mirror of
https://github.com/wpilibsuite/allwpilib
synced 2026-06-25 01:41:43 +00:00
417545d521
The main thing not yet fully implemented is video mode setting. Also fix a handful of bugs in HTTPSinkImpl.
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/*----------------------------------------------------------------------------*/
|
|
/* Copyright (c) FIRST 2016. All Rights Reserved. */
|
|
/* Open Source Software - may be modified and shared by FRC teams. The code */
|
|
/* must be accompanied by the FIRST BSD license file in the root directory of */
|
|
/* the project. */
|
|
/*----------------------------------------------------------------------------*/
|
|
|
|
#ifndef CAMERASERVER_USBCAMERABUFFER_H_
|
|
#define CAMERASERVER_USBCAMERABUFFER_H_
|
|
|
|
#ifdef __linux__
|
|
#include <sys/mman.h>
|
|
#endif
|
|
|
|
namespace cs {
|
|
|
|
class USBCameraBuffer {
|
|
public:
|
|
USBCameraBuffer() noexcept : m_data{nullptr}, m_length{0} {}
|
|
USBCameraBuffer(USBCameraBuffer&& other) noexcept : USBCameraBuffer() {
|
|
swap(*this, other);
|
|
}
|
|
USBCameraBuffer& operator=(USBCameraBuffer&& other) noexcept {
|
|
swap(*this, other);
|
|
return *this;
|
|
}
|
|
USBCameraBuffer(const USBCameraBuffer&) = delete;
|
|
USBCameraBuffer& operator=(const USBCameraBuffer&) = delete;
|
|
|
|
#ifdef __linux__
|
|
USBCameraBuffer(int fd, size_t length, off_t offset) noexcept
|
|
: m_length{length} {
|
|
m_data =
|
|
mmap(nullptr, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, offset);
|
|
if (m_data == MAP_FAILED) {
|
|
m_data = nullptr;
|
|
m_length = 0;
|
|
}
|
|
}
|
|
|
|
~USBCameraBuffer() {
|
|
if (m_data) munmap(m_data, m_length);
|
|
}
|
|
#endif
|
|
|
|
friend void swap(USBCameraBuffer& first, USBCameraBuffer& second) noexcept {
|
|
using std::swap;
|
|
swap(first.m_data, second.m_data);
|
|
swap(first.m_length, second.m_length);
|
|
}
|
|
|
|
void* m_data;
|
|
size_t m_length;
|
|
};
|
|
|
|
} // namespace cs
|
|
|
|
#endif // CAMERASERVER_USBCAMERABUFFER_H_
|