2 * Copyright (C) 2007 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #define LOG_TAG "GraphicBuffer"
19 #include <ui/GraphicBuffer.h>
21 #include <cutils/atomic.h>
23 #include <grallocusage/GrallocUsageConversion.h>
25 #include <ui/Gralloc2.h>
26 #include <ui/GraphicBufferAllocator.h>
27 #include <ui/GraphicBufferMapper.h>
31 // ===========================================================================
32 // Buffer and implementation of ANativeWindowBuffer
33 // ===========================================================================
35 static uint64_t getUniqueId() {
36 static volatile int32_t nextId = 0;
37 uint64_t id = static_cast<uint64_t>(getpid()) << 32;
38 id |= static_cast<uint32_t>(android_atomic_inc(&nextId));
42 sp<GraphicBuffer> GraphicBuffer::from(ANativeWindowBuffer* anwb) {
43 return static_cast<GraphicBuffer *>(anwb);
46 GraphicBuffer::GraphicBuffer()
47 : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()),
48 mInitCheck(NO_ERROR), mId(getUniqueId()), mGenerationNumber(0)
61 GraphicBuffer::GraphicBuffer(uint32_t inWidth, uint32_t inHeight,
62 PixelFormat inFormat, uint32_t inUsage, std::string requestorName)
63 : GraphicBuffer(inWidth, inHeight, inFormat, 1, static_cast<uint64_t>(inUsage), requestorName)
67 GraphicBuffer::GraphicBuffer(uint32_t inWidth, uint32_t inHeight,
68 PixelFormat inFormat, uint32_t inLayerCount, uint64_t usage, std::string requestorName)
71 mInitCheck = initWithSize(inWidth, inHeight, inFormat, inLayerCount,
72 usage, std::move(requestorName));
76 GraphicBuffer::GraphicBuffer(uint32_t inWidth, uint32_t inHeight,
77 PixelFormat inFormat, uint32_t inLayerCount, uint32_t inUsage,
78 uint32_t inStride, native_handle_t* inHandle, bool keepOwnership)
79 : GraphicBuffer(inHandle, keepOwnership ? TAKE_HANDLE : WRAP_HANDLE,
80 inWidth, inHeight, inFormat, inLayerCount, static_cast<uint64_t>(inUsage),
85 GraphicBuffer::GraphicBuffer(const native_handle_t* handle,
86 HandleWrapMethod method, uint32_t width, uint32_t height,
87 PixelFormat format, uint32_t layerCount,
92 mInitCheck = initWithHandle(handle, method, width, height, format,
93 layerCount, usage, stride);
96 GraphicBuffer::~GraphicBuffer()
103 void GraphicBuffer::free_handle()
105 if (mOwner == ownHandle) {
106 mBufferMapper.freeBuffer(handle);
107 } else if (mOwner == ownData) {
108 GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
109 allocator.free(handle);
114 status_t GraphicBuffer::initCheck() const {
115 return static_cast<status_t>(mInitCheck);
118 void GraphicBuffer::dumpAllocationsToSystemLog()
120 GraphicBufferAllocator::dumpToSystemLog();
123 ANativeWindowBuffer* GraphicBuffer::getNativeBuffer() const
125 LOG_ALWAYS_FATAL_IF(this == NULL, "getNativeBuffer() called on NULL GraphicBuffer");
126 return static_cast<ANativeWindowBuffer*>(
127 const_cast<GraphicBuffer*>(this));
130 status_t GraphicBuffer::reallocate(uint32_t inWidth, uint32_t inHeight,
131 PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage)
133 if (mOwner != ownData)
134 return INVALID_OPERATION;
137 static_cast<int>(inWidth) == width &&
138 static_cast<int>(inHeight) == height &&
139 inFormat == format &&
140 inLayerCount == layerCount &&
145 GraphicBufferAllocator& allocator(GraphicBufferAllocator::get());
146 allocator.free(handle);
149 return initWithSize(inWidth, inHeight, inFormat, inLayerCount, inUsage, "[Reallocation]");
152 bool GraphicBuffer::needsReallocation(uint32_t inWidth, uint32_t inHeight,
153 PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage)
155 if (static_cast<int>(inWidth) != width) return true;
156 if (static_cast<int>(inHeight) != height) return true;
157 if (inFormat != format) return true;
158 if (inLayerCount != layerCount) return true;
159 if ((usage & inUsage) != inUsage) return true;
163 status_t GraphicBuffer::initWithSize(uint32_t inWidth, uint32_t inHeight,
164 PixelFormat inFormat, uint32_t inLayerCount, uint64_t inUsage,
165 std::string requestorName)
167 GraphicBufferAllocator& allocator = GraphicBufferAllocator::get();
168 uint32_t outStride = 0;
169 status_t err = allocator.allocate(inWidth, inHeight, inFormat, inLayerCount,
170 inUsage, &handle, &outStride, mId,
171 std::move(requestorName));
172 if (err == NO_ERROR) {
173 width = static_cast<int>(inWidth);
174 height = static_cast<int>(inHeight);
176 layerCount = inLayerCount;
178 usage_deprecated = int(usage);
179 stride = static_cast<int>(outStride);
184 status_t GraphicBuffer::initWithHandle(const native_handle_t* handle,
185 HandleWrapMethod method, uint32_t width, uint32_t height,
186 PixelFormat format, uint32_t layerCount, uint64_t usage,
189 ANativeWindowBuffer::width = static_cast<int>(width);
190 ANativeWindowBuffer::height = static_cast<int>(height);
191 ANativeWindowBuffer::stride = static_cast<int>(stride);
192 ANativeWindowBuffer::format = format;
193 ANativeWindowBuffer::usage = usage;
194 ANativeWindowBuffer::usage_deprecated = int(usage);
196 ANativeWindowBuffer::layerCount = layerCount;
198 mOwner = (method == WRAP_HANDLE) ? ownNone : ownHandle;
200 if (method == TAKE_UNREGISTERED_HANDLE || method == CLONE_HANDLE) {
201 buffer_handle_t importedHandle;
202 status_t err = mBufferMapper.importBuffer(handle, &importedHandle);
203 if (err != NO_ERROR) {
204 initWithHandle(nullptr, WRAP_HANDLE, 0, 0, 0, 0, 0, 0);
209 if (method == TAKE_UNREGISTERED_HANDLE) {
210 native_handle_close(handle);
211 native_handle_delete(const_cast<native_handle_t*>(handle));
214 handle = importedHandle;
217 ANativeWindowBuffer::handle = handle;
222 status_t GraphicBuffer::lock(uint32_t inUsage, void** vaddr)
224 const Rect lockBounds(width, height);
225 status_t res = lock(inUsage, lockBounds, vaddr);
229 status_t GraphicBuffer::lock(uint32_t inUsage, const Rect& rect, void** vaddr)
231 if (rect.left < 0 || rect.right > width ||
232 rect.top < 0 || rect.bottom > height) {
233 ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
234 rect.left, rect.top, rect.right, rect.bottom,
238 status_t res = getBufferMapper().lock(handle, inUsage, rect, vaddr);
242 status_t GraphicBuffer::lockYCbCr(uint32_t inUsage, android_ycbcr* ycbcr)
244 const Rect lockBounds(width, height);
245 status_t res = lockYCbCr(inUsage, lockBounds, ycbcr);
249 status_t GraphicBuffer::lockYCbCr(uint32_t inUsage, const Rect& rect,
250 android_ycbcr* ycbcr)
252 if (rect.left < 0 || rect.right > width ||
253 rect.top < 0 || rect.bottom > height) {
254 ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
255 rect.left, rect.top, rect.right, rect.bottom,
259 status_t res = getBufferMapper().lockYCbCr(handle, inUsage, rect, ycbcr);
263 status_t GraphicBuffer::unlock()
265 status_t res = getBufferMapper().unlock(handle);
269 status_t GraphicBuffer::lockAsync(uint32_t inUsage, void** vaddr, int fenceFd)
271 const Rect lockBounds(width, height);
272 status_t res = lockAsync(inUsage, lockBounds, vaddr, fenceFd);
276 status_t GraphicBuffer::lockAsync(uint32_t inUsage, const Rect& rect,
277 void** vaddr, int fenceFd)
279 return lockAsync(inUsage, inUsage, rect, vaddr, fenceFd);
282 status_t GraphicBuffer::lockAsync(uint64_t inProducerUsage,
283 uint64_t inConsumerUsage, const Rect& rect, void** vaddr, int fenceFd)
285 if (rect.left < 0 || rect.right > width ||
286 rect.top < 0 || rect.bottom > height) {
287 ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
288 rect.left, rect.top, rect.right, rect.bottom,
292 status_t res = getBufferMapper().lockAsync(handle, inProducerUsage,
293 inConsumerUsage, rect, vaddr, fenceFd);
297 status_t GraphicBuffer::lockAsyncYCbCr(uint32_t inUsage, android_ycbcr* ycbcr,
300 const Rect lockBounds(width, height);
301 status_t res = lockAsyncYCbCr(inUsage, lockBounds, ycbcr, fenceFd);
305 status_t GraphicBuffer::lockAsyncYCbCr(uint32_t inUsage, const Rect& rect,
306 android_ycbcr* ycbcr, int fenceFd)
308 if (rect.left < 0 || rect.right > width ||
309 rect.top < 0 || rect.bottom > height) {
310 ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)",
311 rect.left, rect.top, rect.right, rect.bottom,
315 status_t res = getBufferMapper().lockAsyncYCbCr(handle, inUsage, rect, ycbcr, fenceFd);
319 status_t GraphicBuffer::unlockAsync(int *fenceFd)
321 status_t res = getBufferMapper().unlockAsync(handle, fenceFd);
325 size_t GraphicBuffer::getFlattenedSize() const {
326 return static_cast<size_t>(13 + (handle ? handle->numInts : 0)) * sizeof(int);
329 size_t GraphicBuffer::getFdCount() const {
330 return static_cast<size_t>(handle ? handle->numFds : 0);
333 status_t GraphicBuffer::flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const {
334 size_t sizeNeeded = GraphicBuffer::getFlattenedSize();
335 if (size < sizeNeeded) return NO_MEMORY;
337 size_t fdCountNeeded = GraphicBuffer::getFdCount();
338 if (count < fdCountNeeded) return NO_MEMORY;
340 int32_t* buf = static_cast<int32_t*>(buffer);
346 buf[5] = static_cast<int32_t>(layerCount);
347 buf[6] = int(usage); // low 32-bits
348 buf[7] = static_cast<int32_t>(mId >> 32);
349 buf[8] = static_cast<int32_t>(mId & 0xFFFFFFFFull);
350 buf[9] = static_cast<int32_t>(mGenerationNumber);
353 buf[12] = int(usage >> 32); // high 32-bits
356 buf[10] = handle->numFds;
357 buf[11] = handle->numInts;
358 memcpy(fds, handle->data, static_cast<size_t>(handle->numFds) * sizeof(int));
359 memcpy(buf + 13, handle->data + handle->numFds,
360 static_cast<size_t>(handle->numInts) * sizeof(int));
363 buffer = static_cast<void*>(static_cast<uint8_t*>(buffer) + sizeNeeded);
366 fds += handle->numFds;
367 count -= static_cast<size_t>(handle->numFds);
373 status_t GraphicBuffer::unflatten(
374 void const*& buffer, size_t& size, int const*& fds, size_t& count) {
376 int const* buf = static_cast<int const*>(buffer);
378 // NOTE: it turns out that some media code generates a flattened GraphicBuffer manually!!!!!
379 // see H2BGraphicBufferProducer.cpp
380 uint32_t flattenWordCount = 0;
381 if (buf[0] == 'GB01') {
382 // new version with 64-bits usage bits
383 flattenWordCount = 13;
384 } else if (buf[0] == 'GBFR') {
385 // old version, when usage bits were 32-bits
386 flattenWordCount = 12;
391 const size_t numFds = static_cast<size_t>(buf[10]);
392 const size_t numInts = static_cast<size_t>(buf[11]);
394 // Limit the maxNumber to be relatively small. The number of fds or ints
395 // should not come close to this number, and the number itself was simply
396 // chosen to be high enough to not cause issues and low enough to prevent
397 // overflow problems.
398 const size_t maxNumber = 4096;
399 if (numFds >= maxNumber || numInts >= (maxNumber - flattenWordCount)) {
400 width = height = stride = format = usage_deprecated = 0;
404 ALOGE("unflatten: numFds or numInts is too large: %zd, %zd", numFds, numInts);
408 const size_t sizeNeeded = (flattenWordCount + numInts) * sizeof(int);
409 if (size < sizeNeeded) return NO_MEMORY;
411 size_t fdCountNeeded = numFds;
412 if (count < fdCountNeeded) return NO_MEMORY;
415 // free previous handle if any
419 if (numFds || numInts) {
424 layerCount = static_cast<uintptr_t>(buf[5]);
425 usage_deprecated = buf[6];
426 if (flattenWordCount == 13) {
427 usage = (uint64_t(buf[12]) << 32) | uint32_t(buf[6]);
429 usage = uint64_t(usage_deprecated);
431 native_handle* h = native_handle_create(
432 static_cast<int>(numFds), static_cast<int>(numInts));
434 width = height = stride = format = usage_deprecated = 0;
438 ALOGE("unflatten: native_handle_create failed");
441 memcpy(h->data, fds, numFds * sizeof(int));
442 memcpy(h->data + numFds, buf + flattenWordCount, numInts * sizeof(int));
445 width = height = stride = format = usage_deprecated = 0;
451 mId = static_cast<uint64_t>(buf[7]) << 32;
452 mId |= static_cast<uint32_t>(buf[8]);
454 mGenerationNumber = static_cast<uint32_t>(buf[9]);
459 buffer_handle_t importedHandle;
460 status_t err = mBufferMapper.importBuffer(handle, &importedHandle);
461 if (err != NO_ERROR) {
462 width = height = stride = format = usage_deprecated = 0;
466 ALOGE("unflatten: registerBuffer failed: %s (%d)", strerror(-err), err);
470 native_handle_close(handle);
471 native_handle_delete(const_cast<native_handle_t*>(handle));
472 handle = importedHandle;
475 buffer = static_cast<void const*>(static_cast<uint8_t const*>(buffer) + sizeNeeded);
483 // ---------------------------------------------------------------------------
485 }; // namespace android