[FFmpeg-devel] [PATCH 3/4] avio: add url_set_nonblock

[Nicolas George]

Signed-off-by: Nicolas George <nicolas.george at normalesup.org>
---
 libavformat/avio.c |   13 +++++++++++++
 libavformat/avio.h |    7 +++++++
 2 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/libavformat/avio.c b/libavformat/avio.c
index 4d2848a..a433ebb 100644
--- a/libavformat/avio.c
+++ b/libavformat/avio.c
@@ -357,3 +357,16 @@ int64_t av_url_read_seek(URLContext *h,
         return AVERROR(ENOSYS);
     return h->prot->url_read_seek(h, stream_index, timestamp, flags);
 }
+
+int url_set_nonblock(URLContext *h, int nonblock)
+{
+    do {
+        int f = (h->flags & ~URL_FLAG_NONBLOCK) |
+                (nonblock ? URL_FLAG_NONBLOCK : 0);
+        if (h->prot->url_change_flags)
+            return h->prot->url_change_flags(h, f);
+        h->flags = f;
+        h = h->slave;
+    } while(h);
+    return 0;
+}
diff --git a/libavformat/avio.h b/libavformat/avio.h
index 2faf5b4..1509e10 100644
--- a/libavformat/avio.h
+++ b/libavformat/avio.h
@@ -249,6 +249,12 @@ void url_get_filename(URLContext *h, char *buf, int buf_size);
  */
 void url_set_interrupt_cb(URLInterruptCB *interrupt_cb);
 
+/**
+ * Set the non-blocking flag
+ * @return 0 on success; no error currently possible
+ */
+int url_set_nonblock(URLContext *h, int nonblock);
+
 /* not implemented */
 int url_poll(URLPollEntry *poll_table, int n, int timeout);
 
@@ -301,6 +307,7 @@ typedef struct URLProtocol {
     int (*url_get_file_handle)(URLContext *h);
     int priv_data_size;
     const AVClass *priv_data_class;
+    int (*url_change_flags)(URLContext *h, int new_flags);
 } URLProtocol;
 
 #if FF_API_REGISTER_PROTOCOL
-- 
1.7.2.3