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      1 /*
      2  * Copyright (C) 2009 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 #ifndef ANDROID_ANDROID_NATIVES_H
     18 #define ANDROID_ANDROID_NATIVES_H
     19 
     20 #include <sys/types.h>
     21 
     22 #include <system/window.h>
     23 
     24 // ---------------------------------------------------------------------------
     25 
     26 /* FIXME: this is legacy for pixmaps */
     27 typedef struct egl_native_pixmap_t
     28 {
     29     int32_t     version;    /* must be 32 */
     30     int32_t     width;
     31     int32_t     height;
     32     int32_t     stride;
     33     uint8_t*    data;
     34     uint8_t     format;
     35     uint8_t     rfu[3];
     36     union {
     37         uint32_t    compressedFormat;
     38         int32_t     vstride;
     39     };
     40     int32_t     reserved;
     41 } egl_native_pixmap_t;
     42 
     43 /*****************************************************************************/
     44 
     45 #ifdef __cplusplus
     46 
     47 #include <utils/RefBase.h>
     48 
     49 namespace android {
     50 
     51 /*
     52  * This helper class turns a ANativeXXX object type into a C++
     53  * reference-counted object; with proper type conversions.
     54  */
     55 template <typename NATIVE_TYPE, typename TYPE, typename REF>
     56 class ANativeObjectBase : public NATIVE_TYPE, public REF
     57 {
     58 public:
     59     // Disambiguate between the incStrong in REF and NATIVE_TYPE
     60     void incStrong(const void* id) const {
     61         REF::incStrong(id);
     62     }
     63     void decStrong(const void* id) const {
     64         REF::decStrong(id);
     65     }
     66 
     67 protected:
     68     typedef ANativeObjectBase<NATIVE_TYPE, TYPE, REF> BASE;
     69     ANativeObjectBase() : NATIVE_TYPE(), REF() {
     70         NATIVE_TYPE::common.incRef = incRef;
     71         NATIVE_TYPE::common.decRef = decRef;
     72     }
     73     static inline TYPE* getSelf(NATIVE_TYPE* self) {
     74         return static_cast<TYPE*>(self);
     75     }
     76     static inline TYPE const* getSelf(NATIVE_TYPE const* self) {
     77         return static_cast<TYPE const *>(self);
     78     }
     79     static inline TYPE* getSelf(android_native_base_t* base) {
     80         return getSelf(reinterpret_cast<NATIVE_TYPE*>(base));
     81     }
     82     static inline TYPE const * getSelf(android_native_base_t const* base) {
     83         return getSelf(reinterpret_cast<NATIVE_TYPE const*>(base));
     84     }
     85     static void incRef(android_native_base_t* base) {
     86         ANativeObjectBase* self = getSelf(base);
     87         self->incStrong(self);
     88     }
     89     static void decRef(android_native_base_t* base) {
     90         ANativeObjectBase* self = getSelf(base);
     91         self->decStrong(self);
     92     }
     93 };
     94 
     95 } // namespace android
     96 #endif // __cplusplus
     97 
     98 /*****************************************************************************/
     99 
    100 #endif /* ANDROID_ANDROID_NATIVES_H */
    101