Downloaded image files are corrupted

[rahmatnazali]

Hi! :)

So I have a YI 4k Action Camera. Using YI open API, I'm trying to make Android apps that control the camera, capture a photo, and download the captured photo to an external storage on my device.

All were working well, until I try to download the image captured using ActionCamera.downloadFile("YDXJXXXX.JPG"). Here's the detail:

• The download finished successfully, as the callback shows that DownloadTask.downloadBytes == DownloadTask.totalBytes
• BUT, when I try to open the downloaded image via file manager, it says that my image are corrupted. This means no thumbnails and shows nothing when I open it
• After some observation, I find something strange. The original image captured (inside YI 4k Camera) was sized around 4MB, while downloaded image (inside external storage of my android device) was around 11MB!

Did I make a mistakes here? Please let me know.

Thanks in advance.

P.S. These are the codes to call the downloadFile() function, though I'm not sure if this will helps:

public void downloadAFile(String fileName){
        String filePath = Constant.externalStoragePath;
        filePath = filePath + fileName;

        this.downloadFile(fileName, filePath, new ActionCameraCommandCallback1<DownloadTask>() {
            @Override
            public void onInvoke(DownloadTask downloadTask) {
                onCameraSucceedDownloadFile(downloadTask);
            }
        }, new ActionCameraCommandCallback1<YICameraSDKError>() {
            @Override
            public void onInvoke(YICameraSDKError yiCameraSDKError) {
                onCameraFailedDownloadFile(yiCameraSDKError);
            }
        });
    }

public void onCameraSucceedDownloadFile(DownloadTask downloadTask){
        Log.i(TAG, " (downloadTask.downloadedBytes/(float)downloadTask.totalBytes*100) +"% downloading image to " + downloadTask.destFilePath);

        // and tell me when download finished
        if(downloadTask.downloadedBytes == downloadTask.totalBytes){
            Log.i(TAG, "download finished " + downloadTask.destFilePath + "at " + (downloadTask.downloadedBytes/(float)downloadTask.totalBytes * 100 + "%");
        }
    }

[knkpxt]

Hi rahmatnazali! I also have same problems. I successfully downloaded file through my app but got corrupted file. If you open file in binary mode you will see that data is scattered - there are empty spaces between data stream. Hope this issue will be handled fast

[rahmatnazali]

To @knkpxt and other people having the same issue, I found the workaround! :) This is not an elegant way, but at least this works.

Before moving further, you guys would need to find the address of the camera's IP, which is mCameraIP variable inside the API. In my case, I made a brand new custom API just to print/log the mCameraIP, and found that (ofcourse) the IP address is 192.168.42.1, just like the IP we used to connect to the camera. I tested it for like 20 times and the camera IP address did not change, so I assume that it was a static address.

So after knowing where to download the files, I just use Glide to download the image via android, using the code from here, or like so:

Bitmap theBitmap = Glide.
        with(getBaseContext()).
        load("http://192.168.42.1/DCIM/100MEDIA/YDXJXXXX.JPG").
        asBitmap().
        into(100, 100). // Width and height, fill it with (Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL) for the original size
        get();

you can then able to modify the image or even save it to external storage.

This solution makes me able to continue the project.

I hope this helps :)

[Water-bamboo]

Hi all, @knkpxt @rahmatnazali This issue was just fixed.

[rahmatnazali]

Hi @Water-bamboo , thanks for answering my issue :)

Super glad to hear you guys are on it. If you guys need another informations from me to provide regarding this issue, please let me know :)

-- Edit: Thanks a million for this fix! :)

[Water-bamboo]

Please pull new code from master branch.

[rahmatnazali]

@Water-bamboo Thanks! I already downloaded the newest JAR from master branch, if that is what you mean.