function varargout = GUI(varargin)
% GUI MATLAB code for GUI.fig
%      GUI, by itself, creates a new GUI or raises the existing
%      singleton*.
%
%      H = GUI returns the handle to a new GUI or the handle to
%      the existing singleton*.
%
%      GUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in GUI.M with the given input arguments.
%
%      GUI('Property','Value',...) creates a new GUI or raises
%      the existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before GUI_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to GUI_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help GUI

% Last Modified by GUIDE v2.5 11-Nov-2013 21:44:09

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @GUI_OpeningFcn, ...
                   'gui_OutputFcn',  @GUI_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT

function GUI_OpeningFcn(hObject, eventdata, handles, varargin)
handles.output = hObject;
guidata(hObject, handles);
initialize_gui(hObject, handles, false);

function varargout = GUI_OutputFcn(hObject, eventdata, handles)
varargout{1} = handles.output;

function time_Callback(hObject, eventdata, handles)
time = str2double(get(hObject, 'String'));
if isnan(time)
    set(hObject, 'String', 0);
    errordlg('Input must be a number','Error');
end
handles.metricdata.time = time;
guidata(hObject,handles)

function time_CreateFcn(hObject, eventdata, handles)
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function device_menu_Callback(hObject, eventdata, handles)

function device_menu_CreateFcn(hObject, eventdata, handles)
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function Fs_menu_Callback(hObject, eventdata, handles)

function Fs_menu_CreateFcn(hObject, eventdata, handles)
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

function start_Callback(hObject, ~, handles)
time_max = handles.metricdata.time;

list=get(handles.Fs_menu,'String');
val=get(handles.Fs_menu,'Value');
Fs = str2double(list{val});

state8 = get(handles.bit8,'Value');
state16 = get(handles.bit16,'Value');
state24 = get(handles.bit24,'Value');
if state8 == 1
    bits=8;
elseif state16 == 1
    bits=16;
elseif state24 == 1
    bits=24;
end

dev_number=get(handles.device_menu,'Value')-2;
[rec,txt]=signal_rec( Fs, time_max, bits, dev_number );

set(handles.savedata_button,'Enable','on')
set(handles.savetxt_button,'Enable','on')

handles.rec = rec;
handles.txt = txt;

guidata(hObject,handles)

function reset_Callback(hObject, eventdata, handles)
initialize_gui(gcbf, handles, true);

function savedata_button_Callback(hObject, eventdata, handles)
savedata = handles.rec;
[file,path] = uiputfile('*.dat','Save as');
Name = fullfile(path,file);
if path==0,
return;
end
save(Name,'savedata','-ascii');

function savetxt_button_Callback(hObject, eventdata, handles)
txt = handles.txt;
[file,path] = uiputfile('*.txt','Save as');
Name = fullfile(path,file);
if path==0,
return;
end
text_file = fopen(Name,'w'); 
txt = txt.';
fprintf(text_file,'%s%s\r\n%s%s\r\n%s%s\r\n',txt{:});
fclose(text_file);

function initialize_gui(fig_handle, handles, isreset)
if isfield(handles, 'metricdata') && ~isreset
    return;
end

handles.metricdata.time  = 10;
devnum=audiodevinfo(1);

set(handles.savedata_button,'Enable','off')
set(handles.savetxt_button,'Enable','off')

strArray = java_array('java.lang.String', (devnum+1) );
strArray(1) = java.lang.String('System default');
for i=0:(devnum-1),
    strArray(i+2) = java.lang.String(audiodevinfo(1,i));
end


set(handles.device_menu, 'String', cell(strArray));
set(handles.bit16, 'Value', 1);
set(handles.time,  'String', handles.metricdata.time);
set(handles.Fs_menu, 'Value', 4);
set(handles.device_menu, 'Value', 1);

guidata(handles.figure1, handles);