GraphicBufferAllocator.cpp revision 678bdd6349344df254cc0c3377a40fd99e216635 
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
27#include <private/ui/sw_gralloc_handle.h>
28
29namespace android {
30// ---------------------------------------------------------------------------
31
32ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferAllocator )
33
34Mutex GraphicBufferAllocator::sLock;
35KeyedVector<buffer_handle_t,
36    GraphicBufferAllocator::alloc_rec_t> GraphicBufferAllocator::sAllocList;
37
38GraphicBufferAllocator::GraphicBufferAllocator()
39    : mAllocDev(0)
40{
41    hw_module_t const* module;
42    int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
43    LOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
44    if (err == 0) {
45        gralloc_open(module, &mAllocDev);
46    }
47}
48
49GraphicBufferAllocator::~GraphicBufferAllocator()
50{
51    gralloc_close(mAllocDev);
52}
53
54void GraphicBufferAllocator::dump(String8& result) const
55{
56    Mutex::Autolock _l(sLock);
57    KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
58    size_t total = 0;
59    const size_t SIZE = 512;
60    char buffer[SIZE];
61    snprintf(buffer, SIZE, "Allocated buffers:\n");
62    result.append(buffer);
63    const size_t c = list.size();
64    for (size_t i=0 ; i<c ; i++) {
65        const alloc_rec_t& rec(list.valueAt(i));
66        snprintf(buffer, SIZE, "%10p: %7.2f KiB | %4u (%4u) x %4u | %2d | 0x%08x\n",
67            list.keyAt(i), rec.size/1024.0f,
68            rec.w, rec.s, rec.h, rec.format, rec.usage);
69        result.append(buffer);
70        total += rec.size;
71    }
72    snprintf(buffer, SIZE, "Total allocated: %.2f KB\n", total/1024.0f);
73    result.append(buffer);
74}
75
76void GraphicBufferAllocator::dumpToSystemLog()
77{
78    String8 s;
79    GraphicBufferAllocator::getInstance().dump(s);
80    LOGD("%s", s.string());
81}
82
83status_t GraphicBufferAllocator::alloc(uint32_t w, uint32_t h, PixelFormat format,
84        int usage, buffer_handle_t* handle, int32_t* stride)
85{
86    // make sure to not allocate a N x 0 or 0 x N buffer, since this is
87    // allowed from an API stand-point allocate a 1x1 buffer instead.
88    if (!w || !h)
89        w = h = 1;
90
91    // we have a h/w allocator and h/w buffer is requested
92    status_t err;
93
94    if (usage & GRALLOC_USAGE_HW_MASK) {
95        err = mAllocDev->alloc(mAllocDev, w, h, format, usage, handle, stride);
96    } else {
97        err = sw_gralloc_handle_t::alloc(w, h, format, usage, handle, stride);
98    }
99
100    LOGW_IF(err, "alloc(%u, %u, %d, %08x, ...) failed %d (%s)",
101            w, h, format, usage, err, strerror(-err));
102
103    if (err == NO_ERROR) {
104        Mutex::Autolock _l(sLock);
105        KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
106        alloc_rec_t rec;
107        rec.w = w;
108        rec.h = h;
109        rec.s = *stride;
110        rec.format = format;
111        rec.usage = usage;
112        rec.size = h * stride[0] * bytesPerPixel(format);
113        list.add(*handle, rec);
114    }
115
116    return err;
117}
118
119status_t GraphicBufferAllocator::free(buffer_handle_t handle)
120{
121    status_t err;
122    if (sw_gralloc_handle_t::validate(handle) < 0) {
123        err = mAllocDev->free(mAllocDev, handle);
124    } else {
125        err = sw_gralloc_handle_t::free((sw_gralloc_handle_t*)handle);
126    }
127
128    LOGW_IF(err, "free(...) failed %d (%s)", err, strerror(-err));
129    if (err == NO_ERROR) {
130        Mutex::Autolock _l(sLock);
131        KeyedVector<buffer_handle_t, alloc_rec_t>& list(sAllocList);
132        list.removeItem(handle);
133    }
134
135    return err;
136}
137
138// ---------------------------------------------------------------------------
139}; // namespace android
140