[libdvdread] - fix partial reads in file_read - fixes iso playback on ios (which doesn't use libdvdcss and therefore hits this bug)

1 files changed, 4 insertions, 1 deletions

diff --git a/lib/libdvd/libdvdread/src/dvd_input.c b/lib/libdvd/libdvdread/src/dvd_input.c
index 4a0252431a..7efff01acf 100644
--- a/lib/libdvd/libdvdread/src/dvd_input.c
+++ b/lib/libdvd/libdvdread/src/dvd_input.c
@@ -217,12 +217,14 @@ static int file_read(dvd_input_t dev, void *buffer, int blocks, int flags)
 {
   size_t len;
   ssize_t ret;
+  char *buf;
 
+  buf = (char*) buffer;
   len = (size_t)blocks * DVD_VIDEO_LB_LEN;
 
   while(len > 0) {
 
-    ret = read(dev->fd, buffer, len);
+    ret = read(dev->fd, buf, len);
 
     if(ret < 0) {
       /* One of the reads failed, too bad.  We won't even bother
@@ -241,6 +243,7 @@ static int file_read(dvd_input_t dev, void *buffer, int blocks, int flags)
       return (int) (bytes / DVD_VIDEO_LB_LEN);
     }
 
+    buf += ret;
     len -= ret;
   }