GraphicBufferAllocator.cpp revision 9d4536835248525f32f1504a3d28d5bbfa0a2910
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 if (rec.size) { 65 snprintf(buffer, SIZE, "%10p: %7.2f KiB | %4u (%4u) x %4u | %8X | 0x%08x\n", 66 list.keyAt(i), rec.size/1024.0f, 67 rec.w, rec.s, rec.h, rec.format, rec.usage); 68 } else { 69 snprintf(buffer, SIZE, "%10p: unknown | %4u (%4u) x %4u | %8X | 0x%08x\n", 70 list.keyAt(i), 71 rec.w, rec.s, rec.h, rec.format, rec.usage); 72 } 73 result.append(buffer); 74 total += rec.size; 75 } 76 snprintf(buffer, SIZE, "Total allocated (estimate): %.2f KB\n", total/1024.0f); 77 result.append(buffer); 78 if (mAllocDev->common.version >= 1 && mAllocDev->dump) { 79 mAllocDev->dump(mAllocDev, buffer, SIZE); 80 result.append(buffer); 81 } 82} 83 84void GraphicBufferAllocator::dumpToSystemLog() 85{ 86 String8 s; 87 GraphicBufferAllocator::getInstance().dump(s); 88 ALOGD("%s", s.string()); 89} 90 91status_t GraphicBufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format, 92 int usage, buffer_handle_t* handle, int32_t* stride) 93{ 94 // make sure to not allocate a N x 0 or 0 x N buffer, since this is 95 // allowed from an API stand-point allocate a 1x1 buffer instead. 96 if (!w || !h) 97 w = h = 1; 98 99 // we have a h/w allocator and h/w buffer is requested 100 status_t err; 101 102 err = mAllocDev->alloc(mAllocDev, w, h, format, usage, handle, stride); 103 104 LOGW_IF(err, "alloc(%u, %u, %d, %08x, ...) failed %d (%s)", 105 w, h, format, usage, err, strerror(-err)); 106 107 if (err == NO_ERROR) { 108 Mutex::Autolock _l(sLock); 109 KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList); 110 int bpp = bytesPerPixel(format); 111 if (bpp < 0) { 112 // probably a HAL custom format. in any case, we don't know 113 // what its pixel size is. 114 bpp = 0; 115 } 116 alloc_rec_t rec; 117 rec.w = w; 118 rec.h = h; 119 rec.s = *stride; 120 rec.format = format; 121 rec.usage = usage; 122 rec.size = h * stride[0] * bpp; 123 list.add(*handle, rec); 124 } 125 126 return err; 127} 128 129status_t GraphicBufferAllocator::free(buffer_handle_t handle) 130{ 131 status_t err; 132 133 err = mAllocDev->free(mAllocDev, handle); 134 135 LOGW_IF(err, "free(...) failed %d (%s)", err, strerror(-err)); 136 if (err == NO_ERROR) { 137 Mutex::Autolock _l(sLock); 138 KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList); 139 list.removeItem(handle); 140 } 141 142 return err; 143} 144 145// --------------------------------------------------------------------------- 146}; // namespace android 147