/*
* Class: org_coolreader_crengine_Engine
* Method: drawBookCoverInternal
* Signature: (Landroid/graphics/Bitmap;[BLjava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;II)V
*/
JNIEXPORT void JNICALL Java_org_coolreader_crengine_Engine_drawBookCoverInternal
(JNIEnv * _env, jobject _engine, jobject bitmap, jbyteArray _data, jstring _fontFace, jstring _title, jstring _authors, jstring _seriesName, jint seriesNumber, jint bpp)
{
CRJNIEnv env(_env);
//CRLog::debug("drawBookCoverInternal called");
lString8 fontFace = UnicodeToUtf8(env.fromJavaString(_fontFace));
lString16 title = env.fromJavaString(_title);
lString16 authors = env.fromJavaString(_authors);
lString16 seriesName = env.fromJavaString(_seriesName);
LVStreamRef stream;
LVImageSourceRef image;
if (_data != NULL && _env->GetArrayLength(_data) > 0) {
stream = env.jbyteArrayToStream(_data);
if (!stream.isNull())
image = LVCreateStreamImageSource(stream);
}
LVDrawBuf * drawbuf = BitmapAccessorInterface::getInstance()->lock(_env, bitmap);
if (drawbuf != NULL) {
int factor = 1;
int dx = drawbuf->GetWidth();
int dy = drawbuf->GetHeight();
int MIN_WIDTH = 300;
int MIN_HEIGHT = 400;
if (dx < MIN_WIDTH || dy < MIN_HEIGHT) {
if (dx * 2 < MIN_WIDTH || dy * 2 < MIN_HEIGHT) {
dx *= 3;
dy *= 3;
factor = 3;
} else {
dx *= 2;
dy *= 2;
factor = 2;
}
}
LVDrawBuf * drawbuf2 = drawbuf;
if (factor > 1)
drawbuf2 = new LVColorDrawBuf(dx, dy, drawbuf->GetBitsPerPixel());
if (bpp >= 16) {
// native color resolution
LVDrawBookCover(*drawbuf2, image, fontFace, title, authors, seriesName, seriesNumber);
} else {
LVGrayDrawBuf grayBuf(drawbuf2->GetWidth(), drawbuf2->GetHeight(), bpp);
LVDrawBookCover(grayBuf, image, fontFace, title, authors, seriesName, seriesNumber);
grayBuf.DrawTo(drawbuf2, 0, 0, 0, NULL);
}
if (factor > 1) {
drawbuf->DrawRescaled(drawbuf2, 0, 0, drawbuf->GetWidth(), drawbuf->GetHeight(), 0);
delete drawbuf2;
}
//CRLog::trace("getPageImageInternal calling bitmap->unlock");
BitmapAccessorInterface::getInstance()->unlock(_env, bitmap, drawbuf);
} else {
CRLog::error("bitmap accessor is invalid");
}
//CRLog::debug("drawBookCoverInternal finished");
}
bool getPageImageTexture(LVDocView * docview, int width, int height, int bpp, PageImageTextureInfo & ti) {
ti.textureId = 0;
ti.dx = width;
ti.dy = height;
ti.tdx = nextPOT(width);
ti.tdy = nextPOT(height);
LVColorDrawBuf buf(ti.tdx, ti.tdy, 32);
if (bpp >= 16) {
docview->Draw(buf, false);
} else {
LVGrayDrawBuf grayBuf(width, height, bpp);
docview->Draw(grayBuf);
grayBuf.DrawTo(&buf, 0, 0, 0, NULL);
}
ti.textureId = crCreateTextureRGBA(ti.tdx, ti.tdy, (lUInt32*)buf.GetScanLine(0));
return ti.textureId != 0;
}
