/**
* Helper function.
* Retrieve buffer for the specified graphics.
*
* @param graphicshandle A KNI handle to a graphics object.
* @return A pointer to the graphics buffer.
*/
static gxj_pixel_type* getGraphicsBuffer(jobject graphicsHandle) {
gxj_screen_buffer sbuf;
gxj_screen_buffer* gimg;
gxj_pixel_type* dbuffer;
gimg = GXJ_GET_GRAPHICS_SCREEN_BUFFER(graphicsHandle, &sbuf);
if (gimg == NULL) {
dbuffer = gxj_system_screen_buffer.pixelData;
} else {
dbuffer = gimg->pixelData;
}
return dbuffer;
}
/* Copy engine buffer back to MIDP */
void
JSR239_putWindowContents(jobject graphicsHandle,
jint delta_height,
JSR239_Pixmap *src, jint flipY) {
void* s;
void* d;
KNI_StartHandles(1);
KNI_DeclareHandle(GraphicsClassHandle);
#ifdef DEBUG
printf("JSR239_putWindowContents >>\n");
#endif
KNI_FindClass("javax/microedition/lcdui/Graphics", GraphicsClassHandle);
if (!KNI_IsInstanceOf(graphicsHandle, GraphicsClassHandle)) {
#ifdef DEBUG
printf("JSR239_putWindowContents only implemented for graphicsHandle "
"instanceof Graphics!\n");
#endif
} else {
gxj_screen_buffer sbuf;
gxj_screen_buffer* gimg;
// Obtain the dimensions of the destination.
jint dest_width = lcdlf_get_screen_width();
jint dest_height = lcdlf_get_screen_height();
jint min_height = 0;
gimg = GXJ_GET_GRAPHICS_SCREEN_BUFFER(graphicsHandle, &sbuf);
if (gimg != NULL) {
dest_width = gimg->width;
dest_height= gimg->height;
}
#ifdef DEBUG
printf("JSR239_putWindowContents:\n");
printf(" src Bpp = %d\n", src->pixelBytes);
printf(" src width = %d\n", src->width);
printf(" src height = %d\n", src->height);
printf(" min height = %d\n", min_height);
#endif
/* IMPL_NOTE: get clip sizes into account. */
copyToScreenBuffer(src, delta_height, flipY);
/* src->screen_buffer is an output of copyToScreenBuffer function. */
s = (void*)src->screen_buffer;
d = (void*)getGraphicsBuffer(graphicsHandle);
min_height = (dest_height > src->height) ? src->height : dest_height;
if ((src->width != dest_width) ||
(sizeof(gxj_pixel_type) != 2)) {
#ifdef DEBUG
printf("JSR239: offscreen buffer data is incorrect.\n");
#endif
} else {
/* Source data must be in 16bit 565 format. */
JSR239_memcpy(d, s,
dest_width * min_height * sizeof(gxj_pixel_type));
}
}
#ifdef DEBUG
printf("JSR239_putWindowContents <<\n");
#endif
KNI_EndHandles();
}
/* Copy engine buffer back to MIDP */
void
JSR239_putWindowContents(jobject graphicsHandle,
jint delta_height,
JSR239_Pixmap *src,
jint clipX, jint clipY,
jint clipWidth, jint clipHeight,
jint flipY) {
void* s;
void* d;
KNI_StartHandles(1);
KNI_DeclareHandle(GraphicsClassHandle);
#ifdef DEBUG
printf("JSR239_putWindowContents >>\n");
#endif
KNI_FindClass("javax/microedition/lcdui/Graphics", GraphicsClassHandle);
if (!KNI_IsInstanceOf(graphicsHandle, GraphicsClassHandle)) {
#ifdef DEBUG
printf("JSR239_putWindowContents only implemented for graphicsHandle "
"instanceof Graphics!\n");
#endif
} else {
gxj_screen_buffer sbuf;
gxj_screen_buffer* gimg;
// Obtain the dimensions of the destination.
// Revisit: multiple displays support. Obtain Id of display render surfane is
// bound to. Consider recalculations when display got changed.
int displayId = lcdlf_get_current_hardwareId();
jint dest_width = lcdlf_get_screen_width(displayId);
jint dest_height = lcdlf_get_screen_height(displayId);
jint min_height = 0;
gxj_pixel_type* srcPtr;
gxj_pixel_type* dstPtr;
gimg = GXJ_GET_GRAPHICS_SCREEN_BUFFER(graphicsHandle, &sbuf);
if (gimg != NULL) {
dest_width = gimg->width;
dest_height= gimg->height;
}
/* src->screen_buffer is an output of copyToScreenBuffer function. */
s = (void*)src->screen_buffer;
d = (void*)getGraphicsBuffer(graphicsHandle);
min_height = (dest_height > src->height) ? src->height : dest_height;
#ifdef DEBUG
printf("JSR239_putWindowContents:\n");
printf(" src = %d\n", src->pixels);
printf(" src Bpp = %d\n", src->pixelBytes);
printf(" src width = %d\n", src->width);
printf(" src height = %d\n", src->height);
printf(" min height = %d\n", min_height);
printf(" dst = %d\n", d);
printf(" dst width = %d\n", clipWidth);
printf(" dst height = %d\n", clipHeight);
#endif
srcPtr = (gxj_pixel_type *)s;
dstPtr = (gxj_pixel_type *)d;
if ((dest_width * min_height <= src->width * src->height) &&
(sizeof(gxj_pixel_type) == 2)) {
/* Source data must be in 16bit 565 format. */
JSR239_memcpy(s, d,
dest_width * min_height * sizeof(gxj_pixel_type));
/* IMPL_NOTE: get clip sizes into account. */
copyToScreenBuffer(src, delta_height,
clipX, clipY, clipWidth, clipHeight,
dest_width, dest_height,
flipY);
/* Source data must be in 16bit 565 format. */
JSR239_memcpy(d, s,
dest_width * min_height * sizeof(gxj_pixel_type));
} else {
#ifdef DEBUG
printf("JSR239: offscreen buffer data is incorrect.\n");
#endif
}
}
#ifdef DEBUG
printf("JSR239_putWindowContents <<\n");
#endif
KNI_EndHandles();
}