stream: add STREAM_READ_FILE_FLAGS_DEFAULT

This is the default set of flags used by stream_read_file().
Useful for doing flag customization for stream_read_file2().

stream/stream.c

@@ -856,9 +856,8 @@ struct bstr stream_read_complete(struct stream *s, void *talloc_ctx,
 struct bstr stream_read_file(const char *filename, void *talloc_ctx,
                              struct mpv_global *global, int max_size)
 {
-    int flags = STREAM_ORIGIN_DIRECT | STREAM_READ | STREAM_LOCAL_FS_ONLY |
-                STREAM_LESS_NOISE;
-    return stream_read_file2(filename, talloc_ctx, flags, global, max_size);
+    return stream_read_file2(filename, talloc_ctx, STREAM_READ_FILE_FLAGS_DEFAULT,
+                             global, max_size);
 }
 
 struct bstr stream_read_file2(const char *filename, void *talloc_ctx,

stream/stream.h

@@ -55,6 +55,10 @@
 #define STREAM_LESS_NOISE         (1 << 6) // try to log errors only
 #define STREAM_ALLOW_PARTIAL_READ (1 << 7) // allows partial read with stream_read_file()
 
+// Default flags used by stream_read_file().
+#define STREAM_READ_FILE_FLAGS_DEFAULT \
+    (STREAM_ORIGIN_DIRECT | STREAM_READ | STREAM_LOCAL_FS_ONLY | STREAM_LESS_NOISE)
+
 // end flags for stream_open_ext (the naming convention sucks)
 
 #define STREAM_UNSAFE -3