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/*
* Copyright (C) 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.
*/
#define LOG_TAG "SurfaceBuffer"
#include <stdint.h>
#include <errno.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <binder/Parcel.h>
#include <ui/BufferMapper.h>
#include <ui/Rect.h>
#include <private/ui/SurfaceBuffer.h>
namespace android {
// ============================================================================
// SurfaceBuffer
// ============================================================================
SurfaceBuffer::SurfaceBuffer()
: BASE(), mOwner(false), mBufferMapper(BufferMapper::get()), mIndex(-1)
{
width =
height =
stride =
format =
usage = 0;
handle = NULL;
}
SurfaceBuffer::SurfaceBuffer(const Parcel& data)
: BASE(), mOwner(true), mBufferMapper(BufferMapper::get())
{
// we own the handle in this case
width = data.readInt32();
if (width < 0) {
width = height = stride = format = usage = 0;
handle = 0;
} else {
height = data.readInt32();
stride = data.readInt32();
format = data.readInt32();
usage = data.readInt32();
handle = data.readNativeHandle();
}
}
SurfaceBuffer::~SurfaceBuffer()
{
if (handle && mOwner) {
native_handle_close(handle);
native_handle_delete(const_cast<native_handle*>(handle));
}
}
status_t SurfaceBuffer::lock(uint32_t usage, void** vaddr)
{
const Rect lockBounds(width, height);
status_t res = lock(usage, lockBounds, vaddr);
return res;
}
status_t SurfaceBuffer::lock(uint32_t usage, const Rect& rect, void** vaddr)
{
if (rect.left < 0 || rect.right > this->width ||
rect.top < 0 || rect.bottom > this->height) {
LOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
rect.left, rect.top, rect.right, rect.bottom,
this->width, this->height);
return BAD_VALUE;
}
status_t res = getBufferMapper().lock(handle, usage, rect, vaddr);
return res;
}
status_t SurfaceBuffer::unlock()
{
status_t res = getBufferMapper().unlock(handle);
return res;
}
status_t SurfaceBuffer::writeToParcel(Parcel* reply,
android_native_buffer_t const* buffer)
{
if (buffer == NULL)
return BAD_VALUE;
if (buffer->width < 0 || buffer->height < 0)
return BAD_VALUE;
status_t err = NO_ERROR;
if (buffer->handle == NULL) {
// this buffer doesn't have a handle
reply->writeInt32(NO_MEMORY);
} else {
reply->writeInt32(buffer->width);
reply->writeInt32(buffer->height);
reply->writeInt32(buffer->stride);
reply->writeInt32(buffer->format);
reply->writeInt32(buffer->usage);
err = reply->writeNativeHandle(buffer->handle);
}
return err;
}
void SurfaceBuffer::setIndex(int index) {
mIndex = index;
}
int SurfaceBuffer::getIndex() const {
return mIndex;
}
}; // namespace android
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