Ionic 4 : Recording Audio and Send to Server (File has been corrupted) - angular6

Question

I would like to record the audio file in mobile application(iOS & Android) and tranfer to server as a formData in ionic 4. I have used the "cordova-plugin-media" to capture the audio using below logics
if (this.platform.is('ios')) {
this.filePaths = this.file.documentsDirectory;
this.fileExtension = '.m4a';
} else if (this.platform.is('android')) {
this.filePaths = this.file.externalDataDirectory;
this.fileExtension = '.3gp';
}
this.fileName = 'recording'+new Date().getHours()+new Date().getMinutes()+new Date().getSeconds()+this.fileExtension;
if(this.filePaths) {
this.file.createFile(this.filePaths,this.fileName,true).then((entry:FileEntry)=> {
this.audio = this.media.create(entry.toInternalURL());
this.audio.startRecord();
});
}
Even I have tried to create the media directly without "File Creation"
I can record and play the audio, but If I am trying to send this file
to server using below logics It won't send properly(corrupted data)
and also web application unable to play .m4a extensions
.
Please correct me If I am doing anything wrong in my code
Upload logic:
let formData:FormData = new FormData();
formData.append('recordID' , feedbackID);
that.file.readAsDataURL(filePath,file.name).then((data)=>{
const audioBlob = new Blob([data], { type: file.type });
formData.append('files', audioBlob, file.name);
that.uploadFormData(formData,feedbackID); //POST Logics -
})
;
I have used the soultion as suggested by Ankush and it works fine.
Used readAsArrayBuffer instead of readAsDataURL.
The .m4a format has supported both ios and android. Also I can
download the the same file from web application.

Answer 1

I am using below code to upload the image to the server. I assume that only a few modifications will be required in this code to transfer media instead of the image file.
private uploadPicture(imagePath: string, apiUrl: string): Observable<ApiResponse<ImageUploadResponseModel>> {
return this.convertFileFromFilePathToBlob(imagePath).pipe(
switchMap(item => this.convertBlobToFormData(item)),
switchMap(formData => this.postImageToServer(formData, apiUrl))
);
}
Rest functions used in above code:
private postImageToServer(formData: FormData, apiUrl: string): Observable<ApiResponse<ImageUploadResponseModel>> {
const requestHeaders = new HttpHeaders({ enctype: 'multipart/form-data' });
return this.http.post<ApiResponse<ImageUploadResponseModel>>(apiUrl, formData, { headers: requestHeaders });
}
private convertBlobToFormData(blob: Blob): Observable<FormData> {
return new Observable<FormData>(subscriber => {
// A Blob() is almost a File() - it's just missing the two properties below which we will add
// tslint:disable-next-line: no-string-literal
blob['lastModifiedDate'] = new Date();
// tslint:disable-next-line: no-string-literal
blob['name'] = 'sample.jpeg';
const formData = new FormData();
formData.append('file', blob as Blob, 'sample.jpeg');
subscriber.next(formData);
subscriber.complete();
});
}
private convertFileFromFilePathToBlob(imagePath: string): Observable<Blob> {
return new Observable<Blob>(subscriber => {
const directoryPath = imagePath.substr(0, imagePath.lastIndexOf('/'));
let fileName = imagePath.split('/').pop();
fileName = fileName.split('?')[0];
this.file.readAsArrayBuffer(directoryPath, fileName).then(fileEntry => {
const imgBlob: any = new Blob([fileEntry], { type: 'image/jpeg' });
imgBlob.name = 'sample.jpeg';
subscriber.next(imgBlob);
subscriber.complete();
}, () => {
subscriber.error('Some error occured while reading image from the filepath.');
});
});
}