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[mob][photos] add option to pass decoded image to face thumbnail generation methods to avoid unnecessary decoding when possible

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This commit is contained in:
ashilkn 2024-04-26 15:44:07 +05:30
parent a0e9913f43
commit caa72ba830
1 changed files with 27 additions and 30 deletions
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57
mobile/lib/utils/face/face_util.dart
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@ -12,28 +12,14 @@ final _computer = Computer.shared();
///Convert img.Image to ui.Image and use RawImage to display.
Future<List<img.Image>> generateImgFaceThumbnails(
String imagePath,
List<FaceBox> faceBoxes,
) async {
List<FaceBox> faceBoxes, {
///Pass decodedImage decoded by [decodeToImgImage] to avoid decoding image
///multiple times if all faces are from the same image (eg: File info).
img.Image? decodedImage,
}) async {
final faceThumbnails = <img.Image>[];
img.Image? image =
await _computer.compute(_decodeImageFile, param: {"filePath": imagePath});
if (image == null) {
_logger.info(
"Failed to decode image. Compressing to jpg and decoding",
);
final compressedJPGImage =
await FlutterImageCompress.compressWithFile(imagePath);
image = await _computer.compute(
_decodeJpg,
param: {"image": compressedJPGImage},
);
if (image == null) {
throw Exception("Failed to decode image");
}
}
final image = decodedImage ?? await decodeToImgImage(imagePath);
for (FaceBox faceBox in faceBoxes) {
final croppedImage = cropFaceBoxFromImage(image, faceBox);
@ -45,8 +31,23 @@ Future<List<img.Image>> generateImgFaceThumbnails(
Future<List<Uint8List>> generateJpgFaceThumbnails(
String imagePath,
List<FaceBox> faceBoxes,
) async {
List<FaceBox> faceBoxes, {
///Pass decodedImage decoded by [decodeToImgImage] to avoid decoding image
///multiple times if all faces are from the same image (eg: File info).
img.Image? decodedImage,
}) async {
final image = decodedImage ?? await decodeToImgImage(imagePath);
final croppedImages = <img.Image>[];
for (FaceBox faceBox in faceBoxes) {
final croppedImage = cropFaceBoxFromImage(image, faceBox);
croppedImages.add(croppedImage);
}
return await _computer
.compute(_encodeImagesToJpg, param: {"images": croppedImages});
}
Future<img.Image> decodeToImgImage(String imagePath) async {
img.Image? image =
await _computer.compute(_decodeImageFile, param: {"filePath": imagePath});
@ -63,16 +64,12 @@ Future<List<Uint8List>> generateJpgFaceThumbnails(
if (image == null) {
throw Exception("Failed to decode image");
} else {
return image;
}
} else {
return image;
}
final croppedImages = <img.Image>[];
for (FaceBox faceBox in faceBoxes) {
final croppedImage = cropFaceBoxFromImage(image, faceBox);
croppedImages.add(croppedImage);
}
return await _computer
.compute(_encodeImagesToJpg, param: {"images": croppedImages});
}
/// Returns an Image from 'package:image/image.dart'