native_window.cpp revision 09d7ed7b395d66be97c6bcb052039f5c0dce646c 
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_ParcelSurfaceTexture.h>
24#include <android_runtime/android_graphics_SurfaceTexture.h>
25
26using namespace android;
27
28ANativeWindow* ANativeWindow_fromSurface(JNIEnv* env, jobject surface) {
29    sp<ANativeWindow> win;
30    if (android_Surface_isInstanceOf(env, surface)) {
31        win = android_Surface_getNativeWindow(env, surface);
32    } else if (android_SurfaceTexture_isInstanceOf(env, surface)) {
33        win = android_SurfaceTexture_getNativeWindow(env, surface);
34    } else if (android_ParcelSurfaceTexture_isInstanceOf(env, surface)) {
35        win = android_ParcelSurfaceTexture_getNativeWindow(env, surface);
36    }
37    if (win != NULL) {
38        win->incStrong((void*)ANativeWindow_acquire);
39    }
40    return win.get();
41}
42
43ANativeWindow* ANativeWindow_fromSurfaceTexture(JNIEnv* env, jobject surfaceTexture) {
44    sp<ANativeWindow> win = android_SurfaceTexture_getNativeWindow(env, surfaceTexture);
45    if (win != NULL) {
46        win->incStrong((void*)ANativeWindow_acquire);
47    }
48    return win.get();
49}
50
51void ANativeWindow_acquire(ANativeWindow* window) {
52    window->incStrong((void*)ANativeWindow_acquire);
53}
54
55void ANativeWindow_release(ANativeWindow* window) {
56    window->decStrong((void*)ANativeWindow_acquire);
57}
58
59static int32_t getWindowProp(ANativeWindow* window, int what) {
60    int value;
61    int res = window->query(window, what, &value);
62    return res < 0 ? res : value;
63}
64
65int32_t ANativeWindow_getWidth(ANativeWindow* window) {
66    return getWindowProp(window, NATIVE_WINDOW_WIDTH);
67}
68
69int32_t ANativeWindow_getHeight(ANativeWindow* window) {
70    return getWindowProp(window, NATIVE_WINDOW_HEIGHT);
71}
72
73int32_t ANativeWindow_getFormat(ANativeWindow* window) {
74    return getWindowProp(window, NATIVE_WINDOW_FORMAT);
75}
76
77int32_t ANativeWindow_setBuffersGeometry(ANativeWindow* window, int32_t width,
78        int32_t height, int32_t format) {
79    int32_t err = native_window_set_buffers_geometry(window, width, height, format);
80    if (!err) {
81        int mode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
82        if (width && height) {
83            mode = NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW;
84        }
85        err = native_window_set_scaling_mode(window, mode);
86    }
87    return err;
88}
89
90int32_t ANativeWindow_lock(ANativeWindow* window, ANativeWindow_Buffer* outBuffer,
91        ARect* inOutDirtyBounds) {
92    return window->perform(window, NATIVE_WINDOW_LOCK, outBuffer, inOutDirtyBounds);
93}
94
95int32_t ANativeWindow_unlockAndPost(ANativeWindow* window) {
96    return window->perform(window, NATIVE_WINDOW_UNLOCK_AND_POST);
97}
98