[FFmpeg-devel] [PATCH v4 3/6] ogg/opus: implement header packet skip in chained ogg bitstreams.

[Romain Beauxis]

---
 libavformat/oggdec.c                     |  4 ----
 libavformat/oggparseopus.c               | 11 +++++++++++
 tests/ref/fate/ogg-opus-chained-meta.txt |  1 -
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 9baf8040a9..5557eb4a14 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -239,10 +239,6 @@ static int ogg_replace_stream(AVFormatContext *s, uint32_t serial, char *magic,
     os->start_trimming = 0;
     os->end_trimming = 0;
 
-    /* Chained files have extradata as a new packet */
-    if (codec == &ff_opus_codec)
-        os->header = -1;
-
     return i;
 }
 
diff --git a/libavformat/oggparseopus.c b/libavformat/oggparseopus.c
index 218e9df581..f54a9711df 100644
--- a/libavformat/oggparseopus.c
+++ b/libavformat/oggparseopus.c
@@ -125,6 +125,17 @@ static int opus_packet(AVFormatContext *avf, int idx)
         return AVERROR_INVALIDDATA;
     }
 
+     if (os->psize > 8 && !memcmp(packet, "OpusHead", 8)) {
+        if ((ret = ff_alloc_extradata(st->codecpar, os->psize)) < 0)
+            return ret;
+
+        memcpy(st->codecpar->extradata, packet, os->psize);
+        return 1;
+    }
+
+    if (os->psize > 8 && !memcmp(packet, "OpusTags", 8))
+        return 1;
+
     if ((!os->lastpts || os->lastpts == AV_NOPTS_VALUE) && !(os->flags & OGG_FLAG_EOS)) {
         int seg, d;
         int duration;
diff --git a/tests/ref/fate/ogg-opus-chained-meta.txt b/tests/ref/fate/ogg-opus-chained-meta.txt
index fc84b8b703..addc41c1eb 100644
--- a/tests/ref/fate/ogg-opus-chained-meta.txt
+++ b/tests/ref/fate/ogg-opus-chained-meta.txt
@@ -13,7 +13,6 @@ Stream ID: 0, frame PTS: 3528, metadata: N/A
 Stream ID: 0, packet PTS: 4488, packet DTS: 4488
 Stream ID: 0, frame PTS: 4488, metadata: N/A
 Stream ID: 0, packet PTS: -312, packet DTS: -312
-Stream ID: 0, new metadata: encoder=Lavc61.19.100 libopus;Lavc61.19.100 libopus:title=First Stream;Second Stream
 Stream ID: 0, frame PTS: -312, metadata: N/A
 Stream ID: 0, packet PTS: 648, packet DTS: 648
 Stream ID: 0, frame PTS: 648, metadata: N/A
-- 
2.39.5 (Apple Git-154)