1 #ifndef ANDROID_DVR_DELETER_H_ 2 #define ANDROID_DVR_DELETER_H_ 3 4 #include <sys/cdefs.h> 5 6 #include <memory> 7 8 // Header-only C++ helper to delete opaque DVR objects. 9 10 __BEGIN_DECLS 11 12 // Use forward declarations to avoid dependency on other headers. 13 typedef struct DvrBuffer DvrBuffer; 14 typedef struct DvrReadBuffer DvrReadBuffer; 15 typedef struct DvrWriteBuffer DvrWriteBuffer; 16 typedef struct DvrReadBufferQueue DvrReadBufferQueue; 17 typedef struct DvrWriteBufferQueue DvrWriteBufferQueue; 18 typedef struct DvrDisplayManager DvrDisplayManager; 19 typedef struct DvrSurfaceState DvrSurfaceState; 20 typedef struct DvrSurface DvrSurface; 21 typedef struct DvrHwcClient DvrHwcClient; 22 typedef struct DvrHwcFrame DvrHwcFrame; 23 typedef struct DvrVSyncClient DvrVSyncClient; 24 25 void dvrBufferDestroy(DvrBuffer* buffer); 26 void dvrReadBufferDestroy(DvrReadBuffer* read_buffer); 27 void dvrWriteBufferDestroy(DvrWriteBuffer* write_buffer); 28 void dvrReadBufferQueueDestroy(DvrReadBufferQueue* read_queue); 29 void dvrWriteBufferQueueDestroy(DvrWriteBufferQueue* write_queue); 30 void dvrDisplayManagerDestroy(DvrDisplayManager* client); 31 void dvrSurfaceStateDestroy(DvrSurfaceState* surface_state); 32 void dvrSurfaceDestroy(DvrSurface* surface); 33 void dvrHwcClientDestroy(DvrHwcClient* client); 34 void dvrHwcFrameDestroy(DvrHwcFrame* frame); 35 void dvrVSyncClientDestroy(DvrVSyncClient* client); 36 37 __END_DECLS 38 39 // Avoid errors if this header is included in C code. 40 #if defined(__cplusplus) 41 42 namespace android { 43 namespace dvr { 44 45 // Universal DVR object deleter. May be passed to smart pointer types to handle 46 // deletion of DVR API objects. 47 struct DvrObjectDeleter { 48 void operator()(DvrBuffer* p) { dvrBufferDestroy(p); } 49 void operator()(DvrReadBuffer* p) { dvrReadBufferDestroy(p); } 50 void operator()(DvrWriteBuffer* p) { dvrWriteBufferDestroy(p); } 51 void operator()(DvrReadBufferQueue* p) { dvrReadBufferQueueDestroy(p); } 52 void operator()(DvrWriteBufferQueue* p) { dvrWriteBufferQueueDestroy(p); } 53 void operator()(DvrDisplayManager* p) { dvrDisplayManagerDestroy(p); } 54 void operator()(DvrSurfaceState* p) { dvrSurfaceStateDestroy(p); } 55 void operator()(DvrSurface* p) { dvrSurfaceDestroy(p); } 56 void operator()(DvrHwcClient* p) { dvrHwcClientDestroy(p); } 57 void operator()(DvrHwcFrame* p) { dvrHwcFrameDestroy(p); } 58 void operator()(DvrVSyncClient* p) { dvrVSyncClientDestroy(p); } 59 }; 60 61 // Helper to define unique pointers for DVR object types. 62 template <typename T> 63 using MakeUniqueDvrPointer = std::unique_ptr<T, DvrObjectDeleter>; 64 65 // Unique pointer types for DVR objects. 66 using UniqueDvrBuffer = MakeUniqueDvrPointer<DvrBuffer>; 67 using UniqueDvrReadBuffer = MakeUniqueDvrPointer<DvrReadBuffer>; 68 using UniqueDvrWriteBuffer = MakeUniqueDvrPointer<DvrWriteBuffer>; 69 using UniqueDvrReadBufferQueue = MakeUniqueDvrPointer<DvrReadBufferQueue>; 70 using UniqueDvrWriteBufferQueue = MakeUniqueDvrPointer<DvrWriteBufferQueue>; 71 using UniqueDvrDisplayManager = MakeUniqueDvrPointer<DvrDisplayManager>; 72 using UniqueDvrSurfaceState = MakeUniqueDvrPointer<DvrSurfaceState>; 73 using UniqueDvrSurface = MakeUniqueDvrPointer<DvrSurface>; 74 using UniqueDvrHwcClient = MakeUniqueDvrPointer<DvrHwcClient>; 75 using UniqueDvrHwcFrame = MakeUniqueDvrPointer<DvrHwcFrame>; 76 using UniqueDvrVSyncClient = MakeUniqueDvrPointer<DvrVSyncClient>; 77 78 // TODO(eieio): Add an adapter for std::shared_ptr that injects the deleter into 79 // the relevant constructors. 80 81 } // namespace dvr 82 } // namespace android 83 84 #endif // defined(__cplusplus) 85 86 #endif // ANDROID_DVR_DELETER_H_ 87
