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avcodec/utils: Warn the user about the lack of a lock manager if insufficient locks are detected 

A lock manager is not the only possibility to avoid open/close locking
issues but its easier and more robust than maintaining a lot of lock/unlock
calls.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-07-24 01:04:24 +02:00
parent 55db06af64
commit 274a50ab57
1 changed files with 2 additions and 0 deletions
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2
libavcodec/utils.c
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@ -3073,6 +3073,8 @@ int ff_lock_avcodec(AVCodecContext *log_ctx)
entangled_thread_counter++;
if (entangled_thread_counter != 1) {
av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking around avcodec_open/close()\n");
if (!lockmgr_cb)
av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
ff_avcodec_locked = 1;
ff_unlock_avcodec();
return AVERROR(EINVAL);