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usb_cam::formats::RAW_MJPEG

Inherits from usb_cam::formats::pixel_format_base

Public Functions

Name
RAW_MJPEG(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.
virtual void convert(const char & src, char & dest, const int & bytes_used)
Conversion method. Meant to be overridden if pixel format requires it.
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 RAW_MJPEG

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

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