Get number of concurrent MediaCodec instances

SupportedMediaCodecInstances.java

/*
*
* This will return the number of `MediaCodec` instances a device can run 
* at the same time with the given dimensions and mime type.
* 
* This will only work on API 21>
*
* It keeps creating instances until Error 0xffffec77 is called 
* It then returns the number of instances that was successfully created
*
* It can be called like this:
* Toast.makeText(this, String.valueOf(getMaxCodecInstances()), Toast.LENGTH_LONG).show();
* 
*/

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public static int getMaxCodecInstances() {
    final MediaFormat format = MediaFormat.createVideoFormat("video/avc", 1920, 1080);
    MediaCodec codec = null;

    // Number of concurrent instances supported by the device with the given dimensions and mime type
    int supportedInstances = 0;

    // The number of instances it will try to create
    int createAmount = 30;

    // The loop will continue until it fails, then return the number of instances it
    // was able to create minus the the last attempt which failed

    for (int i = 0; i < createAmount; i++) {
        try {
            supportedInstances++;
            codec = MediaCodec.createDecoderByType(MediaFormat.MIMETYPE_VIDEO_AVC);
            codec.configure(format, null, null, 0);
            codec.start();
            codec = null;
        }
       catch (Exception e) {
            if (Objects.equals(e.getMessage(), "Error 0xffffec77")){
                return supportedInstances-1;
            }
            return supportedInstances;
        }
        finally {
            if (codec != null) {
                codec.release();
                codec = null;
            }
        }
    }

    return supportedInstances;
}