native_window.cpp revision 809820e28bdeb13a7625e0ce80e0dc2e2d76929f 
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#include <android_runtime/android_graphics_SurfaceTexture.h>
24
25using namespace android;
26
27ANativeWindow* ANativeWindow_fromSurface(JNIEnv* env, jobject surface) {
28    sp<ANativeWindow> win = android_Surface_getNativeWindow(env, surface);
29    if (win != NULL) {
30        win->incStrong((void*)ANativeWindow_acquire);
31    }
32    return win.get();
33}
34
35void ANativeWindow_acquire(ANativeWindow* window) {
36    window->incStrong((void*)ANativeWindow_acquire);
37}
38
39void ANativeWindow_release(ANativeWindow* window) {
40    window->decStrong((void*)ANativeWindow_acquire);
41}
42
43static 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
49int32_t ANativeWindow_getWidth(ANativeWindow* window) {
50    return getWindowProp(window, NATIVE_WINDOW_WIDTH);
51}
52
53int32_t ANativeWindow_getHeight(ANativeWindow* window) {
54    return getWindowProp(window, NATIVE_WINDOW_HEIGHT);
55}
56
57int32_t ANativeWindow_getFormat(ANativeWindow* window) {
58    return getWindowProp(window, NATIVE_WINDOW_FORMAT);
59}
60
61int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window, int32_t width,
62        int32_t height, int32_t format) {
63    int32_t err = native_window_set_buffers_geometry(window, width, height, format);
64    if (!err) {
65        int mode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
66        if (width && height) {
67            mode = NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW;
68        }
69        err = native_window_set_scaling_mode(window, mode);
70    }
71    return err;
72}
73
74int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
75        ARect* inOutDirtyBounds) {
76    return window->perform(window, NATIVE_WINDOW_LOCK, outBuffer, inOutDirtyBounds);
77}
78
79int32_t ANativeWindow_unlockAndPost(ANativeWindow* window) {
80    return window->perform(window, NATIVE_WINDOW_UNLOCK_AND_POST);
81}
82