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2014/10/16 ¤W¤È 08:10:36
android Programming Glossary: bitmapinfo.widthHow to cache bitmaps into native memory http://stackoverflow.com/questions/17900732/how-to-cache-bitmaps-into-native-memory jniBitmap _bitmapInfo.height jniBitmap _bitmapInfo.width bitmapConfig putting the pixels into the new bitmap int ret.. int pixelsCount jniBitmap _bitmapInfo.height jniBitmap _bitmapInfo.width memcpy newBitmapPixels jniBitmap _storedBitmapPixels sizeof.. error d ret return NULL LOGD width d height d stride d bitmapInfo.width bitmapInfo.height bitmapInfo.stride if bitmapInfo.format ANDROID_BITMAP_FORMAT_RGBA_8888..
JNI bitmap operations , for helping to avoid OOM when using large images [closed] http://stackoverflow.com/questions/18250951/jni-bitmap-operations-for-helping-to-avoid-oom-when-using-large-images jniBitmap _storedBitmapPixels uint32_t oldWidth jniBitmap _bitmapInfo.width uint32_t newWidth right left newHeight bottom top uint32_t newBitmapPixels.. jniBitmap _storedBitmapPixels newBitmapPixels jniBitmap _bitmapInfo.width newWidth jniBitmap _bitmapInfo.height newHeight rotates the.. uint32_t newBitmapPixels new uint32_t bitmapInfo.height bitmapInfo.width int whereToPut 0 A.D D.C ... ... B.C A.B for int x bitmapInfo.width..
How to cache bitmaps into native memory http://stackoverflow.com/questions/17900732/how-to-cache-bitmaps-into-native-memory jobject newBitmap env CallStaticObjectMethod bitmapCls createBitmapFunction jniBitmap _bitmapInfo.height jniBitmap _bitmapInfo.width bitmapConfig putting the pixels into the new bitmap int ret void bitmapPixels if ret AndroidBitmap_lockPixels env newBitmap.. ret return NULL uint32_t newBitmapPixels uint32_t bitmapPixels int pixelsCount jniBitmap _bitmapInfo.height jniBitmap _bitmapInfo.width memcpy newBitmapPixels jniBitmap _storedBitmapPixels sizeof uint32_t pixelsCount AndroidBitmap_unlockPixels env newBitmap.. env bitmap bitmapInfo 0 LOGE AndroidBitmap_getInfo failed error d ret return NULL LOGD width d height d stride d bitmapInfo.width bitmapInfo.height bitmapInfo.stride if bitmapInfo.format ANDROID_BITMAP_FORMAT_RGBA_8888 LOGE Bitmap format is not RGBA_8888..
JNI bitmap operations , for helping to avoid OOM when using large images [closed] http://stackoverflow.com/questions/18250951/jni-bitmap-operations-for-helping-to-avoid-oom-when-using-large-images _storedBitmapPixels NULL return uint32_t previousData jniBitmap _storedBitmapPixels uint32_t oldWidth jniBitmap _bitmapInfo.width uint32_t newWidth right left newHeight bottom top uint32_t newBitmapPixels new uint32_t newWidth newHeight uint32_t whereToGet.. copying so replace old data with new one delete previousData jniBitmap _storedBitmapPixels newBitmapPixels jniBitmap _bitmapInfo.width newWidth jniBitmap _bitmapInfo.height newHeight rotates the inner bitmap data by 90 degress counter clock wise JNIEXPORT.. AndroidBitmapInfo bitmapInfo jniBitmap _bitmapInfo uint32_t newBitmapPixels new uint32_t bitmapInfo.height bitmapInfo.width int whereToPut 0 A.D D.C ... ... B.C A.B for int x bitmapInfo.width 1 x 0 x for int y 0 y bitmapInfo.height y uint32_t..
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