include/android_stub/nativebase/nativebase.h

   1 /*
   2  * Copyright (C) 2017 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 #pragma once
  18
  19 #include <stdint.h>
  20 #include <stdbool.h>
  21 #include <string.h>
  22 #include <sys/cdefs.h>
  23 #include <system/graphics-base.h>
  24 #include <cutils/native_handle.h>
  25
  26 __BEGIN_DECLS
  27
  28 #ifdef __cplusplus
  29 #define ANDROID_NATIVE_UNSIGNED_CAST(x) static_cast<unsigned int>(x)
  30 #else
  31 #define ANDROID_NATIVE_UNSIGNED_CAST(x) ((unsigned int)(x))
  32 #endif
  33
  34 #define ANDROID_NATIVE_MAKE_CONSTANT(a,b,c,d)  \
  35     ((ANDROID_NATIVE_UNSIGNED_CAST(a) << 24) | \
  36      (ANDROID_NATIVE_UNSIGNED_CAST(b) << 16) | \
  37      (ANDROID_NATIVE_UNSIGNED_CAST(c) <<  8) | \
  38      (ANDROID_NATIVE_UNSIGNED_CAST(d)))
  39
  40 #define ANDROID_NATIVE_BUFFER_MAGIC     ANDROID_NATIVE_MAKE_CONSTANT('_','b','f','r')
  41
  42
  43 typedef struct android_native_base_t
  44 {
  45     /* a magic value defined by the actual EGL native type */
  46     int magic;
  47
  48     /* the sizeof() of the actual EGL native type */
  49     int version;
  50
  51     void* reserved[4];
  52
  53     /* reference-counting interface */
  54     void (*incRef)(struct android_native_base_t* base);
  55     void (*decRef)(struct android_native_base_t* base);
  56 } android_native_base_t;
  57
  58 typedef struct android_native_rect_t
  59 {
  60     int32_t left;
  61     int32_t top;
  62     int32_t right;
  63     int32_t bottom;
  64 } android_native_rect_t;
  65
  66 typedef struct ANativeWindowBuffer
  67 {
  68 #ifdef __cplusplus
  69     ANativeWindowBuffer() {
  70         common.magic = ANDROID_NATIVE_BUFFER_MAGIC;
  71         common.version = sizeof(ANativeWindowBuffer);
  72         memset(common.reserved, 0, sizeof(common.reserved));
  73     }
  74
  75     // Implement the methods that sp<ANativeWindowBuffer> expects so that it
  76     // can be used to automatically refcount ANativeWindowBuffer's.
  77     void incStrong(const void* /*id*/) const {
  78         common.incRef(const_cast<android_native_base_t*>(&common));
  79     }
  80     void decStrong(const void* /*id*/) const {
  81         common.decRef(const_cast<android_native_base_t*>(&common));
  82     }
  83 #endif
  84
  85     struct android_native_base_t common;
  86
  87     int width;
  88     int height;
  89     int stride;
  90     int format;
  91     int usage_deprecated;
  92     uintptr_t layerCount;
  93
  94     void* reserved[1];
  95
  96     const native_handle_t* handle;
  97     uint64_t usage;
  98
  99     // we needed extra space for storing the 64-bits usage flags
 100     // the number of slots to use from reserved_proc depends on the
 101     // architecture.
 102     void* reserved_proc[8 - (sizeof(uint64_t) / sizeof(void*))];
 103 } ANativeWindowBuffer_t;
 104
 105 typedef struct ANativeWindowBuffer ANativeWindowBuffer;
 106
 107 // Old typedef for backwards compatibility.
 108 typedef ANativeWindowBuffer_t android_native_buffer_t;
 109
 110 __END_DECLS