630 lines
21 KiB
C++
630 lines
21 KiB
C++
#include "SkBitmap.h"
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#include "SkImageEncoder.h"
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#include "SkColorPriv.h"
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#include "GraphicsJNI.h"
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#include "SkDither.h"
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#include "SkUnPreMultiply.h"
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#include <binder/Parcel.h>
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#include "android_util_Binder.h"
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#include "android_nio_utils.h"
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#include "CreateJavaOutputStreamAdaptor.h"
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#include <jni.h>
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#if 0
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#define TRACE_BITMAP(code) code
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#else
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#define TRACE_BITMAP(code)
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#endif
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///////////////////////////////////////////////////////////////////////////////
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// Conversions to/from SkColor, for get/setPixels, and the create method, which
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// is basically like setPixels
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typedef void (*FromColorProc)(void* dst, const SkColor src[], int width,
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int x, int y);
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static void FromColor_D32(void* dst, const SkColor src[], int width,
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int, int) {
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SkPMColor* d = (SkPMColor*)dst;
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for (int i = 0; i < width; i++) {
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*d++ = SkPreMultiplyColor(*src++);
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}
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}
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static void FromColor_D565(void* dst, const SkColor src[], int width,
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int x, int y) {
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uint16_t* d = (uint16_t*)dst;
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DITHER_565_SCAN(y);
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for (int stop = x + width; x < stop; x++) {
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SkColor c = *src++;
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*d++ = SkDitherRGBTo565(SkColorGetR(c), SkColorGetG(c), SkColorGetB(c),
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DITHER_VALUE(x));
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}
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}
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static void FromColor_D4444(void* dst, const SkColor src[], int width,
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int x, int y) {
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SkPMColor16* d = (SkPMColor16*)dst;
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DITHER_4444_SCAN(y);
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for (int stop = x + width; x < stop; x++) {
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SkPMColor c = SkPreMultiplyColor(*src++);
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*d++ = SkDitherARGB32To4444(c, DITHER_VALUE(x));
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// *d++ = SkPixel32ToPixel4444(c);
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}
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}
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// can return NULL
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static FromColorProc ChooseFromColorProc(SkBitmap::Config config) {
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switch (config) {
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case SkBitmap::kARGB_8888_Config:
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return FromColor_D32;
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case SkBitmap::kARGB_4444_Config:
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return FromColor_D4444;
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case SkBitmap::kRGB_565_Config:
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return FromColor_D565;
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default:
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break;
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}
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return NULL;
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}
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bool GraphicsJNI::SetPixels(JNIEnv* env, jintArray srcColors,
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int srcOffset, int srcStride,
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int x, int y, int width, int height,
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const SkBitmap& dstBitmap) {
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SkAutoLockPixels alp(dstBitmap);
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void* dst = dstBitmap.getPixels();
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FromColorProc proc = ChooseFromColorProc(dstBitmap.config());
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if (NULL == dst || NULL == proc) {
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return false;
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}
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const jint* array = env->GetIntArrayElements(srcColors, NULL);
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const SkColor* src = (const SkColor*)array + srcOffset;
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// reset to to actual choice from caller
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dst = dstBitmap.getAddr(x, y);
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// now copy/convert each scanline
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for (int y = 0; y < height; y++) {
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proc(dst, src, width, x, y);
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src += srcStride;
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dst = (char*)dst + dstBitmap.rowBytes();
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}
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env->ReleaseIntArrayElements(srcColors, const_cast<jint*>(array),
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JNI_ABORT);
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return true;
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}
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//////////////////// ToColor procs
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typedef void (*ToColorProc)(SkColor dst[], const void* src, int width,
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SkColorTable*);
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static void ToColor_S32_Alpha(SkColor dst[], const void* src, int width,
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SkColorTable*) {
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SkASSERT(width > 0);
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const SkPMColor* s = (const SkPMColor*)src;
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do {
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*dst++ = SkUnPreMultiply::PMColorToColor(*s++);
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} while (--width != 0);
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}
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static void ToColor_S32_Opaque(SkColor dst[], const void* src, int width,
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SkColorTable*) {
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SkASSERT(width > 0);
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const SkPMColor* s = (const SkPMColor*)src;
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do {
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SkPMColor c = *s++;
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*dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),
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SkGetPackedB32(c));
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} while (--width != 0);
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}
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static void ToColor_S4444_Alpha(SkColor dst[], const void* src, int width,
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SkColorTable*) {
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SkASSERT(width > 0);
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const SkPMColor16* s = (const SkPMColor16*)src;
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do {
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*dst++ = SkUnPreMultiply::PMColorToColor(SkPixel4444ToPixel32(*s++));
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} while (--width != 0);
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}
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static void ToColor_S4444_Opaque(SkColor dst[], const void* src, int width,
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SkColorTable*) {
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SkASSERT(width > 0);
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const SkPMColor* s = (const SkPMColor*)src;
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do {
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SkPMColor c = SkPixel4444ToPixel32(*s++);
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*dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),
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SkGetPackedB32(c));
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} while (--width != 0);
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}
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static void ToColor_S565(SkColor dst[], const void* src, int width,
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SkColorTable*) {
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SkASSERT(width > 0);
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const uint16_t* s = (const uint16_t*)src;
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do {
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uint16_t c = *s++;
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*dst++ = SkColorSetRGB(SkPacked16ToR32(c), SkPacked16ToG32(c),
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SkPacked16ToB32(c));
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} while (--width != 0);
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}
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static void ToColor_SI8_Alpha(SkColor dst[], const void* src, int width,
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SkColorTable* ctable) {
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SkASSERT(width > 0);
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const uint8_t* s = (const uint8_t*)src;
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const SkPMColor* colors = ctable->lockColors();
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do {
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*dst++ = SkUnPreMultiply::PMColorToColor(colors[*s++]);
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} while (--width != 0);
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ctable->unlockColors(false);
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}
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static void ToColor_SI8_Opaque(SkColor dst[], const void* src, int width,
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SkColorTable* ctable) {
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SkASSERT(width > 0);
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const uint8_t* s = (const uint8_t*)src;
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const SkPMColor* colors = ctable->lockColors();
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do {
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SkPMColor c = colors[*s++];
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*dst++ = SkColorSetRGB(SkGetPackedR32(c), SkGetPackedG32(c),
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SkGetPackedB32(c));
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} while (--width != 0);
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ctable->unlockColors(false);
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}
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// can return NULL
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static ToColorProc ChooseToColorProc(const SkBitmap& src) {
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switch (src.config()) {
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case SkBitmap::kARGB_8888_Config:
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return src.isOpaque() ? ToColor_S32_Opaque : ToColor_S32_Alpha;
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case SkBitmap::kARGB_4444_Config:
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return src.isOpaque() ? ToColor_S4444_Opaque : ToColor_S4444_Alpha;
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case SkBitmap::kRGB_565_Config:
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return ToColor_S565;
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case SkBitmap::kIndex8_Config:
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if (src.getColorTable() == NULL) {
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return NULL;
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}
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return src.isOpaque() ? ToColor_SI8_Opaque : ToColor_SI8_Alpha;
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default:
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break;
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}
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return NULL;
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}
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///////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////
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static jobject Bitmap_creator(JNIEnv* env, jobject, jintArray jColors,
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int offset, int stride, int width, int height,
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SkBitmap::Config config, jboolean isMutable) {
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if (width <= 0 || height <= 0) {
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doThrowIAE(env, "width and height must be > 0");
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return NULL;
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}
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if (NULL != jColors) {
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size_t n = env->GetArrayLength(jColors);
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if (n < SkAbs32(stride) * (size_t)height) {
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doThrowAIOOBE(env);
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return NULL;
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}
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}
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SkBitmap bitmap;
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bitmap.setConfig(config, width, height);
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if (!GraphicsJNI::setJavaPixelRef(env, &bitmap, NULL, true)) {
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return NULL;
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}
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if (jColors != NULL) {
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GraphicsJNI::SetPixels(env, jColors, offset, stride,
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0, 0, width, height, bitmap);
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}
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return GraphicsJNI::createBitmap(env, new SkBitmap(bitmap), isMutable,
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NULL);
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}
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static jobject Bitmap_copy(JNIEnv* env, jobject, const SkBitmap* src,
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SkBitmap::Config dstConfig, jboolean isMutable) {
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SkBitmap result;
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JavaPixelAllocator allocator(env, true);
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if (!src->copyTo(&result, dstConfig, &allocator)) {
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return NULL;
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}
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return GraphicsJNI::createBitmap(env, new SkBitmap(result), isMutable,
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NULL);
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}
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static void Bitmap_destructor(JNIEnv* env, jobject, SkBitmap* bitmap) {
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delete bitmap;
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}
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static void Bitmap_recycle(JNIEnv* env, jobject, SkBitmap* bitmap) {
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bitmap->setPixels(NULL, NULL);
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}
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// These must match the int values in Bitmap.java
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enum JavaEncodeFormat {
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kJPEG_JavaEncodeFormat = 0,
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kPNG_JavaEncodeFormat = 1
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};
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static bool Bitmap_compress(JNIEnv* env, jobject clazz, SkBitmap* bitmap,
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int format, int quality,
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jobject jstream, jbyteArray jstorage) {
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SkImageEncoder::Type fm;
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switch (format) {
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case kJPEG_JavaEncodeFormat:
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fm = SkImageEncoder::kJPEG_Type;
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break;
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case kPNG_JavaEncodeFormat:
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fm = SkImageEncoder::kPNG_Type;
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break;
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default:
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return false;
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}
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bool success = false;
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SkWStream* strm = CreateJavaOutputStreamAdaptor(env, jstream, jstorage);
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if (NULL != strm) {
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SkImageEncoder* encoder = SkImageEncoder::Create(fm);
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if (NULL != encoder) {
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success = encoder->encodeStream(strm, *bitmap, quality);
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delete encoder;
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}
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delete strm;
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}
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return success;
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}
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static void Bitmap_erase(JNIEnv* env, jobject, SkBitmap* bitmap, jint color) {
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bitmap->eraseColor(color);
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}
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static int Bitmap_width(JNIEnv* env, jobject, SkBitmap* bitmap) {
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return bitmap->width();
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}
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static int Bitmap_height(JNIEnv* env, jobject, SkBitmap* bitmap) {
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return bitmap->height();
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}
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static int Bitmap_rowBytes(JNIEnv* env, jobject, SkBitmap* bitmap) {
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return bitmap->rowBytes();
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}
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static int Bitmap_config(JNIEnv* env, jobject, SkBitmap* bitmap) {
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return bitmap->config();
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}
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static jboolean Bitmap_hasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap) {
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return !bitmap->isOpaque();
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}
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static void Bitmap_setHasAlpha(JNIEnv* env, jobject, SkBitmap* bitmap,
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jboolean hasAlpha) {
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bitmap->setIsOpaque(!hasAlpha);
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}
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///////////////////////////////////////////////////////////////////////////////
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static jobject Bitmap_createFromParcel(JNIEnv* env, jobject, jobject parcel) {
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if (parcel == NULL) {
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SkDebugf("-------- unparcel parcel is NULL\n");
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return NULL;
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}
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android::Parcel* p = android::parcelForJavaObject(env, parcel);
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const bool isMutable = p->readInt32() != 0;
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const SkBitmap::Config config = (SkBitmap::Config)p->readInt32();
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const int width = p->readInt32();
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const int height = p->readInt32();
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const int rowBytes = p->readInt32();
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const int density = p->readInt32();
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if (SkBitmap::kARGB_8888_Config != config &&
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SkBitmap::kRGB_565_Config != config &&
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SkBitmap::kARGB_4444_Config != config &&
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SkBitmap::kIndex8_Config != config &&
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SkBitmap::kA8_Config != config) {
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SkDebugf("Bitmap_createFromParcel unknown config: %d\n", config);
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return NULL;
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}
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SkBitmap* bitmap = new SkBitmap;
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bitmap->setConfig(config, width, height, rowBytes);
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SkColorTable* ctable = NULL;
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if (config == SkBitmap::kIndex8_Config) {
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int count = p->readInt32();
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if (count > 0) {
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size_t size = count * sizeof(SkPMColor);
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const SkPMColor* src = (const SkPMColor*)p->readInplace(size);
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ctable = new SkColorTable(src, count);
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}
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}
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if (!GraphicsJNI::setJavaPixelRef(env, bitmap, ctable, true)) {
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ctable->safeUnref();
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delete bitmap;
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return NULL;
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}
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ctable->safeUnref();
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size_t size = bitmap->getSize();
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bitmap->lockPixels();
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memcpy(bitmap->getPixels(), p->readInplace(size), size);
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bitmap->unlockPixels();
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return GraphicsJNI::createBitmap(env, bitmap, isMutable, NULL, density);
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}
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static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject,
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const SkBitmap* bitmap,
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jboolean isMutable, jint density,
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jobject parcel) {
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if (parcel == NULL) {
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SkDebugf("------- writeToParcel null parcel\n");
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return false;
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}
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android::Parcel* p = android::parcelForJavaObject(env, parcel);
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p->writeInt32(isMutable);
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p->writeInt32(bitmap->config());
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p->writeInt32(bitmap->width());
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p->writeInt32(bitmap->height());
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p->writeInt32(bitmap->rowBytes());
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p->writeInt32(density);
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if (bitmap->getConfig() == SkBitmap::kIndex8_Config) {
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SkColorTable* ctable = bitmap->getColorTable();
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if (ctable != NULL) {
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int count = ctable->count();
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p->writeInt32(count);
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memcpy(p->writeInplace(count * sizeof(SkPMColor)),
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ctable->lockColors(), count * sizeof(SkPMColor));
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ctable->unlockColors(false);
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} else {
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p->writeInt32(0); // indicate no ctable
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}
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}
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size_t size = bitmap->getSize();
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bitmap->lockPixels();
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memcpy(p->writeInplace(size), bitmap->getPixels(), size);
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bitmap->unlockPixels();
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return true;
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}
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static jobject Bitmap_extractAlpha(JNIEnv* env, jobject clazz,
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const SkBitmap* src, const SkPaint* paint,
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jintArray offsetXY) {
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SkIPoint offset;
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SkBitmap* dst = new SkBitmap;
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src->extractAlpha(dst, paint, &offset);
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if (offsetXY != 0 && env->GetArrayLength(offsetXY) >= 2) {
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int* array = env->GetIntArrayElements(offsetXY, NULL);
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array[0] = offset.fX;
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array[1] = offset.fY;
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env->ReleaseIntArrayElements(offsetXY, array, 0);
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}
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return GraphicsJNI::createBitmap(env, dst, true, NULL);
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}
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///////////////////////////////////////////////////////////////////////////////
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static int Bitmap_getPixel(JNIEnv* env, jobject, const SkBitmap* bitmap,
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int x, int y) {
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SkAutoLockPixels alp(*bitmap);
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ToColorProc proc = ChooseToColorProc(*bitmap);
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if (NULL == proc) {
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return 0;
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}
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const void* src = bitmap->getAddr(x, y);
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if (NULL == src) {
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return 0;
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}
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SkColor dst[1];
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proc(dst, src, 1, bitmap->getColorTable());
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return dst[0];
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}
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static void Bitmap_getPixels(JNIEnv* env, jobject, const SkBitmap* bitmap,
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jintArray pixelArray, int offset, int stride,
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int x, int y, int width, int height) {
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SkAutoLockPixels alp(*bitmap);
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ToColorProc proc = ChooseToColorProc(*bitmap);
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if (NULL == proc) {
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return;
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}
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const void* src = bitmap->getAddr(x, y);
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if (NULL == src) {
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return;
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}
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SkColorTable* ctable = bitmap->getColorTable();
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jint* dst = env->GetIntArrayElements(pixelArray, NULL);
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SkColor* d = (SkColor*)dst + offset;
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while (--height >= 0) {
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proc(d, src, width, ctable);
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d += stride;
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src = (void*)((const char*)src + bitmap->rowBytes());
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}
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env->ReleaseIntArrayElements(pixelArray, dst, 0);
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}
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///////////////////////////////////////////////////////////////////////////////
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static void Bitmap_setPixel(JNIEnv* env, jobject, const SkBitmap* bitmap,
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int x, int y, SkColor color) {
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SkAutoLockPixels alp(*bitmap);
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if (NULL == bitmap->getPixels()) {
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return;
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}
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FromColorProc proc = ChooseFromColorProc(bitmap->config());
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if (NULL == proc) {
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return;
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}
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proc(bitmap->getAddr(x, y), &color, 1, x, y);
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}
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static void Bitmap_setPixels(JNIEnv* env, jobject, const SkBitmap* bitmap,
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jintArray pixelArray, int offset, int stride,
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int x, int y, int width, int height) {
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GraphicsJNI::SetPixels(env, pixelArray, offset, stride,
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x, y, width, height, *bitmap);
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}
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static void Bitmap_copyPixelsToBuffer(JNIEnv* env, jobject,
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const SkBitmap* bitmap, jobject jbuffer) {
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SkAutoLockPixels alp(*bitmap);
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const void* src = bitmap->getPixels();
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if (NULL != src) {
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android::AutoBufferPointer abp(env, jbuffer, JNI_TRUE);
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// the java side has already checked that buffer is large enough
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memcpy(abp.pointer(), src, bitmap->getSize());
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}
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}
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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());
|
|
}
|
|
}
|
|
|
|
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)V", (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 },
|
|
{ "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 },
|
|
{ "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);
|
|
int register_android_graphics_Bitmap(JNIEnv* env)
|
|
{
|
|
return android::AndroidRuntime::registerNativeMethods(env, kClassPathName,
|
|
gBitmapMethods, SK_ARRAY_COUNT(gBitmapMethods));
|
|
}
|
|
|