GraphicBufferMapper.cpp revision 4d0cd3f5241df28d8259c5ee7df33649c5c10f2d 
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// We would eliminate the non-conforming zero-length array, but we can't since
24// this is effectively included from the Linux kernel
25#pragma clang diagnostic push
26#pragma clang diagnostic ignored "-Wzero-length-array"
27#include <sync/sync.h>
28#pragma clang diagnostic pop
29
30#include <utils/Errors.h>
31#include <utils/Log.h>
32#include <utils/Trace.h>
33
34#include <ui/GraphicBufferMapper.h>
35#include <ui/Rect.h>
36
37#include <hardware/gralloc.h>
38
39
40namespace android {
41// ---------------------------------------------------------------------------
42
43ANDROID_SINGLETON_STATIC_INSTANCE( GraphicBufferMapper )
44
45GraphicBufferMapper::GraphicBufferMapper()
46    : mAllocMod(0)
47{
48    hw_module_t const* module;
49    int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module);
50    ALOGE_IF(err, "FATAL: can't find the %s module", GRALLOC_HARDWARE_MODULE_ID);
51    if (err == 0) {
52        mAllocMod = reinterpret_cast<gralloc_module_t const *>(module);
53    }
54}
55
56status_t GraphicBufferMapper::registerBuffer(buffer_handle_t handle)
57{
58    ATRACE_CALL();
59    status_t err;
60
61    err = mAllocMod->registerBuffer(mAllocMod, handle);
62
63    ALOGW_IF(err, "registerBuffer(%p) failed %d (%s)",
64            handle, err, strerror(-err));
65    return err;
66}
67
68status_t GraphicBufferMapper::unregisterBuffer(buffer_handle_t handle)
69{
70    ATRACE_CALL();
71    status_t err;
72
73    err = mAllocMod->unregisterBuffer(mAllocMod, handle);
74
75    ALOGW_IF(err, "unregisterBuffer(%p) failed %d (%s)",
76            handle, err, strerror(-err));
77    return err;
78}
79
80status_t GraphicBufferMapper::lock(buffer_handle_t handle,
81        uint32_t usage, const Rect& bounds, void** vaddr)
82{
83    ATRACE_CALL();
84    status_t err;
85
86    err = mAllocMod->lock(mAllocMod, handle, static_cast<int>(usage),
87            bounds.left, bounds.top, bounds.width(), bounds.height(),
88            vaddr);
89
90    ALOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
91    return err;
92}
93
94status_t GraphicBufferMapper::lockYCbCr(buffer_handle_t handle,
95        uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr)
96{
97    ATRACE_CALL();
98    status_t err;
99
100    if (mAllocMod->lock_ycbcr == NULL) {
101        return -EINVAL; // do not log failure
102    }
103
104    err = mAllocMod->lock_ycbcr(mAllocMod, handle, static_cast<int>(usage),
105            bounds.left, bounds.top, bounds.width(), bounds.height(),
106            ycbcr);
107
108    ALOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
109    return err;
110}
111
112status_t GraphicBufferMapper::unlock(buffer_handle_t handle)
113{
114    ATRACE_CALL();
115    status_t err;
116
117    err = mAllocMod->unlock(mAllocMod, handle);
118
119    ALOGW_IF(err, "unlock(...) failed %d (%s)", err, strerror(-err));
120    return err;
121}
122
123status_t GraphicBufferMapper::lockAsync(buffer_handle_t handle,
124        uint32_t usage, const Rect& bounds, void** vaddr, int fenceFd)
125{
126    ATRACE_CALL();
127    status_t err;
128
129    if (mAllocMod->common.module_api_version >= GRALLOC_MODULE_API_VERSION_0_3) {
130        err = mAllocMod->lockAsync(mAllocMod, handle, static_cast<int>(usage),
131                bounds.left, bounds.top, bounds.width(), bounds.height(),
132                vaddr, fenceFd);
133    } else {
134        if (fenceFd >= 0) {
135            sync_wait(fenceFd, -1);
136            close(fenceFd);
137        }
138        err = mAllocMod->lock(mAllocMod, handle, static_cast<int>(usage),
139                bounds.left, bounds.top, bounds.width(), bounds.height(),
140                vaddr);
141    }
142
143    ALOGW_IF(err, "lockAsync(...) failed %d (%s)", err, strerror(-err));
144    return err;
145}
146
147status_t GraphicBufferMapper::lockAsyncYCbCr(buffer_handle_t handle,
148        uint32_t usage, const Rect& bounds, android_ycbcr *ycbcr, int fenceFd)
149{
150    ATRACE_CALL();
151    status_t err;
152
153    if (mAllocMod->common.module_api_version >= GRALLOC_MODULE_API_VERSION_0_3
154            && mAllocMod->lockAsync_ycbcr != NULL) {
155        err = mAllocMod->lockAsync_ycbcr(mAllocMod, handle,
156                static_cast<int>(usage), bounds.left, bounds.top,
157                bounds.width(), bounds.height(), ycbcr, fenceFd);
158    } else if (mAllocMod->lock_ycbcr != NULL) {
159        if (fenceFd >= 0) {
160            sync_wait(fenceFd, -1);
161            close(fenceFd);
162        }
163        err = mAllocMod->lock_ycbcr(mAllocMod, handle, static_cast<int>(usage),
164                bounds.left, bounds.top, bounds.width(), bounds.height(),
165                ycbcr);
166    } else {
167        if (fenceFd >= 0) {
168            close(fenceFd);
169        }
170        return -EINVAL; // do not log failure
171    }
172
173    ALOGW_IF(err, "lock(...) failed %d (%s)", err, strerror(-err));
174    return err;
175}
176
177status_t GraphicBufferMapper::unlockAsync(buffer_handle_t handle, int *fenceFd)
178{
179    ATRACE_CALL();
180    status_t err;
181
182    if (mAllocMod->common.module_api_version >= GRALLOC_MODULE_API_VERSION_0_3) {
183        err = mAllocMod->unlockAsync(mAllocMod, handle, fenceFd);
184    } else {
185        *fenceFd = -1;
186        err = mAllocMod->unlock(mAllocMod, handle);
187    }
188
189    ALOGW_IF(err, "unlockAsync(...) failed %d (%s)", err, strerror(-err));
190    return err;
191}
192
193// ---------------------------------------------------------------------------
194}; // namespace android
195