// returns return data (if any) unless get_error is true
private object GetScriptMessage(int script_id, bool return_string_as_byte_array, bool get_error = false)
{
CHDK_ScriptMsgType type;
int subtype, script_id2;
byte[] data;
while (true)
{
_session.CHDK_ReadScriptMsg(out type, out subtype, out script_id2, out data);
if (type == CHDK_ScriptMsgType.PTP_CHDK_S_MSGTYPE_NONE) // no more messages; no return value
{
return(null);
}
if (script_id2 != script_id) // ignore message from other scripts
{
continue;
}
if (!get_error && type == CHDK_ScriptMsgType.PTP_CHDK_S_MSGTYPE_RET) // return info!
{
switch ((CHDK_ScriptDataType)subtype)
{
case CHDK_ScriptDataType.PTP_CHDK_TYPE_BOOLEAN:
return((data[0] | data[1] | data[2] | data[3]) != 0);
case CHDK_ScriptDataType.PTP_CHDK_TYPE_INTEGER:
return(data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24));
case CHDK_ScriptDataType.PTP_CHDK_TYPE_STRING:
if (return_string_as_byte_array)
{
return(data);
}
else
{
return((new ASCIIEncoding()).GetString(data));
}
default:
throw new Exception("script returned unsupported data type: " + type.ToString());
}
}
if (type == CHDK_ScriptMsgType.PTP_CHDK_S_MSGTYPE_ERR) // hmm.. error
{
if (get_error)
{
return((new ASCIIEncoding()).GetString(data));
}
else
{
throw new Exception("error running script: " + (new ASCIIEncoding()).GetString(data));
}
}
// ignore other (user) messages
}
}
// returns return data (if any) unless get_error is true
private object GetScriptMessage(int script_id, bool return_string_as_byte_array, bool get_error = false)
{
CHDK_ScriptMsgType type;
int subtype, script_id2;
byte[] data;
while (true)
{
_session.CHDK_ReadScriptMsg(out type, out subtype, out script_id2, out data);
if (type == CHDK_ScriptMsgType.PTP_CHDK_S_MSGTYPE_NONE) // no more messages; no return value
{
return(null);
}
if (script_id2 != script_id) // ignore message from other scripts
{
continue;
}
if (!get_error && type == CHDK_ScriptMsgType.PTP_CHDK_S_MSGTYPE_RET) // return info!
{
CHDK_ScriptDataType chdkSubtype = (CHDK_ScriptDataType)subtype;
switch (chdkSubtype)
{
case CHDK_ScriptDataType.PTP_CHDK_TYPE_NIL:
return(null);
case CHDK_ScriptDataType.PTP_CHDK_TYPE_BOOLEAN:
return((data[0] | data[1] | data[2] | data[3]) != 0);
case CHDK_ScriptDataType.PTP_CHDK_TYPE_INTEGER:
return(data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24));
case CHDK_ScriptDataType.PTP_CHDK_TYPE_STRING:
if (return_string_as_byte_array)
{
return(data);
}
else
{
return((new ASCIIEncoding()).GetString(data));
}
case CHDK_ScriptDataType.PTP_CHDK_TYPE_TABLE:
string str = Encoding.ASCII.GetString(data);
string[] split = str.Split('\n');
Dictionary <string, string> table = new Dictionary <string, string>();
foreach (var substr in split)
{
string[] kvp = substr.Split('\t');
if (kvp.Length != 2)
{
break;
}
table.Add(kvp[0], kvp[1]);
}
return(table);
default:
throw new Exception("script returned unsupported data type: " + chdkSubtype.ToString());
}
}
if (type == CHDK_ScriptMsgType.PTP_CHDK_S_MSGTYPE_ERR) // hmm.. error
{
if (get_error)
{
return((new ASCIIEncoding()).GetString(data));
}
else
{
throw new Exception("error running script: " + (new ASCIIEncoding()).GetString(data));
}
}
// ignore other (user) messages
}
}