From: Nicolas George <[email protected]>
---
libavformat/url.h | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/libavformat/url.h b/libavformat/url.h
index 265a8ab..66ce4a1 100644
--- a/libavformat/url.h
+++ b/libavformat/url.h
@@ -59,6 +59,19 @@ typedef struct URLProtocol {
* for those nested protocols.
*/
int (*url_open2)(URLContext *h, const char *url, int flags,
AVDictionary **options);
+
+ /**
+ * Read data from the protocol.
+ * If data is immediately available (even less than size), EOF is
+ * reached or an error occurs (including EINTR), return immediately,
+ * Otherwise:
+ * In non-blocking mode, return AVERROR(EAGAIN) immediately.
+ * In blocking mode, wait for data/EOF/error with a short timeout (0.1s),
+ * and return AVERROR(EAGAIN) on timeout.
+ * Checking interrupt_callback, looping on EINTR and EAGAIN and until
+ * enough data has been read is left to the calling function; see
+ * retry_transfer_wrapper in avio.c.
+ */
int (*url_read)( URLContext *h, unsigned char *buf, int size);
int (*url_write)(URLContext *h, const unsigned char *buf, int size);
int64_t (*url_seek)( URLContext *h, int64_t pos, int whence);
--
1.7.3.1
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