| /* |
| * Copyright (C) 2009 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "SurfaceBuffer" |
| |
| #include <stdint.h> |
| #include <errno.h> |
| #include <sys/types.h> |
| |
| #include <utils/Errors.h> |
| #include <utils/Log.h> |
| #include <binder/Parcel.h> |
| |
| #include <ui/BufferMapper.h> |
| #include <ui/Rect.h> |
| #include <private/ui/SurfaceBuffer.h> |
| |
| namespace android { |
| |
| // ============================================================================ |
| // SurfaceBuffer |
| // ============================================================================ |
| |
| SurfaceBuffer::SurfaceBuffer() |
| : BASE(), mOwner(false), mBufferMapper(BufferMapper::get()), mIndex(-1) |
| { |
| width = |
| height = |
| stride = |
| format = |
| usage = 0; |
| handle = NULL; |
| } |
| |
| SurfaceBuffer::SurfaceBuffer(const Parcel& data) |
| : BASE(), mOwner(true), mBufferMapper(BufferMapper::get()) |
| { |
| // we own the handle in this case |
| width = data.readInt32(); |
| if (width < 0) { |
| width = height = stride = format = usage = 0; |
| handle = 0; |
| } else { |
| height = data.readInt32(); |
| stride = data.readInt32(); |
| format = data.readInt32(); |
| usage = data.readInt32(); |
| handle = data.readNativeHandle(); |
| } |
| } |
| |
| SurfaceBuffer::~SurfaceBuffer() |
| { |
| if (handle && mOwner) { |
| native_handle_close(handle); |
| native_handle_delete(const_cast<native_handle*>(handle)); |
| } |
| } |
| |
| status_t SurfaceBuffer::lock(uint32_t usage, void** vaddr) |
| { |
| const Rect lockBounds(width, height); |
| status_t res = lock(usage, lockBounds, vaddr); |
| return res; |
| } |
| |
| status_t SurfaceBuffer::lock(uint32_t usage, const Rect& rect, void** vaddr) |
| { |
| if (rect.left < 0 || rect.right > this->width || |
| rect.top < 0 || rect.bottom > this->height) { |
| LOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)", |
| rect.left, rect.top, rect.right, rect.bottom, |
| this->width, this->height); |
| return BAD_VALUE; |
| } |
| status_t res = getBufferMapper().lock(handle, usage, rect, vaddr); |
| return res; |
| } |
| |
| status_t SurfaceBuffer::unlock() |
| { |
| status_t res = getBufferMapper().unlock(handle); |
| return res; |
| } |
| |
| status_t SurfaceBuffer::writeToParcel(Parcel* reply, |
| android_native_buffer_t const* buffer) |
| { |
| if (buffer == NULL) |
| return BAD_VALUE; |
| |
| if (buffer->width < 0 || buffer->height < 0) |
| return BAD_VALUE; |
| |
| status_t err = NO_ERROR; |
| if (buffer->handle == NULL) { |
| // this buffer doesn't have a handle |
| reply->writeInt32(NO_MEMORY); |
| } else { |
| reply->writeInt32(buffer->width); |
| reply->writeInt32(buffer->height); |
| reply->writeInt32(buffer->stride); |
| reply->writeInt32(buffer->format); |
| reply->writeInt32(buffer->usage); |
| err = reply->writeNativeHandle(buffer->handle); |
| } |
| return err; |
| } |
| |
| |
| void SurfaceBuffer::setIndex(int index) { |
| mIndex = index; |
| } |
| |
| int SurfaceBuffer::getIndex() const { |
| return mIndex; |
| } |
| |
| |
| }; // namespace android |
| |