usb_cam::formats::MJPEG2RGB

Inherits from usb_cam::formats::pixel_format_base

Public Functions

	Name
	~MJPEG2RGB()
virtual void	convert(const char & src, char & dest, const int & bytes_used) override Conversion method. Meant to be overridden if pixel format requires it.
	MJPEG2RGB(const format_arguments_t & args =format_arguments_t())

Additional inherited members

Public Functions inherited from usb_cam::formats::pixel_format_base

	Name
std::string	v4l2_str() String value of V4L2 capture pixel format.
uint32_t	v4l2() Integer value of V4L2 capture pixel format.
std::string	ros() Name of output pixel (encoding) format to ROS.
bool	requires_conversion() True if the current pixel format requires a call to the convert method Used in the usb_cam library logic to determine if a plain memcopy call can be used instead of a call to the convert method of this class.
	pixel_format_base(std::string name, uint32_t v4l2, std::string ros, uint8_t channels, uint8_t bit_depth, bool requires_conversion)
std::string	name() Name of pixel format. Used in the parameters file to select this format.
bool	is_mono() Returns if the final output format is monocolor (gray) Copied from: https://github.com/ros2/common_interfaces/blob/rolling/sensor_msgs/include/sensor_msgs/image_encodings.hpp.
bool	is_color() Returns if the final output format is color Copied from: https://github.com/ros2/common_interfaces/blob/rolling/sensor_msgs/include/sensor_msgs/image_encodings.hpp.
bool	is_bayer() Returns if the final output format is bayer Copied from: https://github.com/ros2/common_interfaces/blob/rolling/sensor_msgs/include/sensor_msgs/image_encodings.hpp.
bool	has_alpha() Returns if the final output format has an alpha value Copied from: https://github.com/ros2/common_interfaces/blob/rolling/sensor_msgs/include/sensor_msgs/image_encodings.hpp.
uint8_t	channels() Number of channels (e.g. bytes) per pixel.
uint8_t	byte_depth() Number of bytes per channel.
uint8_t	bit_depth() Number for bit depth of image.

Protected Attributes inherited from usb_cam::formats::pixel_format_base

	Name
uint32_t	m_v4l2 Integer correspoding to a specific V4L2_PIX_FMT_* constant See linux/videodev2.h for a list of all possible values for here.
std::string	m_ros This should match ROS encoding string See sensor_msgs/image_encodings.hpp for corresponding possible values. Copy of those values are stored in [usb_cam/constants.hpp]
bool	m_requires_conversion boolean whether or not the current format requires a call to convert. Setting this to true requires that the virtual convert method is implemented.
std::string	m_name Unique name for this pixel format.
uint8_t	m_channels Number of channels (aka bytes per pixel) of output (ROS format above)
uint8_t	m_bit_depth Bitdepth of output (ROS format above)

Public Functions Documentation

function ~MJPEG2RGB

inline ~MJPEG2RGB()

function convert

inline virtual void convert(
    const char *& src,
    char *& dest,
    const int & bytes_used
) override

Conversion method. Meant to be overridden if pixel format requires it.

Reimplements: usb_cam::formats::pixel_format_base::convert

function MJPEG2RGB

inline explicit MJPEG2RGB(
    const format_arguments_t & args =format_arguments_t()
)

---

Updated on 2024-06-22 at 03:15:44 +0000