[FFmpeg-devel] qt-faststart not works on 64-bit box

[Surf Chen]

The fseeko works incorrectly on 64-bit box.

Below shows what the problem is. If change the fseeko to fseek,all goes well.

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#define ATOM_PREAMBLE_SIZE 8
int main(int argc, char *argv[]) {
   unsigned char *ftyp_atom = 0;
   unsigned char atom_bytes[ATOM_PREAMBLE_SIZE];
   FILE *infile = fopen(argv[1], "rb");
   ftyp_atom = malloc(32);
   fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile);
   fseeko(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR);
   int rs=fread(ftyp_atom, 2, 1, infile);
   printf ("rs:%d\n",rs);
   return 0;
}

The fseeko is used in qt-faststart.c,cause it not works on 64-bit
box.Here is my patch to work it out.Simply replace fseeko with fseek.

Index: qt-faststart.c
===================================================================
--- qt-faststart.c  (revision 13198)
+++ qt-faststart.c  (working copy)
@@ -130,7 +130,7 @@
                 fclose(infile);
                 return 1;
             }
-            fseeko(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR);
+            fseek(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR);
             if (fread(ftyp_atom, atom_size, 1, infile) != 1) {
                 perror(argv[1]);
                 free(ftyp_atom);
@@ -147,9 +147,9 @@
                 break;
             }
             atom_size = BE_64(&atom_bytes[0]);
-            fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE * 2, SEEK_CUR);
+            fseek(infile, atom_size - ATOM_PREAMBLE_SIZE * 2, SEEK_CUR);
         } else {
-            fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE, SEEK_CUR);
+            fseek(infile, atom_size - ATOM_PREAMBLE_SIZE, SEEK_CUR);
         }
     }

@@ -161,7 +161,7 @@

     /* moov atom was, in fact, the last atom in the chunk; load the whole
      * moov atom */
-    fseeko(infile, -atom_size, SEEK_END);
+    fseek(infile, -atom_size, SEEK_END);
     last_offset = ftello(infile);
     moov_atom_size = atom_size;
     moov_atom = malloc(moov_atom_size);