BufferItemConsumer.cpp revision 1df8c345854155cbbcb9f80de9d12d66ea70ac08 
1/*
2 * Copyright (C) 2012 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_NDEBUG 0
18#define LOG_TAG "BufferItemConsumer"
19#define ATRACE_TAG ATRACE_TAG_GRAPHICS
20#include <utils/Log.h>
21
22#include <gui/BufferItemConsumer.h>
23
24#define BI_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
25#define BI_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
26#define BI_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
27#define BI_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
28#define BI_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
29
30namespace android {
31
32BufferItemConsumer::BufferItemConsumer(uint32_t consumerUsage,
33        int bufferCount, bool synchronousMode) :
34    ConsumerBase(new BufferQueue(true) )
35{
36    mBufferQueue->setConsumerUsageBits(consumerUsage);
37    mBufferQueue->setSynchronousMode(synchronousMode);
38    mBufferQueue->setMaxAcquiredBufferCount(bufferCount);
39}
40
41BufferItemConsumer::~BufferItemConsumer() {
42}
43
44void BufferItemConsumer::setName(const String8& name) {
45    Mutex::Autolock _l(mMutex);
46    mName = name;
47    mBufferQueue->setConsumerName(name);
48}
49
50status_t BufferItemConsumer::acquireBuffer(BufferItem *item, bool waitForFence) {
51    status_t err;
52
53    if (!item) return BAD_VALUE;
54
55    Mutex::Autolock _l(mMutex);
56
57    err = acquireBufferLocked(item);
58    if (err != OK) {
59        if (err != NO_BUFFER_AVAILABLE) {
60            BI_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
61        }
62        return err;
63    }
64
65    if (waitForFence) {
66        err = item->mFence->waitForever(1000, "BufferItemConsumer::acquireBuffer");
67        if (err != OK) {
68            BI_LOGE("Failed to wait for fence of acquired buffer: %s (%d)",
69                    strerror(-err), err);
70            return err;
71        }
72    }
73
74    item->mGraphicBuffer = mSlots[item->mBuf].mGraphicBuffer;
75
76    return OK;
77}
78
79status_t BufferItemConsumer::releaseBuffer(const BufferItem &item,
80        const sp<Fence>& releaseFence) {
81    status_t err;
82
83    Mutex::Autolock _l(mMutex);
84
85    err = addReleaseFenceLocked(item.mBuf, releaseFence);
86
87    err = releaseBufferLocked(item.mBuf, EGL_NO_DISPLAY,
88            EGL_NO_SYNC_KHR);
89    if (err != OK) {
90        BI_LOGE("Failed to release buffer: %s (%d)",
91                strerror(-err), err);
92    }
93    return err;
94}
95
96} // namespace android
97