nsv: simplify probe function

[ffmpeg] / libavformat / mmf.c

diff --git a/libavformat/mmf.c b/libavformat/mmf.c
index fc6fcc3caa40968ac099862813ea36e3accc6736..89e33b4ce27fa0208e266dfab36d6aae7d1607fd 100644 (file)
--- a/libavformat/mmf.c
+++ b/libavformat/mmf.c
@@ -186,13 +186,13 @@ static int mmf_read_header(AVFormatContext *s,
     unsigned int tag;
     AVIOContext *pb = s->pb;
     AVStream *st;
-    int64_t file_size, size;
+    int64_t size;
     int rate, params;
 
     tag = avio_rl32(pb);
     if (tag != MKTAG('M', 'M', 'M', 'D'))
         return -1;
-    file_size = avio_rb32(pb);
+    avio_skip(pb, 4); /* file_size */
 
     /* Skip some unused chunks that may or may not be present */
     for(;; avio_skip(pb, size)) {
@@ -263,12 +263,10 @@ static int mmf_read_packet(AVFormatContext *s,
                            AVPacket *pkt)
 {
     MMFContext *mmf = s->priv_data;
-    AVStream *st;
     int ret, size;
 
     if (url_feof(s->pb))
         return AVERROR(EIO);
-    st = s->streams[0];
 
     size = MAX_SIZE;
     if(size > mmf->data_size)