1 files changed, 83 insertions, 0 deletions
diff --git a/libs/ui/BufferMapper.cpp b/libs/ui/BufferMapper.cpp
new file mode 100644
index 000000000000..a97188e73d85
--- /dev/null
+++ b/libs/ui/BufferMapper.cpp
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BufferMapper"
+
+#include <stdint.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <utils/Errors.h>
+#include <utils/threads.h>
+#include <utils/Log.h>
+
+#include <ui/BufferMapper.h>
+#include <ui/Rect.h>
+
+#include <EGL/android_natives.h>
+
+#include <hardware/gralloc.h>
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+BufferMapper::BufferMapper()
+    : mAllocMod(0)
+{
+    hw_module_t const* module;
+    int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
+    LOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
+    if (err == 0) {
+        mAllocMod = (gralloc_module_t const *)module;
+    }
+}
+
+status_t BufferMapper::map(buffer_handle_t handle, void** addr)
+{
+    Mutex::Autolock _l(mLock);
+    status_t err = mAllocMod->map(mAllocMod, handle, addr);
+    LOGW_IF(err, "map(...) failed %d (%s)", err, strerror(-err));
+    return err;
+}
+
+status_t BufferMapper::unmap(buffer_handle_t handle)
+{
+    Mutex::Autolock _l(mLock);
+    status_t err = mAllocMod->unmap(mAllocMod, handle);
+    LOGW_IF(err, "unmap(...) failed %d (%s)", err, strerror(-err));
+    return err;
+}
+
+status_t BufferMapper::lock(buffer_handle_t handle, int usage, const Rect& bounds)
+{
+    status_t err = mAllocMod->lock(mAllocMod, handle, usage,
+            bounds.left, bounds.top, bounds.width(), bounds.height());
+    LOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
+    return err;
+}
+
+status_t BufferMapper::unlock(buffer_handle_t handle)
+{
+    status_t err = mAllocMod->unlock(mAllocMod, handle);
+    LOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
+    return err;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android