graphic_buffer_impl.cpp revision 2ddcc98cb29e567ea545b3eba2fedc576d1f5365
1/* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17// Provides the implementation of the GraphicBuffer interface in 18// renderer compostior 19 20#include "graphic_buffer_impl.h" 21 22#include <utils/Errors.h> 23 24namespace android { 25 26GraphicBufferImpl::GraphicBufferImpl(uint32_t w, uint32_t h) 27 : mBuffer(new android::GraphicBuffer(w, h, PIXEL_FORMAT_RGBA_8888, 28 android::GraphicBuffer::USAGE_HW_TEXTURE | 29 android::GraphicBuffer::USAGE_SW_READ_OFTEN | 30 android::GraphicBuffer::USAGE_SW_WRITE_OFTEN)) { 31} 32 33GraphicBufferImpl::~GraphicBufferImpl() { 34} 35 36// static 37long GraphicBufferImpl::Create(int w, int h) { 38 GraphicBufferImpl* buffer = new GraphicBufferImpl( 39 static_cast<uint32_t>(w), static_cast<uint32_t>(h)); 40 if (buffer->InitCheck() != NO_ERROR) { 41 delete buffer; 42 return 0; 43 } 44 return reinterpret_cast<intptr_t>(buffer); 45} 46 47// static 48void GraphicBufferImpl::Release(long buffer_id) { 49 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id); 50 delete buffer; 51} 52 53// static 54int GraphicBufferImpl::MapStatic(long buffer_id, AwMapMode mode, void** vaddr) { 55 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id); 56 return buffer->Map(mode, vaddr); 57} 58 59// static 60int GraphicBufferImpl::UnmapStatic(long buffer_id) { 61 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id); 62 return buffer->Unmap(); 63} 64 65// static 66void* GraphicBufferImpl::GetNativeBufferStatic(long buffer_id) { 67 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id); 68 return buffer->GetNativeBuffer(); 69} 70 71// static 72uint32_t GraphicBufferImpl::GetStrideStatic(long buffer_id) { 73 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id); 74 return buffer->GetStride(); 75} 76 77status_t GraphicBufferImpl::Map(AwMapMode mode, void** vaddr) { 78 int usage = 0; 79 switch (mode) { 80 case MAP_READ_ONLY: 81 usage = android::GraphicBuffer::USAGE_SW_READ_OFTEN; 82 break; 83 case MAP_WRITE_ONLY: 84 usage = android::GraphicBuffer::USAGE_SW_WRITE_OFTEN; 85 break; 86 case MAP_READ_WRITE: 87 usage = android::GraphicBuffer::USAGE_SW_READ_OFTEN | 88 android::GraphicBuffer::USAGE_SW_WRITE_OFTEN; 89 break; 90 default: 91 return INVALID_OPERATION; 92 } 93 return mBuffer->lock(usage, vaddr); 94} 95 96status_t GraphicBufferImpl::Unmap() { 97 return mBuffer->unlock(); 98} 99 100status_t GraphicBufferImpl::InitCheck() const { 101 return mBuffer->initCheck(); 102} 103 104void* GraphicBufferImpl::GetNativeBuffer() const { 105 return mBuffer->getNativeBuffer(); 106} 107 108uint32_t GraphicBufferImpl::GetStride() const { 109 static const int kBytesPerPixel = 4; 110 return mBuffer->getStride() * kBytesPerPixel; 111} 112 113} // namespace android 114