GraphicBufferMapper.cpp revision 32397c1cd3327905173b36baa6fd1c579bc328ff 
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;
50
51    err = mAllocMod->registerBuffer(mAllocMod, handle);
52
53    ALOGW_IF(err, "registerBuffer(%p) failed %d (%s)",
54            handle, err, strerror(-err));
55    return err;
56}
57
58status_t GraphicBufferMapper::unregisterBuffer(buffer_handle_t handle)
59{
60    status_t err;
61
62    err = mAllocMod->unregisterBuffer(mAllocMod, handle);
63
64    ALOGW_IF(err, "unregisterBuffer(%p) failed %d (%s)",
65            handle, err, strerror(-err));
66    return err;
67}
68
69status_t GraphicBufferMapper::lock(buffer_handle_t handle,
70        int usage, const Rect& bounds, void** vaddr)
71{
72    status_t err;
73
74    err = mAllocMod->lock(mAllocMod, handle, usage,
75            bounds.left, bounds.top, bounds.width(), bounds.height(),
76            vaddr);
77
78    ALOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
79    return err;
80}
81
82status_t GraphicBufferMapper::unlock(buffer_handle_t handle)
83{
84    status_t err;
85
86    err = mAllocMod->unlock(mAllocMod, handle);
87
88    ALOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
89    return err;
90}
91
92// ---------------------------------------------------------------------------
93}; // namespace android
94