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avcodec: Remove lock manager API 

Deprecated in a04c2c707d.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2021-02-25 19:37:16 +01:00 committed by James Almer
parent d1d8a81874
commit e8fdb0db16
3 changed files with 0 additions and 53 deletions
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7
libavcodec/avcodec.c
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@ -102,13 +102,6 @@ static void unlock_avcodec(const AVCodec *codec)
ff_mutex_unlock(&codec_mutex);
}
#if FF_API_LOCKMGR
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
{
return 0;
}
#endif
static int64_t get_bit_rate(AVCodecContext *ctx)
{
int64_t bit_rate;

43
libavcodec/avcodec.h
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@ -3799,49 +3799,6 @@ attribute_deprecated
AVHWAccel *av_hwaccel_next(const AVHWAccel *hwaccel);
#endif
#if FF_API_LOCKMGR
/**
* Lock operation used by lockmgr
*
* @deprecated Deprecated together with av_lockmgr_register().
*/
enum AVLockOp {
AV_LOCK_CREATE, ///< Create a mutex
AV_LOCK_OBTAIN, ///< Lock the mutex
AV_LOCK_RELEASE, ///< Unlock the mutex
AV_LOCK_DESTROY, ///< Free mutex resources
};
/**
* Register a user provided lock manager supporting the operations
* specified by AVLockOp. The "mutex" argument to the function points
* to a (void *) where the lockmgr should store/get a pointer to a user
* allocated mutex. It is NULL upon AV_LOCK_CREATE and equal to the
* value left by the last call for all other ops. If the lock manager is
* unable to perform the op then it should leave the mutex in the same
* state as when it was called and return a non-zero value. However,
* when called with AV_LOCK_DESTROY the mutex will always be assumed to
* have been successfully destroyed. If av_lockmgr_register succeeds
* it will return a non-negative value, if it fails it will return a
* negative value and destroy all mutex and unregister all callbacks.
* av_lockmgr_register is not thread-safe, it must be called from a
* single thread before any calls which make use of locking are used.
*
* @param cb User defined callback. av_lockmgr_register invokes calls
* to this callback and the previously registered callback.
* The callback will be used to create more than one mutex
* each of which must be backed by its own underlying locking
* mechanism (i.e. do not use a single static object to
* implement your lock manager). If cb is set to NULL the
* lockmgr will be unregistered.
*
* @deprecated This function does nothing, and always returns 0. Be sure to
* build with thread support to get basic thread safety.
*/
attribute_deprecated
int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op));
#endif
/**
* @return a positive value if s is open (i.e. avcodec_open2() was called on it
* with no corresponding avcodec_close()), 0 otherwise.

3
libavcodec/version.h
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@ -87,9 +87,6 @@
#ifndef FF_API_USER_VISIBLE_AVHWACCEL
#define FF_API_USER_VISIBLE_AVHWACCEL (LIBAVCODEC_VERSION_MAJOR < 59)
#endif
#ifndef FF_API_LOCKMGR
#define FF_API_LOCKMGR (LIBAVCODEC_VERSION_MAJOR < 59)
#endif
#ifndef FF_API_UNSANITIZED_BITRATES
#define FF_API_UNSANITIZED_BITRATES (LIBAVCODEC_VERSION_MAJOR < 59)
#endif