mirror of
https://gitee.com/shuto/cordova-plugin-camera.git
synced 2024-10-06 17:22:06 +08:00
Fix camera issues, cropping, memory leaks CB-4027, CB-5102, CB-2737, CB-2387
This commit is contained in:
Jesse MacFadyen
parent
91d6e10b29
commit
e7a3d70fe9
228
src/wp/Camera.cs
228
src/wp/Camera.cs
@ -113,8 +113,6 @@ namespace WPCordovaClassLib.Cordova.Commands
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[DataMember(IsRequired = false, Name = "correctOrientation")]
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public bool CorrectOrientation { get; set; }
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/// <summary>
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/// Ignored
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/// </summary>
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@ -176,16 +174,6 @@ namespace WPCordovaClassLib.Cordova.Commands
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}
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}
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/// <summary>
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/// Used to open photo library
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/// </summary>
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PhotoChooserTask photoChooserTask;
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/// <summary>
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/// Used to open camera application
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/// </summary>
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CameraCaptureTask cameraTask;
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/// <summary>
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/// Camera options
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/// </summary>
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@ -198,20 +186,17 @@ namespace WPCordovaClassLib.Cordova.Commands
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string[] args = JSON.JsonHelper.Deserialize<string[]>(options);
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// ["quality", "destinationType", "sourceType", "targetWidth", "targetHeight", "encodingType",
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// "mediaType", "allowEdit", "correctOrientation", "saveToPhotoAlbum" ]
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this.cameraOptions = new CameraOptions();
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this.cameraOptions.Quality = int.Parse(args[0]);
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this.cameraOptions.DestinationType = int.Parse(args[1]);
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this.cameraOptions.PictureSourceType = int.Parse(args[2]);
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this.cameraOptions.TargetWidth = int.Parse(args[3]);
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this.cameraOptions.TargetHeight = int.Parse(args[4]);
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this.cameraOptions.EncodingType = int.Parse(args[5]);
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this.cameraOptions.MediaType = int.Parse(args[6]);
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this.cameraOptions.AllowEdit = bool.Parse(args[7]);
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this.cameraOptions.CorrectOrientation = bool.Parse(args[8]);
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this.cameraOptions.SaveToPhotoAlbum = bool.Parse(args[9]);
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//this.cameraOptions = String.IsNullOrEmpty(options) ?
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// new CameraOptions() : JSON.JsonHelper.Deserialize<CameraOptions>(options);
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cameraOptions = new CameraOptions();
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cameraOptions.Quality = int.Parse(args[0]);
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cameraOptions.DestinationType = int.Parse(args[1]);
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cameraOptions.PictureSourceType = int.Parse(args[2]);
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cameraOptions.TargetWidth = int.Parse(args[3]);
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cameraOptions.TargetHeight = int.Parse(args[4]);
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cameraOptions.EncodingType = int.Parse(args[5]);
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cameraOptions.MediaType = int.Parse(args[6]);
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cameraOptions.AllowEdit = bool.Parse(args[7]);
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cameraOptions.CorrectOrientation = bool.Parse(args[8]);
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cameraOptions.SaveToPhotoAlbum = bool.Parse(args[9]);
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}
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catch (Exception ex)
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{
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@ -224,28 +209,32 @@ namespace WPCordovaClassLib.Cordova.Commands
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if (cameraOptions.PictureSourceType == CAMERA)
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{
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cameraTask = new CameraCaptureTask();
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CameraCaptureTask cameraTask = new CameraCaptureTask();
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cameraTask.Completed += onCameraTaskCompleted;
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cameraTask.Show();
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}
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else if ((cameraOptions.PictureSourceType == PHOTOLIBRARY) || (cameraOptions.PictureSourceType == SAVEDPHOTOALBUM))
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{
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PhotoChooserTask photoChooserTask = new PhotoChooserTask();
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photoChooserTask.Completed += onPickerTaskCompleted;
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photoChooserTask.Show();
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}
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else
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{
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if ((cameraOptions.PictureSourceType == PHOTOLIBRARY) || (cameraOptions.PictureSourceType == SAVEDPHOTOALBUM))
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{
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photoChooserTask = new PhotoChooserTask();
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photoChooserTask.Completed += onPickerTaskCompleted;
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photoChooserTask.Show();
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}
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else
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{
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DispatchCommandResult(new PluginResult(PluginResult.Status.NO_RESULT));
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}
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DispatchCommandResult(new PluginResult(PluginResult.Status.NO_RESULT));
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}
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}
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public void onCameraTaskCompleted(object sender, PhotoResult e)
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{
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var task = sender as ChooserBase<PhotoResult>;
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if (task != null)
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{
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task.Completed -= onCameraTaskCompleted;
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}
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if (e.Error != null)
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{
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DispatchCommandResult(new PluginResult(PluginResult.Status.ERROR));
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@ -289,10 +278,7 @@ namespace WPCordovaClassLib.Cordova.Commands
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// we should return stream position back after saving stream to media library
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rotImageStream.Seek(0, SeekOrigin.Begin);
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WriteableBitmap image = PictureDecoder.DecodeJpeg(rotImageStream);
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imagePathOrContent = this.SaveImageToLocalStorage(image, Path.GetFileName(e.OriginalFileName));
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imagePathOrContent = this.SaveImageToLocalStorage(rotImageStream, Path.GetFileName(e.OriginalFileName));
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}
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@ -329,6 +315,12 @@ namespace WPCordovaClassLib.Cordova.Commands
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public void onPickerTaskCompleted(object sender, PhotoResult e)
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{
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var task = sender as ChooserBase<PhotoResult>;
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if (task != null)
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{
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task.Completed -= onCameraTaskCompleted;
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}
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if (e.Error != null)
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{
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DispatchCommandResult(new PluginResult(PluginResult.Status.ERROR));
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@ -344,8 +336,7 @@ namespace WPCordovaClassLib.Cordova.Commands
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if (cameraOptions.DestinationType == FILE_URI)
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{
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WriteableBitmap image = PictureDecoder.DecodeJpeg(e.ChosenPhoto);
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imagePathOrContent = this.SaveImageToLocalStorage(image, Path.GetFileName(e.OriginalFileName));
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imagePathOrContent = this.SaveImageToLocalStorage(e.ChosenPhoto, Path.GetFileName(e.OriginalFileName));
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}
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else if (cameraOptions.DestinationType == DATA_URL)
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{
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@ -385,23 +376,29 @@ namespace WPCordovaClassLib.Cordova.Commands
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/// <returns>Base64 representation of the image</returns>
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private string GetImageContent(Stream stream)
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{
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int streamLength = (int)stream.Length;
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byte[] fileData = new byte[streamLength + 1];
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stream.Read(fileData, 0, streamLength);
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byte[] imageContent = null;
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//use photo's actual width & height if user doesn't provide width & height
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if (cameraOptions.TargetWidth < 0 && cameraOptions.TargetHeight < 0)
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try
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{
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stream.Close();
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return Convert.ToBase64String(fileData);
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//use photo's actual width & height if user doesn't provide width & height
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if (cameraOptions.TargetWidth < 0 && cameraOptions.TargetHeight < 0)
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{
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int streamLength = (int)stream.Length;
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imageContent = new byte[streamLength + 1];
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stream.Read(imageContent, 0, streamLength);
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}
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else
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{
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// resize photo
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imageContent = ResizePhoto(stream);
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}
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}
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else
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finally
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{
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// resize photo
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byte[] resizedFile = ResizePhoto(stream, fileData);
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stream.Close();
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return Convert.ToBase64String(resizedFile);
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stream.Dispose();
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}
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return Convert.ToBase64String(imageContent);
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}
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/// <summary>
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@ -410,51 +407,87 @@ namespace WPCordovaClassLib.Cordova.Commands
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/// <param name="stream">Image stream</param>
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/// <param name="fileData">File data</param>
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/// <returns>resized image</returns>
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private byte[] ResizePhoto(Stream stream, byte[] fileData)
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private byte[] ResizePhoto(Stream stream)
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{
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int streamLength = (int)stream.Length;
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int intResult = 0;
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//output
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byte[] resizedFile;
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stream.Read(fileData, 0, streamLength);
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BitmapImage objBitmap = new BitmapImage();
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MemoryStream objBitmapStream = new MemoryStream(fileData);
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MemoryStream objBitmapStreamResized = new MemoryStream();
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WriteableBitmap objWB;
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objBitmap.SetSource(stream);
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objWB = new WriteableBitmap(objBitmap);
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objBitmap.CreateOptions = BitmapCreateOptions.None;
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// resize the photo with user defined TargetWidth & TargetHeight
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Extensions.SaveJpeg(objWB, objBitmapStreamResized, cameraOptions.TargetWidth, cameraOptions.TargetHeight, 0, cameraOptions.Quality);
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WriteableBitmap objWB = new WriteableBitmap(objBitmap);
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objBitmap.UriSource = null;
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//Convert the resized stream to a byte array.
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streamLength = (int)objBitmapStreamResized.Length;
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resizedFile = new Byte[streamLength]; //-1
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objBitmapStreamResized.Position = 0;
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//for some reason we have to set Position to zero, but we don't have to earlier when we get the bytes from the chosen photo...
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intResult = objBitmapStreamResized.Read(resizedFile, 0, streamLength);
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//Keep proportionally
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double ratio = Math.Min((double)cameraOptions.TargetWidth / objWB.PixelWidth, (double)cameraOptions.TargetHeight / objWB.PixelHeight);
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int width = Convert.ToInt32(ratio * objWB.PixelWidth);
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int height = Convert.ToInt32(ratio * objWB.PixelHeight);
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//Hold the result stream
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using (MemoryStream objBitmapStreamResized = new MemoryStream())
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{
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try
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{
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// resize the photo with user defined TargetWidth & TargetHeight
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Extensions.SaveJpeg(objWB, objBitmapStreamResized, width, height, 0, cameraOptions.Quality);
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}
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finally
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{
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//Dispose bitmaps immediately, they are memory expensive
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DisposeImage(objBitmap);
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DisposeImage(objWB);
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GC.Collect();
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}
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//Convert the resized stream to a byte array.
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int streamLength = (int)objBitmapStreamResized.Length;
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resizedFile = new Byte[streamLength]; //-1
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objBitmapStreamResized.Position = 0;
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//for some reason we have to set Position to zero, but we don't have to earlier when we get the bytes from the chosen photo...
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objBitmapStreamResized.Read(resizedFile, 0, streamLength);
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}
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return resizedFile;
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}
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/// <summary>
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/// Util: Dispose a bitmap resource
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/// </summary>
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/// <param name="image">BitmapSource subclass to dispose</param>
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private void DisposeImage(BitmapSource image)
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{
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if (image != null)
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{
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try
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{
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using (var ms = new MemoryStream(new byte[] { 0x0 }))
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{
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image.SetSource(ms);
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}
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}
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catch (Exception)
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{
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}
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}
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}
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/// <summary>
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/// Saves captured image in isolated storage
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/// </summary>
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/// <param name="imageFileName">image file name</param>
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/// <returns>Image path</returns>
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private string SaveImageToLocalStorage(WriteableBitmap image, string imageFileName)
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private string SaveImageToLocalStorage(Stream stream, string imageFileName)
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{
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if (image == null)
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if (stream == null)
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{
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throw new ArgumentNullException("imageBytes");
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}
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try
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{
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var isoFile = IsolatedStorageFile.GetUserStoreForApplication();
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if (!isoFile.DirectoryExists(isoFolder))
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@ -464,16 +497,41 @@ namespace WPCordovaClassLib.Cordova.Commands
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string filePath = System.IO.Path.Combine("///" + isoFolder + "/", imageFileName);
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using (var stream = isoFile.CreateFile(filePath))
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using (IsolatedStorageFileStream outputStream = isoFile.CreateFile(filePath))
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{
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// resize image if Height and Width defined via options
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if (cameraOptions.TargetHeight > 0 && cameraOptions.TargetWidth > 0)
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BitmapImage objBitmap = new BitmapImage();
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objBitmap.SetSource(stream);
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objBitmap.CreateOptions = BitmapCreateOptions.None;
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WriteableBitmap objWB = new WriteableBitmap(objBitmap);
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objBitmap.UriSource = null;
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try
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{
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image.SaveJpeg(stream, cameraOptions.TargetWidth, cameraOptions.TargetHeight, 0, cameraOptions.Quality);
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//use photo's actual width & height if user doesn't provide width & height
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if (cameraOptions.TargetWidth < 0 && cameraOptions.TargetHeight < 0)
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{
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objWB.SaveJpeg(outputStream, objWB.PixelWidth, objWB.PixelHeight, 0, cameraOptions.Quality);
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}
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else
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{
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//Resize
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//Keep proportionally
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double ratio = Math.Min((double)cameraOptions.TargetWidth / objWB.PixelWidth, (double)cameraOptions.TargetHeight / objWB.PixelHeight);
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int width = Convert.ToInt32(ratio * objWB.PixelWidth);
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int height = Convert.ToInt32(ratio * objWB.PixelHeight);
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// resize the photo with user defined TargetWidth & TargetHeight
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objWB.SaveJpeg(outputStream, width, height, 0, cameraOptions.Quality);
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}
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}
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else
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finally
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{
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image.SaveJpeg(stream, image.PixelWidth, image.PixelHeight, 0, cameraOptions.Quality);
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//Dispose bitmaps immediately, they are memory expensive
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DisposeImage(objBitmap);
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DisposeImage(objWB);
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GC.Collect();
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}
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}
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@ -484,6 +542,10 @@ namespace WPCordovaClassLib.Cordova.Commands
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//TODO: log or do something else
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throw;
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}
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finally
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{
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stream.Dispose();
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}
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}
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}
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