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
24 namespace android {
25
GraphicBufferImpl(uint32_t w,uint32_t h)26 GraphicBufferImpl::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
~GraphicBufferImpl()33 GraphicBufferImpl::~GraphicBufferImpl() {
34 }
35
36 // static
Create(int w,int h)37 long 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
Release(long buffer_id)48 void GraphicBufferImpl::Release(long buffer_id) {
49 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id);
50 delete buffer;
51 }
52
53 // static
MapStatic(long buffer_id,AwMapMode mode,void ** vaddr)54 int 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
UnmapStatic(long buffer_id)60 int GraphicBufferImpl::UnmapStatic(long buffer_id) {
61 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id);
62 return buffer->Unmap();
63 }
64
65 // static
GetNativeBufferStatic(long buffer_id)66 void* GraphicBufferImpl::GetNativeBufferStatic(long buffer_id) {
67 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id);
68 return buffer->GetNativeBuffer();
69 }
70
71 // static
GetStrideStatic(long buffer_id)72 uint32_t GraphicBufferImpl::GetStrideStatic(long buffer_id) {
73 GraphicBufferImpl* buffer = reinterpret_cast<GraphicBufferImpl*>(buffer_id);
74 return buffer->GetStride();
75 }
76
Map(AwMapMode mode,void ** vaddr)77 status_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
Unmap()96 status_t GraphicBufferImpl::Unmap() {
97 return mBuffer->unlock();
98 }
99
InitCheck() const100 status_t GraphicBufferImpl::InitCheck() const {
101 return mBuffer->initCheck();
102 }
103
GetNativeBuffer() const104 void* GraphicBufferImpl::GetNativeBuffer() const {
105 return mBuffer->getNativeBuffer();
106 }
107
GetStride() const108 uint32_t GraphicBufferImpl::GetStride() const {
109 static const int kBytesPerPixel = 4;
110 return mBuffer->getStride() * kBytesPerPixel;
111 }
112
113 } // namespace android
114