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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "Surface"
     18 #include <utils/Log.h>
     19 
     20 #include <android/native_window_jni.h>
     21 #include <surfaceflinger/Surface.h>
     22 #include <android_runtime/android_view_Surface.h>
     23 
     24 using namespace android;
     25 
     26 ANativeWindow* ANativeWindow_fromSurface(JNIEnv* env, jobject surface) {
     27     sp<ANativeWindow> win = android_Surface_getNativeWindow(env, surface);
     28     if (win != NULL) {
     29         win->incStrong((void*)ANativeWindow_acquire);
     30     }
     31     return win.get();
     32 }
     33 
     34 void ANativeWindow_acquire(ANativeWindow* window) {
     35     window->incStrong((void*)ANativeWindow_acquire);
     36 }
     37 
     38 void ANativeWindow_release(ANativeWindow* window) {
     39     window->decStrong((void*)ANativeWindow_acquire);
     40 }
     41 
     42 static int32_t getWindowProp(ANativeWindow* window, int what) {
     43     int value;
     44     int res = window->query(window, what, &value);
     45     return res < 0 ? res : value;
     46 }
     47 
     48 int32_t ANativeWindow_getWidth(ANativeWindow* window) {
     49     return getWindowProp(window, NATIVE_WINDOW_WIDTH);
     50 }
     51 
     52 int32_t ANativeWindow_getHeight(ANativeWindow* window) {
     53     return getWindowProp(window, NATIVE_WINDOW_HEIGHT);
     54 }
     55 
     56 int32_t ANativeWindow_getFormat(ANativeWindow* window) {
     57     return getWindowProp(window, NATIVE_WINDOW_FORMAT);
     58 }
     59 
     60 int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window, int32_t width,
     61         int32_t height, int32_t format) {
     62     native_window_set_buffers_geometry(window, width, height, format);
     63     return 0;
     64 }
     65 
     66 int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
     67         ARect* inOutDirtyBounds) {
     68     Region dirtyRegion;
     69     Region* dirtyParam = NULL;
     70     if (inOutDirtyBounds != NULL) {
     71         dirtyRegion.set(*(Rect*)inOutDirtyBounds);
     72         dirtyParam = &dirtyRegion;
     73     }
     74 
     75     Surface::SurfaceInfo info;
     76     status_t res = static_cast<Surface*>(window)->lock(&info, dirtyParam);
     77     if (res != OK) {
     78         return -1;
     79     }
     80 
     81     outBuffer->width = (int32_t)info.w;
     82     outBuffer->height = (int32_t)info.h;
     83     outBuffer->stride = (int32_t)info.s;
     84     outBuffer->format = (int32_t)info.format;
     85     outBuffer->bits = info.bits;
     86 
     87     if (inOutDirtyBounds != NULL) {
     88         *inOutDirtyBounds = dirtyRegion.getBounds();
     89     }
     90 
     91     return 0;
     92 }
     93 
     94 int32_t ANativeWindow_unlockAndPost(ANativeWindow* window) {
     95     status_t res = static_cast<Surface*>(window)->unlockAndPost();
     96     return res == android::OK ? 0 : -1;
     97 }
     98