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#include <string.h>
#include <stdlib.h>
#include "uca-net-protocol.h"
static gboolean
send_default_message (GSocketConnection *connection, UcaNetMessageType type, GError **error)
{
GOutputStream *output;
UcaNetMessageDefault request;
output = g_io_stream_get_output_stream (G_IO_STREAM (connection));
request.type = type;
if (!g_output_stream_write_all (output, &request, sizeof (request), NULL, NULL, error))
return FALSE;
if (!g_output_stream_flush (output, NULL, error))
return FALSE;
return TRUE;
}
static gboolean
handle_default_reply (GSocketConnection *connection, UcaNetMessageType type, GError **error)
{
GInputStream *input;
UcaNetDefaultReply reply;
input = g_io_stream_get_input_stream (G_IO_STREAM (connection));
if (g_input_stream_read_all (input, &reply, sizeof (reply), NULL, NULL, error)) {
g_assert (reply.type == type);
if (reply.error.occurred) {
g_set_error_literal (error, g_quark_from_string (reply.error.domain), reply.error.code, reply.error.message);
return FALSE;
}
return TRUE;
}
return FALSE;
}
gboolean
uca_net_client_get_property (GSocketConnection *connection, const gchar *name, GValue *value, GError **error)
{
UcaNetMessageGetPropertyRequest request;
UcaNetMessageGetPropertyReply reply;
GInputStream *input;
GOutputStream *output;
input = g_io_stream_get_input_stream (G_IO_STREAM (connection));
output = g_io_stream_get_output_stream (G_IO_STREAM (connection));
if (g_input_stream_has_pending (input))
g_input_stream_clear_pending (input);
/* request */
request.type = UCA_NET_MESSAGE_GET_PROPERTY;
strncpy (request.property_name, name, sizeof (request.property_name));
if (!g_output_stream_write_all (output, &request, sizeof (request), NULL, NULL, error))
return FALSE;
/* reply */
if (g_input_stream_read (input, &reply, sizeof (reply), NULL, error) < 0)
return FALSE;
if (reply.type != request.type) {
if (*error != NULL)
/* FIXME: replace with correct error codes */
*error = g_error_new_literal (G_FILE_ERROR, G_FILE_ERROR_NOENT, "Reply does not match request");
return FALSE;
}
if (g_type_is_a (G_VALUE_TYPE (value), G_TYPE_ENUM)) {
g_value_set_enum (value, atoi (reply.property_value));
}
else {
/* XXX: I'd like to avoid this and rather use g_value_transform(), however
* that call fails with Python and uca-camera-control but succeeds with
* uca-grab ... */
switch (G_VALUE_TYPE (value)) {
case G_TYPE_UINT:
g_value_set_uint (value, atol (reply.property_value));
break;
case G_TYPE_DOUBLE:
g_value_set_double (value, atof (reply.property_value));
break;
case G_TYPE_BOOLEAN:
g_value_set_boolean (value, g_strcmp0 (reply.property_value, "TRUE"));
break;
case G_TYPE_STRING:
g_value_set_string (value, reply.property_value);
break;
default:
g_warning ("Unsupported property type %s", G_VALUE_TYPE_NAME (value));
}
}
return TRUE;
}
gboolean
uca_net_client_set_property (GSocketConnection *connection, const gchar *name, const GValue *value, GError **error)
{
GOutputStream *output;
const gchar *str;
GValue str_value = {0};
UcaNetMessageSetPropertyRequest request = { .type = UCA_NET_MESSAGE_SET_PROPERTY };
output = g_io_stream_get_output_stream (G_IO_STREAM (connection));
g_value_init (&str_value, G_TYPE_STRING);
if (g_type_is_a (G_VALUE_TYPE (value), G_TYPE_ENUM)) {
GValue int_value = {0};
g_value_init (&int_value, G_TYPE_INT);
g_value_transform (value, &int_value);
g_value_transform (&int_value, &str_value);
}
else {
g_value_transform (value, &str_value);
}
str = g_value_get_string (&str_value);
strncpy (request.property_name, name, sizeof (request.property_name));
strncpy (request.property_value, str, sizeof (request.property_value));
if (!g_output_stream_write_all (output, &request, sizeof (request), NULL, NULL, error))
return FALSE;
return handle_default_reply (connection, UCA_NET_MESSAGE_SET_PROPERTY, error);
}
static void
default_handshake (GSocketConnection *connection, UcaNetMessageType type, GError **error)
{
if (!send_default_message (connection, type, error))
return;
handle_default_reply (connection, type, error);
}
void
uca_net_client_start_recording (GSocketConnection *connection, GError **error)
{
default_handshake (connection, UCA_NET_MESSAGE_START_RECORDING, error);
}
void
uca_net_client_stop_recording (GSocketConnection *connection, GError **error)
{
default_handshake (connection, UCA_NET_MESSAGE_STOP_RECORDING, error);
}
void
uca_net_client_start_readout (GSocketConnection *connection, GError **error)
{
default_handshake (connection, UCA_NET_MESSAGE_START_READOUT, error);
}
void
uca_net_client_stop_readout (GSocketConnection *connection, GError **error)
{
default_handshake (connection, UCA_NET_MESSAGE_STOP_READOUT, error);
}
gboolean
uca_net_client_grab (GSocketConnection *connection, gpointer data, gsize size, GError **error)
{
GInputStream *input;
GOutputStream *output;
gsize transmitted;
gsize bytes_left;
UcaNetMessageGrabRequest request = { .type = UCA_NET_MESSAGE_GRAB, .size = size };
input = g_io_stream_get_input_stream (G_IO_STREAM (connection));
output = g_io_stream_get_output_stream (G_IO_STREAM (connection));
/* request */
if (!g_output_stream_write_all (output, &request, sizeof (request), &transmitted, NULL, error)) {
return FALSE;
}
/* error reply */
if (handle_default_reply (connection, UCA_NET_MESSAGE_GRAB, error)) {
bytes_left = size;
while (bytes_left > 0) {
gssize read;
gchar *buffer;
buffer = (gchar *) data;
read = g_input_stream_read (input, &buffer[size - bytes_left], bytes_left, NULL, error);
if (read < 0)
return FALSE;
bytes_left -= read;
}
return TRUE;
}
return FALSE;
}
gboolean
uca_net_client_close (GSocketConnection *connection, GError **error)
{
GOutputStream *output;
UcaNetMessageDefault request = { .type = UCA_NET_MESSAGE_CLOSE_CONNECTION };
output = g_io_stream_get_output_stream (G_IO_STREAM (connection));
if (!g_output_stream_write_all (output, &request, sizeof (request), NULL, NULL, error))
return FALSE;
return TRUE;
}
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