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