1 files changed, 141 insertions, 0 deletions
diff --git a/libs/ui/GraphicBufferAllocator.cpp b/libs/ui/GraphicBufferAllocator.cpp
new file mode 100644
index 0000000..57d5fc3
--- /dev/null
+++ b/libs/ui/GraphicBufferAllocator.cpp
@@ -0,0 +1,141 @@
+/* 
+**
+** 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 <cutils/log.h>
+
+#include <utils/Singleton.h>
+#include <utils/String8.h>
+
+#include <ui/GraphicBufferAllocator.h>
+
+#include <private/ui/sw_gralloc_handle.h>
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferAllocator )
+
+Mutex GraphicBufferAllocator::sLock;
+KeyedVector<buffer_handle_t,
+    GraphicBufferAllocator::alloc_rec_t> GraphicBufferAllocator::sAllocList;
+
+GraphicBufferAllocator::GraphicBufferAllocator()
+    : 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);
+    }
+}
+
+GraphicBufferAllocator::~GraphicBufferAllocator()
+{
+    gralloc_close(mAllocDev);
+}
+
+void GraphicBufferAllocator::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 GraphicBufferAllocator::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; 
+    
+    if (usage & GRALLOC_USAGE_HW_MASK) {
+        err = mAllocDev->alloc(mAllocDev, w, h, format, usage, handle, stride);
+    } else {
+        err = sw_gralloc_handle_t::alloc(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 GraphicBufferAllocator::free(buffer_handle_t handle)
+{
+    Mutex::Autolock _l(mLock);
+
+    status_t err;
+    if (sw_gralloc_handle_t::validate(handle) < 0) {
+        err = mAllocDev->free(mAllocDev, handle);
+    } else {
+        err = sw_gralloc_handle_t::free((sw_gralloc_handle_t*)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