avio: Add avio_read wrapper to simplify error checking

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/libavformat/aviobuf.c b/libavformat/aviobuf.c
index 59f807cbd3..d3e3452954 100644
--- a/libavformat/aviobuf.c
+++ b/libavformat/aviobuf.c
@@ -496,6 +496,14 @@ int avio_read(AVIOContext *s, unsigned char *buf, int size)
     return size1 - size;
 }
 
+int ffio_read_size(AVIOContext *s, unsigned char *buf, int size)
+{
+    int ret = avio_read(s, buf, size);
+    if (ret != size)
+        return AVERROR_INVALIDDATA;
+    return ret;
+}
+
 int ffio_read_indirect(AVIOContext *s, unsigned char *buf, int size, const unsigned char **data)
 {
     if (s->buf_end - s->buf_ptr >= size && !s->write_flag) {