static void
_send_packet_request (ArvGvStreamThreadData *thread_data,
guint32 frame_id,
guint32 first_block,
guint32 last_block)
{
ArvGvcpPacket *packet;
size_t packet_size;
thread_data->packet_id = arv_gvcp_next_packet_id (thread_data->packet_id);
packet = arv_gvcp_packet_new_packet_resend_cmd (frame_id, first_block, last_block,
thread_data->packet_id, &packet_size);
arv_log_stream_thread ("[GvStream::send_packet_request] frame_id = %u (%d - %d)",
frame_id, first_block, last_block);
arv_gvcp_packet_debug (packet, ARV_DEBUG_LEVEL_LOG);
g_socket_send_to (thread_data->socket, thread_data->device_address, (const char *) packet, packet_size,
NULL, NULL);
arv_gvcp_packet_free (packet);
}
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
_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;
}
