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/*
* Copyright 2009, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "BitmapAllocatorAndroid.h"
#include "SharedBufferStream.h"
#include "SkImageRef_GlobalPool.h"
#include "SkImageRef_ashmem.h"
// made this up, so we don't waste a file-descriptor on small images, plus
// we don't want to lose too much on the round-up to a page size (4K)
#define MIN_ASHMEM_ALLOC_SIZE (32*1024)
static bool should_use_ashmem(const SkBitmap& bm) {
return bm.getSize() >= MIN_ASHMEM_ALLOC_SIZE;
}
///////////////////////////////////////////////////////////////////////////////
namespace WebCore {
BitmapAllocatorAndroid::BitmapAllocatorAndroid(SharedBuffer* data,
int sampleSize)
{
fStream = new SharedBufferStream(data);
fSampleSize = sampleSize;
}
BitmapAllocatorAndroid::~BitmapAllocatorAndroid()
{
fStream->unref();
}
bool BitmapAllocatorAndroid::allocPixelRef(SkBitmap* bitmap, SkColorTable*)
{
SkPixelRef* ref;
if (should_use_ashmem(*bitmap)) {
// SkDebugf("ashmem [%d %d]\n", bitmap->width(), bitmap->height());
ref = new SkImageRef_ashmem(fStream, bitmap->config(), fSampleSize);
} else {
// SkDebugf("globalpool [%d %d]\n", bitmap->width(), bitmap->height());
ref = new SkImageRef_GlobalPool(fStream, bitmap->config(), fSampleSize);
}
bitmap->setPixelRef(ref)->unref();
return true;
}
}
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