ArvGvcp: Aravis Reference Manual

ArvGvcp

ArvGvcp — GigEVision control packet handling

Functions

void	arv_gvcp_packet_free ()
ArvGvcpPacketType	arv_gvcp_packet_get_packet_type ()
ArvGvcpCommand	arv_gvcp_packet_get_command ()
guint16	arv_gvcp_packet_get_packet_id ()
void *	arv_gvcp_packet_get_read_memory_ack_data ()
size_t	arv_gvcp_packet_get_read_memory_ack_size ()
void	arv_gvcp_packet_get_read_memory_cmd_infos ()
guint32	arv_gvcp_packet_get_read_register_ack_value ()
void	arv_gvcp_packet_get_read_register_cmd_infos ()
size_t	arv_gvcp_packet_get_write_memory_ack_size ()
void *	arv_gvcp_packet_get_write_memory_cmd_data ()
void	arv_gvcp_packet_get_write_memory_cmd_infos ()
void	arv_gvcp_packet_get_write_register_cmd_infos ()
void	arv_gvcp_packet_set_packet_id ()
ArvGvcpPacket *	arv_gvcp_packet_new_read_memory_cmd ()
ArvGvcpPacket *	arv_gvcp_packet_new_read_memory_ack ()
ArvGvcpPacket *	arv_gvcp_packet_new_write_memory_cmd ()
ArvGvcpPacket *	arv_gvcp_packet_new_write_memory_ack ()
ArvGvcpPacket *	arv_gvcp_packet_new_read_register_cmd ()
ArvGvcpPacket *	arv_gvcp_packet_new_read_register_ack ()
ArvGvcpPacket *	arv_gvcp_packet_new_write_register_cmd ()
ArvGvcpPacket *	arv_gvcp_packet_new_write_register_ack ()
ArvGvcpPacket *	arv_gvcp_packet_new_discovery_cmd ()
ArvGvcpPacket *	arv_gvcp_packet_new_discovery_ack ()
ArvGvcpPacket *	arv_gvcp_packet_new_packet_resend_cmd ()
char *	arv_gvcp_packet_to_string ()
void	arv_gvcp_packet_debug ()
guint16	arv_gvcp_next_packet_id ()

Types and Values

#define	ARV_GVCP_PORT
enum	ArvGvcpPacketType
enum	ArvGvcpCommand
	ArvGvcpHeader
	ArvGvcpPacket

Description

Functions

arv_gvcp_packet_free ()

void
arv_gvcp_packet_free (ArvGvcpPacket *packet);

arv_gvcp_packet_get_packet_type ()

ArvGvcpPacketType
arv_gvcp_packet_get_packet_type (ArvGvcpPacket *packet);

Parameters

packet

a ArvGvcpPacket

Returns

The ArvGvcpPacketType code of packet .

arv_gvcp_packet_get_command ()

ArvGvcpCommand
arv_gvcp_packet_get_command (ArvGvcpPacket *packet);

Parameters

packet

a ArvGvcpPacket

Returns

The ArvGvcpCommand code of packet .

arv_gvcp_packet_get_packet_id ()

guint16
arv_gvcp_packet_get_packet_id (ArvGvcpPacket *packet);

arv_gvcp_packet_get_read_memory_ack_data ()

void *
arv_gvcp_packet_get_read_memory_ack_data
                               (const ArvGvcpPacket *packet);

arv_gvcp_packet_get_read_memory_ack_size ()

size_t
arv_gvcp_packet_get_read_memory_ack_size
                               (guint32 data_size);

arv_gvcp_packet_get_read_memory_cmd_infos ()

void
arv_gvcp_packet_get_read_memory_cmd_infos
                               (const ArvGvcpPacket *packet,
                                guint32 *address,
                                guint32 *size);

arv_gvcp_packet_get_read_register_ack_value ()

guint32
arv_gvcp_packet_get_read_register_ack_value
                               (const ArvGvcpPacket *packet);

arv_gvcp_packet_get_read_register_cmd_infos ()

void
arv_gvcp_packet_get_read_register_cmd_infos
                               (const ArvGvcpPacket *packet,
                                guint32 *address);

arv_gvcp_packet_get_write_memory_ack_size ()

size_t
arv_gvcp_packet_get_write_memory_ack_size
                               (void);

arv_gvcp_packet_get_write_memory_cmd_data ()

void *
arv_gvcp_packet_get_write_memory_cmd_data
                               (const ArvGvcpPacket *packet);

arv_gvcp_packet_get_write_memory_cmd_infos ()

void
arv_gvcp_packet_get_write_memory_cmd_infos
                               (const ArvGvcpPacket *packet,
                                guint32 *address,
                                guint32 *size);

arv_gvcp_packet_get_write_register_cmd_infos ()

void
arv_gvcp_packet_get_write_register_cmd_infos
                               (const ArvGvcpPacket *packet,
                                guint32 *address,
                                guint32 *value);

arv_gvcp_packet_set_packet_id ()

void
arv_gvcp_packet_set_packet_id (ArvGvcpPacket *packet,
                               guint16 id);

arv_gvcp_packet_new_read_memory_cmd ()

ArvGvcpPacket *
arv_gvcp_packet_new_read_memory_cmd (guint32 address,
                                     guint32 size,
                                     guint16 packet_id,
                                     size_t *packet_size);

[skip]

Parameters

address	read address
size	read size, in bytes
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a memory read command.

[transfer full]

arv_gvcp_packet_new_read_memory_ack ()

ArvGvcpPacket *
arv_gvcp_packet_new_read_memory_ack (guint32 address,
                                     guint32 size,
                                     guint16 packet_id,
                                     size_t *packet_size);

[skip]

Parameters

address	read address
size	read size, in bytes
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a memory read acknowledge.

[transfer full]

arv_gvcp_packet_new_write_memory_cmd ()

ArvGvcpPacket *
arv_gvcp_packet_new_write_memory_cmd (guint32 address,
                                      guint32 size,
                                      guint16 packet_id,
                                      size_t *packet_size);

[skip]

Parameters

address	write address
size	write size, in bytes
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a memory write command.

[transfer full]

arv_gvcp_packet_new_write_memory_ack ()

ArvGvcpPacket *
arv_gvcp_packet_new_write_memory_ack (guint32 address,
                                      guint16 packet_id,
                                      size_t *packet_size);

[skip]

Parameters

address	write address
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a memory write acknowledge.

[transfer full]

arv_gvcp_packet_new_read_register_cmd ()

ArvGvcpPacket *
arv_gvcp_packet_new_read_register_cmd (guint32 address,
                                       guint16 packet_id,
                                       size_t *packet_size);

[skip]

Parameters

address	write address
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a register read command.

[transfer full]

arv_gvcp_packet_new_read_register_ack ()

ArvGvcpPacket *
arv_gvcp_packet_new_read_register_ack (guint32 value,
                                       guint16 packet_id,
                                       size_t *packet_size);

[skip]

Parameters

value	read value
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a register read acknowledge.

[transfer full]

arv_gvcp_packet_new_write_register_cmd ()

ArvGvcpPacket *
arv_gvcp_packet_new_write_register_cmd
                               (guint32 address,
                                guint32 value,
                                guint16 packet_id,
                                size_t *packet_size);

[skip]

Parameters

address	write address
value	value to write
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a register write command.

[transfer full]

arv_gvcp_packet_new_write_register_ack ()

ArvGvcpPacket *
arv_gvcp_packet_new_write_register_ack
                               (guint32 address,
                                guint16 packet_id,
                                size_t *packet_size);

[skip]

Parameters

address	write address
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a register write acknowledge.

[transfer full]

arv_gvcp_packet_new_discovery_cmd ()

ArvGvcpPacket *
arv_gvcp_packet_new_discovery_cmd (size_t *size);

[skip]

Parameters

size

packet size, in bytes.

[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a discovery command.

[transfer full]

arv_gvcp_packet_new_discovery_ack ()

ArvGvcpPacket *
arv_gvcp_packet_new_discovery_ack (size_t *packet_size);

[skip]

Parameters

packet_size

packet size, in bytes.

[out]

Returns

a new ArvGvcpPacket

Create a gvcp packet for a discovery acknowledge.

[transfer full]

arv_gvcp_packet_new_packet_resend_cmd ()

ArvGvcpPacket *
arv_gvcp_packet_new_packet_resend_cmd (guint32 frame_id,
                                       guint32 first_block,
                                       guint32 last_block,
                                       guint16 packet_id,
                                       size_t *packet_size);

Create a gvcp packet for a packet resend command.

[skip]

Parameters

frame_id	frame id
first_block	first missing packet
last_block	last missing packet
packet_id	packet id
packet_size	packet size, in bytes.	[out]

Returns

a new ArvGvcpPacket.

[transfer full]

arv_gvcp_packet_to_string ()

char *
arv_gvcp_packet_to_string (const ArvGvcpPacket *packet);

Converts packet into a human readable string.

Parameters

packet

a ArvGvcpPacket

Returns

A newly allocated string.

[transfer full]

arv_gvcp_packet_debug ()

void
arv_gvcp_packet_debug (const ArvGvcpPacket *packet,
                       ArvDebugLevel level);

Dumps the content of packet if level is lower or equal to the current debug level for the cp debug category. See arv_debug_enable().

Parameters

packet	a ArvGvcpPacket
level	debug level

arv_gvcp_next_packet_id ()

guint16
arv_gvcp_next_packet_id (guint16 packet_id);

Types and Values

ARV_GVCP_PORT

#define ARV_GVCP_PORT 3956

Standard device listening port for GVCP packets

enum ArvGvcpPacketType

Members

ARV_GVCP_PACKET_TYPE_ACK	acknowledge packet
ARV_GVCP_PACKET_TYPE_RESEND	resend request packet
ARV_GVCP_PACKET_TYPE_CMD	command packet
ARV_GVCP_PACKET_TYPE_ERROR	error packet

enum ArvGvcpCommand

Members

ARV_GVCP_COMMAND_DISCOVERY_CMD	discovery command
ARV_GVCP_COMMAND_DISCOVERY_ACK	discovery acknowledge
ARV_GVCP_COMMAND_BYE_CMD	goodbye command, for connection termination
ARV_GVCP_COMMAND_BYE_ACK	goodbye acknowledge
ARV_GVCP_COMMAND_PACKET_RESEND_CMD	packet resend request
ARV_GVCP_COMMAND_PACKET_RESEND_ACK	packet resend acknowledge (not used ?)
ARV_GVCP_COMMAND_READ_REGISTER_CMD	read register command
ARV_GVCP_COMMAND_READ_REGISTER_ACK	read register acknowledge
ARV_GVCP_COMMAND_WRITE_REGISTER_CMD	write register command
ARV_GVCP_COMMAND_WRITE_REGISTER_ACK	write register acknowledge
ARV_GVCP_COMMAND_READ_MEMORY_CMD	read memory command
ARV_GVCP_COMMAND_READ_MEMORY_ACK	read memory acknowledge
ARV_GVCP_COMMAND_WRITE_MEMORY_CMD	write memory command
ARV_GVCP_COMMAND_WRITE_MEMORY_ACK	write memory acknowledge
ARV_GVCP_COMMAND_PENDING_ACK	pending command acknowledge

ArvGvcpHeader

typedef struct {
	guint16 packet_type;
	guint16 command;
	guint16 size;
	guint16 id;
} ArvGvcpHeader;

GVCP packet header structure.

Members

guint16 `packet_type`;	a ArvGvcpPacketType identifier
guint16 `command`;	a ArvGvcpCommand identifier
guint16 `size`;	data size
guint16 `id`;	packet identifier

ArvGvcpPacket

typedef struct {
	ArvGvcpHeader header;
	unsigned char data[];
} ArvGvcpPacket;

GVCP packet structure.

Members

ArvGvcpHeader `header`;	packet header
unsigned char `data`[];	variable size byte array