Mathias Agopian | 15b0ebb | 2009-10-01 15:45:37 -0700 | [diff] [blame] | 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 | #include <sys/mman.h> |
| 19 | #include <cutils/ashmem.h> |
| 20 | #include <cutils/log.h> |
| 21 | |
| 22 | #include <utils/Singleton.h> |
| 23 | #include <utils/String8.h> |
| 24 | |
| 25 | #include "BufferAllocator.h" |
| 26 | |
| 27 | |
| 28 | namespace android { |
| 29 | // --------------------------------------------------------------------------- |
| 30 | |
| 31 | ANDROID_SINGLETON_STATIC_INSTANCE( BufferAllocator ) |
| 32 | |
| 33 | Mutex BufferAllocator::sLock; |
| 34 | KeyedVector<buffer_handle_t, BufferAllocator::alloc_rec_t> BufferAllocator::sAllocList; |
| 35 | |
| 36 | BufferAllocator::BufferAllocator() |
| 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 | |
| 47 | BufferAllocator::~BufferAllocator() |
| 48 | { |
| 49 | gralloc_close(mAllocDev); |
| 50 | } |
| 51 | |
| 52 | void BufferAllocator::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 = 512; |
| 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 x %4u | %2d | 0x%08x\n", |
| 65 | list.keyAt(i), rec.size/1024.0f, |
| 66 | rec.w, 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 | } |
| 73 | |
| 74 | static inline uint32_t clamp(uint32_t c) { |
| 75 | return c>0 ? c : 1; |
| 76 | } |
| 77 | |
| 78 | status_t BufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format, |
| 79 | int usage, buffer_handle_t* handle, int32_t* stride) |
| 80 | { |
| 81 | Mutex::Autolock _l(mLock); |
| 82 | |
| 83 | // make sure to not allocate a 0 x 0 buffer |
| 84 | w = clamp(w); |
| 85 | h = clamp(h); |
| 86 | |
| 87 | // we have a h/w allocator and h/w buffer is requested |
| 88 | status_t err = mAllocDev->alloc(mAllocDev, |
| 89 | w, h, format, usage, handle, stride); |
| 90 | |
| 91 | LOGW_IF(err, "alloc(%u, %u, %d, %08x, ...) failed %d (%s)", |
| 92 | w, h, format, usage, err, strerror(-err)); |
| 93 | |
| 94 | if (err == NO_ERROR) { |
| 95 | Mutex::Autolock _l(sLock); |
| 96 | KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList); |
| 97 | alloc_rec_t rec; |
| 98 | rec.w = w; |
| 99 | rec.h = h; |
| 100 | rec.format = format; |
| 101 | rec.usage = usage; |
| 102 | rec.vaddr = 0; |
| 103 | rec.size = h * stride[0] * bytesPerPixel(format); |
| 104 | list.add(*handle, rec); |
| 105 | } else { |
| 106 | String8 s; |
| 107 | dump(s); |
| 108 | LOGD("%s", s.string()); |
| 109 | } |
| 110 | |
| 111 | return err; |
| 112 | } |
| 113 | |
| 114 | status_t BufferAllocator::free(buffer_handle_t handle) |
| 115 | { |
| 116 | Mutex::Autolock _l(mLock); |
| 117 | |
| 118 | status_t err = mAllocDev->free(mAllocDev, handle); |
| 119 | LOGW_IF(err, "free(...) failed %d (%s)", err, strerror(-err)); |
| 120 | |
| 121 | if (err == NO_ERROR) { |
| 122 | Mutex::Autolock _l(sLock); |
| 123 | KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList); |
| 124 | list.removeItem(handle); |
| 125 | } |
| 126 | |
| 127 | return err; |
| 128 | } |
| 129 | |
| 130 | // --------------------------------------------------------------------------- |
| 131 | }; // namespace android |