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      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 <cutils/log.h>
     19 
     20 #include <utils/Singleton.h>
     21 #include <utils/String8.h>
     22 
     23 #include <ui/GraphicBufferAllocator.h>
     24 
     25 #include <private/ui/sw_gralloc_handle.h>
     26 
     27 namespace android {
     28 // ---------------------------------------------------------------------------
     29 
     30 ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferAllocator )
     31 
     32 Mutex GraphicBufferAllocator::sLock;
     33 KeyedVector<buffer_handle_t,
     34     GraphicBufferAllocator::alloc_rec_t> GraphicBufferAllocator::sAllocList;
     35 
     36 GraphicBufferAllocator::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 
     47 GraphicBufferAllocator::~GraphicBufferAllocator()
     48 {
     49     gralloc_close(mAllocDev);
     50 }
     51 
     52 void 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 = 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 GraphicBufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format,
     79         int usage, buffer_handle_t* handle, int32_t* stride)
     80 {
     81     // make sure to not allocate a 0 x 0 buffer
     82     w = clamp(w);
     83     h = clamp(h);
     84 
     85     // we have a h/w allocator and h/w buffer is requested
     86     status_t err;
     87 
     88     if (usage & GRALLOC_USAGE_HW_MASK) {
     89         err = mAllocDev->alloc(mAllocDev, w, h, format, usage, handle, stride);
     90     } else {
     91         err = sw_gralloc_handle_t::alloc(w, h, format, usage, handle, stride);
     92     }
     93 
     94     LOGW_IF(err, "alloc(%u, %u, %d, %08x, ...) failed %d (%s)",
     95             w, h, format, usage, err, strerror(-err));
     96 
     97     if (err == NO_ERROR) {
     98         Mutex::Autolock _l(sLock);
     99         KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
    100         alloc_rec_t rec;
    101         rec.w = w;
    102         rec.h = h;
    103         rec.format = format;
    104         rec.usage = usage;
    105         rec.vaddr = 0;
    106         rec.size = h * stride[0] * bytesPerPixel(format);
    107         list.add(*handle, rec);
    108     } else {
    109         String8 s;
    110         dump(s);
    111         LOGD("%s", s.string());
    112     }
    113 
    114     return err;
    115 }
    116 
    117 status_t GraphicBufferAllocator::free(buffer_handle_t handle)
    118 {
    119     status_t err;
    120     if (sw_gralloc_handle_t::validate(handle) < 0) {
    121         err = mAllocDev->free(mAllocDev, handle);
    122     } else {
    123         err = sw_gralloc_handle_t::free((sw_gralloc_handle_t*)handle);
    124     }
    125 
    126     LOGW_IF(err, "free(...) failed %d (%s)", err, strerror(-err));
    127     if (err == NO_ERROR) {
    128         Mutex::Autolock _l(sLock);
    129         KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
    130         list.removeItem(handle);
    131     }
    132 
    133     return err;
    134 }
    135 
    136 // ---------------------------------------------------------------------------
    137 }; // namespace android
    138