Method DeviceContext

examples/VulkanBenchmark.cpp:527–527

	bool RequestedHwDecode() const { return requested_hw_decode_; }
	bool UsingHwDecode() const { return decoded_hw_frames_; }
	AVBufferRef* DeviceContext() const { return hw_device_context_; }

	bool NextFrame(ScopedFrame& frame, double& decode_ms) {
		const auto start = Clock::now();