frameworks/base/native/android/native_window.cpp

   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 }