[FFmpeg-devel] [PATCH] avformat/matroskadec: retain error codes in matroska_resync() and matroska_read_packet()

[Sophia Wang]

Signed-off-by: Sophia Wang <skw at google.com>
---
 libavformat/matroskadec.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c
index d07a092..8c809ad 100644
--- a/libavformat/matroskadec.c
+++ b/libavformat/matroskadec.c
@@ -738,13 +738,16 @@ static int matroska_read_close(AVFormatContext *s);
 static int matroska_resync(MatroskaDemuxContext *matroska, int64_t last_pos)
 {
     AVIOContext *pb = matroska->ctx->pb;
+    int64_t ret;
     uint32_t id;
     matroska->current_id = 0;
     matroska->num_levels = 0;
 
     /* seek to next position to resync from */
-    if (avio_seek(pb, last_pos + 1, SEEK_SET) < 0)
-        goto eof;
+    if ((ret = avio_seek(pb, last_pos + 1, SEEK_SET)) < 0) {
+        matroska->done = 1;
+        return ret;
+    }
 
     id = avio_rb32(pb);
 
@@ -760,7 +763,6 @@ static int matroska_resync(MatroskaDemuxContext *matroska, int64_t last_pos)
         id = (id << 8) | avio_r8(pb);
     }
 
-eof:
     matroska->done = 1;
     return AVERROR_EOF;
 }
@@ -3322,13 +3324,16 @@ static int matroska_parse_cluster(MatroskaDemuxContext *matroska)
 static int matroska_read_packet(AVFormatContext *s, AVPacket *pkt)
 {
     MatroskaDemuxContext *matroska = s->priv_data;
+    int ret;
 
     while (matroska_deliver_packet(matroska, pkt)) {
         int64_t pos = avio_tell(matroska->ctx->pb);
         if (matroska->done)
             return AVERROR_EOF;
-        if (matroska_parse_cluster(matroska) < 0)
-            matroska_resync(matroska, pos);
+        if (matroska_parse_cluster(matroska) < 0) {
+            if ((ret = matroska_resync(matroska, pos)) < 0)
+                return ret;
+        }
     }
 
     return 0;
-- 
2.8.0.rc3.226.g39d4020