avio: add avio_skip macro

This is a substitute for the url_fskip function that was deprecated by
commit 0300db8ad778a194b4a8ec98f6da3de5b41c46ee. avio_fskip is provided to
improve demuxer code readability. It distinguishes the act of skipping over
unknown or irrelevant bytes from the standard avio_seek operation.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

diff --git a/libavformat/avio.h b/libavformat/avio.h
index acdd0c1..a998808 100644 (file)
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -474,6 +474,12 @@ int avio_put_str16le(AVIOContext *s, const char *str);
 int64_t avio_seek(AVIOContext *s, int64_t offset, int whence);
 
 /**
+ * Skip given number of bytes forward
+ * @return new position or AVERROR.
+ */
+#define avio_skip(s, offset) avio_seek(s, offset, SEEK_CUR)
+
+/**
  * ftell() equivalent for AVIOContext.
  * @return position or AVERROR.
  */