143 lines
3.9 KiB
C++
143 lines
3.9 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/Log.h>
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#include <binder/MemoryBase.h>
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#include <binder/IMemory.h>
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#include <ui/PixelFormat.h>
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#include <ui/Surface.h>
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#include <pixelflinger/pixelflinger.h>
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#include "Buffer.h"
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#include "BufferAllocator.h"
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#include "SurfaceFlinger.h"
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namespace android {
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// ===========================================================================
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// Buffer and implementation of android_native_buffer_t
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// ===========================================================================
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Buffer::Buffer()
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: SurfaceBuffer(), mInitCheck(NO_ERROR), mVStride(0)
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{
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}
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Buffer::Buffer(uint32_t w, uint32_t h, PixelFormat format,
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uint32_t reqUsage, uint32_t flags)
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: SurfaceBuffer(), mInitCheck(NO_INIT), mVStride(0)
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{
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mInitCheck = initSize(w, h, format, reqUsage, flags);
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}
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Buffer::~Buffer()
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{
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if (handle) {
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BufferAllocator& allocator(BufferAllocator::get());
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allocator.free(handle);
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}
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}
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status_t Buffer::initCheck() const {
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return mInitCheck;
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}
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android_native_buffer_t* Buffer::getNativeBuffer() const
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{
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return static_cast<android_native_buffer_t*>(const_cast<Buffer*>(this));
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}
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status_t Buffer::reallocate(uint32_t w, uint32_t h, PixelFormat f,
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uint32_t reqUsage, uint32_t flags)
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{
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if (handle) {
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BufferAllocator& allocator(BufferAllocator::get());
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allocator.free(handle);
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handle = 0;
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}
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return initSize(w, h, f, reqUsage, flags);
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}
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status_t Buffer::initSize(uint32_t w, uint32_t h, PixelFormat format,
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uint32_t reqUsage, uint32_t flags)
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{
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status_t err = NO_ERROR;
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BufferAllocator& allocator = BufferAllocator::get();
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/*
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* buffers used for software rendering, but h/w composition
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* are allocated with SW_READ_OFTEN | SW_WRITE_OFTEN | HW_TEXTURE
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*
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* buffers used for h/w rendering and h/w composition
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* are allocated with HW_RENDER | HW_TEXTURE
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*
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* buffers used with h/w rendering and either NPOT or no egl_image_ext
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* are allocated with SW_READ_RARELY | HW_RENDER
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*
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*/
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if (flags & Buffer::SECURE) {
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// secure buffer, don't store it into the GPU
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usage = BufferAllocator::USAGE_SW_READ_OFTEN |
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BufferAllocator::USAGE_SW_WRITE_OFTEN;
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} else {
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// it's allowed to modify the usage flags here, but generally
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// the requested flags should be honored.
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usage = reqUsage | BufferAllocator::USAGE_HW_TEXTURE;
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}
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if (format == PIXEL_FORMAT_RGBX_8888)
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format = PIXEL_FORMAT_RGBA_8888;
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err = allocator.alloc(w, h, format, usage, &handle, &stride);
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if (err == NO_ERROR) {
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this->width = w;
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this->height = h;
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this->format = format;
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mVStride = 0;
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}
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return err;
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}
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status_t Buffer::lock(GGLSurface* sur, uint32_t usage)
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{
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void* vaddr;
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status_t res = SurfaceBuffer::lock(usage, &vaddr);
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if (res == NO_ERROR && sur) {
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sur->version = sizeof(GGLSurface);
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sur->width = width;
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sur->height = height;
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sur->stride = stride;
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sur->format = format;
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sur->vstride = mVStride;
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sur->data = static_cast<GGLubyte*>(vaddr);
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}
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return res;
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}
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// ---------------------------------------------------------------------------
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}; // namespace android
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