| /* |
| * Copyright (c) 2005, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include <jni.h> |
| #include <jlong.h> |
| #include <jni_util.h> |
| #include "sun_java2d_pipe_BufferedRenderPipe.h" |
| #include "sun_java2d_pipe_BufferedOpCodes.h" |
| #include "SpanIterator.h" |
| #include "Trace.h" |
| |
| /* The "header" consists of a jint opcode and a jint span count value */ |
| #define INTS_PER_HEADER 2 |
| #define BYTES_PER_HEADER 8 |
| |
| #define BYTES_PER_SPAN sun_java2d_pipe_BufferedRenderPipe_BYTES_PER_SPAN |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_java2d_pipe_BufferedRenderPipe_fillSpans |
| (JNIEnv *env, jobject pipe, |
| jobject rq, jlong buf, |
| jint bpos, jint limit, |
| jobject si, jlong pIterator, |
| jint transx, jint transy) |
| { |
| SpanIteratorFuncs *pFuncs = (SpanIteratorFuncs *)jlong_to_ptr(pIterator); |
| void *srData; |
| jint spanbox[4]; |
| jint spanCount = 0; |
| jint remainingBytes, remainingSpans; |
| unsigned char *bbuf; |
| jint *ibuf; |
| jint ipos; |
| jboolean hasException; |
| |
| J2dTraceLn2(J2D_TRACE_INFO, |
| "BufferedRenderPipe_fillSpans: bpos=%d limit=%d", |
| bpos, limit); |
| |
| if (JNU_IsNull(env, rq)) { |
| J2dRlsTraceLn(J2D_TRACE_ERROR, |
| "BufferedRenderPipe_fillSpans: rq is null"); |
| return bpos; |
| } |
| |
| if (JNU_IsNull(env, si)) { |
| J2dRlsTraceLn(J2D_TRACE_ERROR, |
| "BufferedRenderPipe_fillSpans: span iterator is null"); |
| return bpos; |
| } |
| |
| if (pFuncs == NULL) { |
| J2dRlsTraceLn(J2D_TRACE_ERROR, |
| "BufferedRenderPipe_fillSpans: native iterator not supplied"); |
| return bpos; |
| } |
| |
| bbuf = (unsigned char *)jlong_to_ptr(buf); |
| if (bbuf == NULL) { |
| J2dRlsTraceLn(J2D_TRACE_ERROR, |
| "BufferedRenderPipe_fillSpans: cannot get direct buffer address"); |
| return bpos; |
| } |
| |
| // adjust the int pointer to the current buffer position |
| ibuf = (jint *)(bbuf + bpos); |
| |
| // start new operation |
| ibuf[0] = sun_java2d_pipe_BufferedOpCodes_FILL_SPANS; |
| ibuf[1] = 0; // placeholder for the span count |
| |
| // skip the opcode and span count |
| ipos = INTS_PER_HEADER; |
| bpos += BYTES_PER_HEADER; // skip the opcode and span count |
| |
| remainingBytes = limit - bpos; |
| remainingSpans = remainingBytes / BYTES_PER_SPAN; |
| |
| srData = (*pFuncs->open)(env, si); |
| while ((*pFuncs->nextSpan)(srData, spanbox)) { |
| if (remainingSpans == 0) { |
| // fill in span count |
| ibuf[1] = spanCount; |
| |
| // flush the queue |
| JNU_CallMethodByName(env, &hasException, rq, "flushNow", "(I)V", bpos); |
| if (hasException) { |
| break; |
| } |
| |
| // now start a new operation |
| ibuf = (jint *)bbuf; |
| ibuf[0] = sun_java2d_pipe_BufferedOpCodes_FILL_SPANS; |
| ibuf[1] = 0; // placeholder for the span count |
| |
| // skip the opcode and span count |
| ipos = INTS_PER_HEADER; |
| bpos = BYTES_PER_HEADER; |
| |
| // calculate new limits |
| remainingBytes = limit - bpos; |
| remainingSpans = remainingBytes / BYTES_PER_SPAN; |
| spanCount = 0; |
| } |
| |
| // enqueue span |
| ibuf[ipos++] = spanbox[0] + transx; // x1 |
| ibuf[ipos++] = spanbox[1] + transy; // y1 |
| ibuf[ipos++] = spanbox[2] + transx; // x2 |
| ibuf[ipos++] = spanbox[3] + transy; // y2 |
| |
| // update positions |
| bpos += BYTES_PER_SPAN; |
| spanCount++; |
| remainingSpans--; |
| } |
| (*pFuncs->close)(env, srData); |
| |
| // fill in span count |
| ibuf[1] = spanCount; |
| |
| // return the current byte position |
| return bpos; |
| } |