1 /*
2  * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 only, as
7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 
26 #include "GraphicsPrimitiveMgr.h"
27 #include "Region.h"
28 
29 #include "sun_java2d_loops_Blit.h"
30 
31 /*
32  * Class:     sun_java2d_loops_Blit
33  * Method:    Blit
34  * Signature: (Lsun/java2d/SurfaceData;Lsun/java2d/SurfaceData;Ljava/awt/Composite;IIIIII)V
35  */
36 JNIEXPORT void JNICALL
Java_sun_java2d_loops_Blit_Blit(JNIEnv * env,jobject self,jobject srcData,jobject dstData,jobject comp,jobject clip,jint srcx,jint srcy,jint dstx,jint dsty,jint width,jint height)37 Java_sun_java2d_loops_Blit_Blit
38     (JNIEnv *env, jobject self,
39      jobject srcData, jobject dstData, jobject comp, jobject clip,
40      jint srcx, jint srcy, jint dstx, jint dsty, jint width, jint height)
41 {
42     SurfaceDataOps *srcOps;
43     SurfaceDataOps *dstOps;
44     SurfaceDataRasInfo srcInfo;
45     SurfaceDataRasInfo dstInfo;
46     NativePrimitive *pPrim;
47     CompositeInfo compInfo;
48     RegionData clipInfo;
49     jint dstFlags;
50 
51     pPrim = GetNativePrim(env, self);
52     if (pPrim == NULL) {
53         return;
54     }
55     if (pPrim->pCompType->getCompInfo != NULL) {
56         (*pPrim->pCompType->getCompInfo)(env, &compInfo, comp);
57     }
58     if (Region_GetInfo(env, clip, &clipInfo)) {
59         return;
60     }
61 
62     srcOps = SurfaceData_GetOps(env, srcData);
63     if (srcOps == 0) {
64         return;
65     }
66     dstOps = SurfaceData_GetOps(env, dstData);
67     if (dstOps == 0) {
68         return;
69     }
70 
71     srcInfo.bounds.x1 = srcx;
72     srcInfo.bounds.y1 = srcy;
73     srcInfo.bounds.x2 = srcx + width;
74     srcInfo.bounds.y2 = srcy + height;
75     dstInfo.bounds.x1 = dstx;
76     dstInfo.bounds.y1 = dsty;
77     dstInfo.bounds.x2 = dstx + width;
78     dstInfo.bounds.y2 = dsty + height;
79     srcx -= dstx;
80     srcy -= dsty;
81     SurfaceData_IntersectBounds(&dstInfo.bounds, &clipInfo.bounds);
82     if (srcOps->Lock(env, srcOps, &srcInfo, pPrim->srcflags) != SD_SUCCESS) {
83         return;
84     }
85 
86     dstFlags = pPrim->dstflags;
87     if (!Region_IsRectangular(&clipInfo)) {
88         dstFlags |= SD_LOCK_PARTIAL_WRITE;
89     }
90     if (dstOps->Lock(env, dstOps, &dstInfo, dstFlags) != SD_SUCCESS) {
91         SurfaceData_InvokeUnlock(env, srcOps, &srcInfo);
92         return;
93     }
94     SurfaceData_IntersectBlitBounds(&dstInfo.bounds, &srcInfo.bounds,
95                                     srcx, srcy);
96     Region_IntersectBounds(&clipInfo, &dstInfo.bounds);
97 
98     if (!Region_IsEmpty(&clipInfo)) {
99         srcOps->GetRasInfo(env, srcOps, &srcInfo);
100         dstOps->GetRasInfo(env, dstOps, &dstInfo);
101         if (srcInfo.rasBase && dstInfo.rasBase) {
102             SurfaceDataBounds span;
103             jint savesx = srcInfo.bounds.x1;
104             jint savedx = dstInfo.bounds.x1;
105             Region_StartIteration(env, &clipInfo);
106             while (Region_NextIteration(&clipInfo, &span)) {
107                 void *pSrc = PtrCoord(srcInfo.rasBase,
108                                       srcx + span.x1, srcInfo.pixelStride,
109                                       srcy + span.y1, srcInfo.scanStride);
110                 void *pDst = PtrCoord(dstInfo.rasBase,
111                                       span.x1, dstInfo.pixelStride,
112                                       span.y1, dstInfo.scanStride);
113                 /*
114                  * Fix for 4804375
115                  * REMIND: There should probably be a better
116                  * way to give the span coordinates to the
117                  * inner loop.  This is only really needed
118                  * for the 1, 2, and 4 bit loops.
119                  */
120                 srcInfo.bounds.x1 = srcx + span.x1;
121                 dstInfo.bounds.x1 = span.x1;
122                 (*pPrim->funcs.blit)(pSrc, pDst,
123                                      span.x2 - span.x1, span.y2 - span.y1,
124                                      &srcInfo, &dstInfo, pPrim, &compInfo);
125             }
126             Region_EndIteration(env, &clipInfo);
127             srcInfo.bounds.x1 = savesx;
128             dstInfo.bounds.x1 = savedx;
129         }
130         SurfaceData_InvokeRelease(env, dstOps, &dstInfo);
131         SurfaceData_InvokeRelease(env, srcOps, &srcInfo);
132     }
133     SurfaceData_InvokeUnlock(env, dstOps, &dstInfo);
134     SurfaceData_InvokeUnlock(env, srcOps, &srcInfo);
135 }
136