GraphicBufferMapper.cpp revision 3330b203039dea366d4981db1408a460134b2d2c 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "GraphicBufferMapper"
18
19#include <stdint.h>
20#include <errno.h>
21
22#include <utils/Errors.h>
23#include <utils/Log.h>
24
25#include <ui/GraphicBufferMapper.h>
26#include <ui/Rect.h>
27
28#include <hardware/gralloc.h>
29
30
31namespace android {
32// ---------------------------------------------------------------------------
33
34ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferMapper )
35
36GraphicBufferMapper::GraphicBufferMapper()
37    : mAllocMod(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        mAllocMod = (gralloc_module_t const *)module;
44    }
45}
46
47status_t GraphicBufferMapper::registerBuffer(buffer_handle_t handle)
48{
49    status_t err = mAllocMod->registerBuffer(mAllocMod, handle);
50    LOGW_IF(err, "registerBuffer(%p) failed %d (%s)",
51            handle, err, strerror(-err));
52    return err;
53}
54
55status_t GraphicBufferMapper::unregisterBuffer(buffer_handle_t handle)
56{
57    status_t err = mAllocMod->unregisterBuffer(mAllocMod, handle);
58    LOGW_IF(err, "unregisterBuffer(%p) failed %d (%s)",
59            handle, err, strerror(-err));
60    return err;
61}
62
63status_t GraphicBufferMapper::lock(buffer_handle_t handle,
64        int usage, const Rect& bounds, void** vaddr)
65{
66    status_t err = mAllocMod->lock(mAllocMod, handle, usage,
67            bounds.left, bounds.top, bounds.width(), bounds.height(), vaddr);
68    LOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
69    return err;
70}
71
72status_t GraphicBufferMapper::unlock(buffer_handle_t handle)
73{
74    status_t err = mAllocMod->unlock(mAllocMod, handle);
75    LOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
76    return err;
77}
78
79// ---------------------------------------------------------------------------
80}; // namespace android
81