/frameworks/base/core/jni/android/graphics/Bitmap.cpp

#include "SkBitmap.h"

#include "SkPixelRef.h"

#include "SkImageEncoder.h"

#include "SkColorPriv.h"

#include "GraphicsJNI.h"

#include "SkDither.h"

#include "SkUnPreMultiply.h"



#include <binder/Parcel.h>

#include "android_os_Parcel.h"

#include "android_util_Binder.h"

#include "android_nio_utils.h"

#include "CreateJavaOutputStreamAdaptor.h"



#include <jni.h>



#include <Caches.h>



#if 0

    #define TRACE_BITMAP(code)  code

#else

    #define TRACE_BITMAP(code)

#endif



///////////////////////////////////////////////////////////////////////////////

// Conversions to/from SkColor, for get/setPixels, and the create method, which

// is basically like setPixels



typedef void (*FromColorProc)(void* dst, const SkColor src[], int width,

                              int x, int y);



static void FromColor_D32(void* dst, const SkColor src[], int width,

                          int, int) {

    SkPMColor* d = (SkPMColor*)dst;



    for (int i = 0; i < width; i++) {

        *d++ = SkPreMultiplyColor(*src++);

    }

}



static void FromColor_D565(void* dst, const SkColor src[], int width,

                           int x, int y) {

    uint16_t* d = (uint16_t*)dst;



    DITHER_565_SCAN(y);

    for (int stop = x + width; x < stop; x++) {

        SkColor c = *src++;

        *d++ = SkDitherRGBTo565(SkColorGetR(c), SkColorGetG(c), SkColorGetB(c),

                                DITHER_VALUE(x));

    }

}



static void FromColor_D4444(void* dst, const SkColor src[], int width,

                            int x, int y) {

    SkPMColor16* d = (SkPMColor16*)dst;



    DITHER_4444_SCAN(y);

    for (int stop = x + width; x < stop; x++) {

        SkPMColor c = SkPreMultiplyColor(*src++);

        *d++ = SkDitherARGB32To4444(c, DITHER_VALUE(x));

//        *d++ = SkPixel32ToPixel4444(c);

    }

}



// can return NULL

static FromColorProc ChooseFromColorProc(SkBitmap::Config config) {

    switch (config) {

        case SkBitmap::kARGB_8888_Config:

            return FromColor_D32;

        case SkBitmap::kARGB_4444_Config:

            return FromColor_D4444;

        case SkBitmap::kRGB_565_Config:

            return FromColor_D565;

        default:

            break;

    }

    return NULL;

}



bool GraphicsJNI::SetPixels(JNIEnv* env, jintArray srcColors,

                            int srcOffset, int srcStride,

                            int x, int y, int width, int height,

                            const SkBitmap& dstBitmap) {

    SkAutoLockPixels alp(dstBitmap);

    void* dst = dstBitmap.getPixels();

    FromColorProc proc = ChooseFromColorProc(dstBitmap.config());



    if (NULL == dst || NULL == proc) {

        return false;

    }



    const jint* array = env->GetIntArrayElements(srcColors, NULL);

    const SkColor* src = (const SkColor*)array + srcOffset;



    // reset to to actual choice from caller

    dst = dstBitmap.getAddr(x, y);

    // now copy/convert each scanline

    for (int y = 0; y < height; y++) {

        proc(dst, src, width, x, y);

        src += srcStride;

        dst = (char*)dst + dstBitmap.rowBytes();

    }



    dstBitmap.notifyPixelsChanged();



    env->ReleaseIntArrayElements(srcColors, const_cast<jint*>(array),

                                 JNI_ABORT);

    return true;

}



//////////////////// ToColor procs



typedef void (*ToColorProc)(SkColor dst[], const void* src, int width,

                            SkColorTable*);



static void ToColor_S32_Alpha(SkColor dst[], const void* src, int width,

                              SkColorTable*) {

    SkASSERT(width > 0);

    const SkPMColor* s = (const SkPMColor*)src;

    do {

        *dst++ = SkUnPreMultiply::PMColorToColor(*s++);

    } while (--width != 0);

}



static void ToColor_S32_Opaque(SkColor dst[], const void* src, int width,

                               SkColorTable*) {

    SkASSERT(width > 0);

    const SkPMColor* s = (const SkPMColor*)src;

    do {

        SkPMColor c = *s++;

        *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),

                               SkGetPackedB32(c));

    } while (--width != 0);

}



static void ToColor_S4444_Alpha(SkColor dst[], const void* src, int width,

                                SkColorTable*) {

    SkASSERT(width > 0);

    const SkPMColor16* s = (const SkPMColor16*)src;

    do {

        *dst++ = SkUnPreMultiply::PMColorToColor(SkPixel4444ToPixel32(*s++));

    } while (--width != 0);

}



static void ToColor_S4444_Opaque(SkColor dst[], const void* src, int width,

                                 SkColorTable*) {

    SkASSERT(width > 0);

    const SkPMColor16* s = (const SkPMColor16*)src;

    do {

        SkPMColor c = SkPixel4444ToPixel32(*s++);

        *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),

                               SkGetPackedB32(c));

    } while (--width != 0);

}



static void ToColor_S565(SkColor dst[], const void* src, int width,

                         SkColorTable*) {

    SkASSERT(width > 0);

    const uint16_t* s = (const uint16_t*)src;

    do {

        uint16_t c = *s++;

        *dst++ =  SkColorSetRGB(SkPacked16ToR32(c), SkPacked16ToG32(c),

                                SkPacked16ToB32(c));

    } while (--width != 0);

}



static void ToColor_SI8_Alpha(SkColor dst[], const void* src, int width,

                              SkColorTable* ctable) {

    SkASSERT(width > 0);

    const uint8_t* s = (const uint8_t*)src;

    const SkPMColor* colors = ctable->lockColors();

    do {

        *dst++ = SkUnPreMultiply::PMColorToColor(colors[*s++]);

    } while (--width != 0);

    ctable->unlockColors(false);

}



static void ToColor_SI8_Opaque(SkColor dst[], const void* src, int width,

                               SkColorTable* ctable) {

    SkASSERT(width > 0);

    const uint8_t* s = (const uint8_t*)src;

    const SkPMColor* colors = ctable->lockColors();

    do {

        SkPMColor c = colors[*s++];

        *dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),

                               SkGetPackedB32(c));

    } while (--width != 0);

    ctable->unlockColors(false);

}



// can return NULL

static ToColorProc ChooseToColorProc(const SkBitmap& src) {

    switch (src.config()) {

        case SkBitmap::kARGB_8888_Config:

            return src.isOpaque() ? ToColor_S32_Opaque : ToColor_S32_Alpha;

        case SkBitmap::kARGB_4444_Config:

            return src.isOpaque() ? ToColor_S4444_Opaque : ToColor_S4444_Alpha;

        case SkBitmap::kRGB_565_Config:

            return ToColor_S565;

        case SkBitmap::kIndex8_Config:

            if (src.getColorTable() == NULL) {

                return NULL;

            }

            return src.isOpaque() ? ToColor_SI8_Opaque : ToColor_SI8_Alpha;

        default:

            break;

    }

    return NULL;

}



///////////////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////////////



static jobject Bitmap_creator(JNIEnv* env, jobject, jintArray jColors,

                              int offset, int stride, int width, int height,

                              SkBitmap::Config config, jboolean isMutable) {

    if (NULL != jColors) {

        size_t n = env->GetArrayLength(jColors);

        if (n < SkAbs32(stride) * (size_t)height) {

            doThrowAIOOBE(env);

            return NULL;

        }

    }



    SkBitmap bitmap;



    bitmap.setConfig(config, width, height);



    jbyteArray buff = GraphicsJNI::allocateJavaPixelRef(env, &bitmap, NULL);

    if (NULL == buff) {

        return NULL;

    }



    if (jColors != NULL) {

        GraphicsJNI::SetPixels(env, jColors, offset, stride,

                               0, 0, width, height, bitmap);

    }



    return GraphicsJNI::createBitmap(env, new SkBitmap(bitmap), buff, isMutable, NULL, NULL);

}



static jobject Bitmap_copy(JNIEnv* env, jobject, const SkBitmap* src,

                           SkBitmap::Config dstConfig, jboolean isMutable) {

    SkBitmap            result;

    JavaPixelAllocator  allocator(env);



    if (!src->copyTo(&result, dstConfig, &allocator)) {

        return NULL;

    }



    return GraphicsJNI::createBitmap(env, new SkBitmap(result), allocator.getStorageObj(), isMutable, NULL, NULL);

}



static void Bitmap_destructor(JNIEnv* env, jobject, SkBitmap* bitmap) {

#ifdef USE_OPENGL_RENDERER

    if (android::uirenderer::Caches::hasInstance()) {

        android::uirenderer::Caches::getInstance().resourceCache.destructor(bitmap);

        return;

    }

#endif // USE_OPENGL_RENDERER

    delete bitmap;

}



static jboolean Bitmap_recycle(JNIEnv* env, jobject, SkBitmap* bitmap) {

#ifdef USE_OPENGL_RENDERER

    if (android::uirenderer::Caches::hasInstance()) {

        return android::uirenderer::Caches::getInstance().resourceCache.recycle(bitmap);

    }

#endif // USE_OPENGL_RENDERER

    bitmap->setPixels(NULL, NULL);

    return true;

}



// These must match the int values in Bitmap.java

enum JavaEncodeFormat {

    kJPEG_JavaEncodeFormat = 0,

    kPNG_JavaEncodeFormat = 1,

    kWEBP_JavaEncodeFormat = 2

};



static bool Bitmap_compress(JNIEnv* env, jobject clazz, SkBitmap* bitmap,

                            int format, int quality,

                            jobject jstream, jbyteArray jstorage) {

    SkImageEncoder::Type fm;



    switch (format) {

    case kJPEG_JavaEncodeFormat:

        fm = SkImageEncoder::kJPEG_Type;

        break;

    case kPNG_JavaEncodeFormat:

        fm = SkImageEncoder::kPNG_Type;

        break;

    case kWEBP_JavaEncodeFormat:

        fm = SkImageEncoder::kWEBP_Type;

        break;

    default:

        return false;

    }



    bool success = false;

    if (NULL != bitmap) {

        SkAutoLockPixels alp(*bitmap);



        if (NULL == bitmap->getPixels()) {

            return false;

        }



        SkWStream* strm = CreateJavaOutputStreamAdaptor(env, jstream, jstorage);

        if (NULL == strm) {

            return false;

        }



        SkImageEncoder* encoder = SkImageEncoder::Create(fm);

        if (NULL != encoder) {

            success = encoder->encodeStream(strm, *bitmap, quality);

            delete encoder;

        }

        delete strm;

    }

    return success;

}



static void Bitmap_erase(JNIEnv* env, jobject, SkBitmap* bitmap, jint color) {

    bitmap->eraseColor(color);

}



static int Bitmap_width(JNIEnv* env, jobject, SkBitmap* bitmap) {

    return bitmap->width();

}



static int Bitmap_height(JNIEnv* env, jobject, SkBitmap* bitmap) {

    return bitmap->height();

}



static int Bitmap_rowBytes(JNIEnv* env, jobject, SkBitmap* bitmap) {

    return bitmap->rowBytes();

}



static int Bitmap_config(JNIEnv* env, jobject, SkBitmap* bitmap) {

    return bitmap->config();

}



static int Bitmap_getGenerationId(JNIEnv* env, jobject, SkBitmap* bitmap) {

    return bitmap->getGenerationID();

}



static jboolean Bitmap_hasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap) {

    return !bitmap->isOpaque();

}



static void Bitmap_setHasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap,

                               jboolean hasAlpha) {

    bitmap->setIsOpaque(!hasAlpha);

}



static jboolean Bitmap_hasMipMap(JNIEnv* env, jobject, SkBitmap* bitmap) {

    return bitmap->hasHardwareMipMap();

}



static void Bitmap_setHasMipMap(JNIEnv* env, jobject, SkBitmap* bitmap,

                                jboolean hasMipMap) {

    bitmap->setHasHardwareMipMap(hasMipMap);

}



///////////////////////////////////////////////////////////////////////////////



static jobject Bitmap_createFromParcel(JNIEnv* env, jobject, jobject parcel) {

    if (parcel == NULL) {

        SkDebugf("-------- unparcel parcel is NULL\n");

        return NULL;

    }



    android::Parcel* p = android::parcelForJavaObject(env, parcel);



    const bool              isMutable = p->readInt32() != 0;

    const SkBitmap::Config  config = (SkBitmap::Config)p->readInt32();

    const int               width = p->readInt32();

    const int               height = p->readInt32();

    const int               rowBytes = p->readInt32();

    const int               density = p->readInt32();



    if (SkBitmap::kARGB_8888_Config != config &&

            SkBitmap::kRGB_565_Config != config &&

            SkBitmap::kARGB_4444_Config != config &&

            SkBitmap::kIndex8_Config != config &&

            SkBitmap::kA8_Config != config) {

        SkDebugf("Bitmap_createFromParcel unknown config: %d\n", config);

        return NULL;

    }



    SkBitmap* bitmap = new SkBitmap;



    bitmap->setConfig(config, width, height, rowBytes);



    SkColorTable* ctable = NULL;

    if (config == SkBitmap::kIndex8_Config) {

        int count = p->readInt32();

        if (count > 0) {

            size_t size = count * sizeof(SkPMColor);

            const SkPMColor* src = (const SkPMColor*)p->readInplace(size);

            ctable = new SkColorTable(src, count);

        }

    }



    jbyteArray buffer = GraphicsJNI::allocateJavaPixelRef(env, bitmap, ctable);

    if (NULL == buffer) {

        SkSafeUnref(ctable);

        delete bitmap;

        return NULL;

    }



    SkSafeUnref(ctable);



    size_t size = bitmap->getSize();



    android::Parcel::ReadableBlob blob;

    android::status_t status = p->readBlob(size, &blob);

    if (status) {

        doThrowRE(env, "Could not read bitmap from parcel blob.");

        delete bitmap;

        return NULL;

    }



    bitmap->lockPixels();

    memcpy(bitmap->getPixels(), blob.data(), size);

    bitmap->unlockPixels();



    blob.release();

    return GraphicsJNI::createBitmap(env, bitmap, buffer, isMutable, NULL, NULL, density);

}



static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject,

                                     const SkBitmap* bitmap,

                                     jboolean isMutable, jint density,

                                     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());

    p->writeInt32(density);



    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();



    android::Parcel::WritableBlob blob;

    android::status_t status = p->writeBlob(size, &blob);

    if (status) {

        doThrowRE(env, "Could not write bitmap to parcel blob.");

        return false;

    }



    bitmap->lockPixels();

    const void* pSrc =  bitmap->getPixels();

    if (pSrc == NULL) {

        memset(blob.data(), 0, size);

    } else {

        memcpy(blob.data(), pSrc, size);

    }

    bitmap->unlockPixels();



    blob.release();

    return true;

}



static jobject Bitmap_extractAlpha(JNIEnv* env, jobject clazz,

                                   const SkBitmap* src, const SkPaint* paint,

                                   jintArray offsetXY) {

    SkIPoint  offset;

    SkBitmap* dst = new SkBitmap;

    JavaPixelAllocator allocator(env);



    src->extractAlpha(dst, paint, &allocator, &offset);

    // If Skia can't allocate pixels for destination bitmap, it resets

    // it, that is set its pixels buffer to NULL, and zero width and height.

    if (dst->getPixels() == NULL && src->getPixels() != NULL) {

        delete dst;

        doThrowOOME(env, "failed to allocate pixels for alpha");

        return NULL;

    }

    if (offsetXY != 0 && env->GetArrayLength(offsetXY) >= 2) {

        int* array = env->GetIntArrayElements(offsetXY, NULL);

        array[0] = offset.fX;

        array[1] = offset.fY;

        env->ReleaseIntArrayElements(offsetXY, array, 0);

    }



    return GraphicsJNI::createBitmap(env, dst, allocator.getStorageObj(), true, NULL, NULL);

}



///////////////////////////////////////////////////////////////////////////////



static int Bitmap_getPixel(JNIEnv* env, jobject, const SkBitmap* bitmap,

                           int x, int y) {

    SkAutoLockPixels alp(*bitmap);



    ToColorProc proc = ChooseToColorProc(*bitmap);

    if (NULL == proc) {

        return 0;

    }

    const void* src = bitmap->getAddr(x, y);

    if (NULL == src) {

        return 0;

    }



    SkColor dst[1];

    proc(dst, src, 1, bitmap->getColorTable());

    return dst[0];

}



static void Bitmap_getPixels(JNIEnv* env, jobject, const SkBitmap* bitmap,

                             jintArray pixelArray, int offset, int stride,

                             int x, int y, int width, int height) {

    SkAutoLockPixels alp(*bitmap);



    ToColorProc proc = ChooseToColorProc(*bitmap);

    if (NULL == proc) {

        return;

    }

    const void* src = bitmap->getAddr(x, y);

    if (NULL == src) {

        return;

    }



    SkColorTable* ctable = bitmap->getColorTable();

    jint* dst = env->GetIntArrayElements(pixelArray, NULL);

    SkColor* d = (SkColor*)dst + offset;

    while (--height >= 0) {

        proc(d, src, width, ctable);

        d += stride;

        src = (void*)((const char*)src + bitmap->rowBytes());

    }

    env->ReleaseIntArrayElements(pixelArray, dst, 0);

}



///////////////////////////////////////////////////////////////////////////////



static void Bitmap_setPixel(JNIEnv* env, jobject, const SkBitmap* bitmap,

                            int x, int y, SkColor color) {

    SkAutoLockPixels alp(*bitmap);

    if (NULL == bitmap->getPixels()) {

        return;

    }



    FromColorProc proc = ChooseFromColorProc(bitmap->config());

    if (NULL == proc) {

        return;

    }



    proc(bitmap->getAddr(x, y), &color, 1, x, y);

    bitmap->notifyPixelsChanged();

}



static void Bitmap_setPixels(JNIEnv* env, jobject, const SkBitmap* bitmap,

                             jintArray pixelArray, int offset, int stride,

                             int x, int y, int width, int height) {

    GraphicsJNI::SetPixels(env, pixelArray, offset, stride,

                           x, y, width, height, *bitmap);

}



static void Bitmap_copyPixelsToBuffer(JNIEnv* env, jobject,

                                      const SkBitmap* bitmap, jobject jbuffer) {

    SkAutoLockPixels alp(*bitmap);

    const void* src = bitmap->getPixels();



    if (NULL != src) {

        android::AutoBufferPointer abp(env, jbuffer, JNI_TRUE);



        // the java side has already checked that buffer is large enough

        memcpy(abp.pointer(), src, bitmap->getSize());

    }

}



static void Bitmap_copyPixelsFromBuffer(JNIEnv* env, jobject,

                                    const SkBitmap* bitmap, jobject jbuffer) {

    SkAutoLockPixels alp(*bitmap);

    void* dst = bitmap->getPixels();



    if (NULL != dst) {

        android::AutoBufferPointer abp(env, jbuffer, JNI_FALSE);

        // the java side has already checked that buffer is large enough

        memcpy(dst, abp.pointer(), bitmap->getSize());

        bitmap->notifyPixelsChanged();

    }

}



static bool Bitmap_sameAs(JNIEnv* env, jobject, const SkBitmap* bm0,

                             const SkBitmap* bm1) {

    if (bm0->width() != bm1->width() ||

        bm0->height() != bm1->height() ||

        bm0->config() != bm1->config()) {

        return false;

    }



    SkAutoLockPixels alp0(*bm0);

    SkAutoLockPixels alp1(*bm1);



    // if we can't load the pixels, return false

    if (NULL == bm0->getPixels() || NULL == bm1->getPixels()) {

        return false;

    }



    if (bm0->config() == SkBitmap::kIndex8_Config) {

        SkColorTable* ct0 = bm0->getColorTable();

        SkColorTable* ct1 = bm1->getColorTable();

        if (NULL == ct0 || NULL == ct1) {

            return false;

        }

        if (ct0->count() != ct1->count()) {

            return false;

        }



        SkAutoLockColors alc0(ct0);

        SkAutoLockColors alc1(ct1);

        const size_t size = ct0->count() * sizeof(SkPMColor);

        if (memcmp(alc0.colors(), alc1.colors(), size) != 0) {

            return false;

        }

    }



    // now compare each scanline. We can't do the entire buffer at once,

    // since we don't care about the pixel values that might extend beyond

    // the width (since the scanline might be larger than the logical width)

    const int h = bm0->height();

    const size_t size = bm0->width() * bm0->bytesPerPixel();

    for (int y = 0; y < h; y++) {

        if (memcmp(bm0->getAddr(0, y), bm1->getAddr(0, y), size) != 0) {

            return false;

        }

    }

    return true;

}



static void Bitmap_prepareToDraw(JNIEnv* env, jobject, SkBitmap* bitmap) {

    bitmap->lockPixels();

    bitmap->unlockPixels();

}



///////////////////////////////////////////////////////////////////////////////



#include <android_runtime/AndroidRuntime.h>



static JNINativeMethod gBitmapMethods[] = {

    {   "nativeCreate",             "([IIIIIIZ)Landroid/graphics/Bitmap;",

        (void*)Bitmap_creator },

    {   "nativeCopy",               "(IIZ)Landroid/graphics/Bitmap;",

        (void*)Bitmap_copy },

    {   "nativeDestructor",         "(I)V", (void*)Bitmap_destructor },

    {   "nativeRecycle",            "(I)Z", (void*)Bitmap_recycle },

    {   "nativeCompress",           "(IIILjava/io/OutputStream;[B)Z",

        (void*)Bitmap_compress },

    {   "nativeErase",              "(II)V", (void*)Bitmap_erase },

    {   "nativeWidth",              "(I)I", (void*)Bitmap_width },

    {   "nativeHeight",             "(I)I", (void*)Bitmap_height },

    {   "nativeRowBytes",           "(I)I", (void*)Bitmap_rowBytes },

    {   "nativeConfig",             "(I)I", (void*)Bitmap_config },

    {   "nativeHasAlpha",           "(I)Z", (void*)Bitmap_hasAlpha },

    {   "nativeSetHasAlpha",        "(IZ)V", (void*)Bitmap_setHasAlpha },

    {   "nativeHasMipMap",          "(I)Z", (void*)Bitmap_hasMipMap },

    {   "nativeSetHasMipMap",       "(IZ)V", (void*)Bitmap_setHasMipMap },

    {   "nativeCreateFromParcel",

        "(Landroid/os/Parcel;)Landroid/graphics/Bitmap;",

        (void*)Bitmap_createFromParcel },

    {   "nativeWriteToParcel",      "(IZILandroid/os/Parcel;)Z",

        (void*)Bitmap_writeToParcel },

    {   "nativeExtractAlpha",       "(II[I)Landroid/graphics/Bitmap;",

        (void*)Bitmap_extractAlpha },

    {   "nativeGenerationId",       "(I)I", (void*)Bitmap_getGenerationId },

    {   "nativeGetPixel",           "(III)I", (void*)Bitmap_getPixel },

    {   "nativeGetPixels",          "(I[IIIIIII)V", (void*)Bitmap_getPixels },

    {   "nativeSetPixel",           "(IIII)V", (void*)Bitmap_setPixel },

    {   "nativeSetPixels",          "(I[IIIIIII)V", (void*)Bitmap_setPixels },

    {   "nativeCopyPixelsToBuffer", "(ILjava/nio/Buffer;)V",

                                            (void*)Bitmap_copyPixelsToBuffer },

    {   "nativeCopyPixelsFromBuffer", "(ILjava/nio/Buffer;)V",

                                            (void*)Bitmap_copyPixelsFromBuffer },

    {   "nativeSameAs",             "(II)Z", (void*)Bitmap_sameAs },

    {   "nativePrepareToDraw",      "(I)V", (void*)Bitmap_prepareToDraw },

};



#define kClassPathName  "android/graphics/Bitmap"



int register_android_graphics_Bitmap(JNIEnv* env)

{

    return android::AndroidRuntime::registerNativeMethods(env, kClassPathName,

                                gBitmapMethods, SK_ARRAY_COUNT(gBitmapMethods));

}