How do you transform a Bitmap into an InputStream?
I would like to use this InputStream as input to the ETC1Util.loadTexture() function.
Add a comment
|
2 Answers
This might work
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(CompressFormat.PNG, 0 /*ignored for PNG*/, bos);
byte[] bitmapdata = bos.toByteArray();
ByteArrayInputStream bs = new ByteArrayInputStream(bitmapdata);
5 Comments
Malachiasz
It's not an ideal solution, because it causes bitmap bytes to be 2 times in memory: in bitmapdata and in bos. So it's a waste of memory.
blessanm86
@Malachiasz If u know a better way, add it as an answer and mention it as comment to my answer. Future people will notice it.
Joao Sardinha
Why do you need to
compress it? You compress it to a PNG but what if the image is a gif? Would it apply PNG-compression which could increase the size? What does that actually do?blessanm86
@JohnSardinha I haven't written java or developed for android for over 5 years. You might wanna ask this as another question.
This is my way:
// Your Bitmap.
Bitmap bitmap = XXX;
int byteSize = bitmap.getRowBytes() * bitmap.getHeight();
ByteBuffer byteBuffer = ByteBuffer.allocate(byteSize);
bitmap.copyPixelsToBuffer(byteBuffer);
// Get the byteArray.
byte[] byteArray = byteBuffer.array();
// Get the ByteArrayInputStream.
ByteArrayInputStream bs = new ByteArrayInputStream(byteArray);
