[FFmpeg-cvslog] avcodec: Remove lock manager API

[Andreas Rheinhardt]

ffmpeg | branch: master | Andreas Rheinhardt <andreas.rheinhardt at gmail.com> | Thu Feb 25 19:37:16 2021 +0100| [e8fdb0db16c5ca8ad382b20874b4a454be6b79ae] | committer: James Almer

avcodec: Remove lock manager API

Deprecated in a04c2c707de2ce850f79870e84ac9d7ec7aa9143.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
Signed-off-by: James Almer <jamrial at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e8fdb0db16c5ca8ad382b20874b4a454be6b79ae
---

 libavcodec/avcodec.c |  7 -------
 libavcodec/avcodec.h | 43 -------------------------------------------
 libavcodec/version.h |  3 ---
 3 files changed, 53 deletions(-)

diff --git a/libavcodec/avcodec.c b/libavcodec/avcodec.c
index 24f6922d4f..01fe8a6d97 100644
--- a/libavcodec/avcodec.c
+++ b/libavcodec/avcodec.c
@@ -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;
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 0e86064ccb..7c6f5c1fc0 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -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.
diff --git a/libavcodec/version.h b/libavcodec/version.h
index a43c44961e..e76ec915f9 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -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