mirror of
https://github.com/status-im/react-native-camera.git
synced 2025-02-24 09:48:17 +00:00
Add ability to control size by only specifying width + made orientation optionnal. see #768
This commit is contained in:
Michaël Villeneuve
parent
e064bab7db
commit
983337d9f8
@ -24,18 +24,18 @@ import java.io.FileOutputStream;
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import java.io.IOException;
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public class ResolveTakenPictureAsyncTask extends AsyncTask<Void, Void, WritableMap> {
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private static final String ERROR_TAG = "E_TAKING_PICTURE_FAILED";
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private Promise mPromise;
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private byte[] mImageData;
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private ReadableMap mOptions;
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private File mCacheDirectory;
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private Bitmap mBitmap;
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private static final String ERROR_TAG = "E_TAKING_PICTURE_FAILED";
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private Promise mPromise;
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private byte[] mImageData;
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private ReadableMap mOptions;
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private File mCacheDirectory;
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private Bitmap mBitmap;
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public ResolveTakenPictureAsyncTask(byte[] imageData, Promise promise, ReadableMap options) {
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mPromise = promise;
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mOptions = options;
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mImageData = imageData;
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}
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public ResolveTakenPictureAsyncTask(byte[] imageData, Promise promise, ReadableMap options) {
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mPromise = promise;
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mOptions = options;
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mImageData = imageData;
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}
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public ResolveTakenPictureAsyncTask(byte[] imageData, Promise promise, ReadableMap options, File cacheDirectory) {
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mPromise = promise;
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@ -44,95 +44,97 @@ public class ResolveTakenPictureAsyncTask extends AsyncTask<Void, Void, Writable
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mCacheDirectory = cacheDirectory;
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}
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private int getQuality() {
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return (int) (mOptions.getDouble("quality") * 100);
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}
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private int getQuality() {
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return (int) (mOptions.getDouble("quality") * 100);
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}
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@Override
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protected WritableMap doInBackground(Void... voids) {
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WritableMap response = Arguments.createMap();
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ByteArrayInputStream inputStream = null;
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@Override
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protected WritableMap doInBackground(Void... voids) {
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WritableMap response = Arguments.createMap();
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ByteArrayInputStream inputStream = null;
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// we need the stream only for photos from a device
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if (mBitmap == null) {
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mBitmap = BitmapFactory.decodeByteArray(mImageData, 0, mImageData.length);
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inputStream = new ByteArrayInputStream(mImageData);
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}
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// we need the stream only for photos from a device
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if (mBitmap == null) {
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mBitmap = BitmapFactory.decodeByteArray(mImageData, 0, mImageData.length);
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inputStream = new ByteArrayInputStream(mImageData);
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}
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try {
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if (inputStream != null) {
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if (mOptions.hasKey("width") && mOptions.hasKey("height")) {
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mBitmap = resizeBitmap(mBitmap, mOptions.getInteger("width"), mOptions.getInteger("height"));
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}
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ExifInterface exifInterface = new ExifInterface(inputStream);
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// Get orientation of the image from mImageData via inputStream
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int orientation = exifInterface.getAttributeInt(
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ExifInterface.TAG_ORIENTATION,
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ExifInterface.ORIENTATION_UNDEFINED
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);
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try {
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if (inputStream != null) {
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ExifInterface exifInterface = new ExifInterface(inputStream);
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// Rotate the bitmap to the proper orientation if needed
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if (orientation != ExifInterface.ORIENTATION_UNDEFINED) {
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mBitmap = rotateBitmap(mBitmap, getImageRotation(orientation));
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}
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// Get orientation of the image from mImageData via inputStream
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int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,
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ExifInterface.ORIENTATION_UNDEFINED);
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if (mOptions.hasKey("mirrorImage") && mOptions.getBoolean("mirrorImage")) {
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mBitmap = flipHorizontally(mBitmap);
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}
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if (mOptions.hasKey("width")) {
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mBitmap = resizeBitmap(mBitmap, mOptions.getInt("width"));
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}
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// Write Exif data to the response if requested
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if (mOptions.hasKey("exif") && mOptions.getBoolean("exif")) {
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WritableMap exifData = RNCameraViewHelper.getExifData(exifInterface);
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response.putMap("exif", exifData);
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}
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}
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// Rotate the bitmap to the proper orientation if needed and asked
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if (mOptions.hasKey("fixOrientation") && mOptions.getBoolean("fixOrientation")
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&& orientation != ExifInterface.ORIENTATION_UNDEFINED) {
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mBitmap = rotateBitmap(mBitmap, getImageRotation(orientation));
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}
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// Upon rotating, write the image's dimensions to the response
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response.putInt("width", mBitmap.getWidth());
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response.putInt("height", mBitmap.getHeight());
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if (mOptions.hasKey("mirrorImage") && mOptions.getBoolean("mirrorImage")) {
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mBitmap = flipHorizontally(mBitmap);
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}
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// Cache compressed image in imageStream
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ByteArrayOutputStream imageStream = new ByteArrayOutputStream();
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mBitmap.compress(Bitmap.CompressFormat.JPEG, getQuality(), imageStream);
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// Write Exif data to the response if requested
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if (mOptions.hasKey("exif") && mOptions.getBoolean("exif")) {
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WritableMap exifData = RNCameraViewHelper.getExifData(exifInterface);
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response.putMap("exif", exifData);
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}
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// Write compressed image to file in cache directory
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String filePath = writeStreamToFile(imageStream);
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File imageFile = new File(filePath);
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String fileUri = Uri.fromFile(imageFile).toString();
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response.putString("uri", fileUri);
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}
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// Write base64-encoded image to the response if requested
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if (mOptions.hasKey("base64") && mOptions.getBoolean("base64")) {
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response.putString("base64", Base64.encodeToString(imageStream.toByteArray(), Base64.DEFAULT));
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}
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// Upon rotating, write the image's dimensions to the response
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response.putInt("width", mBitmap.getWidth());
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response.putInt("height", mBitmap.getHeight());
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// Cleanup
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imageStream.close();
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if (inputStream != null) {
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inputStream.close();
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inputStream = null;
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}
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// Cache compressed image in imageStream
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ByteArrayOutputStream imageStream = new ByteArrayOutputStream();
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mBitmap.compress(Bitmap.CompressFormat.JPEG, getQuality(), imageStream);
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return response;
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} catch (Resources.NotFoundException e) {
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mPromise.reject(ERROR_TAG, "Documents directory of the app could not be found.", e);
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e.printStackTrace();
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} catch (IOException e) {
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mPromise.reject(ERROR_TAG, "An unknown I/O exception has occurred.", e);
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e.printStackTrace();
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} finally {
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try {
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if (inputStream != null) {
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inputStream.close();
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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// Write compressed image to file in cache directory
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String filePath = writeStreamToFile(imageStream);
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File imageFile = new File(filePath);
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String fileUri = Uri.fromFile(imageFile).toString();
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response.putString("uri", fileUri);
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// An exception had to occur, promise has already been rejected. Do not try to resolve it again.
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return null;
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}
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// Write base64-encoded image to the response if requested
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if (mOptions.hasKey("base64") && mOptions.getBoolean("base64")) {
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response.putString("base64", Base64.encodeToString(imageStream.toByteArray(), Base64.DEFAULT));
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}
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// Cleanup
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imageStream.close();
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if (inputStream != null) {
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inputStream.close();
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inputStream = null;
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}
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return response;
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} catch (Resources.NotFoundException e) {
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mPromise.reject(ERROR_TAG, "Documents directory of the app could not be found.", e);
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e.printStackTrace();
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} catch (IOException e) {
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mPromise.reject(ERROR_TAG, "An unknown I/O exception has occurred.", e);
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e.printStackTrace();
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} finally {
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try {
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if (inputStream != null) {
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inputStream.close();
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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// An exception had to occur, promise has already been rejected. Do not try to resolve it again.
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return null;
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}
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private Bitmap rotateBitmap(Bitmap source, int angle) {
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Matrix matrix = new Matrix();
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@ -140,18 +142,12 @@ public class ResolveTakenPictureAsyncTask extends AsyncTask<Void, Void, Writable
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return Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true);
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}
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public Bitmap resizeBitmap(Bitmap bm, int newWidth, int newHeight) {
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private Bitmap resizeBitmap(Bitmap bm, int newWidth) {
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int width = bm.getWidth();
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int height = bm.getHeight();
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float scaleWidth = ((float) newWidth) / width;
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float scaleHeight = ((float) newHeight) / height;
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float scaleRatio = (float) newWidth / (float) width;
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Matrix matrix = new Matrix();
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matrix.postScale(scaleWidth, scaleHeight);
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Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false);
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bm.recycle();
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return resizedBitmap;
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return Bitmap.createScaledBitmap(bm, newWidth, (int) (height * scaleRatio), true);
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}
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private Bitmap flipHorizontally(Bitmap source) {
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@ -165,56 +161,56 @@ public class ResolveTakenPictureAsyncTask extends AsyncTask<Void, Void, Writable
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private int getImageRotation(int orientation) {
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int rotationDegrees = 0;
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switch (orientation) {
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case ExifInterface.ORIENTATION_ROTATE_90:
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rotationDegrees = 90;
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break;
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case ExifInterface.ORIENTATION_ROTATE_180:
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rotationDegrees = 180;
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break;
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case ExifInterface.ORIENTATION_ROTATE_270:
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rotationDegrees = 270;
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break;
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case ExifInterface.ORIENTATION_ROTATE_90:
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rotationDegrees = 90;
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break;
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case ExifInterface.ORIENTATION_ROTATE_180:
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rotationDegrees = 180;
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break;
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case ExifInterface.ORIENTATION_ROTATE_270:
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rotationDegrees = 270;
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break;
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}
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return rotationDegrees;
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}
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private String writeStreamToFile(ByteArrayOutputStream inputStream) throws IOException {
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String outputPath = null;
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IOException exception = null;
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FileOutputStream outputStream = null;
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private String writeStreamToFile(ByteArrayOutputStream inputStream) throws IOException {
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String outputPath = null;
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IOException exception = null;
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FileOutputStream outputStream = null;
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try {
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outputPath = RNFileUtils.getOutputFilePath(mCacheDirectory, ".jpg");
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outputStream = new FileOutputStream(outputPath);
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inputStream.writeTo(outputStream);
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} catch (IOException e) {
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e.printStackTrace();
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exception = e;
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} finally {
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try {
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if (outputStream != null) {
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outputStream.close();
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}
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outputPath = RNFileUtils.getOutputFilePath(mCacheDirectory, ".jpg");
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outputStream = new FileOutputStream(outputPath);
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inputStream.writeTo(outputStream);
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} catch (IOException e) {
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e.printStackTrace();
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exception = e;
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} finally {
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try {
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if (outputStream != null) {
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outputStream.close();
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}
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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if (exception != null) {
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throw exception;
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}
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return outputPath;
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}
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@Override
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protected void onPostExecute(WritableMap response) {
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super.onPostExecute(response);
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// If the response is not null everything went well and we can resolve the promise.
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if (response != null) {
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mPromise.resolve(response);
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}
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}
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if (exception != null) {
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throw exception;
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}
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return outputPath;
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}
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@Override
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protected void onPostExecute(WritableMap response) {
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super.onPostExecute(response);
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// If the response is not null everything went well and we can resolve the promise.
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if (response != null) {
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mPromise.resolve(response);
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}
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}
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}
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