forked from github/cordova-android
Fix for issue #141: EXIF data stripped from captured photos in android
In order to fix this issue I needed to read the EXIF data. Save it to a temporary object then after the bitmap is compressed I open the file and write the saved EXIF data. Supports the following EXIF fields if they are set in your image: APERTURE DATETIME EXPOSURE_TIME FLASH FOCAL_LENGTH GPS_ALTITUDE GPS_ALTITUDE_REF GPS_DATESTAMP GPS_LATITUDE GPS_LATITUDE_REF GPS_LONGITUDE GPS_LONGITUDE_REF GPS_PROCESSING_METHOD GPS_TIMESTAMP ISO MAKE MODEL ORIENTATION WHITE_BALANCE
This commit is contained in:
macdonst
@@ -35,100 +35,102 @@ import android.util.Log;
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*/
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public class CameraLauncher extends Plugin {
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private static final int DATA_URL = 0; // Return base64 encoded string
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private static final int FILE_URI = 1; // Return file uri (content://media/external/images/media/2 for Android)
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private static final int PHOTOLIBRARY = 0; // Choose image from picture library (same as SAVEDPHOTOALBUM for Android)
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private static final int CAMERA = 1; // Take picture from camera
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private static final int SAVEDPHOTOALBUM = 2; // Choose image from picture library (same as PHOTOLIBRARY for Android)
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private static final int JPEG = 0; // Take a picture of type JPEG
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private static final int PNG = 1; // Take a picture of type PNG
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private int mQuality; // Compression quality hint (0-100: 0=low quality & high compression, 100=compress of max quality)
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private int targetWidth; // desired width of the image
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private int targetHeight; // desired height of the image
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private Uri imageUri; // Uri of captured image
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public String callbackId;
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private static final int DATA_URL = 0; // Return base64 encoded string
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private static final int FILE_URI = 1; // Return file uri (content://media/external/images/media/2 for Android)
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private static final int PHOTOLIBRARY = 0; // Choose image from picture library (same as SAVEDPHOTOALBUM for Android)
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private static final int CAMERA = 1; // Take picture from camera
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private static final int SAVEDPHOTOALBUM = 2; // Choose image from picture library (same as PHOTOLIBRARY for Android)
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private static final int JPEG = 0; // Take a picture of type JPEG
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private static final int PNG = 1; // Take a picture of type PNG
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private int mQuality; // Compression quality hint (0-100: 0=low quality & high compression, 100=compress of max quality)
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private int targetWidth; // desired width of the image
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private int targetHeight; // desired height of the image
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private Uri imageUri;
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private int encodingType;
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// Uri of captured image
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public String callbackId;
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/**
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* Constructor.
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*/
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public CameraLauncher() {
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}
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public CameraLauncher() {
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}
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/**
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* Executes the request and returns PluginResult.
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*
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* @param action The action to execute.
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* @param args JSONArry of arguments for the plugin.
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* @param callbackId The callback id used when calling back into JavaScript.
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* @return A PluginResult object with a status and message.
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*/
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public PluginResult execute(String action, JSONArray args, String callbackId) {
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PluginResult.Status status = PluginResult.Status.OK;
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String result = "";
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this.callbackId = callbackId;
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try {
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if (action.equals("takePicture")) {
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int destType = DATA_URL;
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if (args.length() > 1) {
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destType = args.getInt(1);
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}
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int srcType = CAMERA;
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if (args.length() > 2) {
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srcType = args.getInt(2);
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}
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/**
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* Executes the request and returns PluginResult.
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*
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* @param action The action to execute.
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* @param args JSONArry of arguments for the plugin.
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* @param callbackId The callback id used when calling back into JavaScript.
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* @return A PluginResult object with a status and message.
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*/
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public PluginResult execute(String action, JSONArray args, String callbackId) {
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PluginResult.Status status = PluginResult.Status.OK;
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String result = "";
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this.callbackId = callbackId;
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try {
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if (action.equals("takePicture")) {
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int destType = DATA_URL;
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if (args.length() > 1) {
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destType = args.getInt(1);
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}
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int srcType = CAMERA;
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if (args.length() > 2) {
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srcType = args.getInt(2);
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}
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if (args.length() > 3) {
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this.targetWidth = args.getInt(3);
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}
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if (args.length() > 4) {
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this.targetHeight = args.getInt(4);
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}
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int encodingType = JPEG;
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this.encodingType = JPEG;
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if (args.length() > 5) {
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encodingType = args.getInt(5);
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this.encodingType = args.getInt(5);
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}
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if (srcType == CAMERA) {
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this.takePicture(args.getInt(0), destType, encodingType);
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}
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else if ((srcType == PHOTOLIBRARY) || (srcType == SAVEDPHOTOALBUM)) {
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this.getImage(args.getInt(0), srcType, destType);
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}
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PluginResult r = new PluginResult(PluginResult.Status.NO_RESULT);
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r.setKeepCallback(true);
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return r;
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}
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return new PluginResult(status, result);
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} catch (JSONException e) {
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e.printStackTrace();
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return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
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}
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}
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if (srcType == CAMERA) {
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this.takePicture(args.getInt(0), destType, encodingType);
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}
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else if ((srcType == PHOTOLIBRARY) || (srcType == SAVEDPHOTOALBUM)) {
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this.getImage(args.getInt(0), srcType, destType);
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}
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PluginResult r = new PluginResult(PluginResult.Status.NO_RESULT);
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r.setKeepCallback(true);
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return r;
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}
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return new PluginResult(status, result);
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} catch (JSONException e) {
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e.printStackTrace();
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return new PluginResult(PluginResult.Status.JSON_EXCEPTION);
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}
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}
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//--------------------------------------------------------------------------
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// LOCAL METHODS
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//--------------------------------------------------------------------------
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/**
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* Take a picture with the camera.
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* When an image is captured or the camera view is cancelled, the result is returned
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* in PhonegapActivity.onActivityResult, which forwards the result to this.onActivityResult.
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*
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* The image can either be returned as a base64 string or a URI that points to the file.
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* To display base64 string in an img tag, set the source to:
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* img.src="data:image/jpeg;base64,"+result;
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* or to display URI in an img tag
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* img.src=result;
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*
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* @param quality Compression quality hint (0-100: 0=low quality & high compression, 100=compress of max quality)
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* @param returnType Set the type of image to return.
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*/
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public void takePicture(int quality, int returnType, int encodingType) {
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this.mQuality = quality;
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// Display camera
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/**
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* Take a picture with the camera.
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* When an image is captured or the camera view is cancelled, the result is returned
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* in PhonegapActivity.onActivityResult, which forwards the result to this.onActivityResult.
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*
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* The image can either be returned as a base64 string or a URI that points to the file.
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* To display base64 string in an img tag, set the source to:
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* img.src="data:image/jpeg;base64,"+result;
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* or to display URI in an img tag
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* img.src=result;
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*
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* @param quality Compression quality hint (0-100: 0=low quality & high compression, 100=compress of max quality)
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* @param returnType Set the type of image to return.
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*/
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public void takePicture(int quality, int returnType, int encodingType) {
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this.mQuality = quality;
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// Display camera
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Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
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// Specify file so that large image is captured and returned
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@@ -138,14 +140,14 @@ public class CameraLauncher extends Plugin {
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this.imageUri = Uri.fromFile(photo);
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this.ctx.startActivityForResult((Plugin) this, intent, (CAMERA+1)*16 + returnType+1);
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}
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}
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/**
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* Create a file in the applications temporary directory based upon the supplied encoding.
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*
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* @param encodingType of the image to be taken
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* @return a File object pointing to the temporary picture
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*/
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/**
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* Create a file in the applications temporary directory based upon the supplied encoding.
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*
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* @param encodingType of the image to be taken
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* @return a File object pointing to the temporary picture
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*/
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private File createCaptureFile(int encodingType) {
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File photo = null;
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if (encodingType == JPEG) {
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@@ -157,46 +159,46 @@ public class CameraLauncher extends Plugin {
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}
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/**
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* Get image from photo library.
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*
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* @param quality Compression quality hint (0-100: 0=low quality & high compression, 100=compress of max quality)
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* @param srcType The album to get image from.
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* @param returnType Set the type of image to return.
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*/
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// TODO: Images selected from SDCARD don't display correctly, but from CAMERA ALBUM do!
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public void getImage(int quality, int srcType, int returnType) {
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this.mQuality = quality;
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* Get image from photo library.
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*
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* @param quality Compression quality hint (0-100: 0=low quality & high compression, 100=compress of max quality)
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* @param srcType The album to get image from.
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* @param returnType Set the type of image to return.
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*/
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// TODO: Images selected from SDCARD don't display correctly, but from CAMERA ALBUM do!
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public void getImage(int quality, int srcType, int returnType) {
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this.mQuality = quality;
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Intent intent = new Intent();
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intent.setType("image/*");
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intent.setAction(Intent.ACTION_GET_CONTENT);
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intent.addCategory(Intent.CATEGORY_OPENABLE);
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this.ctx.startActivityForResult((Plugin) this, Intent.createChooser(intent,
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new String("Get Picture")), (srcType+1)*16 + returnType + 1);
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}
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Intent intent = new Intent();
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intent.setType("image/*");
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intent.setAction(Intent.ACTION_GET_CONTENT);
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intent.addCategory(Intent.CATEGORY_OPENABLE);
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this.ctx.startActivityForResult((Plugin) this, Intent.createChooser(intent,
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new String("Get Picture")), (srcType+1)*16 + returnType + 1);
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}
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/**
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* Scales the bitmap according to the requested size.
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*
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* @param bitmap The bitmap to scale.
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* @return Bitmap A new Bitmap object of the same bitmap after scaling.
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*/
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public Bitmap scaleBitmap(Bitmap bitmap) {
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/**
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* Scales the bitmap according to the requested size.
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*
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* @param bitmap The bitmap to scale.
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* @return Bitmap A new Bitmap object of the same bitmap after scaling.
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*/
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public Bitmap scaleBitmap(Bitmap bitmap) {
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int newWidth = this.targetWidth;
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int newHeight = this.targetHeight;
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int origWidth = bitmap.getWidth();
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int origHeight = bitmap.getHeight();
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// If no new width or height were specified return the original bitmap
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if (newWidth <= 0 && newHeight <= 0) {
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return bitmap;
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}
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// Only the width was specified
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else if (newWidth > 0 && newHeight <= 0) {
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if (newWidth <= 0 && newHeight <= 0) {
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return bitmap;
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}
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// Only the width was specified
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else if (newWidth > 0 && newHeight <= 0) {
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newHeight = (newWidth * origHeight) / origWidth;
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}
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// only the height was specified
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else if (newWidth <= 0 && newHeight > 0) {
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// only the height was specified
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else if (newWidth <= 0 && newHeight > 0) {
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newWidth = (newHeight * origWidth) / origHeight;
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}
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// If the user specified both a positive width and height
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@@ -205,7 +207,7 @@ public class CameraLauncher extends Plugin {
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// Alternatively, the specified width and height could have been
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// kept and Bitmap.SCALE_TO_FIT specified when scaling, but this
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// would result in whitespace in the new image.
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else {
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else {
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double newRatio = newWidth / (double)newHeight;
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double origRatio = origWidth / (double)origHeight;
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@@ -217,156 +219,169 @@ public class CameraLauncher extends Plugin {
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}
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return Bitmap.createScaledBitmap(bitmap, newWidth, newHeight, true);
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}
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}
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/**
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* Called when the camera view exits.
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*
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* @param requestCode The request code originally supplied to startActivityForResult(),
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* allowing you to identify who this result came from.
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* @param resultCode The integer result code returned by the child activity through its setResult().
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* @param intent An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
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* @param requestCode The request code originally supplied to startActivityForResult(),
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* allowing you to identify who this result came from.
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* @param resultCode The integer result code returned by the child activity through its setResult().
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* @param intent An Intent, which can return result data to the caller (various data can be attached to Intent "extras").
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*/
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public void onActivityResult(int requestCode, int resultCode, Intent intent) {
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// Get src and dest types from request code
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int srcType = (requestCode/16) - 1;
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int destType = (requestCode % 16) - 1;
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public void onActivityResult(int requestCode, int resultCode, Intent intent) {
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// Get src and dest types from request code
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int srcType = (requestCode/16) - 1;
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int destType = (requestCode % 16) - 1;
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// If CAMERA
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if (srcType == CAMERA) {
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// If image available
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if (resultCode == Activity.RESULT_OK) {
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try {
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// Read in bitmap of captured image
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Bitmap bitmap;
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try {
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bitmap = android.provider.MediaStore.Images.Media.getBitmap(this.ctx.getContentResolver(), imageUri);
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} catch (FileNotFoundException e) {
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Uri uri = intent.getData();
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android.content.ContentResolver resolver = this.ctx.getContentResolver();
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bitmap = android.graphics.BitmapFactory.decodeStream(resolver.openInputStream(uri));
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}
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// If CAMERA
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if (srcType == CAMERA) {
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// If image available
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if (resultCode == Activity.RESULT_OK) {
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try {
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// Create an ExifHelper to save the exif data that is lost during compression
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ExifHelper exif = new ExifHelper();
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if (this.encodingType == JPEG) {
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exif.createInFile(DirectoryManager.getTempDirectoryPath(ctx) + "/Pic.jpg");
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exif.readExifData();
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}
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bitmap = scaleBitmap(bitmap);
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// If sending base64 image back
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if (destType == DATA_URL) {
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this.processPicture(bitmap);
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}
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// Read in bitmap of captured image
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Bitmap bitmap;
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try {
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bitmap = android.provider.MediaStore.Images.Media.getBitmap(this.ctx.getContentResolver(), imageUri);
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} catch (FileNotFoundException e) {
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Uri uri = intent.getData();
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android.content.ContentResolver resolver = this.ctx.getContentResolver();
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bitmap = android.graphics.BitmapFactory.decodeStream(resolver.openInputStream(uri));
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}
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// If sending filename back
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else if (destType == FILE_URI){
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// Create entry in media store for image
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// (Don't use insertImage() because it uses default compression setting of 50 - no way to change it)
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ContentValues values = new ContentValues();
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values.put(android.provider.MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
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Uri uri = null;
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try {
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uri = this.ctx.getContentResolver().insert(android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
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} catch (UnsupportedOperationException e) {
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System.out.println("Can't write to external media storage.");
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try {
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uri = this.ctx.getContentResolver().insert(android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI, values);
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} catch (UnsupportedOperationException ex) {
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System.out.println("Can't write to internal media storage.");
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this.failPicture("Error capturing image - no media storage found.");
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return;
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}
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}
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bitmap = scaleBitmap(bitmap);
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// If sending base64 image back
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if (destType == DATA_URL) {
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this.processPicture(bitmap);
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}
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// Add compressed version of captured image to returned media store Uri
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OutputStream os = this.ctx.getContentResolver().openOutputStream(uri);
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bitmap.compress(Bitmap.CompressFormat.JPEG, this.mQuality, os);
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os.close();
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// If sending filename back
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else if (destType == FILE_URI){
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// Create entry in media store for image
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// (Don't use insertImage() because it uses default compression setting of 50 - no way to change it)
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ContentValues values = new ContentValues();
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values.put(android.provider.MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
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Uri uri = null;
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try {
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uri = this.ctx.getContentResolver().insert(android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
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} catch (UnsupportedOperationException e) {
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System.out.println("Can't write to external media storage.");
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try {
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uri = this.ctx.getContentResolver().insert(android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI, values);
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} catch (UnsupportedOperationException ex) {
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System.out.println("Can't write to internal media storage.");
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this.failPicture("Error capturing image - no media storage found.");
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return;
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}
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}
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// Send Uri back to JavaScript for viewing image
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this.success(new PluginResult(PluginResult.Status.OK, uri.toString()), this.callbackId);
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}
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bitmap.recycle();
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bitmap = null;
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System.gc();
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} catch (IOException e) {
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e.printStackTrace();
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this.failPicture("Error capturing image.");
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}
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}
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// Add compressed version of captured image to returned media store Uri
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OutputStream os = this.ctx.getContentResolver().openOutputStream(uri);
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bitmap.compress(Bitmap.CompressFormat.JPEG, this.mQuality, os);
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os.close();
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// Restore exif data to file
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if (this.encodingType == JPEG) {
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exif.createOutFile(FileUtils.getRealPathFromURI(uri, this.ctx));
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exif.writeExifData();
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}
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// If cancelled
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else if (resultCode == Activity.RESULT_CANCELED) {
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this.failPicture("Camera cancelled.");
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}
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// Send Uri back to JavaScript for viewing image
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this.success(new PluginResult(PluginResult.Status.OK, uri.toString()), this.callbackId);
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}
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bitmap.recycle();
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bitmap = null;
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System.gc();
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} catch (IOException e) {
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||||
e.printStackTrace();
|
||||
this.failPicture("Error capturing image.");
|
||||
}
|
||||
}
|
||||
|
||||
// If something else
|
||||
else {
|
||||
this.failPicture("Did not complete!");
|
||||
}
|
||||
}
|
||||
|
||||
// If retrieving photo from library
|
||||
else if ((srcType == PHOTOLIBRARY) || (srcType == SAVEDPHOTOALBUM)) {
|
||||
if (resultCode == Activity.RESULT_OK) {
|
||||
Uri uri = intent.getData();
|
||||
android.content.ContentResolver resolver = this.ctx.getContentResolver();
|
||||
// If sending base64 image back
|
||||
if (destType == DATA_URL) {
|
||||
try {
|
||||
Bitmap bitmap = android.graphics.BitmapFactory.decodeStream(resolver.openInputStream(uri));
|
||||
bitmap = scaleBitmap(bitmap);
|
||||
this.processPicture(bitmap);
|
||||
bitmap.recycle();
|
||||
bitmap = null;
|
||||
System.gc();
|
||||
} catch (FileNotFoundException e) {
|
||||
e.printStackTrace();
|
||||
this.failPicture("Error retrieving image.");
|
||||
}
|
||||
}
|
||||
|
||||
// If sending filename back
|
||||
else if (destType == FILE_URI) {
|
||||
this.success(new PluginResult(PluginResult.Status.OK, uri.toString()), this.callbackId);
|
||||
}
|
||||
}
|
||||
else if (resultCode == Activity.RESULT_CANCELED) {
|
||||
this.failPicture("Selection cancelled.");
|
||||
}
|
||||
else {
|
||||
this.failPicture("Selection did not complete!");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Compress bitmap using jpeg, convert to Base64 encoded string, and return to JavaScript.
|
||||
*
|
||||
* @param bitmap
|
||||
*/
|
||||
public void processPicture(Bitmap bitmap) {
|
||||
ByteArrayOutputStream jpeg_data = new ByteArrayOutputStream();
|
||||
try {
|
||||
if (bitmap.compress(CompressFormat.JPEG, mQuality, jpeg_data)) {
|
||||
byte[] code = jpeg_data.toByteArray();
|
||||
byte[] output = Base64.encodeBase64(code);
|
||||
String js_out = new String(output);
|
||||
this.success(new PluginResult(PluginResult.Status.OK, js_out), this.callbackId);
|
||||
js_out = null;
|
||||
output = null;
|
||||
code = null;
|
||||
}
|
||||
}
|
||||
catch(Exception e) {
|
||||
this.failPicture("Error compressing image.");
|
||||
}
|
||||
jpeg_data = null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Send error message to JavaScript.
|
||||
*
|
||||
* @param err
|
||||
*/
|
||||
public void failPicture(String err) {
|
||||
this.error(new PluginResult(PluginResult.Status.ERROR, err), this.callbackId);
|
||||
}
|
||||
}
|
||||
// If cancelled
|
||||
else if (resultCode == Activity.RESULT_CANCELED) {
|
||||
this.failPicture("Camera cancelled.");
|
||||
}
|
||||
|
||||
// If something else
|
||||
else {
|
||||
this.failPicture("Did not complete!");
|
||||
}
|
||||
}
|
||||
|
||||
// If retrieving photo from library
|
||||
else if ((srcType == PHOTOLIBRARY) || (srcType == SAVEDPHOTOALBUM)) {
|
||||
if (resultCode == Activity.RESULT_OK) {
|
||||
Uri uri = intent.getData();
|
||||
android.content.ContentResolver resolver = this.ctx.getContentResolver();
|
||||
// If sending base64 image back
|
||||
if (destType == DATA_URL) {
|
||||
try {
|
||||
Bitmap bitmap = android.graphics.BitmapFactory.decodeStream(resolver.openInputStream(uri));
|
||||
bitmap = scaleBitmap(bitmap);
|
||||
this.processPicture(bitmap);
|
||||
bitmap.recycle();
|
||||
bitmap = null;
|
||||
System.gc();
|
||||
} catch (FileNotFoundException e) {
|
||||
e.printStackTrace();
|
||||
this.failPicture("Error retrieving image.");
|
||||
}
|
||||
}
|
||||
|
||||
// If sending filename back
|
||||
else if (destType == FILE_URI) {
|
||||
this.success(new PluginResult(PluginResult.Status.OK, uri.toString()), this.callbackId);
|
||||
}
|
||||
}
|
||||
else if (resultCode == Activity.RESULT_CANCELED) {
|
||||
this.failPicture("Selection cancelled.");
|
||||
}
|
||||
else {
|
||||
this.failPicture("Selection did not complete!");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Compress bitmap using jpeg, convert to Base64 encoded string, and return to JavaScript.
|
||||
*
|
||||
* @param bitmap
|
||||
*/
|
||||
public void processPicture(Bitmap bitmap) {
|
||||
ByteArrayOutputStream jpeg_data = new ByteArrayOutputStream();
|
||||
try {
|
||||
if (bitmap.compress(CompressFormat.JPEG, mQuality, jpeg_data)) {
|
||||
byte[] code = jpeg_data.toByteArray();
|
||||
byte[] output = Base64.encodeBase64(code);
|
||||
String js_out = new String(output);
|
||||
this.success(new PluginResult(PluginResult.Status.OK, js_out), this.callbackId);
|
||||
js_out = null;
|
||||
output = null;
|
||||
code = null;
|
||||
}
|
||||
}
|
||||
catch(Exception e) {
|
||||
this.failPicture("Error compressing image.");
|
||||
}
|
||||
jpeg_data = null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Send error message to JavaScript.
|
||||
*
|
||||
* @param err
|
||||
*/
|
||||
public void failPicture(String err) {
|
||||
this.error(new PluginResult(PluginResult.Status.ERROR, err), this.callbackId);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user