mov: use forward declaration of a function instead of a table.

MSVC gives a compile error on the tentative definition of
mov_default_parse_table[].

libavformat/mov.c

@@ -64,7 +64,7 @@ typedef struct MOVParseTableEntry {
     int (*parse)(MOVContext *ctx, AVIOContext *pb, MOVAtom atom);
 } MOVParseTableEntry;
 
-static const MOVParseTableEntry mov_default_parse_table[];
+static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom);
 
 static int mov_metadata_track_or_disc_number(MOVContext *c, AVIOContext *pb,
                                              unsigned len, const char *key)
@@ -351,79 +351,6 @@ static int mov_read_chpl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     return 0;
 }
 
-static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
-{
-    int64_t total_size = 0;
-    MOVAtom a;
-    int i;
-
-    if (atom.size < 0)
-        atom.size = INT64_MAX;
-    while (total_size + 8 < atom.size && !pb->eof_reached) {
-        int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
-        a.size = atom.size;
-        a.type=0;
-        if (atom.size >= 8) {
-            a.size = avio_rb32(pb);
-            a.type = avio_rl32(pb);
-        }
-        av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
-                a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
-        total_size += 8;
-        if (a.size == 1) { /* 64 bit extended size */
-            a.size = avio_rb64(pb) - 8;
-            total_size += 8;
-        }
-        if (a.size == 0) {
-            a.size = atom.size - total_size;
-            if (a.size <= 8)
-                break;
-        }
-        a.size -= 8;
-        if (a.size < 0)
-            break;
-        a.size = FFMIN(a.size, atom.size - total_size);
-
-        for (i = 0; mov_default_parse_table[i].type; i++)
-            if (mov_default_parse_table[i].type == a.type) {
-                parse = mov_default_parse_table[i].parse;
-                break;
-            }
-
-        // container is user data
-        if (!parse && (atom.type == MKTAG('u','d','t','a') ||
-                       atom.type == MKTAG('i','l','s','t')))
-            parse = mov_read_udta_string;
-
-        if (!parse) { /* skip leaf atoms data */
-            avio_skip(pb, a.size);
-        } else {
-            int64_t start_pos = avio_tell(pb);
-            int64_t left;
-            int err = parse(c, pb, a);
-            if (err < 0)
-                return err;
-            if (c->found_moov && c->found_mdat &&
-                ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
-                 start_pos + a.size == avio_size(pb))) {
-                if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
-                    c->next_root_atom = start_pos + a.size;
-                return 0;
-            }
-            left = a.size - avio_tell(pb) + start_pos;
-            if (left > 0) /* skip garbage at atom end */
-                avio_skip(pb, left);
-        }
-
-        total_size += a.size;
-    }
-
-    if (total_size < atom.size && atom.size < 0x7ffff)
-        avio_skip(pb, atom.size - total_size);
-
-    return 0;
-}
-
 static int mov_read_dref(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 {
     AVStream *st;
@@ -2563,6 +2490,79 @@ static const MOVParseTableEntry mov_default_parse_table[] = {
 { 0, NULL }
 };
 
+static int mov_read_default(MOVContext *c, AVIOContext *pb, MOVAtom atom)
+{
+    int64_t total_size = 0;
+    MOVAtom a;
+    int i;
+
+    if (atom.size < 0)
+        atom.size = INT64_MAX;
+    while (total_size + 8 < atom.size && !pb->eof_reached) {
+        int (*parse)(MOVContext*, AVIOContext*, MOVAtom) = NULL;
+        a.size = atom.size;
+        a.type=0;
+        if (atom.size >= 8) {
+            a.size = avio_rb32(pb);
+            a.type = avio_rl32(pb);
+        }
+        av_dlog(c->fc, "type: %08x '%.4s' parent:'%.4s' sz: %"PRId64" %"PRId64" %"PRId64"\n",
+                a.type, (char*)&a.type, (char*)&atom.type, a.size, total_size, atom.size);
+        total_size += 8;
+        if (a.size == 1) { /* 64 bit extended size */
+            a.size = avio_rb64(pb) - 8;
+            total_size += 8;
+        }
+        if (a.size == 0) {
+            a.size = atom.size - total_size;
+            if (a.size <= 8)
+                break;
+        }
+        a.size -= 8;
+        if (a.size < 0)
+            break;
+        a.size = FFMIN(a.size, atom.size - total_size);
+
+        for (i = 0; mov_default_parse_table[i].type; i++)
+            if (mov_default_parse_table[i].type == a.type) {
+                parse = mov_default_parse_table[i].parse;
+                break;
+            }
+
+        // container is user data
+        if (!parse && (atom.type == MKTAG('u','d','t','a') ||
+                       atom.type == MKTAG('i','l','s','t')))
+            parse = mov_read_udta_string;
+
+        if (!parse) { /* skip leaf atoms data */
+            avio_skip(pb, a.size);
+        } else {
+            int64_t start_pos = avio_tell(pb);
+            int64_t left;
+            int err = parse(c, pb, a);
+            if (err < 0)
+                return err;
+            if (c->found_moov && c->found_mdat &&
+                ((!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX) ||
+                 start_pos + a.size == avio_size(pb))) {
+                if (!pb->seekable || c->fc->flags & AVFMT_FLAG_IGNIDX)
+                    c->next_root_atom = start_pos + a.size;
+                return 0;
+            }
+            left = a.size - avio_tell(pb) + start_pos;
+            if (left > 0) /* skip garbage at atom end */
+                avio_skip(pb, left);
+        }
+
+        total_size += a.size;
+    }
+
+    if (total_size < atom.size && atom.size < 0x7ffff)
+        avio_skip(pb, atom.size - total_size);
+
+    return 0;
+}
+
 static int mov_probe(AVProbeData *p)
 {
     unsigned int offset;