DWT Audio Digital Watermarking based on MATLAB GUI

function varargout = main(varargin)
% MAIN MATLAB code for main.fig
%      MAIN, by itself, creates a new MAIN or raises the existing
%      singleton*.
%
%      H = MAIN returns the handle to a new MAIN or the handle to
%      the existing singleton*.
%
%      MAIN('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in MAIN.M with the given input arguments.
%
%      MAIN('Property'.'Value',...). creates anew MAIN or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before main_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to main_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 main

% Last Modified by GUIDE v2. 5 05-Apr- 2021. 22:33:40

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @main_OpeningFcn, ...
                   'gui_OutputFcn',  @main_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


% --- Executes just before main is made visible.
function main_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to main (see VARARGIN)

% Choose default command line output for main
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes main wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = main_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;


% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)%% Select audio [file1, pathName]=uigetfile('*.wav'.'Please select the sample to be identified'); % fname=fullfile(pathname,file1); [X,fs,bits]=wavread(fname); % Read audio file sound(X,fs); % Play sound handles.axes1 
subplot(2.2.1); plot(X); % Display audio file waveform title('Raw audio signal'); 
handles.X=X;
handles.fs=fs;
guidata(hObject, handles);
% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)%% Select watermark [file1, pathName]=uigetfile('*.bmp'.'Please select the sample to be identified'); % fname=fullfile(pathname,file1); key=35; % Number of Arnold replacements as the key Orignalmark=double(imread(fname)); % read64*64[wrow,wcol]=size(Orignalmark);if wrow~=wcol 
    error('wrow~=wcol error'); End % - test key key is beyond the scope of -- -- -- -- -- -- -- -- -- n = check_arnold (wrow);if (key+1) >n
    error('arnold key error');
end


subplot(2.2.2); hold on
imshow(Orignalmark).title('Original image');
handles.Orignalmark=Orignalmark;
handles.n=n;
guidata(hObject, handles);
% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)% % % watermark was embedded into watermark embedding -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- X=handles.X; Orignalmark=handles.Orignalmark; Fs =handles. Fs; % frequency [wrow wcol] = size (Orignalmark); key=35; Arnoldw=arnold(Orignalmark,wrow,key); % Arnold conversion of watermark image [C, L]=wavedec(X, wavedec)2.'db4'); % use db4 wavelet to read the sound file2Ca2 = AppCoef (C, L,'db4'.2); % extract2Low frequency and high frequency coefficients cd2= DetCoef (C, L,2); 
cd1=detcoef(c,l,1); lca=length(ca2); % low frequency length blocksize=fix(lca/(wrow*wcol)); 0 0 0 0 0 0 0 0 0 01,wrow*wcol); % Convert the scrambled watermark to a one-dimensional wlength=wrow*wcol; % Watermark length a=0.25; % quantization step j=1;
for i=1:wlength
    Block=ca2(j:j+blocksize- 1);
    [U,S,V]=svd(double(Block)); 
    cc=floor(S(1.1)/a);  
    if(Arnoldw(i)==1) % embed an odd multipleif(mod(cc,2) = =0)
            cc=cc+1;
        end
        S(1.1)=a*cc;
    end
    if(Arnoldw(i)==0)% is embedded in even multiplesif(mod(cc,2) = =1)  
            cc=cc+1;
        end
        S(1.1)=a*cc;
    end
    Blockw=U*S*V'; %SVD inverse transformation to reduce Ca2 (j:j+blocksize- 1)=Blockw; 
    j=j+blocksize;
end
c1=[ca2',cd2',cd1']';
MarkedX=waverec(c1,l,'db4'); %b is the audio data subplot(2.2.3); 
plot(MarkedX);
title('Audio after embedding watermark'); 
sound(MarkedX,fs);
handles.MarkedX=MarkedX;
handles.key=key;
guidata(hObject, handles);

% --- Executes on button press in pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)% watermark embedding -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- [c] l=wavedec(X,2.'db4'); % use db4 wavelet to read the sound file2Ca2 = AppCoef (C, L,'db4'.2); % extract2Low frequency and high frequency coefficients cd2= DetCoef (C, L,2); 
cd1=detcoef(c,l,1); lca=length(ca2); % low frequency length blocksize=fix(lca/(wrow*wcol)); 0 0 0 0 0 0 0 0 0 01,wrow*wcol); % Convert the scrambled watermark to a one-dimensional wlength=wrow*wcol; % Watermark length a=0.25; % quantization step j=1;
for i=1:wlength
    Block=ca2(j:j+blocksize- 1);
    [U,S,V]=svd(double(Block)); 
    cc=floor(S(1.1)/a);  
    if(Arnoldw(i)==1) % embed an odd multipleif(mod(cc,2) = =0)
            cc=cc+1;
        end
        S(1.1)=a*cc;
    end
    if(Arnoldw(i)==0)% is embedded in even multiplesif(mod(cc,2) = =1)  
            cc=cc+1;
        end
        S(1.1)=a*cc;
    end
    Blockw=U*S*V'; %SVD inverse transformation to reduce Ca2 (j:j+blocksize- 1)=Blockw; 
    j=j+blocksize;
end
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Version: 2014 a