DO NOT DO THIS. This marshalling format is private to the system and class,
and can change arbitrarily across releases.
On Mon, Dec 1, 2008 at 2:58 PM, Koush <[EMAIL PROTECTED]> wrote:
>
> I inspected Bitmap.cpp and found this function:
>
> static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject,
> const SkBitmap* bitmap,
> jboolean isMutable, jobject
> parcel) {
> if (parcel == NULL) {
> SkDebugf("------- writeToParcel null parcel\n");
> return false;
> }
>
> android::Parcel* p = android::parcelForJavaObject(env, parcel);
>
> p->writeInt32(isMutable);
> p->writeInt32(bitmap->config());
> p->writeInt32(bitmap->width());
> p->writeInt32(bitmap->height());
> p->writeInt32(bitmap->rowBytes());
>
> if (bitmap->getConfig() == SkBitmap::kIndex8_Config) {
> SkColorTable* ctable = bitmap->getColorTable();
> if (ctable != NULL) {
> int count = ctable->count();
> p->writeInt32(count);
> memcpy(p->writeInplace(count * sizeof(SkPMColor)),
> ctable->lockColors(), count * sizeof(SkPMColor));
> ctable->unlockColors(false);
> } else {
> p->writeInt32(0); // indicate no ctable
> }
> }
>
> size_t size = bitmap->getSize();
> bitmap->lockPixels();
> memcpy(p->writeInplace(size), bitmap->getPixels(), size);
> bitmap->unlockPixels();
> return true;
> }
>
> I can manually marshal a Bitmap parcel in the proper format, and then
> append the custom byte buffer, and then use createFromParcel to create
> a bitmap. That gets me indirect access to creating a bitmap directly
> from a byte buffer. It's a bit of a hack obviously, and not ideal. Is
> there a better way to do this?
>
> On Dec 1, 2:41 pm, Koush <[EMAIL PROTECTED]> wrote:
> > I'm trying to populate a create a bitmap from something other than an
> > RGBA int array.
> > However, the Bitmap creation overloads only take int arrays as inputs.
> >
> > In particular, I have a byte buffer that is in the R5G6B5 format that
> > I want to load directly into a bitmap. The format is supposedly
> > supported internally, but I can't figure out how to create the bitmap
> > without doing the R5G6B5 to A8R8G8B8 conversion first.
> >
>
--
Dianne Hackborn
Android framework engineer
[EMAIL PROTECTED]
Note: please don't send private questions to me, as I don't have time to
provide private support. All such questions should be posted on public
forums, where I and others can see and answer them.
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