lavf: return AVERROR_EOF rather than EIO on EOF

libavformat/anm.c

@@ -172,7 +172,7 @@ static int read_packet(AVFormatContext *s,
     int tmp, record_size;
 
     if (avio_feof(s->pb))
-        return AVERROR(EIO);
+        return AVERROR_EOF;
 
     if (anm->page < 0)
         return anm->page;

libavformat/dauddec.c

@@ -41,7 +41,7 @@ static int daud_packet(AVFormatContext *s, AVPacket *pkt) {
     AVIOContext *pb = s->pb;
     int ret, size;
     if (avio_feof(pb))
-        return AVERROR(EIO);
+        return AVERROR_EOF;
     size = avio_rb16(pb);
     avio_rb16(pb); // unknown
     ret = av_get_packet(pb, pkt, size);

libavformat/filmstripdec.c

@@ -86,7 +86,7 @@ static int read_packet(AVFormatContext *s,
     AVStream *st = s->streams[0];
 
     if (avio_feof(s->pb))
-        return AVERROR(EIO);
+        return AVERROR_EOF;
     pkt->dts = avio_tell(s->pb) / (st->codecpar->width * (int64_t)(st->codecpar->height + film->leading) * 4);
     pkt->size = av_get_packet(s->pb, pkt, st->codecpar->width * st->codecpar->height * 4);
     avio_skip(s->pb, st->codecpar->width * (int64_t) film->leading * 4);

libavformat/idroqdec.c

@@ -107,7 +107,7 @@ static int roq_read_packet(AVFormatContext *s,
     while (!packet_read) {
 
         if (avio_feof(s->pb))
-            return AVERROR(EIO);
+            return AVERROR_EOF;
 
         /* get the next chunk preamble */
         if ((ret = avio_read(pb, preamble, RoQ_CHUNK_PREAMBLE_SIZE)) !=

libavformat/sol.c

@@ -127,7 +127,8 @@ static int sol_read_packet(AVFormatContext *s,
     int ret;
 
     if (avio_feof(s->pb))
-        return AVERROR(EIO);
+        return AVERROR_EOF;
+
     ret= av_get_packet(s->pb, pkt, MAX_SIZE);
     if (ret < 0)
         return ret;

libavformat/vc1test.c

@@ -101,7 +101,7 @@ static int vc1t_read_packet(AVFormatContext *s,
     uint32_t pts;
 
     if(avio_feof(pb))
-        return AVERROR(EIO);
+        return AVERROR_EOF;
 
     frame_size = avio_rl24(pb);
     if(avio_r8(pb) & 0x80)