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Bitmap: implement nativeCopyPixelsFromBuffer

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This commit is contained in:
Mis012
2024-06-28 22:15:57 +02:00
parent 26d6337a34
commit 2c1e0dd3b8
3 changed files with 17 additions and 6 deletions
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12
src/api-impl-jni/android_graphics_Bitmap.c
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@@ -159,6 +159,18 @@ JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsToBuffer(JNI
release_nio_buffer(env, array_ref, array); release_nio_buffer(env, array_ref, array);
} }
JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsFromBuffer(JNIEnv *env, jclass this, jlong _pixbuf, jobject buffer)
{
GdkPixbuf *pixbuf = _PTR(_pixbuf);
size_t pixbuf_size = gdk_pixbuf_get_rowstride(pixbuf) * (gdk_pixbuf_get_height(pixbuf) - 1)
+ /* last row: */ gdk_pixbuf_get_width(pixbuf) * ((gdk_pixbuf_get_n_channels(pixbuf) * gdk_pixbuf_get_bits_per_sample(pixbuf) + 7) / 8);
jarray array_ref;
jbyte *array;
uint8_t *pixels = get_nio_buffer(env, buffer, &array_ref, &array);
memcpy(gdk_pixbuf_get_pixels(pixbuf), pixels, pixbuf_size);
release_nio_buffer(env, array_ref, array);
}
JNIEXPORT void JNICALL Java_android_graphics_Bitmap_native_1unref_1texture(JNIEnv *env, jclass class, jlong texture_ptr) JNIEXPORT void JNICALL Java_android_graphics_Bitmap_native_1unref_1texture(JNIEnv *env, jclass class, jlong texture_ptr)
{ {
GdkTexture *texture = GDK_TEXTURE(_PTR(texture_ptr)); GdkTexture *texture = GDK_TEXTURE(_PTR(texture_ptr));

4
src/api-impl-jni/generated_headers/android_graphics_Bitmap.h
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@@ -182,10 +182,10 @@ JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsToBuffer
/* /*
* Class: android_graphics_Bitmap * Class: android_graphics_Bitmap
* Method: nativeCopyPixelsFromBuffer * Method: nativeCopyPixelsFromBuffer
* Signature: (ILjava/nio/Buffer;)V * Signature: (JLjava/nio/Buffer;)V
*/ */
JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsFromBuffer JNIEXPORT void JNICALL Java_android_graphics_Bitmap_nativeCopyPixelsFromBuffer
(JNIEnv *, jclass, jint, jobject); (JNIEnv *, jclass, jlong, jobject);
/* /*
* Class: android_graphics_Bitmap * Class: android_graphics_Bitmap

7
src/api-impl/android/graphics/Bitmap.java
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@@ -580,7 +580,7 @@ public final class Bitmap {
throw new RuntimeException("Buffer not large enough for pixels"); throw new RuntimeException("Buffer not large enough for pixels");
} }
nativeCopyPixelsFromBuffer(mNativeBitmap, src); nativeCopyPixelsFromBuffer(pixbuf, src);
// now update the buffer's position // now update the buffer's position
int position = src.position(); int position = src.position();
@@ -1651,9 +1651,8 @@ public final class Bitmap {
private static native void nativeSetPixels(int nativeBitmap, int[] colors, private static native void nativeSetPixels(int nativeBitmap, int[] colors,
int offset, int stride, int x, int y, int offset, int stride, int x, int y,
int width, int height, boolean isPremultiplied); int width, int height, boolean isPremultiplied);
private static native void nativeCopyPixelsToBuffer(long pixbuf, private static native void nativeCopyPixelsToBuffer(long pixbuf, Buffer dst);
Buffer dst); private static native void nativeCopyPixelsFromBuffer(long pixbuf, Buffer src);
private static native void nativeCopyPixelsFromBuffer(int nb, Buffer src);
private static native int nativeGenerationId(int nativeBitmap); private static native int nativeGenerationId(int nativeBitmap);
// returns a new bitmap built from the native bitmap's alpha, and the paint // returns a new bitmap built from the native bitmap's alpha, and the paint