GraphicBufferMapper.cpp revision cf56319d4deb2215e5274f321f7fee71caa1ada1 
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#define ATRACE_TAG ATRACE_TAG_GRAPHICS
19
20#include <stdint.h>
21#include <errno.h>
22
23#include <utils/Errors.h>
24#include <utils/Log.h>
25#include <utils/Trace.h>
26
27#include <ui/GraphicBufferMapper.h>
28#include <ui/Rect.h>
29
30#include <hardware/gralloc.h>
31
32
33namespace android {
34// ---------------------------------------------------------------------------
35
36ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferMapper )
37
38GraphicBufferMapper::GraphicBufferMapper()
39    : mAllocMod(0)
40{
41    hw_module_t const* module;
42    int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
43    ALOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
44    if (err == 0) {
45        mAllocMod = (gralloc_module_t const *)module;
46    }
47}
48
49status_t GraphicBufferMapper::registerBuffer(buffer_handle_t handle)
50{
51    ATRACE_CALL();
52    status_t err;
53
54    err = mAllocMod->registerBuffer(mAllocMod, handle);
55
56    ALOGW_IF(err, "registerBuffer(%p) failed %d (%s)",
57            handle, err, strerror(-err));
58    return err;
59}
60
61status_t GraphicBufferMapper::unregisterBuffer(buffer_handle_t handle)
62{
63    ATRACE_CALL();
64    status_t err;
65
66    err = mAllocMod->unregisterBuffer(mAllocMod, handle);
67
68    ALOGW_IF(err, "unregisterBuffer(%p) failed %d (%s)",
69            handle, err, strerror(-err));
70    return err;
71}
72
73status_t GraphicBufferMapper::lock(buffer_handle_t handle,
74        int usage, const Rect& bounds, void** vaddr)
75{
76    ATRACE_CALL();
77    status_t err;
78
79    err = mAllocMod->lock(mAllocMod, handle, usage,
80            bounds.left, bounds.top, bounds.width(), bounds.height(),
81            vaddr);
82
83    ALOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
84    return err;
85}
86
87status_t GraphicBufferMapper::unlock(buffer_handle_t handle)
88{
89    ATRACE_CALL();
90    status_t err;
91
92    err = mAllocMod->unlock(mAllocMod, handle);
93
94    ALOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
95    return err;
96}
97
98// ---------------------------------------------------------------------------
99}; // namespace android
100