getSize static method
Implementation
static Future<Size> getSize(AsyncImageInput input) async {
if (!await input.exists()) {
throw Exception('The input is not exists.');
}
if (!(await input.supportRangeLoad())) {
final delegateInput = await input.delegateInput();
try {
return ImageSizeGetter.getSize(delegateInput);
} finally {
delegateInput.release();
}
}
if (await isJpg(input)) {
return ad.JpegDecoder(input).size;
}
if (await isPng(input)) {
return ad.PngDecoder(input).size;
}
if (await isWebp(input)) {
return ad.WebpDecoder(input).size;
}
if (await isGif(input)) {
return ad.GifDecoder(input).size;
}
throw Exception('The input is not supported.');
}