[FFmpeg-cvslog] avcodec/ac3_parser: recognize LE bitstream variant

[Paul B Mahol]

ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Fri Feb 21 22:31:07 2020 +0100| [9e0ddb5e80542d72059f9d817722a6e386ecc037] | committer: Paul B Mahol

avcodec/ac3_parser: recognize LE bitstream variant

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9e0ddb5e80542d72059f9d817722a6e386ecc037
---

 libavcodec/ac3_parser.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.c
index 1e203ae6ac..ba171653ef 100644
--- a/libavcodec/ac3_parser.c
+++ b/libavcodec/ac3_parser.c
@@ -201,6 +201,12 @@ static int ac3_sync(uint64_t state, AACAC3ParseContext *hdr_info,
     AC3HeaderInfo hdr;
     GetBitContext gbc;
 
+    if (tmp.u8[1] == 0x77 && tmp.u8[2] == 0x0b) {
+        FFSWAP(uint8_t, tmp.u8[1], tmp.u8[2]);
+        FFSWAP(uint8_t, tmp.u8[3], tmp.u8[4]);
+        FFSWAP(uint8_t, tmp.u8[5], tmp.u8[6]);
+    }
+
     init_get_bits(&gbc, tmp.u8+8-AC3_HEADER_SIZE, 54);
     err = ff_ac3_parse_header(&gbc, &hdr);