[android-developers] Re: parceling bitmaps pre and post honeycomb

As Parcels can be used in IPC calls it would have to as the image memory would not be accessible to the other process.

On Wednesday, September 26, 2012 7:30:40 PM UTC+1, Jay Howard wrote:

Hmm.  Good point.

Some info I found online (forget where) suggested that Bitmap instances are fairly small since the pixel is stored externally on the native heap and the Bitmap instance only contains a reference to this externally allocated storage.

I thought this would imply that, during parceling, only the reference to this external storage would be parceled rather than its entire contents.

Some other info I found talked about how, with Honeycomb, this pixel storage was allocated on the VM heap rather than in native-land.  My question was trying to get at whether this change would affect how Bitmaps are parceled.

Does parceling a Bitmap *really* involve string-ifying the entire contents of its pixel data?

On Wednesday, September 26, 2012 10:57:08 AM UTC-5, RichardC wrote:

Not sure where you are getting your info from can you post a reference please?

Bitmap.writeToParcel

http://developer.android.com/reference/android/graphics/Bitmap.html#writeToParcel(android.os.Parcel, int)

Has no change notes against it and says it writes the pixels (from API level 1)

On Wednesday, September 26, 2012 4:22:04 PM UTC+1, Jay Howard wrote:

With the changes to how bitmap data is stored that came in with Honeycomb affect the efficiency of parceling bitmap objects?

I'm assuming the actual bitmap data wasn't ever parceled pre-Honeycomb.  Is that accurate?  If so, then my question is basically whether this behavior (not parceling the bitmap data) was carried forward into Honeycomb when the behind-the-scenes memory changes were made.

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