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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 <gui/Surface.h>
     22 #include <android_runtime/android_view_Surface.h>
     23 #include <android_runtime/android_graphics_SurfaceTexture.h>
     24 
     25 using namespace android;
     26 
     27 ANativeWindow* ANativeWindow_fromSurface(JNIEnv* env, jobject surface) {
     28     sp<ANativeWindow> win = android_view_Surface_getNativeWindow(env, surface);
     29     if (win != NULL) {
     30         win->incStrong((void*)ANativeWindow_acquire);
     31     }
     32     return win.get();
     33 }
     34 
     35 void ANativeWindow_acquire(ANativeWindow* window) {
     36     window->incStrong((void*)ANativeWindow_acquire);
     37 }
     38 
     39 void ANativeWindow_release(ANativeWindow* window) {
     40     window->decStrong((void*)ANativeWindow_acquire);
     41 }
     42 
     43 static int32_t getWindowProp(ANativeWindow* window, int what) {
     44     int value;
     45     int res = window->query(window, what, &value);
     46     return res < 0 ? res : value;
     47 }
     48 
     49 int32_t ANativeWindow_getWidth(ANativeWindow* window) {
     50     return getWindowProp(window, NATIVE_WINDOW_WIDTH);
     51 }
     52 
     53 int32_t ANativeWindow_getHeight(ANativeWindow* window) {
     54     return getWindowProp(window, NATIVE_WINDOW_HEIGHT);
     55 }
     56 
     57 int32_t ANativeWindow_getFormat(ANativeWindow* window) {
     58     return getWindowProp(window, NATIVE_WINDOW_FORMAT);
     59 }
     60 
     61 int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window, int32_t width,
     62         int32_t height, int32_t format) {
     63     int32_t err = native_window_set_buffers_format(window, format);
     64     if (!err) {
     65         err = native_window_set_buffers_user_dimensions(window, width, height);
     66         if (!err) {
     67             int mode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
     68             if (width && height) {
     69                 mode = NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW;
     70             }
     71             err = native_window_set_scaling_mode(window, mode);
     72          }
     73     }
     74     return err;
     75 }
     76 
     77 int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
     78         ARect* inOutDirtyBounds) {
     79     return window->perform(window, NATIVE_WINDOW_LOCK, outBuffer, inOutDirtyBounds);
     80 }
     81 
     82 int32_t ANativeWindow_unlockAndPost(ANativeWindow* window) {
     83     return window->perform(window, NATIVE_WINDOW_UNLOCK_AND_POST);
     84 }
     85