http://Hybridego.net/ <Ho Cheol Jeon> :: libjnigraphics.so 원 소스 orignal source

libjnigraphics.so 원 소스 orignal source

Android/NDK : 2011/12/13 12:24

frameworks/base/native/graphics/jni/bitmap.cpp

#include <android/bitmap.h>
#include <GraphicsJNI.h>

int AndroidBitmap_getInfo(JNIEnv* env, jobject jbitmap,
                          AndroidBitmapInfo* info) {
    if (NULL == env || NULL == jbitmap) {
        return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
    }

SkBitmap* bm = GraphicsJNI::getNativeBitmap(env, jbitmap);
    if (NULL == bm) {
        return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
    }

if (info) {
        info->width     = bm->width();
        info->height    = bm->height();
        info->stride    = bm->rowBytes();
        info->flags     = 0;

switch (bm->config()) {
            case SkBitmap::kARGB_8888_Config:
                info->format = ANDROID_BITMAP_FORMAT_RGBA_8888;
                break;
            case SkBitmap::kRGB_565_Config:
                info->format = ANDROID_BITMAP_FORMAT_RGB_565;
                break;
            case SkBitmap::kARGB_4444_Config:
                info->format = ANDROID_BITMAP_FORMAT_RGBA_4444;
                break;
            case SkBitmap::kA8_Config:
                info->format = ANDROID_BITMAP_FORMAT_A_8;
                break;
            default:
                info->format = ANDROID_BITMAP_FORMAT_NONE;
                break;
        }
    }
    return ANDROID_BITMAP_RESUT_SUCCESS;
}
int AndroidBitmap_lockPixels(JNIEnv* env, jobject jbitmap, void** addrPtr) {
    if (NULL == env || NULL == jbitmap) {
        return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
    }

SkBitmap* bm = GraphicsJNI::getNativeBitmap(env, jbitmap);
    if (NULL == bm) {
        return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
    }

bm->lockPixels();
    void* addr = bm->getPixels();
    if (NULL == addr) {
        bm->unlockPixels();
        return ANDROID_BITMAP_RESULT_ALLOCATION_FAILED;
    }

if (addrPtr) {
        *addrPtr = addr;
    }
    return ANDROID_BITMAP_RESUT_SUCCESS;
}

int AndroidBitmap_unlockPixels(JNIEnv* env, jobject jbitmap) {
    if (NULL == env || NULL == jbitmap) {
        return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
    }

SkBitmap* bm = GraphicsJNI::getNativeBitmap(env, jbitmap);
    if (NULL == bm) {
        return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
    }

bm->unlockPixels();
    return ANDROID_BITMAP_RESUT_SUCCESS;
}