Deadline for the blocking libav I/O of one AVFormatContext. More...

Detailed Description

Deadline for the blocking libav I/O of one AVFormatContext.

avformat_open_input, avformat_find_stream_info and av_read_frame have no timeout of their own: on a device that stops answering they block until the kernel gives up, which for some USB cameras never happens. The only way out is the interrupt callback, which libav polls from inside those calls.

install() must be called on a freshly allocated context, before avformat_open_input: libav frees the context on failure, so a retry has to allocate and install again.

Safe to arm from the thread doing the I/O and to abort from another one.

Public Types
using	clock = std::chrono::steady_clock

Public Member Functions
void	install (AVFormatContext &ctx) noexcept

void	arm (std::chrono::milliseconds timeout) noexcept

void	disarm () noexcept

void	abort () noexcept
	Unblocks the pending call and every subsequent one until reset()

void	reset () noexcept

bool	aborted () const noexcept

bool	expired () const noexcept

The documentation for this class was generated from the following file:

LibavInterrupt.hpp

Detailed Description

Public Types

Public Member Functions