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Bitmap: implement decodeStream, getPixels and recycle

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This commit is contained in:
Julian Winkler
2023-06-18 11:09:52 +02:00
parent 0454dcbfd5
commit 58ec3733d3
5 changed files with 41 additions and 13 deletions
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26
src/api-impl-jni/android_graphics_Bitmap.c
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@@ -26,3 +26,29 @@ JNIEXPORT jint JNICALL Java_android_graphics_Bitmap_getHeight(JNIEnv *env, jobje
return gdk_pixbuf_get_height(pixbuf);
}
JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeGetPixels(JNIEnv *env, jclass, jlong bitmapHandle, jintArray pixelArray, jint offset, jint stride, jint x, jint y, jint width, jint height, jboolean premultiplied) {
int i,j;
GdkPixbuf *pixbuf = _PTR(bitmapHandle);
g_assert(gdk_pixbuf_get_n_channels(pixbuf) == 4);
g_assert(gdk_pixbuf_get_colorspace(pixbuf) == GDK_COLORSPACE_RGB);
jint *dst = (*env)->GetIntArrayElements(env, pixelArray, NULL);
jint *d = dst + offset;
const guint8 *src = gdk_pixbuf_read_pixels(pixbuf);
int rowstride = gdk_pixbuf_get_rowstride(pixbuf);
src += y * rowstride + x;
for (i=0; i<height; i++) {
for (j=0; j<width; j++) {
d[j] = src[4*j+3] << 24 | src[4*j+0] << 16 | src[4*j+1] << 8 | src[4*j+2];
}
d += stride;
src += rowstride;
}
(*env)->ReleaseIntArrayElements(env, pixelArray, dst, 0);
}
JNIEXPORT jboolean JNICALL Java_android_graphics_Bitmap_nativeRecycle(JNIEnv *env, jclass, jlong bitmapHandle) {
GdkPixbuf *pixbuf = _PTR(bitmapHandle);
g_object_unref(pixbuf);
return true;
}

8
src/api-impl-jni/generated_headers/android_graphics_Bitmap.h
View File

@@ -54,10 +54,10 @@ JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeDestructor
/*
* Class: android_graphics_Bitmap
* Method: nativeRecycle
* Signature: (I)Z
* Signature: (J)Z
*/
JNIEXPORT jboolean JNICALL Java_android_graphics_Bitmap_nativeRecycle
(JNIEnv *, jclass, jint);
(JNIEnv *, jclass, jlong);
/*
* Class: android_graphics_Bitmap
@@ -110,10 +110,10 @@ JNIEXPORT jint JNICALL Java_android_graphics_Bitmap_nativeGetPixel
/*
* Class: android_graphics_Bitmap
* Method: nativeGetPixels
* Signature: (I[IIIIIIIZ)V
* Signature: (J[IIIIIIIZ)V
*/
JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeGetPixels
(JNIEnv *, jclass, jint, jintArray, jint, jint, jint, jint, jint, jint, jboolean);
(JNIEnv *, jclass, jlong, jintArray, jint, jint, jint, jint, jint, jint, jboolean);
/*
* Class: android_graphics_Bitmap