asfdec: fix returned error codes

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/asfdec.c

@@ -580,7 +580,7 @@ static int asf_read_header(AVFormatContext *s)
 
     ff_get_guid(pb, &g);
     if (ff_guidcmp(&g, &ff_asf_header))
-        return -1;
+        return AVERROR_INVALIDDATA;
     avio_rl64(pb);
     avio_rl32(pb);
     avio_r8(pb);
@@ -604,7 +604,7 @@ static int asf_read_header(AVFormatContext *s)
             break;
         }
         if (gsize < 24)
-            return -1;
+            return AVERROR_INVALIDDATA;
         if (!ff_guidcmp(&g, &ff_asf_file_header)) {
             int ret = asf_read_file_properties(s, gsize);
             if (ret < 0)
@@ -632,7 +632,7 @@ static int asf_read_header(AVFormatContext *s)
         } else if (!ff_guidcmp(&g, &ff_asf_marker_header)) {
             asf_read_marker(s, gsize);
         } else if (url_feof(pb)) {
-            return -1;
+            return AVERROR_EOF;
         } else {
             if (!s->keylen) {
                 if (!ff_guidcmp(&g, &ff_asf_content_encryption)) {
@@ -665,7 +665,7 @@ static int asf_read_header(AVFormatContext *s)
     avio_r8(pb);
     avio_r8(pb);
     if (url_feof(pb))
-        return -1;
+        return AVERROR_EOF;
     asf->data_offset = avio_tell(pb);
     asf->packet_size_left = 0;
 
@@ -758,7 +758,7 @@ static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
         if (d || e) {
             if (!url_feof(pb))
                 av_log(s, AV_LOG_ERROR, "ff asf bad non zero\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
         c= avio_r8(pb);
         d= avio_r8(pb);
@@ -777,11 +777,11 @@ static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
     //the following checks prevent overflows and infinite loops
     if(!packet_length || packet_length >= (1U<<29)){
         av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, avio_tell(pb));
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     if(padsize >= packet_length){
         av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, avio_tell(pb));
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     asf->packet_timestamp = avio_rl32(pb);
@@ -800,7 +800,7 @@ static int ff_asf_get_packet(AVFormatContext *s, AVIOContext *pb)
         av_log(s, AV_LOG_ERROR,
                "invalid packet header length %d for pktlen %d-%d at %"PRId64"\n",
                rsize, packet_length, padsize, avio_tell(pb));
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     asf->packet_size_left = packet_length - padsize - rsize;
     if (packet_length < asf->hdr.min_pktsize)
@@ -830,13 +830,13 @@ static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
 //printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size);
     if (rsize+asf->packet_replic_size > asf->packet_size_left) {
         av_log(s, AV_LOG_ERROR, "packet_replic_size %d is invalid\n", asf->packet_replic_size);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     if (asf->packet_replic_size >= 8) {
         asf->packet_obj_size = avio_rl32(pb);
         if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
             av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
         asf->packet_frag_timestamp = avio_rl32(pb); // timestamp
         if(asf->packet_replic_size >= 8+38+4){
@@ -864,17 +864,17 @@ static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
         rsize++;
     }else if(asf->packet_replic_size!=0){
         av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     if (asf->packet_flags & 0x01) {
         DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
         if (rsize > asf->packet_size_left) {
             av_log(s, AV_LOG_ERROR, "packet_replic_size is invalid\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         } else if(asf->packet_frag_size > asf->packet_size_left - rsize){
             if (asf->packet_frag_size > asf->packet_size_left - rsize + asf->packet_padsize) {
                 av_log(s, AV_LOG_ERROR, "packet_frag_size is invalid (%d-%d)\n", asf->packet_size_left, rsize);
-                return -1;
+                return AVERROR_INVALIDDATA;
             } else {
                 int diff = asf->packet_frag_size - (asf->packet_size_left - rsize);
                 asf->packet_size_left += diff;
@@ -889,7 +889,7 @@ static int asf_read_frame_header(AVFormatContext *s, AVIOContext *pb){
     if (asf->packet_replic_size == 1) {
         asf->packet_multi_size = asf->packet_frag_size;
         if (asf->packet_multi_size > asf->packet_size_left)
-            return -1;
+            return AVERROR_INVALIDDATA;
     }
     asf->packet_size_left -= rsize;
     //printf("___objsize____  %d   %d    rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);