matlab-mp3播放器源代码(共5页)

1、function varargout = MP3player(varargin)% MP3player MATLAB code for MP3player.fig% MP3player, by itself, creates a new MP3player or raises the existing% singleton*.% H = MP3player returns the handle to a new MP3player or the handle to% the existing singleton*.% MP3player(CALLBACK,hObject,eventData,h

2、andles,.) calls the local% function named CALLBACK in MP3player.M with the given input arguments.% MP3player(Property,Value,.) creates a new MP3player or raises the% existing singleton*. Starting from the left, property value pairs are% applied to the GUI before MP3player_OpeningFcn gets called. An%

3、 unrecognized property name or invalid value makes property application% stop. All inputs are passed to MP3player_OpeningFcn via varargin.% *See GUI Options on GUIDEs Tools menu. Choose GUI allows only one% instance to run (singleton).% See also: GUIDE, GUIDATA, GUIHANDLES % Edit the above text to m

4、odify the response to help MP3player % Last Modified by GUIDE v2.5 01-Nov-2014 21:41:05 % Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct(gui_Name, mfilename, . gui_Singleton, gui_Singleton, . gui_OpeningFcn, MP3player_OpeningFcn, . gui_OutputFcn, MP3player_OutputFcn, . g

5、ui_LayoutFcn, , . gui_Callback, );if nargin & ischar(varargin1) gui_State.gui_Callback = str2func(varargin1);end if nargout varargout1:nargout = gui_mainfcn(gui_State, varargin:);else gui_mainfcn(gui_State, varargin:);end% End initialization code - DO NOT EDIT % - Executes just before MP3player is m

6、ade visible.function MP3player_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

7、 line arguments to MP3player (see VARARGIN) % Choose default command line output for MP3playerhandles.output = hObject; % Update handles structureguidata(hObject, handles); % UIWAIT makes MP3player wait for user response (see UIRESUME)% uiwait(handles.figure1); % - Outputs from this function are ret

8、urned to the command line.function varargout = MP3player_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

9、(see GUIDATA) % Get default command line output from handles structurevarargout1 = handles.output; function Path_Callback(hObject, eventdata, handles) % hObject handle to Path (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (

10、see GUIDATA) % Hints: get(hObject,String) returns contents of Path as text% str2double(get(hObject,String) returns contents of Path as a double % - Executes during object creation, after setting all properties.function Path_CreateFcn(hObject, eventdata, handles) % hObject handle to Path (see GCBO)%

11、eventdata reserved - to be defined in a future version of MATLAB% handles empty - handles not created until after all CreateFcns called % Hint: edit controls usually have a white background on Windows.% See ISPC and COMPUTER.if ispc & isequal(get(hObject,BackgroundColor), get(0,defaultUicontrolBackg

12、roundColor) set(hObject,BackgroundColor,white);end % - Executes on button press in browse.function browse_Callback(hObject, eventdata, handles)global audio Y FSFileName,FilePath=uigetfile(*.MP3,Select the M-File);PathName=sprintf(%s%s,FilePath,FileName);set(handles.Path,string,PathName);mp3PathName=

13、get(handles.Path,string);Y,FS=audioread(mp3PathName);audio=audioplayer(Y,FS); % hObject handle to browse (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA) % - Executes on button press in play.function play_Callbac

14、k(, eventdata, handles)global audio FS Yaxes(handles.axes1);hold on;plot(Y, b); % plot audio datatitle(Audio Data);xlabel(strcat(Sample Number (fs = , num2str(FS), );ylabel(Amplitude);ylimits = get(gca, YLim); % get the y-axis limitsplotdata = ylimits(1):0.1:ylimits(2);hline = plot(repmat(0, size(pl

15、otdata), plotdata, r); % plot the marker% instantiate the audioplayer objectaudio = audioplayer(Y, FS); % setup the timer for the audioplayer objectaudio.TimerFcn = plotMarker, audio, gcf, plotdata; % timer callback function (defined below)audio.TimerPeriod = 0.01; % period of the timer in seconds %

16、 start playing the audio% this will move the marker over the audio plot at intervals of 0.01 splay(audio);% play(audio);% axes(handles.axes1);% plot(Y, b); % plot audio data% title(Audio Data);% xlabel(strcat(Sample Number (fs = , num2str(Fs), );% ylabel(Amplitude); % hObject handle to play (see GCB

17、O)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA) % - Executes during object creation, after setting all properties.function axes1_CreateFcn(hObject, eventdata, handles) % hObject handle to axes1 (see GCBO)% eventdata res

18、erved - to be defined in a future version of MATLAB% handles empty - handles not created until after all CreateFcns called % Hint: place code in OpeningFcn to populate axes1 % - Executes on button press in pause.function pause_Callback(hObject, eventdata, handles)global audiopause(audio);% hObject h

19、andle to pause (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA) % - Executes on button press in stop.function stop_Callback(hObject, eventdata, handles)global audiostop(audio);% hObject handle to stop (see GCBO)%

20、 eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA) % - Executes on button press in resume.function resume_Callback(hObject, eventdata, handles)global audioresume(audio);% hObject handle to resume (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)function plotMarker(. h0bject, . % refers to the object that called this function (necessary parameter for all callback functions) eventdata,