![]() ![]() vlc_cond_signal() Signals one thread waiting on a condition variable. vlc_cond_init_daytime() Creates a condition variable using the realtime clock / wall clock for timeouts. Condition variable (vlc_cond_t) vlc_cond_init() Creates a condition variable using the monotonic clock ( mdate()) for timeouts. vlc_mutex_trylock() Locks a mutex if it is not already locked, or returns an error otherwise. vlc_mutex_lock() Locks a mutex, waiting if required. vlc_mutex_init_recursive() Creates a recursive mutex (discouraged). vlc_join() Waits for a thread to terminate and releases its resources Mutual exclusion (vlc_mutex_t) vlc_mutex_init() Creates a non-recursive mutex. Threads (vlc_thread_t) vlc_clone() Creates a thread. However, for portability reasons, VLC does not use pthread_* functions directly, but a similar custom set of APIs. VLC's threading structure is modeled after POSIX threads ( pthread). Multi-process approach wasn't chosen either, because multi-process decoders usually imply more overhead (problems of shared memory) and communication between processes is harder. The single-threaded approach would have introduced too much complexity because decoder preemptibility and scheduling would then be a mastermind (for instance decoders and outputs have to be separated, otherwise it cannot be warrantied that a frame will be played at the exact presentation time). In the source code, modules are usually located inside the modules/ subdirectory. Modules can also be built directly into the application which uses libVLC, for instance when VLC is on an operating system that does not have support for dynamically loadable code. Plugins modules are loaded and unloaded dynamically by functions in src/modules/modules.c. (See VLC Modules loading mechanism).Įvery module offers different features that will best suit a particular use-case or a particular environment.īesides, most portability of VLC results from writing audio_output/ video_output/ interface modules specific to the platform. Modules are loaded accordingly at runtime depending on the necessity. So, VLC uses modules to do most of the work, at every stage of the pipeline. ![]() It uses modules to do most of the work at every stage (various muxers, demuxers, decoders, filters and outputs).Įven the interfaces are plugins for libVLC. The core framework is used to do the "wiring" and the media processing, from input (files, network streams) to output (audio or video, on a screen or a network). VLC is, in fact, a complete multimedia framework (like DirectShow or GStreamer) where you can load and plug-in many modules dynamically, depending on the necessity. ![]() One of the main concepts in VLC is " modularity". External applications are built against libVLC. ![]() Modules are linked with libvlccore, to interact with the core. On top of libVLCcore, there is libVLC that allow external application builders to access to all features of the core. It manages the threads, the modules (codecs, demuxers, etc.), the modules' layers, the clocks, the playlist and all low-level control in VLC.įor example, it is responsible for the synchronization management between all the audio, video and subtitle tracks. Additionally, keep your anti-virus up to date so that it is ready to combat any viruses if it ever came across one.The core of VLC media player is called libVLCcore. If you want, you could try players like Media Player Classic, or stick to Windows Media Player, till the VLC Player bug is completely fixed, just to be on the safer side. This includes video or movies downloaded from torrent sites or websites that promote pirated content, or even shared by someone on a pen drive (since you can't make out whether the source of download for that file is trustworthy). Sure, vulnerabilities exist, but what to do when you desperately need to play a video? If you wish to stay safe, just don't play video files from untrusted sources and you're pretty much good to go. Image Courtesy: Reuters VLC Vulnerability: How To Stay Safe? Something similar has happened with VLC in the past as well, but this time the situation seems more grave. VLC has been working on a fix to this glitch for a few weeks now. Surprisingly, no hacker has taken advantage of this glitch as of now. This issue was spotted on the latest versions of VLC running on Windows, Linux and Unix-based systems. So if you're someone who downloads videos or movies illegally using torrentsor through other untrusted sources (which you shouldn't be doing in the first place), you sit right in the centre of the crosshairs. How Hacker Gains Access Through VLC Player?Īccording to the discovery by CERT-Bund, a malicious MKV video file is all a hacker needs to gain access to one's computer. How Hacker Gains Access Through VLC Player?. ![]()
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