GraphicBufferAllocator.cpp revision 48b888aab9fdcfba250722dffbdffe61f11c64f3
1/* 2** 3** Copyright 2009, The Android Open Source Project 4** 5** Licensed under the Apache License, Version 2.0 (the "License"); 6** you may not use this file except in compliance with the License. 7** You may obtain a copy of the License at 8** 9** http://www.apache.org/licenses/LICENSE-2.0 10** 11** Unless required by applicable law or agreed to in writing, software 12** distributed under the License is distributed on an "AS IS" BASIS, 13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14** See the License for the specific language governing permissions and 15** limitations under the License. 16*/ 17 18#define LOG_TAG "GraphicBufferAllocator" 19 20#include <cutils/log.h> 21 22#include <utils/Singleton.h> 23#include <utils/String8.h> 24 25#include <ui/GraphicBufferAllocator.h> 26 27namespace android { 28// --------------------------------------------------------------------------- 29 30ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferAllocator ) 31 32Mutex GraphicBufferAllocator::sLock; 33KeyedVector<buffer_handle_t, 34 GraphicBufferAllocator::alloc_rec_t> GraphicBufferAllocator::sAllocList; 35 36GraphicBufferAllocator::GraphicBufferAllocator() 37 : mAllocDev(0) 38{ 39 hw_module_t const* module; 40 int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module); 41 LOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID); 42 if (err == 0) { 43 gralloc_open(module, &mAllocDev); 44 } 45} 46 47GraphicBufferAllocator::~GraphicBufferAllocator() 48{ 49 gralloc_close(mAllocDev); 50} 51 52void GraphicBufferAllocator::dump(String8& result) const 53{ 54 Mutex::Autolock _l(sLock); 55 KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList); 56 size_t total = 0; 57 const size_t SIZE = 4096; 58 char buffer[SIZE]; 59 snprintf(buffer, SIZE, "Allocated buffers:\n"); 60 result.append(buffer); 61 const size_t c = list.size(); 62 for (size_t i=0 ; i<c ; i++) { 63 const alloc_rec_t& rec(list.valueAt(i)); 64 snprintf(buffer, SIZE, "%10p: %7.2f KiB | %4u (%4u) x %4u | %8X | 0x%08x\n", 65 list.keyAt(i), rec.size/1024.0f, 66 rec.w, rec.s, rec.h, rec.format, rec.usage); 67 result.append(buffer); 68 total += rec.size; 69 } 70 snprintf(buffer, SIZE, "Total allocated: %.2f KB\n", total/1024.0f); 71 result.append(buffer); 72 if (mAllocDev->common.version >= 1 && mAllocDev->dump) { 73 mAllocDev->dump(mAllocDev, buffer, SIZE); 74 result.append(buffer); 75 } 76} 77 78void GraphicBufferAllocator::dumpToSystemLog() 79{ 80 String8 s; 81 GraphicBufferAllocator::getInstance().dump(s); 82 LOGD("%s", s.string()); 83} 84 85status_t GraphicBufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format, 86 int usage, buffer_handle_t* handle, int32_t* stride) 87{ 88 // make sure to not allocate a N x 0 or 0 x N buffer, since this is 89 // allowed from an API stand-point allocate a 1x1 buffer instead. 90 if (!w || !h) 91 w = h = 1; 92 93 // we have a h/w allocator and h/w buffer is requested 94 status_t err; 95 96 err = mAllocDev->alloc(mAllocDev, w, h, format, usage, handle, stride); 97 98 LOGW_IF(err, "alloc(%u, %u, %d, %08x, ...) failed %d (%s)", 99 w, h, format, usage, err, strerror(-err)); 100 101 if (err == NO_ERROR) { 102 Mutex::Autolock _l(sLock); 103 KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList); 104 alloc_rec_t rec; 105 rec.w = w; 106 rec.h = h; 107 rec.s = *stride; 108 rec.format = format; 109 rec.usage = usage; 110 rec.size = h * stride[0] * bytesPerPixel(format); 111 list.add(*handle, rec); 112 } 113 114 return err; 115} 116 117status_t GraphicBufferAllocator::free(buffer_handle_t handle) 118{ 119 status_t err; 120 121 err = mAllocDev->free(mAllocDev, handle); 122 123 LOGW_IF(err, "free(...) failed %d (%s)", err, strerror(-err)); 124 if (err == NO_ERROR) { 125 Mutex::Autolock _l(sLock); 126 KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList); 127 list.removeItem(handle); 128 } 129 130 return err; 131} 132 133// --------------------------------------------------------------------------- 134}; // namespace android 135