멀티미디어 예제

02_day/test-ashmem2/Android.mk

@@ -0,0 +1,14 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES:= server.cpp
+LOCAL_MODULE := my_server
+LOCAL_SHARED_LIBRARIES:= libcutils libutils libbinder
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES:= client.cpp
+LOCAL_MODULE := my_client
+LOCAL_SHARED_LIBRARIES:= libcutils libutils libbinder
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_EXECUTABLE)

02_day/test-ashmem2/client.cpp

@@ -0,0 +1,21 @@
+#include <binder/IServiceManager.h>
+#include <utils/StrongPointer.h>
+#include <binder/MemoryHeapBase.h>
+#include <binder/IPCThreadState.h>
+#include <stdio.h>
+
+using namespace android;
+
+int main()
+{
+	sp<IServiceManager> sm = defaultServiceManager();
+	sp<IBinder> binder = sm->getService( String16("my.ashmem1") );
+	sp<IMemory> memory = interface_cast<IMemory>(binder); 
+	ssize_t offset=0;
+	size_t size=0;
+    sp<IMemoryHeap> heap = memory->getMemory(&offset, &size);
+
+	char *p = (char*)heap->getBase();
+	printf("[%s]\n", p+offset );
+	return 0;
+}

02_day/test-ashmem2/server.cpp

@@ -0,0 +1,19 @@
+#include <binder/IServiceManager.h>
+#include <utils/StrongPointer.h>
+#include <binder/MemoryHeapBase.h>
+#include <binder/MemoryBase.h>
+#include <binder/IPCThreadState.h>
+
+using namespace android;
+
+int main()
+{
+	sp<IServiceManager> sm = defaultServiceManager();
+	sp<MemoryHeapBase>  heap = new MemoryHeapBase(4096);
+	sm->addService( String16("my.ashmem1") , new MemoryBase(heap, 100, 100) );
+
+	char *p = (char*)heap->getBase();
+	sprintf(p+100, "Hello Client!!\n" );
+	IPCThreadState::self()->joinThreadPool();
+	return 0;
+}