a simple test app for gralloc
diff --git a/opengl/tests/gralloc/BufferAllocator.cpp b/opengl/tests/gralloc/BufferAllocator.cpp
new file mode 100644
index 0000000..caf9bec
--- /dev/null
+++ b/opengl/tests/gralloc/BufferAllocator.cpp
@@ -0,0 +1,131 @@
+/*
+**
+** Copyright 2009, 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 <sys/mman.h>
+#include <cutils/ashmem.h>
+#include <cutils/log.h>
+
+#include <utils/Singleton.h>
+#include <utils/String8.h>
+
+#include "BufferAllocator.h"
+
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+ANDROID_SINGLETON_STATIC_INSTANCE( BufferAllocator )
+
+Mutex BufferAllocator::sLock;
+KeyedVector<buffer_handle_t, BufferAllocator::alloc_rec_t> BufferAllocator::sAllocList;
+
+BufferAllocator::BufferAllocator()
+ : mAllocDev(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) {
+ gralloc_open(module, &mAllocDev);
+ }
+}
+
+BufferAllocator::~BufferAllocator()
+{
+ gralloc_close(mAllocDev);
+}
+
+void BufferAllocator::dump(String8& result) const
+{
+ Mutex::Autolock _l(sLock);
+ KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
+ size_t total = 0;
+ const size_t SIZE = 512;
+ char buffer[SIZE];
+ snprintf(buffer, SIZE, "Allocated buffers:\n");
+ result.append(buffer);
+ const size_t c = list.size();
+ for (size_t i=0 ; i<c ; i++) {
+ const alloc_rec_t& rec(list.valueAt(i));
+ snprintf(buffer, SIZE, "%10p: %7.2f KiB | %4u x %4u | %2d | 0x%08x\n",
+ list.keyAt(i), rec.size/1024.0f,
+ rec.w, rec.h, rec.format, rec.usage);
+ result.append(buffer);
+ total += rec.size;
+ }
+ snprintf(buffer, SIZE, "Total allocated: %.2f KB\n", total/1024.0f);
+ result.append(buffer);
+}
+
+static inline uint32_t clamp(uint32_t c) {
+ return c>0 ? c : 1;
+}
+
+status_t BufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format,
+ int usage, buffer_handle_t* handle, int32_t* stride)
+{
+ Mutex::Autolock _l(mLock);
+
+ // make sure to not allocate a 0 x 0 buffer
+ w = clamp(w);
+ h = clamp(h);
+
+ // we have a h/w allocator and h/w buffer is requested
+ status_t err = mAllocDev->alloc(mAllocDev,
+ w, h, format, usage, handle, stride);
+
+ LOGW_IF(err, "alloc(%u, %u, %d, %08x, ...) failed %d (%s)",
+ w, h, format, usage, err, strerror(-err));
+
+ if (err == NO_ERROR) {
+ Mutex::Autolock _l(sLock);
+ KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
+ alloc_rec_t rec;
+ rec.w = w;
+ rec.h = h;
+ rec.format = format;
+ rec.usage = usage;
+ rec.vaddr = 0;
+ rec.size = h * stride[0] * bytesPerPixel(format);
+ list.add(*handle, rec);
+ } else {
+ String8 s;
+ dump(s);
+ LOGD("%s", s.string());
+ }
+
+ return err;
+}
+
+status_t BufferAllocator::free(buffer_handle_t handle)
+{
+ Mutex::Autolock _l(mLock);
+
+ status_t err = mAllocDev->free(mAllocDev, handle);
+ LOGW_IF(err, "free(...) failed %d (%s)", err, strerror(-err));
+
+ if (err == NO_ERROR) {
+ Mutex::Autolock _l(sLock);
+ KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
+ list.removeItem(handle);
+ }
+
+ return err;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android