1 /*
2 * Copyright (C) 2007 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 #include <stdlib.h>
18 #include <stdint.h>
19 #include <sys/types.h>
20
21 #include <binder/Parcel.h>
22
23 #include <utils/Errors.h>
24 #include <utils/Log.h>
25
26 #include <ui/GraphicBuffer.h>
27 #include <ui/GraphicBufferAllocator.h>
28 #include <ui/GraphicBufferMapper.h>
29 #include <ui/PixelFormat.h>
30
31 #include <pixelflinger/pixelflinger.h>
32
33 namespace android {
34
35 // ===========================================================================
36 // Buffer and implementation of android_native_buffer_t
37 // ===========================================================================
38
GraphicBuffer()39 GraphicBuffer::GraphicBuffer()
40 : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
41 mInitCheck(NO_ERROR), mVStride(0), mIndex(-1)
42 {
43 width =
44 height =
45 stride =
46 format =
47 usage = 0;
48 handle = NULL;
49 }
50
GraphicBuffer(uint32_t w,uint32_t h,PixelFormat reqFormat,uint32_t reqUsage)51 GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h,
52 PixelFormat reqFormat, uint32_t reqUsage)
53 : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
54 mInitCheck(NO_ERROR), mVStride(0), mIndex(-1)
55 {
56 width =
57 height =
58 stride =
59 format =
60 usage = 0;
61 handle = NULL;
62 mInitCheck = initSize(w, h, reqFormat, reqUsage);
63 }
64
GraphicBuffer(uint32_t w,uint32_t h,PixelFormat inFormat,uint32_t inUsage,uint32_t inStride,native_handle_t * inHandle,bool keepOwnership)65 GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h,
66 PixelFormat inFormat, uint32_t inUsage,
67 uint32_t inStride, native_handle_t* inHandle, bool keepOwnership)
68 : BASE(), mOwner(keepOwnership ? ownHandle : ownNone),
69 mBufferMapper(GraphicBufferMapper::get()),
70 mInitCheck(NO_ERROR), mVStride(0), mIndex(-1)
71 {
72 width = w;
73 height = h;
74 stride = inStride;
75 format = inFormat;
76 usage = inUsage;
77 handle = inHandle;
78 }
79
GraphicBuffer(const Parcel & data)80 GraphicBuffer::GraphicBuffer(const Parcel& data)
81 : BASE(), mOwner(ownHandle), mBufferMapper(GraphicBufferMapper::get()),
82 mInitCheck(NO_ERROR), mVStride(0), mIndex(-1)
83 {
84 // we own the handle in this case
85 width = data.readInt32();
86 if (width < 0) {
87 width = height = stride = format = usage = 0;
88 handle = 0;
89 } else {
90 height = data.readInt32();
91 stride = data.readInt32();
92 format = data.readInt32();
93 usage = data.readInt32();
94 handle = data.readNativeHandle();
95 }
96 }
97
~GraphicBuffer()98 GraphicBuffer::~GraphicBuffer()
99 {
100 if (handle) {
101 if (mOwner == ownHandle) {
102 native_handle_close(handle);
103 native_handle_delete(const_cast<native_handle*>(handle));
104 } else if (mOwner == ownData) {
105 GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
106 allocator.free(handle);
107 }
108 }
109 }
110
initCheck() const111 status_t GraphicBuffer::initCheck() const {
112 return mInitCheck;
113 }
114
getNativeBuffer() const115 android_native_buffer_t* GraphicBuffer::getNativeBuffer() const
116 {
117 return static_cast<android_native_buffer_t*>(
118 const_cast<GraphicBuffer*>(this));
119 }
120
reallocate(uint32_t w,uint32_t h,PixelFormat f,uint32_t reqUsage)121 status_t GraphicBuffer::reallocate(uint32_t w, uint32_t h, PixelFormat f,
122 uint32_t reqUsage)
123 {
124 if (mOwner != ownData)
125 return INVALID_OPERATION;
126
127 if (handle) {
128 GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
129 allocator.free(handle);
130 handle = 0;
131 }
132 return initSize(w, h, f, reqUsage);
133 }
134
initSize(uint32_t w,uint32_t h,PixelFormat format,uint32_t reqUsage)135 status_t GraphicBuffer::initSize(uint32_t w, uint32_t h, PixelFormat format,
136 uint32_t reqUsage)
137 {
138 if (format == PIXEL_FORMAT_RGBX_8888)
139 format = PIXEL_FORMAT_RGBA_8888;
140
141 GraphicBufferAllocator& allocator = GraphicBufferAllocator::get();
142 status_t err = allocator.alloc(w, h, format, reqUsage, &handle, &stride);
143 if (err == NO_ERROR) {
144 this->width = w;
145 this->height = h;
146 this->format = format;
147 this->usage = reqUsage;
148 mVStride = 0;
149 }
150 return err;
151 }
152
lock(uint32_t usage,void ** vaddr)153 status_t GraphicBuffer::lock(uint32_t usage, void** vaddr)
154 {
155 const Rect lockBounds(width, height);
156 status_t res = lock(usage, lockBounds, vaddr);
157 return res;
158 }
159
lock(uint32_t usage,const Rect & rect,void ** vaddr)160 status_t GraphicBuffer::lock(uint32_t usage, const Rect& rect, void** vaddr)
161 {
162 if (rect.left < 0 || rect.right > this->width ||
163 rect.top < 0 || rect.bottom > this->height) {
164 LOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
165 rect.left, rect.top, rect.right, rect.bottom,
166 this->width, this->height);
167 return BAD_VALUE;
168 }
169 status_t res = getBufferMapper().lock(handle, usage, rect, vaddr);
170 return res;
171 }
172
unlock()173 status_t GraphicBuffer::unlock()
174 {
175 status_t res = getBufferMapper().unlock(handle);
176 return res;
177 }
178
lock(GGLSurface * sur,uint32_t usage)179 status_t GraphicBuffer::lock(GGLSurface* sur, uint32_t usage)
180 {
181 void* vaddr;
182 status_t res = GraphicBuffer::lock(usage, &vaddr);
183 if (res == NO_ERROR && sur) {
184 sur->version = sizeof(GGLSurface);
185 sur->width = width;
186 sur->height = height;
187 sur->stride = stride;
188 sur->format = format;
189 sur->vstride = mVStride;
190 sur->data = static_cast<GGLubyte*>(vaddr);
191 }
192 return res;
193 }
194
195
writeToParcel(Parcel * reply,android_native_buffer_t const * buffer)196 status_t GraphicBuffer::writeToParcel(Parcel* reply,
197 android_native_buffer_t const* buffer)
198 {
199 if (buffer == NULL)
200 return BAD_VALUE;
201
202 if (buffer->width < 0 || buffer->height < 0)
203 return BAD_VALUE;
204
205 status_t err = NO_ERROR;
206 if (buffer->handle == NULL) {
207 // this buffer doesn't have a handle
208 reply->writeInt32(NO_MEMORY);
209 } else {
210 reply->writeInt32(buffer->width);
211 reply->writeInt32(buffer->height);
212 reply->writeInt32(buffer->stride);
213 reply->writeInt32(buffer->format);
214 reply->writeInt32(buffer->usage);
215 err = reply->writeNativeHandle(buffer->handle);
216 }
217 return err;
218 }
219
220
setIndex(int index)221 void GraphicBuffer::setIndex(int index) {
222 mIndex = index;
223 }
224
getIndex() const225 int GraphicBuffer::getIndex() const {
226 return mIndex;
227 }
228
setVerticalStride(uint32_t vstride)229 void GraphicBuffer::setVerticalStride(uint32_t vstride) {
230 mVStride = vstride;
231 }
232
getVerticalStride() const233 uint32_t GraphicBuffer::getVerticalStride() const {
234 return mVStride;
235 }
236
237 // ---------------------------------------------------------------------------
238
239 }; // namespace android
240