[vlc-commits] [Git][videolan/vlc][master] avcodec: audio: fix decoding opus packets

[Felix Paul Kühne (@fkuehne)]

Felix Paul Kühne pushed to branch master at VideoLAN / VLC


Commits:
04f65f58 by Alexandre Janniaux at 2026-07-06T16:11:58+02:00
avcodec: audio: fix decoding opus packets

Extract the first Xiph header via xiph_SplitHeaders() and feed only that
to libavcodec, just like it's done in the opus.c decoder.

This fixes the playback when the opus decoder is not built and only
avcodec is present in the build.

- - - - -


1 changed file:

- modules/codec/avcodec/audio.c


Changes:

=====================================
modules/codec/avcodec/audio.c
=====================================
@@ -36,6 +36,7 @@
 #include <vlc_avcodec.h>
 
 #include "avcodec.h"
+#include "../../demux/xiph.h"
 
 #include <libavcodec/avcodec.h>
 #include <libavutil/mem.h>
@@ -99,6 +100,20 @@ static void InitDecoderConfig( decoder_t *p_dec, AVCodecContext *p_context )
             if( i_size < 36 )
                 i_size = 0;
         }
+        else if( p_dec->fmt_in->i_codec == VLC_CODEC_OPUS &&
+                 i_size > 21 && !memcmp( &p_src[2], "OpusHead", 8 ) )
+        {
+            /* see opus.c decoder */
+            size_t hdr_size[XIPH_MAX_HEADER_COUNT];
+            const void *hdr[XIPH_MAX_HEADER_COUNT];
+            size_t i_count;
+            if( !xiph_SplitHeaders( hdr_size, hdr, &i_count,
+                                    i_size, p_src ) && i_count >= 1 )
+            {
+                i_offset = (const uint8_t *)hdr[0] - p_src;
+                i_size = hdr_size[0];
+            }
+        }
 
         if( i_size > 0 )
         {



View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/04f65f5853eb8ea8cd6985d37db5e83f1b969123

-- 
View it on GitLab: https://code.videolan.org/videolan/vlc/-/commit/04f65f5853eb8ea8cd6985d37db5e83f1b969123
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