static gboolean
_read_memory (ArvGvDeviceIOData *io_data, guint32 address, guint32 size, void *buffer, GError **error)
{
ArvGvcpPacket *packet;
size_t packet_size;
size_t answer_size;
int count;
unsigned int n_retries = 0;
gboolean success = FALSE;
answer_size = arv_gvcp_packet_get_read_memory_ack_size (size);
g_return_val_if_fail (answer_size <= ARV_GV_DEVICE_BUFFER_SIZE, FALSE);
g_mutex_lock (io_data->mutex);
packet = arv_gvcp_packet_new_read_memory_cmd (address,
((size + sizeof (guint32) - 1)
/ sizeof (guint32)) * sizeof (guint32),
0, &packet_size);
do {
io_data->packet_id = arv_gvcp_next_packet_id (io_data->packet_id);
arv_gvcp_packet_set_packet_id (packet, io_data->packet_id);
arv_gvcp_packet_debug (packet, ARV_DEBUG_LEVEL_LOG);
g_socket_send_to (io_data->socket, io_data->device_address,
(const char *) packet, packet_size,
NULL, NULL);
if (g_poll (&io_data->poll_in_event, 1, io_data->gvcp_timeout_ms) > 0) {
count = g_socket_receive (io_data->socket, io_data->buffer,
ARV_GV_DEVICE_BUFFER_SIZE, NULL, NULL);
if (count >= answer_size) {
ArvGvcpPacket *ack_packet = io_data->buffer;
ArvGvcpPacketType packet_type;
ArvGvcpCommand command;
guint16 packet_id;
arv_gvcp_packet_debug (ack_packet, ARV_DEBUG_LEVEL_LOG);
packet_type = arv_gvcp_packet_get_packet_type (ack_packet);
command = arv_gvcp_packet_get_command (ack_packet);
packet_id = arv_gvcp_packet_get_packet_id (ack_packet);
if (packet_type == ARV_GVCP_PACKET_TYPE_ACK &&
command == ARV_GVCP_COMMAND_READ_MEMORY_ACK &&
packet_id == io_data->packet_id) {
memcpy (buffer, arv_gvcp_packet_get_read_memory_ack_data (ack_packet), size);
success = TRUE;
} else
arv_gvcp_packet_debug (ack_packet, ARV_DEBUG_LEVEL_WARNING);
}
}
n_retries++;
} while (!success && n_retries < io_data->gvcp_n_retries);
arv_gvcp_packet_free (packet);
g_mutex_unlock (io_data->mutex);
if (!success) {
if (error != NULL && *error == NULL)
*error = g_error_new (ARV_DEVICE_ERROR, ARV_DEVICE_STATUS_TIMEOUT,
"[ArvDevice::read_memory] Timeout");
}
return success;
}
gboolean
handle_control_packet (ArvGvFakeCamera *gv_fake_camera, GSocket *socket,
GSocketAddress *remote_address,
ArvGvcpPacket *packet, size_t size)
{
ArvGvcpPacket *ack_packet = NULL;
size_t ack_packet_size;
guint32 block_address;
guint32 block_size;
guint16 packet_id;
guint16 packet_type;
guint32 register_address;
guint32 register_value;
gboolean write_access;
gboolean success = FALSE;
if (gv_fake_camera->priv->controller_address != NULL) {
gint64 time;
guint64 elapsed_ms;
time = g_get_real_time ();
elapsed_ms = (time - gv_fake_camera->priv->controller_time) / 1000;
if (elapsed_ms > arv_fake_camera_get_heartbeat_timeout (gv_fake_camera->priv->camera)) {
g_object_unref (gv_fake_camera->priv->controller_address);
gv_fake_camera->priv->controller_address = NULL;
write_access = TRUE;
arv_warning_device ("[GvFakeCamera::handle_control_packet] Heartbeat timeout");
arv_fake_camera_set_control_channel_privilege (gv_fake_camera->priv->camera, 0);
} else
write_access = _g_inet_socket_address_is_equal
(G_INET_SOCKET_ADDRESS (remote_address),
G_INET_SOCKET_ADDRESS (gv_fake_camera->priv->controller_address));
} else
write_access = TRUE;
arv_gvcp_packet_debug (packet, ARV_DEBUG_LEVEL_LOG);
packet_id = arv_gvcp_packet_get_packet_id (packet);
packet_type = arv_gvcp_packet_get_packet_type (packet);
if (packet_type != ARV_GVCP_PACKET_TYPE_CMD) {
arv_warning_device ("[GvFakeCamera::handle_control_packet] Unknown packet type");
return FALSE;
}
switch (g_ntohs (packet->header.command)) {
case ARV_GVCP_COMMAND_DISCOVERY_CMD:
ack_packet = arv_gvcp_packet_new_discovery_ack (&ack_packet_size);
arv_debug_device ("[GvFakeCamera::handle_control_packet] Discovery command");
arv_fake_camera_read_memory (gv_fake_camera->priv->camera, 0, ARV_GVBS_DISCOVERY_DATA_SIZE,
&ack_packet->data);
break;
case ARV_GVCP_COMMAND_READ_MEMORY_CMD:
arv_gvcp_packet_get_read_memory_cmd_infos (packet, &block_address, &block_size);
arv_debug_device ("[GvFakeCamera::handle_control_packet] Read memory command %d (%d)",
block_address, block_size);
ack_packet = arv_gvcp_packet_new_read_memory_ack (block_address, block_size,
packet_id, &ack_packet_size);
arv_fake_camera_read_memory (gv_fake_camera->priv->camera, block_address, block_size,
arv_gvcp_packet_get_read_memory_ack_data (ack_packet));
break;
case ARV_GVCP_COMMAND_WRITE_MEMORY_CMD:
arv_gvcp_packet_get_write_memory_cmd_infos (packet, &block_address, &block_size);
if (!write_access) {
arv_warning_device("[GvFakeCamera::handle_control_packet] Ignore Write memory command %d (%d) not controller",
block_address, block_size);
break;
}
arv_debug_device ("[GvFakeCamera::handle_control_packet] Write memory command %d (%d)",
block_address, block_size);
arv_fake_camera_write_memory (gv_fake_camera->priv->camera, block_address, block_size,
arv_gvcp_packet_get_write_memory_cmd_data (packet));
ack_packet = arv_gvcp_packet_new_write_memory_ack (block_address, packet_id,
&ack_packet_size);
break;
case ARV_GVCP_COMMAND_READ_REGISTER_CMD:
arv_gvcp_packet_get_read_register_cmd_infos (packet, ®ister_address);
arv_fake_camera_read_register (gv_fake_camera->priv->camera, register_address, ®ister_value);
arv_debug_device ("[GvFakeCamera::handle_control_packet] Read register command %d -> %d",
register_address, register_value);
ack_packet = arv_gvcp_packet_new_read_register_ack (register_value, packet_id,
&ack_packet_size);
if (register_address == ARV_GVBS_CONTROL_CHANNEL_PRIVILEGE_OFFSET)
gv_fake_camera->priv->controller_time = g_get_real_time ();
break;
case ARV_GVCP_COMMAND_WRITE_REGISTER_CMD:
arv_gvcp_packet_get_write_register_cmd_infos (packet, ®ister_address, ®ister_value);
if (!write_access) {
arv_warning_device("[GvFakeCamera::handle_control_packet] Ignore Write register command %d (%d) not controller",
register_address, register_value);
break;
}
arv_fake_camera_write_register (gv_fake_camera->priv->camera, register_address, register_value);
arv_debug_device ("[GvFakeCamera::handle_control_packet] Write register command %d -> %d",
register_address, register_value);
ack_packet = arv_gvcp_packet_new_write_register_ack (1, packet_id,
&ack_packet_size);
break;
default:
arv_warning_device ("[GvFakeCamera::handle_control_packet] Unknown command");
}
if (ack_packet != NULL) {
g_socket_send_to (socket, remote_address, (char *) ack_packet, ack_packet_size, NULL, NULL);
arv_gvcp_packet_debug (ack_packet, ARV_DEBUG_LEVEL_LOG);
g_free (ack_packet);
success = TRUE;
}
if (gv_fake_camera->priv->controller_address == NULL &&
arv_fake_camera_get_control_channel_privilege (gv_fake_camera->priv->camera) != 0) {
g_object_ref (remote_address);
arv_debug_device("[GvFakeCamera::handle_control_packet] New controller");
gv_fake_camera->priv->controller_address = remote_address;
gv_fake_camera->priv->controller_time = g_get_real_time ();
}
else if (gv_fake_camera->priv->controller_address != NULL &&
arv_fake_camera_get_control_channel_privilege (gv_fake_camera->priv->camera) == 0) {
g_object_unref (gv_fake_camera->priv->controller_address);
arv_debug_device("[GvFakeCamera::handle_control_packet] Controller releases");
gv_fake_camera->priv->controller_address = NULL;
gv_fake_camera->priv->controller_time = g_get_real_time ();
}
return success;
}
gboolean
_write_register (ArvGvDeviceIOData *io_data, guint32 address, guint32 value, GError **error)
{
ArvGvcpPacket *packet;
size_t packet_size;
int count;
unsigned int n_retries = 0;
gboolean success = FALSE;
g_mutex_lock (io_data->mutex);
packet = arv_gvcp_packet_new_write_register_cmd (address, value, io_data->packet_id, &packet_size);
do {
io_data->packet_id = arv_gvcp_next_packet_id (io_data->packet_id);
arv_gvcp_packet_set_packet_id (packet, io_data->packet_id);
arv_gvcp_packet_debug (packet, ARV_DEBUG_LEVEL_LOG);
g_socket_send_to (io_data->socket, io_data->device_address, (const char *) packet, packet_size,
NULL, NULL);
if (g_poll (&io_data->poll_in_event, 1, io_data->gvcp_timeout_ms) > 0) {
count = g_socket_receive (io_data->socket, io_data->buffer,
ARV_GV_DEVICE_BUFFER_SIZE, NULL, NULL);
if (count > 0) {
ArvGvcpPacket *ack_packet = io_data->buffer;
ArvGvcpPacketType packet_type;
ArvGvcpCommand command;
guint16 packet_id;
arv_gvcp_packet_debug (ack_packet, ARV_DEBUG_LEVEL_LOG);
packet_type = arv_gvcp_packet_get_packet_type (ack_packet);
command = arv_gvcp_packet_get_command (ack_packet);
packet_id = arv_gvcp_packet_get_packet_id (ack_packet);
arv_log_gvcp ("%d, %d, %d", packet_type, command, packet_id);
if (packet_type == ARV_GVCP_PACKET_TYPE_ACK &&
command == ARV_GVCP_COMMAND_WRITE_REGISTER_ACK &&
packet_id == io_data->packet_id)
success = TRUE;
else
arv_gvcp_packet_debug (ack_packet, ARV_DEBUG_LEVEL_WARNING);
}
}
n_retries++;
} while (!success && n_retries < io_data->gvcp_n_retries);
arv_gvcp_packet_free (packet);
g_mutex_unlock (io_data->mutex);
if (!success) {
if (error != NULL && *error == NULL)
*error = g_error_new (ARV_DEVICE_ERROR, ARV_DEVICE_STATUS_TIMEOUT,
"[ArvDevice::write_register] Timeout");
}
return success;
}
