mmal_worker_buffer_from_host Struct Reference

#include <mmal_vc_msgs.h>

Public Attributes
mmal_worker_msg_header	header
struct MMAL_DRIVER_BUFFER_T	drvbuf
struct MMAL_DRIVER_BUFFER_T	drvbuf_ref
MMAL_BUFFER_HEADER_T	buffer_header
MMAL_BUFFER_HEADER_TYPE_SPECIFIC_T	buffer_header_type_specific
MMAL_BOOL_T	is_zero_copy
MMAL_BOOL_T	has_reference
uint32_t	payload_in_message
uint8_t	short_data [MMAL_VC_SHORT_DATA]

Detailed Description

Receive a buffer from the host.

See also

mmal_port_send_buffer()

Member Data Documentation

MMAL_BUFFER_HEADER_T mmal_worker_buffer_from_host::buffer_header

the buffer header itself

struct MMAL_DRIVER_BUFFER_T mmal_worker_buffer_from_host::drvbuf

Our control data, copied from the buffer header "driver area"

See also

mmal_buffer_header_driver_data().

struct MMAL_DRIVER_BUFFER_T mmal_worker_buffer_from_host::drvbuf_ref

Referenced buffer control data. This is set if the buffer is referencing another buffer as is the case with passthrough ports where buffers on the output port reference buffers on the input port.

uint32_t mmal_worker_buffer_from_host::payload_in_message

If the data is short enough, then send it in the control message rather than using a separate VCHIQ bulk transfer.

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The documentation for this struct was generated from the following file:

• /Volumes/WORK_IN_PROGRESS/RASPBERRY_PI/github/firmware-master/opt/vc/include/interface/mmal/vc/mmal_vc_msgs.h