replicant-frameworks_native/libs/ui/GraphicBuffer.cpp
Mathias Agopian 30eb1b1803 [3171580] Add transform field to native buffers. (DO NOT MERGE)
This field indicate how the content of the buffer
needs to be transformed.

Change-Id: Ide3e980a90599e931406135693231276626adbbb
2010-12-03 17:35:07 -08:00

283 lines
7.4 KiB
C++

/*
* 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.
*/
#define LOG_TAG "GraphicBuffer"
#include <stdlib.h>
#include <stdint.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <ui/GraphicBuffer.h>
#include <ui/GraphicBufferAllocator.h>
#include <ui/GraphicBufferMapper.h>
#include <ui/PixelFormat.h>
#include <pixelflinger/pixelflinger.h>
namespace android {
// ===========================================================================
// Buffer and implementation of android_native_buffer_t
// ===========================================================================
GraphicBuffer::GraphicBuffer()
: BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
mInitCheck(NO_ERROR), mIndex(-1)
{
width =
height =
stride =
format =
usage = 0;
transform = 0;
handle = NULL;
}
GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h,
PixelFormat reqFormat, uint32_t reqUsage)
: BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
mInitCheck(NO_ERROR), mIndex(-1)
{
width =
height =
stride =
format =
usage =
transform = 0;
handle = NULL;
mInitCheck = initSize(w, h, reqFormat, reqUsage);
}
GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h,
PixelFormat inFormat, uint32_t inUsage,
uint32_t inStride, native_handle_t* inHandle, bool keepOwnership)
: BASE(), mOwner(keepOwnership ? ownHandle : ownNone),
mBufferMapper(GraphicBufferMapper::get()),
mInitCheck(NO_ERROR), mIndex(-1)
{
width = w;
height = h;
stride = inStride;
format = inFormat;
usage = inUsage;
transform = 0;
handle = inHandle;
}
GraphicBuffer::~GraphicBuffer()
{
if (handle) {
free_handle();
}
}
void GraphicBuffer::free_handle()
{
if (mOwner == ownHandle) {
native_handle_close(handle);
native_handle_delete(const_cast<native_handle*>(handle));
} else if (mOwner == ownData) {
GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
allocator.free(handle);
}
}
status_t GraphicBuffer::initCheck() const {
return mInitCheck;
}
void GraphicBuffer::dumpAllocationsToSystemLog()
{
GraphicBufferAllocator::dumpToSystemLog();
}
android_native_buffer_t* GraphicBuffer::getNativeBuffer() const
{
return static_cast<android_native_buffer_t*>(
const_cast<GraphicBuffer*>(this));
}
status_t GraphicBuffer::reallocate(uint32_t w, uint32_t h, PixelFormat f,
uint32_t reqUsage)
{
if (mOwner != ownData)
return INVALID_OPERATION;
if (handle && w==width && h==height && f==format && reqUsage==usage)
return NO_ERROR;
if (handle) {
GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
allocator.free(handle);
handle = 0;
}
return initSize(w, h, f, reqUsage);
}
status_t GraphicBuffer::initSize(uint32_t w, uint32_t h, PixelFormat format,
uint32_t reqUsage)
{
GraphicBufferAllocator& allocator = GraphicBufferAllocator::get();
status_t err = allocator.alloc(w, h, format, reqUsage, &handle, &stride);
if (err == NO_ERROR) {
this->width = w;
this->height = h;
this->format = format;
this->usage = reqUsage;
}
return err;
}
status_t GraphicBuffer::lock(uint32_t usage, void** vaddr)
{
const Rect lockBounds(width, height);
status_t res = lock(usage, lockBounds, vaddr);
return res;
}
status_t GraphicBuffer::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 GraphicBuffer::unlock()
{
status_t res = getBufferMapper().unlock(handle);
return res;
}
status_t GraphicBuffer::lock(GGLSurface* sur, uint32_t usage)
{
void* vaddr;
status_t res = GraphicBuffer::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->data = static_cast<GGLubyte*>(vaddr);
}
return res;
}
const int kFlattenFdsOffset = 9;
size_t GraphicBuffer::getFlattenedSize() const {
return (kFlattenFdsOffset + (handle ? handle->numInts : 0))*sizeof(int);
}
size_t GraphicBuffer::getFdCount() const {
return handle ? handle->numFds : 0;
}
status_t GraphicBuffer::flatten(void* buffer, size_t size,
int fds[], size_t count) const
{
size_t sizeNeeded = GraphicBuffer::getFlattenedSize();
if (size < sizeNeeded) return NO_MEMORY;
size_t fdCountNeeded = GraphicBuffer::getFdCount();
if (count < fdCountNeeded) return NO_MEMORY;
int* buf = static_cast<int*>(buffer);
buf[0] = 'GBFR';
buf[1] = width;
buf[2] = height;
buf[3] = stride;
buf[4] = format;
buf[5] = usage;
buf[6] = 0;
buf[7] = 0;
buf[8] = transform;
if (handle) {
buf[6] = handle->numFds;
buf[7] = handle->numInts;
native_handle_t const* const h = handle;
memcpy(fds, h->data, h->numFds*sizeof(int));
memcpy(&buf[kFlattenFdsOffset], h->data + h->numFds, h->numInts*sizeof(int));
}
return NO_ERROR;
}
status_t GraphicBuffer::unflatten(void const* buffer, size_t size,
int fds[], size_t count)
{
if (size < kFlattenFdsOffset*sizeof(int)) return NO_MEMORY;
int const* buf = static_cast<int const*>(buffer);
if (buf[0] != 'GBFR') return BAD_TYPE;
const size_t numFds = buf[6];
const size_t numInts = buf[7];
const size_t sizeNeeded = (kFlattenFdsOffset + numInts) * sizeof(int);
if (size < sizeNeeded) return NO_MEMORY;
size_t fdCountNeeded = 0;
if (count < fdCountNeeded) return NO_MEMORY;
if (handle) {
// free previous handle if any
free_handle();
}
if (numFds || numInts) {
width = buf[1];
height = buf[2];
stride = buf[3];
format = buf[4];
usage = buf[5];
transform = buf[8];
native_handle* h = native_handle_create(numFds, numInts);
memcpy(h->data, fds, numFds*sizeof(int));
memcpy(h->data + numFds, &buf[kFlattenFdsOffset], numInts*sizeof(int));
handle = h;
} else {
width = height = stride = format = usage = 0;
handle = NULL;
}
mOwner = ownHandle;
return NO_ERROR;
}
void GraphicBuffer::setIndex(int index) {
mIndex = index;
}
int GraphicBuffer::getIndex() const {
return mIndex;
}
// ---------------------------------------------------------------------------
}; // namespace android