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Copy pathimage.cpp
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182 lines (142 loc) · 4.96 KB
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#define STB_IMAGE_IMPLEMENTATION
#define STBI_NO_BMP
#define STBI_NO_PSD
#define STBI_NO_TGA
#define STBI_NO_GIF
#define STBI_NO_GIF
#define STBI_NO_PIC
#define STBI_NO_PNM
#include "../stb/stb_image.h"
#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "../stb/stb_image_write.h"
JNIEXPORT jintArray JNICALL Java_javaforce_ui_Image_nloadPNG
(JNIEnv *e, jobject o, jbyteArray data, jintArray size)
{
int x, y, chs;
jboolean isCopy;
uint8 *data_ptr = (uint8*)e->GetPrimitiveArrayCritical(data, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
int data_len = e->GetArrayLength(data);
stbi_uc* px_ptr = stbi_load_from_memory(data_ptr, data_len, &x, &y, &chs, 4);
e->ReleasePrimitiveArrayCritical(data, data_ptr, JNI_ABORT);
if (px_ptr == NULL) return NULL;
int *size_ptr = (int*)e->GetPrimitiveArrayCritical(size, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
size_ptr[0] = x;
size_ptr[1] = y;
e->ReleasePrimitiveArrayCritical(size, size_ptr, JNI_COMMIT);
jintArray out = e->NewIntArray(x*y);
uint8 *out_ptr = (uint8*)e->GetPrimitiveArrayCritical(out, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
//convert RGBA to BGRA
int xy = x * y;
uint8* dst = out_ptr;
uint8* src = px_ptr;
int off = 0;
for(int i=0;i<xy;i++) {
dst[off+2] = src[off+0];
dst[off+1] = src[off+1];
dst[off+0] = src[off+2];
dst[off+3] = src[off+3];
off += 4;
}
e->ReleasePrimitiveArrayCritical(out, out_ptr, JNI_COMMIT);
stbi_image_free(px_ptr);
return out;
}
struct write_ctx {
uint8* buf;
int siz;
};
static void write_func(void *context, void *data, int size) {
write_ctx* ctx = (write_ctx*)context;
if (ctx->buf == NULL) {
ctx->buf = (uint8*)malloc(size);
memcpy(ctx->buf, data, size);
ctx->siz = size;
} else {
ctx->buf = (uint8*)realloc(ctx->buf, ctx->siz + size);
memcpy(ctx->buf + ctx->siz, data, size);
ctx->siz += size;
}
}
JNIEXPORT jbyteArray JNICALL Java_javaforce_ui_Image_nsavePNG
(JNIEnv *e, jobject o, jintArray px, jint x, jint y)
{
write_ctx ctx;
jboolean isCopy;
int xy = x * y;
ctx.buf = NULL;
ctx.siz = 0;
int px_len = e->GetArrayLength(px);
if (px_len != x * y) return NULL;
uint8 *px_ptr = (uint8*)e->GetPrimitiveArrayCritical(px, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
uint8* rgb_ptr = (uint8*)malloc(xy*4);
//convert RGBA to BGRA
uint8* dst = rgb_ptr;
uint8* src = px_ptr;
int off = 0;
for(int i=0;i<xy;i++) {
dst[off+2] = src[off+0];
dst[off+1] = src[off+1];
dst[off+0] = src[off+2];
dst[off+3] = src[off+3];
off += 4;
}
stbi_write_png_to_func(write_func, (void*)&ctx, x, y, 4, rgb_ptr, x*4);
free(rgb_ptr);
e->ReleasePrimitiveArrayCritical(px, px_ptr, JNI_ABORT);
jbyteArray out = e->NewByteArray(ctx.siz);
uint8 *out_ptr = (uint8*)e->GetPrimitiveArrayCritical(out, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
memcpy(out_ptr, ctx.buf, ctx.siz);
e->ReleasePrimitiveArrayCritical(out, out_ptr, JNI_COMMIT);
free(ctx.buf);
return out;
}
JNIEXPORT jintArray JNICALL Java_javaforce_ui_Image_nloadJPG
(JNIEnv *e, jobject o, jbyteArray data, jintArray size)
{
int x, y, chs;
jboolean isCopy;
uint8 *data_ptr = (uint8*)e->GetPrimitiveArrayCritical(data, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
int data_len = e->GetArrayLength(data);
stbi_uc* px_ptr = stbi_load_from_memory(data_ptr, data_len, &x, &y, &chs, 4);
e->ReleasePrimitiveArrayCritical(data, data_ptr, JNI_ABORT);
if (px_ptr == NULL) return NULL;
int *size_ptr = (int*)e->GetPrimitiveArrayCritical(size, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
size_ptr[0] = x;
size_ptr[1] = y;
e->ReleasePrimitiveArrayCritical(size, size_ptr, JNI_COMMIT);
jintArray out = e->NewIntArray(x*y);
uint8 *out_ptr = (uint8*)e->GetPrimitiveArrayCritical(out, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
memcpy(out_ptr, px_ptr, x*y*4);
e->ReleasePrimitiveArrayCritical(out, out_ptr, JNI_COMMIT);
stbi_image_free(px_ptr);
return out;
}
JNIEXPORT jbyteArray JNICALL Java_javaforce_ui_Image_nsaveJPG
(JNIEnv *e, jobject o, jintArray px, jint x, jint y, jint quality)
{
write_ctx ctx;
jboolean isCopy;
ctx.buf = NULL;
ctx.siz = 0;
int px_len = e->GetArrayLength(px);
if (px_len != x * y) return NULL;
uint8 *px_ptr = (uint8*)e->GetPrimitiveArrayCritical(px, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
stbi_write_jpg_to_func(write_func, (void*)&ctx, x, y, 4, px_ptr, quality);
e->ReleasePrimitiveArrayCritical(px, px_ptr, JNI_ABORT);
jbyteArray out = e->NewByteArray(ctx.siz);
uint8 *out_ptr = (uint8*)e->GetPrimitiveArrayCritical(out, &isCopy);
if (!shownCopyWarning && isCopy == JNI_TRUE) copyWarning();
memcpy(out_ptr, ctx.buf, ctx.siz);
e->ReleasePrimitiveArrayCritical(out, out_ptr, JNI_COMMIT);
free(ctx.buf);
return out;
}