[FFmpeg-cvslog] caf: add an Opus tag

[Anton Khirnov]

ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Sat Jul  1 10:49:58 2017 +0200| [48a5c35346aeded1c65b8709bbb085fa4e705c91] | committer: Anton Khirnov

caf: add an Opus tag

CC: libav-stable at libav.org

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=48a5c35346aeded1c65b8709bbb085fa4e705c91
---

 libavformat/caf.c    | 1 +
 libavformat/cafdec.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/libavformat/caf.c b/libavformat/caf.c
index cf128d5624..c299cad01b 100644
--- a/libavformat/caf.c
+++ b/libavformat/caf.c
@@ -49,6 +49,7 @@ const AVCodecTag ff_codec_caf_tags[] = {
     { AV_CODEC_ID_QCELP,           MKBETAG('Q','c','l','p') },
     { AV_CODEC_ID_QDM2,            MKBETAG('Q','D','M','2') },
     { AV_CODEC_ID_QDM2,            MKBETAG('Q','D','M','C') },
+    { AV_CODEC_ID_OPUS,            MKBETAG('o','p','u','s') },
   /* currently unsupported codecs */
   /*{ AC-3 over S/PDIF          MKBETAG('c','a','c','3') },*/
   /*{ MPEG4CELP                 MKBETAG('c','e','l','p') },*/
diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c
index efc8c49c4a..d6b6007a1d 100644
--- a/libavformat/cafdec.c
+++ b/libavformat/cafdec.c
@@ -156,6 +156,14 @@ static int read_kuki_chunk(AVFormatContext *s, int64_t size)
             avio_skip(pb, size - ALAC_NEW_KUKI);
         }
         st->codecpar->extradata_size = ALAC_HEADER;
+    } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
+        // The data layout for Opus is currently unknown, so we do not export
+        // extradata at all. Multichannel streams are not supported.
+        if (st->codecpar->channels > 2) {
+            avpriv_request_sample(s, "multichannel Opus in CAF");
+            return AVERROR_PATCHWELCOME;
+        }
+        avio_skip(pb, size);
     } else {
         st->codecpar->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
         if (!st->codecpar->extradata)