[FFmpeg-cvslog] avcodec/dca: fix sync word search error condition

[foo86]

ffmpeg | branch: release/3.0 | foo86 <foobaz86 at gmail.com> | Mon May  2 23:44:47 2016 +0300| [08c21bcb5dfd609167327a7900be6292fd0e51c1] | committer: James Almer

avcodec/dca: fix sync word search error condition

This didn't actually check if sync word was found and always errored out
with "-err_detect explode" option enabled.

Signed-off-by: Michael Niedermayer <michael at niedermayer.cc>
(cherry picked from commit ce2f9fdb0a92956aedfa2c564d1374a2f1eebfbd)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=08c21bcb5dfd609167327a7900be6292fd0e51c1
---

 libavcodec/dca_core.c |   15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/libavcodec/dca_core.c b/libavcodec/dca_core.c
index d9f1a4c..19496e9 100644
--- a/libavcodec/dca_core.c
+++ b/libavcodec/dca_core.c
@@ -1900,9 +1900,10 @@ static int parse_optional_info(DCACoreDecoder *s)
                 }
             }
 
-            if (s->avctx->err_recognition & AV_EF_EXPLODE) {
+            if (!s->xch_pos) {
                 av_log(s->avctx, AV_LOG_ERROR, "XCH sync word not found\n");
-                return AVERROR_INVALIDDATA;
+                if (s->avctx->err_recognition & AV_EF_EXPLODE)
+                    return AVERROR_INVALIDDATA;
             }
             break;
 
@@ -1922,9 +1923,10 @@ static int parse_optional_info(DCACoreDecoder *s)
                 }
             }
 
-            if (s->avctx->err_recognition & AV_EF_EXPLODE) {
+            if (!s->x96_pos) {
                 av_log(s->avctx, AV_LOG_ERROR, "X96 sync word not found\n");
-                return AVERROR_INVALIDDATA;
+                if (s->avctx->err_recognition & AV_EF_EXPLODE)
+                    return AVERROR_INVALIDDATA;
             }
             break;
 
@@ -1947,9 +1949,10 @@ static int parse_optional_info(DCACoreDecoder *s)
                 }
             }
 
-            if (s->avctx->err_recognition & AV_EF_EXPLODE) {
+            if (!s->xxch_pos) {
                 av_log(s->avctx, AV_LOG_ERROR, "XXCH sync word not found\n");
-                return AVERROR_INVALIDDATA;
+                if (s->avctx->err_recognition & AV_EF_EXPLODE)
+                    return AVERROR_INVALIDDATA;
             }
             break;
         }