1 files changed, 10 insertions, 12 deletions

diff --git a/contrib/ffmpeg/libavformat/ipmovie.c b/contrib/ffmpeg/libavformat/ipmovie.c
index 975bfd36b..311f29f49 100644
--- a/contrib/ffmpeg/libavformat/ipmovie.c
+++ b/contrib/ffmpeg/libavformat/ipmovie.c
@@ -507,8 +507,6 @@ static int process_ipmovie_chunk(IPMVEContext *s, ByteIOContext *pb,
 
 static int ipmovie_probe(AVProbeData *p)
 {
-    if (p->buf_size < IPMOVIE_SIGNATURE_SIZE)
-        return 0;
     if (strncmp(p->buf, IPMOVIE_SIGNATURE, IPMOVIE_SIGNATURE_SIZE) != 0)
         return 0;
 
@@ -518,8 +516,8 @@ static int ipmovie_probe(AVProbeData *p)
 static int ipmovie_read_header(AVFormatContext *s,
                                AVFormatParameters *ap)
 {
-    IPMVEContext *ipmovie = (IPMVEContext *)s->priv_data;
-    ByteIOContext *pb = &s->pb;
+    IPMVEContext *ipmovie = s->priv_data;
+    ByteIOContext *pb = s->pb;
     AVPacket pkt;
     AVStream *st;
     unsigned char chunk_preamble[CHUNK_PREAMBLE_SIZE];
@@ -541,7 +539,7 @@ static int ipmovie_read_header(AVFormatContext *s,
      * it; if it is the first video chunk, this is a silent file */
     if (get_buffer(pb, chunk_preamble, CHUNK_PREAMBLE_SIZE) !=
         CHUNK_PREAMBLE_SIZE)
-        return AVERROR_IO;
+        return AVERROR(EIO);
     chunk_type = AV_RL16(&chunk_preamble[2]);
     url_fseek(pb, -CHUNK_PREAMBLE_SIZE, SEEK_CUR);
 
@@ -553,7 +551,7 @@ static int ipmovie_read_header(AVFormatContext *s,
     /* initialize the stream decoders */
     st = av_new_stream(s, 0);
     if (!st)
-        return AVERROR_NOMEM;
+        return AVERROR(ENOMEM);
     av_set_pts_info(st, 33, 1, 90000);
     ipmovie->video_stream_index = st->index;
     st->codec->codec_type = CODEC_TYPE_VIDEO;
@@ -568,7 +566,7 @@ static int ipmovie_read_header(AVFormatContext *s,
     if (ipmovie->audio_type) {
         st = av_new_stream(s, 0);
         if (!st)
-            return AVERROR_NOMEM;
+            return AVERROR(ENOMEM);
         av_set_pts_info(st, 33, 1, 90000);
         ipmovie->audio_stream_index = st->index;
         st->codec->codec_type = CODEC_TYPE_AUDIO;
@@ -590,17 +588,17 @@ static int ipmovie_read_header(AVFormatContext *s,
 static int ipmovie_read_packet(AVFormatContext *s,
                                AVPacket *pkt)
 {
-    IPMVEContext *ipmovie = (IPMVEContext *)s->priv_data;
-    ByteIOContext *pb = &s->pb;
+    IPMVEContext *ipmovie = s->priv_data;
+    ByteIOContext *pb = s->pb;
     int ret;
 
     ret = process_ipmovie_chunk(ipmovie, pb, pkt);
     if (ret == CHUNK_BAD)
         ret = AVERROR_INVALIDDATA;
     else if (ret == CHUNK_EOF)
-        ret = AVERROR_IO;
+        ret = AVERROR(EIO);
     else if (ret == CHUNK_NOMEM)
-        ret = AVERROR_NOMEM;
+        ret = AVERROR(ENOMEM);
     else if (ret == CHUNK_VIDEO)
         ret = 0;
     else
@@ -611,7 +609,7 @@ static int ipmovie_read_packet(AVFormatContext *s,
 
 static int ipmovie_read_close(AVFormatContext *s)
 {
-//    IPMVEContext *ipmovie = (IPMVEContext *)s->priv_data;
+//    IPMVEContext *ipmovie = s->priv_data;
 
     return 0;
 }