a simple test app for gralloc
diff --git a/opengl/tests/gralloc/Buffer.cpp b/opengl/tests/gralloc/Buffer.cpp
new file mode 100644
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--- /dev/null
+++ b/opengl/tests/gralloc/Buffer.cpp
@@ -0,0 +1,111 @@
+/*
+ * 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.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+
+#include <ui/PixelFormat.h>
+#include <pixelflinger/pixelflinger.h>
+
+#include "Buffer.h"
+#include "BufferAllocator.h"
+
+
+namespace android {
+
+// ===========================================================================
+// Buffer and implementation of android_native_buffer_t
+// ===========================================================================
+
+Buffer::Buffer()
+ : SurfaceBuffer(), mInitCheck(NO_ERROR), mVStride(0)
+{
+}
+
+Buffer::Buffer(uint32_t w, uint32_t h, PixelFormat format,
+ uint32_t reqUsage, uint32_t flags)
+ : SurfaceBuffer(), mInitCheck(NO_INIT), mVStride(0)
+{
+ mInitCheck = initSize(w, h, format, reqUsage, flags);
+}
+
+Buffer::~Buffer()
+{
+ if (handle) {
+ BufferAllocator& allocator(BufferAllocator::get());
+ allocator.free(handle);
+ }
+}
+
+status_t Buffer::initCheck() const {
+ return mInitCheck;
+}
+
+android_native_buffer_t* Buffer::getNativeBuffer() const
+{
+ return static_cast<android_native_buffer_t*>(const_cast<Buffer*>(this));
+}
+
+status_t Buffer::reallocate(uint32_t w, uint32_t h, PixelFormat f,
+ uint32_t reqUsage, uint32_t flags)
+{
+ if (handle) {
+ BufferAllocator& allocator(BufferAllocator::get());
+ allocator.free(handle);
+ handle = 0;
+ }
+ return initSize(w, h, f, reqUsage, flags);
+}
+
+status_t Buffer::initSize(uint32_t w, uint32_t h, PixelFormat format,
+ uint32_t reqUsage, uint32_t flags)
+{
+ status_t err = NO_ERROR;
+ BufferAllocator& allocator = BufferAllocator::get();
+ err = allocator.alloc(w, h, format, reqUsage, &handle, &stride);
+ if (err == NO_ERROR) {
+ this->width = w;
+ this->height = h;
+ this->format = format;
+ mVStride = 0;
+ }
+
+ return err;
+}
+
+status_t Buffer::lock(GGLSurface* sur, uint32_t usage)
+{
+ void* vaddr;
+ status_t res = SurfaceBuffer::lock(usage, &vaddr);
+ if (res == NO_ERROR && sur) {
+ sur->version = sizeof(GGLSurface);
+ sur->width = width;
+ sur->height = height;
+ sur->stride = stride;
+ sur->format = format;
+ sur->vstride = mVStride;
+ sur->data = static_cast<GGLubyte*>(vaddr);
+ }
+ return res;
+}
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android