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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 #include <string.h>
     22 
     23 #include <hardware/gralloc.h>
     24 #include <system/window.h>
     25 
     26 // ---------------------------------------------------------------------------
     27 
     28 /* FIXME: this is legacy for pixmaps */
     29 typedef struct egl_native_pixmap_t
     30 {
     31     int32_t     version;    /* must be 32 */
     32     int32_t     width;
     33     int32_t     height;
     34     int32_t     stride;
     35     uint8_t*    data;
     36     uint8_t     format;
     37     uint8_t     rfu[3];
     38     union {
     39         uint32_t    compressedFormat;
     40         int32_t     vstride;
     41     };
     42     int32_t     reserved;
     43 } egl_native_pixmap_t;
     44 
     45 /*****************************************************************************/
     46 
     47 #ifdef __cplusplus
     48 
     49 #include <utils/RefBase.h>
     50 
     51 namespace android {
     52 
     53 /*
     54  * This helper class turns a ANativeXXX object type into a C++
     55  * reference-counted object; with proper type conversions.
     56  */
     57 template <typename NATIVE_TYPE, typename TYPE, typename REF>
     58 class ANativeObjectBase : public NATIVE_TYPE, public REF
     59 {
     60 public:
     61     // Disambiguate between the incStrong in REF and NATIVE_TYPE
     62     void incStrong(const void* id) const {
     63         REF::incStrong(id);
     64     }
     65     void decStrong(const void* id) const {
     66         REF::decStrong(id);
     67     }
     68 
     69 protected:
     70     typedef ANativeObjectBase<NATIVE_TYPE, TYPE, REF> BASE;
     71     ANativeObjectBase() : NATIVE_TYPE(), REF() {
     72         NATIVE_TYPE::common.incRef = incRef;
     73         NATIVE_TYPE::common.decRef = decRef;
     74     }
     75     static inline TYPE* getSelf(NATIVE_TYPE* self) {
     76         return static_cast<TYPE*>(self);
     77     }
     78     static inline TYPE const* getSelf(NATIVE_TYPE const* self) {
     79         return static_cast<TYPE const *>(self);
     80     }
     81     static inline TYPE* getSelf(android_native_base_t* base) {
     82         return getSelf(reinterpret_cast<NATIVE_TYPE*>(base));
     83     }
     84     static inline TYPE const * getSelf(android_native_base_t const* base) {
     85         return getSelf(reinterpret_cast<NATIVE_TYPE const*>(base));
     86     }
     87     static void incRef(android_native_base_t* base) {
     88         ANativeObjectBase* self = getSelf(base);
     89         self->incStrong(self);
     90     }
     91     static void decRef(android_native_base_t* base) {
     92         ANativeObjectBase* self = getSelf(base);
     93         self->decStrong(self);
     94     }
     95 };
     96 
     97 } // namespace android
     98 #endif // __cplusplus
     99 
    100 /*****************************************************************************/
    101 
    102 #endif /* ANDROID_ANDROID_NATIVES_H */
    103