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Non-blocking protocols: flag and documentation

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Signed-off-by: Nicolas George <nicolas.george@normalesup.org>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit fe174fc8fc)
This commit is contained in:
Nicolas George 2011-02-04 19:12:36 +01:00 committed by Michael Niedermayer
parent e10976eb77
commit f4bd5800ac
2 changed files with 29 additions and 3 deletions
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3
doc/APIchanges
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@ -13,6 +13,9 @@ libavutil: 2009-03-08
API changes, most recent first:
2011-02-XX - XXXXXXX - lavf 52.XX.0 - avio.h
Add flag for non-blocking protocols: URL_FLAG_NONBLOCK
2011-02-04 - f124b08 - lavf 52.96.0 - avformat_free_context()
Add avformat_free_context() in avformat.h.

29
libavformat/avio.h
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@ -63,9 +63,32 @@ typedef struct URLPollEntry {
int revents;
} URLPollEntry;
#define URL_RDONLY 0
#define URL_WRONLY 1
#define URL_RDWR 2
/**
* @defgroup open_modes URL open modes
* The flags argument to url_open and cosins must be one of the following
* constants, optionally ORed with other flags.
* @{
*/
#define URL_RDONLY 0 /**< read-only */
#define URL_WRONLY 1 /**< write-only */
#define URL_RDWR 2 /**< read-write */
/**
* @}
*/
/**
* Use non-blocking mode.
* If this flag is set, operations on the context will return
* AVERROR(EAGAIN) if they can not be performed immediately.
* If this flag is not set, operations on the context will never return
* AVERROR(EAGAIN).
* Note that this flag does not affect the opening/connecting of the
* context. Connecting a protocol will always block if necessary (e.g. on
* network protocols) but never hang (e.g. on busy devices).
* Warning: non-blocking protocols is work-in-progress; this flag may be
* silently ignored.
*/
#define URL_FLAG_NONBLOCK 4
typedef int URLInterruptCB(void);