buffer timestamping

In particular, avoid packetised input leading to initial to non-0 output ts.
---
 ext/faad/gstfaad.c | 30 +++++++++++++++++++++---------
 1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/ext/faad/gstfaad.c b/ext/faad/gstfaad.c
index 5e4570095b..527503a2b3 100644
--- a/ext/faad/gstfaad.c
+++ b/ext/faad/gstfaad.c
@@ -263,8 +263,8 @@ gst_faad_reset (GstFaad * faad)
   faad->packetised = FALSE;
   g_free (faad->channel_positions);
   faad->channel_positions = NULL;
-  faad->next_ts = 0;
-  faad->prev_ts = GST_CLOCK_TIME_NONE;
+  faad->next_ts = GST_CLOCK_TIME_NONE;
+  faad->prev_ts = 0;
   faad->bytes_in = 0;
   faad->sum_dur_out = 0;
   faad->error_count = 0;
@@ -698,8 +698,8 @@ gst_faad_sink_event (GstPad * pad, GstEvent * event)
             " - %" GST_TIME_FORMAT, GST_TIME_ARGS (new_start),
             GST_TIME_ARGS (new_end));
 
-        faad->next_ts = new_start;
-        faad->prev_ts = GST_CLOCK_TIME_NONE;
+        faad->next_ts = GST_CLOCK_TIME_NONE;
+        faad->prev_ts = new_start;
       }
 
       res = gst_pad_push_event (faad->srcpad, event);
@@ -1045,16 +1045,22 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
     next = FALSE;
   }
 
-  ts = gst_adapter_prev_timestamp (faad->adapter, NULL);
-  if (GST_CLOCK_TIME_IS_VALID (ts) && (ts != faad->prev_ts))
-    faad->prev_ts = faad->next_ts = ts;
-
   available = gst_adapter_available (faad->adapter);
   input_size = available;
-
   if (G_UNLIKELY (!available))
     goto out;
 
+  ts = gst_adapter_prev_timestamp (faad->adapter, NULL);
+  if (GST_CLOCK_TIME_IS_VALID (ts) && (ts != faad->prev_ts)) {
+    faad->prev_ts = ts;
+  } else {
+    /* nothing new */
+    ts = GST_CLOCK_TIME_NONE;
+  }
+
+  if (!GST_CLOCK_TIME_IS_VALID (faad->next_ts))
+    faad->next_ts = faad->prev_ts;
+
   input_data = (guchar *) gst_adapter_peek (faad->adapter, available);
 
   if (!faad->packetised) {
@@ -1211,6 +1217,12 @@ gst_faad_chain (GstPad * pad, GstBuffer * buffer)
         }
       }
     }
+
+    /* adjust to incoming new timestamp, if any, after decoder delay */
+    if (GST_CLOCK_TIME_IS_VALID (ts)) {
+      faad->next_ts = ts;
+      ts = GST_CLOCK_TIME_NONE;
+    }
   }
 
 out:
-- 
2.34.1