L4T Multimedia API Reference

28.1 Release

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Data Structures
Here are the data structures with brief descriptions:
[detail level 123]
 ►NArgus
 C_NvBufferParams
 C_NvDrmBOHolds a buffer object handle
 C_NvDrmFBHolds information about the frame
 C_NvOSD_ArrowParamsHolds the arrow parameters to be overlayed
 C_NvOSD_CircleParamsHolds the circle parameters to be overlayed
 C_NvOSD_Class_info
 C_NvOSD_ColorParamsHolds the color parameters of the box or text to be overlayed
 C_NvOSD_FontParamsHolds the font parameters of the text to be overlayed
 C_NvOSD_RectParamsHolds the box parameters of the box to be overlayed
 C_NvOSD_TextParamsHolds the text parameters of the text to be overlayed
 C_v4l2_ctrl_video_qp_rangeHolds the encoder frame min/max QP parameters
 C_v4l2_enc_frame_propHolds the encoder frame property
 CMVInfo_Holds the motion vector parameters for a single macro block
 ►CNvApplicationProfiler
 ►CNvBufferClass representing a buffer
 CNvDrmRendererHelper class for rendering using LibDRM
 CNvEglRendererNvEglRenderer is a helper class for rendering using EGL and OpenGL ES 2.0
 CNvElementEvery element has a unique name that can be used for identifying the element in debug logs
 ►CNvElementProfiler
 CNvJPEGDecoderHelper class for decoding JPEG images using libjpeg APIs
 CNvJPEGEncoderNvJpegEncoder uses the libjpeg APIs for decoding JPEG images
 CNvV4l2ElementDefines a helper class for V4L2 based components
 CNvV4l2ElementPlaneDefines a helper class for operations performed on a V4L2 Element plane
 CNvVideoConverterDefines a helper class for V4L2 Video Converter
 CNvVideoDecoderDefines a helper class for V4L2 Video Decoder
 CNvVideoEncoderDefines a helper class for V4L2 Video Encoder
 CTRT_Context
 Cv4l2_ctrl_h264dec_bufmetadata_Holds H.264 specific decoder metadata for the frame
 Cv4l2_ctrl_hevcdec_bufmetadata_Holds H.265 specific decoder metadata for the frame
 Cv4l2_ctrl_video_metadata_Holds the metadata parameters for video encoder and decoder
 Cv4l2_ctrl_videodec_currentframe_metadata_Holds the the frame specific metadata for the current frame
 Cv4l2_ctrl_videodec_dpbinfometadata_Holds the decoder DPB info metadata
 Cv4l2_ctrl_videodec_outputbuf_metadata_Holds the video decoder output metadata for a frame
 Cv4l2_ctrl_videodec_refframe_metadata_Holds the the frame specific metadata for a reference frame
 Cv4l2_ctrl_videodec_statusmetadata_Holds the decoder error status metadata for the frame
 Cv4l2_ctrl_videoenc_input_metadata_Holds the encoder frame input metadata parameters
 Cv4l2_ctrl_videoenc_outputbuf_metadata_Holds the encoder output metadata for a frame, to be used with V4L2_CID_MPEG_VIDEOENC_METADATA IOCTL
 Cv4l2_ctrl_videoenc_outputbuf_metadata_MV_Holds the motion vector parameters for one complete frame
 Cv4l2_enc_enable_ext_rate_ctrl_Holds the params to configure encoder for external rate control mode to be used with V4L2_CID_MPEG_VIDEOENC_ENABLE_EXTERNAL_RATE_CONTROL IOCTL
 Cv4l2_enc_enable_ext_rps_ctrl_Holds the params to configure encoder for external rps control to be used with V4L2_CID_MPEG_VIDEOENC_ENABLE_EXTERNAL_RPS_CONTROL IOCTL
 Cv4l2_enc_enable_reconcrc_param_Holds the params to configure encoder for Reconstructed CRC encoding
 Cv4l2_enc_enable_roi_param_Holds the params to configure encoder for ROI parameters encoding
 Cv4l2_enc_frame_ext_rate_ctrl_params_Holds the encoder frame external rate control parameters to be used with V4L2_CID_MPEG_VIDEOENC_INPUT_METADATA ioctl
 Cv4l2_enc_frame_ext_rps_ctrl_params_Holds the encoder frame external rps control parameters to be used with V4L2_CID_MPEG_VIDEOENC_INPUT_METADATA IOCTL
 Cv4l2_enc_frame_full_prop_Holds the RPS List parameters of encoded frame
 Cv4l2_enc_frame_ReconCRC_params_Holds the encoder frame Reconstructed CRC parameters
 Cv4l2_enc_frame_ROI_params_Holds the encoder frame ROI parameters to be used with V4L2_CID_MPEG_VIDEOENC_ROI_PARAMS IOCTL
 Cv4l2_enc_gdr_params_Holds the encoder GDR parameters to be used with V4L2_CID_MPEG_VIDEOENC_INPUT_METADATA IOCTL
 Cv4l2_enc_hw_preset_type_param_Holds encoder HW Preset type parameters to be used with V4L2_CID_MPEG_VIDEOENC_HW_PRESET_TYPE_PARAM IOCTL
 Cv4l2_enc_num_ref_frames_Holds encoder number of reference frame parameters, to be used with V4L2_CID_MPEG_VIDEOENC_NUM_REFERENCE_FRAMES IOCTL
 Cv4l2_enc_ROI_param_Holds the encoder quality parameters for a single ROI region
 Cv4l2_enc_slice_intrarefresh_param_Holds encoder slice intrareferesh parameters, to be used with V4L2_CID_MPEG_VIDEOENC_SLICE_INTRAREFRESH_PARAM IOCTL
 Cv4l2_enc_slice_length_param_Holds encoder slice length parameters, to be used with V4L2_CID_MPEG_VIDEOENC_SLICE_LENGTH_PARAM IOCTL
 Cv4l2_enc_virtual_buffer_size_Holds encoder virtual buffer size parameters, to be used with V4L2_CID_MPEG_VIDEOENC_VIRTUALBUFFER_SIZE IOCTL